7?-

TECHNICAL ASSOCIATION OF THE

PULP AND PAPER INDUSTRY

COLLABORATIVE REFERENCE PROGRAM

FOR PAPER

REPORT NO. 52S

STRENGTH TESTS

U.S. DEPARTMENT OF COMMERCE

National Bureau of Standards

TECHNICAL ASSOCIATION OF THE

PULP AND PAPER INDUSTRY

COLLABORATIVE REFERENCE PROGRAM

FOR PAPER

Report No. 52S

STRENGTH TESTS

R. G. Powell

TAPPI-NBS Research Associate

Collaborative Testing Services, Inc.

E. B. Randall, Jr., J. Horlick

Laboratory Evaluation Technology Section

Standards Application and Analysis Division

Institute for Applied Technology

NBSIR 78-1342

U. S. DEPARTMENT OF COMMERCE

National Bureau of Standards
!

.
INTRODUCTION

Reports 52S and 52G comprise the fourth set of reports for the

77-78 program year. Participants in tests which involve strength

properties of paper will receive only the S report; those in

tests which measure other properties will receive only the G

report

.

Please note that some changes have been made in the computergenerated plots. These changes should aid participants in

familiarizing themselves with the International System of

Units (SI) as it applies to TAPPI test methods. Wherever

possible, Grand Means in SI units have been added at the top

of the plots, and scales in SI units have been added to the axes allowing the reader to compare means and variability

in common units and SI units for the same data. On all plots,

sample codes and unit of test have been shifted to new positions.

Notes and comments for individual laboratories and "Best Values"

applicable to a particular method are given following Table 1 for each method. See page 4 of this report for an explanation

of "Best Values." Please do not confuse these best values with

provisional values Included with the samples to detect serious

discrepancies at the time of test. NBS results, identified as L502 in the optical tests are included in some of the tables.

If there are any questions on the notes, the analyses, or the

reports in general, contact Edwin B. Randall, Robert G. Powell,

or Jeffrey Horlick on 301/921-2946.

Edwin B. Randall, Jr., Administrator

TAPPI Collaborative Reference Program

Laboratory Evaluation Technology Section

June 19, 1978
TAPPI-NBS COLLABORATIVE REFERENCE PROGRAM

BACKGROUND AND PURPOSE

In 1969, the National Bureau of Standards and the Technical Association of the Pulp and

Paper Industry established a collaborative reference program to provide a participating

laboratory with a means to check periodically the level and uniformity of its testing in

comparison with that of other laboratories.

The interchange of paper and board products and of the raw materials for these products

requires agreement among raw material suppliers, paper and board producers, converters,

distributors, retailers, commercial testing laboratories, user organizations and the

ultimate consumer as to the meaning of test results, an agreement that cannot be achieved

without accurate and precise testing. This program is designed to help assure agreement.

HOW THE PROGRAM WORKS

Participants Select the Tests in which they wish to participate. This choice is made on joining the program, but additional tests may be added at any time. Also new participants

may enter the program at any time.

Test Samples are Distributed Bimonthly; i.e. every 2 months.

Provisional Values are Provided with the Samples for one or both of the test levels, depending on method. The provisional values permit serious discrepancies to be detected without

delay. (It is left to the discretion of the laboratory supervisor as to whether these

values should be known to the operator.)

Each Participant Tests the Samples , following instructions provided for each test method.

The full check on a single instrument should normally take no more than 30 minutes. The

test results are then sent to NBS for analysis. The participant is also asked to report

other information relevant to an accurate analysis, such as test conditions and the instruments used.

Industry Means, Best Values and Other Statistics are developed from the data by NBS. The

best values are estimates based on a careful examination of all data, both current and past,

with special attention to results obtained by the National Bureau of Standards and other

recognized reference laboratories in this and other countries.

A Quick Report is Prepared for each participating laboratory reporting data on time. This

report shows the industry mean values, and the deviations of the laboratory's results from

these values for each test method.

A Longer Summary Report, Showing the Data from all Participants, is also prepared. In the summary report, of which this report is an example, each laboratory is identified by

a code number so that the information is maintained on a confidential basis. However,

instruments are identified by type so participants can compare their results with

those obtained on similar instruments of different manufacture. This report includes

test averages, best values and standard deviations for individual participants and for

the group as a whole. A participant should be able to readily determine the level and

variability of his results in comparison with those of the other laboratories.

Repeatability and Reproducibility Statements such as Contained in ASTM, TAPPI and ISO

Standards are included at the end of the report. Participants can check their performance level against the precision statement given in the test method or specification.
PAGE

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TABLE OF CONTENTS

Analyses In This Report

Introduction

Description of Program

Metric Conversion Table

Key to tables and graphs

10-1 Bursting Strength - Up to 45 psi

10-

2 Bursting Strength - Up to 45 psi. Air Clamps

11-

1 Bursting Strength - Up to 100 psi

15-1 Tearing Strength - Deep Cutout

17-1 Tearing Strength - No Cutout

19-

1 Tensile Breaking Strength - Packaging Papers

20-

1 Tensile Breaking Strength - Printing Papers, CRE

20-2 Tensile Breaking Strength - Printing Papers, pendulum

25-

1 Tensile Energy Absorption - Packaging Papers

26-

1 Tensile Energy Absorption - Printing Papers

28-

1 Elongation to Break - Packaging Papers

29-

1 Elongation to Break - Printing Papers

30-

1 Folding endurance, MIT type

30-2 Folding endurance, MIT type, log (base 10)

35-

1 Stiffness, Gurley

36-

1 Stiffness, Taber

49-

1 Surface Pick Strength, IGT

50-

1 Surface Pick Strength, Wax

91-1 Concora (Flat Crush)

96-1 Ring Crush

Summary

Diagram of Elmendorf tear testers, deep cutout vs. no cutout

Analyses In The G Report

40-1 Air Resistance, Gurley Oil type

40-

2 Air Resistance, Sheffield type

41-

1 Air Resistance, Gurley Mercury type

44-

1 Smoothness, Parker Printsurf

45-

1 Smoothness, Sheffield type

45-2 Smoothness, Bekk type

47-1 Smoothness, Bendtsen type

56-

1 K & N Ink Absorption

57-

1 pH, Cold Extraction

57-2 pH, Hot Extraction

60-1 Opacity, White (89%) Backing

60-2 Opacity, Paper Backing, B & L type

60-3 Opacity, Paper Backing, Elrepho type

65-1 Blue Reflectance (Brightness), Directional

65-2 Blue Reflectance, Diffuse, Elrepho (Gloss Trap)

65-3 Blue Reflectance, Diffuse, Elrepho (No Gloss Trap)

75-1 Specular Gloss, 75°

90-1 Thickness (Caliper)

95-1 Grammage (Basis Weight)

iii
TABLE OF CONVERSION FACTORS TO METRIC (SI) UNITS

Physical To Convert

Quantity From To

Bursting strength psi kPa

kg/ cm

2 kPa

bar kPa

Tearing strength g mN

Tensile strength lb/ in. kN/m

lb/0.5 in. kN/m

lb/15 mm kN/m

kg/ 15 mm kN/m

kg/25 mm kN/m

kg/mm kN/m

Tensile energy absorption ft-lb/ft

2 J/m

2

in. -lb/in. 2 J/m2

kg-m/m2 J/m2

Bending stiffness g* cm yN*m

Flat-crush strength (Concora) lb N

Ring-crush (TAPPI) lb N

(ISO) lb/6.00 in. kN/m

Thickness mil ym

iv

Multiply

by

6.895

98.07

100.00

9.807

.1751

.3502

.2965

.6538

.3923

9.807

14.59

175.1

9.807

98.07

4.448

4.448

0.0292

25.40
KEY TO TABLES AND GRAPHS

MEAN -

GRAND MEAN - (GR. MEAN)

SD OF MEANS - (SD MEANS)

DEV -

N. DEV -

SDR -

AVERAGE SDR -

R. SDR -

The average of individual TEST DETERMINATIONS.

The number of TEST DETERMINATIONS in the

mean is given in the upper right corner of

the first table (TEST D.) and again at the

bottom of this table.

The average of the individual laboratory

MEANS, excluding laboratories flagged

(see column F) with an X, # , or +. The

GRAND MEAN is given in US customary units

and, where applicable, in SI metric units.

The standard deviation of the laboratory

MEANS about the GRAND MEAN ; an index of the

among-laboratory precision.

The deviation or difference of the laboratory

MEAN from the GRAND MEAN.

The normal deviate or ratio of the DEV to

the SD OF MEANS; an indication of the degree

of divergence of the laboratory MEAN from

the GRAND MEAN. AN. DEV of more than 2 or less than -2 may indicate that the

participant is not following the procedure

considered standard for this analysis

The standard deviation of repeated measurements

that is, of individual test determinations

about their MEAN.

The average of the individual laboratory

SDR's; an index of the within- laboratory

precision of repeated measurements

The relative standard deviation of repeated

measurements; that is , the ratio of the SDR

to the AVERAGE SDR: an indication of the

ability of a participant to repeat his measurements relative to the average ability. The

greater the number of TEST DETERMINATIONS the

closer the R. SDR should be to unity. If R. SDR

is outside the limits given below, the participant may not be following the procedure considered

standard for this analysis:

1
No. of test

Determinations

Lower limit

for R. SDR

Upper limit

for R. SDR

3 0.09 2.58

5 0.27 2.06

8 O.hO 1.77

10 0.U6 1.67

15 0.56 1.53

20 0.6l iM

25 0.65 1.39

VAR - Code for instrument type or variation in

condition, see second table.

F - Flag, with following meaning: + - Excluded from grand means because VAR

non-standard for this analysis

# - Excluded because data were not understood or because of a non-coded variation reported by

the laboratory. (See NOTES following Table 1

for each method.)

M - Excluded because data for one sample are missing

X - Excluded because plotted point would fall

outside of the 99% error ellipse, (see

below for explanation of Graph ) * - Included in grand means but plotted point

falls outside of the 99% error ellipse.

The participant should take this as a warning

to reexamine his testing procedure

S - Included in grand mean but only after

omission of one of more ’wild' values;

that is, test determinations more than 3

times AVERAGE SDR from the laboratory's

MEAN. Not more than 20$ of the test determination

may be excluded in this manner without

rejecting the laboratory.

0 - Included in grand mean and inside 95$ error ellipse

COORDINATES - Distances along major and minor axes of error ellipse. If special additive or concurrent model of the measuring process

applies to this method, the distance along

the minor axis represents the random error within a laboratory while that along the

major axis also includes a systematic

laboratory component of error

2
95% ELLIPSE -

AVG R. SDR -

Graph -

Lengths of the major and minor axes of

the ellipse and the angle that the major

axis makes with the horizontal axis.

Average of the R. SDR for the two samples;

an indication of the laboratory's precision

of repeated measurements.

For each laboratory the MEAN for the second

sample is plotted against the MEAN for the first

sample, with each point representing a laboratory.

The horizontal and vertical lines are the GRAND

MEANS. The dashed line is drawn at 45°.

The solid sloping line, which may or may not

lie close to the 45° line, is along the major

axis of the error ellipse. The ellipse is drawn

so that , on the average, it will include 95% ctf the points representing the laboratories.

Plotted symbols are as explained above

(under F), except that an 'S' is plotted as an 'O'. A participant whose plotted point

falls outside of the ellipse should carefully

reexamine the testing procedure he is

following.

The graph is plotted with an ellipse when there

are 20 or more laboratories in the analysis.

When there are 10 through 19 laboratories in

the analysis the graph is plotted but the ellipse

is omitted. When there are fewer than 10 laboratories retained in the analysis the graph is not

plotted.

The International System of Units (SI) is used on

the plots wherever possible to aid participants

in familiarizing themselves with SI. Grand means

in SI units are given at the top of the plot, and

supplementary scales in SI units are drawn along

the axes allowing the reader to compare means and

variability in common units and SI units for the same data.

3
Summary - (At end of

report)

REPL CRP -

REPL TAPP I -

REPEAT -

REPROD -

Best values -

In addition to several quantities already defined

above the summary shows the following values for

each test method:

The number of replicate test determinations used

in this Collaborative Reference Program.

The number of replicate test determinations in a test result required by the applicable TAPPI

Standard or assumed here if there is no TAPPI

Standard. This quantity is needed in the computation

of TAPPI repeatability and reproducibility from the

SD OF MEANS and the AVER SDR. See TAPPI Standard

T1206 for definitions and computations.

TAPPI repeatability, a measure of the withinlaboratory precision of a test result.

TAPPI reproducibility, a measure of the betweenlaboratory precision of a test result.

Given at the end of Table 1 for each method for

which sufficient information is available. These

best values are estimates based on a careful

examination of all data, both current and past,

with special attention to results obtained by the

National Bureau of Standards and other recognized

reference laboratories in this and other countries.

All participants using equipment that is standard

for the analysis should be able to achieve results

within the plus-minus ( + ) limits, when these are shown along with the best values

4
REPORT NO TAPPI COLLABORATIVE REFERENCE PROGRAM MARCH 1978 ANALYSIS TlO-1 TABLE 1 BURSTING STRENGTH, PSI TAPPI STANDARD T403 OS-76, BURSTING STRENGTH OP PAPER - PERKINS MODEL C SAMPLE PRINTING SAMPLE PRINTING TEST D. - 15

LA B H39 84 GRAMS PER SQUARE METER H60 74 GRAMS PER SQUARE METER

C0DS MEAN DEV N . DB

V

SDR R. SDR MEAN DBV N. DBV SDR R. SDR VAR F LAB

LI 07 38.87 2. 64 1.34 2.61 1 . 22 20.20 2.01 1.26 2.14 1.82 l OC 0 LI 07

LI 21 35.72 -.51 -.26 1.80 . 84 17.34 -. 85 -.53 1.16 .99 1 OC 9 LI 21

LI 3 1 32.60 = 3. 63 -1.85 3.09 1.44 16.20 -1 . 99 -1.24 1.08 .92 1 OC 0 LI 3

1

LI 3 4 38.33 2.10 1.07 1.25 . 58 17.47 -.72 -.45 .55 .47 1 OC 9 LI 34

LI 50 37.57 1.34 .68 2.37 1.11 18. 53 .35 .22 1.22 1.03 l OC 0 LI 50

LI 53 37.30 1.07 .54 1.79 . 83 19.60 1 .41 .88 1.12 .95 1 OC 0 LI 53

LI 58 33. 60 -2.63 -1.34 1.45 . 68 18.57 .38 .24 1.07 .91 1 OC 9 LI 58

LI 62 31.33 -4.90 -2.49 4.65 2.17 13.63 -4. 59 -2.86 1.30 1.10 IOC * LI 62

LI 67 36.02 -.21 -.11 1.02 . 47 17.59 -. 60 -.37 1.03 .88 1 OC 0 LI 67

LI 83 34.37 -1.86 -.95 1.63 . 76 15.97 -2. 22 -1.38 .95 .81 1 OC 0 LI 83

LI 91 34.40 -1 . 83 -.93 2.29 1 . 07 17.50 -.69 -.43 1.63 1.38 1 OC 0 LI 91 L2 0 3 A. 36.57 .34 .17 3.20 1.49 17.83 -.35 -.22 1.83 1 .55 1 OC 0 L203A

L203B 34.67 -1.56 -. 80 2.76 1.29 16.00 -2.1 9 -1.36 .73 .62 1 OC 0 L203B

L2 0 7 37.87 1.64 .64 2. 67 1.24 20.80 2.61 1.63 1.91 1.52 I OC 0 L207

L223A 40.20 3.97 2.02 1.45 . 68 16.65 -1.53 — i 96 .82 .70 1 OC X L223A

L2 2 5 37.07 . 84 .43 2.55 1.19 19.13 .95 .59 .99 .84 IOC 0 L? 25 L232 38.27 2.04 1 .04 5. 84 2.72 14.17 -4.02 -2.51 1.14 .97 1 OC X L232 L237A 36.70 .47 .24 1.21 .56 17.03 -1.15 -.72 .72 .61 1 OC 9 L237A

L237B 36.27 .04 .02 1.07 .50 17.63 -.55 -.35 .44 .38 1 OC 0 L237B

L243 34.73 -1.50 -.76 3.22 1. 50 18. 87 .53 .42 . 88 .74 l OC 0 L243

L2 49 34.98 -1.25 -.64 . 80 . 37 15.78 -2.41 -1.50 .82 .69 1 OC 0 L249

L26I 35.17 -1.06 -.54 1.88 . 87 17.22 -.97 -.60 .95 .80 IOC 0 L261 L264 35.40 -.83 -.42 1.55 .72 18.80 .61 .38 .77 .66 IOC 0 L26*

L2 6 8 35.67 -.56 -.29 1.03 .48 18.23 .05 .03 .73 .62 1 OC 9 L268

L279 34.37 -1.86 -.95 2.92 1 . 36 17.00 -1.19 -.74 1.16 .99 IOC 0 L279

L299 40.77 4.54 2.31 2.36 1.10 20.47 2.28 1.42 1.63 1.39 1 OC 0 L299

L311 38.20 1.97 1.00 3.41 1.59 18.73 .55 . 34 1.49 1.25 1 OC 0 L311

L3I 2 37.80 1 . 57 .80 1.94 . 91 19.57 1 . 38 . 36 . 80 .68 l OC 0 L31 2 L3 1 5 40.37 4.14 2.10 2.29 1.07 21.03 2.85 1.78 .69 .59 l OC 0 L315

L321 35.60 -.63 -.32 2.32 1.08 20.27 2.08 1.30 1.28 1.09 1 OC 0 L321

L3 2 2 39.73 3.50 1.78 2. 02 . 94 19.13 .95 .59 .62 .53 1 OC 0 L322 L326 36.20 -.03 -.02 1.42 . 66 18.53 .35 .22 1.36 1.15 1 OC 0 L326

L3 3 0 37 • 79 1.56 .79 2.05 .95 19.10 .91 .57 1.09 .92 IOC 5 L330

L3 31 37.33 1.10 .56 2.09 . 98 19.20 1 .01 .63 1.61 1.37 I OC 0 L331

L3 3 3 34.80 -1.43 -.73 3.61 1.68 16.20 -1 . 99 -1.24 2.18 1 . 85 1 OC 9 L333

L3 3 9 33.09 -3.14 -1 .60 3.22 1 . 50 16.25 -1 .93 -1 .21 1.12 .95 1 OC 0 L339

L3 4 4 34.93 -1.30 -.66 1.35 . 63 15.77 -2.4 2 -1.51 2.29 1 .95 1 OC 0 L344

L3 5 5 34.81 -1 . 42 -.72 1.40 . 65 19.51 1 .33 . 83 1 .28 1.09 1 OC 0 L356

L358 36.73 .50 .25 1.71 . 80 17.00 -1.19 -.74 .58 .58 IOC 0 L358

L350 35. 81 -.42 -.22 .90 . 42 18.98 . 79 .49 .78 .67 1 OC 0 L360

L390 37.13 .90 .46 3.59 1 . 67 18.31 .13 .08 1.61 1.37 1 OC 0 L390

L561 36.60 .37 .19 3.73 1.74 20.10 1.91 1.19 1 .38 1.17 IOC 0 L561 L568 36. 07 -.16 -.08 2.72 1.27 18.37 .18 .11 1.32 1.12 l OC 0 L568 L599 36. 38 .15 .08 1.79 . 83 19.57 1 . 38 .86 1.11 .94 IOC 0 L599

L501 38.20 1.97 1.00 2.06 .96 19.06 .87 .54 1.23 1.05 1 OC 0 L601

GR. MEAN - 36.23 PSI GRAND MEAN - 18.19 PSI TEST DETERMINATIONS 15

SD MEANS - 1.97 PSI SD OF MEANS - 1 .60 PSI 43 LABS IN GRAND MEANS

AVERAGB SDR - 2.15 PSI AVBRAGE SDR • a> PSI

GR. MEAN - 249.8 KIL0PASCAL GRAND MEAN - 125.4 KIL0PASCAL

Ll 28 36. 93 .70 .36 1.22 . 57 18.87 .68 .42 .92 .78 1 OB Ll 28

L2 4 2 37.74 1.51 .77 2.87 1.34 19.94 1.76 1.09 .92 .78 1 0 T L242 L250L 31.85 -4.38 -2.23 1.33 . 62 18.17 -.01 -.01 .97 .82 ION L250L

L251 32.96 -3.27 -1.66 1.47 .69 17.06 -1.13 -.70 1.28 1.09 10V L251 L269 38.70 2.47 1.26 2.57 1.20 22.10 3.91 2.44 1.18 1.01 1 OA L269

L484 34.43 • CO o -.91 2.62 1.22 21.03 2.85 1.78 1.39 1.18 1 OM L464 TOTAL NUMBER OF LABORATORIES REPORTING • 51

Best Values: H39 36.0 + 3.1 psi H60 18.3 + 2.2 psi

5
REPORT NO. 52

TAPPI COLLABORATIVE RBFBRENCB PROSRAM ANALYSIS TIO-1 TABLE 2 BURSTING STRENGTH, PSI iANDARD T403 OS-76, BURSTING STRENGTH OP PAPER -

MARCH 1976

PERKINS MODEL C LAB MEANS COORDINATES AVO C0DB F H39 H60 MAJOR MINOR R. SDR VAR PROPERTY- • -TEST INSTRUMENT--- CONDITIONS

LI 62 « 31.33 13. 60 -6.67 -.72 1.64 IOC BURSTING STRBNGTH UP TO 45 PSI, PERKINS C. MANUAL CLM1P

L250L 31.85 18.17 -3.51 2.62 .72 ION BURSTING STRENGTH UP T0 45 PSI , LH0MARGT, MAN. CLAMP, 20C, 65

Li 31 0 32.60 16.20 -4.10 .60 1.18 IOC BURSTING STRENGTH UP T0 45 PSI, PBRKINS c. MANUAL CL&UP

L2 51 32.96 17.06 -3.29 1 . 07 .89 10V BURSTING STRENGTH UP T0 45 PSI, L* W, MANUAL CLAMP, 20C, 65*

L3 3 9 0 33.09 16.25 -3.67 . 34 1.23 IOC BURSTING STRENGTH UP T0 45 PSI . PBRKINS C, MANUAL CLAMP

Li 5 8 0 33.60 18.57 -1.87 1 . 89 .79 IOC BURSTING STRENGTH UP T0 45 PSI , PBRKINS C. MANUAL CLAMP

L279 0 34.37 17.00 -2.20 .17 1.18 IOC BURSTING STRENGTH UP T0 45 PSI, PBRKINS c. MANUAL CLAMP

Li 83 0 34.37 15.97 -2.82 -.65 .79 IOC BURSTING STRENGTH UP T0 45 PSI , PBRKINS C. MANUAL CLAMP

Li 91 0 34. 40 17.50 -1 . 88 .55 1 .22 IOC BURSTING STRENGTH UP TO 45 PSI, PERKINS C. MANUAL CLAMP

L484 34.43 21.03 .28 3.35 1.20 10M BURSTING STRENGTH UP T0 45 PSI, REGMED MT/MOT. MANUAL CLAMP

L20 3B 0 34.67 16.00 -2. 57 -.61 .95 IOC BURSTING STRENGTH UP TO 45 PSI. PBRKINS C. MANUAL CLAMP

L2 4 3 0 34.73 18.87 -.79 1.44 1.12 IOC BURSTING STRBNGTH UP TO 45 PSI, PERKINS C. MANUAL CLAMP

L333 0 34.80 16.20 -2.34 -.73 1.77 IOC BURSTING STRENGTH UP T 6 45 PSI , PBRKINS C. MANUAL CLAMP

L356 0 34.81 19.51 -.33 1.91 .87 IOC BURSTING STRENGTH UP T6 45 PSI. PERKINS C, MANUAL CLAMP

L344 0 34.93 15.77 -2.49 -1.15 1.29 1 oc BURSTING STRENGTH UP T 6 45 PSI, PBRKINS C. MANUAL CLAMP

L249 0 34.98 15.78 -2.45 -1.17 .53 IOC BURSTING STRENGTH UP T0 45 PSI . PBRKINS C. MANUAL CLAMP

L251 0 35.17 17.22 -1.43 -.13 .84 IOC BURSTING STRENGTH UP T0 45 PSI. PERKINS C. MANUAL CLAMP

L264 0 35.40 18.80 -.29 .99 .69 IOC BURSTING STRBNGTH UP T0 45 PSI, PBRKINS C. MANUAL CLAMP

L321 0 35.60 20.27 .75 2.04 1.09 IOC BURSTING STRBNGTH UP T0 45 PSI. PERKINS C, MANUAL CLAMP

L2 6 8 0 35.67 18.23 -. 42 .38 .55 1 oc BURSTING STRENGTH UP T0 45 PSI, PBRKINS C. MANUAL CLAMP

Li 2i 0 35.72 17.34 -.92 -.37 .91 i oc BURSTING STRENGTH UP T0 45 PSI. PERKINS c. MANUAL CLAMP

L350 0 35.81 18.98 .14 .89 . 54 1 oc BURSTING STRBNGTH UP re 45 PSI. PBRKINS C. MANUAL CLAMP

Li 6 7 0 36.02 17.59 -.53 -.35 .68 IOC BURSTING STRENGTH UP ra 45 PSI. PBRKINS c. MANUAL CLAMP

L5 6 6 0 36.07 18.37 -.02 .24 1.19 1 oc BURSTING STRENGTH UP re 45 PSI. PBRKINS c. MANUAL CLAMP

L3 2 6 0 36.20 18.53 .18 .29 .91 IOC BURSTING STRENGTH UP Te 45 PSI. PBRKINS c. MANUAL CLAMP

L237B 0 36.27 17.63 -.30 -.46 .44 IOC BURSTING STRENGTH UP T0 45 PSI . PERKINS C. MANUAL CLAMP

L599 0 36.38 19.57 .95 1.01 .89 IOC BURSTING STRENGTH UP to 45 PSI. PERKINS c. MANUAL CLAMP

L2 0 3 A 0 36.57 17.83 .06 -.48 1.52 ioc BURSTING STRBNGTH UP re 45 PSI, PBRKINS c. MANUAL CLAMP

L56i 0 36.60 20.10 1.45 1.31 1.46 IOC BURSTING STRBNGTH UP T0 45 PSI, PBRKINS c. MANUAL CLAMP

L237A 0 36.70 17.03 -.32 -1.20 .59 IOC BURSTING STRENGTH UP TO 45 PSI. PERKINS C, MANUAL CLAMP

L358 0 36.73 17.00 -.32 -1.25 .69 IOC BURSTING STRENGTH UP re 45 PSI. PBRKINS C. MANUAL CLAMP

Li 2 8 36.93 18.87 .97 .12 .67 1 OB BURSTING STRENGTH UP re 45 PSI, PBRKINS B. MANUAL CLAMP

L2 2 5 0 37.07 19.13 1.24 .25 1.01 IOC BURSTING STRENGTH UP to 45 PSI. PBRKINS C. MANUAL CLAMP

L390 0 37.13 18.31 . 80 -.44 1.52 1 oc BURSTING STRBNGTH UP TO 45 PSI. PBRKINS C. MANUAL CLAMP

Li 53 0 37.30 19.60 1.70 . 48 .89 IOC BURSTING STRENGTH UP T6 45 PSI. PBRKINS C. MANUAL CLAMP

L331 0 37.33 19.20 1.49 .15 1.17 IOC BURSTING STRENGTH UP re 45 PSI. PBRKINS C. MANUAL CLAMP

LI 50 0 37.57 18.53 1 . 28 -.53 1.07 IOC BURSTING STRENGTH UP TO 45 PSI . PBRKINS c. MANUAL CLAMP

L242 37.74 19.94 2.26 .49 1.06 1 OT BURSTING STRENGTH UP re 45 PSI , L*W, MANUAL CLAMP

L3 3 0 0 37.79 19.10 1 . 80 -.21 .94 1 cc BURSTING STRENGTH UP re 45 PSI . PERKINS C, MANUAL CLAMP

L31 2 0 37.80 19.57 2.08 .16 . 79 1 oc BURSTING STRENGTH UP TO 45 PSI, PBRKINS C, MANUAL CLAMP

L2 0 7 0 37.87 20.80 2.88 1.10 1.43 10C BURSTING STRENGTH UP re 45 PSI. PBRKINS C. MANUAL CLAMP

L601 r 38.20 19.06 2.10 -.49 1.00 1 oc BURSTING STRENGTH UP T6 45 PSI . PBRKINS C. MANUAL CLAMP

L31 i 0 3 8.20 18.73 1.90 -.75 1 .42 1 oc BURSTING STRENGTH UP TO 45 PSI. PERKINS C. MANUAL CLAMP

L2 3 2 X 38.27 14. 1 7 -.79 -4.44 1.85 10C BURSTING STRENGTH UP T0 45 PSI, PBRKINS C. MANUAL CLAMP

Li 3 4 0 17.47 1.25 -1.84 .52 1 oc BURSTING STRENGTH UP Te 45 PSI. PERKINS C. MANUAL CLAMP

L269 22.10 4. 33 1.64 1.10 1 0 A BURSTING STRENGTH UP T0 45 PSI. PBRKINS A. MANUAL CLAMP

Li 07 0 38.8 7 20. -0 3.32 .02 1.52 1 oc BURSTING STRENGTH UP te 45 PSI . PBRKINS c. MANUAL CLAMP

L3 2 2 0 J9.73 19.1 3 3.37 -1 .35 .73 IOC BURSTING STRENGTH UP Te 45 PSI. PERKINS C. MANUAL CLAMP

L223A X 40.20 16.65 2.25 -3. 61 . 69 IOC BURSTING STRENGTH UP T0 45 PSI. PBRKINS C. MANUAL CLAMP

L31 5 0 40.37 21.03 5.02 -.22 .83 IOC BURSTING STRBNGTH UP TO 45 PSI, PBRKINS c. MANUAL CLAMP

L299 0 40.77 20.47 4. 99 -.91 1.24 IOC BURSTING STRBNGTH UP TO 45 PSI . PBRKINS C. MANUAL CLAMP

GME ANS

36.23 18.19 1 .00 95* ELLIPSE: 6. 06 2.40 WITH GAMMA - 36 DBGREES

6
KIL0PRSCRL

100

1

10

120

130

140

150

160

170

BURSTING STRENGTH MODEL C

SAMPLE H39 r 36.2 PSI SAMPLE H60 = 18.2 PSI

SAMPLE H39 = 250 K I L0PASCAL SAMPLE H60 = 125 K I L0PASCAL

i

1 1 1 1 1 1 1 1 1

1 200 210 220 230 240 250 260 270 280 290 300

KIL0PRSCRL

7
REPORT NO. 52 S TAPPI COLL A BORATI VE BEFERBNCE PROGRAM MARCH 1978 ANALYSIS T10-2 TABLE 1 BOBSTING STRENGTH, PSI TAPPI STANDARD T403 OS-76, BURSTING STRENGTH 0P PAPER - PERKINS MODEL C-A OR C WITH AIR OR HYDRAULIC CLAMPS

SAMPLE PRINTING SAMPLE PRINTING TEST D. 1 15 LAB H39 84 GRAMS PBR SQUARE MBTBS H60 74 GRAMS PBR SQUARE MBTER

C0DS MEAN DEV N.DEV SDR R. SDR MBAN DEV N. DBV SDR R. SDR VAR P LAB

LI 0 0 36.9 1.0 .57 1.1 .61 19.9 1.2 .91 . 8 .60 10D 0 LI 00

LI 0 5 35.4 -.A -.27 4.9 2.68 19.0 . 4 .29 2.4 1 .85 10D 9 LI 0 5 LI i 5 38.1 2.2 1 .29 1.1 .59 20.5 1 . 9 1.43 1.2 .93 10D 9 LI 15

LI 18 34.6 -1.3 -.76 2.7 1.46 19.8 1.1 . 87 1 .1 . 84 1 0 D 0 LI 18

LI 22 36.8 .9 .54 1.7 . 93 19.2 . 5 .41 1.7 1.23 1 OF O LI 22

Li 2 5 31.9 -4.0 -2.38 4.4 2. 39 15.4 -3.3 -2.49 3. 8 2.97 10D • LI 25

Li 48 36.5 .6 .34 1.7 .92 19.5 . 8 .61 1.1 .87 1 OD 0 LI 4 8

Li 57 37.2 1.3 .77 2.3 1.28 21.3 2. 6 1 . 99 .9 .68 1 0 D 9 LI 57

Li 59 31.8 -4.1 -2.44 1.0 . 56 16.1 -2.6 -1.98 1.3 1.04 1 OD 0 LI 59

Li 63 35.6 -.3 -.19 2.0 1.11 18.4 -.3 -.23 1.4 1.06 1 OD 9 LI 63

Li 66 38.1 2.2 1.31 1.5 .80 18.7 . 1 .05 1.5 1.17 1 0 D 0 LI 66

Li 8 5 37.5 1.6 .97 1.0 .54 20.4 1.7 1.33 1.2 .92 1 OD 0 Li 85

Li 90C 36.8 .9 .54 1.7 .95 18.8 .1 .10 1 .

1.02 1 0 D 0 LI 90C

L190R 32.9 -3.0 -1.79 2.1 1.16 16.6 -2.1 -1.60 1.4 1.06 1 OD 0 L190R

Li 9 4 36.4 .5 .30 1.5 .81 19.3 .6 .48 . a .63 1 OD 0 LI 94

L2C2 35.0 -.9 -.55 1.7 .93 19.2 . 5 .38 .7 .54 1 0 D 0 L202

L2i 7 35.8 -.1 -.05 1.8 .97 18.3 •i4 -.30 1.2 .90 1 0 F 0 L21

L2 2 4 38.1 2.2 1.29 2.0 1.07 18.8 . 1 .08 1 . 5 1.16 1 OD 0 L224 L226B 35.0 -.9 -.51 1.3 .70 16.8 -1.9 -1.42 . 9 .71 1 OD 0 L226B

L226C 34.8 -1 .0 -.62 3.4 1 . 84 19.6 1.0 .74 1.1 .85 1 OD 0 L2 2 6C L233 33.1 -2.8 -1.65 1.2 . 68 17.9 -. 8 -.58 1.7 1.32 1 OD 0 L233

L241 36.3 .4 . 26 3.0 1.62 20.5 1.9 1.43 1 . 5 1 .15 1 OD 0 L241

L2 5 5 34.7 -1 .2 -.72 1.2 . 67 17.6 -1.1 -.81 .9 .71 1 OD 0 L255 L257A 35.9 -.0 -.02 1.7 . 94 18.5 -. 1 -.10 1.2 .92 1 0 D 9 L257A

L257B 36.9 1 .0 .62 2.3 1.25 18.7 . 0 .00 1.5 1 .20 1 OD 9 L257B

L257C 36.9 1.0 .62 2.0 1.10 19.1 . 4 .31 1.2 .90 1 OD 0 L257C

L262 36.7 . 8 .48 . 8 .46 19.3 .6 . 49 1.0 .74 1 OD 9 L262

L2 7 5 38.6 2.7 1.60 1.9 1 . 01 1 8.1 -.5 -.41 2.0 1 .55 1 0 D 0 L275

L280 36.8 .9 .54 1.7 .95 19.7 1.0 . 77 1 . 3 1.03 1 OD 0 L260

L3 0 9 36.8 .9 .51 1.1 .61 16.9 -1.7 -1.33 1.3 .97 1 OD 0 L309

L341 35.8 -.1 -.05 .7 .37 17.9 -.7 -.56 .5 .35 1 OD 0 L341 L352 34.9 -1.0 -.59 1.7 . 92 17.3 -1.4 -1 . 06 1.7 1.32 1 OD 9 L352 L378 36.2 .3 .18 1.9 1 . 01 19.5 . 8 .61 1.3 1 .01 1 OD 9 L378

L5 6 7 33.1 -2.8 -1.67 1.1 .60 16.9 -1 . 8 -1 .36 1.1 . 85 10D 0 L567

L575 36.1 .2 .12 2.6 1.44 19.7 1 . 0 .78 1 . 4 1.10 1 OD 0 L575

L581 36.6 .7 .40 2.3 1.24 18.7 .0 .00 2.7 2.08 1 OD 0 L581

L5 87 37.7 1.8 1.05 2.2 1.21 18.9 .2 .18 .9 .67 1 OD 0 L5 87

GR. MEAN - 35.9 PSI GRAND MEAN - 18.7 PSI TEST DETERMINATIONS - 15 SD MEANS - 1.7 PSI SD OF MEANS - 1.3 PSI 37 LABS IN GRAND MEANS

AVERAGE SDR • 1 .

PSI AVBRAGE SDR •

1 .

PSI

GR. MEAN • 247.5 KIL0PASCAL GRAND MEAN * 128.7 K I LOP ASCAL TOTAL NUMBER OF LABORATORIES REPORTING - 37

Best Values: H39 36.1 + 2..5 psi H60 18.9 + 1.7 psl

8
REPORT No. S2S TAPPI COLLABORATIVE REFERENCE PROORAM MARCH 1973 ANALYSIS T10-2 TABLE 2 BURSTING STRENGTH. PSI TAPPI STANDARD T403 03-76. BURSTING STRENGTH 0F PAPER - PERKINS M0DBL C-A 0R C WITH AIR 0R HYDRAULIC CLAMPS

LAB MEANS COORDINATES

CdDE F H39 H60 MAJOR MINOR

LI 59 0 31.8 16.1 -4.9 .2

LI 2 5 » 31 .9 1 S. 4 -5.2 -.4

LI 90

R

0 32.9 16.6 -3.7 -.0

L567 0 33.1 16.9 -3.3 .1

L2 3 3 0 33.1 17.9 -2.7 .9

LI I 8 0 34. 6 19.6 -.4 1.7 L255 0 34.7 1 7.6 -1.6 - • 2 L226C 0 34. 8 19.6 -.3 1 .4 L352 0 34.9 17. 3 -1.6 -.6

L202 0 35.0 19.2 -.5 .9 L226B 0 35.0 16.6 -1 . 8 -1.0

LI 0 5 0 35.4 19.0 -.2 .6

LI 63 0 35.6 18.4 -.4 -.1

L341 0 35. 8 17.9 -.5 -.6

L2I 7 0 35.8 18.3 -. 3 -.3

L257A 0 35.9 18.5 -.1 -.1 L575 0 36.1 19.7 .7 .7 L378 0 36.2 19.5 .7 .5 L24I 0 36.3 20.5 1.4 1.3

LI 94 0 36.4 19.3 .8 .2

LI 4 8 0 36.5 19.5 , 9 .3 L581 0 36.6 1 8.7 .6 -.4

L262 0 36.7 19.3 1.0 .1 L3 0 9 0 36.8 16.9 -.3 -1.9

LI 90C 0 36. 8 18.8 .8 -.4

L28C 0 36. 8 19.7 1.3 .3

LI 22 0 36. 8 19.2 1.1 -.1

LI 0 0 0 36.9 19.9 1.5 .4 L257B 0 36.9 1 8.7 . 9 -.6

L257C 0 36.9 19.1 1.1 -.3

LI 57 0 37.2 21.3 2.5 1.4

LI 85 0 37.5 20.4 2.3 .5 L587 0 37.7 18.9 1.6 -.8

L224 0 38.1 1 8.8 1.9 -1.1

LI 15 0 38.1 20. 5 2.8 .3

LI 6 6 0 38.1 18.7 1.9 -1.2

L275 0 38.6 18. 1 1.9 -2.0 GMEANS

35.9 18.7

95% ELLIPSE: 5.1 2.2

AVG

R. SDR VAR PROPERTY- --TEST INS3TR1

. 80 1 0 D BURSTING STRENGTH UP T0 2.68 10D BURSTING STRENGTH UP T0 1.11 13D BURSTING STRENGTH UP T0 .73 10D BURSTING STRENGTH UP T0 1.00 10D BURSTING STRENGTH UP T0 1.15 1 0 D BURSTING STRENGTH UP T0

.69 1 0 D BURSTING STRENGTH UP T0 1.35 10D BURSTING STRENGTH UP T0 1.12 1 0 D BURSTING STRENGTH UP T0 .74 10D BURSTING STRENGTH UP T0

.70 10D BURSTING STRENGTH UP T0 2.26 1 0 D BURSTING STRENGTH UP T0 1.09 10D BURSTING STRENGTH UP T0 .36 10D BURSTING STRENGTH UP T0

.94 1 OF BURSTING STRENGTH UP T0 .93 10D BURSTING STRENGTH UP T0 1.27 10D BURSTING STRENGTH UP T0 1.01 10D BURSTING STRENGTH UP T0

1 .38 10D BURSTING STRENGTH UP T0 .72 10D BURSTING STRBNGTH UP T0

.90 10D BURSTING STRENGTH UP T0 1.66 10D BURSTING STRENGTH UP T0 .60 10D BURSTING STRBNGTH UP T0

.79 1 OD BURSTING STRBNGTH UP T0 .99 10D BURSTING STRENGTH UP T6

.99 1 0 D BURSTING STRENGTH UP T0 1.10 1 OF BURSTING STRENGTH UP T0 .60 1 0 D BURSTING STRENGTH UP T0 1.22 1 OD BURSTING STRENGTH UP T0 1.00 10D BURSTING STRENGTH UP T0

.98 1 OD BURSTING STRENGTH UP T0

.73 too BURSTING STRENGTH UP T0 .94 10D BURSTING STRENGTH UP T0 1.11 1 OD BURSTING STRENGTH UP T0 .76 1 OD BURSTING STRENGTH UP T0

.99 1 OD BURSTING STRENGTH UP T0 1.28 10D BURSTING STRENGTH UP T0

1.00 WITH GAMMA - 34 DEGREES

—CONDITIONS

45 PSI, PERKINS CA 0R c. AIR CLAMP

45 PSI, PBRKINS CA 0 R c. AIR CLAMP

45 PSI , PBRKINS CA 0 R C. AIR CLAMP

45 PSI. PERKINS CA 0 R c. AIR CLAMP

45 PSI, PERKINS CA 0 R C, AIR CLAMP

45 PSI, PERKINS CA 0R C. AIR CLAMP

45 PSI, PERKINS CA 0 R c. AIR CLAMP

45 PSI, PERKINS CA 0 R C. AIR CLAMP

45 PSI, PERKINS CA 0 R C. AIR CLAMP

45 PSI, PBRKINS CA 0 R C. AIR CLAMP

45 PSI . PBRKINS CA 0R C, AIR CLAMP

45 PSI, PERKINS CA 0R C, AIR CLAMP

45 PSI, PERKINS CA 0R C. AIR CLAMP

45 PSI , PERKINS CA 0R C. AIR CLAMP

45 PSI. PERKINS C:, 1Ho CLAMP'.TRANSDUCER

45 PSI , PERKINS CA 0R C. AIR CLAMP

45 PSI, PBRKINS CA 0 R C. AIR CLAMP

45 PSI. PERKINS CA 0 R C. AIR CLAMP

45 PSI, PERKINS CA 0 R c. AIR CLAMP

45 PSI. PBRKINS CA 0 R C, AIR CLAMP

45 PSI, PERKINS CA 0R C, AIR CLAMP

45 PSI, PERKINS CA 0 R c. AIR CLAMP

45 PSI , PERKINS CA 0 R C. AIR CLAMP

45 PSI, PERKINS CA 0 R c. AIR CLAMP

45 PSI , PERKINS CA 0 R C. AIR CLAMP

45 PSI, PBRKINS CA 0 R C. AIR CLAMP

45 PSI. PERKINS C 'H. CLAMP .TRANSDUCER

45 PSI , PBRKINS CA 0 R C. AIR CLAMP

45 PSI. PERKINS CA 0 R C, AIR CLAMP

45 PSI, PBRKINS CA 0 R C. AIR CLAMP

45 PSI. PERKINS CA 0R C. AIR CLAMP

45 PSI, PBRKINS CA 0 R C. AIR CLAMP

45 PSI, PERKINS CA 0R C, AIR CLAMP

45 PSI, PERKINS CA 0R C. AIR CLAMP

45 PSI. PERKINS CA OR C. AIR CLAMP

45 PSI, PERKINS CA 0R C. AIR CLAMP

45 PSI . PBRKINS CA 0R C. AIR CLAMP

9
KIL0PASCAL

100

1

10

120

130

140

150

160

170

BURSTING- STRENGTH, M0DEL C-A

SAMPLE H39 = 35.9 PSI SAMPLE H60 = 18-7 PSI

SAMPLE H39 = 247 K I L0PASCAL SAMPLE H60 = 129 K I L0PASCAL

PSI

i

1 1 1 1 1 1 1 1 200 210 220 230 240 250 260 270 280

KIL0PASCAL

10
BBPOBT NO. S2S TAPPI COLLABORATIVE REFBRENCB PROGRAM MARCH 1976 ANALYSIS Tll-1 TABLB 1 BURSTING STRBNGTH. HIGH RANGE, PSI TAPPI STANDARD T403 OS-76. BURSTING STRBNGTH OF PAPER - PERKINS MODEL C 8R CA

SAMPLE KRAFT SAMPLB PRINTING TEST D. - 15 LAB H07 147 GRAMS PER SQUARE MBTBR H2 5 151 GRAMS1 PER SQUARE MBTBR

CODE MEAN DEV N.DBV SDR R. SDR MEAN DBV N. DBV SDR R. SDR VAR F LAB

LI 0 0 70.1 -3.5 -1.15 5.5 .86 53.8 -. 2 -.11 2.2 . 80 11D 0 L100

LI 03 76.1 2.4 .80 3.2 .51 55.3 1.3 .59 2.9 1.06 11C 0 LI 03

LI 07 73.

S

-.2 -.05 6.2 .97 53.9 -.1 -.05 2. 5 .93 lie 0 LI 07

LI 18 76.9 3.2 1.06 5.2 .82 53.7 -.3 — .15 3.6 1.33 11D 0 LI 18

LI 22 73.0 -.6 -.20 6.9 1.10 54.3 .2 .10 2.7 1.00 IIP 0 LI 22

LI 28 73.4 -.2 -.07 3.1 .48 55.3 1.3 .59 2. 0 .72 1 1 D 0 LI 28

LI 4 8 71.2 -2.4 -.79 5.2 .81 54.7 .6 .29 3.4 1 .25 1 ID 0 LI 48

LI 59 70.2 -3.4 -1.12 6.7 1.06 50.9 -3. 1 -1.42 2.8 1.04 11D 0 LI 59

LI 70 74.9 1.3 .43 6.4 1.01 55.0 1.0 .44 2. 5 .91 11C 0 LI 70

LI 74 81.1 7.4 2.44 7.0 1.10 62.1 8. 1 3.69 2.4 .90 1 1 D ft LI 74

LI 82 74.9 1.3 .43 5.1 .81 53.7 -.4 -.17 2.1 .76 1 1 D 0 LI 82

L21 8 77.6 3.9 1.29 6.6 1.05 55.1 1.1 .50 3.6 1 .32 11D 0 L21 8 L232 70.2 -3.4 -1.12 5.6 .89 52.3 -1.7 -.79 3.1 1.13 lie 0 L232

L237A 72.

S

-1.1 -.36 2.5 .40 54.7 .6 .29 1.2 .45 lie 0 L237A L237B 77.2 3.6 1.18 5.1 .81 54.5 .5 .23 1.7 .61 lie 0 L237B

L238A 73.5 -.2 -.05 12.5 1.97 50.2 -3.9 -1.76 3.5 1 .30 UY 0 L238A

L2 4 3 70.8 -2.8 -.93 6.2 .97 52.8 -1.2 -.56 2.4 .87 lie © L243

L273 71.8 -1.8 -.60 5.2 .83 51.3 -2.7 -1.23 2.9 1.05 lie 0 L273

L279 78.1 4.4 1.45 9.5 1.50 57.6 3.5 1.61 3.5 1 .30 lie 0 L279

L28 0 76.9 3.3 1,08 6.7 1.05 56.5 2.4 1.11 2.2 .82 11D 0 L2 80 L294 106.9 33.2 1 0.90 14.5 2.29 52.9 -1.1 -.50 3.9 1.42 lie * L294

L303 68.1 -5.5 -1.80 4.6 .72 51.6 -2.4 -1.10 2.3 .84 lie 0 L303

L330 71.2 -2. 5 -.81 9.8 1.54 57.4 3.4 1.55 2.7 .97 lie 6 L330

L3 31 70.5 -3.1 -1.01 8.9 1.40 56.4 2.4 1.08 3. 4 1.26 lie 0 L331 L333 88.1 14.5 4.76 10.5 1.67 52.1 -1.9 -.87 6.9 2.53 lie ft L333

L3 3 4 74.2 .5 .18 5.7 .89 56.5 2.5 1.12 3.0 1.11 11D 0 L334

L344 79.7 6. 1 2.00 7.6 1.19 50.5 -3.6 -1.63 3.8 1.40 lie » L344

L356 76.3 2.6 .87 8.9 1 . 40 55.6 1.6 .71 2.4 .89 lie 0 L356

L362 69.7 -3.9 -1.29 5.4 .85 54.8 . 8 .35 2.7 1.01 1 1 D 0 L362 L378 73.4 -.2 -.07 5.6 .88 55.8 1.8 .80 2.8 1 .02 1 ID 0 L378

L565 70.4 -3.2 -1.05 3.9 .61 53.9 -. 1 -.06 1.5 .55 1 ID 0 LS65

L5 6 7 72.1 -1.6 -.51 7.0 1.10 48.6 -5.5 -2.49 3. 6 1.33 1 1 D 0 L567

L575 75.5 1.9 .62 9.0 1.42 55.8 1.8 . 80 3.5 1.30 11D 0 L57S

L604 78.5 4.8 1 .59 8.1 1.28 52.7 -1.3 -.61 2.9 1.07 1 1C 0 L604

GR. MEAN • 73.6 PSI GRAND MBAN • 54.0 PSI TBST DETERMINATIONS • 15

SD MEANS - 3.0 PSI SD OF MEANS - 2.2 PSI 31 LABS IN GRAND MEANS AVERAGE SDR - 6.3 PSI AVBRAGE SDR - 2.7 PSI GR . MEAN - 507.6 KIL6PASCAL GRAND MEAN • 372.6 KILOPASCAL

L242 77.2 3.6 1.17 5.6 . 89 57.4 3.4 1.54 2.7 .99 1 IT L242 L250L 70.4 -3.2 -1.05 5.2 .83 50.5 -3. 6 -1.63 1.7 .63 UN L250L

L251 64.0 -9.6 -3.16 7.5 1.19 45.1 -8.9 -4.05 2.7 1.01 11 V L251 L290 71.9 -1.7 -.55 4.4 . 69 57.5 3. 5 1 . 59 1.9 .71 1 1 A L2 90 L39 3 73.5 -.2 -.05 8.2 1.29 54.9 .9 .41 2. 3 .85 111 L393

L394 84.0 10.4 3.40 3.0 .47 61.4 7. 4 3. 36 2.1 .77 1 1H L394

L570 73.9 .2 .08 4.2 . 66 56.5 2.5 1.14 2.3 .85 1 1H L570

L576 78.5 4.8 1.59 3.1 .49 £5.9 1.8 .83 2.5 .92 UP L576

L593 85.4 11.8 3.86 o <0 1.71 62.5 8.4 3.84 4.2 1.55 1 1 J L593 TOTAL NUMBER OF LABORATORIES REPORTING - 43

Best Values: H07 74+4 psi

H25 54 + 3 psi

The following laboratories were omitted from the grand means because of extreme test results: 174,

294, 333.

11
REPORT NO. 52S TAPPI COLLABflR ATI VB REPBRBNCB PROGRAM MARCH 1973 ANALYSIS Tll-i TABLE 2 BURSTING STRENGTH. HIGH RANGB. PSI TAPPI STANDARD TA03 0S-76. BURSTING STRENGTH OF PAPER • PBREINS MODEL C OR C-A

LAB MBANS COORDINATES AVG

C0DB F H07 H2 5 MAJOR MINOR R. SDR VAR PROPBRTY--— TEST INSTRUMENT---CONDITIONS

L251 64.0 45.1 -11.6 -6.0 1.10 11V BURSTING STRENGTH 40 • 100 PSI. L*«T, MANUAL CLAMP. 20C.65* RH

L3 0 3 0 68.1 51.6 -5.9 -.9 .78 11C BURSTING STRENGTH 40 - 1 00 PSI. PBRKINS C. MANUAL CLAMP

L3 6 2 0 69.7 54.8 -3.6 1.8 .93 11D BURSTING STRENGTH 40 - 100 PSI , PERKINS CA. AIB CLAMP

LI 00 0 70.1 53.8 -3. A .7 .83 1 1 D BURSTING STRENGTH 40 - 1 00 PSI. PBRKINS CA, AIB CLAMP

LI 59 0 70.2 50.9 -4.1 -2.1 1.05 11D BURSTING STRBNGTH 40 - 100 PSI, PERKINS CA. AIB CLAMP

L232 0 70.2 52.3 -3.8 -.8 1 .01 11C BURSTING STRENGTH 40 „ 100 PSI , PERKINS C. MANUAL CLAMP L250L 70.4 50.5 -4.0 -2.6 .73 UN BURSTING STRENGTH 40 100 PSI, LH0NARGT, MAN. CLAMP. 20C.65ABH

L565 0 70.4 53.9 -3.1 .7 .58 UD BURSTING STRENGTH 40 100 PSI , PERKINS CA. AIR CLAMP

L331 0 70.5 56.4 -2.4 3.1 1.33 UC BURSTING STRENGTH 40 100 PSI, PBRKINS C. MANUAL CLAMP

L2 43 0 70.8 52.8 -3.1 -.4 .92 UC BURSTING STRENGTH 40 100 PSI. PBRKINS C. MANUAL CLAMP

L330 0 71.2 57. 4 -1.5 3.9 1.26 UC BURSTING STRENGTH 40 100 PSI , PBRKINS C. MANUAL CLAMP

LI 4 8 0 71.2 54.7 -2.2 1.2 1.03 UD BURSTING STRENGTH 40 100 PSI, PBRKINS CA. AIB CLAMP

L273 0 71.8 51.3 -2.5 -2.1 .94 11 C BURSTING STRBNGTH 40 100 PSI . PBRKINS C. MANUAL CLAMP

L2 9 0 71.9 57.5 -.7 3.8 .70 11 A BURSTING STRENGTH 40 100 PSI. PERKINS A. MANUAL CLAMP

L567 0 72.1 48.6 -3.0 -4.9 1.22 11 D BURSTING STRENGTH 40 100 PSI . PBRKINS CA. AIB CLAMP

L237A. 0 72.5 54.7 -.9 .9 .43 UC BURSTING STRENGTH 40 1 00 PSI. PERKINS C. MANUAL CLAMP

LI 22 0 73.0 54. 3 -.5 .4 1.05 UP BURSTING STRBNGTH 40 100 PSI, PBRKINS C . H. CLAMP, TRANSDUCES

L378 0 73.4 £5. 8 .3 1.8 .95 11 D BURSTING STRBNGTH 40 100 PSI, PBRKINS CA. AIR CLAMP

LI 28 0 73. 4 55.3 .1 1.3 .60 UD BURSTING STRENGTH 40 100 PSI, PBRKINS CA, AIB CLAMP

L238A. 0 73.5 50.2 -1 .2 -3.7 1.63 11 Y BURSTING STRENGTH 40 100 PSI. PERKINS CA. AIR CLAMP

L39 3 73.5 54.9 .1 .9 1.07 11 H BURSTING STRBNGTH 40 100 PSI. PERKINS AH, HYDRAULIC CLAMP

LI 07 0 73.5 53.9 -.2 -.1 .95 UC BURSTING STRENGTH 40 100 PSI. PBRKINS C. MANUAL CLAMP

L570 73.9 56.5 .9 2.3 .76 UH BURSTING STRENGTH 40 100 PSI, PBRKINS AH, HYDRAULIC CLAMP

L334 0 74.2 56.5 1 .

2.2 1.00 11 D BURSTING STRBNGTH 40 1 00 PSI, PBRKINS CA, AIB CLAMP

LI 82 0 74.9 53.7 1 .2 -.7 .78 11 D BURSTING STRBNGTH 40 100 PSI, PBRKINS CA. AIR CLAMP

Li 70 0 74.9 55.0 1.5 .6 .96 UC BURSTING STRBNGTH 40 100 PSI . PBRKINS C, MANUAL CLAMP

L575 0 75.5 55. 8 2.3 1.2 1.36 11 D BURSTING STRENGTH 40 100 PSI , PERKINS CA, AIR CLAMP

LI 0 3 0 76.1 £5.3 £.7 .6 .79 UC BURSTING STRENGTH 40 100 PSI . PBRKINS C. MANUAL CLAMP

L3 5 5 0 76.3 55.6 3.0 .8 1.15 11 C BURSTING STRBNGTH 40 1 00 PSI. PERKINS C, MANUAL CLAMP

LI 18 0 76.9 53.7 3.0 -1.2 1.07 UD BURSTING STRBNGTH 40 100 PSI . PERKINS CA, AIR CLAMP

L260 0 76.9 56.5 3.8 1.5 .94 11 D BURSTING STRENGTH 40 1 00 PSI . PBRKINS CA. AIR CLAMP

L242 77.2 57.4 4.3 2. 3 .94 III BURSTING STRBNGTH 40 1 00 PSI. L+ W, MANUAL CLAMP

L237B 0 77.2 54.5 3. 6 -.5 .71 UC BURSTING STRENGTH 40 100 PSI , PBRKINS C, MANUAL CLAMP

L21 8 0 77.6 55.1 4.1 .0 1.19 UD BURSTING STRBNGTH 40 1 00 PSI, PERKINS CA, AIR CLAMP

L279 0 78.1 57.6 5.2 2.2 1.40 UC BURSTING STRENGTH 40 1 00 PSI . PBRKINS C. MANUAL CLAMP

L604 0 79.5 52.7 4.3 -2.6 1.17 UC BURSTING STRENGTH 40 100 PSI, PBRKINS C, MANUAL CLAMP

L576 78.5 55.9 5.2 .5 .70 UP BURSTING STRENGTH 40 100 PSI . PBRKINS LC. MANUAL CLAMP

L344 • 79.7 50.5 4.9 -5.1 1.29 UC BURSTING STRENGTH 40 1 00 PSI . PBRKINS C. MANUAL CLAMP

Li 74 * 81.1 62.1 9.3 5.8 1.00 11 D BURSTING STRENGTH 40 1 00 PSI . PBRKINS CA, AIR CLAMP

L394 84.0 61.4 12.0 4.3 .62 It H BURSTING STRENGTH 40 100 PSI. PBRKINS AH, HYDRAULIC CLAMP

L59 3 85.4 62. 5 13.6 5.0 1.63 11 J BURSTING STRENGTH 40 100 PSI , PERKINS JUMBO, HAND DRIVEN

L3 3 3 H 88.1 52.1 13.5 -5.7 2.10 UC BURSTING STRENGTH 40 100 PSI , PBRKINS C. MANUAL CLAMP

L294 * 1 06.9 52.9 31.8 -9.9 1.85 UC BURSTING STRENGTH 40 1 00 PSI . PBRKINS C, MANUAL CLAMP

GMEANS: 73.6 54.0

95* ELLIPSE

1 .00 5.5 WITH GAMMA *15 DEGRBBS

12
KIL0PRSCRL

300

320

340

3&0

380

400

420

440

• I CO

Q_

BURSTING STRENGTH , HIGH RANGE

SAMPLE H07 = 73.6 PSI SAMPLE H25 = 54.0 PSI

SAMPLE HQ7 = 508 KILOPASCAL SAMPLE H25 = 373 K I L0PASCAL

PSI

I

1 1 1 1 1 1

1 440 460 480 500 520 540 560 580

KIL0PRSCRL

13
REP6RT NtJ. 52S TAPPI COLLABORATIVE RBPBRENCB PROGRAM MARCH 1978 ANALYSIS T1S-1 TABLE 1 TEARING STRENGTH, GRAMS

TAPPI STANDARD T41 A TS-6S. ANT MAKE ELMBNDORF WITH DEEP COTODT IS STANDARD POR THIS ANALYSIS

SAMPLE WRITING

LAB El 1 70 GRAMS PBS SQUARE METER

C0DB MEAN DEV N. DEV SDR R. SDR

LI 00 55.6 -2.5 -.95 1.0 .69

LI 0 3 58.3 .2 .07 .5 .34

LI 0 5 55.8 -2.4 -.89 1.8 1.27

LI 07 62.7 4.5 1.70 1.4 1.01

LI 15 60.4 2.3 . 86 1.3 . 87

LI 18 56.6 -1.6 -.59 1.2 . 86

LI 21 60.0 1.8 .69 2.0 1.39

LI 22 60.0 1 .9 .71 .7 .50

LI 24 62.5 4.3 1.62 1.1 .78

LI 26 59.3 1 .2 .44 1.5 1.07

LI 2 8 58.9 . 8 .29 1.1 .77

LI 3 4 58.5 .4 .14 1.3 .91

LI 39 59.6 1.4 .54 1.9 1.31

LI 4 5 55.5 -2.7 -1.01 2.2 1.53

LI 4 8 57.1 -1.1 -.41 2.8 1 . 96

LI 50 63.7 5.6 2.10 1.3 .93

LI 51 69.9 11.8 4.43 1.4 .96

LI 53 56.3 -1.8 -.69 1.4 .97

LI 57 54.5 -3.7 -1 .39 1.0 . 69

LI 58 53.9 -4.3 -1.62 3.2 2. 20

Li 59 58.5 .3 .12 1.4 .98

LI 62 57.8 -.4 -.14 1.2 . 82

LI 63 57.9 -.2 -.09 1.3 . 89

LI 66 57.7 -.4 -.16 1.3 . 89

Li 67 58.5 .4 .14 .9 .64

LI 70 55.1 -3.1 -1.16 1.0 .72

LI 73B 58.5 .4 .14 1.4 .98

LI 74S 60.5 2.4 .89 2.9 2. 00

LI 82 A 56.1 -2.1 -.79 1.6 1.10 L182T 60.3 2.1 .79 1.2 . 85

Li 83 58.1 -.0 -.01 1.6 1.11

LI 85 42.5 -15.6 -5.88 1.2 .83

LI 90C 56.2 -2.0 -.74 .9 .65

LI 90R 60.7 2.6 .97 1.5 1.03

LI 91 60.1 2.0 .74 1.4 . 98

LI 94 60.1 1.9 .73 2.5 1.74

Li 95 60.8 2.6 .99 1.3 . 88 L206 59.7 1 .S .57 2.4 1.70

L207 53.1 -5.1 -1.91 1.5 1.08

L211 57.1 -1.0 -.39 1.5 1.01

L21 3 59.0 . 8 .32 1.2 .83

L21 7 56.6 -1.6 -.59 .9 .63

L2 2 3 59.4 1.3 .46 .7 . 46 L224 55.3 -2.9 -1.09 1.9 1.30

L22 5 61.1 2.9 1 .09 1.1 .77 L226B 52.9 -5.2 -1.97 1.6 1.14 L226C 52.4 -5.8 -2.17 1 .0 . 68

L2 2 8 55.5 -2.6 -.99 1.3 . 91 L232 57.3 -.8 -.31 1.0 . 68 L233 64.5 6.4 2.40 1.3 .91

L2 3 5 54.3 -3.8 -1.44 1.2 . 86 L237A 57.3 -.8 -.31 1.4 1.01 L237B 58.4 .2 .09 1.1 .78 L238A 54.5 -3.6 -1.37 .9 . 64

L2 41 57.5 -.6 -.24 1.6 1.12

L243 58.5 .4 .14 1.1 .74 L244 57.4 -.8 -.29 1.2 . 86

L2 49 59.0 .8 .32 1.0 .73

L2 54 59.1 .9 .34 1.0 .72 L257A 57.7 -.4 -.16 2.1 1.48 L257B 58.3 . 1 .04 1.7 1.16

L257C 58.4 .2 .09 1.9 1.31 L259 62.4 4.2 1.60 .7 . 51 L261 53.9 -4.2 -1.59 1.6 1.13

L262 58.0 -.2 -.06 .7 .46

SAMPLE BROWN KRAFT TBST D. - 15

El 7 74 GRAMS PER SQUARE METER

MBAN DBV N. DBV SDR R. SDR VAR P LAB

58.2 -2.6 -.77 2.0 1.01 15M 0 L100

60.3 -. 5 -.14 1.5 .78 1ST 0 LI 03 58.3 -2.5 -.75 4.5 2.24 1ST 0 LI 05 65.9 5.1 1.52 1 .

.89 15T 0 LI 07 61.7 .9 .26 1.6 .80 15C 0 LI 15 59.7 -1.1 -.32 1.9 .98 1ST 9 LI 18 59.2 -1.6 -.48 2.1 1.06 15T 9 LI 21 62.0 1.2 .35 2.0 1.01 1 5C 0 LI 22 62.5 1.7 .50 2.2 1.09 1ST 0 LI 24 63.7 2.9 .86 2.5 1.26 1 5T 0 LI 26

62.6 1.8 .54 1.9 .95 15T 0 LI 28 62.2 1.4 .42 1 .

.90 1 5T 0 LI 34 63.2 2. 4 .72 2.1 1.05 15T 0 LI 39 56.9 -3.9 -1.19 2.2 1.09 1ST 0 LI 45 59.2 -1.6 -.48 2.7 1.36 1ST 0 LI 48 63.2 2.4 .72 2.3 1.18 15T 0 LI 50 73.7 12.9 3.90 2.1 1.05 15C X LI 51 56.9 -3.9 -1.19 1.9 .95 15C 9 LI 53 58.7 -2. 1 -.65 2.1 1.07 1ST 0 LI 57 73.1 12.3 3.69 2.5 1.25 15R X LI 58

65.4 4.6 1.38 2.6 1.29 1 5L 0 LI 59 61.2 . 4 .13 1.5 .75 1 5T 0 LI 62 59.0 -1 .

-.54 2.3 1.16 15T 0 LI 63 59.4 -1.4 -.42 2.0 1.00 1ST 0 LI 66 64.9 4.1 1.24 1.0 .52 15C 0 LI 67 59.8 -1.0 -.30 .4 .21 15T 0 LI 70 57.8 -3.0 -.91 1.5 .74 15T 0 L173B

67.7 6.9 2.09 4. 1 2.08 15T 0 L174S 63.7 2.9 . 88 4.0 2.02 15A 9 LI 82 A 65. 2 4.4 1.32 1.7 .85 1 5T 0 L182T

58.7 -2.1 -.63 2.0 1 .00 1 5T 0 LI 83 45.5 -15.3 -4.62 1.0 .50 1 5T * LI 85 55.7 -5.1 -1.53 1.8 . 88 1ST 0 LI 90C 62.3 1.5 .44 1.7 . 86 15C 0 LI 90R

64.1 3. 3 1.00 1.8 .89 15T 0 LI 91

61.7 .9 .28 1.7 . 86 15T 0 LI 94 61.2 . 4 .12 2.6 1 .31 15C 0 LI 95 62.3 1.5 .46 2.0 1.02 1ST 0 L206

89.0 28. 2 8.51 3.3 1.67 15R * L207

58.3 -2.5 -.77 1.9 .96 1 5R 0 L211 62.7 1.9 .56 1.2 .62 1 5T 0 L213

63.3 2.5 .74 2.1 1.05 15T 0 L21 7 61.2 . 4 .12 1.5 .76 1 5R 0 L223

55.4 -5. 4 -1.63 1.2 .60 1ST 0 L224 64.9 4.1 1.24 1.2 .59 1 5T 0 L225

53.3 -7.5 -2.26 2. 0 1.00 15T 0 L226B

53.4 -7.4 -2.23 1 .

.64 15T 0 L226C

56.3 -4.5 -1.37 2.0 1.01 15T 0 L228

63.1 2.3 .68 2.1 1.07 15T 0 L232

67. 5 6.7 2.01 2.4 1.23 15T 0 L233

57.5 -3.3 -.99 1.4 .68 1 5T 0 L236

62.4 1.6 .48 2.3 1.15 15T 0 L237A

61.9 1.1 .32 1.6 .80 15T 0 L237B

57.3 -3.5 -1.05 2.2 1.12 15T 0 L238A

63.2 2.4 .72 1.2 .61 15T 0 L241 62.5 1.7 .50 2.0 .99 15T 0 L243

61.1 .3 .08 1.6 .82 1 5C 0 L244 63.5 2.7 . 80 2.3 1.17 15T 0 L249 60.7 -.1 -.04 2.0 .98 15T 0 L254

62.0 1.2 .36 1.5 .76 15C 9 L2S7A

61.9 1.1 .32 1.6 . 80 15C 0 L257B

61.9 1.1 .32 1.9 .97 15C 0 L257C

60.9 .1 .02 1.8 .91 1ST 0 L259

57.3 -3. 5 -1.05 2.2 1.09 1ST 0 L261 60.7 -.1 -.02 . 8 .40 15T 0 L262 14
REPORT N0. 52S TAPPI COLLABORATIVE REFERENCE PROGRAM MARCH 1978 ANALYSIS T15-1 TABLE 1 TEARING STRENGTH. GRAMS

TAPPI STANDARD T41 A TS-65, ANY MAKE ELMBND0RF WITH DEEP CUTOUT IS STANDARD POR THIS ANALYSIS

SAMPLB WRITING SAMPLB BROWN X RAFT TEST D. - IS LAB Ell 70 GRAMS PER SQUARE METER El 7 74 GRAMS PER !SQUARE METER

CODE MEAN DBV N.DBV SDR R. SDR MEAN DEV N. DEV SDR R. SDR VAR F LAB

L264 70.4 12.2 4.61 5.4 3.76 91 .7 30.9 9.32 2.8 1 .42 1ST * L2 64

L2 6 8 58.7 .5 .19 1.2 . 86 62.7 1.9 .56 .6 .31 1 5T 0 L268

L273 57.6 -.6 -.21 2.3 1 . 60 62.4 1.6 .48 1.6 .80 15T 0 L2 73 L275 59.7 1 .5 .57 1.3 .90 64.5 3.7 1.12 1.8 .93 1 5T 0 L275

L277 46.7 -11 .

5

-4.33 2.0 1 . 36 47.7 -13.1 -3.94 2.0 1.00 15T * L2 77 L278 60.0 1.8 .69 2.8 1.97 63.8 3.0 .90 6.9 3.49 1 5T 0 L278

L2 79 57.7 -.5 -.19 1.2 . 86 61.7 .9 .28 2.3 1.18 15T 0 L279

L280 55.9 -2.2 -.84 .9 .61 60.1 • • 7 -.22 1.7 . 86 1 5L 0 L280

L281 55.9 -2.2 -.84 1.0 .67 57.9 -2.9 -.87 1.4 .70 1 5T 0 L281 L288 61.6 3.4 1 .29 1.1 . 80 63.6 2.8 . 85 2.3 1.16 15Q 0 L288

L290 58.1 -.1 -.04 1.6 1.10 63.5 2.7 .82 2.6 1.32 1 5T 0 L290

L291 57.7 -.5 -.19 1.2 .82 60.9 .1 .04 1.6 .82 15A 0 L291 L299 62.3 4.1 1.55 1.5 1.03 64.4 3.6 1.08 1.7 .87 1ST 0 L2 99 L303 54.6 -3.0 -1.34 1.9 1.31 53.3 -7.5 -2.27 1.9 .98 1 5L 0 L303

L309 56.6 -1.6 -.59 1.5 1.08 59.9 -.9 -.26 2.1 1.07 15T 0 L309

L31

1

58.9 .8 .29 1.0 .67 60.1 -. 7 -.20 3.2 1.63 1ST 0 L311

L31 2 56.8 -1.4 -.51 3.0 2.09 55.1 -5.7 -1.73 2.3 1.13 1 5T 0 L31 2 L31 5 59.3 1.1 .42 1.1 .77 61.3 . 5 .14 2.8 1.43 1ST 0 L315

L321 56.4 -1 .8 -.66 1.1 .78 54.7 -6.1 -1.85 1.2 .62 15T 0 L321 L324 60.7 2.5 .94 2.1 1.43 62.1 1.3 .40 2.0 .99 15T 0 L324

L328 52.2 -6.0 -2.24 2.6 1.81 55.1 -5.7 -1 .71 1.6 .78 15T 0 L328

L331 52.9 -5.2 -1.97 1.3 .89 54.5 -6. 3 -1.91 1.6 .80 15T 0 L331 L334 54.9 -3.2 -1.21 1.0 .72 56.0 -4.8 -1.45 1.4 .69 15T 0 L334

L3 3 6 57.2 -1.0 -.36 1.2 .84 59.6 -1.2 -.36 1.8 .93 15T 0 L336

L344 58.7 .5 .19 1.8 1.25 59.6 -1.2 -.36 2.3 1.15 1 5C 0 L344

L3 4 5 55.5 -2.7 -1.01 2.1 1.44 60.5 -.3 -.08 3.0 1.50 1 5T 0 L345

L352 61 .0 2.8 1 . 06 1.7 1.18 62.1 1.3 .39 1.8 . 88 15C 0 L352

L3 6 0 57.1 -1.1 -.41 1.1 .78 61.1 . 3 .09 1.5 .75 15T 0 L360

L362 54.9 -3.2 •1.21 1.5 1.03 58.3 -2.5 -.77 1.7 .84 1ST 0 L362

L3 6 6 54.5 -3.6 -1.37 1.6 1.11 55.6 -5.2 -1.57 1.7 .87 15T 0 L366

L37 6 60.9 2.8 1 .04 1.7 1.16 58.9 -1.9 -.57 2.9 1.47 1 5T 0 L376

L378 58.1 -.1 -.04 1.5 1.07 60.1 -.7 -.22 1.8 .88 15T 0 L378

L382 63.1 4.9 1 .85 1.4 .96 66.3 5.5 1.65 1.8 .90 15T 0 L382

L390 57.7 -.4 -.16 1.3 .89 59.5 -1.3 -.40 1.8 .89 15T 0 L390 L396M 50.4 -7.8 -2.92 2.8 1.98 82.0 21.2 6.39 4.7 2.38 15T * L396M

L442 65.8 7.6 2.86 1.7 1.16 67.2 6.4 1 .93 2.3 1.17 15R * L4 42 L484 60.7 2.5 .94 2.2 1.55 74.4 13.6 4.10 4.3 2.16 1 ST ft L484

L554 65.7 7.5 2.83 1.0 . 68 65.5 4.7 1.42 1.8 .93 1 5C * L554

L562 62.7 4.5 1.70 2.6 1.78 78.6 17.8 5.36 9. 5 4.77 15T ft L562

L565 55.7 -2.4 -.91 2.5 1.71 59.5 -1.3 -.40 1.5 .73 1 5T 0 L565

L566 56.9 -1.2 -.46 1.5 1.03 67.3 6. 5 1 .97 1.8 .91 15T X L566

L56 7 60.5 2.3 .87 1.4 .94 64.3 3. 5 1.04 2.1 1.07 15C 0 L567

L5 75 57.0 -1.2 -.45 1.3 . 88 61.3 .5 .15 2.0 .98 1 5L 0 L575

L576 60.6 2.4 .92 1.8 1.23 67.3 6. 5 1 .97 2.1 1.07 1ST 0 L576

L580 57.7 -.4 -.16 .8 .56 58.7 -2.1 -.63 1.6 .82 1 ST 0 L580

L5 81 59.0 .8 .32 1.2 .82 61.1 . 3 .09 1.9 .97 ISO 0 L581 L587 56.5 -1.6 -.61 1.4 .98 54.0 -6.8 -2.05 1.3 .66 1 ST 0 L587

L596 56.8 -1.4 -.51 3.1 2.16 66.1 5.3 1.60 5.6 2.83 1ST » L596

L599 58.1 -.0 -.01 1.2 .87 59.8 -1.0 -.30 2.5 1.26 15T 0 L599

L600 59.9 1.7 .64 1.4 .98 61.6 .8 .24 2.1 1.04 15T 0 L600

L604 52.3 -5.9 -2.22 2.4 1.65 80.8 20.0 6.03 2.7 1.36 15T * L604

L6 0 6 56.5 -1.7 -.64 1.4 .94 61 .4 .6 .18 1.9 .97 15T 0 L606

GR. MEAN - 5 8.2 GRAMS GRAND MBAN • 60.8 GRAMS TBST DETERMINATIONS - 15 SD MEANS - 2.7 GRAMS SD OP KBANS • 3.3 GRAMS 106 LABS IN GRAND MBANS AVERAGE SDR • 1.4 GRAMS AVERAGE SDR 2.0 GRAMS

GR. MEAN - 570.4 MILLINBWTSN GRAND MEAN - 596.3 MILLINEWT0N

Best Values: Ell 58 + 4 grams Please see the diagram on the inside of the back

FI 7 A1 X A cover of this report which shows how to distinguish — 6 between an Elmendorf tear tester with DEEP CUTOUT

The following laboratories were omitted from the grand means because of extreme test results: 185, 207, 264, 277, 396M, 484, 562, 604. Data from the following laboratories appeared

to be off by a multiplicative factor: 221, 230,

255, 561. Code 15V was assigned temporarily to put in a factor of 2. Data from the following laboratories were

given X codes and omitted from the grand means because the tests were made on NO CUTOUT tear testers: 602.

and an older model tester with NOT CUTOUT.

15
REPORT NO. 52S TAPP I COLLABORATIVE REFERENCE PROGRAM MARCH 1978 ANALYSIS T15-1 TABLE 1 TEARING STRBNGTH. GRAMS

TAPPI STANDARD T41 A TS-65, ANY MARE ELMENDORF WITH DEEP CUTOUT IS STANDARD FOR THIS ANALYSIS

LAB SAMPLE

Ell 70 GRAMS

WRITING

PBR SQUARB METER

SAMPLE

B17 BB6VN KRAFT74 GRAMS PBR SQUARE MBTBR TEST D.-1 15 CODE MEAN DEV N.DBV SDR R. SDR MBAN DBV N. DBV SDR R. SDR VAR F LAB

L221 60.8 2.6 .99 1.9 1 . 35 65.3 4.5 1 .36 1.7 . 86 1 5V L221

L2 30 57.3 -.9 -.34 .8 .58 61.7 .9 .26 2.2 1.08 15V L230

L250L 64.7 6.5 2.45 1.5 1.07 77.0 16.2 4.87 1.4 .69 1 5H L250L

L2 51 56.9 -1.3 -.49 1.6 1.08 62.8 2.0 .60 2.3 1.18 15E L251 L255 61.5 3.3 1 .24 1.4 .98 61.3 .5 .16 2.1 1.05 15V L255

L531 58.3 .2 .07 1.8 1.22 58.9 -1.9 -.57 2.1 1.07 15E L531

L561 59.9 1.7 .64 1 .4 .98 62.0 1.2 .36 2.0 1.01 15V L561 L602 58.6 .4 .17 .8 .58 57.0 -3. 8 -1.15 1.0 .50 15X L602

L61 0 59.3 1.1 .42 1.2 .81 59.9 i9 — • 28 2.6 1.33 15B L610 TOTAL NUMBER OF LABORATORIES REPORTING - 126

16
F

*0

0o

0

o

0

6

0X

0

00

0

0

00

0

0

0

0

00

0

0

00

0

0

0

0

0

0

00

0

0

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0

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0

00

0

0

00

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0

0

0

0

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0

00

0

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0

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N0. 52

S

TAPPI C0LLAB0RATI VE REFERENCE PROGRAM MARCH 1970 ANALYSIS T15-1 TABLB 2 TEARING STRBNGTH. GRAMS

TAPPI STANDARD T41 4 TS-65, ANY MAKE ELMBND0RF WITH DEEP CUTOUT IS STANDARD P0R THIS ANALYSIS

MBANS COORDINATES AVG

Ell B17 MAJOR MINOR B. SDR VAR PROPERTY-- -TEST INSTRUMENT-*—CONDITIONS

42.5 45.5 -21.6 3.4 .66 1ST TBARING STRENGTH. STANDARD, THWING-BL MEND0RFC SCALE TO 100 ) 46.7 47.7 -17.4 1.4 1.18 1 5T TEARING STRBNGTH. STANDARD, THWING-EL 4END0RF( SCALE TO 100 ) 50.4 82.0 12.4 18.9 2.18 15T TBARING STRENGTH. STANDARD, THWI NG-EL MBND0RF( SCALE TO 100 ) 52.2 55. 1 -8.1 1.4 1.29 1ST TEARING STRBNGTH. STANDARD, THWI NG- EL MEND0RF< SCALE TO 1 00 ) 52.3 80.8 1 2. 5 16.7 1.51 1 5T TBARING STRENGTH, STANDARD, THWING-BLMEND0RF( SCALE TO 100 ) 52.4 53.4 -9.4 .2 .66 15T TEARING STRBNGTH, STANDARD, THWING-ELMBND0RF( SCALE TO 1 00 ) 52.9 53.3 -9.2 -.3 1.07 1 5T TEARING STRENGTH, STANDARD. THWI NG-BLMBND0RF( SCALE TO 100 ) 52.9 54.5 -8.2 .4 .85 15T TBARING STRENGTH. STANDARD. THWI NG- ELMEND0RF( SCALE TO 1 00 ) 53.1 89.0 19.6 20.9 1.37 15B TBARING STRBNGTH, STANDARD. T HWING-BL MENDORF, DIGITAL READOUT

53.9 73.1 7,3 10.8 1.73 15R TBARING STRBNGTH, STANDARD, THWING-EL iENDORF, DIGITAL READOUT

53.9 57.3 -5.3 1 .3 1.11 1 5T TEARING STRENGTH. STANDARD, THWING-ELMBND0RF( SCALE TO 1 OC ) 54.3 57.5 -*.9 1.1 .77 1 5T TBARING STRENGTH, STANDARD. THWING-ELMENDORF( SCALE TO 100 ) 54. 5 58. 7 -3.9 1.7 .88 1ST TEARING STRENGTH, STANDARD. THWING-ELMEND0RF( SCALE TO 100 ) 54.5 55.6 -6.3 -.2 .99 1 5T TBARING STRENGTH. STANDARD. THWING-ELMEND0RF( SCALE TO 100 ) 54.5 57.3 -5.0 .8 .88 15T TBARING STRENGTH, STANDARD. THWING-ELMENDORF( SCALE TO 100 ) 54.6 53.3 -8.2 -1.6 1.14 15L TEARING STRENGTH, STANDARD, L0RBNTZ- WETTRES

54.9 58. 3 -4.0 1.1 .94 15T TBARING STRBNGTH, STANDARD, THWING-EL MENDORFf SCALE -O 100 ) 54.9 56. 0 -5.8 -.3 .70 15T TEARING STRENGTH, STANDARD. THWING-BL MEND 0 RFC SCALE TO 1 00 ) 55.1 59.0 -2.7 1.9 .46 15T TEARING STRENGTH. STANDARD, THWING- ELMBND0RFC SCALE TO 100 ) 55.3 55.4 -6.1 -.9 .95 1 5T TBARING STRBNGTH, STANDARD, THWING- ELMEND0RF( SCALE TO 1 t 0 ) 55.5 56.9 -4.8 - • 2 1.31 1 5T TEARING STRBNGTH, STANDARD. THW ING- ELMEND0 RF( SCALE ro 100 ) 55. 5 60.5 -1.8 2.0 1.47 1 5T TBARING STRENGTH, STANDARD, THWING- BLMENDORFC SCALE T0 100 ) 55. 5 56.3 -5.2 -.6 .96 1 5T TEARING STRBNGTH, STANDARD. THWING- ELMEND0RF( SCALE TO 100 ) 55.6 58.2 -3.6 .5 .85 15M TEARING STRENGTH, STANDARD. T. M. MI RFIELDC APPTTA-ELMEND0RF

)

55.7 59.5 -2.5 1.1 1.22 1ST TEARING STRENGTH, STANDARD, THWING-EL'IBND0RF( SCALE TO 100)

55. 8 58.3 -3.4 .4 1.75 1ST TEARING STRENGTH. STANDARD, THWING- EL MEND0RF( SCALE TO 100 ) 55.9 57.9 -3,6 .1 .68 1ST TBARING STRBNGTH, STANDARD, THWING-ELMEND0RF( SCALE TO 100 ) 55.9 60.1 -1.9 1 .3 .74 1 5L TEARING STRBNGTH, STANDARD, L0RBNTZ- WETTRES

56.1 63.7 1.1 3.4 1.56 1 5 A TEARING STRENGTH, STANDARD, APPITA

56.2 55.7 -5.2 -1.5 .77 1ST TEARING STRBNGTH, STANDARD, THWING-ELMBND0RF( SCALE TO 100 )

56. 3 56.9 -4.3 -.9 .96 15C TEARING STRENGTH, STANDARD. THWI NG-ELvfENDORF I W,, A I R CLAMP

)

56.4 54.7 -6. 0 -2.3 .70 15T TEARING STRENGTH, STANDARD. THWING-ELMEND0RF( SCALE TO 100 ) 56. 5 61.4 -.5 1.7 .95 1 5T TBARING STRENGTH. STANDARD. THW ING-EL MEND0RF( SCALE TO 100 ) 56.5 54.0 -6.4 -2.8 .82 1 5T TBARING STRBNGTH, STANDARD, THWI NG-ELMEND0RF( SCALB TO 1 00 ) 56. 6 59.9 -1.6 .7 1.07 15T TEARING STRENGTH, STANDARD, THWING-ELMEND0RF( SCALE TO 100 ) 56.6 59.7 -1.8 .6 .92 15T TEARING STRBNGTH. STANDARD, THW ING- BL MEND0RF< SCALE TO 1 00 ) 56.6 63.3 1.0 2.7 .84 15T TEARING STRBNGTH, STANDARD, TH WING- EL MEND 0RP( SCALE TO 100 ) 55.8 66.1 3.6 4.3 2.49 15T TBARING STRBNGTH, STANDARD, THW ING- EL MEND0RF( SCALE T0 100 ) 56.8 55.1 -5.4 -2.3 1.61 15T TEARING STRENGTH, STANDARD, THWING-EL *END0RF< SCALE TO 100 ) 56.9 62.8 .8 2.2 1.13 1 5K TEARING STRENGTH, STANDARD, L0RENTZ- WETTRES, 20 c. 65% RH 56.9 67.3 4.5 4.9 .97 1ST TBARING STRBNGTH, STANDARD. THWING-EL 4BND0RF< SCALE TO 100 ) 57.0 61.3 -.3 1.2 .93 15L TEARING STRENGTH, STANDARD, L0RENTZ-WBTTRES

57. 1 59.2 -1.9 -.1 1.66 15T TBARING STRENGTH, STANDARD, THWING-ELMEND0RF( SCALE TO 100 ) 57.1 61 .

1

-.4 1.1 .77 15T TEARING STRBNGTH, STANDARD, THWING-EL 4END0RF( SCALE TO IOC ) 57.1 58.3 -2.7 -.7 .99 15H TEARING STRENGTH, STANDARD, TH W I NG- EL MEN DO RF, DIGITAL READOUT

57.2 59.6 -1.5 .0 .88 15T TBARING STRENGTH. STANDARD, THWING-EL <BND0RF( SCALE T0 100 ) 57. 3 61.7 .2 1.2 .83 15V TEARING STRENGTH, STANDARD, THWING-ELMBND0RF( SCALE TO 100 )X2 57.3 62.4 .8 1.6 1.08 1 5 T TEARING STRENGTH, STANDARD, THWING-BLMEND0RP< SCALE T0 100 ) 57.3 63. 1 1.3 2.0 .87 15T TBARING STRENGTH, STANDARD, THWING-ELMEND0RF( SCALE TO 100 > 57.4 61.1 -.2 .8 .84 15C TEARING STRENGTH, STANDARD, THWING-BLWEND0RF { W. AIR CLAMP)

57. 5 63.2 1.5 1.9 . 86 1 5T TBARING STRENGTH, STANDARD, THWING-ELMEND0RF( SCALE TO 100 ) 57.6 62.4 .9 1 .4 1.20 15T TEARING STRENGTH. STANDARD, THWING-EL VEND0RF( SCALE TO 100 ) 57.7 60.9 -.2 .5 .82 1 5 A TEARING STRENGTH, STANDARD, APPITA

57.7 61.7 .4 .9 1.02 1 5T TEARING STRENGTH, STANDARD, THWING-EL MEND0RF( SCALE TO 100 ) 57. 7 58.7 -1.9 -.9 .69 15T TBARING STRENGTH, STANDARD, THWING-EL iEND0RF( SCALE TO 100 ) 57.7 59.5 -1.3 -.5 .89 1 5T TBARING STRENGTH. STANDARD, THWING- EL iBND0RP( SCALE TO 100 ) 57.7 59.4 -1.4 -.5 .95 15T TEARING STRENGTH, STANDARD, THWING-ELMEND0RF( SCALE TO 100 ) 57.7 62.0 .7 1.1 1.12 1 5C TBARING STRBNGTH, STANDARD, THWING-EL IEND0RF ( W. AIR CLAMP)

57.8 61.2 .1 .5 .79 1ST TBARING STRBNGTH, STANDARD, THWING-BLMEND0RF( SCALE TO 100 ) 57.9 59.0 -1.6 -.9 1.02 15T TEARING STRBNGTH, STANDARD. THWING-ELMEND0RF( SCALE TO 100 ) 50.0 60.7 -.2 .1 .43 1ST TEARING STRENGTH, STANDARD, THWING-ELMEND0RF( SCALE TO 100 ) 58.1 60.1 -.7 -.4 .97 1 5T TBARING STRBNGTH, STANDARD, TH W ING- EL MEND0RF( SCALE TO 100 ) 58.1 63.5 2.1 1.7 1.21 1 5T TEARING STRENGTH, STANDARD, THWING-ELMEND0RF( SCALE TO 1 00 ) 58.1 59.0 -.8 -.6 1.07 1 5T TEARING STRENGTH, STANDARD, THWING-EL <END0RF( SCALE TO 100 ) 58. 1 58.7 -1.7 -1.2 1.05 1ST TEARING STRBNGTH, STANDARD, THWING-ELMEND0RFC SCALB TO 100 )

17
REPORT NO. 52S TAPPI COLLABORATIVE RBFBRENCB PROGRAM MARCH 1978 ANALYSIS T15-1 TABLB 2 TEARING STRENGTH, GRAMS

TAPPI STANDARD T414 TS-65. ANY MAKE ELMENDORF WITH DBEP COTOOT IS STANDARD FOR THIS ANALYSIS

LAB MEANS COORDINATES AVG

C0DE F Ell El 7 MAJOR MINOR R. SDR VAR PROPBRTY— -TBST INSTRUMENT— ——CONDITIONS

L257B e 58.3 61.9 .9 .5 .98 15C TEARING STRENGTH, STANDARD, THWI NQ-BLWBNDORP ( W. AIR CLAMP)

L531 58.3 58.9 -1.4 -1.3 1.15 15E TBARING STRBNGTH, STANDARD. THWI NG-ELMBNDORF, AMBIENT COND.

LI 03 0 58.3 60.3 -.3 -.4 .56 15T TEARING STRBNGTH, STANDARD, THWINO-ELMENDORF( SCALE TO 100

L257C 0 58.4 61.9 1.0 .4 1.14 15C TBARING STRBNGTH, STANDARD, THWI NG-BLMBNDORF ( W. AIR CLAMP)

L237B 0 58.4 61.9 1.0 .4 .79 15T TEARING STRBNGTH, STANDARD, THWING-BL MEND0RF( SCALB TO 100

LI 5 9 0 58.5 65.4 3.9 2.5 1.13 15L TEARING STRENGTH. STANDARD. LORBNTZ-WBTTRBS

LI 34 0 58.5 62.2 1.3 .5 .90 15T TEARING STRBNGTH. STANDARD, THWING-BLMENDORP! SCALE TO 100 ) LI 67 0 58.5 64.9 3.5 2.2 .58 15C TEARING STRBNGTH. STANDARD, THWING-BLWBNDORF ( W. AIR CLAMP)

L24 3 0 58.5 62.5 1.6 .7 .86 1 5T TBARING STRBNGTH, STANDARD, THWING-BLMENDORP! SCALB TO 100

LI 73B 0 58.5 57.8 -2.2 -2.1 . 86 15T TEARING STRENGTH, STANDARD, THWING-BL MENDORF! SCALE TO 100)

L6 0 2 58.6 57.0 -2.8 -2.6 .54 151 TEARING STRBNGTH, STANDARD: GIVB INSTRUMENT MARE, MODEL

L268 0 58.7 62.7 1.8 .7 .58 1ST TBARI NG STRENGTH, STANDARD, THWING-BLMENDORP! SCALE TO 100 ) L344 0 58.7 59.6 -.7 -1 .1 1.20 15C TBARING STRBNGTH. STANDARD, THWING-BLMENDORP I W. AIR CLAMP)

LI 28 0 58.9 62. 6 1.9 .5 .86 15T TEARING STRBNGTH, STANDARD, THWING- ELMBNDORF! SCALB TO 100)

L311 0 58.9 60.1 -.1 • •— o 1.15 15T TEARING STRBNGTH, STANDARD, THWING— ELMENDORF! SCALB TO 100)

L581 0 59. 0 61.1 . 7 -.5 . 89 15Q TEARING STRBNGTH. STANDARD, THWING-BLMENDORP, AIR CLAMP, DIGITL

L21 3 0 59.0 62.7 2. 0 .4 .73 15T TBARING STRENGTH, STANDARD, THWINO-ELMENDORFi SCALB TO 100

L249 0 59.0 63.5 2.6 .9 .95 15T TEARING STRENGTH, STANDARD, THWING- ELMENDORF! SCALE TO 100)

L254 0 59.1 60.7 .4 -.8 .85 15T TEARING STRENGTH, STANDARD, TH WI NG-BL MBNDORP! SCALE TO 100

L610 59.3 59.9 -.1 -1.4 1.07 1 5E TEARING STRENGTH. STANDARD, THWI NG-BLMBND0RF , AMBI ENT C0ND.

L31 5 0 59. 3 61.3 1 .0 -.6 1.10 1 5 T TBARING STRENGTH, STANDARD, THWI NG-EL MEND0RP( SCALE TO 100

LI 2 6 0 59.3 63.7 3.0 .8 1.17 1 5T TEARING STRENGTH. STANDARD, THWING-BL 4BND0RP( SCALE TO 100

L223 0 59.4 61.2 1.1 -.8 .61 1 5 R TEARING STRENGTH, STANDARD, THWING- ELMENDORF, DIGITAL READOUT

LI 39 0 59.6 63. 2 2. 8 .3 1.18 1 5T TBARING STRENGTH, STANDARD. THWI NG-BL *END0RF< SCALB TO 100

L2 0 6 0 59.7 62.3 2. 1 -.3 1.36 1 5T TBARING STRENGTH, STANDARD. THWI NG-EL MBND0RF( SCALE TO 100

L27 5 0 59.7 64.5 3.9 1.0 .91 1 5T TBARING STRENGTH. STANDARD, THWING- BL MEND0RF< SCALE TO 100)

L561 59.9 62.0 2.0 -.7 .99 15V TBARING STRBNGTH. STANDARD, THWING-BLMEND0RF( SCALE TO 100 )X2 L600 0 59.9 61.6 1.7 -.9 1.01 1 5T TBARING STRBNGTH. STANDARD, THWING- ELMBND0 RP( SCALE TO 100)

LI 21 0 60.0 59.2 -.2 -2.4 1.23 1ST TBARING STRENGTH. STANDARD, THWING-EL WBND0RP< SCALE TO 100

L2 7 8 0 60.0 63.8 3.5 .3 2.73 15T TEARING STRENGTH. STANDARD, THWING-ELMEND0RF( SCALB TO 100)

LI 2 2 0 60. 0 62.0 2.1 -.8 .75 1 5C TBARING STRENGTH. STANDARD, THWI NG- BLMBND0RF C W. AIR CLAMP)

LI 9 4 0 60.1 61.7 1.9 -1 .0 1.30 15T TBARING STRE NOTH. STANDARD. THW ING-BLMBND0RPC SCALE TO 100 ) LI 9

0 60.1 64.1 3.8 .4 .93 15T TBARING STRBNGTH. STANDARD. THWING-BL IBND0RF( SCALB TO 100)

LI 820 60.3 65.2 4.8 .9 .85 1 5 T TBARING STRBNGTH. STANDARD, THV ING-BLMBND0RF< SCALE TO 100

LI 1 5 0 60.4 61.7 2.0 -1.3 . 84 1 5C TBARING STRENGTH. STANDARD, THWI NG-BLMBND0RF ( W. AIR CLAMP)

L567 0 60. 5 64.3 4.2 .2 1.01 15C TBARING STRE NGTH. STANDARD. THWI NG-BLtf END0RF ( W. AIR CLAMP) L174S 0 60.5 67. 7 7.0 2.2 2.04 15T TBARING STRBNGTH. STANDARD, THWING-BL <BND0RF< SCALB TO 100

L576 0 60.6 67. 3 6.7 1 .9 1.15 15T TEARING STRENGTH. STANDARD. THWING-EL\IEND0RF( SCALE TO 100)

L324 0 60.7 62.1 2. 6 -1 .2 1.21 1 5T TEARING STRENGTH, STANDARD. THWING-EL WBND0RP( SCALE TO 100)

L484 * 60.7 74.4 12.4 6.1 1 . 85 1 5T TEARING STRBNGTH, STANDARD, THWING- EL MEND0RP( SCALE TO ICO

LI 90R 0 60.7 62.3 2.7 -1.2 . 95 15C TBARING STRBNGTH, STANDARD. THWI NG-ELMBND0RF ( W. AIR CLAMP)

L2 21 60.8 65.3 5.2 .6 1.11 1 SV TEARING STRENGTH. STANDARD, THWI NG-ELMEND0RF( SCALE TO 10 0) X2

LI 9 5 0 60.8 61.2 1 .9 -1.9 1.09 1 5C TEARING STRENGTH, STANDARD, THWI NG- BLMBND0RP ( W. AIR CLAMP)

L376 0 60.9 58.9 .2 -3.3 1.31 1 5T TBARING STRENGTH, STANDARD, THWI NO- EL MEND0RFC SCALE TO 100)

L352 0 61 .

62.1 2.7 -1 .5 1.03 15C TBARING STRBNGTH, STANDARD. THWI NG-BLMEND0RF ( W. AIR CLAMP)

L2 2 5 0 61.1 64.9 5.0 .1 .68 15T TBARING STRBNGTH. STANDARD, THW ING- ELMBND0RF( SCALE TO 100

L2 5 5 61.5 61.3 2.4 -2.3 1.02 1 5 V TEARING STRBNGTH. STANDARD, THWING- ELMBND0RF( SCALE TO 100 )X2

L2 8 8 0 61.6 63.6 4.3 -1 . 1 .98 1 50 TBARING STRENGTH, STANDARD. THWING- EL MEND0RF. AIR CLAMP, DIGITL

L299 0 62. 3 64.4 5.3 -1.1 .95 1 5T TBARING STRBNGTH. STANDARD. THWINO-BLMEND0RP( SCALE TO 100)

L2 59 0 62.4 60.9 2.6 -3.4 .71 15T TEARING STRBNGTH. STANDARD. THWING- BLMEND0RP( SCALE TO 100)

LI 2 4 0 62.5 62.5 3.9 -2.5 .94 1ST TBARING STRENGTH, STANDARD, THWI NG— BL WBND0RF( SCALE TO 100)

L562 * 62.7 78.6 17.0 7.0 3. 27 1ST TBARING STRBNGTH. STANDARD. THW I NG- BL *BND0RF( SCALB TO 100)

LI 07 0 62.7 65.9 6.7 -.6 .95 15T TBARING STRENGTH, STANDARD. THWING-BL «END0RF< SCALE TO 100

L382 0 63. 1 66.3 7.3 -.7 .93 1ST TBARING STRENGTH, STANDARD. THWING-BLMBND0RP( SCALE TO 100

LI 50 0 63.7 63.2 5.2 -3.0 1.05 1ST TEARING STRENGTH, STANDARD. THWI NG-EL*BND0RF< SCALE TO 100

L233 0 64. 5 67.5 9.1 -1.1 1.07 1ST TBARING STRBNGTH. STANDARD, THWING-ELMBND0RF< SCALE TO 100) L250L 64.7 77.0 16.8 4.4 .88 1 5 H TBARING STRENGTH. STANDARD. LH0MARGY, 20 C, 65% RH L554 * 65.7 65.5 8.3 -3.2 .80 15C TBARING STRENGTH. STANDARD. THWI NG- BLWEND0 RF ( W. AIR CLAMP)

L442 * 65.8 67.2 9.7 -2.3 1.16 15R TEARING STRBNGTH. STANDARD. THWING- EL MBND0RF. DIGITAL READOUT

LI 51 X 69. 9 73.7 17.4 -1.7 1.01 15C TBARING STRENGTH, STANDARD, THWI NG-BLMBNDO RF ( W. AIR CLAMP)

L264 * 70.4 91.7 32.1 8.7 2.59 15T TBARING STRBNGTH, STANDARD. THWING-BL MBNDORP! SCALE T0 100)

GlfEANS : 58. 2 60.6 1.00 95% 1ELLIPSB: o o 3.6 WITH GAMMA - 53 DEGREES

18
MILLINEHT0N

480

500

520

540

560

580

600

620

640

660

680

700

720

TEARING STRENGTH , DEEP CUTOUT

SAMPLE Ell = 58.2 GRAMS SAMPLE E17 = 60.8 GRAMS

SAMPLE Ell = 570 M I LL I NEWTON SAMPLE E17 = 596 MILLINEWT0N

460 480 500 520 540 560 580 600 620 640 660 680

MILLINEWT0N

19
REPORT NO. 52S TAPPI COLLABORATIVE REFERENCE PROGRAM MARCH 197B ANALYSIS T17-1 TABLE l TEARING STRBNGTH, GRAMS

TAPPI STANDARD T414 TS-65. THWING-BLMBNDORF WITHOUT DEEP CUTOUT IS STANDARD FOR THIS ANALYSIS

SAMPLE KRAFT BNVELOPB SAMPLE BROWN KRAFT TBST D. • 15 LAB E63 75 GRAMS PBR SQUARE METER E21 74 GRAMS PER SQUARB METER

CODE MEAN DEV N.DBV SDR R. SDR MEAN DBV N.DBV SDR R. SDR VAR F LAB

LI 22 78.

1 .2 .35 3.7 1.50 64.7 .0 .01 2.5 .99 17N 0 LI 22

LI A 8 74.9 -2.4 -.70 2.4 .97 66.9 2.2 .83 2.4 .95 17N 0 LI 48

Li 7 AN 77.3 -.0 -.01 3.7 1.51 64.0 -.7 -.26 3.4 1.35 17N 0 L174N

L231 77.9 .6 .16 2.9 1.18 64.5 -.2 -.06 2.7 1.07 17N 0 L231

L2 3 A 81.6 4.2 1 .21 1.4 . 56 66.8 2.1 .78 2.6 1.03 17N 0 L234

L2 6 7 83.2 5.8 1.67 3.4 1.41 68.5 3.8 1.42 4. 0 1 .58 17N 0 L267

L269 80.3 2.9 .83 1.8 .72 65.7 1.0 .38 1.2 .46 17N 0 L269

L3 01 A 75.6 -1.8 -.51 2.8 1.16 65.5 . 8 .31 1.9 .75 17N 0 L301 A L301 B 71 .0 -6.4 -1.82 1.8 .74 58.5 -6.2 -2.28 2.1 .84 17N 0 L301B

L3 0 8 80.2 2.8 .81 2.0 .82 66.4 1.7 .63 3.4 1.37 17N 0 L308

L326 72.7 -4.7 -1.35 2.8 1.17 60.5 -4.2 -1.54 2.0 .81 1 7N 0 L326

L339 66.2 -11.2 -3.20 2.8 1.14 54.5 -10.2 -3.78 1.8 .72 17N * L339

L366 75.2 -2.2 -.62 1.8 .75 63.2 -1.5 -.55 2.0 .79 17N 6 L366

L372 77.4 -.0 -.00 1.2 .51 65.6 .9 .33 2.5 1 . 01 17N 0 L372

GR. MEAN - 77.4 GRAMS GRAND MEAN - 64.7 GRAMS TBST DETERMINATIONS - 15

SD MEANS - 3.5 GRAMS SD 3F MBANS - 2.7 GRAMS 13 LABS IN GRAND MBANS AVERAGE SDR CM GRAMS AVERAGE SDR - 2.5 GRAMS

GR. MEAN - 758.8 MI LLI NEWTON GRAND MEAN - 634.5 MILLINEWTON TOTAL NUMBER OF LABORATORIES REPORTING - 14

Best Values: E63 78 + 6 grams

E21 65 + i> grams

Please see the diagram on the inside of the back

cover of this report which shows how to distinguish

between an Elmendorf tear tester with DEEP CUTOUT

The following laboratories were omitted from the grand means because of extreme test results: 339.

and an older model tester with NOT CUTOUT

REPORT NO. 52 S TAPPI COLLABORATIVE REFERENCE PROGRAM MARCH 1978 ANALYSIS T17-1 TABLE 2 TEARING STRBNGTH. GRAMS

TAPPI STANDARD T414 TS-65. THWING-ELMBNDORF WITHOUT DEBP CUTOUT IS STANDARD FOR THIS ANALYSIS

LAB MBANS caORDINATES AVG C0DE F B63 E21 MAJOR MINOR R. SDR VAR PROPERTY- --TEST INSTRUMENT---CONDITIONS

L339 * 66.2 54.5 -15.1 -1.6 .93 17N TEARING STRBNGTH. NO CUT OUT. THWI NG-EL if BNDORP

L301 B 0 71.0 58.5 -8.8 -1.2 . 79 1 7 N TBARINQ STRBNGTH, NO CUT OUT. THWI NG- EL * BN DO RP L326 0 72.7 60.5 -6.3 -.6 .99 17N TBARING STRBNGTH, NO CUT OUT, THWI NG-BLMBNDORF

LI 4 8 0 74.9 66.9 -•6 3.2 .96 1 7 N TEARING STRBNGTH, NO CUT OUT, THWI NG- BLM BNDORP

L366 0 75.2 63. 2 -2. 6 • 1 .77 17N TBARING STRBNGTH, NO CUT OUT. THWI NG- ELMENDORF

L3 01 A 0 75. 6 65.5 -.9 1.7 .96 1 7 N TEARING STRBNGTH, NO CUT OUT. THWING-ELMENDORF

LI 74N 0 77.3 64. 0 -.4 -.5 1.43 17N TBARING STRENGTH, NO CUT OUT. THWI NG- BLM BNDORP

L372 0 77.4 65.6 • 5 .7 .76 17N TEARING STRENGTH. NO CUT OUT. THWI NG- ELM BNDORP

L231 a 77.9 64.5 . 4 -.5 1.13 1 7 N tearing STRBNGTH, N0 CUT OUT. THWI NG-BLMBNDORF

LI 22 a 78.6 64.7 1 .0 -.7 1.25 1 7N tearing STRBNGTH. NO CUT OUT. THWI NG- ELMENDORF

L3C8 a 80.2 66.4 3.3 -.3 1.10 17N TEARING STRBNGTH, NO CUT OUT. THWI NG-ELMENDORF

L2 6 9 a 80. 3 65.7 2.9 -.9 .59 17N TBARING STRBNGTH, NO CUT OUT. THWI NG-BLMENDORF

L234 a 81.6 66.8 4.6 -.8 .80 17N TEARING STRBNGTH. NO CUT OUT. THWI NG-BLMEND0RP

L267 a 83. 2 68.5 7.0 -.4 1 • 49 17N TEARING STRENGTH. NO CUT OUT. THWI NG-ELMENDORP

GMEANS: 77.4 64.7 1.00 95% ELLIPSE: 12.5 3.7 WITH GAMMA - 36 DEGRBES

20
MILLINE

WT

0

N

520

540

560

580

600

620

640

660

680

700

720

740

760

TEARING STRENGTH, N0 CUT0UT

CE

(O

SAMPLE E63 = 77.4 GRAMS SAMPLE E21 = 64.7 GRAMS

SAMPLE E63 = 759 MILLINEWT0N SAMPLE E21 = 634 MILLINEHT0N

CD

[>

M-

(\l o

o

rCD

CD

CO

CD

M-CD

CM

CD

O

CD

CO

LD

CDLD

M-LD

64 66 68 70 72 74 76 78 80 82 84 86 88 90

+.X.« N0T IN GRAND MEANS

. CM^ ANALYSIS T17-1

Q_

51

CE

CO

O

O O

O

O

O

o

-©- xr o

o

o

o

SAMPLE E63

GRAMS

i

1 1 r 1 1 1 1 1 1 1 1

1 640 660 680 7Q0 720 740 760 780 800 820 840 860 880

MILLINEWT0N

21
REPORT NO. 52

TAPPI COLLABORATIVE REFERENCE PROGRAM MARC a 1978 ANALYSIS T19-1 TABLE 1 TENSILB BREAKING STRENGTH, KILONBWTONS PER METBR - PACKAGING PAPER

TAPPI STANDARDS T404 OS-76 AND T494 0S-70. TENSILE BRBAKING STRENGTH, PBNDULUM AND CRE TYPES

SAMPLE KRAPT ENVELOPE SAMPLE KRAFT test D.-. 20 LAB E63 75 GRAMS PER SQUARE METER E66 83 GRAMS PER SQUARE METER

C0DE MEAN DEV N.DSV SDR R. SDR MEAN DBV N. DBV SDR R. SDR VAR F LAB

LI 07 3.76 -.16 -.87 .25 1.46 3 • 61 -.13 -.53 .32 1 .01 19A 0 LI 07

LI 2 2 3.69 -.22 -1.19 .14 .83 3.46 -.28 -1.19 .35 1.11 19A 6 LI 22

Li 26 3.78 -.1* -.76 .16 .95 3.57 -.16 -.69 .23 .72 19A © Li 26

LI 51 3.73 -.19 -1.02 .18 1.07 3* 46 -.28 -1.19 .41 1.28 19A 0 LI 51

Li 53 4.13 .21 1.09 .16 .92 3. 80 .06 .25 .32 1.01 19P 0 Li 53

Li 57A 3.90 -.02 -.10 .18 1 . 06 3.64 -.10 -.41 .31 .99 19P 0 L157A

Li 571 3. 82 -.10 -.53 .19 1.12 3.66 -.08 -.32 .32 1.01 19A 0 Li 571

Li 6 7 4.38 .46 2.44 .24 1.43 4. 34 .60 2.55 .43 1.37 19G * Li 67

Li 74 3.78 -.14 -.74 .14 .80 3.63 -.10 -.44 .53 1.67 19A 0 Li 74

LI 821 36.70 32.78 173.42 1.32 7.72 33.68 29.95 127.06 1.83 5. 81 1 9D 0 Li 821

Li 82L 3.82 -.10 -.53 .17 .99 3.47 -.27 -1.16 .24 .77 1ST 0 Li 82L

L2 0 7 3.82 -.10 -.51 .13 .79 3.67 -.07 -.30 .27 .84 19A 0 L207 L217P 3.95 .03 .17 .13 .77 3.50 -.24 -1.00 .33 1.05 19P 0 L217P

L2 2 4 4.01 .09 .48 .20 1.19 3. 85 .11 .46 .34 1.08 19A 6 L224

L2 2 5 4.08 .16 .65 .26 1.53 4.04 .31 1.30 .50 1.60 19P 0 L225 L234L 4.10 .18 .94 .13 .75 3. 84 .10 .42 .32 1.01 1 9P 0 L234L

L237A 3.96 .04 .22 .15 . 88 3.69 -.04 -.19 .33 1.05 19Q 0 L237A

L237B 4.03 .11 .61 .24 1.43 3.93 .19 . 83 .40 1.28 19A 0 L237B

L2 3 8A 41.12 37.21 196.81 1 .45 8. 50 37.97 34.23 145.24 3.50 11.08 19T § L238A

L2A3 3.64 -.27 -1.45 .20 1.18 3.40 -.34 -1.45 .28 .89 1 9 A 0 L243 L257A 4.03 .11 .60 .12 . 69 3.85 .11 .46 .27 .85 19P 0 L257A L257B 3.90 -.02 -.11 .18 1.06 3.65 -.09 -.37 .24 .78 19P 0 L257R

L257C 4.04 .12 .65 .14 . 85 3.85 .11 . 46 .28 .90 19P 0 L257C

L264A 4.84 .92 4.88 .47 2.75 4.46 .72 3.05 .95 3.02 1 9 A 0 L264A

L264P 41.60 37.68 199.35 1.43 8. 40 39.43 35.69 151.45 3.05 9.65 19P * L264P

L265 3. 85 -.07 -.35 .19 1.11 3.66 -.08 -.35 .37 1.16 19A 0 L265

L267 3.77 -.15 -.80 .16 .93 3.67 -.07 -.29 .27 .87 1 9 A 0 L267

L268A 3.83 -.09 -.46 .10 .57 3.87 .13 .55 .22 .70 19A 0 L268A

L268P 4.08 .16 .83 .09 . 54 3.88 .14 . 61 .17 .54 19P 0 L268P

L273 4.02 .10 .53 .19 1.09 NG DATA RBP8RTBD FOR SAMPLE B66 1 9P If L273

L280 3. 85 -.07 -.35 .15 . 88 3.45 -.29 -1.24 .37 1.18 19G 0 L2 80 L281 3.91 -.01 -.07 .15 .90 3.70 -.04 -.16 .26 .82 1 9G 0 L281 L312 4.10 .18 .98 .34 1.97 4.15 .42 1.77 .26 .84 19D 0 L312

L31 8 3.48 -.44 -2.31 .19 1.10 3.42 -.32 -1.36 .29 .93 19G « L31 8 L32 4 3.72 -.20 -1.05 .18 1.05 3.64 -.09 -.40 .29 .93 19A 0 L324

L334 4.07 .16 .82 .17 . 98 3.90 . 1 6 .69 .26 .83 19P 0 L334

L3 3 6 3.80 -.12 -.65 .11 .64 3.72 -.02 -.09 .21 .68 19G 0 L336

L356 4.13 .21 1.13 .23 1.34 3.97 .23 .99 .42 1.33 1 9P 0 L356

L561 4.07 .15 .81 .12 .70 3.66 -.08 -.35 .47 1 .50 19P 0 L561

L5 6 2 4.08 .16 . 83 .27 1 . 56 4.04 .30 1.26 .23 .74 19P 0 L562

L565 4.13 .21 1 . 09 .19 1.11 4.07 .33 1.42 .16 .51 19T 0 L565

L5 6 8 3.82 -.10 -.51 .17 .98 3.63 -.11 -.46 .33 1.06 19P 0 L568

L575 3.78 -.14 -.74 .14 . 82 3.58 -.1 6 -.68 .30 .95 19D 0 L575

L576 3.91 -.01 -.03 .15 . 88 N0 DATA RBP0RTBD FAR SAMPLE E66 1 9 A St L576

L580 3.94 .02 .11 .16 . 92 3. 82 • 08 .35 • 26 .84 190 0 L580

L5 8i 4.02 .10 .53 .13 .76 3.50 -.24 -1.01 .27 .84 1 9 A » L5 81 L582 3.61 -.31 -1.62 .16 .96 3. 51 -.23 -.96 • 24 .78 19A 0 L582

L604 3.89 -.03 -.13 .18 1 . 03 3.70 -.04 -.15 • 40 1 .26 19P 0 L604

L606 3.94 .02 .11 .17 1 . 00 3. 80 • 06 .24 • 42 1.32 1 9P 0 L606

L6 07 4.43 .51 2.70 .23 1 . 34 4.45 .71 3.01 .30 .94 19A * L607

L61 0 3.70 -.22 -1.14 .12 . 69 3.53 -.21 -.89 .40 1.28 1 9 A 0 L610

GR. MEAN - 3.92 KIL0NBWT0N/M GRAND MBAN - 3.74 KIL0NEMT0N/M TBST DETERMINATIONS - 20

SD MEANS - .19 KIL0NEWT0N/M SD 6F MEANS * .24 KIL0NBWT0N/M 45 LABS IN GRAND MBANS AVERAGB SDR * .17 KILONBWTON/M AVER AGB SDR - .32 KILONBWTON/M

GR. MEAN - 22.38 LB/INCH GRAND MBAN • 21.35 LB/INCH

L250I 3.28 -•64 -3.39 .20 1.16 3.13 -.61 -2.59 .33 1.05 19L L250I

L251 3.17 -.75 — 3 • 97 .23 1 . 33 3.29 -.45 -1 .92 • 22 .71 191 L251 TOTAL NUMBER OF LABORATORIES REPORTING * S3

Best Values: E63 3.8 + 0.3 kilonewton per meter

E66 3.5 + 0.5 kilonewton per meter

The following laboratories were omitted from the grand means because of extreme test results: 1821

238A , 264A 264P.

22
REPORT NO. 52S TAPPI COLLABORATIVE REFERENCE PROGRAM MARCH 1978 ANALYSIS T19-1 TABLE 2 TBNSILE BREAKING STRENGTH, KILONEWTONS PER MBTER - PACKAGING PAPER

TAPPI STANDARDS T404 OS-76 AND T494 0S-7O, TENSILB BREAKING STRENGTH, PENDULUM AND CRE TYPES

LAB MEANS C08RDINATBS AVG

CODE F B63 E66 MAJ0R MINOR R. SDR VAR PROPERTY--— TEST INSTRUMENT———CONDITIONS

1.2 51 3.17 3.29 -.82 .32 1.02 191 TBNSILE STRBNGTH, PACKAGING PAPER, CRB. 20C, 65% RH L250I 3.28 3.13 -.87 .13 1.10 19L TBNSILB STRBNGTH, PACKAGING PAPER, CRB, 20 C , 65% 81 L31 a » 3.48 3.42 -.52 .15 1.02 1 9G TBNSILE STRENGTH, PACKAGING PAPBR, L0AD CBLL ( CRE ) L582 0 3.61 3.51 -.37 .10 .87 1 9 A TENSILE STRENGTH, PACKAGING PAPER. L0AD CBLL < CRE ) L243 0 3.64 3.40 -.44 .01 1.04 19A TBNSILB STRBNGTH, PACKAGING PAPER. L0AD CELL ( CRB )

LI 22 0 3.69 3.46 -. 36 .01 .97 1 9 A TBNSILE STRENGTH, PACKAGING PAPER. L0AD CBLL ( CRE ) L6 1 0 0 3.70 3.53 -.30 .04 .98 1 9 A TENSILE STRBNGTH, PACKAGING PAPER, L0AD CBLL ( CRE ) L32 4 0 3.72 3.64 -.20 .10 .99 1 9 A TBNSILB STRBNGTH, PACKAGING PAPER. L0AD CBLL (CRE)

LI 51 0 3.73 3.46 -.34 -.02 1.18 1 9 A TBNSILE STRBNGTH, PACKAGING PAPER, L0AD CBLL < CRE ) LI 07 0 3.76 3.61 -.20 .05 1.23 19A TENSILB STRBNGTH. PACKAGING PAPER. L0AD CBLL ( CRE ) L267 0 3.77 3.67 -.15 .08 .90 19A TENSILB STRENGTH, PACKAGING PAPER. L0AD CBLL ( CRE ) LI 2 6 0 3.78 3.57 -.*2 .01 .83 19A TBNSILE STRBNGTH, PACKAGING PAPBR, L0AD CBLL ( CRE ) LI 74 0 3.78 3.63 -.17 .05 1.23 19A TBNSILE STRBNGTH, PACKAGING PAPBR. L0AD CELL ( CRE ) L575 0 3.78 3.58 -.21 .01 .88 19D TENSILE STRBNGTH. PACKAGING PAPER. L0AD CBLL ( CRE ) L336 0 3.80 3.72 -.09 .08 .66 1 9G TBNSILE STRBNGTH, PACKAGING PAPER, L0AD CBLL ( CRE )

LI 571 0 3.82 3.66 -.12 .03 1.07 1 9 A TBNSILE STRBNGTH, PACKAGING PAPER. L0AD CBLL ( CRE ) LI B2L 0 3.82 3.47 -.28 -.09 .88 19T TENSILE STRENGTH, PACKAGING PAPER, PENDULUM TESTER

L5S8 0 3.82 3.63 -.14 .01 1.02 1 9 P TENSILE STRBNGTH, PACKAGING PAPER, PENDULUM TESTER

L2 07 0 3.82 3.67 -.11 .03 .82 1 9A TENSILB STRBNGTH. PACKAGING PAPBR, L0AD CBLL (CRE ) L268A 0 3.83 3. 87 .05 .15 .63 t 9 A TBNSILB STRENGTH, PACKAGING PAPER, L0AD CBLL ( CRB ) L280 0 3.85 3.45 -.27 -.13 1.03 19G TENSILB STRBNGTH, PACKAGING PAPER, L0AD CBLL ( CRE ) L265 0 3.85 3.66 -.u .00 1.13 1 9 A TENSILE STRBNGTH, PACKAGING PAPBR, L0AD CBLL ( CRE ) L604 0 3.89 3.70 -.04 -.00 1.15 1 9 P TENSILB STRENGTH, PACKAGING PAPER, PENDULUM TESTER

L2 57 B 0 3.90 3. 65 -.08 -.04 .92 1 9 P TBNSILE STRBNGTH, PACKAGING PAPER. PENDULUM TESTER

LI 57A 0 3.90 3.64 -.09 -.04 1.03 19P TBNSILE STRENGTH, PACKAGING PAPER, PENDULUM TESTER

L281 0 3.91 3. 70 a• o 4

> • O 4 . 86 19G TBNSILE STRBNGTH, PACKAGING PAPER, L0AD CBLL ( CRE > L576 M 3.91 . 88 1 9 A TBNSILE STRENGTH, PACKAGING PAPBR. LOAD CBLL ( CRE ) L606 0 3.94 3. 80 .06 .02 1.16 1 9 P TBNSILE STRBNGTH, PACKAGING PAPER, PENDULUM TBSTER

L580 0 3.94 3. 82 .08 .03 . 88 190 TBNSILB STRBNGTH. PACKAGING PAPER, L0AD CELL ( CRE > L217P 0 3.95 3.50 -.17 -.17 .91 19P TBNSILB STRBNGTH, PACKAGING PAPER, PENDULUM TESTBR L237A 0 3.96 3.69 -.01 -.06 .96 190 TBNSILB STRBNGTH, PACKAGING PAPER, PBNDULUM TESTER

L2 2 4 0 4.01 3. 85 -.00 1.13 19A TBNSILB STRBNGTH, PACKAGING PAPER. L0AD CELL ( CRE ) L27 3 If 4.02 1.09 1 9 P TENSILB STRBNGTH. PACKAGING PAPER. PBNDULUM TESTER

L581 * 4.02 3.50 -.13 -.22 .80 l 9 A TBNSILE STRBNGTH, PACKAGING PAPER, LOAD CELL ( CRE ) L2 57A 0 4.C3 3.85 .16 -.02 .77 1 9 P TBNSILB STRENGTH, PACKAGING PAPER, PBNDULUM TBSTER

L2 3 7B 0 4.03 3.93 .22 .03 1.35 19A TENSILE STRBNGTH, PACKAGING PAPBR, L0AD CBLL ( CRE ) L2S7C 0 4.04 3.85 .16 -.03 .88 1 9 P TENSILB STRBNGTH, PACKAGING PAPER, PENDULUM TESTER

L561 0 4.07 3.66 .03 -.17 1.10 1 9 P TENSILB STRENGTH. PACKAGING PAPER, PBNDULUM TBSTER

L334 0 4.07 3.90 .22 -.02 .90 1 9 P TBNSILB STRENGTH, PACKAGING PAPER. PBNDULUM TESTER

L268P 0 4.08 3.88 .21 -.04 .54 19P TBNSILB STRBNGTH. PACKAGING PAPER. PBNDULUM TESTER

L562 0 4.08 4.04 . 33 . 06 1.15 19P TBNSILB STRENGTH, PACKAGING PAPER. PBNDULUM TESTER

L225 0 4.08 4.04 .34 .06 1.57 1 9 P TBNSILE STRBNGTH. PACKAGING PAPBR, PBNDULUM TESTER L234L 0 4.10 3.84 .19 -.08 . 88 1 9 P TENSILB STRBNGTH, PACKAGING PAPER, PBNDULUM TESTER

L3 1 2 0 4.10 4.15 .44 .11 1.40 19D TBNSILB STRENGTH, PACKAGING PAPER, L0AD CBLL ( CRB ) LI 53 0 4.13 3.80 .17 -.13 .96 1 9 P TENSILB STRBNGTH, PACKAGING PAPER, PBNDULUM TESTER

L555 0 4.13 4.07 .39 .04 .01 19T TBNSILB STRBNGTH. PACKAGING PAPER, PBNDULUM TESTBR

L3 56 0 4.13 3.97 .31 -.03 1.34 19P TEN SI LB STRENGTH. PACKAGING PAPER, PENDULUM TBSTER

LI 67 * 4.38 4.34 ,76 .00 1.40 19G TBNSILB STRBNGTH, PACKAGING PAPER, L0AD CBLL ( CRB ) L607 * 4.43 4.45 .87 .03 1.14 1 9 A TENSILB STRBNGTH, PACKAGING PAPER, L0AD CBLL ( CRB ) L264A 0 4.84 4.46 1.13 -.29 2.89 1 9 A TENSILE STRBNGTH, PACKAGING PAPBR, L0AD CELL ( CRE )

LI 82 I 0 36.70 33.68 43.74 -7.62 6.76 1 9D TENSILB STRBNGTH, PACKAGING PAPER. L0AD CBLL ( CRE ) L238A 0 41.12 37.97 49.84 -8.50 9.79 19T TBNSILB STRENGTH, PACKAGING PAPER, PENDULUM TESTER L264P 0 41.60 39.43 51.29 -7.98 9.03 1 9 P TBNSILB STRBNGTH, PACKAGING PAPER, PBNDULUM TESTBR

GMBANS : 3.92 3.74 1.00 95% BLLIPSE; .75 .20 WITH GAMMA a 52 DBGREES

23
1

TENSILE STRENGTH, PflCKRGI NG PRPERS

CD

CM

LD

C\1

M-

(M

CO

CM

CM

CM

(_) CM \

DO O

_J CM

CD

00

l>

CD

SAMPLE E63

SAMPLE E63

3.92 KIL0NEWT0N/M SAMPLE E66 = 3.74

22.4 LB/INCH SAMPLE E66 = 21-3

K I L0NEWT0N/M

LB/INCH

KIL 0NEWT0N/M

IB HI —

!

i

1 1 [—

20 21 22 23 24 25

LB/INCH

26 27

24
REPOST NO. 52 S TAPPI COLLABORATIVE REFERENCE PROGRAM MARCH 1978 ANALYSIS T20-1 TABLE 1 TENSILE BRBAKING STRBNGTH, KILONEWTONS PER METER

TAPPI STANDARD T494 OS-70, TENSILE BREAKING PROPERTIES OF PAPER 4 PAPBRBOARD (CONSTANT RATE OF ELONGATION)

SAMPLE PRINTING SAMPLE PRINTING TEST D. - 20 LAB J07 85 GRAMS PER ;SQUARB METER J05 102 GRAMS PER SQUARE METER

C0DB MEAN DEV N.DEV SDR R. SDR MEAN DEV N. DEV SDR R. SDR VAR F LAB

LI 0 0 6.17 -.12 -.34 .20 .57 5.12 -.27 -.86 .22 .92 20E 0 LI 00

LI 05 6.17 -.12 -.33 .46 1.29 4.77 -.61 -1.97 .31 1.32 2 0 A * LI 05

LI 1 5 6.35 . 06 .17 .20 .55 5.30 -.08 -.26 .14 .59 2 OD 0 LI 15

LI 18 6. 31 .02 .05 .18 . 49 5.33 -.05 -.16 .16 . 66 2 0 A 0 LI 18

LI 2 2 6.06 -.23 -.64 .41 1.14 5. 30 -.08 -i27 .16 .70 20A 0 LI 22

LI 2 AC 6.05 -.24 -.67 .35 .98 5. 33 -.05 -.15 .16 .69 2 0 A 0 LI 24C

LI 25 6.59 .30 .82 .40 1.12 5.61 .23 .73 .28 1.17 2 OC 0 LI 25

LI 31 6.32 . 03 .09 .34 .95 5.44 .05 .18 .26 1.11 2 0E 0 LI 31

LI A3 7 . 0 A .75 2.07 .35 .98 5.90 .51 1.65 .27 1.16 2 OE 0 LI 43

LI A8 6.2A -.05 -.13 .40 1.12 5.35 -.04 -.11 .21 .91 2 0 A 0 LI 48

LI 59 5.63 -.66 -1.83 .54 1.51 4. 84 -.54 -1.74 .25 1 .08 20 A 0 LI 59

LI 63 6.30 .01 .02 .37 1.05 5.40 .02 .07 .20 . 85 20D 0 LI 63

LI 67 6.76 .47 1.30 .56 1.57 5.97 . 59 1.89 .19 .82 20G 0 LI 67

LI 85 6.07 -.22 -.60 .33 .92 5.24 -.14 -.45 .23 .98 2 OC 0 LI 85

LI 90 R 5.77 -.52 -1.42 .56 1 . 57 5.07 -i31 -1.01 .19 .82 20 A 0 LI 90R

LI 9 A 6.17 -.12 -.34 .24 . 67 5.28 -.10 -.32 .14 .62 2 OA 0 LI 94

L2 0 6 6.33 .04 .10 .41 1.15 5.53 .15 .47 .26 1 .11 20 A 0 L206

L2 2 3 B 6.A9 .20 .55 .19 .52 5.50 .12 .39 .14 .61 2 0 A 0 L223B

L2 2 6C 6.52 .23 .62 .58 1.63 6.33 . 95 3.05 .67 2.86 2 OC X L226C

L2 3 0 3 • 0 A -3.25 -9.00 .09 . 25 2.56 -2.82 -9.07 .10 .44 200 ft L230

L2A3 6.08 -.21 -.58 .40 1.12 5.25 -.13 -.41 .22 .94 20 A 0 L243 L255 6.54 .25 .68 .21 . 58 5. 49 .10 .33 .21 . 89 2 0 A 0 L255

L26 0 6.75 .46 1.27 .43 1.22 5.78 .39 1.27 .28 1.19 20 A 0 L260

L261 6.29 .00 .01 .27 .77 5.44 .06 .20 .40 1.70 20 A 0 L261 L278 5.89 -.40 -1.10 .31 . 88 4.92 -.47 -1.50 .24 1.03 20A 0 L278

L291 6.84 .55 1.51 .63 1.78 5.32 -. 06 -.19 .49 2.10 2 0 A * L291

L3 0 9 6.61 .32 .89 .31 . 88 5.77 .39 1.26 .28 1 .20 2 OE 0 L309 L315 6.29 -.00 -.00 .28 .79 5.25 -.13 -.41 .17 .73 2 0 A 0 L315

L31 8 5.88 -.41 -1.14 .32 .90 4.85 -.53 -1.72 .25 1.05 2 OG 0 L31 8 L328 6.78 .49 1.35 .21 .60 5.68 .30 .97 .23 .96 20 A 0 L328

L331 6.58 .29 .80 .63 1.78 5. 80 .42 1.36 .29 1.25 2 OA 0 L331 L333 6.07 -.22 -.62 .39 1.11 5. 15 -.24 -.76 .16 .67 2 0 A 0 L333

L3 A A 6.42 .13 .36 .51 1.43 5.63 .25 .81 .24 1 .03 20 A 0 L344

L360 6.20 -.10 -.26 .25 .70 5.24 -.14 = . 45 .29 1.25 2 OB 0 L360

L372 6.15 -.14 -.39 .40 1.13 5.16 -.22 -.71 .34 1 .44 20 A 0 L372

L3 7 8 6.12 -.17 -.46 .33 .93 5.29 -.09 -.30 .16 .67 2 0 A 0 L378

L390 .63 -5.66 -15.65 .04 .11 .56 -4.82 -15.51 .02 .10 20A 0 L390

LA A 2 5.94 -.35 - .98 .21 . 58 5.15 -i23 -.75 .24 1.01 20 G 0 L442

L531 7.05 .76 2.11 .42 1.17 5.94 .55 1.78 .36 1 .52 20A 0 L531 L557 5.39 -.90 -2.48 .53 1.78 4.93 -.45 -1.45 .22 .93 2 OC * L557

L5 5 9 6.41 .12 .34 .21 . 60 5.35 -.03 -.11 .21 .90 20C 0 L559

L56 0 5.56 -.73 -2.01 .55 1 . 54 5.19 -.19 -.61 .24 1.03 20C » L560

L5 61 6.37 . 08 .21 .46 1 . 29 5.27 -.11 -.35 .40 1 .70 20A 0 L561

L5 6 7 6.69 .40 1.10 .71 2.00 6.11 .73 2.34 .20 .84 20 A « L567

L57A 6.17 -.12 -.33 .65 1.83 5. 43 .05 .15 .25 1 .06 20A 0 L574

L5 75 6. 33 .04 . 1 1 .24 . 68 5.44 . 06 .18 .24 1 . 03 20D 0 L575

L592 6.55 .26 .72 .41 1.16 5.69 .31 1.00 .22 . 94 20A 0 L592

GR. MEAN - 6.29 KILONEWTON/M GRAND MEAN - 5.38 KILONEWTON/M TEST DETERMINATIONS - 20

SD MEANS • .36 KIL0NEWT0N/M SD 0P MEANS - .31 KILONEWTON/M 44 LABS IN GRAND MEANS

AVERAGE SDR - .36 KILONBWTON/M AVERAGE SDR - .23 KILONEWTON/M

GR. MBAN -21.214 LB/15 MM GRAND MEAN * 18.151 LB/15 MM

LI 39 6.16 -.13 -.37 .27 . 76 5.24 -.14 -.46 .19 .81 20H LI 39

L231 6.61 .32 .90 .26 .74 5.48 .10 • 32 .21 .87 2 OH L231 L250I 5.29 -1.00 -2.77 .17 .48 4.46 -.92 -2.96 .15 .65 20L L250I

L2 51 44.17 37. 88 104.74 5.13 14.44 37.66 32.28 1 03.87 3.43 14.62 200 L251 TOTAL NUMBER OF LABORATORIES REPORTING * 51

Best Values: J07 6.2 + 0.5 kilonewton per meter

J05 5.3 + 0.5 kilonewton per meter

Data from the following laboratories appear to be

off by a multiplicative factor: 230, 390.

25
i

REPORT NO. 52S TAPPI COLLABORATIVE REFERENCE PROGRAM MARCH 1978 ANALYSIS T20-1 TABLE 2 TENSILE BREAKING STRENGTH. KILONBWTONS PER METER

TAPPI STANDARD T494 OS-70. TENSILB BREAKING PROPERTIES OF PAPER A P APBRBOARD (CONSTANT RATE OF ELONGATION)

LAB MBANS COORDINATES AVG

C0DE F J07 J05 MAJ0R MINOR R. SDR VAR PROPERTY-- —TEST INSTRUMENT--—CONDITIONS

L390 * .63 .55 -7. 43 08 .10 20 A TENSILE STRBNGTH. PRIMARILY PRINTING PAPERS. LOAD CELL ( CHE > L230 * 3.04 2.56 -4. 30 -.08 .35 200 TBNSILB STRBNGTH, PRIMARILY PRINTING PAPBRS, LOAD CBLL ( CRE > L250I 5.29 4.46 -1. 36 -.07 .57 20L TENSILB STRBNGTH. PRINTING PAPBR, CRE . 20 C, 65% RH L557 • 5.39 4.93 98 .23 1.36 20C TENSILB STRBNGTH. PRIMARILY PRINTING PAPBRS, LOAD CBLL ( CRE ) L56 0 * 5.56 5.19 -• 68 .32 1.28 20 C TBNSILB STRBNGTH, PRIMARILY PRINTING PAPBRS, LOAD CELL ( CRE )

LI 59 0 5.63 4.84 85 .01 1.30 20 A TBNSILB STRBNGTH, PRIMARILY PRINTING PAPERS, LOAD CELL ( CRE ) L190R 6 5.77 5.07 60 .09 1.20 20 A TENSILE STRBNGTH. PRIMARILY PRINTING PAPBRS. LOAD CBLL ( CRE ) L31 8 0 5.88 4.85 66 -.15 .98 20G TENSILE STRENGTH, PRIMARILY PRINTING PAPERS. LOAD CELL ( CRE > L2 7 8 0 5.89 4.92 60 -.10 .95 20 A TENSILE STRBNGTH. PRIMARILY PRINTING PAPERS, LOAD CBLL < CRE ) L442 0 5.94 5.15 -• 42 .05 .79 20G TBNSILB STRENGTH, PRIMARILY PRINTING PAPERS. LOAD CBLL ( CRB )

Li 24C 0 6.05 5.33 22 .12 .S3 20 A TENSILE STRENGTH, PRIMARILY PRINTING PAPBRS, LOAD CELL ( CRE ) Li 2 2 0 6.06 5.30 23 .08 .92 20 A TBNSILE STRBNGTH, PRIMARILY PRINTING PAPBRS, LOAD CELL ( CRB ) L333 0 6.07 5.1 5 32 -.04 .89 20 A TBNSILB STRENGTH, PRIMARILY PRINTING PAPBRS, LOAD CELL ( CRE ) Li 85 0 6.07 5.24 26 .03 .95 20C TBNSILB STRENGTH, PRIMARILY PRINTING PAPBRS, LOAD CELL ( CRE ) L243 0 6.08 5.25 24 .03 1.03 20 A TENSILB STRENGTH. PRIMARILY PRINTING PAPBRS, LOAD CELL ( CRE)

L3 7 8 0 6.1 2 5.29 19 .03 .80 20 A TBNSILB STRBNGTH. PRIMARILY PRINTING PAPBRS. LOAD CELL ( CRB ) L37 2 0 6.15 5.16 25 -. 08 1.29 20 A TBNSILB STRBNGTH. PRIMARILY PRINTING PAPERS, LOAD CELL ( CRE ) Li 39 6.16 5.24 19 -.02 .78 20 H TENSILB STRBNGTH, PRINTING PAPER, CRE!, SH0RT TEST SPAN

Li 9 4 0 6.17 5.28 16 .00 .64 20 A TBNSILB STRENGTH. PRIMARILY PRINTING PAPBRS, LOAD CBLL ( CRE ) Li 0 0 0 6.17 5.12 -• 26 -.13 .74 20B TBNSILB STRENGTH. PRIMARILY PRINTING PAPERS, LOAD CELL ( CRB )

Li 05 *• 6.17 4.77 48 -.39 1.30 20 A TBNSILE STRENGTH. PRIMARILY PRINTING PAPERS, LOAD CELL ( CRE)

L574 0 6.17 5.43 06 .11 1.44 20 A TBNSILE STRBNGTH, PRIMARILY PRINTING PAPBRS, LOAD CELL ( CRE ) L360 0 6.20 5.24 16 -.05 .98 20 B TBNSILB STRENGTH, PRIMARILY PRINTING PAPBRS, LOAD CBLL ( CRE ) Li 4 8 0 6.24 5.35 06 .00 1.02 20 A TBNSILB STRBNGTH, PRIMARILY PRINTING PAPBRS, LOAD CBLL ( CRE ) L3i 5 0 6.29 5.25 -• 08 -.10 .76 2 0 A TENSILB STRBNGTH, PRIMARILY PRINTING PAPBRS, LOAD CELL ( CRE )

L2 61 0 6.29 5.44 # 04 .05 1.24 20 A TBNSILE STRBNGTH, PRIMARILY PRINTING PAPBRS, LOAD CELL ( CRB ) LI 63 0 6.30 5.4C • 02 .01 .95 20D TENSILE STRBNGTH. PRIMARILY PRINTING PAPERS, LOAD CBLL ( CRE ) Li 18 0 6.31 5.33 02 -.05 .58 20A TBNSILE STRBNGTH, PRIMARILY PRINTING PAPBRS, LOAD CBLL ( CRB ) Li 3i 0 6.32 5.44 • 06 .02 1.03 20B TENSILB STRENGTH. PRIMARILY PRINTING PAPERS, LOAD CBLL ( CRE)

L2 06 0 6.33 5.53 • 12 .09 1.13 20 A TBNSILE STRBNGTH. PRIMARILY PRINTING PAPBRS, LOAD CELL ( CRE ) L575 0 6.33 5.44 07 .02 .86 20 D TBNSILE STRBNGTH, PRIMARILY PRINTING PAPBRS, LOAD CELL ( CRE ) LI 1 5 0 6.35 5.30 01 -.10 .57 2 OD TBNSILB STRBNGTH. PRIMARILY PRINTING PAPBRS, LOAD CELL ( CRE)

L561 0 6.37 5.27 01 — .13 1.50 20 A TBNSILE STRBNGTH, PRIMARILY PRINTING PAPBRS, LOAD CBLL ( CRB ) L55 9 0 6.41 5.35 . 07 -.10 .75 20C TBNSILB STRENGTH. PRIMARILY PRINTING PAPBRS, LOAD CBLL (CRE)

L34 4 0 6.42 5. 63 • 26 .11 1.23 20 A TBNSILB STRBNGTH, PRIMARILY PRINTING PAPERS, LOAD CBLL ( CRB )

L2 2 3B 0 6.49 5.50 # 23 -.04 .57 20 A TBNSILE STRBNGTH, PRIMARILY PRINTING PAPBRS. LOAD CBLL ( CRE ) L226C X 6.52 6.33 . 78 .58 2.25 20C TBNSILB STRBNGTH. PRIMARILY PRINTING PAPBRS. LOAD CBLL ( CRB ) L2 55 0 6.54 5.49 . 26 -.08 . 74 2 OA TBNSILB STRBNGTH, PRIMARILY PRINTING PAPBRS, LOAD CBLL ( CRE ) L5 9 2 0 6.55 5.69 . 40 .07 1.05 20 A TENSILE STRBNGTH, PRIMARILY PRINTING PAPBRS, LOAD CELL ( CRE ) L331 0 6.58 5.80 • 49 .14 1.51 2 OA TBNSILB STRBNGTH, PRIMARILY PRINTING PAPBRS, LOAD CBLL ( CRE )

Li 25 0 6.59 5.61 37 -.01 1.14 20C TBNSILB STRENGTH. PRIMARILY PRINTING PAPBRS, LOAD CELL ( CRE ) L309 0 6.61 5.77 . 50 .10 1.04 20B TBNSILB STRENGTH, PRIMARILY PRINTING PAPBRS, LOAD CBLL ( CRE ) L231 6.61 5.48 • 31 -.13 .81 20 H TBNSILB STRENGTH, PRINTING PAPBR. CRE:, SH0RT TEST SPAN

L567 • 6.69 6.11 • 77 .30 1.42 2 0 A TENSILB STRBNGTH. PRIMARILY PRINTING PAPBRS, LOAD CELL ( CRE > L260 0 6.75 5.78 • 61 .01 1.21 20 A TBNSILE STRENGTH, PRIMARILY PRINTING PAPERS, LOAD CELL ( CRB )

Li 6 7 0 6.76 5.97 74 . 15 1.19 20G TBNSILE STRBNGTH, PRIMARILY PRINTING PAPBRS, LOAD CBLL ( CRE ) L328 0 6.78 5.68 • 57 -.08 .78 20 A TBNSILB STRENGTH. PRIMARILY PRINTING PAPBRS. LOAD CBLL ( CRB ) L291 * 6.84 5.32 • 38 -.40 1.94 20 A TBNSILB STRBNGTH. PRIMARILY PRINTING PAPBRS, LOAD CELL ( CRB > Li 4 3 0 7.04 5.90 • 90 -.08 1.07 20E TBNSILE STRBNGTH. PRIMARILY PRINTING PAPERS, LOAD CBLL ( CRE ) L531 0 7.05 5.94 • 94 -.06 1.35 20 A TBNSILE STRBNGTH. PRIMARILY PRINTING PAPBRS, LOAD CELL ( CRB)

L251 44.1 7 37.66 49. 76 .56 14.53 20U TBNSILE STRENGTH. PRIMARILY PRINTING PAPERS, PBNDULUM TBSTBR

GMEANS: 6.29 5.38 1 .00 95% ELLIPSE: 1. 17 .35 WITH GAMMA - 39 DBGREES

26
KIL0NENT0N/M

TENSILE STRENGTH, CRE TYPE

SAMPLE J07 = 6.29 K I L0NEWT0N/M SAMPLE J05 = 5-38 K I L0NEWT0N/M

SAMPLE J07 = 21.2 LB/15 MM SAMPLE J05 = 18.2 LB/15 MM

KIL0NENT0N/M

\

1 —i 1 1 1 1 1

1 17 18 19 20 21 22 23 24 25

LB/15 MM

27
REPORT NO. 52 S TAPP I COLLABORATIVE REFERENCE PROGRAM MARCH 1978 ANALYSIS T20-2 TABLE 1 TENSILB BREAKING STRENGTH, KILONEWTONS PBR METER

TAPPI STANDARD T404 OS-76. TENSILE BREAKING STRENGTH OP PAPER AND PAPERBOARD ( PENDULUM- TTPB TESTER)

LAB SAMPLEJO 7 PRINTING85 GRAMS PER SQUARB METBR

SAMPLE

JOS PRINTING102 GRAMS PER SQUARE METER TBST D. - 20

C0 DB MEAN DEV N.DBV SDR R. SDR MBAN DBV N. DBV SDR R. SDR VAR F LAB

LI 03 5.40 81 -2.01 .24 .60 6.55 1.14 2.99 .23 .83 20R X LI 03

LI 0 0 6.19 -.02 -.05 .59 1.45 6.36 .96 2.51 .50 1.81 20P X LI 08

LI 21 5.63 -.57 -1.43 .52 1.28 5.08 -.33 -.86 .46 1.66 20P 9 LI 21

Li 2 AP 6.03 -.18 -.44 .77 1.89 5.07 -.33 -.88 .61 2.21 20P 6 L124P

LI 2 8 6.31 .10 .26 .24 . 59 5.40 -.00 -.01 .21 .77 20T 0 LI 28

LI *8 6.17 -.04 -.09 .27 .65 5.39 -.01 -.04 .19 .68 20P 0 LI 48

LI 58 5.59 -.62 -1.55 .32 .79 4.68 -.72 -1.90 .24 .88 20T 6 LI 58

LI 62 5.94 -.27 -.66 .56 1.38 5.26 -.15 -.39 .25 .92 20* 0 LI 62 L182L 5.93 -.27 -.68 .59 1.44 5.27 -.14 -.37 .18 .64 20T 9 L182L

LI 89 6.59 .38 .94 .58 1.42 5.79 .38 1 .01 .26 .96 20R 0 LI 89

LI 91 P 6.25 .04 .11 .19 .47 5.39 -.01 -.04 .13 .47 20P 0 LI 91 P

LI 95 6.05 -.16 -.39 .32 .79 5.27 -.13 -.35 .27 .98 20R 0 LI 95

L21 3 6.16 -.05 -.12 .59 1.44 4.85 -.56 -1.46 .34 1.24 20T 0 L21 3 L218 6.50 .29 .72 .30 .74 5.56 .15 .40 .27 .97 20P 6 L218

L233 5.70 -.51 -1.28 .37 .92 4.58 -.83 -2.17 .29 1 .06 200 0 L233

L2 41 1 .45 -4.76 -11.90 .22 . 55 1.16 -4.25 -11.15 .04 .14 20R • L241 L242 6.02 -.18 -.46 .32 .79 5.16 -.25 -.65 .23 .84 20Y 0 L242

L249 6.34 .13 .34 .19 . 46 5.40 -.01 -.02 .22 .81 20P 0 L249

L254 6.74 .53 1.34 .12 .30 5.41 .01 .02 .25 .90 20P 0 L254

L2 59 7.05 . 84 2.10 .25 .61 5.96 .55 1.45 .27 .99 20P 6 L259

L262 6.39 .18 .45 .45 1.11 6.27 .87 2.28 .51 1.84 20R » L262

L27 5 5.42 -.79 -1.97 .32 .79 4.92 -.49 -1.28 .22 .80 20R 0 L275

L279P 6.22 .01 .02 .45 1.11 5.34 -.07 -.19 . 44 1.59 20P 0 L279P

L29 0 6.43 .22 .56 .26 . 69 5.59 .18 . 47 .20 .74 20P 0 L290

L31 1 5.97 -.23 -.58 .35 . 86 5.28 -.13 -.34 .27 .97 20V 0 L311

L321 5.82 -.38 -.96 .83 2. 03 5.15 - • 26 -.68 .43 1 .57 20V 0 L321 L322 6.53 .33 .81 .85 2.08 5.54 .13 .34 .50 1.80 20P 0 L322

L330 6.94 .73 1.83 .45 1.09 5.94 .54 1.41 .28 1.03 20P 0 L330 L356 6.32 .11 .28 .45 1.11 5.53 .12 .31 .30 1 .08 20P 0 L356

L362 5.73 -.48 -1.21 .49 1.20 5.10 -.23 -.59 .27 .96 20R 0 L362

L37 0 6.59 .39 .97 .25 .61 5. 82 .42 1.09 .22 . 80 20P 0 L370

L3 7 6 6.41 .20 .50 .35 .85 5.45 ' .04 .12 .22 .80 20P 0 L376

L393 6.e8 .67 , 1.68 .36 .89 5.87 .46 1.21 .23 .85 20P 0 L393

L484 5.68 -.52 -1.31 .22 . 54 5.01 -.40 -1.05 .14 .51 20U 0 L4 84 L554 6.25 .05 .11 .51 1.25 5.70 .29 .77 .33 1.19 20T 0 L554

L5 5 6 6.77 .57 1.42 .33 .81 5.88 .47 1.24 .21 .76 20 P 0 L556

L571 6.00 -.21 -.51 .51 1.24 5.98 .57 1.51 .57 2.06 20P • L571 L585 6.12 -.08 -.21 .53 1 . 30 5.53 .12 .31 .14 .49 20V 0 L585

L599 5.98 -.23 -.57 .35 . 85 5.15 -.25 -.66 .29 1.07 20V 0 L599

GR. MB AN • 6.21 KIL0NEWT0N/M GRAND MEAN • 5.41 K I LONE WTO N/M TEST DETERMINATIONS - 20

SD MEANS .40 KIL0NBWTON/M

AVERAGE SDR • SD OF MEANS - .41 XI L0NBWT0N/M

• 38 KIL0NB WT0N/M

AVERAGE SDR - .28

36 LABS IN GRAND XIL0NBWT0N/M MEANS

GR. MEAN - 20.94 LB/15 MM GRAND MEAN * 18.24 LB/1 5 MM TOTAL NUMBER OF LABORATORIES REPORTING - 39

Best Values: J07 6.2 + 0.6 J05 5.4 + 0.5

Data from the following laboratories appear to be

off by a multiplicative factor: 241.
RBPORT HO. 52S TAPP I COLL4BOR4TI VE REFERENCE PR0QR4I1 MARCH 1976 ANALYSIS T20-2 TABLE 2 TENSILE BREAKING STRBNGTH. EILONEVTONS PBR METER

TAPP I STANDARD TAO* 03-76, TEN 31 LB BRBAKING STRBNGTH OF PAPER AND PAPERBOARD ( PBNDULOM-TTPB TESTER

)

LAB MEANS COORDINATES AYG CODB P J07 J05 MAJOR MINOR R. SDR VAR PR8PBRTY-- -TEST INSTRUMENT—-—CONDITIONS

L241 0 1.A5 1.16 -6. 37 .16 .34 20R TBNSILB STRBNGTH, PRIMARILY PRINTING PAPERS. PBNDULUM TESTER U 03 X 5.40 6.55 .19 1.38 .71 20R TENSILE STRENGTH, PRIMARILY PRINTING PAPBRS, PENDULUM TESTER

L275 a 5.42 4.92 -.91 .18 .80 20R TBNSILB STRENGTH, PRIMARILY PRINTING PAPERS, PBNDULUM TESTER

LI 50 a 5.59 4.68 -.96 -.10 .84 20T TBNSILB STRBNGTH, PRIMARILY PRINTING PAPBRS, PENDULUM TESTER

LI 21 a 5.63 o.oe -.64 .15 1.47 20P TBNSILB STRENGTH, PRIMARILY PRINTING PAPERS, PBNDULUM TBSTBR

LA 8 4 a 5.68 5.01 -.66 .07 .53 20U TBNSILB STRBNGTH, PRIMARILY PRINTING PAPERS. PENDULUM TESTER

L23 3 a 5.70 4.58 -.94 -.25 .99 200 TENSILE STRBNGTH, PRIMARILY PR INTI NG PAPERS. PENDULUM TESTER

L352 a 5.73 5. 18 -.51 .16 1 .08 20R TBNSILB STRBNGTH, PRIMARILY PRINTING PAPBRS, PBNDULUM TESTER

L321 a 5.82 5,15 -.46 .07 1.80 20V TBNSILB STRENGTH, PRIMARILY PRINTING PAPERS. PENDULUM TESTER

LI 62

L

a 5.93 5.27 -.30 .08 1.04 20T TENSILE STRENGTH, PRIMARILY PRINTING PAPBRS, PBNDULUM TESTER

LI 62 a 5.94 5.26 -.30 .07 1.15 20* TBNSILB STRBNGTH, PRIMARILY PRINTING PAPBRS. PENDULUM TESTER

L311 a 5.97 5.28 -.26 .07 .92 20V TBNSILE STRBNGTH, PRIMARILY PRINTING PAPBRS. PENDULUM TESTER

L5 99 a 5.98 5.1Q -.34 -.03 .96 20V TBNSILB STRBNGTH, PRIMARILY PRINTING PAPBRS, PENDULUM TESTER

L371 * 6.00 5.98 .24 .56 1.65 20 P TBNSILB STRENGTH, PRIMARILY PRINTING PAPERS. PENDULUM TBSTBR

L242 a 6.02 5.16 -.30 -.05 .82 20 Y TBNSILB STRBNGTH. PRIMARILY PRINTING PAPERS, PENDULUM TESTER

LI ZAP a 6.03 5.07 -.36 -.12 2.05 20P TBNSILB STRENGTH, PRIMARILY PRINTING PAPERS, PENDULUM TBSTER

LI 95 a 6.05 5.27 -.21 .01 .88 2 0 R TENSILE STRBNGTH, PRIMARILY PRINTING PAPERS, PENDULUM TESTER

L5 9 5 a 6.12 5.63 .02 .14 .89 20V TBNSILE STRBNGTH, PRIMARILY PRINTING PAPBRS, PENDULUM TESTER

L21 3 a 6.16 A. 85 -.42 -.37 1 .34 20T TBNSILE STRBNGTH, PRIMARILY PRINTING PAPBRS, PBNDULUM TESTER

LI AS a 6.17 5,39 -.04 .01 .67 20 P TBNSILE STRBNGTH, PRIMARILY PRINTING PAPBRS, PBNDULUM TESTER

LI 08 X 6.19 6.36 .64 .71 1.63 20P TENSILE STRENGTH, PRIMARILY PRINTING PAPBRS, PBNDULUM TESTER

L279P a 6.22 5.34 -.04 -.06 1.35 20 P TENSILE STRENGTH. PRIMARILY PRINTING PAPERS, PENDULUM TESTER

LI 91 P a 6.25 5,39 .02 -.04 .47 20P TBNSILE STRENGTH, PRIMARILY PRINTING PAPERS, PBNDULUM TESTER

L55 A a 6.25 5.70 .23 .18 1.22 20T TENSILE STRENGTH, PRIMARILY PRINTING PAPBRS. PBNDULUM TESTER

LI 2 8 a 6.31 5,40 .07 -.07 .68 20T TBNSILB STRBNGTH, PRIMARILY PRINTING PAPBRS, PENDULUM TESTER

L356 a 6.32 5.53 .16 .01 1.09 20P TBNSILE STRENGTH, PRIMARILY PRINTING PAPBRS, PBNDULUM TESTER

L2A9 a 6.34 5.40 .09 -.10 .64 20P TBNSILB STRENGTH, PRIMARILY PRINTING PAPBRS. PENDULUM TESTER

L262 » 6.39 6.27 .72 .51 1.47 20R TENSILB STRENGTH. PRIMARILY PRINTING PAPBRS, PENDULUM TESTER

L3 76 a 6.41 5.45 .18 -.10 .82 20P TBNSILE STRENGTH. PRIMARILY PRINTING PAPERS, PENDULUM TESTER

L290 a 6.43 5.59 .28 -.02 .71 20 P TBNSILB STRBNGTH. PRIMARILY PRINTING PAPERS, PENDULUM TESTER

L21 8 a 6.50 5.56 .31 -.09 .86 20 P TENSILB STRENGTH, PRIMARILY PRINTING PAPERS, PBNDULUM TESTER

L3 22 a 6.53 5.54 .33 -.13 1.94 20P TBNSILE STRENGTH, PRIMARILY PRINTING PAPERS, PENDULUM TESTER

LI 89 a 6.59 5.79 .54 .02 1.19 20R TBNSILE STRBNGTH, PRIMARILY PRINTING PAPERS. PBNDULUM TBSTER

L370 a 6.59 5.82 .57 .04 .70 20P TBNSILE STRENGTH, PRIMARILY PRINTING PAPERS, PBNDULUM TBSTBR

L2 5 A a 6.74 5.41 .39 -.36 .60 20P TENSILE STRBNGTH, PRIMARILY PRINTING PAPBRS, PBNDULUM TESTER

L5E6 a 6.77 5.88 .74 -.04 .79 20P TENSILB STRBNGTH, PRIMARILY PRINTING PAPBRS, PENDULUM TESTER

L393 a 6.88 5.87 .81 -.12 .87 20 P TENSILE STRBNGTH, PRIMARILY PRINTING PAPERS. PENDULUM TESTER

L330 a 6.94 5.94 .90 -.11 1.06 20P TENSILB STRENGTH, PRIMARILY PRINTING PAPERS, PENDULUM TBSTER

L259 a 7.05 5.96 ,99 -.17 .80 20 P TBNSILB STRENGTH. PRIMARILY PRINTING PAPBRS, PENDULUM TESTER

GMEANS

6.21 5.41 1.00 95* BLLIPSE: 1.35 .48 WITH GAMMA • 43 DBGREES

29
KIL0NENT0N/M

I

TENSILE STRENGTH, PENDULUM TYPE

SAMPLE J07 = 6.2 K I L0NEWT0N/M SAMPLE J05 = 5.4 K IL0NEWT0N/M

SAMPLE J07 = 20.9 LB/15 MM SAMPLE J05 = 18-2 LB/15 MM

17 18 19 20 21 22 23 24 25 26

LB/15 MM

30
REPORT NO. 523 TAPPI C0LLABSRATI VE REFERENCE PROGRAM IIARCB 1978 ANALYSIS T25-1 TABLB t TENSILE BNEROT ABSORPTION. JOOLBS PER SQUARB MBTBR •PACKAGING PAPER

TAPPI STANDARD T494 0S-7O. TBNSILE BREAKING PROPERTIES OF PAPER A PAPERBOARD (CONSTANT RATB OF ELONGATION)

SAMPLE KRAFT BNVEL0PB SAMPLB KRAFT TEST D.-. 20 LAB B63 75 GRAMS PBR SQUARE METER E66 83 GRAMS PER SQUARE MBTER

CODE MEAN DEV N.DBV SDR R. SDR MEAN DEV N. DBV SDR R. SDR VAR F LAB

LI 22 93.3 11.1 1 .71 11.1 .96 75.2 1.3 .24 20.4 1.14 25P 0 LI 22

LI 26 83.7 1.5 .23 12.6 1.08 77.4 3.5 .64 13.4 .75 25P 0 LI 26

LI 51 88.3 6.1 .93 10.9 .94 77.4 3.4 .64 23.8 1.33 25F 0 LI 51

LI 7* 78.7 -3.5 -.54 10.8 .93 73.5 -.4 -.08 28.2 1.58 25Y 0 LI 74

LI 82 88.1 3.9 .90 8.9 .77 70.1 -3.9 -.72 11.1 .62 25B 0 LI 82 L234A 87.1 4.9 .75 13.0 1.12 86.4 12.4 2.30 1 8.6 1.04 25 H 0 L234A

L237B 73.* -8.8 -1.36 8.5 .74 70.4 -3.6 -.66 16.7 .93 25H 0 L237B

L243 81.3 -.0 -.14 13.8 1.19 66.1 -7. 8 -1.45 16.0 .89 25Z a L243

L250 87.0 4.8 .74 10.9 .94 71.9 -2.0 -.38 22.3 1.24 25 A 0 L250

L264 7*4.1 661,9 1 01 .93 94.1 8.10 606.9 533.0 98.64 161.7 9.03 25F * L264

L265 76.5 -5.7 -.88 11.5 .99 69.0 -5.0 -.92 22.0 1.23 25B 0 L265

L267 88.9 6.6 1.02 10.3 .88 75.2 1.2 .22 16.7 .93 25F 0 L267

L26 8 80.0 -2.2 -.34 8.7 .75 78.3 4.3 .80 14.1 .78 25B 0 L268

L273 85.0 2.5 .43 12.3 1.06 74.7 .7 .14 19.0 1 .06 25F 0 L273

L280 85.2 3.0 .47 11.0 .95 63.3 -10.7 -1.98 17.9 1.00 25B 0 L280

L31 2 69.9 -12.3 -1.89 15.6 1 .34 73.1 -.9 -.17 15.8 .88 25 J 0 L312

L318 84.5 2.3 .36 12.4 1.07 81.0 7.0 1 . 30 18.0 1.01 25A 0 L318

L336 72.5 -9,7 -1 .49 15.3 1.32 76.7 2.7 .50 11.5 .64 25A 0 L336

L5 80 76.4 -5. 8 -.89 11.5 .99 71.6 -2.3 -.43 16.9 .94 25C S L560

L604 49.1 -33.1 -5.09 14.0 1.21 70.5 -3. 5 -.64 20.0 1.12 25A e L604

GR. MEAN - 82.2 J0ULBS/SQ M GRAND MEAN - 74.0 J00LES/SQ M TEST DETERMINATIONS - 20 SD MEANS - 6.5 JOULBS/SQ M SD OF MBANS - 5.4 J0ULBS/SQ M 18 LABS IN GRAND MEANS AVERAGE SDR • 11.6 JGULBS/SQ M AVERAGE SDR - 17.9 JOULES/SQ If GR. MEAN • 5.63 FT. LB/SO PT GRAND MEAN - 5.07 FT. LB/SO FT TOTAL NUMBER OF LABORATORIES REPORTING - 20

Best Values: E63 84 + 11 joules per square meter

E66 73 + 7 joules per square meter

The following laboratories were omitted from the grand means because of extreme test results: 604.

Data from the following laboratories appear to be

off by a multiplicative factor; 264.

31
REPORT NO. 5 2S TAPPI C0LLAB6RATI VE REFERBNCB PROGRAM MARCH 1978 ANALYSIS T25-1 TABLE 2 TENSILE ENERGY ABSORPTION, JOULES PER SQUARB METBR - PACKAGING PAPER

TAPPI STANDARD T494 0S-70, TBNSILE BREAKING PROPERTIES OP PAPBR A PAPERBOARD (CONSTANT RATB OF ELONGATION)

LAB MEANS COORDINATES AVG CODE F E63 E66 RAJOR RINOR R. SDR YAR PROPERTY— -TEST INSTRURENT——CONDITIONS

L6 04 0 49.1 70.5 -31.7 10.1 1.16 25A TBNSILE BNBRGY ABS.. PACKAGING PAPBR. PLAT/PLAT JAWS

L3i 2 0 69.9 73. 1 -11 .6 4.1 1.11 25 J TBNSILB BNERGY ABS. , PACKAGING PAPBR, LINE/PLAT JAWS

L33 6 6 72.5 76.7 -7.8 6.4 .98 25A TBNSILE BNBRGY ABS.. PACKAGING PAPBR, FLAT/FLAT JAWS L237B 0 73.4 70.4 -9.5 .3 .83 25H TBNSILB BNBRGY ABS. . PACKAGING PAPBR, 2-PIN STRAIN GAGE

L580 0 76.4 71.6 -6.2 .2 .97 25C TENSILB ENERGY ABS.. PACKAGING PAPER, LINB/LINE JAW S L265 0 76.5 69.0 -7.3 -2.3 1.11 25 B TBNSILB ENERGY ABS., PACKAGING PAPER, PLAT/PLAT JAWS

LI 74 0 78.7 73.5 -3.4 1.0 1.25 25Y TBNSILB BNBRGY ABS. .PACKAGING PAPER. LINE/PLAT JAWS

L268 0 80.0 78.3 -.3 4.9 .77 25 B TBNSILB ENBRGY ABS. , PACKAGING PAPER, linb/flat; JAWS

L243 0 81.3 66. 1 -4.0 -6.8 1.04 25Z TBNSILB BNERGY ABS, .PACKAGING PAPER, LINE/LINE JAWS

LI 2 6 0 83. 7 77.4 2.8 2.6 .91 25P TBNSILB BNBRGY ABS. , PACKAGING PAPBR, PATTERNED PLAT JAWS

L31 8 0 84.5 81.0 4.9 5.5 1.04 25 A TENSILE ENERGY ABS., PACKAGING PAPBR, FLAT/PLAT JAWS

L273 0 85.0 74.7 2.8 -.4 1.06 25F TBNSILE ENBRGY ABS. .PACKAGING PAPBR, LINB/PLAT JAWS

L2 8 0 0 85.2 63.3 -1 .5 -11.0 .98 25B TBNSILB ENBRGY ABS. , PACKAGING PAPER. LINB/FLAT JAWS

L2 50 0 87.0 71.9 3.6 -3.8 1.09 25 A TBNSILB BNERGY ABS., PACKAGING PAPBR, PLAT/FLAT JAWS

L234A 0 87.1 86. 4 9.5 9.4 1.08 25B TBNSILB BNBRGY ABS. , PACKAGING PAPBR, 2-PIN STRAIN GAGB

LI 82 0 88. 1 70.1 3. 8 -5.9 .69 25 B TBNSILB BNERGY ABS. .PACKAGING PAPER. LINB/FLAT JAWS

LI 51 0 88.3 77. 4 6.9 .7 1.13 25P TBNSILB ENBRGY ABS. .PACKAGING PAPER, LINB/FLAT JAWS

L267 0 88.9 75.2 6.6 -1 .5 .91 25F TBNSILB ENBRGY ABS.. PACKAGING PAPER. LINB/FLAT JAWS

LI 22 0 93.3 75.2 10.7 -3.3 1.05 25P TENSILB BNERGY ABS. , PACKAGING PAPBR, PATTERNED FLAT JAWS

L264 0 744.1 606. 9 820.1 222.7 8. 56 25F TBNSILB ENERGY ABS. , PACKAGING PAPER, LINB/FLAT JAWS

GMEANS

82.2 74.0 1 .00 95* ELLIPSE: 18.7 14.2 WITH GAMMA - 23 DBGRBES

32
LD

CD

O

CD

LD tR

CDCO\

DD O

—I ' LD

LD

^r

O

LD

CD

T E . fl . , PACKAGING PAPERS

SAMPLE E63 = 82-

SAMPLE E63 = 5.63

J0ULES/SQ M FT.LB/SQ FT

ID

cn

o

cn

LD

oo

5=

°

CD CD

CO

or ld.

i. i i>

ZD

CD

~D o

[>

LD

CD

CD

CD

LD

LD

SAMPLE E66

SAMPLE E66

_i

74 . 5.07

CD + *x.» NOT IN GRAND MEANS

CD

LlJ ANALYSIS T25-1

LU

_l

Q_

CC

CO

JOULES/SQ M FT . LB/SG FT

i i —

O

O

0

0

0

o

0

o

0

0 0

0

o

0

0

0

0

SAMPLE E63

55 60 65 70 75 80 85 90 95 100 105

J0ULES/SQ M

4.0 4.5 5.0 5.5 6-0

FT.LB/SQ FT

6 .5 7 .0

33
REPORT NO. 52S TAPPI COLLABORATIVE REFERENCE PROGRAM MARCH 1578 ANALYSIS T26-1 TABLE 1 TENSILE ENERGY ABSORPTION, JOULBS PER SQUARE METER • PRINTING PAPBR

TAPPI STANDARD T494 OS-70, TENSILE BREAKING PROPERTIES OF PAPER A PAPBRBOARD (CONSTANT RATB OF ELONGATION)

LAB SAMPLE

J07 PRINTING

85 GRAMS PBR SQUARE METES

SAMPLE

JOS PRINTING102 GRAMS PBR SQUARB MBTBR TBST D.*' 20 CODE MEAN DEV N.DEV SDR R. SDR MEAN DBV N. DBV SDR R. SDR VAR P LAB

LI 00 73.5 -.7 -.09 6.2 .70 56.6 -2.8 -.52 6.2 1.05 26A a LI 00

LI 15 72.7 -1.5 -.20 4.2 .48 58.6 — • 8 -.15 3.4 .58 26C s LI 15

LI 18 80.7 6.5 .89 6.4 .73 59.8 .4 .08 3.9 .65 26B 9 LI 18

LI 22 76.2 2.0 .28 12.1 1.38 63.7 4.3 .78 5.1 . 86 26L 9 LI 22

LI 39 74.3 .1 .02 9.0 1.03 60.0 .6 .12 7.2 1.23 26H 0 LI 39

LI 59 63.3 -10.9 -1 .49 18.6 2.12 46.6 •12.8 -2.34 8.0 1 . 36 26F 0 LI 59

LI 6 3 77.3 3.1 .43 9.6 1 .10 58.0 -1.4 -.26 4.6 .78 26J 9 LI 63

LI 6 7 71.0 -3.2 -.44 4.2 . 48 70.5 11.1 2.03 3.2 .55 26D • LI 67

LI 85 71 .5 -2.7 -.36 7.1 .81 55.3 -4.1 -.74 6.2 1.05 26C 0 LI 85 L206 65.9 -8.3 -1.13 12.2 1.39 56.6 -2.8 -.51 10.0 1 .70 26Y e L206

L2 31 85.7 11.5 1.58 9.1 1.04 58.6 -.8 -.15 6.0 1 .03 26E 0 L231 L250 72.7 -1.5 -.21 5.1 .58 58.2 -1.2 -.23 4.6 .77 2 6 A 9 L2S0 L255 90.1 15.9 2.18 6. 8 .78 69.2 9.8 1.80 6. 3 1.08 26P 9 L255

L309 81*3 7.1 .98 9.5 1.09 65.7 6.3 1.14 7.3 1.23 261 0 L309

L31 8 77.3 3.1 .43 8.1 .92 58.4 -1.0 -.18 5.2 .89 26A 0 L31 8 L372 57.9 1 o GJ -2.24 5. 9 .67 50.8 -8.7 -1.58 4.0 .68 26T 9 L372

L378 76.0 1.8 .25 8.5 .97 62.4 3.0 .55 5.7 .96 26A 0 L378

L393 75.5 1.3 .18 8.3 .95 59.4 -.0 -.01 4.1 .70 26V 9 L393

LA42 76.5 2.3 .31 6.8 .78 63.8 4.4 .81 7.0 1.19 26B 9 L442

L56 7 70.8 -3.4 -.46 15.5 1.77 60.3 . 9 .17 6.6 1 .12 26 A 9 L567

L575 77.9 3.7 .51 8. 8 1.01 61.4 2.0 .36 6.3 1.06 26A 0 L575

L5 9 2 64.0 -10.2 -1.40 6.2 .71 53.0 -6.4 -1.17 6.2 1 .04 26G 9 L592

GR. MEAN - 74.2 JOULBS/SQ M GRAND MEAN • 59.4 JOULBS/SQ M TBST D 3TB RM I NATIONS - 20 SD MEANS

GR. MBAN

- 7.3

- 5.083

JOULES/SQ M AVERAGE SDR FT.LB/SQ PTSD 0F MBANS -

• 8.8 J0ULES/SQ M GRAND MEAN •

5.5 4.069

J0ULBS/SO M AVBRAG6 SDR - FT.LB/SQ PT

5. 9 22 LABS IN JOULBS/SQ

GRAND

M MBANS

TOTAL NUMBER OF LABORATORIES REPORTING - 22

Best Values: J07 75 + 12 joules per square meter

J05 59 + 11 Joules per square meter

34
REPORT NO. 52S TAPPI COLLABORATIVE REFERENCE PROGRAM MARCH 1978 ANALYSIS T26-1 TABLE 2 TENS I LB ENERGY ABSORPTION, JOULBS PBR SQUARB METER - PRINTING PAPER

TAPPI STANDARD T494 0S-70, TENSILE BRBAEING PROPERTIES OP PAPER A PAPERBOARD (CONSTANT RATB OF ELONGATION)

LAB MEANS COORDINATES AVG

CODE P J07 JOS MAJOR MINOR R. SDR VAR PROPERTY-- -TEST INSTRUMENT—--CONDITIONS

L372 0 57.9 50.0 •18.4 1.7 .68 26 Y TENSILE BNERGY ABS. .PRINTING PAPBBS, LINB/PLAT JAWS

LI 59 0 63. 3 46.6 -16.1 -4.7 1.74 26F TENS I LB ENERGY ABS. .PRINTING PAPERS, LINB/FLAT JAWS

L592 0 64. 0 53.0 -12.0 .2 .88 26G TENSILE ENERGY ABS. .PRINTING PAPBBS, LIME/LIME JAWS

L206 0 65.9 56.6 -8.4 2.2 1.54 26 Y TENSILE BNERGY ABS. .PRINTING PAPERS, LINB/PLAT JAWS

L567 0 70.8 60.3 -2.3 2.6 1.44 26 A TBNSILB ENBRGY ABS., PRINTING PAPERS, PLAT/PLAT JAWS

LI 67 • 71.0 70.5 3.4 11.0 .51 26D TENSILE BNERGY ABS. .PRINTING PAPERS, 2-PIN STRAIN GAGB

LI 85 0 71.5 55.3 -4.5 -1.9 .93 26C TBNSILE ENBRGY ABS. .PRINTING PAPERS, LINE/LINE JAWS

L2 5 0 0 72.7 56.2 -1.9 -.2 .68 26 A TENS I LB ENERGY ABS. , PRINTING PAPERS, FLAT/PLAT JAWS

LI 1 5 0 72.7 58.6 -1.7 .1 .53 26C TBNSILE ENERGY ABS. . PRINTING PAPERS, LINE/LINB JAWS

LI 00 0 73. 5 56.6 -2.1 -2.0 .88 26A TENSILE ENERGY ABS. , PRINTING PAPERS, FLAT/FLAT JAWS

LI 39 0 74.3 60.0 .5 .5 1.13 26H TBNSILE ENERGY ABS. . PRINTING PAPERS, 2-PIN STRAIN GAGB

L393 0 75.5 59.4 1.1 -.7 .82 26V TENSILE ENERGY ABS. .PRINTING PAPERS, LINB/FLAT JAWS

L378 0 76.0 62.4 3.2 1.5 .97 26A TENSILE ENERGY ABS. , PRINTING PAPERS, FLAT/PLAT JAWS

LI 2 2 0 76. 2 63.7 4.1 2.4 1.12 26L TENSILE ENERGY ABS. .PRINTING PAPERS, PATTERNED PLAT JAWS

L442 0 76.5 63.8 4,3 2.5 .99 2 6 B TBNSILE ENERGY ABS., PRINTING PAPERS, LINE/PLAT JAWS

LI 63 0 77,3 58.0 1.8 -2.9 .94 26 J TBNSILB ENBRGY ABS. .PRINTING PAPERS, LINE/FLAT JAWS

L31 8 0 77.3 58.4 2.

1

-2.6 .91 26A TENSILE ENERGY ABS. , PRINTING PAPERS, PLAT/FLAT JAWS

L575 0 77.9 61.4 4.2 -.4 1 .04 2 6 A TENSILE ENERGY ABS. , PRINTING PAPERS. PLAT/PLAT JAWS

LI 18 0 80.7 59.8 5.7 -3.2 .69 26E TENSILE ENERGY ABS. , PRINTING PAPERS, FLAT/PLAT JAWS

L3 09 0 81.3 65.7 9.4 1.3 1.16 261 TENSILE ENBRGY ABS. , PRINTING PAPERS. FLAT/FLAT JAWS

L2 31 0 85.7 58.6 9,2 -7.0 1.03 26E TBNSILE ENERGY ABS. .PRINTING PAPERS, FLAT/PLAT JAWS

LESS 0 90.1 69.2 18.6 -.5 .93 26P TBNSILB BNERGY ABS. .PRINTING PAPERS, PATTERNBD FLAT JAWS GMEANS

74.2 59.4 1.00 95% ELLIPSE: 22,8 9.5 WITH GAMMA - 33 DBGRBES

35
LD

LD

O

LD

LD

-'T

h—

L- o

<3 'T CO

an

_i

Li_ co

o

m

LD

CsJ

T . E . R •

PRINTING PAPERS

SAMPLE J07 = 74. J0ULES/SQ M SAMPLE J05 = 59. J0ULES/SQ M SAMPLE J07 = 5.08 FT . LB/SQ FT SAMPLE J05 = 4.07 FT. LB/SQ FT

J0ULES/SQ M

i 1 1 1 1 1 1 3.5 4.0 4.5 5.0 5-5 6-0 6-5

FT. LB/SQ FT

36
RFPORT NO. 52 S TAPPI COLLABORATIVE REFERENCE PROGRAM MARCH 1978 ANALYSIS T28- t TABLE 1 BLONGATION TO BREAK. PERCBNT - PACKAGING PAPER

TAPPI STANDARD TA9A OS-70. TENSILE BREAKING PROPBRTIBS OP PAPBR A PAPBRBOARD (CONSTANT RATE OF ELONGATION 1 SAMPLE KRAFT BNVELOPB SAMPLE KRAFT TBST D» ' 20 LAB E63 75 GRAMS PBR SQUARE METER E66 83 GRAMS PBR SQUARE METER

C0DB MEAN DEV N.DEV SDR R. SDR MEAN DEV N. DEV SDR R.SDR VAR F LAB

LI 22 3.59 .55 1.65 .28 . 99 3.16 .30 .87 .53 1.20 28P 0 LI 22

LI 2 6 2.99 -.05 -.14 .35 1.21 2.96 .11 .30 .40 .91 28C 0 LI 26

LI 51 3.38 .34 1 .03 .27 .97 3.22 .36 1.04 .59 1.34 28B 0 LI 51

LI 82 3.21 .18 .53 .23 .81 2.80 -.05 -.15 .33 .75 28B 0 LI 82

L2 43 3.01 -.02 -.07 .36 1.26 2.67 -.19 -.54 .49 1.12 28C 0 L243

L2 6 4 2.76 -.27 -.81 .27 . 94 2.54 -.31 -.89 .55 1.24 28B 0 L2 64 L265 2.73 -.30 -.90 .30 1.04 2.56 -.29 -.83 .57 1 .29 28A 0 L265

L267 3.45 .41 1 .23 .27 .94 2.93 .08 .22 .49 1.11 28B e L267

L2 6 9 2.75 -.28 -.84 .20 .72 3.01 .15 .44 .26 .59 28B 0 L268

L280 3.09 .06 .17 .28 .98 2.62 -.23 -i66 .46 1.05 28B 0 L280

L312 2.40 -.64 -1.90 .32 1.14 2.47 -.38 -1.09 .37 .83 28B 0 L312

L31 0 3.24 .21 .61 .28 .98 3. 19 .34 .96 .39 . 88 28A 0 L318

L324 2.80 -.23 -.69 .34 1.20 2.75 -.10 -.29 .32 .72 28P 0 L324

L3 3 6 3.31 .28 .83 .26 .92 3.43 .57 1.64 .35 .80 2 8 A 0 L336

L580 3.07 .04 .12 .31 1.08 2.86 .00 .01 .45 1 .02 28C G L580

L581 2.51 -.53 -1.58 .22 .77 2.06 -.80 -2.27 .36 .82 2 8A 0 LE81 L582 3.28 .25 .74 .30 1.07 3.29 .43 1.24 .58 1.33 28A 0 L582

GB. BEAN - 3.04 PERCENT GRAND MEAN - 2.86 PERCBNT TEST DETERMINATIONS - 20 SD MEANS - .34 PBRCBNT SD OF MEANS - .35 PERCENT 17 LABS IN GRAND MEANS AVERAGE SDR .28 PERCBNT AVERAGE SDR - .44 PERCENT

LI 5 3 3.41 .38 1.13 .29 1.03 2.96 .10 .30 .48 1.08 28Q LI 53 TOTAL NUMBER OF LABORATORIES REPORTING - 18

Best Values: E63 3.1 + 0.5 percent

E66 2.9 + 0.4 percent

37
REPORT NO. 52S TAPPI COLLABORATIVE RBFBRENCB PROGRAM MARCH 1979 ANALYSIS T28-1 TABLE 2 BLONGATION TO BRBAK, PERCENT - PACKAGING PAPBR

TAPPI STANDARD T494 OS-70. TBNSILE BREAKING PROPERTIES OF PAPBR & PAPERBOARD (CONSTANT RATE OP ELONGATION)

LAB MEANS COORDINATES AVG

CODE F E63 E66 MAJOR MINOR R. SDR VAR PROPERTY— -TEST INSTRUMENT—CONDITIONS

L312 0 2.40 2.47 -.71 .20 .98 28B ELONGATION. PACKAGING PAPBR, LOAD CELL, LINE/FLAT JAWS

L581 0 2.51 2.06 -.94 -.16 .79 28 A EL ONGATI ON. PACKAGING PAPBR. LOAD CELL, FLAT/FLAT JAWS

L265 0 2.73 2.56 -.42 .02 1.17 28 A BLONGATION. P ACKAGI NO PAPER, LOAD CELL, FLAT/FLAT JAWS

L2 6 8 0 2.75 3.01 -.08 .31 .65 28B ELONGATI ON, P ACKAGI NG PAPER. LOAD CBLL, LINB/FLAT JAWS

L264 0 2.76 2.54 -.41 -.02 1.09 28B ELONGATION, PACKAGING PAPER, LOAD CELL, LINB/FLAT JAWS

L324 0 2.80 2.75 -.23 .10 .96 28P BLONGATION, PACKAGING PAPBR. LOAD CELL. PATTERNED FLAT JAWS

LI 26 0 2.99 2.96 .05 .11 1.06 28C ELONGATION, PACKAGING PAPBR, LOAD CBLL, LINB/LINB JAWS

L2 43 0 3.01 2.67 -.15 -.11 1.19 28C ELONGATION, PACKAGING PAPER, LOAD CELL, LINE/LINE JAWS

L580 0 3.07 2.86 .03 -.03 1.05 28C ELONGATION, PACKAGING PAPBR, LOAD CBLL. LINB/LINB JAWS

L2 80 0 3.09 2.62 -.13 -.20 1.01 28B ELONGATION. PACKAGING PAPBR. LOAD CBLL, LINB/FLAT JAWS

LI 82 0 3.21 2.80 .08 -.17 .78 28B ELONGATI ON, PACKAGI NG PAPBR, LOAD CBLL, LINE/PLAT JAWS

L3I 8 0 3.24 3.19 .36 .08 .93 2 8 A ELONGATION, PACKAGING PAPBR, LOAD CBLL, FLAT/FLAT JAWS

L582 0 3.28 3.29 .49 .12 1.20 2 8 A ELONGATION. PACKAGING PAPBR, LOAD CBLL, FLAT/FLAT JAWS

L336 0 3.31 3.43 .61 .19 . 86 28 A ELONGATION, PACKAGING PAPBR, LOAD CELL, PLAT/FLAT JAWS

LI 51 0 3.38 3.22 .50 .00 1.15 28 B ELONGATION, PACKAGING PAPBR, LOAD CBLL, LINE/FLAT JAWS

LI 53 3.41 2.96 . 34 -.20 1.05 28Q ELONGATION. PACKAGING PAPBR, PENDULUM, PATTERNED FLAT JAWS

L26 7 0 3.45 2.93 . 3* -.25 1.02 28B ELONGATION. PACKAGI NG PAPBR, LOAD CBLL. LINB/FLAT JAWS

Li 2 2 0 3.59 3.16 .60 -.19 1 .10 28P BLONGATION, PACKAGING PAPBR. LOAD CBLL, PATTERNED FLAT JAWS

Gif BANS: 3.04 2. 86 1.00

95* ELLIPSE: 1.28 .46 WITH GAMMA • 46 DEGREES

38
PERCENT

EL0NGAT 1 0N T0 BREAK » PACKAGING PAPER

SAMPLE E63 = 3-0 PERCENT SAMPLE E66 = 2.9

-L-, 1 1 i_ PERCENT

o

co

co

CD

on

m-co

CMCOo

CO

ooCM

CD

CSJ

MCM

CM

CMO

CM

CD

CO + .X.* N0T IN GRAND MEANS

CD

LlJ ANALYSIS T28-1

LU

_l

Q_

cr

co

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o

o

o o

o

o

©

«-

©

©

o

o

o ©

Gd

SAMPLE E63

8 2^0 2T2 2^4 2T6 2T8 3T0 3^2 3T4 3^6 3T8 4 T 0 4T2 4.4

PERCENT

39
REPORT NO. 52

TAPPI COLLABORATIVE REFERENCE PROGRAM MARCE 1978 ANALYSIS T29-1 TABLE 1 ELONGATION TO BREAK. PERCENT • PRINTING PAPER

TAPPI STANDARD T494 OS-70, TENSILE BREAKING PROPERTIES OF PAPER A PAPERBOARD (CONSTANT RATB OF BL0NGATI0N

SAMPLE PRINTING SAMPLE PRINTING TEST D.- 20 LAB J07 85 GRAMS PBR SQUARE METBR JOS 102 GRAMS; PER SQUARE METER

CODE MEAN DEV N.DBV SDR R. SDR MEAN DEV N. DB V SDR R. SDR VAR P LAB

LI 00 1.620 -.046 -.22 .124 .84 1.670 -.012 -.06 .108 .94 29A 0 LI 00

LI 0 5 1.417 -.449 -2.15 .735 4.99 .784 -.897 -4.67 .169 1.47 29A # LI 05

LI 18 2.028 .162 .78 .131 . 89 1.721 .039 .21 .086 .75 29A © Lite

LI 22 1.969 .103 .49 .175 1.19 1.852 .171 .89 .101 . 88 29P 0 LI 22

Li 8 5 1.910 .044 .21 .113 .77 1.700 .019 .10 .114 .99 29C 0 LI 85

LI 9 OR 1.806 -.060 -.29 .200 1.36 1.707 .026 .14 .132 1.15 29A 0 L190R

L2 31 2.285 .419 2.00 .198 1.34 2.005 .323 1.68 .105 .92 29A 0 L2 31 L2 5 5 2.144 .278 1.33 .107 .73 1.941 .260 1.35 .112 .97 29P 6 L255

L3C 9 2.025 .159 .76 .151 1.03 1.841 .159 .83 .124 1.08 29A © L309

L31 8 1.987 .121 .58 .134 .91 1.758 .076 .40 . 090 .78 29 A 0 L318

L344 1.784 -.083 -.40 .177 1.20 1.569 -.113 -.59 .131 1.15 29A 0 L344

L37 2 1.562 -.304 -1.46 .094 .64 1 .401 -.280 -1 .46 .103 .90 29B 0 L372

L3 7 8 1 . 865 -.001 -.01 .118 . 80 1 • 530 -.152 -.79 .080 .70 29A a L378

L442 1 . 899 .033 .16 .133 .91 1.825 .143 .75 .125 1.09 29B a L442

L561 1 . 450 -.416 -1.99 .196 1.33 1.255 -.427 •2.22 .167 1.46 29B 0 L561 L56 7 1.630 -.236 -1.13 .230 1 . 56 1.510 -.172 -.89 .137 1.20 29A a L567

L5 7 5 1. 871 .005 .02 .131 . 89 1.709 .027 .14 .110 .96 29A a L575

L592 1.689 -.177 -.85 .091 . 62 1.590 -.092 — • 48 .124 1.08 29C 0 L592

GR. MEAN - 1.866 PERCENT GRAND MEAN - 1.682 PERCBNT TBST DETERMINATIONS - 20 SD KEANS - .209 PERCENT SD 0P MBANS - .192 PERCENT 17 LABS IN GRAND MEANS AVERAGE SDR * .147 PBRCBNT AVERAGE SDR - .115 PBRCBNT

L242 2.195 .329 1.57 .154 1 . 04 2.065 • 383 2.00 .114 .99 29R L242

L484 1.501 -.365 -1 .75 .228 1.55 1.348 -•334 -1.74 .209 1.82 29R L484 TOTAL NUMBER OF LABORATORIES REPORTING * 20

Best Values: J07 1.9 + 0.3 percent

J05 1.7 + 0.2 percent

The following laboratories were omitted from the grand means because of extreme test results: 105.

40
REPORT NO. 52 S TAPPI COLLABORATI VB RBPEBENCB PROGRAM MARCH 1978 ANALYSIS T29-1 TABLE 2 ELONGATION T0 BRBAK. PBBCENT • PBINTING PAPER

TAPPI STANDARD T494 09-70. TEN S I LB BREAKING P B0PBBTIB3 OF PAPBR A PAPERBOARD (CONSTANT RATB OF ELONGATION

)

LAB MEANS COORDINATES AYG

C6DB F J07 J05 MAJOR MINOR R. SDR VAR PR0PBRTT— -TEST INSTRUMENT-——CONDITIONS

LI 05 * 1 .417 .784 -.937 -.359 3.23 29A ELONGATION. PRINTING PAPBRS, LOAD CBLL, FLAT/FLAT JAWS

L561 a 1 .450 1.255 -.595 -.034 1.39 29B ELONGATION, PRINTING PAPERS, LOAD CELL , LI NB/PLAT JAWS

L484 1.S01 1.348 -.495 .000 1.68 298 ELONGATION, PRINTING PAPBRS, PBNDULUM, FLAT/FLAT JAWS

L372 6 1.562 1.401 -.414 -.001 .77 29B BLONOATION, PRINTING PAPBRS, LOAD CBLL, LI NB/PLAT JAWS

L557 a 1 .630 1.310 -.190 .033 1.38 29A ELONGATION. PRINTING PAPBRS, LOAD CELL, FLAT/FLAT JAWS

L5 9 2 0 1.689 1.590 -.192 .052 .85 29C BLONOATION. PRINTING PAPBRS, LOAD CELL. LINE/LI NB JAWS

L3 4 4 0 1.784 1.369 ••137 -.028 1.17 29 A ELONGATION. PRINTING PAPBRS. LOAD CELL. PLAT/FLAT JAWS

LI 90 R 8 1.806 1.707 • ,027 .060 1.25 29A BLONOATION, PRINTING PAPERS, LOAD CELL. PLAT/PLAT JAWS

LI 00 0 1.820 1.670 • .042 .023 .89 29 A BLONOATION, PRINTING PAPBRS, LOAD CBLL, PLAT/FLAT JAWS

L37Q a 1.865 1.530 •• $ 03 -.111 .75 29 A ELONGATION. PRINTING PAPERS, LOAD CBLL. FLAT/FLAT JAWS

L575 a 1.871 1.709 ,022 .017 .92 29A ELONGATION, PRINTING PAPBRS, LOAD CELL, PLAT/FLAT JAWS

L442 a 1.899 1.825 ,121 .083 1.00 29B ELONGATION, PRINTING PAPBRS, LOAD CBLL, LINB/PLAT JAWS

LI 8 5 a 1.910 1.700 ,045 -.015 .88 29C BLONOATION, PRINTING PAPBRS, LOAD CBLL, LINB/LI NB JAWS

LI 22 a 1 .969 1.852 ,192 .037 1.03 29P ELONGATION, PRINTING PAPBRS, LOAD CBLL, PATTBRNED PLAT JAWS

L31 8 a 1 .987 1.758 .1*1 -.025 .85 29 A BLONOATION, PRINTING PAPBRS, LOAD CELL, FLAT/FLAT JAWS

L309 a 2.02 5 1.841 .226 .011 1,05 29 A ELONGATION. PRINTING PAPBRS, LOAD CELL, FLAT/PLAT JAWS

LI 18 a 2.02 8 1.721 ,J46 -.080 .82 29A BLONOATION, PRINTING PAPBRS, LOAD CELL, FLAT/FLAT JAWS

L2 5 5 a 2.144 1.941 ,980 .004 .85 29P BLONOATION. PRINTING PAPERS, LOAD CBLL, PATTERNED PLAT JAWS

L2 42 2.195 2.065 ,»01 .061 1.02 298 ELONGATION. PRINTING PAPBRS, PENDULUM. FLAT/FLAT JAWS

L231 a 2.285 2.005 ,927 -.044 1.13 29 A BLONOATION, PRINTING PAPERS, LOAD CELL, PLAT/FLAT JAWS

GMFANS: 1 . 866 1.682 1.00

95% ELLIPSE a ,782 .143 WITH GAMMA * 42 DBOBBES

41
PERCENT

EL0NGRTI0N T0 BREAK, PRINTING PAPER

SAMPLE J07 = 1.87 PERCENT SAMPLE J05 = 1.68 PERCENT

+ .X.* N0T IN GRAND MEANS LDO—> ANALYSIS T29-1

LU

Q_

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co

o~w

o

o

o

o o

o

ID o o

o

o

o

o

o

SAMPLE J07

1.1 nr m nr nr nr eg eg tg nr eg eg eg eg 2.5 2.6

PERCENT

42
REPORT NO. 52S TAPPI COLLABORATI VE REFERENCE PROGRAM ANALYSIS T30-1 TABLB I FOLDING ENDURANCE (MIT). DOUBLE FOLDS

TAPPI STANDARD T5S1 SU-69

MARCH 1978

LAB SAMPLE

H35 PRINTING

151 GRAMS PER SQUARE METER

SAMPLE

H47 PRINTING04 GRAMS PER SQUARE METER TEST D. 1 15 C0D8 MEAN DEV N. DEV SDR R. SDR MEAN DBV N. DEV SDR R. SDR VAR F LAB

LI 00M 57. -15. -.58 18. .79 58. -15. -1.07 13. .68 30M 0 LI 00

M

LI 00N 52. -20. -.78 18. . 80 59. -15. -1.04 12. .64 30N 0 L100N

LI 05 28. -44. -1.69 9. .40 55. -19. -1 .31 21 . 1.14 30M 0 LI 05

LI 10 72. 0 . .01 15. .69 73. -1 . -.07 11 . .61 30D 0 LI 18

LI 21 39. -32. -1.24 9. .42 68. -6. -.41 13. .72 3 0 M 6 LI 21

LI 22 76. 4. .15 26. 1.17 94. 20. 1.42 35. 1.90 30M 0 LI 22

LI 2 4 54. — 18. -.68 16. .72 69. -5. -.34 12. .64 30N 0 LI 24

LI 50 96. 24. .93 35. 1.58 55. -19. -1.30 22. 1.21 30M « LI 50

LI 5 0 34. -38. -1.44 23. 1.05 51. -22. “1 .54 10. .54 30N 5 LI 58

LI 5 9 1 00. 28. 1.09 27. 1.20 76. 2. .15 23. 1.26 30N 0 LI 59

LI 62 60. -12. -.46 10. .47 82. 9. .62 17. .93 30 M 0 LI 62

LI 6 3 77. 5. .21 22. .97 69. -5. -.34 26. 1.41 30N 6 LI 63

LI 82M 101. 29. 1.13 24. 1.07 94. 20. 1.40 19. 1.02 30M 0 LI 82 M

LI 05 117. 45. 1.71 41. 1.85 82. 9. .61 17. .94 30N 0 LI 85 L190C 57. -14. -.55 29. 1.29 76. 3. .18 21 . 1.14 30N 5 L190C

L2 21 111. 39. 1.48 24. 1.10 102. 28. 1 .96 37. 2.02 30N 0 L221 L223F 100. 28. . 1.09 27. 1.22 78. 5. .31 12. .68 30M 0 L223F

L230 77. 5. .18 25. 1.14 73. -1 . -.05 16. .87 30N 0 L230

L232 112. 41 . 1.56 20. .91 72. -2. -.12 24. 1.30 3 ON 0 L232 L236 60. -11. -.44 24. 1.07 79. 6. .39 24. 1.29 30N 0 L236

L238A 71. -0. -.02 17. .76 79. 5. .35 14. .75 30 N 0 L238A L230B 56. -16. -.60 27. 1.19 63. -11 . -.75 17. .91 30D 0 L238B

L243 98. 26. 1.01 30. 1.36 66. -7. -.49 12. .67 3 0 D O L243 L254 62. -10. -.39 25. 1.11 59. -14. -1.00 25. 1 .36 30M 0 L254

L262 45. -27. -1.05 8. .36 66. -8. -.53 18. .96 30N 0 L262 L275 117. 45. 1.72 35. 1.59 104. 31 . 2.14 28. 1 .52 30N 0 L2 75

L2 7 0 85. 13. .49 34. 1.51 60. -14. -.97 14. .74 30C 0 L278

L279 77. 5. .20 28. 1.25 86. 12. .87 21 . 1.12 30N 0 L279

L299 32. -39. -1.51 16. .72 62. -11 . -.80 16. .86 30N 0 L299

L321 77. S. .19 35. 1.59 86. 13. .90 13. .73 30M 0 L321 L326N 131. 60. 2.28 16. .72 156. 83. 5.75 14. .78 30N X L326N

L339 4. -68. -2.59 2. .08 23. -50. -3.49 8. .41 3 ON ft L339 L366A 45. -26. -1.01 18. .81 67. -7. -.47 18. .96 30N 0 L366A

L376 46. -26. -1.00 14. .63 74. 0 . .03 20. 1.08 30N 0 L376

L370 79. 7. .27 17. .74 84. 11. .77 15. .81 3 0 N 0 L378

L3 0 0 78. 6. .22 23, 1.02 74. 0 . .00 19. 1 .02 30N 0 L388

L390 35. -37. -1.42 11. .48 60. -14. -.95 13. .73 3 ON 0 L390 L396M 115. 43. 1.65 34. 1.52 94. 20. 1 . 42 22. 1.22 30N 0 L396M

L5 31 27. -45. -1.72 15. .67 54. -20. -1.36 26. 1 .41 30N 0 L531 L565 84. 12. .47 23. 1.05 70. -4. -.27 16. .87 30N 0 L565

L567 98. 26. 1.00 40. 1.78 f )8. 34. 2.39 17. .90 30N 0 L567

L509 67. -5. -.19 16. .71 58. -16. -1.11 17. .90 30N 0 L589

L59 9 72. 0 . .00 18. .82 79. 6. .38 14. .76 30C 0 L599

GK • MB AN - 72. DOUBLE FOLDS GRAND MEAN - 73. DOUBLE 1FOLDS TEST DETERMINATIONS - 15

SD MEANS - 26. DOUBLE FOLDS

AVERAGE SDR

SD OF MEANS -

- 22. DOUBLE FOLDS

14. DOUBLE FOLDS AVERAGB SDR - 18.

41 LABS IN GRAND

DOUBLE FOLDS MEANS

LI 4 3 213. 141. 5.42 119. 5.32 122. 48. 3.35 28. 1 . 54 30T LI 43 L102S 856. 784. 30.05 167. 8.37 146. 73. 5.07 37. 2.04 30S L182S

LI 90

D

529. 453. 17.53 164. 7.37 99. 26. 1.79 17. .95 30S L190D

L2 80 45. -27. -1.04 26. 1.18 56. -18. -1.24 IS. .83 30K L280 L326S 403. 331. 12.69 2 09. 9. 38 118. 44. 3.09 34. 1.86 3 OS L326S L366B 43. -29. -1.11 23. 1.05 114. 41. 2.86 24. 1.32 30T L366B L396S 252. 180. 6.90 214. 9.58 143. 69. 4.83 19. 1.05 30T L396S

L5 01 467. 396. 15.16 236. 10.57 116. 42. 2.95 30. 1 .63 3 OT L561 TOTAL NUMBER OF LABORATORIES REPORTING - 51

Best Values: H35 75 double folds H47 75 double fold?

The following laboratories were omitted from the grand means because of extreme test results: 339.

The ISO (International Standards Organization) is proposing the MIT folding endurance be reported

as the logarithm (to the base 10) of the double

fold instead of the double fold as in the past.

Please see page 46 of this report for a demon- stration of this proposal.

43
1*1

REPORT NO. 52S TAPPI COLLABORATIVE REFER BNCE PROGRAM MARCH 1978 ANALYSIS T30-1 TABLE 2 FOLDING ENDURANCE (MIT), DOUBLE FOLDS

TAPPI STANDARD T51 1 SU-69 LAB MEANS COORDINATES AVG CODB F H35 H47 MAJOR MINOR R. SDR VAR PR0PBRTY---TBST

L339 # 4. 23. -82. -20. .25 30N FOLDING BNDURANCB

L531 0 27. 54. -49. -I. 1.04 30N FOLDING BNDURANCB

LI 0 5 0 28. 55. -48. -0. .77 30M FOLDING BNDURANCB

L299 0 32. 62. -41 . 5. .79 30 N FOLDING BNDURANCE

LI 58 0 34. 51. -43. -6. .80 30N FOLDING BNDURANCB

L390 0 35. 60. -39. 2. .60 30N FOLDING ENDURANCB

LI 21 0 39. 68. -32. 7. .57 30M FOLDING BNDURANCB

L366B 43. 114. -11. 49. 1.18 30 T FOLDING BNDURANCE

L262 0 45. 66. -28. 4. .66 30 N FOLDING ENDURANCB

L280 45 . 56. -32. -6. 1.00 30 X FOLDING ENDURANCB

L366A 0 45. 67. -27. 4. .88 30N FOLDING BNDURANCB

L37 6 0 46. 74. -24. 10. .86 30N FOLDING BNDURANCE

LI 00N 0 52. 59. -24. -6. .72 30N FOLDING ENDURANCB

LI 24 6 54. 69. -18. 2. .68 30N FOLDING BNDURANCE

L238B 0 56. 63. -19. -4. 1.05 30 D FOLDING BNDURANCB

L100M 0 57. 58. -20. -8. .73 30M FOLDING BNDURANCE

L190C 0 57. 76. -12. 8. 1 .21 30N FOLDING ENDURANCE

LI 62 0 60. 82. -8. 13. .70 30 M FOLDING ENDURANCB

L236 0 60 . 79. -8. 10. 1.18 30N FOLDING ENDURANCB

L254 0 62. 59. -IS. -9. 1 .24 30 M FOLDING BNDURANCB

L589 0 67. 58. -1 1 . -13. .81 30N FOLDING ENDURANCE

L238A 0 71 . 79. 2. 5. .75 30N FOLDING BNDURANCB

L59 9 0 72. 79. 2. 5. .79 30C FOLDING ENDURANCE

LI 1 8 0 72. 73. -0. -1 . .65 30 D FOLDING BNDURANCB

LI 2 2 0 76. 94. 12. 17. 1 .53 30M FOLDING ENDURANCE

L230 0 77. 73. 4. -3. 1.00 30N FOLDING ENDURANCB

L3 21 0 77. 06. 10. 10. 1.16 30 M POLDING BNDURANCE

L279 0 77. 86. 10. 9. 1.19 30 N FOLDING ENDURANCB

LI 6 3 0 77. 69. 3. -7. 1.19 30N FOLDING ENDURANCB

L38 8 0 78. 74. 5. -2. 1.02 30 N FOLDING ENDURANCB

L378 0 79. 04. 1 1 . 7. .78 30N FOLDING BNDURANCE

L565 0 84. 70. 10. -8. .96 30 N FOLDING ENDURANCB

L278 0 85. 60. 6. -18. 1.12 30C FOLDING ENDURANCB

LI 5 0 « 96. 55. 1 5. -26. 1.39 30 M FOLDING BNDURANCB

L567 0 98. 108. 37. 22. 1.34 30N FOLDING BNDURANCE

L243 0 98. 66. 22. -17. 1 .01 30 D FOLDING BNDURANCB

LI 59 a 1 00. 76. 27. -9. 1.23 30 N FOLDING ENDURANCE

L223P 0 1 00. 78. 28. -7. . 95 30M FOLDING ENDURANCE

L182M 0 1 01 . 94. 35. 7. 1 . 04 30 M FOLDING ENDURANCE

L221 0 111. 102. 47. 11 . 1.56 30N FOLDING BNDURANCB

L232 0 112. 72. 37. -17. 1.10 30N FOLDING BNDURANCB

L396M 0 115. 94. 48. 2. 1.37 30N FOLDING BNDURANCB

LI 85 0 117. 82. 45. -9. 1.39 30 N FOLDING BNDURANCB

L275 0 117. 104. 53. 11. 1.56 30N FOLDING ENDURANCB

L326N X 131 . 1 56. 87. 53. .75 30N FOLDING BNDURANCB

LI 4 3 213. 122. 149. -10. 3.43 30T FOLDING ENDURANCB

L396S 252. 143. 193. -5. 5.32 30T FOLDING ENDURANCB

L326S 403. lie. 323. -87. 5.62 30 S FOLDING BNDURANCE

L501 467. 116. 381 . -113. 6.10 30T FOLDING BNDURANCE

LI 90

529. 99. 432. -153. 4.16 30S FOLDING BNDURANCB

LI 82

856. 146. 752. -235. 5.20 30S FOLDING BNDURANCE

GMBANS

72. 73. 1.00 95* ELLIPSE: 72. 27. WITH GAMMA - 22 DEGRBES

INSTRUMENT- --CONDITIONS

MIT, NO CBNTRIFUGAL FAN

MIT, NO CENTRIFUGAL FAN

MIT, WITH CENTRIFUGAL FAN

MIT, NO CENTRIFUGAL FAN

MIT, NO CENTRIPUGAL FAN

MIT, NO CENTRIFUGAL FAN

MIT, WITH CBNTRIFUGAL PAN SCHOPPBR, TMI

MIT, NO CENTRIPUGAL FAN KOHLBR-MOLIN

MIT, NO CENTRIPUGAL PAN

MIT, NO CENTRIFUGAL FAN

MIT, NO CENTRIPUGAL PAN

MIT, NO CENTRIFUGAL PAN

MIT, MODIFIED DRIVE TO RBDUCE HEATING

MIT, WITH CBNTRIFUGAL FAN

MIT, NO CENTRIFUGAL FAN

MIT, WITH CBNTRIFUGAL FAN

MIT, NO CENTRIPUGAL PAN

MIT, WITH CENTRIFUGAL PAN

MIT, NO CENTRIFUGAL PAN

MIT, NO CENTRIPUGAL FAN

MIT, CIRCULATING FAN IN CEILING

MIT, MODIFIED DRIVE TO RBDUCE HEATING

MIT. WITH CENTRIPUGAL PAN

MIT, NO CENTRIFUGAL PAN

MIT. WITH CENTRIFUGAL FAN

MIT, NO CBNTRIFUGAL PAN

MIT. NO CENTRIFUGAL FAN

MIT. NO CENTRIPUGAL PAN

MIT, NO CBNTRIFUGAL FAN

MIT, NO CBNTRIPUGAL FAN

MIT. CIRCULATING FAN IN CBILINO

MIT. WITH CENTRIPUGAL FAN

MIT. NO CBNTRIFUGAL FAN

MIT, MODIFIED DRIVE TO RBDUCB HEATING

MIT. NO CENTRIFUGAL FAN

MIT. WITH CENTRIFUGAL FAN

MIT. WITH CBNTRIPUGAL FAN

MIT. NO CBNTRIFUGAL PAN

MIT, NO CENTRIPUGAL FAN

MIT. NO CENTRIFUGAL FAN

MIT, NO CBNTRIFUGAL PAN

MIT. NO CENTRIFUGAL PAN

MIT, NO CENTRIPUGAL FAN

SCHOPPER,

SCHOPPBR,

SCHOPPBR,

SCHOPPBR,

SCHOPPER.

SCHOPPER.

TMI

TMI LBIPZIO

TMI LEIPZIG LEIPZIG

44
DOUBLE

FOLDS

FOLDING ENDURANCE ( MIT ) SAMPLE H35 = 72. DOUBLE FOLDS SAMPLE H47 - 73. DOUBLE FOLDS

DOUBLE FOLDS

45
REPORT NO. 52S TAPPI COLLABORATIVE RBFBRBNCB PROGRAM MARCH 1970 ANALYSIS T30-2 TABLE 1 FOLDING BNDURANCB (MIT) DATA IS LOG( BASE 1 0 ) OF THB DOUBLB FOLD MEASUREMENT

LAB SAMPLE

H35 PRINTING

151 GRAMS PER SQUARE METBR

SAMPLE

H47 PRINTING

84 GRAMS PBR SQUARE MBTBR TEST D. ' 15 CODE MEAN DEV N . DEV SDR R. SDR MEAN DEV N.DBV SDR R. SDR VAR F LAB

LI 001.735 -.066 -.36 .128 .90 1.755 -.088 -1.00 .094 .82 30M 0 LI 00M

LI 00N 1.688 -.112 -.61 .150 1.05 1.759 -.084 -.95 . 089 .78 30N 6 L100N

LI 05 1.422 -.378 -2.06 .146 1.02 1.702 -.141 -1 .60 .195 1 .71 30M 0 LI 05

LI 1 8 1.848 .048 .26 .093 . 65 1.856 .013 .15 .066 .58 3 0D a LI 18

LI 21 1. 581 -.219 -1.19 .120 .84 1.822 -.021 -.24 .087 .76 30M a LI 21

LI 22 1.856 .055 .30 .153 1.07 1.944 .101 1.15 .164 1.45 30M a LI 22

LI 2 4 1.715 -.086 -.47 .128 . 89 1.830 -.013 -.15 .073 .64 30N 6 LI 24

LI 5 0 1.952 .152 .83 .171 1.20 1.706 -.137 -1.56 .179 1.57 30M • LI 50

LI 58 1.446 -.354 -1.93 .288 2.01 1.702 -.140 -1.60 .087 .76 30N a LI 58

LI 59 1.985 .185 1.01 .123 . 86 1.859 .016 .18 .138 1.21 30N 0 LI 59

LI 62 1.771 -.030 -.16 .076 .53 1.907 .064 .73 .089 .78 30M a LI 62

LI 63 1.872 .072 .39 .123 .86 1.807 -.036 -.41 .173 1.52 30N 0 LI 63

LI 82 M 1.994 .194 1.05 .104 .73 1.963 .120 1.37 .087 .76 30M 0 L182M

LI 85 2.043 .243 1.32 .145 1.02 1.907 .064 .72 . 087 .76 3 ON 0 LI 85 L190C 1.708 -.093 -.50 .225 1 . 57 1.867 .024 .27 .117 1.03 30N 0 L190C

L221 2.034 .234 1.27 .090 .63 1.988 .145 1.65 .124 1.09 30N a L221

L2 2 3F 1.985 .185 1.00 .127 . 89 1.887 .044 .50 .070 .61 30M 0 L223F

L2 3 0 1. 861 .061 .33 .149 1.04 1.853 .010 .11 .090 .79 30N a L230

L2 32 2.044 .244 1.33 .082 .57 1.832 -.011 -.12 .149 1 .31 30N a L232

L2 3 6 1.753 -.047 -.26 .160 1.12 1.879 .036 .41 .133 1.17 30N 0 L236

L238A 1.842 .042 .23 .103 .72 1.889 . 046 .52 .078 .69 30N a L238A

L238B 1.705 -.095 -.52 .205 1.43 1.782 -.061 -.69 .119 1.04 30D a L238E

L243 1.973 .173 .94 .136 .95 1.816 -.027 -.31 .079 .69 30D 0 L243

L254 1.761 -.039 -.21 .164 1.15 1.733 -.110 -1.25 .198 1.74 30M 0 L254

L2 62 1.642 -.158 -.86 .079 .55 1.803 -.040 -.45 .125 1.10 30N G L262

L275 2.046 .246 1.34 .144 1.00 2.001 .158 1.80 .130 1.14 30N a L275

L2 7 8 1.892 .091 .50 .189 1.32 1.762 -.081 -.92 .112 .99 30C 0 L278

L279 1.862 .061 .33 .150 1.05 1.923 .080 .91 . 099 .87 30N 0 L279

L2 9 9 1.471 -.329 -1.79 .184 1.28 1.777 -.066 -.75 .123 1.08 30N 0 L299

L321 1. 839 . 039 .21 .213 1. 49 1.932 .089 1.01 .068 .60 30M G L321

L32 6N 2.115 .315 1.71 .051 . 36 2.191 .349 3.96 . 039 .34 30N X L326N

L339 .579 -1.221 -6.64 .183 1.28 1.343 -.500 -5.68 .159 1.39 30N * L339 L366A 1.629 -.171 -.93 .160 1.12 1 . 809 -.034 - • 38 .120 1.06 30N 0 L366A

L376 1.640 -.160 -.87 .137 .96 1.854 .011 .13 .118 1.04 30N 0 L376

L37 8 1.887 .086 .47 .098 . 68 1.920 .077 . 88 .078 .68 30N 0 L373

L388 1.871 .071 .38 .134 .93 1.852 .009 .11 .118 1 .03 30N a L388

L390 1.523 -.277 -1.51 .133 .93 1.767 -.076 -.87 .100 .88 30N a L390 L396M 2.043 .243 1 .32 .127 .89 1.960 .117 1.33 .108 .95 30N e L396M

L531 1.364 -.436 -2. 37 .260 1.81 1.664 -.179 -2.03 .277 2.44 30N 0 L531 L565 1.910 .110 .60 .115 .81 1. 832 -.011 -.13 .105 .92 30N 0 L565

L567 1.960 .160 .87 .166 1.16 2.028 .185 2.10 . 067 .59 30N a L567

L589 1.814 .014 .08 .102 .71 1.742 -.101 -1.15 .133 1.17 30N 0 L589

L599 1.84 3 .042 .23 .118 .83 1.891 .048 .54 . 084 .73 30C a L599

GR. MEAN - 1.800 LOG< 1 0 ) POLD GRAND MEAN - 1 . 843 L0G< 1 0 > POLD TBST DBTBRMINATIONS - 15 SD MEANS - .184 L0G(1O) FOLD AVERAGE SDR - SD OP MBANS - .143 LOG< 1 C ) FOLD

.0 88 LOO< 10 ) POLD AVBRAGE SDR - .11441 LABS

L0O< 10 > IN GRAND

POLD MEANS

LI 4 3 2.252 .452 2.46 • 264 1.99 2.073 .230 2.62 .106 .93 30T LI 43

LI 62 S 2.923 1.123 6.11 .093 • 65 2. 151 . 308 3.51 • 115 1.01 30S L182S

LI 90 D 2.704 .904 4.92 .135 .94 1.991 .148 1.68 .074 .65 30S L190D

L280 1.579 -.221 -1.20 .263 1.84 1. 732 -.111 -1.26 • 114 1.00 3 OK L280

L326S 2. 541 .741 4.03 • 258 1.80 2.049 .206 2.35 .153 1.35 30S L326S

L366B 1. 564 -.236 -1.28 .263 1.63 2.049 .206 2.35 .095 .83 30T L366B

L396S 2.237 .437 2.38 • 411 2.87 2.151 .308 3.50 .059 .52 30T L396S

1-581 2.595 .795 4.32 .300 TOTAL NUMBER OF LABORATORIES REPORTING - 2.10

51 2.049 .206 2.34 . 120

Raw data 1.06 30T L581

The ISO (International Standards Organization) is proposing that MIT folding endurance be reported as the logarithm (to the base

10) of the double fold instead of the double fold as in the past.

(Folding number

in double folds)

log (base 10) of raw data

Analysis T30-1 in this report is the same as in the past with no

changes. This analysis, T30-2, shows the data as the ISO proposes.

This analysis used the raw data reported for T30-1. The raw data

are converted to the logarithm (base 10) as shown in the example to the right, and then the mean of the converted data is calculated

and reported as ISO folding endurance.

46

207 2.32

166 2.22

151 2.18

332 2.52 260 2.41

137 2.14

199 2.30

230 2.36

210 2.31

mean of raw data mean of logs "Folding endurance"
REPORT N0. S2S TAPPI COLLABORATIVE REFERENCE PROGRAM MARCH 1978 ANALYSIS T30-2 TABLE 2 FOLDING ENDURANCE (MIT) DATA IS LOG( BASE 1 0 ) OF THE DOUBLE FOLD MEASUREMENT

LAB C0D£ F MEANS

H35 H47 COORDINATES

MAJOR MINOR

AYG

SDR VAR PR6PS3 L339 * .579 1.343 -1.31

8

-.060 1.34 30 N F9LDING

L531 6 1.364 1.664 -.471 -.022 2.13 30N FOLDING U 05 0 1.422 1.702 -.404 -.006 1 . 37 3 Oil FOLDING

LI 58 0 1.446 1.702 “.380 -.013 1.39 30 N FOLDING

L299 0 1.471 1.777 = .332 .049 1.18 30N FOLDING

L390 0 1 .523 1.767 “.286 .021 .90 30N FOLDING

L3 66B 1.564 2.049 -.153 .274 l .33 3 OT FOLDING

L2 80 1.579 1.732 -.245 -.030 1.42 30K FOLDING

LI 21 0 1.581 1.822 -.21 3 .053 .80 30 M FOLDING

L366A 0 1.629 1 . 809 -.172 .026 1.09 30 N FOLDING

L3 76 0 1.640 1.854 -.147 . 064 1 .00 30 N FOLDING

L262 0 1.642 1.803 -.ri62 .016 .82 30 N FOLDING

Li 00N 0 1.688 1.759 -.134 -.041 .91 30N FOLDING

L238B 0 1 . 705 1.782 “.110 -.025 1.24 30D FOLDING

Li 90C 0 1.708 1 .867 -.079 .054 1.30 30N FOLDING

Li 2 4 0 1 .715 1.830 -.085 . 017 .77 3 ON FOLDING

Li 00 M 0 1.735 1.755 -.092 -.061 .86 30M FOLDING

L236 0 1.753 1.879 -.032 • 050 1.14 30 N FOLDING

L254 0 1.761 1.733 -.074 -.091 1.44 3 0 M FOLDING

Li 62 0 1.771 1.907 -.007 .070 .66 30M FOLDING

L589 0 1 .814 1.742 -.021 -. iOO . 94 SON FOLDING

L321 0 1.839 1.932 .066 .070 1 .04 30 M FOLDING

L238A 0 1.842 1.889 .055 . 029 .70 30N FOLDING

L59 9 0 1.843 1 . 891 .056 .031 .78 30C FOLDING

Li 1 8 0 1 . 848 1 .856 .049 -.004 .62 30 D FOLDING

Li 2 2 0 1 . 85 6 1.944 .0 86 .077 1.26 30 M FOLDING

L2 30 0 1. 861 1.853 . 061 -.Oil .92 30N FOLDING

L279 0 1.862 1.923 .085 .055 .96 30 N FOLDING

L5 8 8 0 1.871 1.852 .070 -.01 5 .98 30N FOLDING

LI 63 0 1 .872 1.807 .055 -.058 1.19 30 N FOLDING

L378 0 1.887 1.920' .107 . 044 .68 30 N FOLDING

L2 7 8 0 1.892 1,762 .059 -.107 1.15 30C FOLDING

L565 0 1.910 1.832 .099 - • C 48 . 86 30 N FOLDING

Li 5 0 * 1.952 1.706 .097 -.180 1.38 30M FOLDING

L567 0 1 .960 2.028 .213 .120 .87 30N FOLDING

L2 4 3 6 1.973 1.816 .154 -.0 84 .82 30 D FOLDING

L223F 0 1.965 1.887 . 1 89 -.021 .75 30M FOLDING

Li 59 0 1 .985 1.859 .180 -.047 1 .04 30 N FOLDING

Li 82M 0 1.994 1.963 .223 .048 .74 30M FOLDING

L221 0 2.034 1.988 .269 .058 . 86 30N FOLDING

L396M 0 2.043 1.960 .2 68 .029 .92 30N FOLDING

Li 85 0 2.043 1.907 .250 -.022 o 89 30N FOLDING

L2 3 2 0 2.044 1.832 .226 -.092 .94 30 N FOLDING

L27 5 0 2.046 2.001 .2 85 . 066 1 . 07 30 N FOLDING

L3 2 6N X 2.115 2.191 .414 .222 .35 30 N FOLDING

L3S6S 2.237 2.151 .515 .143 1.70 30T FOLDING

Li 43 2.252 2.073 .503 .065 1 .46 30 T FOLDING

L326S 2.541 2.049 .767 - .055 1.58 3 OS FOLDING

L581 2.595 2. 049 .61 8 -.073 1 .58 SOT FOLDING

Li 9 0 D 2.704 1.991 .901 -.16? . 79 30S FOLDING

L182S 2.923 2.151 1.161 -.087 a 63 30S FOLDING

GMEANS1.800 1.843

95% ELLIPSE: .500 .162

1 .00 WITH GAMMA “ 19 ]

"TEST INSTRUMENT® ““CONDITIONS

RANCE, MIT, NO CENTRIFUGAL PAN

RANCE , MIT, NO CENTRIFUGAL FAN

RANCE, MIT, WITH CENTRIFUGAL FAN

RANCE, MIT. NO CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCH, SCH6PPER, TMI RANCE, KOHLER- MOLIN

RANCE, MIT, WITH CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE. MIT, MODIFIED DRIVE TO REDUCE HEATING

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, WITH CBNTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, WITH CENTRIFUGAL FAN

RANCE, MIT, WITH CENTRIFUGAL FAN

RANCE, Mir, NO CENTRIFUGAL FAN

RANCE, MIT, WITH CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, CIRCULATING FAN IN CEILING

RANCE, MIT. MODIFIED DRIVE TO REDUCE HEATING

RANCE, MIT, WITH CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, CIRCULATING FAN IN CEILING

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, WITH CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, MODIFIED DRIVE TO REDUCE HEATING

RANCE, MIT, WITH CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, WITH CBNTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, MIT, NO CENTRIFUGAL FAN

RANCE, SCHOPPER, TMI RANCE, SCHOPPER, TMI

RANCE, SCHOPPER, LEIPZIG

RANCE, SCHOPPER, TMI

RANCE, SCHOPPER, LEIPZIG

RANCE, SCHOPPER, LEIPZIG

47
LGG(IO)

FOLD

FOLDING ENDURRNCE (MIT)

SAMPLE H35 = 1.80 L0O(1O) FOLD SAMPLE H47 = 1.84 L0G(1O) FOLD

48
REPORT NO. S2S TAPPI COLLABORATIVE RBFERENCE PROGRAM MARCH 1573 ANALYSIS T35-1 TABLE 1 GURLEY STIFFNESS

RESULTS EXPRESSED IN STANDARD GURLEY UNITS: MILLIGRAMS FOR A 1X3 INCH SPECIMEN (ACTUAL LENGTH 3.5 INCHES)

LAB SAMPLB

H68 PRINTING

96 GRAMS PBR SQUARE MBTER

SAMPLE

H65 PRINTING

106 GRAMS PER SQUARE METER TEST D. • 10 C0DB MEAN DEV N.DEV SDR R. SDR MEAN DBV N. DEV SDR R. SDR VAR F LAB

LI 00 493. 36. 1.28 20. . 85 400. 3. .11 13. .71 35G a LI 00

LI 18 450. -7. -.23 23. .96 379. -18. -.75 16. .86 35G 6 LI 1 8 LI 21 504. *7. 1.65 48. 2,03 454. 57. 2.34 45. 2.42 35G a LI 21

LI 2 2 460. 3. .09 26. 1.12 378. -19. -.77 21 . 1.11 35G a LI 22

LI 32 463. 6. .21 34. 1.46 409. 12. .49 44. 2.33 35G a LI 32 H 39 444. -13. -.46 19. . 79 394. -3. -.12 15. .82 35G a LI 39

LI 46 464. 7. .26 20. . 86 372. -25. -1.05 19. .99 35G 0 LI 48

LI 5 3 452. -5. -.17 21. .90 414. 16. .68 9. .46 35G a LI 53

LI 59 412. -45. -1.58 36. 1.52 385. -13. -.52 32. 1.69 35G e LI 59

LI 6 2 408. -49. -1.74 26. 1.09 355. -43. -1.75 12. .62 35G 0 LI 62

LI 63 440. -17. -.60 31. 1.31 376. -21. -.88 32. 1.71 35G a LI 63

LI 83 513. 57. 1.99 17. .73 422. 25. 1.02 29. 1 .56 3 5G a LI 83

LI 90C 478. 21. .74 16. . 69 430. 32. 1 . 34 13. .68 35G a L190C

LI 95 465. 8. .28 23, 1.00 398. 1 . .02 14. .75 35G a LI 95

L2 2 3 4 33. -24. -.83 12. . 49 372. -25. -1 .02 11 . .61 35G a L22 3 L224 474. 17. .60 21 . . 89 398. 1 . .04 23. 1.20 35G a L2 2 4 L232 430. -27. -.96 16. .70 395. -2. -.07 23. 1 .23 35G a L2 32 L2 3 6 383. -74. -2.60 39. 1.68 350. -47. -1 .95 12. .63 35G * L2 36 L241 479. 22. .76 29. 1.23 427. 30. 1.25 24. 1.30 35G a L2 4

1

L249 437. -20. -.69 17. .70 383. -15. -.60 11 . .58 35G a L249

L2 54 401. -56. -1.97 11. . 47 344. -53. -2.18 11 . .58 35G a L254

L2 6 0 463. 6. .22 16. .67 416. 19. .79 9. .51 35G a L260

L26 8 461 . 4. .15 14. .59 397. -0. -.01 8. .43 35G 9 L268

L291 461. 4. .15 12. .52 390. -7. -.29 16. .83 35G a L291 L297 414. -43. -1.50 21. . 89 366. -31. -1.29 9. .48 35G a L297

L30 8 455. -2. -.06 13. .54 408. 10. .43 28. 1 .49 35G a L308

L321 465. 8. .27 32. 1.35 392. -5. -.22 19. 1 .00 35G a L3 21 L3 5 6 446. -11 . -.39 21. .91 372. -25. -1.02 11 . .61 35G a L356

L376 460. 4. .12 36. 1.54 423. 26. 1.07 17. .92 35G 0 L376

L378 467. 10. .34 18. .78 408. 11 . .45 15. .79 35G a L378

L382 476. 19. .66 42. 1.77 400. 3. .12 23. 1.21 3 5G a L382

L390 458. 1. .05 29. 1,25 407. 10. .40 30. 1.60 35G a L390 L396 469. 12. .43 13. .54 401. 4. .17 14. .73 35G 0 L396 L567 482. 25. .87 24. 1.00 41 2. 15. .63 23. 1.23 35G a L567

L571 464 . 8. .27 16. .67 419. 22. .90 12. .64 35G a L571 L575 4e4. 27. .94 34. 1.45 429. 32. 1.31 15. .78 35G a L575

L600 497. 40. 1.42 41. 1.72 421. 23. .97 10. .51 35G 0 L600

GR. MEAN • SD MEANS • 457.

28. GURLEY UNITS GURLEY UNITS

AVERAGE SDR • 24.

GRAND MEAN - SD OF MEANS • GURLEY UNITS

397.

24. GURLEY UNITS GURLBY UNITS AVBRAGE SDR - 19.

rEST DBTERMINATI9NS - 10

37 LABS IN GRAND MEANS

GURLEY UNITS

L213 465. 8. .29 43. TOTAL NUMBER OF LABORATORIES REPORTING «

Best Values: H68 460 + 5Q Gurley units

1.83

38 427. 30. 1.23 32. 1.72 35H L21 3

H65 400 + 30 Gurley units

49
-I

REPORT NO. 52S TAPPI COLL ABORATI VB REFERENCE PBOOBAK ItABCH 1978 ANALYSIS T35-1 TABLB 2 OCRLEY STIFFNB SS RESULTS EXPRESSED IN STANDARD GUBLEY UNITS: MILLIGRAMS FOR A 1X3 INCH SPBCI MBN (ACTUAL LBNGTH 3.5 INCHES >

LAB NEANS COORDINATES

C0DB F H68 H65 MAJOR NIN0R

L2 3 6 • 383 • 350. -87. 10. L254 0 401. 344. -77. -5.

LI 6 2 0 408. 355. -65. -2.

LI 59 0 412. 385. -43. 19. L297 0 414. 366. -53. 3. L232 0 430. 395. -22. 16. L223 0 433. 372. -34. -4. L2*9 0 437. 383. -24. 1.

LI 63 0 440. 376. -27. -6.

Li 39 0 444. 394. -12. 6. L356 0 446. 372. -24. -12.

Li 18 0 450. 379. -1 7. -10.

LI 53 0 452. 414. 7. 16. L30 8 0 455. 408. 5. 9. L39 0 0 458. 407. 7. 7.

LI 2 2 0 460 . 378. -10. -16. L376 0 460. 423. 19. 18. L29

0 461 . 390. -1 . -8. L268 6 461. 397. 3. -3.

LI 32 0 463. 409. 12. 5. L260 0 463. 41 6. 17. 11.

LI 4 8 0 464. 372. -11 . -24.

L571 0 464. 419. 20. 12. L321 0 465. 392. 2. -9.

LI 95 0 465. 398. 7. -5.

L21 3 465. 427. 25. 18. L37 8 0 467. 408. 14. 2. L39 6 0 469. 401 . 12. -5.

L2 2 4 0 474 . 398. 14. -10. L382 0 476. 400. 16. -10. L190C 0 478. 430. 37. 12. L241 0 479. 427. 36. 10. L56 7 0 482. 412. 29. -4.

L57 5 0 484 . 429. 41 . 7.

LI 0 0 0 493. 400. 30. -21 . L600 0 4 97 . 421 • 46. -8 . LI 21 0 504 . 454. 72. 14.

LI 83 0 513. 422. 59. -17. GMEANS

457. 397. 95% ELLIPSB: 92. 29.

AVO

R. SDR VA.fi PROPBRTY— -TEST INSTRUM1

1.15 35G STIFFNB SS. GURLEY ( UNITS:

.53 35G ST IFFNBSS

GURLEY ( UNITS;

.85 35 G STIFFNESS, OURLBY ( UNITS:

1.61 35G STIFFNBSS, GURLEY ( UNITS:

.69 35G STIFFNESS, GURLBY ( UNITS:

.96 35G STIFFNESS, GURLEY C UNITS:

.55 35G STIFFNESS, GURLEY ( UNITS:

.64 35G STIFFNBSS. GURLEY ( UNITS:

1.51 35G STIFFNESS. GURLBY ( UNITS:

.81 35G STIFFNBSS, GURLEY ( UNITS:

.76 35G STIFFNBSS, GURLEY ( UNITS

.91 35G STIFFNBSS, GURLBY ( UNITS:

.68 35G STIFFNBSS, GURLEY C UNITS:

1.02 35G STIFFNESS, GURLBY ( UNITS:

1.42 350 STIFFNBSS. GURLEY ( UNITS:

1.12 35G STIFFNBSS. GURLBY ( UNITS:

1.23 35G STIFFNESS. GURLBY ( UNITS:

.68 35G STIFFNBSS. GURLBY ( UNITS

.51 35G STIFFNBSS, GURLBY ( UNITS:

1 .89 35G STIFFNBSS. GURLEY ( UNITS:

.59 35G STIFFNBSS, GURLEY ( UNITS:

.93 35G STIFFNESS. GURLEY ( UNITS:

.65 35G STIFFNBSS, GURLEY ( UNITS:

1.18 35G STIFFNESS, GURLEY ( UNITS:

.88 35G STIFFNBSS, GURLEY ( UNITS: 1.77 35 H STIFFNESS. GURLEY ( UNITS:

.79 350 STIFFNESS, GURLBY ( UNITS

.64 35G ST IPFNBSS

GURLEY ( UNITS:

1.05 3£G STIFFNBSS. GURLBY C UNITS

1.49 35G STIFFNESS. GURLBY ( UNITS:

.68 35G STIFFNBSS. GURLEY ( UNITS:

1.27 350 STIFFNESS. OURLBY ( UNITS:

1.11 35G STIFFNBSS, GURLEY ( UNITS:

1.12 350 STIPPNBSS, GURLBY ( UNITS:

.78 350 STIPFNESS. GURLBY ( UNITS:

1.12 350 STIFFNBSS. GURLEY ( UNITS

2.23 350 STIFFNESS. GURLBY ( UNITS:

1.14 350 STIFFNESS. GURLBY ( UNITS:

1.00 WITH GANNA • 39 DEGBBES

'-—CONDITIONS

NO/1 X3 •ACTUALLY 3.5- TBST PIBCB

NG/1X3 -ACTUALLY 3.5- TEST PIECE

NG/1 X3 -ACTUALLY 3.5- TEST PIBCB

NG/1 X3 -ACTUALLY 3.5- TEST PIBCB ) MG/1 X3 -ACTUALLY 3.5- TBST PIBCB )

MG/1 X3 -ACTUALLY 3.5- TEST PIBCB

MG/1 X3 -ACTUALLY 3.5- TBST PIECB

MG/1 X3 -ACTUALLY 3.5- TEST PIBCB

MG/1 X3 -ACTUALLY 3.5- TBST PIBCB > MG/1 X3 -ACTUALLY 3.5- TEST PIECE

MG/1 X3 -ACTUALLY 3.5- TEST PIBCB

MG/1 X3 -ACTUALLY 3.5- TEST PIBCB > MG/1 X3 -ACTUALLY 3.5- TEST PIECE > MG/1 X3 -ACTUALLY 3.5- TEST PIECE ) MG/1 X3 -ACTUALLY 3.5- TEST PIBCB >

MG/1 X3 -ACTUALLY 3.5- TEST PIBCB

MG/1 X3 -ACTUALLY 3.5- TBST PIBCB

MG/1 X3 -ACTUALLY 3.5- TBST PIECB

MG/1 X3 -ACTUALLY 3.5- TEST PIBCB ) MG/1 X3 -ACTUALLY 3.5- TEST PIBCE

MG/1 X3 -ACTUALLY 3.5- TBST PIECB

MG/1 X3 -ACTUALLY 3.5- TEST PIBCB

MG/1 X3 -ACTUALLY 3.5- TEST PIECB

MG/1 X3 -ACTUALLY 3.5- TBST PIBCB

MG/1X3 -ACTUALLY 3.5- TBST PIBCE > MG/1X3 TBST PIBCB), 20 C. 65* RH

MG/1 X3 -ACTUALLY 3.5- TBST PIECB

MG/1 X3 -ACTUALLY 3.5- TBST PIECE ) MG/1 X3 -ACTUALLY 3.5- TEST PIECE > MG/1 X3 -ACTUALLY 3.5- TBST PIECE)

MG/1 X3 -ACTUALLY 3.5- TBST PIBCE

MG/1 X3 -ACTUALLY 3.5- TEST PIBCE ) MG/1 13 -ACTUALLY 3.5- TBST PIECB > MG/1 X3 -ACTUALLY 3.5- TBST PIBCE

MG/1 X3 -ACTUALLY 3.5- TEST PIBCE > MG/1X3 -ACTUALLY 3.5- TBST PIECE > MG /I X3 -ACTUALLY 3.5- TBST PIBCE ) MG/1 X3 -ACTUALLY 3.5- TEST PIECE

50
GURLEY

UNITS

300

320

340

360

380

400

420

440

460

480

STIFFNESS, GURLEY

SAMPLE H68 = 457. GURLEY UNITS SAMPLE H65 = 397, GURLEY UNITS

GURLEY UNITS

51
REPORT NO. 52S TAPPI COLLABORATIVE REFERENCE PROGRAM MARCH 197S ANALYSIS T36-1 TABLE I TABER STIFFNESS

TAPPI STANDARD T489 OS-76. RESULTS EXPRESSED IN GRAM CENTIMETERS

LAB SAMPLE

B63 XRAFT ENVELOPE124 GRAMS PER SQUARE METER

SAMPLE

J09 PRINTING

149 GRAMS PER SQUARB METBR TEST D. ' 10 CODE MEAN DEV N.DEV SDR R. SDR MEAN DEV N.DBV SDR R.SDR VAR F LAB

LI 0717.86 -1.03 -1.29 .53 .71 16.03 -1 .30 -1.55 .88 1.03 36T 0 L107A

LI 2 3 18.30 -.59 -.74 .48 .65 10.00 -7.33 -8.76 .67 .78 36T • LI 23

Li 26 18.25 -.64 -.80 .35 . 48 16.95 -.38 -.46 .50 .58 36T 0 LI 26

Li A 9 19.90 1.01 1.26 .74 1.00 18.40 1.07 1.28 .84 .99 36T a LI 49

Li 50 18.95 .06 .08 .60 . 81 17.00 -.33 -.40 1.18 1.38 36T a LI 50

Li 58 19.00 .11 .14 1 .29 1.74 17.00 -.33 -.40 2.30 2.70 36T 0 LI 58

LI 63 18.40 -.49 -.61 .91 1.23 17.85 .52 .62 .47 .56 36T 0 LI 63

Li 73B 18.03 -. 86 -1.07 .74 1.01 16.55 -.78 -.93 .63 .73 36T 0 L173B

Li 76 21.25 2.36 2.95 1.30 1.75 19.15 1.82 2.17 .97 1.14 36T * LI 76

Li 82 18.92 .03 .04 .58 .78 18.00 .67 .80 1.60 1 .87 36T 0 LI 82 L207 18.76 -.13 -.16 .42 . 57 17.36 .03 .03 .89 1 .05 36T 0 L207

L228 17.70 -1.19 -1 .49 .63 . 85 16.10 -1.23 -1.47 .46 .54 36T a L228

L2 A 2 20.51 1.63 2.03 1.21 1.64 19.02 1.69 2.02 1.15 1 .35 36T a L242

L243 18.75 -.14 -.17 .54 .73 16.20 -1.13 -1.35 .48 .57 36T a L243

L2 60 19.30 .41 .51 .58 .79 18.14 .81 .97 .56 .65 36T a L260

L262 18.75 -.14 -.17 .72 .97 17.75 .42 .50 .54 .63 36T 0 L262

L26 8 18.65 -.24 -.30 .63 . 85 17.05 — .28 -.34 .28 .33 36T a L268

L273 18.30 -.59 -.74 .48 . 65 16.40 -.93 -1.11 .84 .99 36T a L273

L281 19.10 .21 .26 .49 .66 17.92 .59 .71 .73 .85 36T a L281

L2 9 0 18.30 -.59 -.74 .95 1.26 16.90 -.43 -.51 .74 .87 36T a L290

L31 8 19.15 .26 .33 .68 . 92 17.22 -.•1

-.13 .38 .45 36T 0 L31 8 L321 19.11 .22 .28 1.04 1.40 17.10 -.23 -.28 1.18 1.39 36T 6 L321

L32 A 18.70 -.19 -.24 .45 .61 17.40 .07 .08 .91 1 .07 36T a L324

L33 9 18.49 -.40 -.50 .68 .92 16.67 -.66 -.79 .76 .90 36T a L339

LA 42 22.60 3.71 4.64 1.62 2. 18 19.38 2.05 2.45 1.31 1 .54 36T * L442 L570 19.70 .81 1.01 2.00 2.71 17.10 -.23 -.28 .99 1.17 36T 0 L570

L580 18.43 -.49 -.61 .52 . 70 18.00 .67 .80 1.15 1.35 36T a L580

GR. MEAN - 18.89 TABER UNITS GRAND MEAN * 17.33 TABER UNITS TBST DETERMINATIONS a o SD MEANS - .80 TABER UNITS AVERAGE SDR

SD OF MBANS

- .74 TABER UNITS

* . 84 TABBR UNITS AVBRAGE SDR - .85 25 LABS IN GRAND

TABER UNITS

MEANS

L250 17.95 TOTAL NUMBER OF ] -.94 — i • 1 7 .72 LABORATORIES REPORTING -

• 90

28 16.00 -1.33 -1.59 .67 .70 36U L250

Best Values: B63 18.8 + 1.1 Taber units J09 17.2 + 1.1 Taber units

The following laboratories were omitted from the grand means because of extreme test results: 123, 442

52
HEPORT NO. 52S TAPPI COLLABORATIVE REFERENCE PROGRAM ANALYSIS T36-1 TABLE 2 TABER STIFFNESS

TAPPI STANDARD T489 OS-76, RBSDLTS EXPRESSED IN GRAM CBNTI MBTBRS

LAB MBAN S COORDINATES AVG

CODE P B63 JO 9 MAJOR MINOR R. SDR VAR PRaPEHTY— -TEST

L22 8 0 17.70 16.10 -1.71 .02 .70 36T STIFFNESS* TABBR

LI 07

A

a 17.86 16.03 -1.65 -.14 .87 36T STIFFNESS* TABER

L250 17.95 16. 00 -1.61 -.23 .88 360 STIFFNBSS* TABBR* L173B a 18.03 16.55 •1.16 .09 .87 36T STIFFNESS* TABER

LI 2 6 a 18.25 16. 95 -.72 .20 .53 36T STIFFNBSS. TABBR

L29 0 a 18. 30 16.90 -.72 .13 1.07 36T STIFFNESS. TABBR

L273 a 18.30 16.40 -1.08 -.21 .82 36T STIFFNESS. TABER

LI 2 3 0 18.30 10.00 -5.74 -4.60 .72 36T STIFFNESS* TABBR

L580 0 18.40 1 8.00 .15 .82 1.03 36T STIFFNESS, TABER

LI 6 3 a 18.40 17.85 .04 .71 .89 36T STIFFNESS* TABER

L3 3 9 a 18.49 16.67 -.75 -.16 .91 36T STIFFNESS* TABER

L2 6 8 a 18.65 17.05 -.37 -.02 .59 36T STIFFNBSS* TABER

L324 a 18.70 17.40 -.08 .19 .84 36T STIPFNESS. TABER

L262 a 18.75 17.75 .21 .39 .80 36T STIFFNBSS. TABER

L243 a 18.75 16.20 -.92 -.67 .65 36T STIFFNBSS* TABER

L207 a 18.76 17.36 -.07 .11 .81 36T STIFFNESS. TABER

LI 82 0 18.92 18.00 .51 .44 1.33 36T STIFFNESS. TABER

LI 50 a 18.95 17.00 -.20 -.27 1.10 36T STIFFNESS, TABER

LI 58 a 19.00 17.00 -.16 -.31 2.22 36T STIFFNBSS* TABER

L26I a 19.10 17.92 .58 .25 .76 36T STIFFNBSS* TABBR

L32 1 a 19.11 17.10 -.02 -.32 1.39 36T STIFFNESS. TABER

L31 8 0 19.15 17.22 .10 -.26 .68 36T STIFFNESS, TABER

L2 60 0 19.30 18.14 .87 .26 .72 36T STIFFNESS* TABBR

L57 0 0 19.70 17.10 .39 -.75 1.94 36T STIFFNESS* TABER

LI 49 a 19.90 18.40 1.47 -.00 .99 36T STIFFNESS* TABER

L242 a 20.51 19.02 2.35 -.02 1.50 36 T STIFFNBSS. TABER

LI 76 * 21.25 19.15 2.94 -.47 1 .46 36T STIFFNESS* TABER

L442 * 22.60 19.38 4,04 -1.29 1.86 36T STIFFNBSS* TABER

GtCEANS : 18.89 17.33 1.00 95% ELLIPSE: 2.92 1.01 WITH GAMMA • 46 DEGREES

MARCH 1978

53
TRBER

UNITS

15.0

16.0

17.0

18.0

19.0

20.

STIFFNESS , TABER

SAMPLE B63 = 18.9 TABER UNITS SAMPLE J09 = 17-3 TABER UNITS

TABER UNITS

54
REPORT NO. 52S TAPPI COLLABORATIVE REFERENCE PROGRAM ANALYSIS T49-I TABLE 1 SURFACE PICK STRENGTH, IGT

MARCH 1979

SAMPLE PRINTING SAMPLE PRINTING TEST E>. * 4 LAB H80 64 GBAMS PER SQUARB METER H76 91 GRAMS PER SQUARE METEB CODE MEAN DEV N, DEV SDB R. SDR MEAN DEV N. DEV SDR R. SDR VAR F LAB

LI 07 77.0 6.4 .21 • 0 .00 33 • 7 -20.3 -.87 3*2 1.00 491 0 LI 07

LI 21 660.0 589.4 19.16 .0 .00 543.7 489.7 20.94 78.2 24.47 49F 0 LI 21

LI 22 47.6 -23.0 -.75 2.1 . 68 48.6 -5.5 -.23 1.3 .39 49Q 0 LI 22

LI A 9 83.5 12.9 .42 2. 6 . 85 52.1 -1.9 -.08 5.5 1 .73 49L 0 LI 49

LI 62 1 20.1 -50.6 -1.64 .8 .27 16.4 -37.7 -1 .61 1.8 .57 49Q 0 LI 82

1

LI 6 3 NO DATA REPORTED FOR SAMPLE H80 44.4 -9.7 -.41 1.3 .42 49Q M LI 83

LI 90C 55.5 -15.1 -.49 1.7 .55 59.5 5.4 .23 2.9 .90 49T 0 L190C

L207 128.0 57.4 1.66 9.6 3. 06 97.0 42.9 1.83 1.4 .44 491 0 L207

L242 37.2 -33. 5 -1.09 2.8 . 89 NO DATA REPORTED FOR :SAMPLE H76 49P M L242

L280 3.7 -66.9 -2.18 .0 .00 3.0 -51.0 -2.18 .3 .10 49U 0 L280

L291 65.5 -5.1 -.17 5.1 1.63 65.1 11.1 .47 4.2 1.30 491 0 L291

L38 2 66.0 -4.7 -.15 2.7 .86 NO DATA REPORTED FOR !SAMPLE H76 491 M L382

L388 167.4 96.8 3.15 6.2 1.99 108.0 53.9 2.31 8. 8 2.76 49Q 0 L388

L484 96.3 25.7 .64 4.6 1.46 72.8 18. 8 .80 7.4 2.31 49P 0 L4 84

L6 0 0 62.2 -8.4 -.27 1.6 . 50 41.4 -1 2.7 -.54 1.1 .35 49Q 0 L600

GR. MEAN • 70.6 KP CM/SEC GRAND MEAN 54.1 KP CM/SEC TEST DETERMINATIONS * 4 SD MEANS 30.8 KP CM/SEC SD OF MEANS - 23.4 KP CM/SBC 9 LABS IN GRAND MEANS AVERAGE SDR - 3.1 KP CM/SEC AVERAGE SDR - 3.2 KP CM/SBC TOTAL NUMBER OF LABORATORIES REPORTING • 15

The following laboratories were omitted from the grand means because of extreme test results: 388.

The following laboratories were omitted from the grand means because the values were outside the range of the instrument: 121, 280.

55
REPORT NO. 523 TAPPI COLLABORATIVE RBFBRBNCB PROGRAM ANALYSIS T50-1 TABLB I SURFACB PICE STRBNGTH. VAX NUMBER

TAPPI STANDARD TA59 OS-75. SURFACE STRBNGTH OP PAPER (VAX PICK TBST

MARCB 1 978

SAMPLE PRINTING SAMPLE PRINTING TEST D. ' 5 LAB H80 84 GRAMS PER SQUARE METER H76 91 GRAMS PER SQUARE METER

C0DB MEAN DEV N.DBV SDR R. SDR MEAN DBV N. DEV SDR R. SDR VAR F LAB

LI 0 5 11.00 -.02 -.02 .71 1.76 8. 80 .17 .13 .84 1 .35 SOW 0 Li 05

Li 22 10.00 -1.02 -.90 .00 . 00 8.00 -.63 -.48 .00 .00 50 W 6 Li 22

LI 58 11.40 .38 .34 .55 1.37 7.80 -.83 -.64 .45 .72 50W 0 LI 58

Li 62 12.00 .98 . 86 .00 . 00 7.00 -1.63 -1.26 .00 .00 50 W 0 LI 62

Li 73

11.00 -.02 -.02 • 00 . 00 7.40 -1.23 -.95 .55 .88 50W 0 Li 73 A

LI 82W 10.60 -.42 -.37 .55 1.37 9.40 .77 .59 .55 .88 sow 0 Li 82 V

Li 83 11 .40 .38 .34 .89 2.23 9.20 .57 .44 .84 1.35 SOW 0 Li 8?

Li 9 5 11.00 -.02 -.02 .00 .00 8.20 -;43 -.33 .45 .72 50 W 0 Li 95

L21 3 10.80 -.22 -.19 .45 1.12 8. 60 -.03 -.02 .55 .88 sow 0 L21 3 L2 2 5 13.00 1 .98 1.75 • 00 .00 9.60 .97 .75 .55 .88 50 W e L225

L22 8 9.60 -1.42 -1.25 .55 1.37 7.40 -1.23 -.95 .55 .88 50 W 0 L228

L230 11 .00 -.02 -.02 • 00 .00 8.00 - « 63 -.48 .00 .00 50W 0 L230

L2 3 6 13.00 1 .98 1.75 • 00 .00 11.20 2.57 1.98 .45 .72 50 W 0 L236

L2 43 8.60 -2.42 -2.13 .55 1.37 8.20 -.43 -.33 .84 1.35 50W 0 L243

L339 10.60 -.42 -.37 1.14 2. 85 10.80 2.17 1.67 2.59 4.18 SOW 0 L339

L366 12.20 1.18 1.04 .84 2.09 10.20 1.57 1.21 .84 1.35 SOW 0 L366

L37 8 11 .20 .18 .16 .45 1.12 7.40 -1.23 -.95 .55 .88 50 W 0 L378

L3 9 0 8.80 -2.22 -1.96 1 .30 3.25 7.40 -1.23 -.95 .89 1 .44 50 W 0 L390

L561 12.00 .98 . 86 .00 . 00 8.80 .17 .13 1 .10 1 .77 50W 0 L561 L564 11.00 -.02 -.02 .00 .00 10.80 2.17 1.67 .45 .72 50 W 0 L564

L55 7 11.20 .18 .16 .45 1.12 7.00 -1.63 • CM <0 . 00 .00 50 W 0 L567

GS • MEAN - 11.02 WAX NUMBER GRAND MEAN - 8.63 WAX NUMBER TEST DETERMINATIONS 5 SD MEANS - 1.13 WAX NUMBER SD 0F MEANS 1.30 VAX NUMBER 21 LABS IN GRAND MEANS

AVERAGE SDR - .40 VAX NUMBER AVERAGE SDR - .62 WAX NUMBER TOTAL NUMBER OF LABORATORIES REPORTING * 21

Best Values: H80 11.0 + 1.9 wax number

H76 9.0 + 1. 8 wax number

56
REPORT NO. 52S TAPPI COLLABORATIVE REFERENCE PR0ORA1I MARCH 1978 ANALYSIS T50-1 TABLB 2 SURFACE PICK STRENGTH, VAX NUMBER

TAPPI STANDARD T459 OS-75, SURFACB STRENGTH OF PAPER (VAX PICK TEST)

LAB MEANS caaRDI NATES AVG CODE F H80 H76 MAJOR MINOR R. SDR

L243 a 8.60 8.20 -1 . 76 1.71 1.36

L3 9 0 a 8.80 7.40 -2.29 1.08 2.35

L2 2 8 a 9.60 7.40 -1.83 .43 1.13

LI 22 a 1 0.00 8. 00 -1.11 .46 . 00 L339 a 1 0.6 0 10.80 1.52 1.61 3.51 L182W a 10.60 9.40 . 38 .79 1.13

L21 3 a 10.80 8.60 -.15 .16 1.00

L56 4 a 11.00 10. 80 1.75 1.28 .36

Li 95 a 11.00 8.20 -. 36 -.23 .36

Li 7 3 A 0 11.00 7.40 -1.01 -.70 .44

Li 05 0 11 .00 8. 80 .13 .12 1.56

L230 a 11.00 8.00 -.52 -.35 .00

L55 7 a 11.20 7.00 -1.22 -1.10 .55

L3 7 8 a 11.20 7.40 -.89 -.86 1.00

Li 83 a 11.40 9.20 .69 .02 1.79

LI 5 8 e 11.40 7.80 -. 45 -.79 1.04

L56 i a 12.00 8.80 . 71 -. 70 . 88

Li 62 a 12.00 7.00 -.75 -1.75 .00

L3 6 6 a 12.20 10.20 1.97 -.04 1.72

L2 3 6 a 13.00 11.20 3.24 -.11 .36

L2 2 5 0 13.00 9.60 1.95 1 0<* .44 GMEANS

11.02 8. 63 1.00 95% ELLIPSE: 3.95 2.53 WITH

VAR PROPERTY--

TEST INSTRUMENT-—CONDITIONS

50W SURFACE PICK STRENGTH, WAX ( TAPPI T459 0S75 ) 50 W SU RF ACE PICK STRENGTH, WAX < TAPPI T4 59 0S75 i 50 W SURFACE PICK STRENGTH, WAX ( TAPPI T459 0S75> SOW SURFACE PICK STRENGTH, WAX ( TAPPI T4 59 0S75 ) 50W SURFACE PICK STRENGTH. WAX ( TAPPI T4 59 0S75 )

50 W SUPFACB PICK STRBNGTH. WAX ( TAPPI T4 59 0S7S ) 50 W SURFACE PICK STRENGTH, WAX ( TAPPI T4 59 0S75)

50 W SURFACE PICK STRENGTH, WAX ( TAPPI T4 59 0S75 ) 50 W SURFACE PICK STRBNGTH, WAX ( TAPPI T4 59 0S75 ) 50 W SURFACE PICK STRENGTH. WAX ( TAPPI T4 59 0S75 ) 50W SURFACB PICK STRENGTH, WAX ( TAPPI T459 OS75 ) 50 W SURFACE PICK STRBNGTH, WAX ( TAPPI T4 59 0S75 ) 50W SURFACE PICK STRENGTH, WAX ( TAPPI T459 0S75 ) 50 W SURFACE PICK STRENGTH. WAX ( TAPPI T4 59 0S75 > 50 W SURFACB PICK STRBNGTH. WAX ( TAPPI T459 0S75 )

50 W SURFACE PICK STRBNGTH, WAX ( TAPPI T4 59 3S75 ) 50 W SURFACE PICK STRENGTH, WAX ( TAPPI T4 59 0S75 ) 50 W SURFACE PICK STRENGTH. WAX ( TAPPI T4 59 0S75 > 50 W SURFACB PICK STRBNGTH. WAX ( TAPPI T4 59 0S75 > 50 W SURFACB PICK STRBNGTH. WAX < TAPPI T4 59 0S75 )

50 W SURFACE PICK STRENGTH,

GAMMA - 54 DEGRBES

WAX ( TAPPI T459 0S75 >

57
WAX

NUMBER

SURFACE PICK STRENGTHNAX

SRMPLE H80 = 11 .0 HRX NUMBER SAMPLE H76 = 8.6 WRX NUMBER

58
REPORT NO. 52S TAPPI COLLABORATIVE REFERENCE PROGRAM ANALYSIS T91-1 TABLE 1 CONCORA (CORROGATING MEDIUM TBST-CMT ) TAPPI STANDARD T809 OS-71

MARCH 1978

LAB SAMPLE

E55 LINERBOARD

129 GRAMS PER SQUARB METBR

C0DB MEAN DEV N.DEV SDR R. SDR

LI 00 1 81. 6. .55 13. 1.13

LI 82 175. -1 . -.06 7. . 63

LI 85 188. 13. 1.27 10. .93

L2i e 173. -3. -.26 7. . 67 L242 169. -6. -.60 10. . 87

L2 5 5 157. -19. -1.83 13. 1. 21 L269 174. -1 . -.10 14. 1 . 24 L289 181. 5. .50 14. 1.24 L329 1 74. -1 . -.14 20. 1.62

L335 201. 25. 2.45 10. .93 L394 171. -4. -.40 3. .28

L484 167. -8. -.80 12. 1.12 L575 170. -5. -.48 16. 1.43 L666 174. -1 . -.10 10. . 94

GR. MEAN

SD MEANS

GR. MEAN

• 175.

- 10.

- 59.43

NEWT0NS

NEWT0NS

AVERAGE SDR P0UNDS- 11.

GRAND MEAN

SD OF MEANS NEWTONS

GRAND MEAN TOTAL NUMBER OF LABORATORIES REPORTING - 14

Best values: E55 175 + 20 newtons

E67 180 + 25 newtons

SAMPLE KRAFT TEST D. • 10 E67 143 GRAMS1 PER SQUARE MBTER

MBAN DBV N. DEV SDR R. SDR VAR F LAB

192. 9. .57 16. 1 .31 91 H 0 LI 00

1 83. 0. .02 19. 1.55 91 T 0 LI 82 201. 18. 1.15 11 . .90 91 A 0 LI 85

181. -1 . -.09 13. 1.03 911 0 L218

166. -17. -1.04 17. 1 .39 91 G 0 L242

150. -33. 1 OJ 0 <* 15. 1.25 91 I 0 L255

1 85. 3. .16 6. .49 911 6 L269

187. 4. .24 11 . .95 91 I 0 L289

1 83. -0. -.00 10. .80 91 I 0 L329

208. 25. 1.57 17. 1.42 911 0 L336

170. -13. -.78 4. .30 91 R 0 L394

166. -17. -1.06 7. .60 91 H 0 L484

205 o 22. 1.35 19. 1 .54 9 1 H » L575

182. -1 . -.03 12. 1.01 91 S 0 L666

183. NEWTONS TEST DETERMINATIONS • 10 16. NEWTONS 14 LABS IN GRAND MEANS

AVERAGE SDR - 12. NEWTONS

41.11 POUNDS

REPORT NO. 52S TAPPI COLLABORATIVE REFERENCE PROGRAM ANALYSIS T91-1 TABLE 2 CONCORA (CORRUGATING MEDIUM TEST-CMT ) TAPPI STANDARD T809 OS-71

MARCH 1978

LAB C0DE F MBANS

E55 E67 COORDINATES

MAJOR MINOR

AVG

R. SDR VAR PROPERTY-** - TEST INSTRUMENT- --C0NDITI0NS

L2 5 5 0 157. 150. -38. -0. 1.23 91 I FLAT CRUSH STRENGTH. CONCORA, H*D

L484 0 167. 166. -19. -1. .86 91 H FLAT CRUSH STRENGTH. CONCORA., H* D L242 0 169. 166. -18. -3. 1.13 91 G FLAT CRUSH STRENGTH, CONCORA, GAYD0N FLAT

L575 * 170. 205. 16. 15. 1 .49 91 H FLAT CRUSH STRENGTH, CONCORA. H^D L394 0 171 . 170. -13. -3. .29 91 R FLAT CRUSH STRENGTH. CONCORA, TMI

L21 8 0 173. 181 . -3. 2. . 85 91 ). FLAT CRUSH STRENGTH, CONCORA, H # D L32 9 0 174. 163. -1 . 1. 1.31 91 I FLAT CRUSH STRENGTH, CONCORA, H*D

L6 6 6 0 174. 182. -1 . 1 . .97 91 S FLAT CRUSH STRENGTH, CONCORA, T0Y0 SEIKI 1 L26 9 0 174. 185, 2. 2. .86 91 I FLAT CRUSH STRENGTH, CONCORA, H*D

LI 82 6 175. 183. -0. 1. 1.09 91 T FLAT CRUSH STRENGTH, CONCORA, TMI L299 0 1 81 . 187. 6. “3. 1.09 91 I PLAT CRUSH STRENGTH, CONCORA, H*D

LI 00 0 181. 192. 11 . -0. 1.22 91 H FLAT CRUSH STRENGTH, CONCORA. H^D

Li 8 5 0 188. 201. 23. -2. .92 91 A FLAT CRUSH STRENGTH, CONCORA, TNSTR0N

L33 6 0 201 , 208. 35. -9. 1.18 91 I FLAT CRUSH STRENGTH, CONCORA, H*D GMEANS

175. 95*183. ELLIPSE: 53. 15. 1.00 WITH GAMMA • 59 DEGREES

PLAT CRUSH TESTER

59
:0NC0RR ( CMT

ZD

CD

Q_

SAMPLE E55 = 175. NEWTONS

SAMPLE ESS = 39-4 POUNDS

SAMPLE E67 = 183. NEWTONS

SAMPLE E67 =41.1 POUNDS

CM CO

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120 130 140 150 160 170 180

NENT0NS

190 200 210 220 230 240

26 28 30

i 32

i 34 36 38 40

POUNDS

42

i 44i 46 48

i 50i 52

60
REPORT NO. 523 TAPPI COLLA BO RATI VB REPBRBNCB PROGRAM MARCH 1978 ANALYSIS T96-1 TABLE 1 RING CRUSH (COMPRESSION RESISTANCE OP PAPERBOARD

)

TAPPI STANDARD T472 SU-68 SAMPLE LINERBOARD SAMPLB KRAPT TEST D. ' 10 LAB E55 129 GRAMS PBR :SQUARE METER E67 143 GRAMSt PER SQUARE METER

CODE MEAN DEV N.DEV SDR R. SDR MEAN DBV N. DEV SDR R. SDR VAR F LAB

LI 00 1 88. -6. -.22 37. 2.18 244. 14. .43 16. 1.09 96 H 0 LI 00

LI 07 1 85. -9. -.35 16. .95 218. -12. -.39 20. 1.34 96P 0 LI 07

Li 1 A 197. 3. .10 13. .79 234. 4. .11 14. .97 96P 0 LI 14

LI 22 141. -53. -2.08 26. 1 . 56 175. -55. -1.73 15. 1 .04 96P 0 LI 22

Li 2 4 152. -42. -1.64 20. 1.17 192. -38. -1.19 13. .86 96P a LI 24

Li 26 206. 12. .47 12. .71 259. 29. .90 9. .62 96P 6 LI 26

Li 27 199. 5. .20 17. . 99 210. -20. -.65 12. . 83 96P 0 LI 27

Li 5 7 192. -2. -.07 1*. .71 207. -23. -.72 15. 1 .00 96P 0 LI 57

Li 7

1

207. 13, .50 11. .67 242. 12. .39 20. 1.37 96H 0 LI 71

Li 82 213. 19. .73 17. 1.00 257. 27. .84 10. .68 96H 0 LI 82

Li 91 179. -15. — • 60 18. 1.03 210. -20. -.63 25. 1.67 96P 0 LI 91 L2 4 2 244. 50. 1.96 8. .48 258. 29. .90 15. 1.01 96G 0 L242

L3 0 3 233. 39. 1.53 16. .93 299. 69. 2.19 14. .93 96H 0 L303

L3 0 7 189. -5. -.21 15. . 87 207. -23. -.72 12. . 80 96P 0 L307

L329 223. 29. 1.13 13. .78 287. 57. 1.79 7. .50 96P 0 L329

L336 193. -1. -.02 19. 1.12 230. 0. .01 16. 1 .08 96P 0 L336

L350 198. 4. .15 16. .94 231. 1 . .03 10. .66 96P 0 L350

L393 201 . 7. ,29 12. .72 254. 24. .77 10. .65 96P 0 L393

LAS 4 1 53. -41 . -1,61 15. .87 177. -53. -1.66 16. 1.07 96R 0 L484

L553 180. -14. -.65 22. 1.31 196. -34. -1.07 22. 1.53 96P 0 L553

L562 196. 2. .09 20. 1.18 232. 2. .07 17. 1.13 96P 0 L562

LS70 189. -5. -.21 15. .90 199. -31 . -.97 9. .62 96T 0 L570

L575 212. 18. .71 16. .94 245. 15. .48 14. .99 96H 0 L575

L603 231. 37. 1.44 18. 1,07 269. 39. 1.22 14. .98 96P 0 L603

L61 0 215. 21. • 81 10. .59 259. 29. .91 14. .99 96P 0 L61 0 L617 150. -44. -1.73 26. 1.56 203. -27. -.84 22. 1 .48 9 6 Y 0 L617

L653 174. -20. -,79 16. .97 215. -15. -.48 16. 1.09 96P 0 L663

GR. MEAN 194. NEWTONS GRAND MEAN - 230. NEWTONS TEST DETERMINATIONS - 1

1

SD MEANS * 26. NEWTONS SD OP MEANS - 32. NEWTONS 27 LABS IN GRAND MBANS AVERAGE SDR * 17. NBWT0NS AVERAGE SDR - 15. NEWTONS

GR. MEAN - 43.63 POUNDS QHAND MEAN - 51.71 POUNDS TOTAL NUMBBR OF LABORATORIES REPORTING - J7

Best Values: E55 200 + 45 newtons

E67 230 + 50 newtons

61
REPORT NO. S2S TAPPI CO LLA B0RAT I VE REPBRENCE PROGRAM IfARCH 1976 ANALYSIS T96-1 TABLE 2 RING CRUSH ( COMPRESSION RESISTANCE OP PAPERBOARD

TAPPI STANDARD TA72 SU-68 LAB MEANS COORD I NATES AVG CODE F E55 E67 MAJOR MINOR R. SDR VAR PR0PBRTY-- -TEST I NSTRUMENT—--C0NDI TI0N S

LI 2 2 0 141 . 175. -76. 8. 1.30 96P RING CRUSH, H AND D L61 7 0 ISO. 203. -48. 18. 1.52 96 Y RING CRUSH: GIVE INSTRUMENT MAKE MODEL

Li 2 4 0 152. 192. -56. 10. 1.01 96P RING CRUSH, H AND D L484 0 153. 177. -67. 0. .97 96R RING CRUSH, REGMBD

L663 0 174. 215. -24. 7. 1.03 96P RING CRUSH, H AND D

Li 91 0 179. 210. -25. -0. 1.35 96P RING CRUSH, H AND D L553 0 180. 196. -35. -10. 1.42 96P RING CRUSH, H AND D

Li 07 0 185. 218. -15. -1 . 1.15 96P RING CRUSH, H AND D

Li 0 0 0 188. 244. 7. 13. 1.63 96H RING CRUSH, H AND D L570 0 1 89. 199. -28. -IS. .76 96T RING CRUSH, TMI L307 0 189. 207. -21. -10. .83 96 P RING CRUSH, H AND D

Li 57 0 192. 207. -19. -12. .86 96 P RING CRUSH, H AND D L33 6 0 193. 230. -0. 1. 1.10 96P RING CRUSH. H AND D L562 0 196. 232. 3. -0. 1.16 96P RING CRUSH, H AND D

LI 14 0 197. 234. 4. 0. . 88 96P RING CRUSH, H AND D

L350 6 198. 231 . 3. -3. .80 96 P RING CRUSH, H AND D

LI 27 0 199. 210. -13. -17. .91 96 P RING CRUSH, H AND D L393 0 201 . 254. 24. 9. .69 96P RING CRUSH, H AND D

Li 2 6 0 206. 259. 30. 8. .67 96P RING CRUSH, H AND D

LI 71 0 207. 242. 18. -2. 1.02 96 H RING CRUSH, H AND D

L575 0 21 2. 245. 23. -5. .96 96 H RING CRUSH, H AND D

Li 82 0 213. 257. 32. 2. .84 96 H RING CRUSH, H AND D LSI 0 0 215. 259. 36. 1 . .79 96 P RING CRUSH. H AND D L32 9 0 223. 287. 63. 12. .64 96 P RING CRUSH, E AND D L6 03 0 231 . 269. 53 . -5. 1.03 96P RING CRUSH, H AND D

L30 3 0 233. 299. 79. 12. . 93 96H RING CRUSH, H AND D L242 0 244. 258. 53. -22. .74 96G RING CRUSH, GAYD0N FLAT CRUSH TBSTER

GtfEANS

194. 230. 1.00

95* ELLIPSE: 105. 26. WITH GAMMA - 52 DBGREES

62
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RING CRUSH

SAMPLE E55 = 194. NEWTONS SAMPLE E67 = 230. NEWTONS

SAMPLE E55 = 43.6 POUNDS SAMPLE E67 = 51 .7 POUNDS

35 40 45 50 55 60 65 70

POUNDS

20 25 30

63
REPORT NO. 52S TAPPI COLLABORATIVE EEFBREKCB PROGRAM MARCH 1976

SUMMARY TABLE

SAMPLB GRAND SD OF AVER RBPL LABS LABS RBPL TEST METHOD CODB MEAN MEAN SDR CRP INCL PARTIC TAP PI RBPBAT REPR0D BURSTING STRENGTH, MODEL C H39 36.23 1.97 2.15 15 43 51 10 1.88 5.55

T10-1 PSI H60 18.19 1.60 1.18 1.03 4.48

BURSTINGl STRENGTH, MODEL C-A H39 35.9 1.7 1.8 15 37 37 10 1.6 4.8 T10-2 PSI H60 1 8.7 1.3 1.3 1.1 3.7 BURSTING STRENGTH. HIGH RANGE H07 73.6 3.0 6.3 15 31 43 10 5.5 9.0

Tii-i PSI H25 54.0 2.2 2.7 2. 4 6.2 TEARING STRENGTH, DEEP CUTOUT Ell 58.2 2.7 1.4 15 106 126 10 1.3 7.4

T15-1 GRAMS B17 60.8 3.3 2.0 1.7 9.2 TEARING STRENGTH.NO CUTOUT B63 77.4 3. 5 2.4 15 13 14 10 2.1 9.8

T17-1 GRAMS E21 64.7 2.7 2.5 2.2 7.6 TENSILE STRENGTH. PACKAGING PAPERS B63 3.92 .19 .17 20 45 53 12 .14 .53 T19-1 KILONBWTON/M B66 3.74 .24 .32 .25 .67

TEN SI LB STRENGTH. CRE TYPE J07 6.29 .36 .36 20 44 51 12 .28 1.02

T20-1 KILONEWTON/M J05 5.38 .31 .23 .19 .87 TENSILE STRENGTH, PENDULUM TYPB J07 6.21 .40 .41 20 36 39 1 2 .33 1.13

T20-2 KILONEWTON/M JOS 5.41 .38 .28 .22 1.06

T.E. A. . PACKAGING PAPERS E63 82.2 6.5 11.6 20 18 20 12 9. 3 18.9

T25-1 JOULES/SQ M B66 74.0 5.4 17.9 14.3 17.5

T, E, A. . PRINTING PAPERS J 07 74.2 7.3 8.8 20 22 22 12 7.0 20.7

T26-I JOULES/SO M J05 59.4 5.5 5.9 4. 7 15.4 ELONGATION TO BREAK, PACKAGING PAPER B63 3.04 .34 .28 20 17 18 12 .23 .94 T28-1 PERCBNT B66 2.86 .35 .44 .35 .99 ELONGATION TO BREAK. PRINTING PAPBR J07 1.866 .209 .147 20 17 20 12 .118 .583

T29-1 PBRCENT JOS 1.682 .192 .11 5 .092 .535 FOLDING ENDURANCE < MIT) H35 72. 26. 22. 15 41 51 10 20. 73. T30-1 DOUBLB FOLDS H47 73. 14. 18. 16. 41 . FOLDING ENDURANCE (MIT) H35 1.800 .184 .143 15 41 51 10 .125 .51 4 T30-2 LOG(IO) FOLD H4 7 1 . 843 .088 .114 .100 .250 STIFPNBSS, GURLEY H68 457. 28. 24. 10 37 38 10 21 . 79. T35-1 GURLBY UNITS H6S 397. 24. 19. 16. 67. STIFFNBSS, TABER B63 18.89 .80 .74 10 25 28 5 .92 2.31 T36-1 TABER UNITS J09 17.33 .84 .85 1.06 2.44 SURFACE PICK STRENGTH. IOT H80 70.6 30.8 3. 1 4 9 15 4 4.3 85.2

T49-1 KP CM/SEC H76 54.1 23.4 3.2 4. 4 64.8 SURFACE PICK STRENGTH. WAX H80 11.02 1.13 .40 5 21 21 5 .50 3.14

T50-1 WAX NUMBER H76 8.63 1.30 .62 .77 3.59 CONCORA ( CMT ) B55 175. 10. 11 . 10 1 4 14 10 10. 29. T91-1 NEWTONS B67 1 83. 16. 12. 11. 45. RING CRUSH B55 194. 26. 17. 10 27 27 10 IS. 71. T96-1 KEWTONS B67 230. 32. 15. 13. 88.

64
NBS-1 14A (REV. 7-73)

U.S. DEPT. OF COMM. BIBLIOGRAPHIC DATA

SHEET

1. PUBLICATION OR REPORT NO. TAPPI CRP 52

S

2. Gov’t Accession

No.

3. Recipient’s Accession No.

4. TITLE AND SUBTITLE

Technical Association of the Pulp and Paper Industry

COLLABORATIVE REFERENCE PROGRAM FOR PAPER

Report #52S

5. Publication Date 6/19/78

6. Performing Organization Code

7. AUTHOR(S) 8. Performing Organ. Report No. NBSIR 78-1342

9. PERFORMING ORGANIZATION NAME AND ADDRESS

NATIONAL BUREAU OF STANDARDS

DEPARTMENT OF COMMERCE

WASHINGTON, D.C. 20234

10. Project/Task/Work Unit No. 7825578

11. Contract/Grant No.

12. Sponsoring Organization Name and Complete Address (Street, City, State, ZIP)

Collaborative Testing Services, Inc., 9241 Wood Glade Drive,

Great Falls, Virginia 22066; and Technical Association

of the Pulp and Paper Industry

13. Type of Report & Period Covered

Final

14. Sponsoring Agency Code

15. SUPPLEMENTARY NOTES

16. ABSTRACT (A 200-word or less factual summary of most significant information. If document includes a significant

bibliography or literature survey, mention it here.)

Collaborative Reference Programs provide participating laboratories with the means for checking periodically the level and uniformity of their testing in

comparison with that of other participating laboratories. An important

by-product of the programs is the provision of realistic pictures of the state

of the testing art. This is one of the periodic reports showing averages for

each participant, within and between laboratory variability, and other information

for participants and standards committees.

17. KEY WORDS (six to twelve entries; alphabetical order; capitalize only the first letter of the first key word unless a proper name; separated by semicolons)

Collaborative reference program; Laboratory evaluation; Paper; Precision;

Reference samples, Testing calibration.

18. AVAILABILITY |

' Unlimited 19. SECURITY CLASS

(THIS REPORT)

21. NO. OF PAGES

|X For Official Distribution. Do Not Release to NTIS

UNCL ASSIFIED

70

I

1 Order From Sup. of Doc., U.S. Government Printing Office Washington, D.C. 20402 . SD Cat. No. CV}

20. SECURITY CLASS

(THIS PAGE)

22. Price

I ! Order From National Technical Information Service (NTIS)

Springfield, Virginia 22151 UNCLASSIFIED

USCOMM-DC 29042-P74
.
This diagram is composed of two fullsize overlaid tracings. One tracing

was made from the Thwing-Elmendorf

tear tester with NO CUTOUT (old style)

The other tracing was made from the

Thwing-Elmendorf tear tester with

DEEP CUTOUT. The cross hatched area

represents the metal removed from the

swinging sector when the deep cutout

(new) style was created.

DEEP CUTOUT instrument

is 5/8 inch across

NO CUTOUT instrument

is 1 1/ U inch across

Note shape of pendulum

sector with respect to

an imaginary line drawn

across the top of the

specimen clamp

DEEP CUTOUT

NO CUTOUT

I

i
10 0 2


WERT

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