TBS/CDC1 0 (6658 ) P3 
  
 
© TBS 20 20 All right Reserved                                                                 First Edition 20 20                                                                
  
DRAFT TANZANIA STANDARD  
 
 
 
 
 
 
 
 
TBS/CDC -10 (6658 ) P3 Jumbo tissue roll (plus size toilet 
paper) — Specification   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
TANZANIA BUREAU OF STANDARD STBS/CDC10  (6658 ) P3 
 
© TBS 20 20 - All rights reserved                                                                       First Edition 2020                                                                    0   Foreword  
 
This Draft Tanzania Standard is being developed by Station ery and Paper  Produ cts Technical 
Committee under supervision of the Chemical Division Standards Committee and it is in 
accordance with the procedures of the Bureau.  
 
 
This Draft Tanzania Standard is the  first edition of Jumbo  tissue  roll (plus size toilet paper)  – 
Specificat ion. 
 
 
This draft Tanzania Standard has been prepared with assistance drawn  from the following 
documents:  
 
TZS 651 Toilet  paper  - Specification,  published by Tanzania  Bureau of Standards.   
 
             KS 2586:2016 Jumbo tissue roll (plus size toilet pap er) -Specification, published by  
             Kenya Bureau of Standards . 
 
 
For the purpose of deciding whether a particular requirement of this Tanzania Standard is 
complied with, the final value observed or calculated, expressing the result of a test or analysis, 
shall be rounded off in accordance with TZS 4  (see clause 2).  
 
 
 
                                                                 TBS/CDC10( 6658 ) P3 
  
 
©TBS 20 20 – All rights reserved                                                                                                   1  
 
DRAFT TANZANIA STANDARD                TBS/CDC 1 0 (6658)  P3 
 
Jumbo tissue roll (plus size toilet paper) — Specification  
 
1   Scope  
 
This draft Tanzania Standard specifies the requirements, s ampling and test methods for Jumbo 
tissue  roll (plus size toilet paper) .  
  
2   Normative references  
 
The following documents, in whole or in part, are normatively referenced in this document and are 
indispensable for its application. For da ted references,  only the edition cited applies. For undated 
references, the latest edition of the referenced document (including any amendments) applies.”  
 
TZS 4:  Rounding off numerical value  
 
TZS 81:  Method for the determination of grammage ( basic mass)  
 
             TZS 80: Pape r – Sampling methods for testing  
 
TZS 82: -ISO 187, Paper board and pulps — Standard atmosphere for conditioning and 
testing    and    procedure for monitoring the atmosphere and conditioning of samples  
 
TZS 83: -ISO 287; Paper a nd board — Dete rmination of moisture content of a lot — 
Oven -drying method  
ISO 6588 -1, Paper, board and pulps — Determination of pH of aqueous extracts — Part 
1: Cold extraction  
 
ISO 11093 -7, Paper and board — Testing of core — Part 7: Determination of fle xural 
modulus b y the three -point method  
 
ISO 12625 -1, Tissue paper and tissue products — Part 1: Vocabulary  
  
ISO 12625 -4, Tissue paper and tissue products — Part 4: Determination of tensile 
strength, stretch at break and tensile energy absorption  
 
ISO 12 625-7, Tissue p aper and tissue products — Part 7: Determination of optical 
properties — Measurement of brightness and colour with D65/10 ° (outdoor daylight)  
 
ISO 12625 -8, Tissue paper and tissue products — Part 8: Water -absorption time and 
water -capacity,  basket -immersi on test method  
 
 
 
 
             
 
  
  ©TBS 20 20 – All rights reserved    
3   Terms and d efinitions  
 
For the purpose of this  draft Tanzania Standard the fo llowing definitions shall apply:  
 
3.1 blended tissue paper  
tissue made from a mixture of virgin and recycled pulp  
 
3.2 creped pa per  
paper that  has been subjected to creping  
3.3 creping   
operation of crinkling in order to increase its stretch and softness . 
 
3.4cross direction (CD)  
direction in the paper that is at right angles to the machine direction . 
 
3.5 defective  
set of test p ieces that fail s in one or more respects to comply with the relevant requirements of 
the standard . 
 
3.6 embossed paper  
paper of which raised or depressed design has been produced generally by pressure from 
engraved roll or plate . 
 
3.7 grammage  
mass of a u nit area of pap er or board determined by the standard test method . 
 
3.8 hole 
area in the sheet void of fibres and having a specified diameter . 
 
3.9 lot  
one or more nominally identical package of paper, the paper having been made on the same 
equipment unde r essentially t he same conditions, from one manufacturer, and submitted at any 
one time for inspection and testing . 
 
3.10 machine direction (MD)  
direction in a paper or a board parallel to the direction of travel of the web on the paper or board  
machine . 
 
3.11 ply 
layer  of single sheet . 
 
3.12 recycled tissue paper  
tissue made from recycled pulp . 
 
3.13 sheet  
portion of toilet paper between consecutive rows of perforations on a roll irrespective of whether 
the toilet paper is single -ply or multi -ply. 
 
3.14 tissue paper  
wet- or dry -crêped or uncrêped (single ply) sheet material, manufactured on any kind of tissue 
paper machine, mainly based on cellulosic fibre pulps.  
 
  
©TBS 20 20 – All rights reserved                                                                                                    3   3.15 tissue product  
tissue paper in its converted form, single or multi -ply, embossed or not  embossed, lami nated or 
not laminated as required for its intended use . 
 
3.16 virgin tissue paper  
tissue made from virgin pulp . 
 
 
4   Requirements  
 
4.1 General requirements   
 
4.1.1  Jumbo   tissue  in rolls  shall be made from processed virgin pulp, blended  or recycled 
pulp.Chemicals used in manufacture of  jumbo   tissue in rolls  shall not be harmful and cause 
irritation to human beings when used for its intended purpose.  
 
4.1.2  Jumbo   tissue   in rolls shall be manufactured, packaged and handled under  good hygienic 
practi ce and the colour shall be  white or coloured.   
  
4.1.3 The width of the wound paper shall be equal to the length of the core. During winding, the 
paper shall be kept stretched to prevent formation of creases .  
 
4.1.4 The Jumbo  tissue in rolls shall be pe rforated across the full width along the length of the 
roll. The perforation shall be such that they are in line for both plies and each sheet could be 
readily torn off along the perforations without causing damage to itself or to the neighb oring 
sheet . 
 
4.1.5 The paper shall be free from deleterious defects (e.g. fibre bundles, wood splinters) and 
from defects that may impair its serviceability  
 
4.2 Specific requirements  
 
4.2.1  Jumbo tissue  in rolls shall comply with the relevant physical a nd chemical requirement s 
given in Table 1  when  tested in accordance with the method specified therein.  
 
4.2.2  Jumbo tissue in  rolls shall comply with microbiological requirements in Table 2 when tested 
in accordance with the method specified therein.  
 
4.3.3 The dimension al requirements shall be as shown in Table 3 when tested in accordance with 
the method specified therein  or agreed between client and supplier .  
 
4.3.4  The minimum length of the roll of jumbo tissue  with 100,150 and 200 shall be 12 m, 18 m o r 
24 m respecti vely for the corresponding number of sheets .                                                                TBS/CDC10( 6658 ) P3 
  
 
©TBS 20 20 – All rights reserved                                                                                                   1  
Table 1 - Physical and chemical requirements  (singly -ply, soft and strong, double -ply, soft 
and three ply and above ) 
 
 
S/No.  Characteristic s  Requirement s Test method  
i 
Grammage, 
g/m2 per ply  
 Virgin tissue  16 – 21   
TZS 81  Blended 
tissue  16 – 24 
Recycled 
tissue  17 – 24 
ii Tensi
le 
stren
gth, 
N/m 
of 
width
, min.  
 MD 
 Virgin tissue                  140 - 220  
 
ISO 12625 -4 Blended 
tissue  140 - 220 
Recycled 
tissue  140 - 220 
CD Virgin tissue  47 - 107 
Blended 
tissue                                47- 107 
Recycled 
tissue                          47 - 107 
Aver
age 
of 
both 
direct
ions Virgin tissue                   93 - 164 
Blended 
tissue                   93 - 164 
Recy cled 
tissue                   93 - 164 
iii Water absorptiveness, g/m2, 
min. 20 ISO 12625 -8 
iv pH value  4.4 – 8.5 ISO 6588 -1  
v Moisture content, %  4.0 – 7.0 TZS 83/ ISO 
287 
vi Softness, Nm, max.  
• Virgin  
• Blended  
• Recycled  - 
170 
400 
150 Annex A  
 
vii Brightness of white paper, 
%, min.  80 ISO 12625 -7 
viii Perforation ratio, min.  0.75 Annex B 
  
  ©TBS 20 20 – All rights reserved   ix Number of sheets per rolla Minimum of 700 sheets in increasing multiples 
of-100 Physical count  
aThe tolerance for the num ber of sheets  shall not be less than the nominal declared number by 1% 
sheet  
 
 
 
4.3 Microbiological examination  
 
Tissue roll shall comply with microbiological requirements on Table 2. 
 
Table 2 — microbiological limits for Jumbo tissue roll (Plus size toil et paper)  
 
 
S/No. Characteristic s Limit  Test method  
I Total plate count, cfu/g max. 300 
ISO 8784 -1 Ii Pseudomonas aeruginosa  ,cfu/g   
Not detectable in 1 g of 
the product  Iii Staphylococcus aureus,  cfu/g  
Iv Candida albicans, cfu/g  
V Escherichia co li,  cfu/g  
 
 
4.4 Dimensional  
 
Table 3 — Requirements for dimensions  
 
The jumbo roll dimensional requirements shall be as given in Table 3.  
 
Table 3— Dimensional requirements for Jumbo  tissue  in rolls and  sheets  
 
 
Sl. No.   
Characteristics   
Requirements  
  
Tolerance  Test method  
1.  Internal diameter of the core,  mm 
 40-75  3 ISO 11093 -7 
2.  External diameter  of the core,  mm 
 40-75  3 
3.  Length of the core,  mm 
 100  1 
4.  Width of each sheet,  mm 
 100  1 
5.  Length of each sheet,  mm, min. 
 124 - 
6.  Number of sheets, min . 
 
 Minimum of 700 
sheets in 
increasing 
multiples of 100  Declared 
number of 
sheets shall 
be  2                                                                 TBS/CDC10( 6658 ) P3 
  
 
©TBS 20 20 – All rights reserved                                                                                                   1  
4.5 Length of roll  
 
The minimum length of the roll of paper shall be 86,800 mm for all three grades of Jumbo tissue 
roll. 
 
4.6 Freedom from hole s 
 
The averag e number of holes in the sheets of a roll shall not exceed 5 per hundred sheets.  
 
4.7 Constructions of rolls  
 
4.7.1 The  paper shall be evenly and firmly wound on a cylindrical core. The number of malformed 
sheets at the core end of a roll shal l not exceed five. 
 
5   Sampling  
 
5.1 Sampling methods shall be carri ed out as prescribed in TZS 80 .  
 
5.2 Number of Tests  
 
Each of the rolls/packages selected from the lot shall first be examined for the requirements given 
in 4.1, 4.2, 4.3, 4.4, 4.5, 4.6  and 4.7. Then  a sheet of suitable size from rolls shall be cut, taking at 
least the top three layers. Test pieces shall then be cut from sheets for testing requirements 
mentioned in 4.1,4.2,4.3,4.4,4.5,4.6  and 4.7. Tests for these characteristics except pH  shall be 
conducted individually on each of the sample sheet. A roll or sheet not meeting the requirements 
for any one or more of these characteristics shall be considered as defective. Test for pH shall be 
conducted on composite sample.  
 
5.3 Criteria for  conformity   
 
A lot shall be declared as conforming to the requirements of this  standard if the requirement s 
mentioned in 4.1, 4.2, 4.3,  4.4, 4.5, 4.6 and 4.7 are satisfied and if the number of defective roll 
and sheets does not exceed the acceptance numbe r.  This acce ptance number shall depend on 
the size of the sample and shall be equal to 0 if the sample size is less than 13. It shall be equal 
to 1 if the sample size is greater than or equal to 13. A roll or sheet not meeting the requirements 
for any one  or more shal l be considered as defective.  
 
6   Test methods  
 
Samples of -Jumbo tissue roll  (plus  size toilet paper) shall  be conditioned in accordance with TZS 
82/ISO 187.  
 
7   Packaging and marking  
 
7.1 Packaging  
7.1.1 Jumbo tissue rolls of the same type (Virgin, B lended,  Recycled) , size, length and color shall 
be packed together.  
 
7.1.2 Jumbo tissue in rolls  shall be packaged in suitable material that protects it from dust, 
moisture and dirt during transportation, storage and normal use.   
  ©TBS 20 20 – All rights reserved   7.1.3 Rolls  of jumbo tissu e shall be constructed in a manner that  
a) paper shall be evenly and firmly wound on cylindrical core,  
b) the number of malformed sheets at the core end of a roll shall not exceed five,  
c) the sides of each roll shall be neatly cut, and  
d) the sheet shall be severed along row of perforations and the tear shall be manifestly due 
to the perforations alone.  
7.2 Marking  
 
7.2.1 Each  roll shall be legibly and indelibly marked with the following:  
       
a) name of the product shall appear as "  Jumbo t issue  roll "; 
b) batch number or code number ; 
c) machine direction  
d) the type of paper “ virgin tissue paper”, “recycled tissue paper ”, or “blended tissue paper”;  
e) diameter and width of roll;  
f) country of origin/manufacture ; 
g) name and physical address of the manuf acture r or local dist ributor and registered 
trademark ; 
h) indicate number of ply  and  
i) number of sheets of each roll . 
 
  
©TBS 20 20 – All rights reserved                                                                                                    3    
 
Annex A  
(normative)  
 
Determination of softness  
A.1 Apparatus  
 
An instrument that measures the combination of resistance due to surface fr iction  and flexural 
rigidity of sheet material when forced by a blade through a slot that has parallel edges and a 
width of 6.35 mm  
 
A.2 Test specimens  
 
From the rolls taken in accordance with Table 4 of 5.1, cut at random 20 test specimens (that is, 
10 pairs) each of size 10 0 mm x 100 mm with the adjacent edges parallel to the machine and 
cross directions respectively.  
 
A.3 Procedure  
 
A.3.1  Place a pair of the specimens next to each other and centrally over the slot with their cross 
directions parallel to  the s lot. 
 
A.3.2  Start the blade mechanism and record the maximum reading. Turn the two specimens 
through 90 so that their machine directions: are parallel to the slot. Again,  record the maximum 
reading.  
 
A.3.3  Repeat the procedure on the remaining nine pairs of specimens en suring that equal 
number of tests are performed on each side of the paper.  
 
A.3.4  Calculate and report to three significant figures the average of all readings in millinewtons  
as the softness of the paper.  
     
 
 
©TBS 20 20 – All rights reserved  
 
 Annex B  
(normative)  
 
Deter minati on of perforati on ratio  
 
B.1 Apparatus  
 
Appropriate measuring device, such as a metre rule graduated with 0.5 mm interval  
 
B.2 Procedure  
 
Using a metre ruler, measure the perforations of one perforation line. The sum of the perforations 
divided by t he wid th of the paper  gives the ratio of perforations to the width. Measure the 
perforation of five lines and take the mean of the ratio.   
 
B.3 Results  
 
The mean ratio shall not be less than that specified in table 1.