TBS/CDC1 0 (6259 ) P3 
  
 
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DRAFT TANZANIA STANDARD  
 
 
 
 
 
 
 
 
TBS/CDC -10 (6259 ) P3 TEST  LINER BOARD  — SPECIFICATION  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
TANZANIA BUREAU OF STANDARD STBS/CDC10  (6259 ) P3 
 
© TBS 20 19 - All rights reserved                                                                       First Edition 2009                                                                     0   Foreword  
 
This Draft Tanzania Standard is being developed by Station ery and Paper  Products Technical 
Committee un der supervision of the Chemical s Division al Standards Committee and it is in 
accordance with the procedures of the Bureau.  
 
Test liner board is a strong paper made mainly from recycled pulp or fibre.  
 
 
This Draft Tanzania Standard is the  first edition of Test liner board – Specification .  
 
This draft Tanzania Standard has been prepared with assistance drawn  from the following 
documents:  
 
IS 9588 :2014 Kraft liner - Specification,  published by India Bureau of Standards.  
 
IS 1763: 2018 Specification for substa nces of paper and pulp board, published by India 
Bureau of Standards  
 
SANS431 :2007 Liners and fluting for corrugated board  - Specification,  publishe d by 
South African National Standard.   
 
TZS 2146: 2018 - EAS 865: 2017  Corrugated fibre  board boxes for gen eral packaging – 
Specification  
 
 
 
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 analy sis, 
shall be rounded off in accordan ce with TZS 4 . 
 
 
 
 
                                                     TBS/CDC10  (6259 ) P3   
 
©TBS 20 19 – All rig hts rese rved                                                                                                   1  
 
DRAFT TANZANIA STANDARD                TBS/CDC 10 (6259)  P3 
 
Test liner board  – Specification  
 
1   Scope  
 
This draft Tanzania Standard specifies the requirements, sampling and test methods of test liner 
board used to manufacture corrugated board boxes .  
  
2   Normative references  
 
The following docume nts, in whole or in part, are normatively referenced in this document and are 
indispensable for its application. For dated references, only the edit ion cited applies. For undated 
refere nces, the latest edition of the referenced document (including any amen dments) applies.”  
 
TZS 4:  Rounding off numerical value  
 
TZS 79: Paper – Dete rmination for bursting strength  
 
TZS 81:  Method for the determination o f grammage ( basic mass)  
 
TZS 80: Pape r – Sampling methods for testing  
 
 
TZS 82: -ISO 187, Paper board and pu lps — Standard atmosphere for conditioning and 
testing    and    procedure for monitoring the atmosphere and conditioning of samples  
 
TZS 83: -ISO 287; Paper and board — Determination of moisture content of a lot — 
Oven -drying method  
 
TZS 423: -ISO 535: Paper and board — Determination of water absorptiveness - cobb 
method  
 
TZS 747: - ISO 1974, Paper — Determination of tearing resistance — Elmendorf me thod 
 
TZS 748 -2: - ISO 1924 -3, Paper and board — Determination of tensile properties —- Part 
3: Constant rat e of elongation method (100 mm/min)  
 
TZS 891: -ISO 534; Paper and board — Determination of thickness, density and specific 
volume  
 
ISO 6588 -1: Paper , board and pulps — Determination of pH of aqueous extracts — Part 1: Cold 
extraction  
 
ISO 12192 : Paper and Board  - Determination of compressive strength – Ring Crush method   
  
  ©TBS 2 019 – All rights reserved   3   Terms and d efinit ions 
 
For the purpose of this  draft Tanzania Standard the following definitions shall apply:  
 
3.1  bursting strength  
 
maximum uniformly distributed pressure, applied  at right angles to its surface, that a test piece of 
paper o r board will stand, under specifie d test conditions  
 
3.2  Liner  
 
any paper or paper board intend ed for covering another paper or pape r board material to become 
part of finished product.  
 
3.3 Test liner  
 
any liner made almost entirely from recycled pulp.   
 
3.4  Grammage  (substance )  
 
the mass of unit area of pape r or board  determined by the  specified method  of test and 
expressed in grams per s quare meter  and conditioned in accordance with TZS 82/ISO 187 . 
 
3.5 nominal  grammage (substance)  
 
the value of the mass per unit area used for reference purposes (i.e. when purc hasing material)  
 
3.6 actual grammage (substance)  
 
the value of the mass per unit area determined by testing  
 
3.7 sizing 
 
the addition of materials  in the pul p stock or on the surface of the sheet (surface  sizing) in  order 
to increase  paper resistance to the spontaneous penetration of aqueous liquids and its resistance 
to the surface spreadi ng of such liquids . 
 
3.8 cross  direction (CD)  
direction in the paper t hat is at right angles to the machine direction  
3.9 machine direction (MD)  
direction in a paper or a board parall el to the direction of travel of the  web on the paper or board  
machine  
3.10 defective  
set of test pie ces that fails in one or more respects to comply with the relevant requirements of 
the standard  
3.11 lot  
one or more nominally identical package of paper , the paper having been made on the  same 
equipment under essentially the  same conditions, from one manu facturer, and submitted at any 
one tim e for inspection and testing  
 
  
©TBS 20 19 – All rights reserved                                                                                                    3   4   Requirements  
 
4.1 General  require ment s  
 
4.1.1  Test liner board shall be made from 100% recycled fibre or in comb ination of any other 
material that wi ll ensure compliance with the requirements given in Table 1. It is also known as 
non- virgin kraft liner board . 
 
4.1.2 The surface shall be machine glazed (MG) or machine finished  (MF) . The surface should 
also be recept ive to printing.  Shall be resistant t o scuffing.  
  
 
4.1.3 The papers shall be free from  fibre bundle s, tears, shives, foreign matter, specks, holes, 
blemishes, creases and other  visible defects and shall be uniform in texture.   
 
4.1.4 The paper shall be o f reasonably good formation or unifor m formation, thickness and  
substance.  
 
4.1.5 The surface of the paper s hall be such as to accept the adhesives commonly used in the 
manufacture of corrugated board  
 
 
                                                     TBS/CDC10  (6259 ) P3   
 
©TBS 20 19 – All rig hts rese rved                                                                                                   1  
4.2 Specif ic requirement s 
 
4.2.1 Test liner shall be manufactured  as per preferred subs tances  given in Table 1.   
 
4.2.2 If a substance not given in Table 1 is  required, it shall be agreed  upon between the purchaser and the supplier and shall be selected so that 
it confo rms to the steps of increment given  below : 
Range of substance                                                                                 Steps of increment of substance  
g/m2                                                                                                                                                                g/m2 
110 - 150                                                                                                   10 
Above 150                                                                                                 25   
4.2.3 The minimum  allowable grammage  for test liner shall be 100 g/m2 and a tolerance  of ± 5 percent shall not be permitted on the nominal 
subst ance for 100 g/m2 when  tested in accordance  with TZS 81 .   
4.2.4 Test liner bo ard shall comply with the  relevant requirement given  in Table 1 wh en tested in accordance with the metho d specified therein.  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  ©TBS 2 019 – All rights reserved   Table 1 - Specific requirements for Test liner board  
 
 S/No.  Characteristic s Requirement s Test met hod 
(see clause 2) Product range  (Nominal grammage , g/m2) 
i. Gramm age, 
g/m2, ± 5 % 100 110 120 130 140 150 175 200 225 250 275 300 TZS 81  
ii. Moisture 
content, %, m/m  6 - 8 TZS 83  
iii.  pH, Min  5.0 ISO 6588 -1 
iv. R.C.T, KN/m , 
CD, Min 0.82 0.9 1.2 1.3  1.4  1.5  2.00 2.20  2.40 2.8 3.20 3.50 ISO 12192  
v. Bulk, cc/g   TZS 891 
vi. Burst Stre ngth, 
KPa, Min 210.5 242.2  284.4  313.8  323.6  333.4  353.0  372.7  411.8  451.1 480.5  588.4  TZS 79  
vii. Burst In dex, 
KPa.m2/g, Dry, 
Min 2.0 
viii. Burst In dex, 
KPa.m2/g, Wet, 
Min 1.3 
ix.. Cobb 60 
seconds, g/m², 
270C, T op side,  
Max      50 TZS 42 3  
x. Cobb 60  
seconds , 
g/m², 270C, 
Wide side , Max      50                                                     TBS/CDC10  (6259 ) P3   
 
©TBS 20 19 – All rig hts rese rved                                                                                                   1  
  
5 Dimensions  
 
The size of the roll s or sh eets shall be as agreed between  the purchaser  and the s upplier. The 
permissible tolerance on  the size shall be in accordance with  clause  4 of TZS 63 .  
 
 
5.1 Joints  
 
All joi nts shall be joined properly using a suitable adhesive . A suitable, nontoxic and 
environmentally friendly adhesive shall be used  and shall be adequately re sistant  to moisture a nd 
climatic  conditions . There shall be not m ore than three  joints i n a roll.  
  ©TBS 2 019 – All rights reserved   6   Sampling  
 
6.1 Sampling methods shall be carri ed out as prescribed in TZS 80 .  
 
6.2 Number of Tests  
 
Each of the rolls/packages selected f rom the lot shal l first be examined f or the requ irements given 
in 4 and 5. Then a  sheet of suit able size  from rolls s hall 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 
and 5.  Tests f or these characterist ics except pH shall be conducted individuall y on each of t he 
sample  sheet. A rol l 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 co mposite  
sample.  
 
6.3 Criteria f or conformity   
 
A lot shall be de clared as conf orming to  the requirem ents of this  standard if the requirement s in 
clause 4 are satisfied and if the number of defective roll and sheets does not exceed the 
acce ptance numb er. T his acc eptance number  shall depe nd 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 m ore sha ll be 
consider ed as defec tive.  
 
7   Tests methods  
 
Sample s of test liner board shall be co nditioned in accordance with TZS 82 /ISO 187.  
 
8   Packaging and marking  
 
8.1 Packaging  
 
8.1.1  Packaging requirements will vary according to the roll’s diamete r and w idth, Test liner board 
shall be packed in rolls on a core of 75 to 100 mm inside diam eter a nd in length equivalent to the 
width of paper, with a wooden or plastic plug at each extending to a minimum of 75 mm into the 
core.  
 
8.1.2 Test liner bo ard shall be packaged in s uitable mat erial that protects it from dust,  moisture 
and dirt duri ng transpo rtation, storage and normal use.  
 
8.2 Marking  
 
8.2.1 Each  roll shall be legibly and indelibly marked with the following:  
 
a) Description  and the paper gram mage (actual )   
b) Batch numb er or code number ; 
c) Machine direction ; 
d) Month and year of ma nufacture ; 
e) Diamet er an d width of roll;  
f) Weight in  Kg of the roll including the mass of the core and plugs ; 
g) Country of origin/manufa cture ; and 
h) Name and physical ad dress of the m anufacturer or local di stributor and registered 
trademark . 
     
 
 
©TBS 20 19 – All rights reserved