IS 1060 : Part 6 : Sec 3 : 2015 / ISO 5626 : 1993 Methods of Sampling and Test for Paper and Allied Products Part 6 Methods of Test for Paper and Board Section 3 Determination of Folding Endurance of Paper

ICS 85.060                         CHD 15

Reaffirmed 2020


This Indian Standard (Part 6/Sec 3) which is identical with ISO 5626 : 1993 ‘Paper — Determination of folding endurance’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Paper and Its Products Sectional Committee and approval of the Chemical Division Council.

This test method which is included in IS 1060 (Part 1) was originally published in 1956 and subsequently revised in 1966. Due weightage was given to the then existing International Standards prevailing in different countries while preparing this test method.

Considering the importance of following the uniform practices globally, the committee felt that it would be more appropriate to prepare this standard test method by adoption of ISO 5626.

While adopting ISO Standards on different test methods it is observed that there are three broad based titles given by ISO namely ‘Paper, board and pulps’, ‘Paper and board’ and ‘Pulps’ under which most of the test methods are published. The three already published Indian Standards namely IS 1060 (Parts 1, 2 and 3) ‘Methods of test for paper and allied products’ are widely used and known to all concerned. There is IS 6213 series of standards published for ‘Methods of test for pulps’. Therefore, to maintain the continuity and also to find the relevant test methods instantly, all the adopted standards on test methods are being published under the following titles:

IS No. Tilte

1060 Methods of sampling and test for paper and allied products:

(Part 4) Methods of test for paper, board and pulps

(Part 5) Methods of test for paper and board

(Part 6) Methods of test for paper

(Part 7) Methods of test for board

6213 Methods of test for pulp

All the adopted standards are also being accommodated as different sections of each series based on their titles.

The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear, referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (,) has been used as a decimal marker, while in Indian Standards, the current practice is to use a point (.) as the decimal marker.

In this adopted standard, reference appears to certain International Standards where the standard atmospheric conditions to be observed are stipulated which are not applicable to tropical/subtropical countries. The applicable standard atmospheric conditions for Indian conditions are 27 ± 2°C and 65 ± 5 percent relative humidity and shall be observed while using this standard.