IS 6191 : Part 5 : 2024/ISO 11644 : 2022 Methods of Micro-Biological, Colour Fastness and Microscopical Tests for Leather - Part 5 Test for Adhesion of Finish

ICS 59.140.30

CHD 17

NATIONAL FOREWORD

This Indian Standard (First Revision) (Part 5) which is identical to ISO 11644 : 2022 'Leather - Test for adhesion of finish' issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Leather, Tanning Materials andAllied Products Sectional Committee and approval of the Chemical Division Council.

IS 6191 : 1971 'Methods of micro-biological, colour fastness and microscopical tests for leatherprescribes various microbiological test methods, colour fastness test methods and test methods for the preparation of microscopical slides for assessment of leather, hides and skins'.The Committee responsible for formulating this standard has decided to harmonize the methods of test prescribed in IS 6191 with those prescribed in ISO/IULTCS standards. Accordingly, the committee decided to retain IS 6191 and publish the harmonized/ adopted test methods published by SO/IULTCS in various parts of IS 6191 as this standard is widely recognized by the Indian leather Industry

This Standard was first published in 2018 as an identical adoption of ISO 11644 : 2009. The first revision of this standard has been brought out in order to align it with the latest version ofISO 11644 : 2022 In this revision following modifications have been done.

a) Clause 1 addition in the Scope of exclusions from the field of application of unpigmentedarticles orarticles without a continuous coating layer;

b) Clause 7 modifications of conditioning of test specimens and specimens bonding time; and

c) Clause 9 modifications in the test report.

This Indian Standard is published in several parts. The other parts in this series are:

Part 1 Colour fastness to water spotting

Part 2 Colour fastness to water

Part 3 Colour fastness to machine washing

Part 4 Colour Fastness to cycles of to-and-fro rubbing

Part 6 Colour fastness to perspiration

This part specifies a method for measuring the adhesion of the finish to leather or the adhesion betweentwo adjacent layers of the finish.

!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 beread as 'IndianStandard'; and

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