IS 577 (1986): Upholstery leather

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IS 577 (1986): Upholstery leather [CHD 17: Leather, Tanning Materials and Allied Products]

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Indian Standard

SPECIFICATION FOR UPHOLSTERY LEATHER

( First Revision )

fS : 577 - 1986

Leather Sectional Committee, CDC 16

Chairman SHRI K. V. S. MURTHI

Representing Planning Commission, New Delhi

Membars

SHRI SYED ZAFAR ALI

Council for Leather Exports, Madras

SHRI RAJ GOPAL NAIDU ( Alternate )

SHRI A. K. BASTJ

Ministry of Defence ( DGOF )

SHRI N. R. DIOHE ( Alternate )

DEVELOP~AENTOFFICER, LEATHER Directorate General of Technical Development,

New Delhi

SHRI 0. P. DHAMIJA

Export Inspection Council of India, New Delhi

SHBI G. SUKUY~R ( Ahrnate )

DIRECTOR

Cmtr&ather

Research Institute ( CSIR ),

SHRI P. K. GHOSII SHRI G. S. JOHAL

Bata India Ltd, Calcutta Punjab State Leather Development Corporation,

GENERAL MANAQER,

PROJECT

(

1. Chandigarh Alternate )

SHRI N. KANNAN

Ministry of Defence ( R & D )

SARI M. K. AWASTH ( Alternate )

SHRI R. C. MALEOTRA

The State Trading Corporation of India Ltd,

New Delhi

Snar P. BHATTACHARYA ( Alternate )

SHRI S. NARAYA~JAN

.

Gordon Woodroffc Ltd, Madras

DR E. P. KANNIAPPAN ( Alternate )

SHRI B. AKBAR PASHA

Akbar Leathers Ltd, Madras

SHRI K. AMEENUR RAHIVIAN

Indian Finished Leather Manufacturers' and

Exporters' Association, Madras

SHRI V. P. NAIMUR RAHMAN ( Alternate )

SHRI S. RAJA

The Tanner, Bangalore

( Contintwd on page 2 )

@ CoPyright 1986

INDIAN STANDARDS INSTITUTION This publication is protected under the Indian dpyright Act ( XIV of 1957 ) and reproduction in whole or in part by any means except with written permission of the publisher shall be deemed to be an infringement of copyright under the said Act.

IS :577.1986

( Continued j?om paga 1 )

Members DR P. H. RAO

Represwting Government of West Bengal, Department of

Education. Calcutta

SHRI S. K. BASU ( Alternate ) SHRI S. R. SAHA

Miaistry of Defence ( DGI )

SHRI P. C. BANERJEE( Aldernat )

SERI M. K. SAKSENA

Leather Research and Testing Laboratory,

Directorate of Industries, Kanpur

SERI S. SAIAPATH

Tannery and Footwear Corporation of India Ltd,

Kanpur

SHRI S. MLJRQAN( Alf6rnQl6)

SHRI G. M. SHARIF

All India Small Scale Tanners' and Exporters'

Association, Madras

SHRI V. P. A. ABDUL RASEEED

( Allernatc)

Sax1 G. S. SHUliLA

Directorate of Marketing and Inspection. Faridabad

DR G. GOPALA RAO ( Aftsznutc)

SHRI S. P. SINUARAM

Development Commissioner, Small Scale Indus-

tries, New Delhi

SERI M. K. UDAYAVARMA ( Alfanatc )

SHRI R. SUBRAMANIAIK

Tata Exports Ltd, Bombay

SHRI A. L. ARJUNAN ( A~lernatc )

SHRI A. R. SWAMINATHAN

Bihar Finished Leather Ltd, Patna

PROJECTMANAGER ( TECH ) ( Alkrnatc)

SIIRI S. VENKATESWARAN

All India Skin and Hide Tanners' and Merchants'

Association, Madras

SHRI A. SUBRAMANIAN( Altcrnats)

SHRI SATISH CHANDER,

Director General, IS1 ( Ex-o@io M6mbcr )

Director ( Chem )

SHRIE. DEVENDAR Assistant Director ( Chem ), ISI

Medium and Light Substance Finished Leather Subcommittee, CDC 16 : I

Convsn6r DR T. S. RAN~ANATEAN

Cent;idFaather Research Institute ( CSIR ),

Mcmbars

SHRI A. L. ARJUNAN

Tata Exports Ltd, Dewas

SHRI R. SUBRAMANIAZ~( Ahernatc )

&RI ONKAR CHATTERJI

The National Tannery Co Ltd, Calcutta

SHRI PROBIRSEN ( &6faQl6 )

SHRI P. K. GHOSH

Bata India Ltd, Calcutta

SHRI P. BHATTACHARJI( Altynatc )

( Continusd on page 17 )

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Indian Standard

SPECIFICATION FOR UPHOLSTERY LEATHER

( First Revision )

ISr577-1906

0. FOREWORD

0.1 This Indian Standard ( First Revision ) was adopted by the Indian Standards Institution on 12 February 1986, after thedraft finalized by the Leather Sectional Committee had been approved by the Chemical Division Council. 0.2 The upholstery leather industry, like many other branches of the industry, is in a rapid state of progress, largely brought about by the ever increasing demands of the fashion conscious consumer and the acute competition from synthetics. Leather continues to be the ideal upholstery material due to its unique surface and other characteristics. 0.3 This standard was originally published in 1954. The present revision is mainly on the basis of recent technological developments. In this revision, requirements, such as oils and fats content, differential number, tightness of grain, crackiness of grain, tackiness and cracking have been deleted. It is expected that the new requirements on fastness properties, blocking resistance, flexural endurance and adhesion of finish which have been incorporated in this revision would give a better indication on the end-use of the material. 0.4 In this revision, three grades of upholstery leather based on the enduse have been prescribed. Grade I is recommended for furniture without upholstered arms and for gentle use. Grade 2 is recommended for furniture for general usage and Grade 3 is recommended for furniture subjected to severe weathering conditions. 0.5 For the purpose of deciding whether a particular requirement of this 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 IS : 2-1960*. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.

*Rules for rounding off numerical values ( revised ).

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IS:577 - 1986

1. SCOPE

1.1 This standard prescribes thr requirements, tests for upholstery leather.

methods of sampling and

2. TERMINOLOGY

2.1 For the purpose of this standard, 1960" and the following shall apply.

the definitions

given in IS : 1640-

2.1.1 Blocking - Unintentional adhesion between the finished surfaces of leather or between the finished surface of a leather and another surface.

3. GRADES

3.1 This standard specifies three grades of material namely Grade 1, Grade 2 and Grade 3 as indicated in Table 1 ( see also 0.4 ).

4. REQUIREMENTS

4.1 Raw Materials - The material shall be either dry, dry-salted or wet-salted hides in the form of evenly trimmed, whole hides. The hide shall be at least 2 square metres in area. It shall not have more than 4 cuts and holes and these shall not interfere with getting usable panels from the piece of leather at a distance more than 250 mm from the edges. The cuts may be either through or surface cuts of not more than 25 mm in length, in case of longitudinal cuts; and 25 mm in diameter, in case of round holes. These defects may include butcher cuts, pin or sore holes, healed up wounds, patches and scratches. Scratches due to thorn, barbed wire or horn shall be more than 50 mm long. A few widely scattered pox marks may be allowed.

4.2 Tanning - The material shall be either chrome tanned or combination tanned. At the end of tanning operation, before drying, suitable fungicides shall be incorporated for all types of leather in requisite eroportions. Fungicides used to promote mildew resistance in the leather shall be effective and harmless to skin. The leather shall show on growth of mildew when examined visually after the completion of the test, prescribed in LB : 1 of IS : 6191-19717.

4.2.1 The use of 0.05 percent of fungicide on dry mass basis of the hide is recommended.

___ *Glossary of terms relating to hides, skins and leather. tMethods of micro-biological, colour fastness and microscopical tests for leather.

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