New Standard from Last Update.

1. SCOPE

1.1 This Standard prescribes the requirements, methods of sampling and test for ethylenevinyl acetate thermoplastic material and also establishes a system of designation for ethylene-vinyl acetate thermoplastic material.

1.2 The ethylene-vinyl acetate (EVA) plastics are differentiated from each other by a classification system based on appropriate levels of the designatory property like vinyl acetate content, melt mass-flow rate and on information about the intended application and/or method of processing, important properties, additives, colorants, fillers and reinforcing materials.

1.3 This standard is applicable to all ethylene vinyl acetate copolymers having a mass fraction of 3 percent to 50 percent (approximately 25 percent molar) of vinyl acetate. It applies to materials ready for normal use in the form of powder, granulesor pellets and to materials unmodified or modified by colorants, additives, fillers, etc.

1.4 From this standard, it is not intended to imply that materials having the same designation give necessarily the same performance. This standard does not provide engineering data, performance data or data on processing conditions which might be required to specify a material for a particular application and/or method of processing. If such additional properties are required, they are determined in accordance with the test methods specified in IS 17927 (Part 2).

1.5 In order to specify a thermoplastic material for a particular application or to ensure reproducible processing, additional requirements can be given in data block 6.

2. REFERENCES

The Indian standards and other publications listed below contain provisions which, through reference in this text, constitute provision of this standard. At the time of publication, the edition indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards listed below.

IS 2491 : 2013 Food hygiene - General principles - Code of practice (third revision)

IS 2828 : 2019/ISO 472 : 2013 Plastics - Vocabulary (second revision)

IS 9833 : 2018 List of colourants for use in plastics in contact with foodstuffs and pharmaceuticals (second revision)

IS 9845 : 1998 Determination of overall migration of constituents of plastics materials and articles intended to come in contact with foodstuffs - Method of analysis (second revision)

IS 13449 : 1992 Positive list of constituents of ethylene vinyl acetate (EVA) copolymers in contact with foodstuffs, pharmaceuticals and drinking water

IS 13601 : 1993 Ethylene vinyl acetate (EVA) copolymers for its safe use in contact with foodstuffs, pharmaceuticals and drinking water - Specification

IS 17927 (Part 2)/ISO 21301-2 : 2019 Plastics - Ethylene-vinyl acetate (EVA) moulding and extrusion materials: Part 2 Preparation of test specimens and determination of properties

ISO 1043-1 : 2011 Plastics - Symbols and abbreviated terms - Part 1: Basic polymers and their special characteristics

ISO 1043-2 : 2011 Plastics - Symbols and abbreviated terms - Part 2: Fillers and reinforcing materials

ISO 8985 : 2022 Plastics - Ethylene/vinyl acetate copolymer (EVAC) thermoplastics - Determination of vinyl acetate content