CEN/TC 249/SC 1/WG 7 - Polyolefin materials

This document specifies the methods of preparation of test specimens and the test methods to be used in determining the properties of ethylene/vinyl acetate (EVAC) moulding and extrusion materials. Requirements for handling test material and for conditioning both the test material before moulding and the specimens before testing are given in this document.
This document gives procedures and conditions for the preparation of test specimens and procedures for measuring properties of the materials from which these specimens are made. Properties and test methods which are suitable and necessary to characterize EVAC moulding and extrusion materials are listed in this document.
The properties have been selected from the general test methods in ISO 10350-1. Other test methods in wide use for or of particular significance to these moulding and extrusion materials are also included in this document, as are the designatory properties specified in ISO 21301-1.
The methods of preparation and conditioning, the specimen dimensions and the test procedures specified this document are used in order to obtain reproducible and comparable test results. Values determined will not necessarily be identical to those obtained using specimens of different dimensions or prepared using different procedures.

1.1    This document establishes a system of designation for ethylene-vinyl acetate thermoplastic material, which can be used as the basis for specifications.
1.2    The types of ethylene-vinyl acetate (EVAC) plastic are differentiated from each other by a classification system based on appropriate levels of the following designatory properties:
a)    vinyl acetate content;
b)    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 document is applicable to all ethylene vinyl acetate copolymers containing from a mass fraction from 3 % to 50 % (approximately 25 % molar) of vinyl acetate.
It applies to materials ready for normal use in the form of powder, granules or pellets and to materials unmodified or modified by colorants, additives, fillers, etc.
1.4    It is not intended to imply that materials having the same designation give necessarily the same performance. This document does not provide engineering data, performance data or data on processing conditions which can 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 ISO 21301-2, if suitable.
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 5 (see 4.1).

The types of E/VAC plastics are differentiated from each other by a classification system based on appropriate levels of the designatory properties vinyl acetate content and melt flow rate and on information about intended application and/or method of processing, important properties, additives, colorants, fillers and reinforcing materials. Applies to all E/VAC copolymers containing from 3 % (m/m) to 50 % (m/m) of vinyl acetate. Is applicable to materials ready for normal use in the form of powder, granules or pellets and to materials unmodified or modified by colorants, additives, fillers, etc.

Specifies methods of preparation of test specimens and test methods to be used for the determination of the properties of ethylene/vinyl acetate moulding and extrusion materials. Specifies requirements for handling test material and for conditioning and gives properties and test methods which are necessary to characterize ethylene/vinyl acetate moulding and extrusion materials. Cancels and replaces the first edition.

ISO 1872-2:2007 specifies the methods of preparation of test specimens and the test methods to be used in determining the properties of polyethylene (PE) moulding and extrusion materials. Requirements for handling test material and for conditioning both the test material before moulding and the specimens before testing are given.
Procedures and conditions for the preparation of test specimens and procedures for measuring properties of the materials from which these specimens are made also are given. Properties and test methods that are suitable and necessary to characterize PE moulding and extrusion materials are listed.

Establishes a system of designation for polypropylene moulding and extrusion materials, which may be used as the basis for specifications. Polypropylenes are differentiated from each other by the levels of the designatory properties such as tensile modulus, impact strength and melt index includingly modifications by colorants, additives, fillers etc.. Cancels and replaces the third edition.