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ISO 294-4:2018

Dec 2018 Current

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Abstract

This document specifies a method of determining the moulding shrinkage and post-moulding shrinkage of injection-moulded test specimens of thermoplastic material in the directions parallel to and normal to the direction of melt flow. For the determination of shrinkage of thermosets, see ISO 2577[2]. Moulding shrinkage as defined in this document excludes the effects of humidity uptake. This is included in post-moulding shrinkage and thus in total shrinkage. For cases when post-moulding shrinkage is caused by the uptake of humidity only, see ISO 175[1]. Moulding shrinkage as defined in this document represents the so-called free shrinkage with unrestricted deformation of the cooling plates in the mould during the hold period. It is considered, therefore, as the maximum value of any restricted shrinkage.

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Standard from ISO
Published: December 20 2018
Edition: 3
Document type: IS
Pages
ISBN:

Publisher: ISO
Distributor: ISO
ICS: 83.080.20
International TC: ISO/TC 61/SC 9

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Adopted by: SN EN ISO 294-4:2019
Adopted by: NF EN ISO 294-4:2019
Revises: ISO 294-4:2001

ISO 294-4:2018

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ISO 294-4:2018

ISO 294-4:2001

ISO 294-4:1997

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ISO 294-4:2018

ISO 294-4:2001

ISO 294-4:1997

Abstract

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