Plastics — Injection moulding of test specimens of thermoplastic materials — Part 4: Determination of moulding shrinkage

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Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English, French

Published date

12-20-2018

Publisher

International Organization for Standardization

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.

Committee	ISO/TC 61/SC 9
DocumentType	Standard
Pages	9
PublisherName	International Organization for Standardization
Status	Current
Supersedes	ISO 294-4:2001/Cor 1:2007 ISO 294-4:2001

Standards	Relationship
NEN-EN-ISO 294-4:2019 en	Identical
EN ISO 294-4:2003/AC:2011	Identical
BS EN ISO 294-4:2019	Identical
PN-EN ISO 294-4:2019	Identical
UNI EN ISO 294-4:2019	Identical
SS-EN ISO 294-4 : 2019	Identical
ÖNORM EN ISO 294-4 : 2019 03 15	Identical
EN ISO 294-4:2019	Identical
DS/EN ISO 294-4:2019	Identical
I.S. EN ISO 294-4:2019	Identical
SN EN ISO 294-4:2019	Identical
DIN EN ISO 294-4:2019-04	Identical
NS-EN ISO 294-4:2019	Identical
UNE-EN ISO 294-4:2019	Identical