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ČSN EN ISO 294-4 (640210)
Plastics - Injection moulding of test specimens of thermoplastic materials - Part 4: Determination of moulding shrinkage
Translate name
STANDARD published on 1.7.2019
The information about the standard:
Designation standards: ČSN EN ISO 294-4
Classification mark: 640210
Catalog number: 507412
Publication date standards: 1.7.2019
SKU: NS-953075
The number of pages: 24
Approximate weight : 72 g (0.16 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
The category - similar standards:
Annotation of standard text ČSN EN ISO 294-4 (640210):
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. 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. 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
Preview of the standard ČSN EN ISO 294-4 (640210)
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