BS EN ISO 294-4:2019
Current
The latest, up-to-date edition.
Plastics. Injection moulding of test specimens of thermoplastic materials Determination of moulding shrinkage
Hardcopy , PDF
English
11-02-2019
Important note : Users cannot be edited or removed once added to your Multi user PDF.The British Standards InstitutionThis 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.
| Committee |
PRI/82
|
| DocumentType |
Standard
|
| ISBN |
9780580928659
|
| Pages |
18
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
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 ISO2577[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 ISO175[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.
| Standards | Relationship |
| EN ISO 294-4:2019 | Identical |
| ISO 294-4:2018 | Identical |
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