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Norm

ISO 294-4:2018

Issue date: 2018 12 20

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

This document specifies a method of determining the moulding shrinkage and post-moulding shrinkage of injection-moulded test specimens of thermoplastic material in the di...
Valid
Publisher:
International Organization for Standardization
Format:
Digital | 9 Pages
Language:
English

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.

ISO 294-4:2018
2018 12 20
Plastics — Injection moulding of test specimens of thermoplastic materials — Part 4: Determination o...
Norm
ISO 294-4:2001/Cor 1:2007
2007 11 19
Plastics — Injection moulding of test specimens of thermoplastic materials — Part 4: Determination o...
Norm
ISO 294-4:2001
2001 12 20
Plastics — Injection moulding of test specimens of thermoplastic materials — Part 4: Determination o...
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ISO 294-4:1997
1997 04 17
Plastics — Injection moulding of test specimens of thermoplastic materials — Part 4: Determination o...
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ISO 294:1995
1995 02 09
Plastics — Injection moulding of test specimens of thermoplastic materials
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ISO 294:1975
1975 05 01
Plastics — Injection moulding test specimens of thermoplastic materials
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