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ILNAS-EN ISO 294-4:2019
Edition
02/2019
Plastics - Injection moulding of test specimens of thermoplastic materials - Part 4: Determination of moulding shrinkage (ISO 294-4:2018)
Plastics - Injection moulding of test specimens of thermoplastic materials - Part 4: Determination of moulding shrinkage (ISO 294-4:2018)
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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.
Status
| Standard - Active |
Origin
| Technical Committee : |
| CEN/TC 249 : Plastics |
Implementation
| start of the vote on the project | 09/08/2018 | date of ratification (dor) | 18/01/2019 | |||
| end of the vote on the project | 03/11/2018 | date of anouncement (doa) | 31/05/2019 | |||
| start of the vote on the final project | 09/10/2019 | date of publication (dop) | 31/08/2019 | |||
| end of the vote on the final project | 04/12/2019 | date of withdrawal (dow) | 31/08/2019 |
|
Publication Official Journal
of the Grand-Duchy of Luxembourg |
21/03/2019 |
| Reference | Mémorial A N° 169 |
Relations
| Relations to older standards |
| ILNAS-EN ISO 294-4:2003/AC:2011 |
| ILNAS-EN ISO 294-4:2003 |
| Relations to international standards |
| ISO 294-4 |
| ISO 294-4:2018 |
International Classification for Standards (ICS codes) :
| 83.080.20 : Thermoplastic materials |
