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ISO 294-4:2018

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Zusammenfassung

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.

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  • Standard von ISO
  • Ausgabedatum:
  • Edition: 3
  • Dokumenttyp: IS
  • Seiten
  • Herausgeber: ISO
  • Lieferant: ISO
  • ICS: 83.080.20
  • Internationales Komitee: ISO/TC 61/SC 9

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