Standard Guide for Description of Polymer Pellet Defects

Importancia y uso:

4.1 This guide is intended to provide terminology for both suppliers and users of polymer pellets to ensure mutual understanding in discussions concerning pellet defects. It is not an absolute standard but is to be referred to when issues with the quality and/or description of the polymeric materials arise.

4.2 The guide is categorized according to the best fit for the term and its description for ease of finding certain description types.

4.3 Some terms within this guide do not apply to all resin types. It is the user’s responsibility to determine if the term and its subsequent definition are applicable to the material in question.

4.4 Other terminology relating to polymers that are not included in this document can be found in additional standards such as Terminology D883.

4.5 Test Method D6290 can be used for the instrumental measurement of discoloration in plastics, including pellets, and of the degree of yellowness (or change of degree of yellowness) under daylight illumination of homogeneous, nonfluorescent, nearly colorless transparent or nearly-white translucent or opaque plastics.

Subcomité:

D20.92

Volúmen:

08.03

Número ICS:

83.080.01 (Plastics in general)

Palabras clave:

color; contamination; defect; geometry; integrity; pellet; shape; size;