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ASTM D5814-02

Historical Revision

Standard Practice for Determination of Contamination in Recycled Poly(Ethylene Terephthalate) (PET) Flakes and Chips Using a Plaque Test

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1.1 This practice covers an indication of the quality of recycled transparent poly(ethylene terephthalate) by examination of a wafer or plaque formed by melting a representative sample and quenching it to prevent crystallization.

1.2 Specific contaminants and impurities such as aluminum particles, dirt particles, paper, and fibers are identified in the transparent wafer.

1.3 The overall color of the plaque is indicative of oxidizable contaminants such as ethylene-vinyl acetate (EVA) glue residue and the number of bubbles present in the plaque gives an indication of the moisture content of the sample.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section 8.

Note 1—There is no equivalent ISO standard.


Presence of paper, metal, or incompatible polymer contamination in poly(ethylene terephthalate) renders the recycled polymer unfit for use in secondary product manufacturing operations. This procedure is useful for identifying different types of contamination in recycled PET flakes.

SDO ASTM: ASTM International
Document Number D5814
Publication Date March 10, 2002
Language en - English
Page Count 2
Revision Level 02
Supercedes
Committee D20.70
Publish Date Document Id Type View
Nov. 1, 2023 D5814-23 Revision
Aug. 1, 2018 D5814-18 Revision
Dec. 1, 2010 D5814-10 Revision
March 10, 2002 D5814-95 Revision
March 10, 2002 D5814-02 Revision