ISO 20819-1:2020,Plastics — Wood-plastic recycled composites (WPRC) — Part 1: Specification.
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ISO 20819-1:2020 specifies the types and proportions of raw materials to be used for wood-plastic recycled composites (hereafter referred to as WPRC). It also specifies the health and safety requirements for WPRC and the methods to test these properties.
ISO 20819-1:2020 is applicable to WPRC which are primarily used as building materials.
This first edition of ISO 20819-1 cancels and replaces ISO 20819: 2018, which has been technically revised.
The main changes compared to the previous edition are as follows:
—the condition of method B (emission test chamber method) has been described more precisely;
—the former Annex a has been divided to annexes a and B.
Recycled material content
Indication of the recycled material content
The recycled material content of WPRC is defined as the ratio of the mass of the recycled materials used to the total mass of material, and shall be indicated as a percentage.
The numerical value of the recycled material content shall be rounded off to the nearest integer.

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