ISO 20819-2:2023 プラスチック — 木材プラスチック再生複合材 (WPRC) — Part 2: 試験方法 | ページ 2

Foreword

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This document was prepared by Technical Committee ISO/TC61, Plastics, Subcommittee SC11, Products.

A list of all parts in the ISO 20819 series can be found on the ISO website.

Introduction

Wood-plastic composites (WPC) are composites of natural fibres such as wood and various plastics. ISO 16616 has been established as the ISO for such products. WPC is commonly used for exterior materials such as wood decks and louvers, and interior materials such as doors and flooring.

To protect the global environment, it is required to promote the recycling of plastics. WPCs that use such recycled plastics are called wood-plastic recycled composites (WPRC). The quality of recycled plastics such as WPRC is lower than that of virgin plastics, and there are concerns about the inclusion of harmful substances, which may make consumers hesitant when choosing WPRC using recycled plastics. On the other hand, it is also necessary to provide appropriate information to consumers who want to purchase environmental-friendly products with a higher recycling rate.

ISO 20819-1 is a calculation method of recycling ratio, labelling, and safety test. Safety testing for hazardous substances is necessary to dispel consumer concerns about contamination with hazardous substances when using recycled materials. ISO 20819-2 provides a test method for product durability that is expected when recycled plastic is used. There has never been an ISO standard that specializes in using recycled plastics in this way. It also stipulates test methods for cellular products not mentioned in ISO 16616.

This document has been established so that consumers' anxiety can be reduced by conducting the tests specified in this document, and environmental-friendly and safe products using recycled plastic can be selected.

1 Scope

This document defines the test methods for fundamental physical properties and durability required for wood-plastic recycled composites (hereinafter called WPRC) stipulated in ISO 20819-1.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 472 and the following apply.

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