T/CNFPIA 3020-2022 Sintered board with single board composite

Scope

Scope: This document specifies the terms and definitions, classification, requirements, test methods, inspection rules, and marking, packaging, transportation, and storage of single-ply plywood composite panels. This document applies to single-ply plywood composite panels; Main technical content: 5. Requirements 5.1 Raw materials and panel assembly requirements 5.1.1 Raw material requirements The single-ply plywood used to form the core layer should be of the same species or have similar material properties, be of similar thickness, and comply with the requirements for rotary-cut plywood specified in LY/T 1599. The moisture content of the single-ply plywood should not exceed 12%. 5.1.2 Panel assembly requirements 5.1.2.1 Single-ply plywood composite panels are symmetrical structures, and the thickness of the core layer should not be less than 60% of the thickness of the finished panel. The symmetrical layers can be made of single-ply plywood, plywood, or high-density fiberboard with a thickness not exceeding 1.5mm, which are cut from the same species, have the same or similar material properties, and are produced by the same method (i.e., either rotary-cut or planed). When the symmetrical layers are single-ply plywood, they can be whole or composed of single-ply plywood with the same grain direction across the width. 5.1.2.2 Single-ply plywood composite panels consist of three, five, or multiple layers, with the grain direction of the face layer aligned with the length of the core layer. 5.2 Appearance quality 5.2.1 The product grade of single-ply plywood composite panels is divided according to their appearance quality, and the appearance quality should meet the quality requirements of the relevant product standards. 5.2.2 The appearance quality of PVC film-decorated single-ply plywood composite panels should meet the requirements of LY/T 1279-2020 section 5.2.3. 5.2.3 The appearance quality of impregnated film-decorated single-ply plywood c

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