T/CNFPIA 3029-2023 Active

Scope: This document specifies the terms and definitions, classification, requirements, inspection methods, inspection rules, and marking, packaging, transportation, and storage for digital spray-painted solid wood composite flooring. This document applies to the production, sales, and inspection of digital spray-painted solid wood composite flooring. Main Technical Content: 4. Classification 4.1 By Structure a) Two-layer digital spray-painted solid wood composite flooring; b) Three-layer digital spray-painted solid wood composite flooring; c) Multi-layer digital spray-painted solid wood composite flooring. 4.2 By Surface Form a) Flat digital spray-painted solid wood composite flooring; b) Non-flat digital spray-painted solid wood composite flooring. 4.3 By Formaldehyde Emission Grade a) E0 grade digital spray-painted solid wood composite flooring; b) ENF grade digital spray-painted solid wood composite flooring. 4.4 By Applicability to Underfloor Radiant Heating a) Digital spray-painted solid wood composite flooring not suitable for underfloor heating; b) Digital spray-painted solid wood composite flooring suitable for underfloor heating. 4.5 By Locking Joint a) Digital spray-painted solid wood composite flooring with locking joints; b) Digital spray-painted solid wood composite flooring with tongue-and-groove joints. 5. Requirements 5.1 Appearance Quality The appearance quality of digital spray-painted solid wood composite flooring shall comply with the requirements in Table 1. Table 1: Appearance Quality Requirements Item Front Back Superior Grade Passed Grade Tongue and groove defects Not allowed No more than 15% of the board length Edge and corner defects Not allowed Long edge defects Not more than 30% of the board length and not more than 5mm wide, not more than 1/3 of the board thickness; Short edge defects Not more than 20% of the board length and not more than 5mm wide, not more tha