GB/T 38467-2020 in English
VALIDTechnical specification of modified wood for furniture
- Issued on:2020-03-06
- Implemented on:2020-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
| Standard No: | GB/T 38467-2020 |
| Document status: | VALID |
| Title in English: | Technical specification of modified wood for furniture |
| Title in Chinese: | 家具用改性木材技术条件 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2020-03-06 |
| Implemented on: | 2020-10-01 |
| ICS Classification: | 97.140-Furniture |
| Chinese Classification: | Y82-Furniture accessories |
| Professional Classification: | GB-National Standard |
| Related Keywords: | modified wood
heat-treated wood wood length heat-treated wood needs medium-temperature heat-treated wood |
| Related Topics: | modified
dense wood wood densification furniture wood country conditions Modified anticorrosion Modification technology wood technology Modification technology GBT38467 GB/T 38467-2020 furniture wood slitting machine |
《GB/T 38467-2020家具用改性木材技术条件》由TC480（全国家具标准化技术委员会）归口，主管部门为中国轻工业联合会。
Introduction
Analysis of the core content of the standard
| Technology type | Treatment temperature/method | Key performance indicators | Applicable scenarios |
|---|---|---|---|
| Heat-treated wood | 160-250℃ (high temperature) 120-160℃ (medium temperature) | Moisture content 5-10% Shrinkage rate ≤3% | Indoor and outdoor furniture |
| Impregnated modified wood | Pressure impregnation process | Penetration rate ≥ 85% Formaldehyde ≤ 0.124mg/m³ | High humidity environment |
| Flame retardant wood | Chemical flame retardant treatment | Combustion performance level 2 GB20286 standard | Public places |
Details of key technical requirements
Material defect control
The standard divides modified wood into three grades, among which first-class products require: live knot size ≤ 20% of the board width, ≤ 5 knots within 1m, no decay and wormholes allowed, and crack length ≤ 10% of the wood length.
Physical and chemical performance indicators
- Dimensional stability: width shrinkage rate ≤3% (indoor use), volume swelling rate ≤8%
- Durability: outdoor materials must meet GB/T13942.1 corrosion resistance level II
- Environmental protection requirements: formaldehyde emission must be ≤0.124mg/m³ (1m³ climate chamber method)
Standard implementation recommendations
Selection guide
For bathroom furniture, it is recommended to choose resin modified wood (penetration rate ≥90%); for children's furniture, it is preferred to use acetylated wood (lowest formaldehyde emission).
Key points of quality control
- The carbonization uniformity of heat-treated wood needs to be monitored (color difference ≤ ΔE3)
- Impregnation treatment should be subject to profile permeability test
- Each batch of flame-retardant wood needs to be tested for combustion performance
Technology evolution analysis
This standard classifies medium-temperature heat-treated wood (120-160℃) separately for the first time, and adds 4 new modification methods compared to the 2009 version, reflecting the three major trends in industry technology development: low-temperature modification, environmentally friendly agents and composite treatment technology.
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