This article analyzes the quality indicators of particle board based on the characteristics of high-quality customized home products, and puts forward quality suggestions for particle boards suitable for high-quality customized home products.
Particle board specifications and deviations
The design style of high-quality customized homes is gradually shifting from European and American style to light luxury style. Light luxury style attaches great importance to the overall atmosphere and relevance of the space. Its customized home products are generally larger in size and require larger format specifications of the boards to meet the design and processing requirements. Require.
Currently, commonly used format sizes include 2440mm×1220 mm, 2800mm×1220 mm, 3000mm×1220mm, etc. It is expected that there will be demand for more format sizes in the future.
In terms of thickness deviation, the processing accuracy of high-quality customized home product panels is usually controlled within 0.1mm, but the thickness deviation specified in GB/T4897-2015 is ±0.3mm, which cannot meet the requirements of use. Currently, the thickness deviation of particleboards used by custom home furnishing manufacturers is mostly controlled within ±0.15 m
In terms of length and width deviation, since custom home furnishings mostly maximize the utilization of panels and have extremely small trimming allowances, corporate standards usually follow positive tolerance requirements, that is, 0 to +4 mm.
Particle board appearance requirements
According to the application of particle board in customized homes, the appearance quality should also have an important indicator, that is, whether there are small pits with a diameter of 0.2 to 0.5 mm on the board surface. Because once such pits appear on the particle board surface, small white spots will appear after the impregnated adhesive film paper is used to veneer, which will affect the decorative effect.
To check whether there are small dents on the board surface, you can use chalk to mark the board surface. The specific operation is as follows: place the particle board base material on a flat ground, lay the chalk flat on the board surface, and apply relatively even pressure with your hands. Sliding makes the chalk form continuous drawing marks on the board surface, and determines its defects based on the depth or continuity of the drawing marks and relevant experience.
Particle board physical property requirements
Moisture content
The moisture content of particle board will affect the curing period of subsequent decorative panels. Use particle board with a low moisture content to make customized home products. After installation, as the moisture content of the board increases and balances, the board will expand, causing quality problems such as deformation of the side panels and poor opening and closing of the door panels.
GB/T 4897-2015 has relatively broad requirements for moisture content (3.0% ~ 13.0%). According to a large number of tests, in areas with high humidity in the south, the moisture content of particle boards is controlled at 8.0% ~ 10.0%, and in dry northern areas, the moisture content is controlled at 6.0% ~ At 8.0%, the size of the customized home panels processed is relatively stable.
Water absorption thickness expansion rate
The water absorption thickness expansion rate is an important indicator reflecting the dimensional stability and water resistance of particle boards. GB/T 4897-2015 stipulates specific requirements according to particleboard classification. Among them, furniture-type particle boards are also divided into three categories according to the use environment, namely furniture-type particle boards used in dry conditions, furniture-type particle boards used in humid conditions and furniture-type particle boards used in high-humidity conditions. These three types of furniture-type particle boards 18 mm thick particleboard index requirements are shown in the table below.
| Type | index |
| P2 (Furniture-type particle board used in dry conditions) | 2h≤8% |
| P6 (Furniture-type particle board used in wet conditions) | 24h≤14% |
| P10 (Furniture-type particle board used in high humidity conditions) | 24h≤12% |
Internal bonding strength
Internal bonding strength refers to the bonding strength of the internal shavings of the particlecboard. Unqualified internal gluing strength can easily cause quality problems such as lamination delamination and core layer shavings falling off during cutting.
In GB/T4897-2015 and GB/T15102-2017 <<Impregnated Adhesive Film Paper Decorated Fiberboard and Particleboard>>, it is stipulated that the internal bonding strength of P2 type 18 mm thick particle board and 18 mm thick impregnated adhesive film paper faced particle board are equal. ≥0.35 MPa.
Screw holding force
Customized home furnishings have become popular in light luxury series products in recent years. The materials of ultra-high flat-panel doors are also rich and diverse. The weight of some door panels has increased significantly, which requires higher screw-holding strength for the stressed side panels.
GB/T4897-2015 requires that the screw holding force on the board surface is ≥900 N and the board edge is ≥600 N, which cannot meet the use requirements of this type of side panel. At present, most customized home furnishing companies still conduct acceptance inspections according to the requirements of board surface ≥ 1 100 N and board edge ≥ 700 N to ensure that custom home furnishings are both strong and durable.
Environmental protection indicators
The national standard GB/T 39600-2021 <<Classification of Formaldehyde Release from Artificial Panels and Their Products>> has been implemented. This standard divides formaldehyde release into 3 levels, namely E1≤0.124 mg/m3, E0≤0.050 mg/m3 and ENF. ≤0.025 mg/m3. The implementation of this standard has further promoted the environmental protection upgrade of my country’s wooden home materials and promoted the high-quality development of high-quality customized home products.
In terms of TVOC, although there is no requirement for this indicator in the national standard for particleboard, HJ571-2010 <<Technical Requirements for Environmental Labeling Products of Artificial Panels and Their Products>>stipulates the release amount of total volatile organic compounds (TVOC) of artificial panels and their products. It shall not exceed 0.50mg/(m2·h) (72h). High-quality customized homes should detect and control TVOC indicators in accordance with HJ 571-2010 standards.
Summarize
This article analyzes the specifications, dimensions, appearance quality, physical and mechanical properties and environmental performance requirements of high-quality customized home particle board substrates. High-quality development is the theme of China’s economic and social development during the “14th Five-Year Plan” and beyond. It is recommended that the customized home furnishing industry work together to unite upstream base material and other raw material companies to control the quality of base materials and other raw materials, and vigorously promote the development of the entire industry. High-quality development will make the industry stronger and bigger.