Hot pressing veneer technology for wood-based panels
With the rapid development of the panel furniture industry, more and more households are using artificial boards to make customized furniture. The prices of ecological boards on the market vary, and the price of artificial boards depends not only on the raw materials used (such as board cores, decorative paper, adhesives, and adhesive boards), but also on the veneer technology used.
Below, let me share with you the knowledge of rapid hot pressing veneer for furniture panels, so that you can have more reference materials when choosing furniture panels.
The commonly used processing process for melamine veneers is the hot pressing process. However, it should be noted that during the hot pressing treatment, there are three processing factors that will affect its final effect. These three factors are the time of hot pressing, the temperature of hot pressing, and the appropriate pressure.
- Three elements of hot pressing process for adhesive paper
Hot pressing time: Its length depends on the curing rate and hot pressing temperature of the melamine resin, usually within 40-50 seconds. Long time can cause excessive resin curing, loss of elasticity, and easily cause cracks or internal stress in the product, resulting in cracks and warping during subsequent processing. If the time is too short and the resin curing is not sufficient, it is easy to produce adhesive board phenomenon, and it affects the physical and chemical functions of the product surface, affecting the durability of the product.
Hot pressing temperature: mainly plays a catalytic role in the chemical reaction of melamine resin, i.e. accelerates curing. According to the actual production requirements and the author’s experience, the temperature of the hot pressed plate is more suitable at 145-165 ℃. High temperature helps with demolding after pressing, and can shorten the hot pressing period and increase production. However, excessive temperature prevents the resin from uniformly flowing and solidifying, resulting in small pores on the board surface.
Appropriate pressure: It can ensure a good combination between the substrate and melamine paper. Under the action of appropriate temperature and pressure, the resin in melamine paper melts and solidifies, forming a closed and dense surface. It can also fill the unstable small pores on the substrate surface. When the pressure is generally 2.0-3.0MPa, it is recommended to use a low pressure as much as possible without affecting product quality, which is beneficial for the service life of equipment, hydraulic oil, and the internal structure of the substrate. But too low pressure affects the bonding strength and resin flow ability between the substrate and melamine paper.
In addition, boosting technology is an important factor affecting the machine operation cycle and product production efficiency of the entire equipment production line. According to the experience data of the same industry decoration panel process abroad, for every 0.1s increase in pressure boosting time, the hot pressing time of the board is roughly extended by 1s.
- Melamine paper veneer PK wood veneer
The veneer on the surface of panel furniture is becoming increasingly realistic, with a variety of patterns and fashionable styles. From the current market perspective, the veneer of panel furniture mainly consists of six materials: paper veneer, wood veneer, baking paint, crystal board, fireproof board, and molded board. Taking melamine paper veneer as an example, let’s take a look at its advantages together!
- Melamine paper veneer
Advantages: The user-friendly index is extremely high, and the price is quite affordable. It has rich color patterns and has been soaked in melamine resin solution without volatility in the air, making the furniture board less prone to deformation and has good corrosion and wear resistance.
Disadvantages: The edge sealing area is prone to delamination, and the surface only has a flat shape that cannot achieve a concave convex effect.
Suitable audience: A minimalist style with low requirements for aesthetic appearance and low budget, with a focus on practicality.
Shopping Tips
·Check the cutting surface of the board to ensure that the substrate is tight and thick;
·The surface is smooth and comfortable, with a smooth feel and even color;
·The edge sealing does not cause warping or leakage of adhesive, and has no irritating odor.
In terms of price, melamine paper veneer has an advantage, but compared to solid wood furniture, solid wood veneer is also a relatively affordable choice; Solid wood veneer is difficult to maintain, and the durability, waterproof, and high-temperature resistance of the veneer are much worse than those of melamine veneer. Consumers who are afraid of trouble in maintenance do not recommend choosing solid wood veneer panel furniture.
So, good equipment and materials require good craftsmanship in order to produce high-quality products. Have you understood the process of hot pressing veneer and paper veneer furniture?
