High quality wood-based panels oblique edge banding – JEFIA High 45 ° oblique edge banding machine, quality control and testing
Original 2024-06-04 11:07
Compared to the common “horizontal and vertical” style of panel furniture, the design of sloping and curved edges is more eye-catching and can also meet people’s increasingly high aesthetic needs. Moreover, with the current trend of minimalist and light luxury styles, furniture design has also begun to simplify complexity, with various types of non pull handle and other diagonal and irregular designs emerging one after another, emphasizing the importance of reflecting quality from details.
There are many factors that affect the effectiveness of oblique edge sealing, especially the use of adhesives, which not only affect the texture of the board, but also have a significant impact on the lifespan of the board. Traditional inclined edge banding often uses EVA, and this adhesive edge banding product is mainly aimed at the direction of popularization and sinking markets. Therefore, if you want to target the high-end market, you need to do high-quality oblique edge sealing, and the selection of adhesive is the key.
01 Slope Edge Sealing and Adhesive Selection
The inclined surface of panel furniture is commonly seen in furniture designs such as cabinets without handles. The treatment of inclined surfaces not only has the function of sliding cabinet doors, but also makes the furniture more simple and high-end. But the slope design of the board also brings a problem, which is the slope edge sealing.
Another crucial point that cannot be ignored is the gluing process of edge sealing. If there are problems such as uneven or overflow during the gluing process, it will seriously affect the edge sealing effect and increase production costs. Moreover, the performance of the adhesive directly affects the bonding effect of the edge banding, so the quality of the coating and the selection of the adhesive play an extremely important role in the oblique edge banding process. However, for inclined seals that require high quality, it is often difficult for EVA hot melt adhesive to achieve the desired bonding effect. In this case, the appearance of PUR adhesive significantly improved this situation.
02 PUR glue and PUR coating process
Whether it is EVA or PUR, the basic principle of edge sealing is the same, which is hot melt. EVA adhesive is a ethylene acetate polymer hot melt adhesive, while PUR adhesive is a moisture cured reactive polyurethane hot melt adhesive.
EVA particles
PUR adhesive
PUR glue is usually a solid at room temperature and needs to be heated and melted into a liquid during use, while maintaining a high temperature during transportation and coating. Liquid PUR adhesive needs to be immediately adhered to the edge banding strip after being coated on the substrate by the adhesive roller. The bonded PUR adhesive will undergo a chemical cross-linking reaction with the substrate and the moisture in the environment.
After cross-linking and curing, PUR has a higher adhesive strength than EVA adhesive, so using less adhesive than EVA can achieve good bonding effect. The adhesive amount is less than about twice that of EVA adhesive, and the adhesive line is less obvious. And once the PUR adhesive reacts, it is irreversible and there will be no softening phenomenon at high temperatures, resulting in a long service life of furniture. Therefore, the use of PUR adhesive can effectively improve the quality and aesthetics of the inclined edge sealing of the board. For furniture manufacturing enterprises pursuing high quality and performance, using PUR for inclined edge sealing is a necessary choice.
PUR slanted edge sealing effect, no adhesive thread for more beautiful appearance
In addition, due to the reaction between PUR adhesive and water, when coating PUR, it is necessary to consider the specific atmospheric environment of the PUR adhesive in the closed and sealed molten state to avoid side effects and curing caused by contact with air. And in order to better control the curing reaction process of PUR adhesive, precise temperature control is required for the pressure plate, rubber conveying tube, and roller. Therefore, in order to achieve excellent PUR edge sealing effect, it is necessary to use a dedicated PUR coating system.
03 PUR Solution for Jethia Mechanical 45 ° Oblique Edge banding Machine
03-1 PUR Special Coating System
The PUR dedicated glue coating system adopts a suspended monomer glue pot design. One glue pot can simultaneously achieve the glue coating process on both oblique and straight surfaces, and can quickly apply glue to the surface of milled shaped plates in one go. The glue supply method adopts the direct supply of the glue shaft, with minimal storage space in the inner cavity, making it convenient to quickly replace PUR glue of different colors. Up to three colors of glue can be selected (white, natural, and dark), which can meet the requirements of high-quality and diversified inclined edge sealing processes.
PUR dedicated glue coating machine
PUR coated parts
03-2 PUR Slope Edge Sealing Advantages
Due to the lower usage of beveled edge technology compared to conventional edge sealing, if EVA adhesive is used as the adhesive, traditional EVA adhesive that has been in high temperature standby for a long time is prone to carbonization and discoloration at high temperature. When used again, there will be obvious problems with the white edge sealing adhesive line of the board, greatly reducing the quality of the board.
The temperature of PUR adhesive is relatively low, and the PUR specialized coating system adopts a direct supply adhesive supply, which can significantly reduce the visibility of the adhesive line. The cured PUR adhesive has higher adhesive strength and good stability, further ensuring the reliability of edge sealing quality.
PUR Special Coating System Product Display
04 Conclusion
The quality of furniture can be seen from the edge sealing details of customized furniture panels. Beveled edge sealing is a process that requires high equipment and materials in the manufacturing of panel furniture. PUR adhesive has high adhesive strength and excellent details, which can provide protection for edge sealing of oblique edges and irregular curved surfaces. It has gradually replaced traditional EVA hot melt adhesive in the market. Especially for furniture manufacturing enterprises pursuing high quality and performance, using PUR adhesive for oblique edge sealing is an excellent solution. If you would like to learn more about the PUR adhesive system for oblique edge sealing, you can send a private message in the background, and professional personnel will contact you.
