In the production of panel furniture, the edge sealing process may seem simple, but a slight mistake can lead to problems such as glue drawing, carbonization, or edge warping. This not only affects the aesthetics of furniture, but may also increase rework and after-sales costs. For furniture factories that pursue high quality, it is particularly important to understand the reasons for wire drawing and carbonization and take the correct measures.
1、 Reasons and solutions for wire drawing phenomenon
Edge sealing adhesive wire drawing usually refers to the phenomenon of excessive elongation of the adhesive during the edge sealing process, without forming a complete adhesive line. Common causes of wire drawing include:
1. Excessive glue temperature: When the glue temperature is too high, its fluidity increases and it is easy to be stretched by the pressure wheel during edge sealing, forming fine threads.
2. Excessive edge sealing speed: The board and edge sealing tape run too fast, causing the glue to be pulled before fully bonding, resulting in wire drawing.
3. Colloidal quality issues: Low quality hot melt adhesives with excessive fillers or uneven flowability are also prone to wire drawing.
resolvent:
Heat the glue according to the temperature recommended by the hot melt adhesive manufacturer to avoid high-temperature melting;
Adjust the operating speed of the edge banding machine to allow sufficient time for the adhesive to penetrate the surface of the board;
Choose hot melt adhesive with uniform fluidity and stable quality, such as Minli unfilled EVA hot melt adhesive or PUR hot melt adhesive, to reduce the occurrence of wire drawing.
2、 Reasons and solutions for carbonization phenomenon
Carbonization refers to the phenomenon of hot melt adhesive coking, blackening, and even producing odors under high temperature. Common reasons include:
1. Excessive or uneven temperature in the glue pot: Prolonged high temperature heating of the glue will cause carbonization;
2. Colloids melt repeatedly for a long time: glue heated multiple times is prone to aging, reducing adhesion and causing coking;
3. Equipment malfunction or untimely cleaning: Residual adhesive volume carbon in the glue pot or hose, affecting the quality of new adhesive.
resolvent:
Strictly control the temperature of the glue pot to avoid prolonged overheating;
Regularly clean the glue pot, glue conveying system, and pressure wheel to prevent carbon buildup;
Choose high-temperature stable products provided by hot melt adhesive manufacturers, such as Minli PUR hot melt adhesive, which has high temperature resistance and stable curing performance, reducing the risk of carbonization.
3、 Collaboration between Process and Equipment
Drawing and carbonization are not only related to glue, but also closely related to equipment debugging. Uneven pressure on the edge banding machine, worn pressure wheels, or malfunctioning temperature sensors in the glue pot can all cause edge banding problems.
Suggested companies:
Regularly check the parameters of the edge banding machine equipment to ensure that the temperature, pressure, and speed match;
Train operators to master the correct operating procedures and reduce human errors.
4、 Choose a professional hot melt adhesive manufacturer
High quality hot melt adhesive is the fundamental guarantee for solving edge sealing problems. Minli Hot Melt Adhesive has been focusing on the research and development of furniture edge sealing adhesive for many years. We provide EVA unfilled hot melt adhesive and PUR edge sealing adhesive, which have the characteristics of uniform fluidity, high temperature resistance, and strong adhesion. We can also provide customized solutions according to the type of board and production process. Using Minli hot melt adhesive can effectively reduce wire drawing and carbonization phenomena, improve furniture edge sealing quality and production efficiency.
The issues of furniture edge banding adhesive wire drawing and carbonization are not accidental, but the result of the combined effects of adhesive properties, equipment parameters, and process management. Mastering correct temperature control, speed, pressure management, and selecting high-quality hot melt adhesive are key to improving edge sealing quality, reducing rework, and increasing customer satisfaction. Minli hot melt adhesive provides stable performance and professional technical support to help furniture enterprises achieve efficient and high-quality production.