EVA PUR edge Banding adhesive
Guide: Different PUR edge Banding adhesive products have different characteristics. Generally, glue with high viscosity has good initial adhesion, fast curing and high cleaning frequency of glue furnace; If the viscosity value is low, the reaction is relatively slow, but the initial viscosity is poor.
At present, people have higher and higher requirements for the quality of customized furniture in the whole house. In addition to the requirements for environment-friendly and waterproof edge bonding substrate, they also have higher and higher requirements for edge bonding, such as no glue line, no mold on glue line, edge bonding waterproof, high temperature resistance, etc.
In order to improve product quality, increase production efficiency and solve all after-sales problems, PUR edge Banding adhesive is imperative. The first manufacturers to use PUR edge bonding adhesive are mainly bathroom cabinets. With the in-depth understanding of PUR edge bonding adhesive by manufacturers, more and more customized manufacturers in the whole house also choose PUR edge bonding adhesive.
In order to help you understand PUR edge Banding adhesive more comprehensively, we summarize the questions that users have in daily life and share them.
What is the difference between PUR edge sealant and EVA edge sealant? PUR (PloyUrethane Reactive), referred to as polyurethane hot melt adhesive in Chinese, is a one component moisture curing reactive hot melt adhesive. Its curing principle is that the isocyanate grade in the adhesive reacts with water and hydroxyl to form a cross-linked network structure and reach the bonding strength. The cross-linked structure is irreversible after curing. Advantages: high temperature resistance, blister resistance, flux resistance, fine glue line, no mildew; Disadvantages: special glue melting equipment is required.
EVA (Ethylene Viny Acetate) is made by copolymerization of ethylene (E) and vinyl acetate (VA). Its principle is a process from solid to liquid and then to solid. It is only a physical reaction that is reversible after curing.
Advantages: low production cost and simple operation;
Disadvantages: water resistance, thick glue line, easy to mildew and blacken. Comparison of test results: A. Immersion test
B. Peel strength test
How much does the cost of PUR edge sealant increase?
Note: The cost of edge Banding increases by about 0.05 yuan per meter. From the perspective of product quality, stability and production efficiency, PUR edge Banding adhesive is more appropriate. Can it be modified on the existing old edge banding machine? The answer is yes. The old equipment to be reconstructed is divided into the upper glue furnace (the glue furnace is above the gluing wheel) and the lower glue furnace (the glue furnace is below the gluing wheel). The reconstruction of the upper glue furnace is simple and the cost is low. The figure shows the gluing furnace: Is it troublesome to clean the equipment when PUR edge Banding glue is used? PUR edge sealant is easy to clean when used. Some edge bonding machine glue melting furnaces are easy to disassemble, and some special PUR glue melting furnaces are easier to clean. PUR glue manufacturers can provide special cleaning agents and cleaning devices or tools. It is recommended to select PUR edge Banding adhesive with slow reaction to reduce the cleaning frequency.
Does the slow reaction of PUR edge Banding adhesive affect post-processing? PUR edge Banding adhesive will not affect post-processing. PUR edge bonding adhesive belongs to reactive hot melt adhesive. The final strength takes 3 days, but the initial adhesion is good, which does not affect the post-processing (such as slotting and punching). The tension increases with time.
How to select a good PUR edge sealant? Different PUR edge Banding adhesive products have different characteristics. Generally, glue with high viscosity has good initial adhesion, fast curing and high cleaning frequency of glue furnace; If the viscosity value is low, the reaction is relatively slow, but the initial viscosity is poor.
