A solventless thermoplastic rubber. Hot melt when heated to a certain temperature,from solid state into the molten state, when applied to the artificial substrate surface oredge material, cooling into solid state, the sealing material and the substrate are bonded together. The selection and use of edge hot-melt adhesives, must pay attention to the following aspects: edge hot-melt adhesives EdgebandHot-MeltA dhesa dedicated to artificial plate edge sealing adhesive.
Different base material edge hot-melt adhesives 1 edge hot-melt adhesives according to the base materials can be divided into three categories: 1EVA ethylene vinyl acetate copolymer resin hot melt adhesive, the hot melt adhesive can be divided into the packing or no packing two categories. Using EVA as base material is edge hot-melt adhesives production technology is the most common, the main limitation is the poor thermal resistance properties. The use of environmental temperature furnitureEVA hot melt adhesive edge is not higher than 120 ℃; 2POLYA MIDE polyamide hot melt adhesive characteristics of the base material, the hot melt adhesive with goodheat resistance and fast curing, the main disadvantage is the price expensive. 3HMPU polyurethane hot melt adhesive base material, a kind of hot melt adhesive is the best performance, high quality plate edge guarantee. The price is expensive, need to usespecial method. 2 edge hot-melt adhesives viscosity edge hot-melt adhesivesviscosity does not directly reflect the performance of adhesive. In general, the edgehot-melt adhesive viscosity more high initial adhesive strength, the better, but the coating performance worse. Low viscosity hot melt adhesive glue is smaller, betterwetting properties. Hot melt adhesive some low viscosity curing speed quickly, may also have a high initial adhesive strength. For the poor quality of particleboard, hot melt adhesive edge need to use high viscosity, this is because the hot melt adhesiveof high viscosity and poor mobility, hot melt adhesive with low viscosity glue not as easily into the pore of chipboard edge, so that the hot melt adhesive can be fullycoated on the plate edge. Density edge hot-melt adhesives 3 edge hot-melt adhesives of density in 0.95-1.6g/cm3 density depends on how much more filler filler,greater density as the plate edge has reached the requirements of the coating area iscertain, so no padding hot melt adhesive coating weight per unit length low densitythan the packing hot melt adhesive. And because the bonding properties of non fillerhot melt adhesive is better, to achieve the same edge effect, use no less than a fillerfiller hot melt adhesive hot melt adhesive is likely to reduce the amount of glue, edge banding machine must have a good coating system. The softening point andtemperature softening point 4 edge hot-melt adhesives is heat-resistant performanceedge hot-melt adhesives index, higher softening point, edge hot-melt adhesives is not easy to melt. At the same time, softening point is also an important aspect to measuretemperature resistant performance of panel furniture. In Europe, there has been atesting method for heat resistance of the plate edge, heat resistance of panel furniture also presents standard. France, Germany and Italy have been no large-scale production of low softening point edge hot-melt adhesives, but domestic manufacturers including Taiwan manufacturers still produce and provide to the domestic market, because the domestic furniture manufacturers and consumers offurniture, especially the heat resistance of kitchen furniture can not pay enough attention to. EVA hot melt adhesive softening point is generally in the range of 90-135 ℃. The use of temperature edge hot-melt adhesives refers to cots edge gluingtemperature, only under this temperature, hot melt adhesive strength can reach the best. Some display edge banding machine temperature and actual temperature has a considerable error, so periodically check the temperature of the machine.Temperature is too high will make the edge banding machine, glue appeared fumy phenomenon; carbonization, too low, and can make the adhesive strength. The feeding speed edge hot-melt adhesives open time and open time of edge banding machine 5 edge hot-melt adhesives of edge banding machine to the edge with thepressure onto the substrate for a period of time before the opening time of the glue,glue kind with different. Edge banding machine is closely related to the feed rate and the time of opening, two were selected and used in the hot melt adhesive is very important. Hot melt adhesive, sealing machine fast feeding must choose open time is short and hot melt adhesive, choose open for a long time. For most manual edge banding machine, the manual operation, the opening time of hot melt adhesive forlong enough, in order to bending components fengbian. Hot melt adhesive coating ingeneral edge belt, in order to ensure the quality of the edge, the domestic manualedge banding machine but also a double-sided adhesive solution. Manual edge banding machine plastic tank temperature control in 180 ℃ Germany BRA NDT manual edge banding machine can be heated to 200 ℃ so be used in hot melttemperature below 180 ℃. If the manual edge banding machine seal thickness below 0.2mm thin PVC then use temperature of hot melt adhesive must be under 120 ℃. Forautomatic or semi automatic edge banding machine, because the substrate and edgebelt after coating and pressing, will soon be on edge belt end truncated, upper and lower edge trimming and polishing machine, edge banding belt to withstand mechanical cutting force in the process, so the requirement of hot melt adhesive is open for a short time and high initial bonding strength. Especially for the edge like athick wood strip material thicker due to the cutting force is very large, if the initial bonding strength of hot melt adhesive is not enough, plate and edge belt will crack. In general, the domestic use of automatic edge banding machine feeding speedbetween 8-25m/min, edge hot-melt adhesives using temperature at 200 ℃.