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Hot Melt Adhesive Sheet Molding
- Oct 18, 2017 -

Thermoplastic polymer-based hot melt adhesive, can be made of particles, film, rod and other forms. At room temperature, it is a 100% solids free of solvent. Hot melt of raw materials easy to obtain, the preparation process is relatively simple. In the formulation, polyethylene is used as the base material of the hot melt adhesive. The purpose of adding polyisobutylene and butyl rubber is to prevent the dispersion of polyethylene in the hot microcrystalline wax and to increase the cohesive strength of the hot melt. Polyisobutylene has high molecular weight and low dispersibility. It mainly plays the role of increasing the cohesive strength. The dispersibility of butyl rubber is low and the molecular weight is low, which mainly plays the role of plasticizing and anti-crystallization.Hot Melt Adhesive Sheet

Hot melt adhesive rod is ethylene - vinyl acetate copolymer (EVA) as the main material, adding tackifier and other ingredients with the solid-based adhesive, with fast bonding. High strength, anti-aging, non-toxic, good thermal stability, can be used for wood, plastic, fiber, fabric, metal, furniture, lampshade, leather, handicrafts, toys, electronics, electrical components, paper products, ceramics, Mutual solid, can be used for factories, families.

One of the melt reactor, one extrusion machine, two cooling tanks, one of the tractor. Process method, according to the proportion of hot melt adhesive bar formula will be good, added to the reactor. Raise the temperature to melt, stir evenly. And then heat the melted compound in the reactor to a certain temperature into the running extruder, according to the different kinds of rubber, choose the extruder extrusion speed.Hot Melt Adhesive Sheet

The extruder squeezes the hot melt into the tank through a drip-shaped extrusion hole on the extrusion head. The hot melt is instantly shaped by the cooling water, which is initially cooled by the first cooling water tank, Of the traction into the second cooling water tank, in the second cooling water tank in the sample to get a full cooling stereotypes, glue rods running speed in the tank by the extruder extrusion speed control, so that traction machine traction speed and extrusion Machine extrusion speed synchronization. Adjust the control of the extrusion speed, cooling the speed of the set, the speed of the relationship between the traction, and then a good bar to freeze into a finished product.Hot Melt Adhesive Sheet