What are the types of PUR hot melt adhesives

From the way of melt, PUR hot-melt adhesive machine can be divided into two types: pressure plate and melt cylinder.
Press disc type PUR hot melt adhesive composite machine: the press plate is made of aluminum alloy precision casting, CNC precision processing, and the surface of the heating disc is treated by deep penetration sintering of DuPont Teflon, which has the advantages of high coating strength and not easy to fall off. The glue on the heating plate is easy to remove, which can effectively prevent the carbonization of the glue, ensure the best colloid, and reduce the blockage of the glue conveying system. The heating plate is aluminum alloy heating plate. When used, the heating disc is pressed upwards and down into the glue barrel. The heating disc is above the gum. When the heating plate is heated, only one layer of glue is contacted with the heating plate, thus melting point and melting point. The lower part of the pail is not heated at this time, how much and how much it needs to melt during the production, so that the glue can be heated for a long time and deteriorate. The colloid and the air are isolated when the glue is used. There is a O type seal between the heating plate and the inner wall of the rubber barrel so that the molten liquid will not contact with the air, and the requirements for the use of the PUR hot melt adhesive are guaranteed.
Melt cylinder PUR hot melt adhesive machine: the heating part is a thick wall cylinder body, which is usually made of aluminum alloy. Small packages of glue (colloidal particles) are put into it and heated and melted. There is a lid on the cylinder