KT boards can be divided into cold composite and hot composite from relatively mature production processes. The products produced by these two different processes are called cold plates and hot plates.
The production process of the cold plate is first to make the core foam, but since the cold plate is mostly a single-layer core, double foaming is required, and the first foaming thickness is generally about 3 mm, and after half a month of ripening, After the second foaming, the core is placed on the device and foamed to about 5 mm. After the second foaming, the adhesive can be directly applied. However, there is a problem here. The cold plate often foams. Why? Because the core curing period is too short, there is a problem with the neutral glue or the glue is faulty. After the board is formed, there is direct sunlight or ultraviolet light.
The production process of the hot plate is firstly to foam the ps particles into a core of about 2 mm by means of equipment. At this time, the core of the core is placed at a normal temperature for about half a month, and then the exhaust of the core is discharged, and then the veneer is placed. It is placed on the equipment at the same time put two large rolls of stretched PS dough and two large rolls of matured core, through the mold of the equipment, they are fused together to form a whole board. Finally, the whole package is cut into a certain length when the board is cut on the equipment, and the production is completed. However, the hot plate also has foaming reasons, the curing period of the core is short, the PS surface of the surface is too thin, and the screen is glued. The glue reacted with the PS surface for 3 reasons.