EPS molding equipment: sheet metal forming machine, vacuum sheet forming machines, vacuum thick sheet metal forming machine,EPS Batch pre-expander machine.
EPS manufacturing process: Generally speaking we always refer molding process, in fact, in terms of EPS molding process also involves raw materials, advance mechanism, pipeline technology and system matching, ultimately reflected in the molding process.
1. raw materials:
1) fast material and standard material process control
Fast material: molecular weight, volatile low, mainly used for automatic machines. Which itself contains less foaming agent, curing time is short. Advantages are: the heating time is short, short cooling, short cycle times, save energy, improve production efficiency.
Under normal circumstances, since less foaming agent, must be heated in the shortest possible time, make full use of a small amount of foam blowing agent grain bonding, the heating time is short, save time. High pressure, short time heating.
Can save energy, improve efficiency, high temperature mold release, less mold temperature between the temperature difference between warm and release, we are able to save steam. Molding temperature of 115-130 deg.] C, 90 deg.] C through the cooling water, are evacuated, the surface of the product to reduce the expansion to a certain value, to 85 ℃, before stripping.
Standard material: a small molecular weight, volatile high soil machine is mainly used, from the viewpoint of energy control, automatic machine for less.
Quick material type: BASF CP303, the Dragon King B-SB, Xingda 303, Chengda PK303 and so on.
Common materials: its molecular weight, volatile high. Production prone to swell phenomenon. It should adopt the low-pressure long time heating.
2) ordinary material type: BASF CP203, the Dragon King E-SB, Xingda 302, Chengda PK302 and so on.
Ordinary material control technology: because of its large molecular weight, volatile high. Production prone to swell phenomenon. It should adopt the low-pressure long time heating.