Membrane Press Equipment

Membrane Press Equipment is a kind of equipment commonly used in the manufacture of plastic products, and its working principle mainly involves the following steps:
Plastic sheet loading: The pre-heated plastic sheet (usually thermoplastic) is placed between the upper and lower die of the equipment.
Heating and softening: The heating element in the device is activated to heat the plastic sheet by conducting or radiating heat sources to soften it.
Suction and vacuum formation: When the plastic sheet is soft, the vacuum pump or vacuum system in the equipment is opened, and the negative pressure environment is formed by pumping air, that is, the vacuum state. This can achieve the purpose of removing air bubbles and achieving semi-solidified state.
Blister molding: Under the action of vacuum, the upper die and the lower die are closed, and the plastic sheet is pressed tightly to make it completely fit the mold surface. During this time, the molding may also be assisted by auxiliary gas injection or mechanical power.
Cooling and curing: When the plastic sheet mold forms the desired shape, the heating is stopped and the vacuum is continued to promote the cooling and curing of the plastic. Cooling time depends on the type and thickness of the plastic material.
Mold separation and finished product release: After cooling and curing, the upper and lower molds are opened to remove the finished product from the mold. The method of exhaust gas or release vacuum is usually used to reduce the adsorption force of the mold on the finished product, so that the finished product is easy to release.
It should be noted that different equipment may have some differences or special working methods, such as heating methods, mold structures, etc. Therefore, before operating the equipment, you should fully understand and follow the operating guidelines and safety procedures provided by the equipment manufacturer.