Vacuum suction molding is one of the common vacuum pump applications, is also a plastic packaging container production commonly used thermoforming method, in the processing of packaging materials industry has a wide range of applications.
What is vacuum molding：
Vacuum suction molding is generally used for making open shell products of thermoplastic sheets. The principle is simply that the plastic sheets are heated to a certain temperature, then softened to viscoelastic state, and then pumped through a vacuum pump to vacuum the mold, forming a vacuum suction pressure difference, so that the sheets are deformed and covered on the mold contour surface, the most. After cooling, shaping and dressing.
The whole set of vacuum plastic suction unit is generally composed of upper and lower heater, temperature controller, bearing plate, press frame, vacuum pump, vacuum chamber, mold temperature controller, cooling device and so on. Parameters are controlled by computer storage, and the control is simple. When a certain type of product is produced, only the corresponding parameters can be adjusted.
Vacuum plastic forming relies on the vacuum pressure difference to make the sheet stretch and deform. At present, the vacuum is easy to realize, master and control, making vacuum molding products with low cost, high production efficiency advantages, has been widely used. Its form can be divided into three types: die less molding, punch (Yang Mo) forming and die (die) molding.
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