The blister machine (also called the thermoforming machine) is a machine that sucks the heat-plasticized PVC, PE, PP, PET, HIPS and other thermoplastic plastic coils into various shapes of advanced packaging boxes, frames and other products. Using the vacuum suction force generated by the vacuum pump, the heated and softened PVC, PET and other thermoplastic plastic sheets are blister-molded into various shapes of vacuum covers, blister trays, blisters, etc.
The blister molding technology, namely the thermoforming processing technology of plastic sheet (board) material, is one of the industrial technologies in the secondary processing of plastics. It is different from the one-time processing technology such as injection molding and extrusion. It is not for plastic resin or pellets for heating molding or continuous molding with the same cross-section through the die; nor is it using machine tools, knives and other mechanical processing methods to cut part of the plastic material. Next, to obtain the required shape and size, but for the plastic sheet (board) material, heating, using mold, vacuum or pressure to deform the sheet (board) material to achieve the required shape and size, supplemented by supporting procedures to realize the application Purpose.
Blister molding equipment includes clamping systems, heating systems, vacuum and compressed air systems, and molding molds. Plastics can be divided into two major categories: thermoplastics and thermosetting plastics according to their heating behavior. Most of the materials used for thermoforming are thermoplastic materials.