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Blister molding machine

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Blister molding is also called thermoplastic molding. This molding process mainly uses the vacuum suction generated by a vacuum pump to soften the heated and softened thermoplastic plastic sheets such as PVC, PET, PETG, APTT, PP, PE, PS and so on through a mold. Various shapes of vacuum covers, or stick to the surface of products of various shapes. Blister is divided into thin sheet and thick sheet according to sheet thickness.



1Blister molding machine principle

Blister molding is also called thermoplastic molding. This molding process mainly uses the vacuum suction generated by a vacuum pump to soften the heated and softened thermoplastic plastic sheets such as PVC, PET, PETG, APTT, PP, PE, PS and so on through a mold. Various shapes of vacuum covers, or stick to the surface of products of various shapes. Blister is divided into thin sheet and thick sheet according to sheet thickness.


At present, the common sheet blister products on the market are: blister packaging for daily necessities, blister packaging for small hardware, blister packaging for automotive supplies, blister packaging for electronics, blister packaging for food, blister packaging for cosmetics, blister packaging for computer peripherals, Blister packaging for toys, blister packaging for sporting goods, blister packaging for stationery, etc. The main structure of the machine is composed of feeding, pulling, upper and lower electric heating furnaces, lower gates, multi-functional adjustable sizes, lower die discs, upper molds, upper gates, knife gates, slicing, putting pieces, and vacuum equipment. Pneumatic device is used as the main power source, and its pull-out and feed-out adopt electric, reducer, time relay, intermediate relay, travel switch and other electrical appliances to form a fully automatic control system.

The common products of thick film blister are: household appliances inner shell, luggage, bags, display rack accessories, decoration, car interiors, bumpers, fenders, beauty equipment, light box shells, toy car shells, industrial panels, advertising light boxes, Blister LOGO, bathroom products, refrigerator liners and more.

2 molding type

1.Single male mold forming

Single male mold forming is also called convex mold forming or bending forming, vertical forming. It is a molding method in which a plastic sheet heated and softened is shaped into a certain shape by using a machine.

Second, single negative mold forming

Single female mold forming is also called concave mold forming.

Third, counter-molding

The opposite mold is composed of a male mold, a female mold, a clamp and other accessories.

Fourth, composite mold forming

3 molding technology

Blister molding technology, that is, plastic sheet (plate) material thermoforming processing technology, is one of the plastic secondary processing industrial technologies. It is different from the one-shot processing processes such as injection molding and extrusion. It is not hot-molding for plastic resin or pellets or continuous molding with the same cross-section as the die; nor does it use machining tools such as machine tools and tools to cut some plastic materials. Next, get the required shape and size, but heat the plastic sheet (plate) material, use the mold, vacuum or pressure to deform the sheet (plate) material to achieve the required shape and size, supplemented by supporting procedures to achieve the application purpose.

Blister molding equipment includes clamping system, heating system, vacuum and compressed air system, and molding mold.

References

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