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Blister packaging industry mold commonly used materials
- Dec 19, 2017 -

Plastic packaging industry has many kinds of molds, first of all, the mold used in plastic machines are: plastic aluminum mold, plastic mold blister, plastic plaster mold, die. Blister aluminum mold which is generally used cnc computer engraving, high quality, durable, suitable for mass production; Blister copper mold is essentially just a thin layer of copper, which is filled with gypsum, this mold is also suitable for large Mass production, relative to the aluminum mold, poor heat transfer, short life.

Gypsum mold is mainly used for small batch production and proofing, of which gypsum hardness, suitable for small batch production, the hardness of yellow gypsum small, mainly used for playing a sample. The mold is in the plastic molding production process, you need to stereotypes, exert a force from above to promote stereotyping, usually made of steel, and attach the fabric. Punch used in the mold: Iron knife mold, laser woodworking knife mold, metal punch die.Iron knife mold which is mainly used in mechanical punch, laser die is mainly used in hydraulic press, for the special shape of the product need to use metal punch cutting.

In the latter part of the packaging mold for the sealing mold, high-frequency mold, etc., with the sealing machine and high-frequency machine to the blister and blister, or blister and paper card between the heat seal.

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Blister packaging materials commonly used blister packaging film called the hard film or film, commonly used are: PET (polyethylene terephthalate) hard films, PVC (polyvinyl chloride) hard films, PS (polystyrene Hard pieces. PS rigid film low density, poor toughness, easy to burn, combustion will produce styrene gas (which is a harmful gas), it is generally used to produce a variety of industrial plastic tray. PVC hard film moderate toughness, easy to burn, combustion will produce chlorine, causing some impact on the environment, PVC easy to heat, sealing machine and high frequency machine can be used to seal the edge, is the main raw material for the production of transparent plastic products.

PET hard film toughness, high transparency, easy combustion, combustion does not produce harmful gases, are environmentally friendly materials, but the high price, suitable for high-grade plastic products, plastic blisters in Europe and the United States generally require the use of PET hard film, but It is not easy to heat, to bring great difficulties to the package, in order to solve this problem, people use a material called PETG ethylene glycol modified - polyethylene terephthalate, this material is easy to PVC Heat sealability, but also PET high environmental protection and transparency, but the price is higher.