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Application characteristics of blister packaging materials

The functions of blister packaging products are divided into two categories:


One is a transparent series with the purpose of displaying, protecting and beautifying products. The products packed are mostly small commodities, which are placed or hung on the shelves of supermarkets. The materials selected are mostly pet and PVC with better transparency. The products include: mask, card inserting shell, card absorbing shell, heat sealing double bubble shell, folding double bubble shell and transparent folding box Dongguan anti-static plastic factory;

The other is a series of pallets and blister boxes for the purpose of protection, separation, shockproof and foil. The products packed are mostly electronic, it, industrial parts and cosmetics, and the materials used are mostly PS (color, antistatic and flocking). The products include: pallets, inner pallets, blister boxes, flocking blisters, antistatic blisters, conductive blister trays, turnover pallets, etc. In recent years, the combination of these two types of blister packaging products has produced new packaging types: bottom cover and sandwich packaging, in which the bottom cover is made of PET material with better transparency, and the bottom is made of PS material, which not only plays the protection function of the container, but also plays the intuitive effect of display.


Principle of Blister molding machine: Blister molding is also called thermoplastic molding. This molding process mainly uses the vacuum suction generated by the vacuum pump to blister the heated and softened PVC, pet, PETG, APTT, PP, PE, PS and other thermoplastic sheets into various shapes of vacuum hoods through the mold.


At present, the common products on the market are: daily necessities blister packaging, hardware blister packaging, automotive supplies blister packaging, electronic products Blister packaging, food blister packaging, cosmetics blister packaging, computer peripheral equipment blister packaging, toys blister packaging, sports supplies blister packaging, stationery supplies blister packaging and other anti-static blister factories in Dongguan.


Its main structure is composed of feeding, pulling, electric heating furnace, lower gate, multi-functional adjustable size, lower die plate, upper die, upper gate, knife gate, slice, placing and equipped with vacuum device, etc.; with pneumatic device as the driving force source, its pulling and sending adopts electric, reducer, time relay, intermediate relay, travel switch and other electrical appliances to form a full-automatic control system.


The requirement of the control system of the blister machine is to ensure convenient operation, high precision of mechanical action and temperature control, short production time, and save the power consumption of the machine as much as possible under the same production conditions.


The technology is widely used in packaging, lampshade production, acrylic light box, industrial plastic shell and plastic parts production.


Application characteristics of materials

The sheet used for blistering is called hard film or film, and the sheet with thickness greater than 2mm is called plate. Commonly used ones are: pet (polyethylene terephthalate) hard film, PVC (polyvinyl chloride) hard film, PS (polystyrene) hard film, ABS (engineering plastics). PS hard disk has low density, poor toughness and is easy to burn. When it is burned, styrene gas (harmful gas) will be produced, so it is generally used to produce various industrial plastic pallet. PVC hard disk has moderate toughness and is not easy to burn. When it burns, it will produce chlorine gas, which will have a certain impact on the environment. PVC is easy to heat close. It can be sealed by sealing machine and high-frequency machine. It is the main raw material for the production of transparent Blister products. Pet hard disk has good toughness, high transparency, easy to burn, and does not produce harmful gases when burning. It belongs to environmental protection materials, but its price is high, so it is suitable for making high-grade Blister products. Generally, pet hard disk is required for blister shell in European and American countries, but it is not easy to heat up, which brings great difficulties to packaging. In order to solve this problem, people compound a layer of PVC film on the surface of pet, named PETG hard disk, But the price is higher. The materials used for thick plates mainly include ABS, acrylic (plexiglass), PS, PC, PVC, etc.

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