With the continuous improvement of production technology, the application field of plastic products has been more and more extensive. In our commonly used types of plastic products, there are many sophisticated daily necessities often used in plastic foam shell packaging, such as battery packaging, electronic accessories packaging and so on. The raw materials used in the production of absorbent foam shell are mostly hard sheet or film, the material types are PET hard sheet, PVC hard sheet, PS hard sheet and so on. For each of these different materials, the performance of Blister Blister products is also different. Among them, the PS Blister Blister shell products have low density, poor toughness and easy to burn.

　　The harmful gas styrene will be produced when burning, so the absorbent foam shell products produced with this material are mostly used in industrial production. The toughness of PVC hard material is moderate, and it is not easy to burn. Generally, chlorine will be generated when burning, and it will also pollute the environment. It is easy to heat up the absorbent foam shell made of PVC material, so it is often used in the production of some transparent absorbent plastic products to ensure that the product has a certain degree of beauty.

　　PET material has good toughness, high transparency and easy to burn. It is a kind of environmental protection material, but the overall material price is higher, it is mainly used to produce some high-grade plastic products. For this material, it also has its own disadvantages. It is not easy to heat fit when packaging.