1、 PVC sheets have high toughness and are not easy to burn. When burned, chlorine gas is produced, which has a certain impact on the environment. PVC is easy to heat seal and can be sealed with sealing machines and high-frequency edge banding, making it the main raw material for producing transparent vacuum molded products.
PVC film is a widely used and popular material. PVC film can be divided into environmentally friendly and non environmentally friendly types, and can be made into various vacuum packaging products such as transparent, colored, anti-static, gold-plated, and flocked. Its main characteristics are high transparency, good surface gloss, few crystal points, small water marks, wide use, strong impact resistance, and easy molding. The product is widely used for packaging of toys, food, electronic products, medicine, appliances, gifts, cosmetics, stationery and other products.
2、 PS hard sheets have low density, poor toughness, and are prone to combustion. When burned, they produce styrene gas (which is a harmful gas), so they are generally used to produce various industrial vacuum pallets. PS sheet is a new type of environmentally friendly packaging material that has developed in recent years. With its excellent thermal forming performance, good environmental and hygiene performance, it is widely used in medicine, food, toys, and electronics.
3、 PET hard sheets have good toughness and are a new type of material developed in recent years. Due to its excellent toughness, high strength, high transparency, and recyclability, it is easy to burn and does not produce harmful gases during combustion. As an environmentally friendly material, PVC has gradually been phased out. However, its high price makes it suitable for high-end vacuum molded products. The blister shell in European and American countries generally requires the use of PET material, but its high hot melting point poses great difficulties for high cycle packaging. To solve this problem, people composite a layer of PVC film on the surface of PET, named PETG, but at a higher price. Mainly used for electronics, food, toys, color box windows, collar holders, shoe packaging, etc.
