1. PVC sheet has high toughness and is not easy to burn. When it burns, chlorine gas will be produced, which will have certain impact on the environment. PVC is easy to heat up. It can be sealed by sealing machine and high cycle wave. It is the main raw material for producing transparent plastic-absorbing products. PVC sheet is a widely used and popular material. PVC film can be divided into environmental protection and non-environmental protection. It can be made into transparent, colorful, anti-static, gold-plated, flocking and other plastic-absorbing packaging products. Its main characteristics are high transparency, good surface luster, little crystal point, small water pattern, wide use, strong impact resistance, and easy to form. Products are widely used in toys, food and other products. Outwrapping of electronic products, medicine, electrical appliances, gifts, cosmetics, stationery and other products.
Second, PS hard sheet has low density, poor toughness, easy to burn, and will produce styrene gas (harmful gas) when burning, so it is generally used to produce various industrial plastic-absorbing pallets. PS sheet is a new type of environmental protection packaging material developed in recent years. It is widely used in medicine, food, toys and electronics because of its excellent thermoforming performance, good environmental protection and health performance.
3. PET hard sheet has good toughness and is a new material developed in recent years. Because of its excellent toughness, high strength, high transparency, recyclability and reuse, inflammable combustion, no harmful gas when burning, it belongs to environmental protection material and gradually banned PVC, but the price is high. Suitable for high-grade plastic absorption products, European and American countries generally require the use of PET materials, but its high melting point makes high cycle packaging difficult. To solve this problem, people compound a layer of PVC film on the surface of PET, named PETG, but the price is higher. Mainly used in electronics, food, toys, color box windows, collars, footwear packaging, etc. Its advantages are as follows: 1. It has excellent transparency and smoothness, and good display effect. 2. Surface decoration performance is excellent, can be printed without surface treatment, easy to press patterns, easy to metal treatment (vacuum plating metal layer) 3. Good mechanical strength. 4. Good barrier performance to oxygen and water vapor. 5. It has good chemical resistance and can withstand the erosion of many chemical substances. 6. Non-toxic, reliable hygienic performance, can be used for food, medicine and medical equipment packaging, and Y-ray disinfection of its packaging. 7. It has good adaptability to environmental protection and can be recycled economically and conveniently. When burning its waste, it does not produce harmful substances to the environment. PET sheet is considered to be an ideal packaging material to meet the requirements of environmental protection (ROSH).