What Are The Food Grade Plastics
Jun 14, 2024| PP RESIN:
PP material generally refers to polypropylene, which is a polymer of propylene through the addition polymerization reaction. White waxy material, transparent and light in appearance.
PP plastic is one of the very common plastics, can be made into any food plastic packaging, such as food special plastic bags, food plastic boxes, food straws, food plastic parts, etc., safe and non-toxic and low temperature resistance, high temperature resistance, PP is the only plastic that can be put into the microwave oven heating, and has high strength folding performance (50,000 times), It will not be damaged when falling from a high altitude at -20℃.
Features: It is a thermoplastic resin, with excellent heat resistance and moisture resistance, often used in microwave food packaging, instant noodle cups, soy sauce bottles and so on.
Safety: PP is also a food-grade plastic, widely used in the field of food packaging, safe and reliable.
PE RESIN
Polyethene (PE) is a thermoplastic resin made by aggregating ethylene. In industry, it also includes copolymers of ethylene with a small amount of alpha-olefin.
HDPE plastic, commonly known as high-density polyethylene, has a high use temperature, hardness, mechanical strength and chemical resistance. It is a non-toxic and safe material, often used in the production of plastic containers for food.
LDPE plastic is commonly known as low-density polyethylene, and the products made with it have the characteristics of tasteless, odorless, non-toxic and dull surface. Commonly used in food plastic parts, food packaging with composite film, food cling film, medicine, medicine plastic packaging, etc.
Features: It has good heat resistance, cold resistance and corrosion resistance, and is often used for packaging vegetables, fruits, beverages and other foods.
Safety: PE is a widely used food packaging material, its safety is high, in line with food grade plastic standards.
PC RESIN
Polycarbonate (PC for short) is a polymer containing carbonate ester group in the molecular chain. According to the structure of the ester group, it can be divided into aliphatic, aromatic, aliphatic - aromatic and other types.
PC plastic can be used to make sports water bottles, bottles, etc., widely used in the production of plastic containers, is a safe material.
PS RESIN
Polystyrene series plastics refers to a class of plastics including styrene group in the macromolecular chain, including styrene and its copolymers, specific varieties including ordinary polystyrene (GPPS), high impact polystyrene (HIPS), flexible polystyrene (EPS) and metallocene polystyrene (SPS)
PS is often used to make bowl instant noodle boxes, fast food boxes, disposable food packaging boxes, etc., with good cold resistance.
Features: It has good transparency, strength and temperature resistance, and is often used for packaging pastry, candy, coffee and other food.
In terms of safety, PE, PP, PET and PS all belong to food-grade plastics, which meet the relevant national standards and have high safety.
Different food plastic packaging materials have different characteristics and scope of application. For example, PE and PP are suitable for packaging various foods, including meat, fish, vegetables, fruits, beverages, etc.; PET is mainly used for packaging beverages, mineral water, etc. PS is more suitable for packaging pastry, candy and other foods.
When choosing food plastic packaging, in addition to considering its safety, it is also necessary to make a comprehensive choice according to the characteristics of food, storage conditions, transportation methods and other factors.