Plastic cutlery 1. Polyethylene terephthalate (PET), wh […]
1. Polyethylene terephthalate (PET), which is made up of ethylene. Often used as mineral water bottles, cola beverage bottles, juice bottles, etc. Because it can only heat up to 120 ° C, it is only suitable for cold drinks and warm drinks. If it is filled with high temperature liquid or heated, it will be deformed.
According to its composition, plastic tableware can be divided into the following categories:
Often used as mineral water bottles, cola beverage bottles, juice bottles, etc. Because it can only heat up to 120 ° C, it is only suitable for cold drinks and warm drinks. If it is filled with high temperature liquid or heated, it will be deformed.
2, high-density polyethylene (HDPE), suitable for food and medicine bottles, cleaning supplies and bath products, shopping bags, trash cans.
3. Polyvinyl chloride (PVC), which is formed by polymerization of vinyl chloride. Oil temperature and in contact with the PVC readily releases the phthalates and toxic incompletely polymerized vinyl chloride monomer. The plastic wrap made of polyvinyl chloride has good transparency, is not easy to be broken, has strong adhesion, and has a low price. It is a film that is firmly adhered to the box that we see in supermarkets and hypermarkets. According to its characteristics, it is only suitable for the cold storage of vegetables and fruits. It is not suitable to put foods containing more fat such as meat and cakes, and it is not suitable for microwave heating.
4. Low-density polyethylene (LDPE) plastic film and cling film have good barrier properties against water, so paper boxes such as milk cartons and beverage boxes are used as inner film. Because the low-density polyethylene wrap film will be hot-dissolved when it exceeds 120 °C, if the wrap is used to wrap the food, the oil in the food will melt some of the ingredients in the wrap, so it needs to be preserved before entering the microwave oven. The membrane is removed, at least not allowing the food to directly contact the cling film. Low-density polyethylene itself has no degradation properties, and today's "plastic limit" is mainly limited.
5, polypropylene (PP), made of propylene polymerization, transparency is better than polyethylene, harder than polyethylene, the box used in the restaurant is mostly it, the plastic box can be put into the microwave to heat.
6, polystyrene (PS), made of styrene polymerization, often used in bowls of instant noodles boxes, fast food boxes. It is cold and heat, but the temperature was too high release harmful, so do not put into the microwave oven heating bowl noodles, and try not to use it to install the hot food, but also can not bloom strongly acidic (fruit juice) and Strong alkaline substance, otherwise it will release styrene and auxiliary materials.