This depends on the specific material of the plastic cup. Most of the plastic lunch boxes/plastic cups used in general catering can be recycled.
Plastic product recycling marks No. 1-7 are formulated by relevant organizations in the plastics industry in the United States.
No. 1
PET (polyethylene terephthalate), a container made of this material is a common plastic bottle for soda, also commonly known as a "poly bottle".
Common mineral water bottles, carbonated beverage bottles, etc. Heat-resistant to 70°C, it is easy to deform, and some harmful substances are melted out. Do not put in the car to bask in the sun; do not store alcohol, oil, etc.
No. 2
HDPE (high-density polyethylene), containers for detergents, shampoos, shower gels, edible oils, pesticides, etc. are mostly made of HDPE. The containers are mostly semi-opaque and feel like wax.
Common white medicine bottles, cleaning supplies, and bath products. Don't use it as a water cup or as a storage container for other items. If the cleaning is not thorough, do not recycle.
No. 3
PVC (polyvinyl chloride) is mostly used to make water pipes, raincoats, school bags, building materials, plastic films, plastic boxes and other utensils.
Common raincoats, building materials, plastic films, plastic boxes, etc. It has excellent plasticity and low price, so it is widely used. It can only heat up to 81℃. It is easy to produce bad substances at high temperature, and it is difficult to clean and easy to remain. Do not recycle.
No. 4
LDPE (low-density polyethylene), plastic bags that can be seen everywhere are mostly made of LDPE.
Common cling film, plastic film, etc. Harmful substances are produced at high temperatures, and toxic substances enter the human body with food, which may cause diseases such as breast cancer and birth defects of newborns. Do not put the plastic wrap into the microwave oven.
No. 5
PP (polypropylene) is mostly used to make water buckets, trash cans, baskets, baskets and food containers for microwave ovens.
(Common soy milk bottles, yogurt bottles, juice drink bottles, microwave lunch boxes. It can withstand high temperatures up to 130°C. It is the only plastic box that can be placed in a microwave oven. It can be reused after careful cleaning. Note that some microwave ovens The lunch box, the box body is made of No. 5 PP, but the lid is made of No. 4 PE. Because PE cannot withstand high temperatures, it cannot be placed in the microwave together with the box.)
No. 6
PS (polystyrene), due to its low water absorption, is mostly used to make building materials, toys, stationery, rollers, as well as cup boxes or disposable tableware for beverages in fast-food stores.
(Common bowls of instant noodle boxes and fast food boxes. Do not put into the microwave oven to avoid the release of chemicals due to high temperature. After loading acids (such as orange juice) and alkaline substances, carcinogens will be decomposed. Avoid fast food Pack hot food in the box. Don't use the microwave to cook instant noodles in a bowl.)
No. 7
other. (Common PCs, such as water bottles, space cups, and baby bottles. Department stores often use water cups made of this material. PA, that is, nylon, is mostly used in textiles and some home appliances and other products. PC is easy to release poisonous under high temperature conditions. The substance bisphenol A is harmful to the human body. Do not heat it when using it, and do not expose it to direct sunlight.)