The Tupperware teacup I bought has a triangular pattern on the bottom and the English letter OTHER on the bottom. What does this mean? Or what standards.

This is a plastic recycling sign. There are 1 ~ 7 numbers in the triangle, and each number represents a plastic container. The recycling label of plastic products is formulated by the relevant institutions in the plastic industry in the United States. Different materials have different conditions of use. This little recycling logo on the bottom of plastic products is like a small ID card for each plastic container. They are made of different materials and have different uses.

Please pay special attention to:

"Other" means 07, which literally means "other plastics". Sometimes it is not marked Other, or it is only marked O, or there is only a triangle symbol of 07 or 7 in the middle.

You bought 07 products. Although 07 products are the most, it is recommended not to buy them. You already bought it. You'd better refer to the following suggestions: don't heat it when using it, and don't direct it in the sun. No dishwasher or bowl dryer is needed to clean the kettle. Before the first use, wash it with baking soda powder and warm water, and dry it naturally at room temperature. If the container is injured or damaged, it is recommended to stop using it, because it is easy to hide bacteria if there are tiny pits on the surface of plastic products. Avoid reusing aging plastic appliances.

After reading the following detailed introduction, you will know:

"01"-pets

(polyethylene terephthalate) mineral water bottles and carbonated beverage bottles are all made of this material. Beverage bottles cannot be recycled with hot water. This material is heat-resistant to 70℃ and is only suitable for warm or frozen drinks. When filled with high-temperature liquid or heated, it is easy to deform, and some harmful substances are dissolved out. Moreover, scientists have found that this plastic product may release carcinogens after 10 months, which is toxic to human body. Therefore, drink bottles should be discarded when they are used up. They should not be used as drinking cups or as storage containers for other items, so as not to cause health problems.

"02"-high density polyethylene

(High-density polyethylene) Plastic containers for cleaning products and bath products. At present, most plastic bags used in supermarkets and shopping malls are made of this material, which can withstand the high temperature of 1 10℃, indicating that plastic bags for food can be used to hold food. Plastic containers containing cleaning products and bath products can be reused after careful cleaning, but these containers are usually not easy to clean, making the original cleaning products a hotbed of bacteria, and it is best not to recycle them if they are not thoroughly cleaned.

"03"-PVC

According to reports, plastic products made of this material are prone to produce toxic and harmful substances from two aspects, one is monomolecular vinyl chloride that is not fully polymerized in the production process, and the other is harmful substances in plasticizers. These two substances are easy to precipitate when they encounter high temperature and oil, and toxic substances are easy to cause cancer after entering the human body with food. At present, containers made of this material are rarely used for packaging food. If it is in use, don't let it get hot.

"04"-low density polyethylene

(low density polyethylene) cling film, plastic film and so on are all of this material. Heat resistance is not strong. Generally qualified PE plastic wrap will melt when the temperature exceeds 1 10℃, leaving some plastic preparations that cannot be decomposed by human body. Moreover, food is wrapped and heated with plastic wrap, and the oil in food can easily dissolve the harmful substances in plastic wrap. Therefore, before putting food into the microwave oven, you must first remove the wrapped plastic wrap.

"05"-PP (this kind of cup is the best, it can drain water)

The microwave lunch box (polypropylene) is made of this material, which is resistant to high temperature 130℃ and has poor transparency. It is the only plastic box that can be put into the microwave oven and reused after careful cleaning. It should be noted that some microwave lunch boxes are made of PP 05, but the lid is PS 06. PS has good transparency, but it is not resistant to high temperature, so it can't be put in the microwave oven with the box. To be on the safe side, open the lid before putting the container in the microwave oven.

“06”——PS

(Polystyrene) This is the material used to make instant noodle boxes in bowls and foamed fast food boxes. Heat-resistant and cold-resistant, but it can't be put into the microwave oven to avoid releasing chemicals when the temperature is too high. Moreover, it cannot be used to hold strong acids (such as orange juice) and strong alkaline substances, because it will decompose polystyrene that is not good for human body. Therefore, you should try to avoid packing hot food in fast food boxes.

"07"-computer

And other kinds of PC are widely used materials, especially for making baby bottles, space cups and so on. It is controversial because it contains bisphenol A. Experts point out that in theory, as long as bisphenol A is completely converted into plastic structure in the process of manufacturing PC, it means that the product has no bisphenol A at all, let alone released it. However, if a small amount of bisphenol A is not converted into the plastic structure of PC, it may be released into food or drink. Therefore, special attention should be paid when using this plastic container.

The higher the temperature, the more bisphenol A remaining in PC is released and the faster it is. So PC water bottles should not be used to hold hot water. If your kettle number is 07, the following methods can reduce the risk: don't heat it when using it, and don't direct it in the sun. No dishwasher or bowl dryer is needed to clean the kettle. Before the first use, wash it with baking soda powder and warm water, and dry it naturally at room temperature. If the container is injured or damaged, it is recommended to stop using it, because it is easy to hide bacteria if there are tiny pits on the surface of plastic products. Avoid reusing aging plastic appliances.