Mr. Wang of Rushan Road asked: I heard that some plastic bottles can not be used to hold food. A few days ago, when I was dining at a snack bar on Rushan Road, I found that the containers they used for vinegar, soy sauce and other seasonings were plastic bottles of a certain beverage. The bottom of the bottle had a triangular logo with a number "1". On Rushan Road, there is more than one plastic bottled seasoning. Is such a plastic bottled seasoning suitable?
Shanghai Plastics Industry Association experts reply: Generally speaking, plastic bottles used to hold mineral water, beverages and other liquids are not suitable for repeated use, especially for vinegar, soy sauce and other spices. Because these spices have certain corrosive properties, they will be used in plastic beverage bottles for a long time, which will release harmful substances in plastic materials and cause harm to the human body. The triangular logo and number on the bottom of the beverage bottle is a “plastic recycling mark†that helps us understand the materials of plastic products and their conditions of use, which generally appear at the bottom of plastic products. For example, if the number is "1", the material is PET. This material is not suitable for high temperature liquids or for heating. For long-term use, it may release carcinogens.
The number in the plastic recycling mark means "1" - PET (polyethylene terephthalate) mineral water bottles, carbonated beverage bottles are made of this material. This material is heat resistant to 70 ° C. It is easily deformed when it is filled with a high temperature liquid or heated, and harmful substances are dissolved. At the same time, this plastic product may release carcinogens after 10 months.
"2"—HDPE (High Density Polyethylene) Plastic containers for cleaning products and bath products are mostly made of this material and can withstand temperatures up to 110 °C. However, these containers are usually not easy to clean and tend to become a hotbed of bacteria, and it is best not to recycle them.
"4" - LDPE (low density polyethylene) cling film, plastic film, etc. are all such materials. The heat resistance is not strong. When the food is placed in the microwave oven, the wrapped plastic wrap is first removed.
"5" - PP (polypropylene) is mostly used to make microwave lunch boxes. Resistant to 130°C, it is the only plastic case that can be placed in a microwave oven. It is important to note that the lids of some lunch boxes are not resistant to high temperatures. It is best to remove the lids before heating.
"6" - PS (polystyrene) is mostly used to make the material of bowl-shaped instant noodles and foamed snack boxes. It is also heat-resistant and cold-resistant, but it cannot be placed in a microwave oven. Try to avoid using it to pack hot food.
"7" - PC (polycarbonate) and other PCs are mostly used in the manufacture of baby bottles, space cups, etc., because of the controversy of containing bisphenol a. Experts point out that special care must be taken when using this plastic container.
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