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What are the standards for food grade plastics

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normally, all PP can be regarded as food grade. The difference between food grade and industrial grade is:
1 Food grade PP will not dissolve harmful substances under normal conditions and high temperature
2. Industrial grade PP will dissolve harmful substances at room or high temperature, which is harmful to human health. When some are used in food containers, there will be a strong peculiar smell in case of heat. Industrial grade PP will produce
characteristics of various plastics:
polyethylene, abbreviated as PE. It is a high molecular organic compound formed by addition polymerization of ethylene. Polyethylene is recognized as the best material in contact with food in the world. It is non-toxic, tasteless and odorless, and meets the hygienic standard of food packaging. Polyethylene film, light and transparent, with moisture-proof, oxygen resistance, acid and alkali resistance, general air tightness, excellent heat sealing and other properties. It is known as “plastic flower”. It is the most used and important material for plastic packaging and printing. Common fresh-keeping film, plastic film, etc. When high temperature has harmful substances, toxic substances enter the body with food, which may cause breast cancer, neonatal congenital defects and other diseases. Don’t put plastic wrap in the microwave
Pet polyethylene terephthalate. Common mineral water bottles, carbonated beverage bottles, etc. Heat resistant to 70 ℃, easy to deform, and substances harmful to human body melt out. No. 1 plastic may release carcinogen DEHP after 10 months of use. Do not put it in the sun in the car; Do not contain alcohol, oil and other substances
HDPE high density polyethylene. Common white medicine bottles, cleaning products and bath products. Do not use it as a water cup or as a storage container for other items. Do not recycle if the cleaning is not complete.

material code of plastic products:
high density polyethylene-02-hdpe
polyvinyl chloride-03-pvc
low density polyethylene-04-ldpe
other plastics-07-others
(1) “No. 1” PET bottle with a triangle of “1” written on it, Said it uses pet (polyethylene terephthalate) bottle, which is the most widely used beverage bottle at present. Its transparency is high, and others can see the contents at a glance; Acid and alkali resistant, with a large capacity, it can hold all kinds of acidic fruit juices and carbonated drinks; It has high water resistance and is not easy to seep. It is very suitable if it is only used as a jar for low-temperature drinks. This is why it is favored by beverage merchants and is often used to hold all kinds of juice, water, tea and other drinks. The beverage bottle cannot be recycled to contain hot water. This material is heat-resistant to 70 ℃, and is only suitable for warm or frozen drinks. If it is filled with high-temperature liquid or heated, it is easy to deform and dissolve substances harmful to human body. Moreover, scientists found that after 10 months of use, this plastic product may release carcinogens and be toxic to human body. Therefore, throw away the beverage bottles when they are used up. Don’t use them as water cups or storage containers to hold other items, so as not to cause health problems
(2) “No. 2” HDPE (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 110 ℃ high temperature. It is indicated that the plastic bags for food can be used to contain food. Plastic containers for cleaning products and bath products can be reused after careful cleaning, but these containers are usually difficult to clean, leaving the original cleaning products and becoming a hotbed of bacteria. If the cleaning is not complete, it is best not to recycle them
(3) “No. 3” polyvinyl chloride (PVC) It is a plastic container that is gradually less used in recent years. The study found that this material can only resist 81 ℃ and is prone to bad substances at high temperature. Even it will be released during the manufacturing process. At present, it has rarely been used in food packaging. If it is used as a beverage container, it is recommended not to buy it. (4) “4” LDPE (low density polyethylene) fresh-keeping film and plastic film are made of this material. The heat resistance is not strong. Generally, the qualified PE fresh-keeping film will melt when the temperature exceeds 110 ℃, leaving some plastic preparations that cannot be decomposed by the human body. Moreover, when the food is wrapped with plastic wrap and heated, the oil in the food can easily dissolve the harmful substances in the plastic wrap. Therefore, when putting food into the microwave oven, first remove the wrapped preservative film
(5) “No. 5” PP microwave oven lunch box is made of this material, which is resistant to high temperature of 130 ℃ and has poor transparency. It is the only plastic box that can be put into the microwave oven and can be reused after careful cleaning. It should be noted that for some microwave oven lunch boxes, the box body is made of No. 05 PP, but the box cover is made of No. 06 PS (polystyrene). PS has good transparency but is not resistant to high temperature, so it cannot be put into the microwave oven together with the box body. To be safe, remove the cover before putting the container into the microwave oven
(6) “No. 6” PS (polystyrene), which is used to make bowl instant noodle boxes and foamed fast food boxes. It is heat-resistant and cold resistant, but it cannot be put into the microwave oven to avoid releasing chemicals due to high temperature. And can not be used to contain strong acids (such as orange juice) and strong alkaline substances, because it will decompose polystyrene which is bad for human body. Therefore, you should try to avoid packing hot food in fast food boxes
(7) “No. 7” PC and other plastic products PC is a kind of material widely used, especially in the manufacture of milk bottles and space cups. It is controversial because it contains bisphenol A. Experts pointed out that in theory, as long as bisphenol A is 100% transformed into plastic structure in the process of making PC, it means that the product has no bisphenol A at all, let alone release 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 drinks. Therefore, pay special attention when using this plastic container
the higher the temperature, the more bisphenol A is released and the faster the release rate is. Therefore, do not use a PC water bottle to hold hot water. If your kettle number is 07, the following methods can reduce the risk: do not heat it when using it, and do not expose it to direct sunlight. Do not use dishwasher or dryer to clean the kettle. Before the first use, wash with baking soda and warm water and dry naturally at room temperature. If the container has any fall or damage, it is recommended to stop using, because if there are fine pits on the surface of plastic products, it is easy to hide bacteria.

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 there are more than 15 national standards related to food containers and packaging according to different plastics, and most of them are mandatory standards. 1. Gbn84-80 hygienic standard for polyethylene molded products 2. Gbn85-80 hygienic standard for polypropylene molded products 3. Gbn86-80 hygienic standard for polystyrene molded products 4. Gbn87-80 hygienic standard for melamine molded products 5. Gb3806-83 PVC plastic sandals 6. Gb3807-83 PVC microporous plastic slippers 7. Gb3830-83 soft PVC calendered film (piece) 8. Gb4085-83 semi rigid PVC block plastic floor 


 plastic bottled wine. Where does the country allow 


 the plastic bottle currently available for Baijiu is PET (polyester) plastic, and PET can be used in food and beverage with strong solubility such as alcohol and edible oil. Because pet is a new type of polymer polyester material with more stable molecular structure, it has been widely used in the packaging of low alcohol liquor such as beer abroad. However, although this material is harmless, its tightness is not as good as that of glass bottles, so it is not suitable for long-term storage

 polyester plastic can be used to hold wine 


 Where is it allowed, such as food safety law, or what? I want to find the relevant document 


 GB 4544 - 1996 beer bottle 

 GB /T 12670-2008 polypropylene (PP) resin 

 GB /T 12671-2008 polystyrene (PS) resin 

7 more

there are more than 15 national standards related to food containers and packaging according to different plastics, and most of them are mandatory standards.

there are QS approved in the province

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