Which plastics can be used to hold food.

PET, PP material, suitable for food packaging, belongs to food grade plastics.

PET (polyethylene terephthalate.

materials, which can be used to produce mineral water bottles and carbonated drinks.

bottle, heat-resistant to 70 degrees Celsius.

Volatile, there are substances harmful to the human body dissolved, and long-term use may release carcinogen DEHP. Therefore, it cannot be used to hold alcohol, vinegar, soy sauce, etc.

PVC (polyvinyl chloride.

Materials, which are used in raincoats, building materials, plastic boxes, etc., are rarely used in food packaging.

PP (polypropylene.

Materials, mostly used in microwave-safe plastic boxes, can be reused after careful cleaning.

The wide application of plastic products in life is really all aspects, and I will summarize the mainstream types of plastics on the market.

PET (polyethylene terephthalate) heat resistant: 80°C, commonly used in beverage bottles.

HDPE (High Density Polyethylene) heat resistance: 75°, commonly used in dairy beverages.

PVC (polyvinyl chloride) heat resistance: 80°, commonly used in decoration materials.

LDPE (low-density polyethylene) heat resistance: 70°, commonly used in plastic wrap.

PP (polypropylene) heat resistance: 140°, commonly used in heatable food packaging or made into containers, straws.

PS (polystyrene) is heat-resistant to 95°C and is commonly used in take-out lunch boxes.

The above is a list of mainstream plastic products, and you should have a rough judgment after reading it in detail.

Hope it helps, thank you.

Food-grade PP plastic is the safest and safest than other plastics. Because the melting point of PP plastic can be as high as 167, it is a plastic product that can be put into the microwave oven, and can be cleaned and reused after use. Some brands of plastic cups on the market are more expensive than others because they are made of PP material, and fast food restaurants generally do not have plastic of this material because of the high cost.

It should be noted that the PP material can be put into the microwave oven, but the PS material plastic can not be put in, there is only one letter difference, the difference is very large, and the PP material must also be food-grade to have a high safety level.

Advantages of PP material:

1. The fusibility of PP material is very high, and its fluidity is very good in the process of high temperature dissolution. At the same time, the process after high-temperature melting molding will be relatively wide, and in terms of the value of the isotropic index, it will be smaller than that of PE materials, which shows that it is very malleable and can produce various shapes.

2. The production process of PP material is relatively simple, the surface of the product made with it is very smooth, and the dyeing effect is also very good, which is better than PE material in all aspects. Among the many plastics, PP has the best heat resistance and can be sterilized at 100 degrees, so this material is often used to make tableware, kettles and other supplies.

3. The yield strength of PP material is very high, and its bending fatigue life will be longer, which can withstand 70 million folds and bends, and will not be damaged, cracked or other phenomena.

PET, PP material, suitable for food packaging, belongs to food grade plastics.

PET (polyethylene terephthalate) material, which can be used for the production of mineral water bottles and carbonated drink bottles, is heat-resistant to 70 degrees Celsius and is volatile and detachable, with the dissolution of harmful substances to the human body, and may release carcinogens DEHP after long-term use. Therefore, it cannot be used to hold alcohol, vinegar, soy sauce, etc.

PVC (polyvinyl chloride) material is used in raincoats, building materials, plastic boxes, etc., and is rarely used in food packaging.

PP (polypropylene) material, mostly used in microwave oven plastic boxes, carefully cleaned and reused.

According to relevant experts, there are three types of plastic bags used by people now: the first type can neither be stained nor put food, and can only be used to hold building materials or other items; The second type is used as packaging materials, such as garment bags, etc.; The third category is barely used to hold food. Some of these three plastic bags contain "toxins", such as polyvinyl chloride plastic, which is not toxic but contains toxic plasticizers in the process of making the plastic.

In addition, some plastic products are added with stabilizers, and the main ingredient of these stabilizers is lead stearate, which is also toxic. This lead salt is very easy to precipitate, and if food is packed in this plastic bag, the food will be contaminated. Regular consumption of this contaminated food can cause accumulated lead poisoning in the human body.

Therefore, plastic bags should not be used indiscriminately when loading food, especially cooked food.

In addition, darker plastic bags should attract more attention. Some fish and white chicken sellers often use particularly dark black, red and dark blue plastic bags. This dark-toned plastic bag is mostly reprocessed from waste plastic, which is very harmful to the human body, and cannot be used to hold food.

In addition, the ultra-thin plastic bags used in staple food stalls are also prohibited from containing food.

In addition, PVC plastic products should not be used to store food containing alcohol or oil, nor can food with a temperature of more than 50, otherwise the lead in the bag will dissolve into the food.

Therefore, using plastic bags to pack food is not good for health, and the habit of picking up plastic bags of food is the enemy of health. So, whether you're shopping for groceries or food, it's best not to use plastic bags.

No. 1 PET (polyethylene terephthalate), a container made of this material, is a common plastic bottle for soda, also commonly known as "PET bottle".

Common mineral water bottles, carbonated drink bottles, etc. Heat-resistant to 70 easy to deform, there are harmful substances to the human body melt out. After 10 months of use, the No. 1 plastic product may release the carcinogen DEHP. It cannot be left in the car in the sun; Do not fill it with alcohol, oil, etc.

No. 2 HDPE (High Density Polyethylene), detergents, shampoos, body soaps, cooking oils, pesticides, etc. are mostly made of HDPE. The container is mostly opaque and feels like wax.

Common white medicine bottles, cleaning products, bath products. Do not use it as a drinking glass or as a storage container for other items. Do not recycle if you do not clean thoroughly.

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. The plasticity is excellent and the price is cheap, so it is very common to use, and it can only withstand heat 81At high temperatures, it is easy to produce undesirable substances, and it is rarely used in food packaging.

It is difficult to clean and easy to remain, so do not recycle. Do not buy drinks if they are contained.

No. 4 LDPE (Low Density Polyethylene), many of the plastic bags that can be found everywhere are made of LDPE.

Common plastic wrap, plastic film, etc. Harmful substances are produced at high temperatures, and after toxic substances enter the human body with food, they may cause diseases such as breast cancer and birth defects in newborns. Keep plastic wrap out of the microwave.

No. 5 PP (polypropylene) is mostly used in the manufacture of buckets, garbage cans, baskets, baskets and food containers for microwave ovens.

Common soy milk bottles, yogurt bottles, fruit juice drink bottles, microwave lunch boxes. It can withstand temperatures up to 167 degrees Celsius and is the only plastic case that can be placed in the microwave and can be reused after careful cleaning. It should be noted that some microwave oven lunch boxes are made of No. 5 PP, but the lid is made of No. 4 PE, because PE cannot withstand high temperatures, so it cannot be put into the microwave oven together with the box.

No. 6 PS (polystyrene) is used in the manufacture of building materials, toys, stationery, rollers, cups, boxes for beverages and disposable tableware in fast food restaurants due to its low water absorption.

Common bowls of instant noodle boxes, fast food boxes. Do not put it in the microwave oven to avoid releasing chemicals due to excessive temperature. When it is filled with acids (such as orange juice) and alkaline substances, carcinogens are decomposed.

Avoid packing piping hot food in fast food boxes. Don't microwave instant noodles in a bowl. ）

No. 7 Other. (Common PC types, such as kettles, space cups, and baby bottles.) Department stores often use water cups made of this material, PA, that is, nylon, which are mostly used for fiber textiles and some home appliances and other products.

PC is prone to release the toxic substance bisphenol A at high temperatures, which is harmful to the human body. Do not heat when using and do not expose to direct sunlight. ）

Colored plastic bags are basically not used to hold food. Because the colored plastic bag is made of the first plastic bag of the split finger fiber, the plastic bag will be dyed when resynthesized, and toxic and harmful substances will be released when heated.

Rubbing the plastic bag, the sound is crispy can be used to hold food, and those that are muffled or even have no sound can be used to hold food.

Touch the plastic bag with your hands, if the feel is very smooth, or if you don't touch the small particles, the plastic imitation bag will pass the 3rd level.

Cut a small piece of plastic bags of different materials and press them into the basin containing water, all plastic bags that can directly hold food will float on the water, and plastic bags that cannot directly hold food will sink to the bottom of the basin. This is because the plastic bags that can hold food are made of translucent, colorless and odorless polyethylene particles, which have a lighter specific gravity than water, and the plastic bags under the water are made of **plastic, with other chemical components added, and the specific gravity is greater than that of water.