Industry News

Industry News

What’s the meaning of the number at different plastic products?

There are 1-7 numbers at the bottom of the triangle on each Plastic Bottle.Each number represents a different material,has nothing to do with security.

"1" PET commonly used in: mineral water bottles, carbonated beverage bottles.

"1" on behalf of PET polyethylene terephthalate (polyester), the general mineral water, carbonated beverages and functional beverage bottles are made of this material. A high temperature easily deformed, there may be someDissolve harmful substances on the human body, hot weather, do not put mineral water on the open air or car, do not directly into the Coke bottle of boiling water.

Use: It can only heat to 70 ℃, easy to deformation.Only for warm or cold drinks, loaded with high-temperature liquid, or heat is easy to deformation, and release of harmful substances.Scientists also found that the first plastic used 10 months after the release of carcinogens may DEHP, It is toxic for the testis.

Note: Do not use recycled hot water bottles.Not on the car in the sun; do not install wine, oil and other substances.
So drink bottles and so run out on the lost, not to be used as a cup, or used to do storage containers by loading other items, so as not to cause health problems but not worth the candle.

2                 1

"No. 2" HDPE commonly used: cleaning supplies, bath products, packaging.

"2" on behalf of HDPE (high density polyethylene), supermarkets and shopping malls before the widely used plastic bags with this material, more high temperature, but difficult to clean, easy to breed bacteria;

Use: can be carefully reused after cleaning, but these containers are usually not easy to clean, leaving the original cleaning supplies, a hotbed of bacteria, you'd better not cycle. Do not use it as a cup, or use it as a storage container for other items.

Note: it is difficult to thoroughly clean, it is recommended not to cycle.


"3" PVC commonly used: common raincoats, building materials, plastic film, plastic boxes. Rarely used for food packaging.

"3" on behalf of PVC (polyvinyl chloride), in which the plasticizer containing harmful substances, encountered high temperature and grease easily precipitate, at present, many plasticizers in Europe has been banned, and China is relatively small In the packaging of plastic food products;

Use: This material plasticity good, cheap, so the use of very common. Only heat 81 ℃, high temperature prone to harmful substances, and even the process of manufacturing will release toxic substances. If the food into the human body, may cause breast cancer, neonatal birth defects and other diseases.Containers of this material have been less used for packaging food. If used, do not let it heat. Difficult to clean and easy residue, do not cycle. If you do not buy drinks.

Note: Do not use for food packaging


"4" LDPE commonly used: plastic wrap, plastic film.

"4" on behalf of LDPE (low density polyethylene), the current market, plastic wrap, plastic film, mostly with this material, heat resistance is not strong, qualified PE cling film in the temperature exceeds 110 ℃ will appear hot Melting phenomenon, wrapped with plastic wrap heating food, food fat is easy to cling film dissolved in the harmful substances out;

Use: heat resistance is not strong, usually, qualified PE cling film in case of temperature exceeds 110 ℃ when there will be hot melt phenomenon, will leave some body can not break down the plastic agent. Food in the grease is also very easy to wrap in the harmful substances dissolved out. Therefore, the food into the microwave oven, first remove the wrapped plastic wrap. High temperature produces harmful substances, toxic substances into the body with food, may cause breast cancer, neonatal birth defects and other diseases.

Note: use microwave heating, do not wrap food wrap.


"5" PP commonly used: microwave lunch boxes.

"5" on behalf of the PP (polypropylene), microwave lunch boxes made of this material, resistant to 130 ℃ high temperature, poor transparency, some lunch boxes to PP manufacturing, the lid is to PS (polystyrene) PS transparency is good, but not high temperature, it can not be put into the box together with the microwave;

Use: common soy milk bottles, yogurt bottles, fruit juice bottles, microwave lunch boxes. Melting point up to 167 ℃, is the only safe into the microwave plastic box, can be reused after careful cleaning. Note that some microwave lunch boxes, box to 5 PP manufacturing, but the lid is to No. 1 PET manufacturing, PET can not withstand high temperatures, it can not be put into the microwave with the box.

Note: When placing in a microwave oven, remove the cover.


"6" PS commonly used: bowl of instant noodles, fast food box.

"6" on behalf of PS (polystyrene), which is used to make the bowl made of instant noodles, foam fast food box material, heat and cold, but can not be placed in the microwave, try to avoid fast food box pack hot food;

Use: heat and cold, but can not be placed in the microwave, so as to avoid the high temperature and release of chemicals. And can not be used to carry strong acid (such as orange juice), strong alkaline substances, because it will break down on the human body is not good polystyrene, easy to cause cancer. Therefore, you should try to avoid using fast food boxes packaged hot food.

Note: Do not use microwave oven to cook noodles with instant noodles.

7      8


"7" PC other types commonly used in: kettles, cups, bottles.

"7" on behalf of other types of PC, used to make bottles, plastic cup space cups, but also try not to dress water.

Use: Department stores such materials commonly used as a gift cup. It is easy to release the toxic substances bisphenol A, harmful to humans.

Note: Do not use heat, do not direct sunlight in the sun.