Plastic bottles bottom numbers 1-7, plastic bottles bottom numbers meaning? Huayun Chemical explains it for you!
Click： Time：2018-12-08 11:44:17
Plastic bottles bottom numbers 1-7, plastic bottles bottom numbers meaning? Huayun Chemical explains it for you!
We go to the supermarket to buy a plastic bottle packaging, you see the bottom of the plastic bottle with numbers, respectively, the bottom of the plastic bottle numbers 1-7, do you know the bottom of the plastic bottle number meaning is what? We Shenzhen Huayun Chemical Trade Co., Ltd. to interpret for you:
Our country in 1996 developed the use of plastic types of marking code, is composed of three arrows on behalf of the cycle of the triangle in the middle, plus the sign of the number, "triangle" is the plastic recycling sign, and with the number 1 to 7 to refer to the type of resin used in plastic. In this way, the identification of plastic varieties has become simple and easy, and the cost of recycling has been drastically reduced. Many countries around the world have now adopted this SPI marking scheme.
(1) "No. 1" PET PET bottle
The triangular symbol with "1" written on it indicates that it is a PET (polyethylene terephthalate) PET bottle, which is a widely used beverage bottle today. Its high transparency, others can see the contents at a glance; acid and alkali resistance, the belly is very large, loaded with a variety of acidic fruit juices, carbonated beverages; waterproof, high, not easy to have seepage of the situation, if only as a low-temperature drinks cans, it is very suitable for the reason why it is favored by the beverage business, often used to contain a variety of fruit juices, water, tea and other beverages.
(2) "No. 2" HDPE (High Density Polyethylene)
Plastic containers for cleaning products, bath products, and plastic bags used in supermarkets and shopping malls are made of this material, which can withstand temperatures up to 110 degrees Celsius, and plastic bags labeled for food can be used to contain food. Plastic containers containing cleaning products, shower products can be carefully cleaned and reused, but these containers are usually not good cleaning, residual original cleaning products, into a breeding ground for bacteria, cleaning is not complete, do not recycle.
(3) "No. 3" PVC Polyethylene
No. 3" of polyvinyl chloride (PVC), is gradually used less plastic containers in recent years. Research has found that this material can only be heat-resistant 81 ° C, high temperature is easy to have bad substances, and even the manufacturing process it will be released, has been rarely used in food packaging, if there are containers to use it as beverage containers, it is recommended that you do not buy.
(4) "No. 4" LDPE (low-density polyethylene)
Cling film and plastic film are made of this material. Heat resistance is not strong, usually, qualified PE cling film at a temperature of more than 110 ℃ will appear hot melt phenomenon, will leave some of the human body can not decompose the plastic agent. And, wrapped in plastic wrap food heating, food oils and fats in the food is easy to dissolve the harmful substances in the plastic wrap. Therefore, food into the microwave oven, the first to remove the wrapped plastic wrap.
(5) "No. 5" PP polypropylene
Microwave oven lunch box made of this material, resistant to high temperatures of 130 ℃, poor transparency, which is the only plastic box can be put into the microwave oven, after careful cleaning can be reused. Special attention should be paid to some microwave oven lunch boxes, the box body is made of PP 05, but the lid is made of PS 06 (polystyrene), PS transparency is good, but not resistant to high temperature, so it can not be put into the microwave oven together with the box body. To be on the safe side, remove the lid before putting the container into the microwave oven.
(6) "No. 6" PS (Polystyrene)
This is the material used to make bowl-type instant noodle containers and foam fast-food containers. It is heat- and cold-resistant, but it cannot be used in microwave ovens because it may release chemicals due to high temperatures. Also, it cannot be used for strong acids (such as orange juice) or strong alkaline substances because styrene, which is not good for the human body, will decompose. Therefore, you should avoid packing hot food in fast food containers.
(7) "No. 7" PC other plastic products
PC is a material that is used a lot, especially in the manufacture of milk bottles, space cups, etc. It is controversial because it contains BPA. Experts pointed out that, theoretically, as long as in the process of making PC, BPA is 100% converted into plastic structure, it means that the product is completely free of BPA, not to mention the release. However, if a small amount of BPA is not converted into the plastic structure of PC, it may be released into food or drinks. Therefore, extra care should be taken when using this plastic container.
Common sense: common mineral water plastic bottles are made of PTE, heat-resistant to 70 ℃, high temperature deformation and may produce harmful substances, so can not be placed in the car in the sun.
Microwave oven lunch box is made of PP material, 130 ℃ high temperature resistance, is the only plastic box can be put into the microwave oven, but some lunch box box lid is indeed other materials, can not be put into the microwave oven.
