Daily plastic products

1, PET, polyethylene terephthalate

Main applications:

The most common use as beverage bottles and other transparent screen protection film protective film. PET can also be spinning, that is, we often say polyester. In addition there are many engineering applications PET

Caution:

Non-toxic, but the synthesis process may remain single, low molecular weight oligomers and side reaction products such as diethylene glycol, these are some toxic, PET raw material for beverage bottles countries have strict standards.

PET plastic higher melting point. But generally do not recommend reusing bottles, especially for loading water. Since PET bottles are generally thin, manufactured using blow molding method, when the bottle is heated to about 90 ℃ rearrange, and the internal stress due to the role of PET molecular chains, and the contraction distortion of the bottle experience, this time using easily result in burns. The higher temperatures will increase the risk of harmful substances in the material eluted.

2, PE, polyethylene (high density polyethylene: HDPE; low density polyethylene: LDPE)

Main applications:

PE is currently the most widely used plastic, with different modification methods, PE can be used in all aspects of daily life. More representative, including plastic buckets, film, paper cups wall, pipes and cable jacket and so on.

Caution:

PE itself is non-toxic. However, the production will be used in processing or modification of some additives, such as fillers, pigments or stabilizing aid. Some additives are toxic. Since PE products will soften or even melt at higher temperatures, you should try to avoid higher water temperatures under 100 ℃.

3, PVC, polyvinyl chloride

Main applications:

PVC is now used for the manufacture of some cheap leather, floor mats, water pipes, etc.; due to its good electrical performance has a certain self-retardant properties, is widely used in the manufacture of wire and cable sheath. In addition, PVC is widely used in industrial fields, especially for acid corrosion in high demand areas.

Caution:

PVC production uses a lot of plasticizer (plasticizer such as DOP) and heat stabilizers containing heavy metals, and the synthesis process is difficult to eliminate the presence of free monomers, which are considered to be toxic. So PVC in contact with the human body, especially in medicine and food applications, is gradually being replaced by PP, PE.

PVC is a non-high-temperature plastic, can not be used at higher temperatures.

4, PP

   Main applications:

   PP is also very broad range of use, everyday items such as packaging, toys, basins, buckets, hangers, cups, bottles, etc.; engineering applications such as car bumpers. PP spun yarn is known as polypropylene, textiles, non-woven fabrics, ropes, nets and other products are common.

Caution:

 PP and PE processing methods and the use of similar, itself non-toxic. Possible threats from the processing and modification additives. Especially due to poor weather PP, used in the production of anti-aging agent may contain heavy metals. Products compared to PE, PP products slightly better heat resistance, typical Lock & Lock glass using temperature can reach 110 ℃, but then there is a high temperature melting softening and dangerous, and should be avoided.

5, PS

Main applications:

Cheap transparent products, foam, CD boxes, cups, snack, insulation lining and so on.

Caution:

Toxic materials for the synthesis of polystyrene by appropriate synthesis process, has very little residual monomer polystyrene, glass, etc. but now has very little use of this material. Polystyrene flammable, especially after PS foam. Combustion will produce large amounts of toxic gases. In some high-level house on fire incidents, due to the insulating layer materials using a PS foam board is widely used, a lot of smoke and toxic gases generated by the fire became the main reason leading to a large number of casualties.