You can try to blow the deformation with a hair dryer first, then correct it by hand and then cool it quickly with cold water. So, slowly correct it until it works. But it's hard to get back to the same state as before. Moreover, after plastic is deformed by heat, it will emit some toxic components, which are harmful to the body.

Plastic is a material with resin as the main component, which can be molded into a certain shape at a certain temperature and pressure, and can maintain the established shape at room temperature. Plastics are usually divided into thermoplastics and thermosetting plastics:

Thermoplastics refer to plastics that can soften or even melt in a certain temperature range and solidify into a certain shape after cooling, such as pe, PP, PVC, PS, PA, PC, etc. , accounting for more than 95% of the total plastic. Thermosetting plastic refers to the chemical change of resin during heating, from linear polymer to block polymer structure, and then it will not melt when heated, and it is insoluble in organic solvents, such as phenolic plastic, urea-formaldehyde plastic, epoxy resin, unsaturated polyester and so on.

Extended data:

Preparation method of polyethylene:

There are many ways to make polyethylene, and the most common one is to polymerize ethylene at 200 ~ 300℃ and 1000 ~ 2000 atmospheric pressure. In polyethylene, no other substances are doped. The polyethylene prepared by this method has low density, soft texture and high stability to sunlight, air, moisture and chemical reagents, so there is no need to add stabilizers and plasticizers, which are mostly toxic or highly toxic.

Plastic bottles are easy to carry, not afraid of falling, acid and alkali resistant, convenient to produce and beneficial to recycling.

References:

Baidu encyclopedia-plastic bottle