Although there are many materials for plastic bottles, the functions and characteristics of plastic bottles are different depending on the material, so please try to compare plastic bottles and plastic bottles.
 
Features: PE is soft and has a waxy texture to the touch. Compared with the same plastic, it is relatively light in weight and has a certain transparency. The flame when burning is blue.
 
Poison: Non-toxic, harmless to human body.
 
The high-density polyethylene (HARE) sold on the market has a density of 0.945 to 0.9 g/cubic centimeter and a melting point of 125 to 137 degrees.
 
Linear low density PE (LLARE), density 0.925 g/cm3, melting point 120-125 degrees.
 
High pressure low density PE (HP-L magnetic), density 0.918 g/cm3, melting point 105-115 degrees.
 
Application of polypropylene (PP): microwave tableware, pots, plastic buckets, thermos, woven bags, etc.
 
Features: high chemical stability, good hygienic performance, high heat resistance. The tableware for the electronic microwave oven is made of plastic.
 
Poison: Non-toxic, harmless to human body.
 
This polymer can have three three-dimensional structures: isoregular, regular, random polyakrole, the first two crystalline, the latter cannot. The basic structure of commercially available polypropylene products is that the melting point is 164 to 170 degrees, the density of the crystalline part is 0.935 g/cm 3 , and the non-clean part is 0.851 g/cm 3 .
 
The biggest disadvantage of PP is that it is easy to age. Now, overcome with antioxidants and absorbents such as cordy.
 
Polyester (PET) applications: plastic bottles, medicine bottles, cosmetic bottles, oil bottles, and various bottle caps and thermal insulation caps.
 
Features: good transparency, not easy to be damaged, good chemical stability, suitable for the packaging of various liquid or solid drugs. Good shielding against UV rays.
 
Poison: Non-toxic.
 
PET plastic bottles are the mainstream of beverage packaging. PET plastic bottles are dominant in China's beverage packaging industry. So far, no plastic bottles have been found to be better than PET. The PP bottle is mainly formed by the one-step method and the 2-step method of heating. The PP bottle formed in the molding machine has the advantages of transparency, strength, heat resistance, and the price is lower than that of the radical material. 100°C possible
 
In the material bottle, high-precision PP plastic bottles can be produced by 0.1% - 0.4% Sandy Ekron reduction nucleating agent, spraying, blowing, injection and other methods. PP plastic bottles can withstand temperature, the bottle shape sensitivity is very good, and the safety, hygiene and content of the food feel are inferior, and the price is cheaper than PET, PS, PE and other materials. PP plastic bottles, the scale of use in the beverage packaging market has been close to PET bottles, and the skills of plastic resins, anti-penetration agents and mechanical equipment are constantly developing. PP containers can replace glass, PET and PVC containers, and have broad market prospects.