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PET film is one of the types of polymeric materials. Plastic, which is obtained by carrying out a chemical process from gas condensate and oil. The use of PET films is possible in almost all industries. It is actively used in the food industry and housing and communal services.
PET film production
PET production takes place in two ways:
- Crystallization then drying. The polymer is crystallized by bringing it to a temperature of 196C. After the crystallization procedure, the material goes to the dryer, where it is checked for the amount of moisture, and then to the extruder hopper.
- It is carried out using a twin-screw extruder with degassing zones and long screws, which are necessary for vacuuming.
One of the leading PET companies is Izolit Trade https://petpremium.ru/.
Recycling technology
Since PET film does not undergo decomposition, a technology for recycling plastic was developed (when processing this type of material, the physical properties do not change) for reuse. That significantly reduces the cost of PET raw materials. The process consists of bulkhead, crushing, washing, cleaning from impurities, drying. Further, polyethylene terephthalate flakes appear for production.
History of PET packaging development
PET was initially marketed as a fiber, quickly becoming a leader in the packaging industry. Today the demand for this material is growing every year.
The history of development dates back to the 40s of the 20th century. Moreover, PET was developed in Europe and the United States at almost the same time. In the USSR, research began at the All-Russian Research Institute of Artificial Fibers (Mytishchi) in 1949. Where the name “Lavsan” was invented. South Korea and Japan were the first to develop very actively in this direction. A little later India, now China is gradually joining them.
Main characteristics of ARET
Different types of PET films are produced depending on the addition of chemicals. One of the types of APET is a modification of PET, amorphous polyethylene terephthalate. You can buy APET by following the link https://petpremium.ru.
This increased amorphous film contains isophthalic monomer. It is characterized by high chemical, thermal and weather resistance. This type of film has a very low permeability to carbon dioxide and oxygen. This increases the shelf life of the product and allows you to preserve the flavor.
It is used in the production of thermoformed packaging, packaging containers for storing frozen products. allows you to ensure the tightness of the package. For the production of boxes, for example, for sweets, containers for confectionery.
If necessary, the APET film is coated with an additional high-barrier layer. There are also colored types of films (transparent, white, yellow, orange, red, etc.). Color printing on film is also possible. In terms of light transmission, APET sheets can be compared with polycarbonate or acrylic, and their strength is higher. The financial component of APET sheets is cheaper than, for example, polycarbonate.