Do you know what PET is?
Do you know the types of PET that exist?
What is your production process? What applications does it have?
The process for the production of packaging is described below:
The resin is presented in the form of small cylinders or chips, which dry are melted and injected under pressure in multi-cavity machines from which the preforms are produced (containers not yet inflated and that only present the mouth of the container in definitive form). Then, the preforms are subjected to a precise and gradual heating process, then they are placed inside a mold and stretched by means of a rod or piston until they reach their final size, then they are inflated with pressurized air until they take the shape of the mold and the typical package is formed.
Using a flowchart, the complete production process of a PET container is described, considering from the raw material to the finished product.
Among the most important characteristics that the PET presents, there are:
The physical properties of PET and its ability to meet various technical specifications have been the reasons why the material has reached a relevant development in the production of textile fibers and in the production of a wide variety of packaging, especially in the production of bottles, trays, strapping and sheets.
Among some of the applications that PET has, there are: carbonated beverage containers, mineral waters, oil, juices, teas, wines and alcoholic beverages, detergents and cleaning products, cosmetic products, sauces and other foods, chemical products and lubricants, products for agricultural treatments, films, food containers, audio/video tapes, photography, electrical, electronic applications, special packaging and X-ray.
The PET packaging recycling process consists of three stages:
During this stage, it is collected and transported to a center, where it is segregated, decontaminated, compacted or ground and stored. The result of this stage is dirty flake and bales of bottles.
Recycling is an industrial process based on physical, chemical and thermal processes, in which dirty flakes or bales pass to other types of industries where the second stage is carried out, consisting of grinding, washing of the flakes, chemical control, separation, drying, pelletizing, post-condensation and storage.
the third stage is where the already cleaned flake is sold to product manufacturers, which from these inputs produce bottles, pillows, face masks, coifs, strapping, plastic, paint rollers, thermal filler fiber for jackets and sleeping bags, polyester fiber for clothing and even food-grade packaging.