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Advanced technology for PET bottle recycling

Update:26-03-2021
Summary:

PET, called polyester in Chinese, and many people call […]

PET, called polyester in Chinese, and many people call it polyester, is a linear thermoplastic. Generally, in the waste plastics industry, PET is the most commonly used bottle flakes, including cola bottles, mineral book bottles, and beverage bottles.

In the United States, the plastic with the highest recycling rate is also PET, especially PET carbonated beverage bottles, which are now almost all made by co-extrusion stretch blow molding with two-thirds of recycled PET bottle particles and one-third of new materials. Or other injection stretch blowing process. PET has good barrier properties, and the recovery rate is as high as 32%.

Due to the characteristics of light weight and good preservation, PET bottles have become the mainstream of today's drinking packaging. However, most of the PET bottles are disposable packaging products, and recycling has become a key issue for its development. The "bottle-to-bottle" closed-loop recycling technology is considered to be one of the most efficient recycling methods currently.

In the field of polyester bottles to bottles, Erema has developed its Vacurema® technology in 1998, and it has become the most used technology in the world in this field. This technology has become the world's most widely used technology for the recycling of used PET bottle flakes, PET waste and PE-HD bottle fragments. Its biggest technical advantage lies in: flexible requirements for the bulk density of the incoming materials, low requirements on the form and mixing of polyester waste materials, specifically it can be polyester secondary raw materials such as bottle flakes, broken grid materials, new materials, and edge materials Or mixed in different proportions. The product can be FDA-approved deep-drawn film, fiber or packaging tape. Another advantage is that it requires tolerance for the moisture of the feed (allowing up to 1.5%), allowing humidity instability, and the polyester melt viscosity can remain stable and low degradation.

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