What is mechanical recycling of PET?

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Introduction

In a world increasingly aware of the environmental impact of plastic waste, finding sustainable solutions is crucial. One such solution gaining traction is the mechanical recycling of PET, or polyethylene terephthalate. PET, a widely used plastic, finds its way into numerous products, from beverage bottles to food packaging. This article explores the concept of mechanical recycling, its process, advantages, and challenges, shedding light on its role in promoting a more sustainable future.

Mechanical recycling is a conventional recycling method. After plastic containers are sorted and separated from associated contaminants, washed, and dried, they are ground (flaked), melted, and reprocessed into plastic pellets by extrusion.

Recycling Process

The first step in the mechanical recycling process is collecting the used plastic and delivering it to a recycling center so it does not end up in a landfill, on the roadside or tossed in the natural environment. Households and businesses can get the cycle started by providing separate bins for garbage and recycling and making sure the recycling is not contaminated by garbage. Plastic containers should be rinsed before they are thrown in the bin, but paper labels do not need to be removed. Lids should be removed and thrown in the garbage.

The next step takes place at a recycling center.  Optical scanners are used to identify different types of plastic resin, which are categorized by number, and plastics are sorted and separated from each other and other materials such as paper and glass. The used #1 and #2 plastic bottles and containers are then crushed (where caps are removed if any are remaining) and baled to be sent to a plastic recycling center.

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