Introducing transparent PET flake
Transparent PET flake has received special attention lately, for its unique features and recycling possibility. Special indicators should be considered for its recycling, otherwise the product will not have useful performance and will be sold at a lower price.
What is a transparent PET flake?
What is a transparent PET flake? What is its function, and why has their recycling become one of the most important global topics in recent years? In this part of the article, we provide useful information about this type of recyclable product. Of course, we have mentioned some points to reduce the pollution caused by this type of recycling.
Polymer flake is a widely used type of polymer obtained from the integration of two other types of polymers referred to as PET or polyethene terephthalate in the trade. This product is used especially because of its unique features such as transparency and non-fragility, and in recent years, since its recyclability was noticed, it has become one of the most widely used types of polymers in the industry.
Factories active in PET flake recycling usually pack them in portable bags, although they may sometimes be packed in jumbo bags. Stay with us to get more knowledge about these product types.
The difference between washing transparent PET flake and plastic
The recycling process of transparent PET bottles is quite different from other plastics because of special criteria and indicators available for washing them. Failure to pay attention to the mentioned criteria will seriously reduce the quality of recycling. In plastic recycling, the clean appearance and the transparency of the existing material are sufficient, with PET flake, in addition to the appearance and transparency, certain principles must also be considered.
It goes without saying that when a factory is involved in transparent PET flake recycling and violates some of the mentioned criteria, it will be returned and the recycled steps must be repeated. Another main difference between the recycling of this type of product and other plastics is the use of washing machinery. Usually, in the production of recycled plastic, this machine is not used, unless necessary, but it is mandatory to use it to recycle PET flakes.
PVC contamination during PET flake recycling
Keep in mind, the amount of PVC contamination in transparent PET flake recycling should be especially evaluated because if its amount is more than reasonable and allowed, it may destroy perc-pet in the next processes. That is why special solutions must be considered to eliminate or reduce this pollution.
In the following, we provide a beneficial solution to reduce current pollution. Many buyers do a PVC test on the existing product before making a purchase, and if the number is higher than the specified limit, they will not buy it, this is the reason why companies in the field must seriously know about all the available indicators and keep them in mind while product recycling.
Usually, the amount of PVC pollution is expressed in terms of PPM, the higher the amount, the lower the quality of the product. That's why its low level is a sign of the cleanliness and transparency of the PET flake.
Special PET flake recycling machinery
To produce a transparent PET flake, it is necessary to have a PET flake hot wash line because, after recycling the PET flake, various tests are performed to confirm its cleanliness and transparency. However, in the last step, using an ordinary hot wash line is mandatory to obtain a certain level of cleanliness. Still, it is insufficient because the existing contaminations should be reduced to the minimum.
The Flat Tank machine is one of the main devices used to recycle PET flakes. This device is generally responsible for separating and washing PET flakes. While washing, first the lid and label are separated from the PET flake and all necessary actions are performed by the Flat Tank machine, after separating the lids and labels, they can be transferred to another part of the machine. Operating the mentioned machinery requires special knowledge and skills and must be learned before action.
Beneficial strategies to reduce pollution in PET flake recycling
As mentioned in the previous section, the level of PVC pollution during the transparent PET flake recycling should be accurately evaluated, if it is higher than the specified limit, the PET flake will be sold at a lower price or the recycling process must be repeated.
The following solutions can be considered to reduce the amount of PVC pollution:
- Using a hot wash machine
- Using a sand gaurd or fraction machine
- Using a centrifuge or dehydrator
- Using advanced separation devices
- Controlling the incoming load.
One of the useful ways to determine whether the bottle is PET or PVC, measure the end of the bottle, if it is moulded in a line, then the material used is PVC, and if there is a point, PET is used to make it. Many people mistakenly think mineral water bottles are made entirely of PET and shampoo cans are made of PVC.
Tips about transparent PET flake
Using a hot wash machine in transparent PET flake recycling is mandatory because the result will be cleaner and more transparent. The role of this device is so important that the PET flake recycling line is sometimes called a hot wash line. Note that checking the temperature and PH level is of particular importance in PET flake recycling, the pH should be alkaline, so sodium hydroxide is used to create an alkaline environment. If the amount of sodium hydroxide is high and not completely washed off, it can cause yellow spots on the PET flake.
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