Plastic Film Washing Line ? An Integral Aspect in Recycling Process of Plastic

Posted by Tanya Zhou on July 15th, 2016

The recycling process of plastic films remains incomplete without a plastic film washing line. It contains a well-defined set of equipment for washing that make use of higher speed and friction for the cleaning of soiled or dirty films. It is capable of washing all types of films including LDPE films, PE films as well as PP films. It makes the film ideal for further pelletizing process that incorporates melting and reprocessing of plastic.

Looking at the high-potential importance of such washing line, the leading pelletizing system manufacturer also offer customized and well-designed washing lines for plastic films. Moreover, the final reprocessed pellets that you obtain after the pelletizing process, finds its further usage in the manufacture of different new products.

What actually it comprises?

Prior to making use of a plastic film washing line, it is important to acquire complete information about its essential components that it comprises. To begin with, a brief description about its core equipment is hereunder –

Shredder or granulator

The most important equipment that you will find in every washing line is either a shredder or granulator that is responsible for the process of size reduction. With this process of size reduction, you can easily resolve several issues of plastic film recycling including –

•          Large plastic strips or whole bags can tangle the washing equipment based on rotary and conveyors thereby slowing down the production rate and increasing the risk of damage to the machinery.
•          The LLDPE film naturally shows the tendency of sticking and clumping together that can further create hurdle in the washing process.

High speed friction washer

Another most recommended, but not essentially required equipment in the process of plastic film washing is high speed friction washer. It incorporates a fast and long rotating shaft with several tilted paddles. You can also find a tunnel of mesh screen for dewatering process surrounded with the rotating shaft. It feeds the dirty plastic into vertical feeder thereby ensuring the emergence of cleaned films at the top. You can ideally place these washers after the wet granulators to get better results.

Tank for gravity separation

This tank is essential for two distinctive purposes –

•          It ensures cleaning by soaking the film in water loosening debris.
•          Only the plastic film will float and the heavier contaminants sink.

Drying system

The last equipment involved in the process of washing plastic film is drying. Thus, a drying system becomes a necessity to dry the wet film. The leading pelletizing system manufacturer offer high-end drying systems to serve this purpose. In fact, there are two types of drying systems available in the market, which include dewatering machine and screw press. Both are equally effective in their tasks and accompany their respective pros and cons.