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Plastics are used in nearly all of the major industries. Automobiles, medical equipment, and computers (among many other things) all use them. They have become essential to the manufacturing of such a large number of products, that the creation, molding and distribution of plastics are a sort of mother industry, benefiting all of the others.

PolyClean USA has been a part of this industry since 1999. Our mobile plastic servicing platform offers a variety of services designed to improve the overall quality of our clients’ pellet inventories. One of the most important tasks we perform is the screening of plastic pellets.

What is screening?

When a manufacturer receives its pellets, they have already been formed into polymers and diced up into usable pieces. Sometimes, however, pellets get cut incorrectly. As a result, some are too big and some are too small. Foreign matter can get introduced as well. All of these factors can lower the overall quality of the material. The only way to improve it again is to remove all the trash. Separating the good from the bad is called screening.

How does screening work?

The basic principle of screening out unnecessary particles is simple and already familiar to you. It happens everywhere. Your kids probably filter out pails full of sand to find sea shells. Pasta requires you to strain out the water. The screens on your window let in light, sound and breeze but stop leaves and bugs.

When we do it, the process is a little more complicated. We load the pellets onto a screen equipped to use a progressively diminishing gyratory motion. Basically, the screen moves in such a way that it shakes down the pellets, forcing them to spread out over. Just as they do with your potato chips, all the “crumbs” then settle to the bottom where they drop through the screen and are collecting for recycling or disposal.

Unlike many machines, our ROTEX screeners do not bounce the pellets. Although intuition tells us that adding a vertical component helps somehow, screening the plastics can only really happen when they are in contact with the screen. Using exclusively horizontal movement, our pellets remain on the screen for the entirety of the process. This makes our method very effective.

What do you call the leftover material?

The “stuff” that ends up getting removed from the pile can be called lots of things. Pellets that aren’t shaped correctly are referred to as “miscuts.” Miscuts can be any size or shape that just isn’t right.

“Fines” are small remnants of pellets that get torn or otherwise damaged during manufacturing or shipping. “Snake skins” are long ribbonlike strips that are formed when pellets get dragged along hot surfaces. “Fluff” is a collection of ribbons that are smaller than snake skins (called “angel hair”) that collect into piles.

Anything else that we screen out of the material, such as dust or wood particles, we just call “garbage.”

Screening services

If you have a need for a plastic pellet screening, contact us today. Our mobile platform is designed to come to you. Don’t worry about transporting your material. Don’t worry about whether we’ll do a good job. We’ll bring the equipment to you and take care of it all in-house. We only leave when you’re satisfied. Click here to request a quote.