Herbold Meckesheim U.S.A. now is using density separation tanks, likewise called sink-swim tanks, that utilize water to different plastic scrap of various densities along with different pollutants from homogenous plastics, says the company, which is a subsidiary of Germany-based Herbold Meckesheim GmbH.
Items are presented to the steel sink-swim tanks by a feeding screw or conveyor at one end, says the business. Three or 4 transportation drums (turning paddles) then move the product from one end of the tank to the other.
During the procedure, greater density plastics like polyethylene terephthalate and polyvinyl chloride, and pollutants sink to the bottom of the tank while lower density plastics like polyethylene and polypropylene float on the surface area of the water.
According to Herbold Meckesheim, lighter plastics leave the tank through a leading discharge setup and much heavier products are constantly eliminated by a scraping chain conveyor installed listed below the bottom of the tank. The tank’s V-shaped bottom has actually been created to help make sure that sinking scrap or waste can be left from the bottom without any build-up or accumulation.
Tanks are available in 3 sizes, with the tiniest measuring 78 inches by 31 inches and the biggest determining 157 inches by 71 inches. Drive motors are available in a variety from 1.5 horse power (hp) as much as 15 hp. “Throughputs vary depending on material and tank size,” the business says.
Herbold Meckesheim USA is a North Smithfield, Rhode Island-based designer, producer and installer of size-reduction equipment and wash line systems for the plastics market, concentrating on the recycling of commercial and postconsumer plastics.
