Post-Consumer Scrap Film Recycling System and Process

摘要

A system and method for processing a supply of post-consumer scrap linear low density or low density polyethylene film into near-virgin quality blown film product. The method includes tearing the supply of film in a shredder, wherein the surface area of the film is exposed, including delaminating the film. The torn supply of film is washed in a water bath including a surfactant. The film is agitated in the bath containing the surfactant wherein contaminants on the film are removed from the film. The washed film is ground into smaller pieces and additional washing of the ground film in a rotating friction washer and a sink float tank occurs wherein additional contaminants are removed from the film. The ground film is then dried and compacted without addition of water into granulated objects of near-virgin quality blown film product.

主权项

1. A system for processing a supply of post-consumer scrap plastic film into near-virgin quality blown film product, comprising:
a shredder configured to tear and delaminate the supply of film, wherein surface area of the film is exposed; a water bath configured to wash the shredded film with an additive having a surfactant and agitate the shredded film in the water bath to remove contaminates therefrom; a wet grinder configured to grind the washed film; a friction washer for washing the ground film to remove additional contaminates from the ground film;wherein at least one of the water bath or the friction washer contains hot water;
a postwash sink float water bath configured to wash the ground film and subject the ground film to at least one of mechanical agitation and hydraulic agitation; a dryer for drying the washed film; and a compactor configured to process the dry, washed film into granulated objects of near-virgin quality blown film product.