Agricultural films mainly include mulch film and shed film. The mulch film is mainly PE film, and the shed mold has PE, PE / EVA, PVC film. When recycling, PE and PVC film should be distinguished. Agricultural film is generally dirty, and It often contains soil, sand, grass roots, iron nails, iron wire, etc., to remove iron impurities and clean, the recycling method is mainly granulation, if there is manual sorting, cleaning conditions, after cleaning, drying waste The film can be directly used to produce plastic products by hot extrusion, such as basins, barrels, plastic flanges, etc. The purpose of waste agricultural film recycled pellets is as follows:
1. PE recycled pellets, PE recycled pellets can be used to produce agricultural film, can also be used to manufacture fertilizer packaging bags, garbage bags, agricultural recycled water pipes, fences, tree supports, pots, barrels, garbage bins, geotechnical materials, etc.
2. PVC recycled pellets, PVC recycled pellets can be used to produce heavy packaging bags, agricultural water pipes, shoe soles, etc.
3. Packaging film: The materials of packaging film include cellophane (cellophane), PE, PVC, PP, EVA, PVDC, PA, PET and various composite films. Single-layer packaging film of one material can be directly made into plastic products or granulated into various products like agricultural films after sorting and cleaning. Composite films include composite films of different plastics and films made of plastic and paper, aluminum foil, and other materials. The recycling process after recycling is more complicated, such as: Multi-layer plastic composite film, multi-layer plastic composite film has PE / PP, PE / EVA / PE, PE / adhesive / PA / adhesive / PE, PP / PVDC, etc. Before recycling, different materials must be separated first. Solvent separation method can be used for separation.
4. Paper-plastic composite film: The paper-plastic composite film needs to be separated from paper-plastic before recycling. This is also the method of paper-plastic composite separation. The separation equipment is a chrome-plated hollow cylinder with electric heating. The cylinder is equipped with a A hollow cylinder with blades. The barrel and the hollow cylinder rotate in opposite directions. The crushed paper-plastic mixture is added to the barrel. The plastic on the heated mixture in the barrel is melted and discharged from the bottom of the barrel. The hollow cylinder The air takes away the exhaust.