Agricultural films mainly include mulch film and shed film. The mulch film is mainly PE film. The shed molds include PE, PE/EVA, and PVC film. When recycling, PE and PVC film should be distinguished. Agricultural films are generally dirty and Often contains soil, sand, grass roots, iron nails, iron wires, etc., iron impurities must be removed and cleaned. The main recycling method is granulation--. If there is manual sorting, the cleaning conditions are cleaned and dried. The film can be directly used for hot extrusion to produce plastic products, such as basins, barrels, and plastic flanges. The uses of waste agricultural film recycled pellets are as follows:
1. PE recycled pellets, PE recycled pellets can be used to produce agricultural film, and can also be used to make 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 the packaging film include cellophane (Sailoling), PE, PVC, PP, EVA, PVDC, PA, PET and various composite films. The single-layer packaging film of one material can be directly made into plastic products or granulated into various products after sorting and cleaning, just like agricultural films. 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 includes PE/PP, PE /EVA/PE, PE/adhesive/PA/adhesive/PE, PP/PVDC, etc. Before recycling, different materials must be separated first. Solvent separation can be used for separation.
4. Paper-plastic composite film: The paper-plastic composite film needs to be separated from paper and plastic before recycling. This is also the method of paper-plastic composite separation. The separation equipment is a chrome-plated hollow barrel with electric heating. 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 lower part of the barrel. The air will take away the exhaust gas.
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