What's the use of plastic?
PET film, PET is mainly used in the plastics industry, film and bottle, and film can be used as packaging, decoration, or tape based capacitor insulation, PET is also used as a photographic film, PET are widely used for fiber, paper with PET with material viscosity of PET is bottle films and fibers. Therefore, recycling is also slightly different.The factory waste production of PET films and fibers can be used for polyester / epoxy resin powder coating, generally the relative molecular mass of these scraps is about 20 thousand, above the melting point of 260 degrees, is composed of a single linear PET. This will use polyol alcoholysis waste at 250 to 260 degrees, can have a relative molecular mass of about 2000 to 5000 of the low melting point polyester oligomer. Oligomerization polyester was added at 200 to 220 degrees with two yuan anhydride and esterifying agent to obtain acid value of about 3. 05 mgKOH/g, softening point of about 85 to 105 degrees, glass temperature of less than or equal to 50 degrees of product, this product is used to make polyester / epoxy resin powder coating.
Aluminum plastic composite film, aluminum-plastic composite film has BOPP/ aluminum, PE/ aluminum, etc., used for a variety of food packaging, after use of aluminum plastic composite flexible packaging bag, in fact, is a mixed waste, recycling is more difficult. The main methods of treatment are incineration and recovery of heat. China has a method of burning aluminum and crushing and adding stuffing to make low grade crude products. The effect is not very satisfactory. Here introduce the use of conductive aluminum materials, manufacturing anti-static function example, the procedure is as follows: waste plastic composite - Cleaning - pulverization, sieving - - aluminum - aggregate aid - extrusion - Part - extrusion products. The aluminum and plastic composite wastes are washed and crushed, screened and screened for 10 days, and then agglomerated, and the process can be made by the aggregate machine of Beijing plastic machinery plant. The technological condition of aggregate is water spraying: 95 degree water 0. 8 liters, feeding time: 3min; pumping time 5min, crushing time 10min, 15 kg per treatment. The aggregate material is then extruded into an semi-finished product and then added to the 20% aluminum powder, flame retardant, compatibilizer and other additives, and then the product is extruded and selected to be used as a conductive material.
Waste plastic recycled aggregate use are as follows1, PE PE of recycled aggregate, the recycled aggregate can be used for production of plastic sheeting, can also be used to make fertilizer bags, garbage bags, agricultural reclaimed water, fences, trees, pots, barrels, trash, geotechnical materials etc..2, PVC PVC of recycled aggregate, the recycled aggregate can be used to produce heavy bags, agricultural water pipe, such as sole, packaging film, packaging film materials including glass paper (cellophane), PE, PVC, PP, EVA, PVDC, PA, PET and all kinds of composite films. A packing film of a single material, which can be directly made into plastic products or made into various products after being sorted and cleaned. Composite films including different plastic composite film and paper and plastic, aluminum foil, film made of other materials such as recycling, regeneration after processing more complex such as: plastic laminated film, multilayer plastic composite films are PE/PP, PE/EVA/PE, PE/ /PA/ /PE PP/PVDC adhesive binder, and in recycling, will first be different the separation of the material. Separation by solvent separation.Paper plastic composite film, paper plastic composite film on recycling before the first paper separation, this is a method of paper plastic composite separation, separation equipment for electric heating with a chrome plated hollow barrel, the barrel is equipped with a hollow cylinder with a blade, the cylinder and the hollow cylinder to rotate in the opposite direction, a mixture of paper and plastic after the break of the adding barrel in the barrel by heating a mixture of the plastic melt in the barrel at the lower part of the discharge, the air in the hollow cylinder exhaust.
Agricultural film, agricultural film are mainly plastic film and plastic film films, mainly for PE film, PE PE/EVA, has shed film, PVC film, in recycling, should distinguish between PE and PVC film, agricultural film is dirty, and often clip with dirt, sand, grass, nails, wire etc, to remove the iron impurities and cleaning, recycling method is mainly granulation, if, with manual sorting, cleaning condition, after cleaning, waste film can be dried directly by hot extrusion method for the production of plastic products, such as pots, barrels, plastic flange etc..
