What's the use of old plastics?
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.
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..
