I do not know the classification details and processing procedures, as well as the purchase of such equipment, the need for experienced master guidance, you can also join the cooperation,
Waste plastics recycling is conducive to environmental protection, saving resources. Thermoplastic waste is of good valueRenewable resources, which can be recycled, granulated or modified and then granulated, can be used again to produce plastic products.First, the characteristics of waste plasticsWaste plastics according to the occasion can be divided into three types: one is produced during the production of scrap materials, theWaste is relatively clean, less pollution and impurities, such as film, film production of substandard trimming, PP flatIn the production of silk silk, pipes and profiles in the production of material or part of the unqualified products, injection production in underfilled partsAnd so on. One kind is used, material system single plastic waste, such as the demolition of pipes, doors and windows, through strictSorting of packaging materials or other waste plastics products according to the type of resin; and another is difficult to distinguish or impossibleSeparate mixed waste plastics such as multilayer co extruded composite films, coated plastic products, plastics and other materialsSynthetic products, etc..
Different kinds of waste plastics have different characteristics. As far as impurity content is concerned, waste materials in the middle and outer corners of the factory produce impuritiesThe content of less than 0.1%, piled up scrap for a period of time and other products used for% impurity content 0.1 ~0.5%, mixed with aluminum, cloth and paper composite plastic waste impurities are often more than 10%. For used waste plastics,According to different use conditions, will include ultraviolet radiation, heat, oxygen aging effect, pollutants.Ring. For different shapes of waste plastics, the volume density of materials after crushing is very different, film, sheet, flatThe volume density of the crushing material is smaller, which is a problem that must be considered in the process of waste plastics recycling and granulation.Two. Pretreatment of waste plasticsFrom discarded packages, such as bags, shopping bags, bottles, cans, boxes and waste agricultural film waste plastics, inPretreatment prior to granulation. The pretreatment process mainly includes classification, cleaning, crushing and drying.Classification work is the classification of miscellaneous waste plastics products according to the type of raw materials and product shapes classification. By raw materialsClass sorting requires operators to have a good knowledge of identifying plastic varieties, and the purpose of sorting is to avoid different speciesThe resulting polymers are incompatible with recycled materials and have poor performance. They are classified according to the shape of the product to facilitate the use of waste plasticsThe crushing process can be carried out smoothly, because the film, flat and fabric used in crushing equipment with some thick and hard wareThe crushing equipment often can not replace each other.
