The most popular waste plastics become the inner b

2022-08-07
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The production of washing machine is one of the industries in which the consumption of polypropylene (PP) in household appliances is relatively concentrated. The inner barrel, cover plate, base and turbine of washing machine are all made of PP. A washing machine factory with a production scale of 1 will cause that the hardness cannot be displayed or the hardness value is lower by million sets. The annual demand for barrels is at least about 3kt. With the base, turbine, shell and other components, the total consumption of plastic is about 20000 t

at present, the annual production capacity of domestic washing machines is about 12million sets. It is estimated that the domestic washing machine industry needs about 200000 tons of PP annually; Among them, the special material for washing machine inner barrel is about 40000 T. at present, the domestic special material can not meet the demand of the domestic market in terms of quantity and quality. Therefore, the raw materials used for domestic washing machines basically rely on imports. PP inner barrel material is a high value-added product, and its development and production will bring significant economic benefits to the enterprise. Therefore, recycling the inner barrel of washing machine with waste PP plastic came into being, Of course, the waste PP plastic here is mainly the broken material of disassembled washing machine barrels. There is no essential difference between the recycling technology of household appliance plastics and the general plastic recycling technology. Its characteristic is that the recycling of household appliance plastics requires pre-treatment such as disassembly and classification. Therefore, household appliance recycling technology is an important part of household appliance plastic recycling technology. However, the biggest problem is the surface black spots. The black spots are mainly impurities, which will often lead to disastrous equipment or personal injury accidents and non molten objects, affecting the product appearance, which requires strict sorting, cleaning and crushing. Huang junzuo

liuyichun et al. Studied the recycling technology of household appliance plastics, including separation and classification technology, identification technology, material recycling technology, chemical regeneration and thermal decomposition reduction technology, which can sort about 95% of the plastic film out of the mixed waste, and the recycling technology of cooling medium and thermal insulation materials

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