Recycling method of foam product

Abstract

The invention discloses a method for recycling foam products, which comprises the following steps of: cleaning waste foam products, crushing, drying, dissolving and purifying to obtain polystyrene precipitates; the polystyrene precipitate is a raw material for producing the foam product, then carrying out heating melting treatment on the polystyrene precipitate to obtain a polystyrene melt, then injecting the polystyrene melt into a mold, and then carrying out cooling treatment and molding treatment on the polystyrene melt in the mold to obtain the foam product. Therefore, a new polystyrene foam product is obtained, and the recycling of the waste foam product is realized. According to the method, the waste foam products can be recycled, the situation that the waste foam products which are difficult to degrade are landfilled, and serious pollution is caused to the environment is avoided, sustainable cyclic utilization of polystyrene resources in the foam is facilitated, and wide application and popularization are facilitated.

Description

technical field [0001] The invention belongs to the technical field of foam recovery, and more specifically relates to a method for recycling foam products. Background technique [0002] Foam plastic is a kind of polymer material formed by a large number of gas micropores dispersed in solid plastic. It has the characteristics of light weight, heat insulation, sound absorption, shock absorption, etc., and its dielectric properties are better than that of matrix resin. It is widely used, almost All kinds of plastics can be made into foam plastics. Foam molding has become an important field in plastic processing. According to their cell structure, they can be divided into closed-cell, open-cell and reticular foams. Almost all cells of closed-cell foams are Disconnected, all cells of open-cell foams are almost connected, and foams with almost no cell walls are called reticulated foams. According to the density of foams, they can be divided into low foaming, medium foaming and hi...

AI Technical Summary

Problems solved by technology

[0003] With the development of society, more and more foam products appear in people's lives, and thus more and more foam products become discarded foam products. Due to the refractory nature of foam products, the existing technology Most of the waste foam products are disposed of by landfill, which not only causes serious pollution to the environment, but also is not conducive to the sustainable recycling of polystyrene resources in foam. Therefore, we need to propose a foam Product recycling methods

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