Conventional recovery process use double-stage single-screw extrusion granulation equipment in series production PS renewable particles can generally be divided into hybrid particle light translucent particles, opaque particles and small amounts of impurities. Wherein the high purity translucent colored particles and opaque particles mainly for the production XPS board, PS foam frame, PS foam for building decoration materials, raw appearance and high performance requirements of the product, together with impurities or mixed with other plastics recycling particles due to poor mechanical properties, which can only be used for the production of low-grade molded products.



As market competition intensifies, more and more companies are not satisfied with a simple low recovery granulation. Adding various additives in the foam recycling process to impart new properties of materials, thereby increasing the added value of PS recycled materials to achieve high-quality regeneration.



PS foam particles recovered after the impact of a lower melt strength, greatly limiting its scope. PS particles can be recovered toughening modified to expand its range of applications. The main process of the PS foam recycling or recovery process after adding granulated SBR, SBS, SEBS, SIS or through graft and other materials treated polyolefin modified by a twin-screw unit carried out modification. PS recovered particles increase the impact strength.



PS recycling particles can also be based on the specific requirements of the product, adding a variety of additives blended modified to impart new material properties, thereby expanding its scope of use. As some chemical was added, which could enhance the recovery of the PS antioxidant particles capacity. At the same time, various additives can also be used together to impart a number of new product performance.



With the progress of PS recovery technology in 2010 and the development of recycling, PS foam disposable tableware from backward and elimination directory and should be removed from exposure draft. And PS recycling has shown signs of success. In the same year of June, INTCO Recycling was awarded for the “China Plastics recycling of R&D base,” marks the PS recycling industry to high-tech, intensive recycling has taken a new step. With the gradual depletion of the earth’s resources and people’s awareness of environmental protection, non-renewable resources recycling has become a trend, and PS foam recovery levels will be further strengthened.