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PET recycling manufacturers
9 décembre 2011

A process for washing and gravity sorting.Magic

A recycling machine method comprising: inputting information about a recycling machine. Preparing a first sorting condition for sorting the recycling item into one of a plurality of decomposing groups corresponding to conditions for decomposing the recycling item. Preparing a second sorting condition for sorting recycling parts obtained by decomposing the recycling item sorted out according to the first sorting condition, into at least one of a plurality of material groups corresponding to material of each of the recycling parts. Preparing a third sorting condition for sorting the recycling parts sorted out, into one of a plurality of processing groups corresponding to types of recycling processing to be carried out. And to respective fields where the recycling machine and the recycling parts are sorted.

 

A plastic recycling machinery from recyclable plastics. Sorting recyclable plastics into a first category and a second category . Shredding recyclable plastics in first category and second category . Characterizing the colour of shredded recyclable plastics in first category . Based on characterization, adding a calculated amount of shredded recyclable plastics from second category to adjust colour of shredded recyclable plastics in first category to a selected colour . And melting and extruding at least a portion of colour adjusted recyclable plastics in first category. An initial melt-polycondensation process in which a polycondensation reaction catalyst and a stabilizer are added to the PET oligomer . The mixture is subjected to a melt polycondensation reaction in a weak vacuum, and thus the degree of polymerization is increased. A latter term melt-polycondensation process in which the product of the previous process is further subjected to a melt polycondensation in a high vacuum to remove EG by distillation, and thus the degree of polymerization is further increased. And a solid phase polymerization process for further increasing the degree of polymerization in order to obtain a PET suitable for bottles.

 

PET bottle washing line characterized in that the wastes of resin bottles containing polyethylene terephthalate (PET) as the main component and further containing components different from it are passed sequentially through the following Processes: a process for unpacking a packed bale of PET bottles which have been recovered through collection of classified refuse. A process for removing iron and aluminum by a metal detector from the unpacked PET bottle washing line , and subsequently crushing the PET bottle washing line. A process for separating polymer components different from PET consisting of polyethylene, polystyrene, polyvinyl chloride from flaky pieces of PET bottles by winnowing . A process for washing and gravity sorting having both the roles of washing out foreign materials attached inside and outside the crushed PET bottle pieces with water, and further removing sands, stones having specific gravities larger than water and PET.

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