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消费后PET瓶子的回收再利用一般用于纺织品(或服装)、地毯、薄膜以及注塑制品。相对于其他级别的PET,瓶级PET质量较高,并具有较好的性能。为生产高性能的PET产品,恢复这种等级很重要。PET瓶片的等级可以通过固相聚合(SSP)进一步提高。SSP工艺能增加瓶片的聚合度[以特性黏度(IV表示],去除几种污染物,提高回收再利用PET的性能。通过SSP装置加工后的回收再利用PET瓶片能转化成高质量的工业和结构材料,以及要求IV比普通更高的PET瓶子。在此,介绍一种独特的连续工艺,它能效好,并适合集成于大型回收装置。
Post consumer PET bottles are typically recycled for textiles (or garments), carpets, films, and injection molded products. Compared with other grades of PET, PET bottles of higher quality, and has better performance. For the production of high-performance PET products, to restore this level is very important. The grade of PET flake can be further enhanced by solid state polymerization (SSP). The SSP process increases the degree of polymerization of the flake. [Intrinsic Viscosity (IV)] removes several contaminants and improves the performance of recycled PET PET flakes processed by SSP can be converted into high quality Industrial and structural materials, and PET bottles requiring a higher IV than normal. Here, a unique continuous process is introduced that works well and is suitable for integration into large recovery units.