Preparation method of regenerative polyester bottle tablet for producing textile filament raw material

Abstract

The invention relates to a preparation method of a regenerative polyester bottle tablet for producing a textile filament raw material, belonging to the technical field of the processing of the raw spinning materials. The preparation method comprises the steps of: preparing raw materials, separating, removing labels, shearing, smashing once, evaporating, washing, dehydrating for drying, smashing for the second time and sieving. The technical scheme provided by the invention can ensure that the regenerative polyester bottle tablet has the impurity content decreased from 2 percent to less than 0.02 percent without containing polyester powder, thereby end breakage as well as ossified filaments and yarn variation of textiles can be avoided during spinning; and moreover, the process is short with less raw materials consumption, which is beneficial to saving energy source and materials resources.

Description

technical field [0001] The invention belongs to the technical field of processing textile raw materials, in particular to a method for preparing recycled polyester bottle flakes used for producing textile filament raw materials. Background technique [0002] The recycled polyester bottle flakes are processed and reused as raw materials for textile filaments, which can not only save resources, but also reflect environmental protection. At present, there are two main physical recycling methods for discarded polyester bottles: one is to break the polyester bottles into fragments, and remove polyethylene, metals such as aluminum, paper such as labels and adhesives, and then recycle the fragments Washing, drying and granulation to obtain raw materials for the production of textile filaments; the second is to first separate the non-polyester bottle caps and labels on the polyester bottle by mechanical means, and then wash, crush and manufacture the polyester bottle pellets to obt...

AI Technical Summary

Problems solved by technology

[0006] It can be seen from the above that in the published patent literature, there is no introduction of the technical content of the system for the preparation method of the recycled polyester bottle flakes for the production of textile filament raw materials, so it is necessary to further explore the processing. The applicant believes that, except in Avoiding broken ends during the spinning process and preventing the fabric from being stiff and crossed, shortening the entire process flow, avoiding raw material loss and simple process are also important factors that cannot be ignored in the preparation of recycled polyacid bottle flakes.