Method for recycling polyester waste silks

Abstract

The invention relates to a method for recycling polyester waste silks, which comprises the steps of: firstly, recovering waste silk generated in the process for producing polyester, and cleaning the recovered waste silks to remove oiling agents and impurities, then performing drying to remove moisture in the waste silk, and making the waste silk into globular bubble materials; secondly, putting the made bubble materials into a drying tower for secondary full drying; and finally, adding the bubble materials into a spinning screw rod continuously and metrically, and mixing the bubble materials with primary slices and masterbatch for melting spinning to prepare colored terylene POY filaments. The drying power for drying the bubble materials and a drying power of the primary slices are mutually independent, and the drying tower for drying the bubble materials is a special drying tower for the bubble materials. In the method for recycling the polyester waste silk, the waste silk is made into the bubble materials, so that the problem of different specific mass gravities of the waste silk and the primary slices is solved effectively, the consistent blanking speed and uniform mixing of the materials are ensured, produced products have the higher stability, and the colored terylene POY filaments which have the same wide application range as the primary slices can be manufactured.

Description

【Technical field】 [0001] The invention provides a method for recycling polyester waste silk, in particular a method for producing polyester colored POY filaments by adding a certain proportion of waste silk. 【Background technique】 [0002] With the rapid development of the polyester industry, polyester recycling is in the ascendant. Many developed countries and regions have issued corresponding laws and regulations to force the recycling of polyester waste, so as to encourage people to save energy and improve resource utilization, so that the entire economic activity can be ecological. ; Simplify, reuse, recycle and remanufacture resources and products. At present, domestic recycled polyester waste silk is mainly used for recycled polyester staple fiber after treatment, and its product use is mainly as filling material. There are also very few manufacturers for the production of POY filaments. The main method is to directly mix and add them during transportation. Due to the...

AI Technical Summary

Problems solved by technology

There are also very few manufacturers for the production of POY filaments. The main method is to directly mix and add them during transportation. Due to the difference in volume and proportion between the added waste silk and the original slices, the feeding speed is inconsistent, the mixing is uneven, and the production stability is poor. In severe cases, the production line will be shut down; at the same time, due to the different flow speeds, the drying effect will vary greatly, which will also have a great impact on product quality.

Therefore, it is difficult to realize the production of polyester POY filaments with polyester waste silk according to existing methods.

Images