Method for industrial production of polyester filament yarn by using polyester waste yarn

A polyester filament and waste filament technology, which is applied in the field of polyester filament production and processing, can solve the problems of poor performance of polyester POY filament, achieve process stability, improve utilization rate, and realize the effect of economic cycle

Inactive Publication Date: 2015-09-16
LONGFU RECYCLING ENERGY SCIENTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method utilizes waste silk, the performance of the polyester POY filament obtained is not good

Method used

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  • Method for industrial production of polyester filament yarn by using polyester waste yarn

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1, the method of utilizing polyester waste silk industrial production specification 111dt / 124f polyester FDY filament

[0029] (1) Preparation of foam material: Wash and dry the waste silk, cut off the fibers with a length of 8-12mm, use the foam material manufacturing machine to generate heat through mechanical friction to soften and bond the fibers into large granules, Then it is poured into water, and it bursts into small particles to obtain small particles, which is the foam material; the foam material is granular and irregular in shape, with a viscosity of 0.625dl / g, a melting point of 249.8°C, and an external moisture content of 3.0%. , bulk density is 450kg / m 3 .

[0030] (2) Crystallization: Put the foam material obtained in step (1) into the crystallization bed through a rotary valve, and keep boiling. The thickness of the crystallization bed material layer is 20cm, the crystallization time is 60min, and the crystallization temperature is 170°C;

...

Embodiment 2

[0036] Embodiment 2, the method for utilizing polyester waste silk industrial production specification 538dt / 124f polyester POY filament

[0037] (1) Preparation of foam material: Wash and dry the waste silk, cut off the fibers with a length of 8-12mm, use the foam material manufacturing machine to generate heat through mechanical friction to soften and bond the fibers into large granules, Then it is poured into water, and it bursts into small particles to obtain small particles, which is the foam material; the foam material is granular and irregular in shape, with a viscosity of 0.628dl / g, a melting point of 250.0°C, and an external moisture content of 4.0%. , bulk density is 448kg / m 3 .

[0038] (2) Crystallization: Put the foam material prepared in step (1) into the crystallization bed through a rotary valve, and keep boiling. The thickness of the crystallization bed material layer is 15cm, the crystallization time is 50min, and the crystallization temperature is 175°C; ...

Embodiment 3

[0044] Embodiment 3, the method for utilizing polyester waste silk industrial production specification 538dt / 124f polyester POY filament

[0045] (1) Preparation of foam material: Wash and dry the waste silk, cut off the fibers with a length of 8-12mm, use the foam material manufacturing machine to generate heat through mechanical friction to soften and bond the fibers into large granules, Then it is poured into water, and it bursts into small particles to obtain small particles, which is the foam material; the foam material is granular and irregular in shape, with a viscosity of 0.623dl / g, a melting point of 249.6°C, and an external moisture content of 2.0%. , bulk density is 452kg / m 3 .

[0046] (2) Crystallization: Put the foam material prepared in step (1) into the crystallization bed through a rotary valve, and keep boiling. The thickness of the crystallization bed material layer is 18cm, the crystallization time is 55min, and the crystallization temperature is 165°C; ...

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Abstract

The invention belongs to the technical field of producing and processing of polyester filament yarns and particularly relates to a method for industrial production of polyester filament yarn by using polyester waste yarn. The method comprises the following specific operation steps: preparing a bubble material, crystallizing, drying and extruding; and preparing melt, filtering, homogenizing and spinning; and finally obtaining the polyester filament yarns. With the waste yarns generated in the process of recovering polyester bottle flakes to produce the polyester filament yarn as the raw material, the bubble material is produced from the waste yarns; the polyester filament yarns are industrially produced from the bubble material; cyclic utilization of the waste yarns is realized; the process disclosed by the invention is stable; the utilization rate of the recovered polyester bottle flakes is effectively improved; and the method can be popularized and applied.

Description

technical field [0001] The invention belongs to the technical field of production and processing of polyester filaments, and in particular relates to a method for industrially producing polyester filaments by utilizing waste polyester filaments. Background technique [0002] Polyester (PET) bottles (such as mineral water bottles, beverage bottles, cooking oil bottles, etc.) are almost non-biodegradable. In recent years, my country has accumulated a social stock of 25 million tons of polyester bottles, most of which are for one-time use. If they are not recycled, it will not only cause waste of resources, but also seriously pollute the environment. Although my country's recycled polyester fiber industry has a development history of more than 20 years, due to the irregularity of waste bottles, high impurities, and large differences in viscosity, the pressure of the machine head fluctuates greatly during the fiber production process, and the filtration performance is poor. Ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F13/04D01F6/92D01F1/10D01D1/04D01D1/10D01D5/08
CPCY02P70/62
Inventor 段建国雷景波冯希泉王景飞翟长群王耀村郭利
Owner LONGFU RECYCLING ENERGY SCIENTECH
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