PET bottle flake regeneration functional fiber production technology

A technology of functional fiber and production process, applied in the field of production process of PET bottle flakes regenerated functional fiber, can solve the problems of uneven product quality, energy waste, difficulty in grasping various indicators, etc.

Inactive Publication Date: 2016-03-16
HEBEI JIUCHUANG CHEM FIBER MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Recycling recycled fiber from PET bottle flakes has become a relatively common recycling method for PET bottles in the market; however, it is difficult to grasp the various indicators of PET in the process of recycling fiber, so that the entire recycling process is a waste of energy, and the product quality is uneven. uneven phenomenon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The production process of PET bottle flake recycled functional fiber, its production steps are as follows:

[0027] a). Firstly, pre-treat the PET bottle, remove the label, and then crush the waste PET bottle into a size of ≦30 PET bottle flakes; the broken bottle flakes are subjected to alkali washing; the alkali washing temperature is 90~95°C; after alkali washing, the non-PET bottle caps are removed by floating and sinking method;

[0028] b). Dry the PET bottle flakes obtained in step a by means of centrifugal negative pressure, so that the water content is 120-135ppm, and obtain PET low-viscosity primary material;

[0029] c). Increase the viscosity of the low-viscosity PET raw material obtained in step b, and increase the viscosity of the low-viscosity PET raw material obtained in step b at 180°C to make the viscosity reach 1.2~1.5ppm to obtain a high-viscosity PET raw material ; PET high-viscosity initial material and PET low-viscosity initial material are mixed...

Embodiment 2

[0038] a) First, pre-treat the PET bottle, remove the label from the PET bottle, and then crush the waste PET bottle into ≦30 PET bottle flakes; the broken bottle flakes are subjected to alkali washing; the alkali washing temperature is 90~95°C; after alkali washing, the non-PET bottle caps are removed by floating and sinking method;

[0039] b). Dry the PET bottle flakes obtained in step a by means of centrifugal negative pressure, so that the water content is 120-135ppm, and obtain PET low-viscosity primary material;

[0040] c). Thickening the PET low-viscosity primary material obtained in step b, and increasing the viscosity of the PET low-viscosity primary material obtained in b-step at 180°C to make the viscosity reach 1.2~1.5ppm to obtain a high-viscosity primary material; Mix the high-viscosity primary material and the low-viscosity primary material to obtain the target viscosity PET material; the mass parts of the high-viscosity primary material and the low-viscosity ...

Embodiment 3

[0049] a) First, pre-treat the PET bottle, remove the label from the PET bottle, and then crush the waste PET bottle into ≦30 PET bottle flakes; the broken bottle flakes are subjected to alkali washing; the alkali washing temperature is 90~95°C; after alkali washing, the non-PET bottle caps are removed by floating and sinking method;

[0050] b). Dry the PET bottle flakes obtained in step a by means of centrifugal negative pressure, so that the water content is 120-135ppm, and obtain PET low-viscosity primary material;

[0051] c). Thickening the PET low-viscosity primary material obtained in step b, and increasing the viscosity of the PET low-viscosity primary material obtained in b-step at 180°C to make the viscosity reach 1.2~1.5ppm to obtain a high-viscosity primary material; Mix the high-viscosity primary material and the low-viscosity primary material to obtain the target viscosity PET material; the mass parts of the high-viscosity primary material and the low-viscosity ...

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PUM

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Abstract

The present invention relates to a PET bottle flake regeneration functional fiber production technology, comprising the following steps: bottle flake screening and pre-treatment, adding of a far-infrared masterbatch and an antibacterial agent, melt spinning, forming, drawing and oil applying, curling, heat setting, cutting and package; through controlling of technical parameters of all reaction steps, the purpose of improvement of product quality can be achieved, in the pre-treatment step, bottle flake effective tackifying can be performed, the production process consistency of tackified bottle flakes is stronger, in downstream textile and garment manufacturing, garments are more comfortable to wear, and more obvious in warming characteristics; after the tackifying, in the next procedure production, raw material melting temperature is reduced, extrusion screw current is correspondingly reduced, and production cost is reduced.

Description

technical field [0001] The invention relates to the field of recycling PET bottles, in particular to a production process of recycled functional fibers from PET bottle flakes. Background technique [0002] PET (polyethylene terephthalate) material has strong applicability and is widely used in daily necessities, daily chemical packaging and other fields. In my country, with the rapid development of the economy, PET (polyethylene terephthalate) is widely used to make various packaging bottles, and hundreds of thousands of tons of discarded PET bottles are produced in my country every year. How to rationally utilize discarded PET bottles to achieve the purpose of energy saving and environmental protection has become a common concern of the whole society. Recycling recycled fiber from PET bottle flakes has become a relatively common PET bottle recycling method in the market; however, in the process of recycling fiber, it is difficult to grasp the various indicators of PET, so ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/10D01D5/08
CPCD01F6/92D01D5/08D01F1/10D01F1/103
Inventor 王志军石良军高战旭陈现卜宋勇
Owner HEBEI JIUCHUANG CHEM FIBER MFG CO LTD
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