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Whitened regenerated terylene staple fiber

A technology of polyester staple fiber and recycled polyester, applied in the field of polyester production, can solve the problems of affecting the whiteness of fibers, not enough to meet the requirements of fiber whiteness, and unable to achieve whitening, etc., and achieve high light reflectivity, bright color, and color soft effect

Inactive Publication Date: 2013-02-20
NINGBO DAFA CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with traditional regeneration spinning, the whitening regenerated polyester staple fiber produced by directly adding whitening agent is not enough to meet the requirements of high-end fiber products for fiber whiteness, even adding titanium dioxide still cannot achieve the purpose of whitening
Often, the whitening agent and titanium dioxide are directly added when the raw materials are directly dried, which leads to premature oxidation of the whitening agent and titanium dioxide, which affects the whiteness of the fiber, and there is dust in the feeding process, which causes waste of titanium dioxide and whitening agent and pollutes the environment. occur

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Embodiment [1-7] (preparation of masterbatch):

[0022] Take component A, component B, component C and polyester powder according to the required ratio and put them into a high-speed mixer for stirring and mixing, during which an appropriate amount of component D is added. Melt and granulate at ~225°C to obtain masterbatch products.

[0023] Table 1 Contained in the masterbatch: components and their contents

[0024] project Component A Component B Component C Component D A: B: C: D A+B+C+D mass content in masterbatch Example 1 OB-1+KSN Ti0 2 pigment Dispersant 5:42：0.003:3 50% Example 2 OB-1+KSN Ti0 2 pigment Dispersant 5:42：0.004:3 50% Example 3 OB-1+KSN Ti0 2 pigment Dispersant 5:42：0.005:3 50% Example 4 OB-1+KSN Ti0 2 pigment Dispersant 5:42：0.006:3 50% Example 5 OB-1+KSN Ti0 2 pigment Dispersant 3:44：0.003:3 50% Example 6 OB-1+KSN Ti0 2 pigment Dispers...

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PUM

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Abstract

The invention relates to the field of terylene production, and especially relates to whitened regenerated terylene staple fiber. The staple fiber is prepared through the steps that: a polyester masterbatch is mixed with regenerated polyester bottle chips; the obtained material is dried, and is subjected to melt spinning in a screw extruder, such that the staple fiber is obtained. The polyester masterbatch is prepared by melting granulation by using polyester powder and the following material components: a component A composed of a fluorescent whitening agent, a brightening agent and a heat stabilizer, a component B comprising polyester-fiber-use color-masterbatch-grade titanium dioxide, and a component C comprising a color enhancing agent. A weight ratio of the component A to the component B to the component C is (1-15%):(15-45%):(0.001-0.01%). The stable fiber provided by the invention has the advantages that: the finished fiber product has a porcelain-white and bright color, wherein the whiteness is higher than original polyester fiber.

Description

technical field [0001] The invention relates to the field of polyester production, in particular to a whitening type regenerated polyester staple fiber. Background technique [0002] At present, recycled polyester fiber has received strong support from various departments of the state and has developed rapidly due to its environmental protection, greenness, and obvious price competitive advantage (compared with virgin polyester fiber), and by 2011, the The production capacity has exceeded 7.5 million tons, most of which are white recycled polyester fibers produced from polyester bottle flakes, polyester packaging materials, and virgin polyester waste by simply adding fluorescent whitening agents. Because there is a large difference in whiteness between this kind of fiber and virgin polyester fiber, it cannot be used in fiber products as a single textile, non-woven and other raw materials in the high-end application field. The main reason is that there is still a big differe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/10
Inventor 钱军邢喜全王方河贾同伟杜芳
Owner NINGBO DAFA CHEM FIBER
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