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Preparation method of environment-friendly composite fiber for hygienic materials

A composite fiber and environmental protection technology, applied in the field of sanitary fiber, can solve the problems of fiber and equipment, long air contact time, large equipment investment, long process route, etc.

Inactive Publication Date: 2021-09-07
东部湾(扬州)生物新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the long process route of the existing technology and large equipment investment; the long contact time between fibers and equipment and air increases the pollution degree of polylactic acid composite fibers, so it is necessary to have a low construction investment, low production energy consumption, and pollution-free production process. Preparation process of low-degree polylactic acid composite fiber for hygiene materials

Method used

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  • Preparation method of environment-friendly composite fiber for hygienic materials
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  • Preparation method of environment-friendly composite fiber for hygienic materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Raw material slices: polylactic acid (A) is polylactic acid with a melting point of 165°C, and polylactic acid (B) is polylactic acid with a melting point of 125°C; the moisture content of the raw material slices of polylactic acid (A) and polylactic acid (B) is about 30ppm, Polylactic acid (A) accounts for 45%wt of the total amount of raw materials.

[0029] 2. Process steps and their main parameters:

[0030] The raw material chips are prepared through the following process steps in sequence: composite melt spinning, primary oiling, drafting, secondary oiling, preheating, crimping, relaxation heat setting, cutting and packing.

[0031] The technological parameters of above-mentioned steps are as follows:

[0032]

[0033]

[0034] 3. Main product indicators of composite fiber:

[0035]

[0036] 4. Main energy consumption index of composite fiber:

[0037] This case is trial-manufactured on the company's 50t / d one-step production line. The main energy co...

Embodiment 2

[0039] 1. Raw material slices: polylactic acid (A) is polylactic acid with a melting point of 175°C, and polylactic acid (B) is polylactic acid with a melting point of 130°C; the moisture content of the raw material slices of polylactic acid (A) and polylactic acid (B) is both 30ppm About, component A accounts for 55%wt of raw material total amount.

[0040] 2. Process steps and their main parameters:

[0041] The raw material chips are prepared through the following process steps in sequence: composite melt spinning, primary oiling, drafting, secondary oiling, preheating, crimping, relaxation heat setting, cutting and packing. The technological parameters of above-mentioned steps are as follows:

[0042]

[0043]

[0044] 3. Main product indicators of composite fiber:

[0045]

[0046]

[0047] 4. Main energy consumption index of composite fiber:

[0048]This case is trial-manufactured on the company's 50t / d one-step production line. The main energy consumption...

Embodiment 3

[0050] 1. Raw material slices: polylactic acid (A) is polylactic acid with a melting point of 175°C, polylactic acid (B) is polylactic acid with a melting point of 128°C; the moisture content of polylactic acid (A) and polylactic acid (B) are both about 30ppm, and the combination Fraction A accounts for 50%wt of the total.

[0051] 2. Process steps and their main parameters:

[0052] The raw material chips are prepared through the following process steps in sequence: composite melt spinning, primary oiling, drafting, secondary oiling, preheating, crimping, relaxation heat setting, cutting and packaging. The technological parameters of above-mentioned steps are as follows:

[0053]

[0054]

[0055] 3. Main product indicators of composite fiber:

[0056]

[0057]

[0058] 4. Main energy consumption index of composite fiber:

[0059] This case is trial-manufactured on the company's 50t / d one-step production line. The main energy consumption indicators are as follo...

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Abstract

The invention relates to a preparation method of environment-friendly composite fiber for hygienic materials. The preparation method comprises the following steps of melt composite spinning, primary oiling, drafting, secondary oiling, preheating, crimping, loosening and setting, and cutting and packaging. The product related in the patent is renewable in source and is completely biodegradable after being discarded, so that the environmental protection problem of traditional petroleum-based hygienic materials is solved. In addition, the preparation method related in the patent is simple in process route, the production efficiency is improved, and the investment is reduced.

Description

technical field [0001] The invention relates to the field of sanitary fibers, in particular to a method for preparing composite polylactic acid fibers for sanitary materials. Background technique [0002] In the product scheme of the prior art, the hygienic fiber specifically refers to the ES fiber, and the ES fiber is a skin-core composite fiber produced from polypropylene and polyethylene. However, both polypropylene and polyethylene are petroleum-based non-degradable materials. Extensive use not only consumes petroleum, but also brings significant negative impacts on the environment, such as white pollution and global warming. [0003] Polylactic acid fiber (PLA) is a national strategic new fiber prepared from the lactic acid product produced by non-food crops or straw through biological fermentation through dehydration process and melt spinning process. Performance characteristics of PLA fiber: 1) The performance is similar to traditional petrochemical fibers and natura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/34D01D5/22D01D5/16D01D10/02D01F8/14
CPCD01D5/34D01D5/22D01D10/02D01D5/16D01F8/14
Inventor 杨家龙王秦峰王秀琴
Owner 东部湾(扬州)生物新材料有限公司
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