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7d porous hollow fiber and its preparation method and application

A hollow and fiber technology, applied in the field of polyester staple fibers, can solve the problems of fiber performance that cannot meet the needs of the industry, poor crimp rate, etc., and achieves the effect of improving the clustering, increasing the crimping potential energy, and uniform thickness.

Active Publication Date: 2020-05-08
广东秋盛资源股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a 7D porous hollow fiber and its preparation method, which aims to solve the problems of the existing hollow short fiber, such as the number of crimps and the crimp rate, which cause the fiber performance to fail to meet the needs of the industry.

Method used

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  • 7d porous hollow fiber and its preparation method and application
  • 7d porous hollow fiber and its preparation method and application
  • 7d porous hollow fiber and its preparation method and application

Examples

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preparation example Construction

[0033] The present invention provides a kind of preparation method of 7D porous hollow fiber, and this preparation method comprises the following steps:

[0034] Step S01. Melting and extruding the spinning raw material to obtain a melt with a viscosity of 0.70dl / g-0.78dl / g;

[0035] Step S02. The melt is sprayed from the spinneret hole of the 4-hole hollow spinneret to obtain the primary fiber, and the primary fiber is cooled by the circular air blowing cooling method, and the height of the cooling point during cooling is 6.5cm ~7.5cm, water mist with a particle size of ≤100μm is passed into the cooling air pipe during cooling of the surrounding air, the temperature of the surrounding air is 22°C-24°C, and the temperature of the fiber on the windward side is lower than that on the leeward side by 3°C-4 ℃, the relative humidity of the surrounding air is 90±10%, and the wind speed is (7.0~8.0)m / s;

[0036]Step S03. Winding, bundling, water-bath drawing and steam drawing the as...

Embodiment 1～26

[0057] In order to save space, the parameters involved in the preparation methods of Examples 1 to 26 are listed in Table 1. The specific preparation process is prepared according to the instructions in the manual. The raw material is recycled polyester bottle flakes, and the viscosity of the melt is 0.70dl / g~0.78dl / g.

[0058] Table 1 Examples 1-26 preparation process parameters (water mist particle size ≤ 100 μm)

[0059]

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Abstract

The invention provides a 7D porous hollow fiber and a preparation method and application thereof. The preparation method comprises the following steps that: a melt body with the viscosity of 0.70-0.78dl / g is sprayed through spinneret orifices of a four-hole hollow spinneret plate to obtain nascent fibers, cooling is carried out by means of ring blowing cooling at the height of a cooling point of6.5 to 7.5cm, a spray unit with the particle size less than or equal to 100 microns is led into a cooling air pipe at an ring blowing air temperature of 22 to 24 DEG C, wherein the temperature of thewindward side of the fiber is lower than the temperature of the leeside by 3 to 4 DEG C, the relative humidity of the ring blowing air is 90+ / -10%, and the wind speed is(7.0 to 8.0)m / s; the cooled nascent fibers are wound, the wound fibers are bundle, water-bath drafting is carried out on the bundled fibers, and steam drafting is carried out on the fibers after water-bath drafting; and then fibersafter steam drafting is curled. The prepared porous hollow fiber has advantages of high bulkiness, high resilience, large cripation number, high crimp ratio and good thermal-insulation performance and is suitable for the field of household textiles.

Description

technical field [0001] The invention belongs to the technical field of polyester staple fibers, and in particular relates to a 7D porous hollow fiber and its preparation method and application. Background technique [0002] Textiles are a necessity in people's lives. With the development of the times, they have developed into three types: home textiles, clothing textiles, and industrial textiles. Among them, home textiles mainly include bedding, fabric, embroidery, towels, flocking, blankets and so on. The porous hollow three-dimensional curly fiber has many advantages such as high hollowness, good bulkiness, excellent resilience, stronger warmth retention, smooth hand feeling, and permanent curling. It is an excellent choice for home textile products such as pillow cores, soft toys, cushions, etc. The wadding material can also be used for decorative cloths, carpets, wool-like products, filter materials, etc. The product has high added value and a good market. [0003] Hol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/08D01D5/092D01D5/22D01D5/24D01D5/247
CPCD01D5/08D01D5/092D01D5/22D01D5/24D01D5/247
Inventor 马俊滨陈华升张开友秦永刚谢志平
Owner 广东秋盛资源股份有限公司
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