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A novel highly fluffy down-like composite filling fiber and its preparation method

A technology of filling fiber and imitating down, which is applied in fiber processing, filament/thread forming, conjugated synthetic polymer artificial filament, etc. It can solve the problems of difficult elasticity, high production cost, and small number of holes in the hollow spinneret, etc. problem, to achieve the effect of high strength, good elasticity and soft hand feeling

Active Publication Date: 2020-06-16
福建省海兴凯晟科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small number of holes in the hollow spinneret, the output is low and the production cost is high
[0003] At present, there are elastic fiber (T-400 fiber) products developed by PET / PTT composite pre-oriented yarn in the market, but because the elasticity of PET / PTT composite fiber is difficult to reflect before stretching and heat setting, it is developed by this route Composite elastic fiber, it is difficult to reflect the characteristics of PET / PTT composite fiber, and it is difficult to fully exert the elasticity and bulkiness

Method used

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  • A novel highly fluffy down-like composite filling fiber and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Production of 2.2dtex×88mm filling fibers:

[0018] Firstly, 8.5dtex composite precursor D is prepared, the cross-section is side by side, the moisture content range is 26.5%, the denier range is 8.5±0.2dtex, and the elongation at break range is 465-495%. Post-drawing treatment of raw silk D: raw silk D is treated with atomization and oiling 15 before drafting III16 after being bundled 11, splitting grate and splitting 12, guide wire 13, oil bath, drafting I&II14, Raw silk D is solidified by low-temperature homogenizing oil agent after drafting III16 rollers, and the treated raw silk D is heated in a steam heating box for 17, and then oiled on both sides of the raw silk D on the oiling device before tension heat setting 19 18 treatment, the raw silk D after oiling on both sides 18 is subjected to tension heat setting 19 steam heating oil agent curing and raw silk D orientation heating and setting, the raw silk D after orientation setting and oil curing is con...

Embodiment 2

[0020] Example 2: Production of 3.6dtex×30mm filled fibers:

[0021] Firstly, 12.5dtex composite precursor D is prepared, with side-by-side cross-section, moisture content range of 27.5%, denier range of 12.5±0.1dtex, and elongation at break range of 485-585%. Post-drawing treatment of raw silk D: raw silk D is treated with atomization and oiling 15 before drafting III16 after being bundled 11, splitting grate and splitting 12, guide wire 13, oil bath, drafting I&II14, Raw silk D is solidified by low-temperature homogenizing oil agent after drafting III16 rollers, and the treated raw silk D is heated in a steam heating box for 17, and then oiled on both sides of the raw silk D on the oiling device before tension heat setting 19 18 treatment, the raw silk D after oiling on both sides 18 is subjected to tension heat setting 19 steam heating oil agent curing and raw silk D orientation heating and setting, the raw silk D after orientation setting and oil curing is controlled by te...

Embodiment 3

[0023] Embodiment 3: Production of 6.6dtex×65mm filling fiber:

[0024] Firstly, 20.5dtex composite precursors are prepared, with side-by-side cross-section, moisture content range of 25.5%, denier range of 20.5±0.5dtex, and elongation at break range of 555-685%. Post-drawing treatment of raw silk D: raw silk D is treated with atomization and oiling 15 before drafting III16 after being bundled 11, splitting grate and splitting 12, guide wire 13, oil bath, drafting I&II14, Raw silk D is solidified by low-temperature homogenizing oil agent after drafting III16 rollers, and the treated raw silk D is heated in a steam heating box for 17, and then oiled on both sides of the raw silk D on the oiling device before tension heat setting 19 18 treatment, the raw silk D after oiling on both sides 18 is subjected to tension heat setting 19 steam heating oil agent curing and raw silk D orientation heating and setting, the raw silk D after orientation setting and oil curing is controlled by...

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Abstract

The invention relates to highly fluffy novel down-like composite filling fibers and a preparation method thereof. The composite filling fibers contain the following raw materials in percentages by weight: 30-70% of dacron (PET) and 70-30% of polypropylene terephthalate (PTT). The preparation method comprises the following steps: separately performing crystallizing and drying, fusing and squeezing and spinning by a spinning box body on the two raw materials; feeding the mixture into a high-capacity double-channel composite spinning device to compound silk flocks with parallel cross sections; performing spinning, outer ring blowing cooling, central oiling and coiling process on the silk flocks to prepare a composite filling fiber raw silk fall barrel; balancing raw silk for 8-20h, and then performing concentration of beams, division by a dividing grate, silk guiding by a silk guider, traction I and II, atomizing and oiling, traction III, heating by a steam heating box, double-sided oiling, tensioning thermal forming, tension control, cooling and oiling, traction in multiple sections, steam atomizing and dragging and cutting on the raw silk to obtain the highly fluffy composite filling fibers and packaging a finished product.

Description

technical field [0001] The invention relates to a fiber preparation method, in particular to a novel highly fluffy down-like composite filling fiber and a preparation method thereof, belonging to the technical field of chemical fiber engineering. Background technique [0002] At present, there are mainly two production methods for filling fibers on the market, one is the production method of ultrafine denier fibers, and the other is the production method of hollow fibers. Ultra-fine fiber production methods usually adopt methods such as ultra-drawing method, composite spinning stripping method, sea-island method, high-speed spinning ultra-fine fiber method, jet spinning, etc. Thin, easy to cause overpressure, resulting in unstable product quality; there are two main production methods for hollow fibers, one is the chemical method, that is, chemical reagents are added during production and removed in post-processing after fiber molding to form hollow fibers , one is the phys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/32D01F8/14
CPCD01D5/32D01F8/14
Inventor 欧阳文咸冯永生刘洪彦
Owner 福建省海兴凯晟科技有限公司