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Sheath-core structure composite fiber and nonwoven fabric containing the same

A skin-core structure and composite fiber technology, applied in the field of non-woven fabrics, can solve the problems of good permeability of the diversion layer, many layers, and complicated methods, so as to improve the permeability and anti-rewet performance, and reduce the amount of rewet , Improve the effect of permeability

Active Publication Date: 2022-07-08
TIANJIN POLYTECHNIC UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method described in this patent is complex and has many layers, which is difficult to realize in practice, and the permeability of the diversion layer may not be good

Method used

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  • Sheath-core structure composite fiber and nonwoven fabric containing the same
  • Sheath-core structure composite fiber and nonwoven fabric containing the same
  • Sheath-core structure composite fiber and nonwoven fabric containing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of skin-core structure composite fiber: 30tw% of the skin layer material and 70tw% of the core layer material were spun in a bi-component composite spinning machine, and then stretched in a flat drawing machine to obtain a fiber length of 38mm and an average of 38mm. The fiber fineness is 3D skin-core structure composite fiber.

[0038] The material of the skin layer is polyethylene fiber, the melting point of the polyethylene fiber is 130°C, and the dry heat shrinkage rate at 130°C is 2.0%.

[0039] The core layer material includes high-shrinkage polyester fiber, the high-shrinkage polyester fiber has a melting point of 160° C. and a dry heat shrinkage rate of 25% at 180° C.

[0040] Preparation of non-woven fabric: The composite fiber of skin-core structure is opened, mixed, carded and laid, and the weight is 40g / m2. 2 The fiber web; the fiber web first enters a hot air oven with a temperature of 135 ° C and stays for 4 minutes, then is output from the ho...

Embodiment 2

[0042] Preparation of skin-core structure composite fiber: 30tw% of the skin layer material and 70tw% of the core layer material were spun in a bi-component composite spinning machine, and then stretched in a flat drawing machine to obtain a fiber length of 38mm and an average of 38mm. The fiber fineness is 3D skin-core structure composite fiber.

[0043] The skin layer material includes polyethylene fibers, the melting point of the polyethylene fibers is 120°C, and the dry heat shrinkage rate at 130°C is 2.5%.

[0044] The core layer material includes high-shrinkage polyester fiber, the high-shrinkage polyester fiber has a melting point of 160°C and a dry heat shrinkage rate of 20% at 180°C.

[0045] Preparation of non-woven fabric: The composite fiber of skin-core structure is opened, mixed, carded and laid, and the weight is 30g / m2. 2 The fiber web; the fiber web first enters a hot air oven with a temperature of 125 ° C and stays for 3 minutes, then is output from the hot ...

Embodiment 3

[0047] Preparation of skin-core structure composite fiber: 40tw% of the skin layer material and 60tw% of the core layer material were spun in a bi-component composite spinning machine, and then stretched in a flat drawing machine to obtain a fiber length of 38mm and an average of 38mm. The fiber fineness is 3D skin-core structure composite fiber.

[0048] The skin layer material includes polyethylene fibers, the melting point of the polyethylene fibers is 130° C., and the dry heat shrinkage rate at 130° C. is 2.5%.

[0049] The core layer material includes high shrinkage polyester fiber, the high shrinkage polyester fiber has a melting point of 260° C. and a dry heat shrinkage rate of 25% at 180° C.

[0050] Preparation of non-woven fabric: The composite fiber of skin-core structure is opened, mixed, carded and laid, and the weight is 20g / m2. 2The fiber web; the fiber web first enters a hot air oven with a temperature of 135 ° C and stays for 5 minutes, then is output from th...

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Abstract

The invention relates to a sheath-core structure composite fiber and a non-woven fabric containing the sheath-core structure composite fiber. The sheath-core structure composite fiber comprises a skin layer of 30-40tw% and a core layer of 70-60tw%, and the skin layer is composed of a poly The skin layer material of vinyl fiber is prepared, the melting point of the polyethylene fiber is 120-130 ° C, the core layer is prepared from the core layer material including high shrinkage polyester fiber, and the melting point of the high shrinkage polyester fiber is It is 160~260 ℃. The non-woven fabric is made of the above-mentioned composite fibers of the skin-core structure through opening, mixing, carding, laying, and hot air bonding. The surface of the skin-core composite fiber provided by the present invention has a similar "large intestine" fold structure, which is beneficial to improve the permeability and anti-rewet property of the non-woven fabric provided by the present invention as a guide layer material.

Description

technical field [0001] The present invention relates to the technical field of hot air non-woven materials, more particularly, it relates to a composite fiber with a sheath-core structure and a non-woven fabric containing the composite fiber with a sheath-core structure. Background technique [0002] In the field of disposable hygiene products, the diversion layer is a layer of non-woven material placed between the surface layer and the core layer. Its function is to help the liquid to penetrate down from the surface layer quickly, and to disperse the liquid evenly longitudinally to transmit And sent to the absorbent core layer, so that the absorbent core layer can effectively absorb liquid, effectively prevent reverse osmosis, so as to keep the surface layer dry and comfortable. [0003] At present, the air-conducting layer commonly used in the market is a hot-air non-woven material made of single-layer PE / PP or PE / PET and other two-component thermal bonding fibers by hot-a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/06D01F8/14D04H1/4382D04H1/541D01D5/34
CPCD01F8/06D01F8/14D04H1/4382D04H1/541D01D5/34
Inventor 钱晓明孙武平李成群钱幺
Owner TIANJIN POLYTECHNIC UNIV
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