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Heat-fusible composite fiber and uonwoven fabric using heat-fusible composite fiber

A composite fiber, thermal fusion technology, applied in non-woven fabrics, textiles and papermaking, conjugated synthetic polymer rayon, etc., can solve the problem of inability to obtain non-woven fabric processability or non-woven fabric physical properties, reduced fiber strength, Curl retention characteristics are reduced and other problems, and the generation of fiber breakage chips or the texture disorder of the web is suppressed, and the non-woven fabric has high strength and excellent stability.

Inactive Publication Date: 2018-07-31
ES FIBERVISIONS SUZHOU CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the fiber diameter of the heat-sealable composite fiber becomes thinner, the strength of each fiber decreases, and the crimp retention property to ensure the processability of the nonwoven fabric or the bulkiness of the nonwoven fabric also decreases, so that satisfactory results cannot be obtained. Problems with the processability of non-woven fabrics or the physical properties of non-woven fabrics

Method used

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  • Heat-fusible composite fiber and uonwoven fabric using heat-fusible composite fiber

Examples

Experimental program
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Effect test

Embodiment 1

[0072] Use polyethylene terephthalate (melting point 250°C) with an intrinsic viscosity (Intrinisic Viscosity, IV) value of 0.64 as the first component, and use a high Density polyethylene (melting point 130°C) was used as the second component.

[0073] The first component which is a high-melting point component is distributed to the core, and the second component which is a low-melting point component is distributed to the sheath, and the cross-sectional form of the sheath / core=50 / 50 is compounded, and the spinning speed is 900m / min. The condition set takes 15.0 dtex of unstretched silk. The obtained undrawn yarn was stretched 2.5 times at 110° C. with a hot roll stretching machine, and then stretched 3.0 times at 80° C. to obtain a heat-sealable conjugate fiber of 2.0 dtex. The breaking strength of the heat-sealable composite fiber is 2.58cN / dtex, the breaking elongation is 134%, the breaking strength / breaking elongation is 0.019, and the breaking work is 2.48cN·cm / dtex, wh...

Embodiment 2

[0076] Use polyethylene terephthalate (melting point 250°C) with an IV value of 0.64 as the first component, and high-density polyethylene (melting point 130°C) with a melt index measured at 190°C as 16g / 10min as the second component. Element.

[0077] The first component which is a high-melting point component is distributed to the core, and the second component which is a low-melting point component is distributed to the sheath, and composited in a cross-sectional form of sheath / core=60 / 40, and the spinning speed is 900m / min. The condition set takes 15.0 dtex of unstretched silk. The obtained undrawn yarn was stretched 3.0 times at 120° C. with a hot roll stretching machine, and then stretched 2.0 times at 70° C. to obtain a heat-sealable conjugate fiber of 2.5 dtex. The breaking strength of the heat-sealable composite fiber is 2.84cN / dtex, the breaking elongation is 130%, the breaking strength / breaking elongation is 0.022, and the breaking work is 2.69cN cm / dtex, which has...

Embodiment 3

[0080] Using polyethylene terephthalate (melting point 250°C) with an IV value of 0.64 as the first component, and linear low-density polyethylene (melting point 125°C) with a melt index measured at 190°C of 16g / 10min as the second ingredient.

[0081] The first component which is a high melting point component is distributed to the core, and the second component which is a low melting point component is distributed to the sheath, and composited in a cross-sectional form of sheath / core = 50 / 50, and the spinning speed is 700m / min. The condition set takes 10.0 dtex of unstretched silk. The obtained undrawn yarn was stretched 2.0 times at 120° C. with a hot roll stretching machine, and then stretched 3.0 times at 70° C. to obtain a heat-sealable conjugate fiber of 1.7 dtex. The breaking strength of the heat-sealable composite fiber is 2.45cN / dtex, the breaking elongation is 129%, the breaking strength / breaking elongation is 0.019, and the breaking work is 2.23cN·cm / dtex, which h...

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Abstract

The present invention provides a heat-fusible composite fiber and uonwoven fabric using heat-fusible composite fiber. The eat-fusible composite fiber comprises a first constituent comprising polyesterresin and a second constituent comprising polyolefin resin, the melting point of the second constituent is at least 10 DEG C lower than the melting point of the first constituent, the fracture obtained by a tensile test is above 1.6cN.cm / dtex. The heat-fusible composite fiber is employed to inhibit the damaging of fibers to obtain good and high-quality uonwoven fabric compared to the prior art.

Description

technical field [0001] The present invention relates to a heat-sealable composite fiber and a nonwoven fabric obtained by using the composite fiber. Background technique [0002] Heat-sealable composite fibers that can be bonded between fibers by heat-welding using heat energy such as hot air or heating rolls can easily obtain non-woven fabrics excellent in bulkiness or softness, which are widely used in diapers, sanitary napkins (napkins, etc.) ), sanitary materials such as pads, or industrial materials such as simple wipers, filters, and separators. [0003] Recently, heat-sealable nonwoven fabrics containing heat-sealable conjugate fibers have been demanded to be supplied at lower prices and with higher quality in order to expand their use. Furthermore, especially in hygienic material applications or filter applications, it is desirable to include finer heat-sealable conjugate fibers in order to improve the softness and filter characteristics. However, if the fiber diam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01F8/06D04H1/541D04H1/542
CPCD01F8/14D01F8/06D04H1/541D04H1/542
Inventor 宫内実海野真一
Owner ES FIBERVISIONS SUZHOU CO LTD