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Modified cross-section fiber

Inactive Publication Date: 2017-01-26
FIBERVISIONS LP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is a modified cross-section fiber that has excellent glossiness and concealing properties of a fiber, as well as excellent moisture discharge properties. This fiber can be efficiently produced by splitting a fine conjugate fiber. Additionally, using a conjugate fiber derived from the split modified cross-section fiber can result in a nonwoven fabric with high strength.

Problems solved by technology

However, in both PTLs 1 and 2, the fibers after being split have a monocomponent, thermally bonded points during forming a nonwoven fabric decrease, and strength of the nonwoven fabric has been far from sufficient.

Method used

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  • Modified cross-section fiber
  • Modified cross-section fiber
  • Modified cross-section fiber

Examples

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example 1

(Production of Modified Cross-Section Fiber)

[0080]The first thermoplastic resin (PP), the second thermoplastic resin (PE) and the third thermoplastic resin (PP) were used to spin a modified cross-section fiber shown in FIG. 1(f) through a spinneret for the modified cross-section fiber at 50 / 50 in a volume ratio of (the first thermoplastic resin and the third thermoplastic resin) to the second thermoplastic resin. The modified cross-section fiber having a fineness of 9.5 dtex and having a cross-sectional shape shown in FIG. 2 was obtained.

[0081]On the occasion, as a surfactant, a fiber treating agent containing an alkyl phosphate K salt as a main component was brought into contact with a spun fiber using an oiling roll, and was deposited onto the fiber.

[0082]The resultant unstretched fiber was stretched 6 times using a stretching machine by setting a stretching temperature at 90° C., and the fiber was cut using a cutter into a short fiber.

[0083]As shown in FIG. 3, in the fiber after ...

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PUM

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Abstract

In particular, an object is to show a modified cross-section fiber that is split and used and thus can efficiently produce a fine conjugate fiber. The present disclosure relates to a modified cross-section fiber comprising: (1) a plurality of pieces of conjugate fiber structures comprising a first thermoplastic resin and a second thermoplastic resin having a lower melting or softening point than the first thermoplastic resin and (2) a connected body comprising a third thermoplastic resin having a higher melting or softening point than the second thermoplastic resin, wherein, in an arbitrary fiber cross-section, at least two pieces of the conjugated fiber structure are connected by the connected body.

Description

TECHNICAL FIELD[0001]The present invention relates to a specific modified cross-section fiber. More specifically, the invention relates to a modified cross-section fiber that is excellent in splittability, and after being split, fine conjugate fiber structures thereof can be individually and independently derived as a fine conjugate fiber structure.BACKGROUND ART[0002]Study has been so far conducted on various splittable conjugate fibers. For example, PTL 1 proposes that splittability is improved by using as one component of a polyolefin-based resin a resin containing 1 to 30% by weight of ethylene-vinyl alcohol copolymer having a degree of saponification of 95% or more in a splittable conjugate fiber formed of the polyolefin-based resin. PTL 2 proposes that a thermoplastic resin containing two components having different thermal shrinkage is used to easily split the resin by utilizing a difference in the thermal shrinkage during heat treatment. However, in both PTLs 1 and 2, the fi...

Claims

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Application Information

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IPC IPC(8): D01D5/253D01F8/04D01D5/30
CPCD01D5/253D01F8/04D01D5/30
Inventor KUBOTA, HITOSHI
Owner FIBERVISIONS LP
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