Fiber with modified cross section and fiber for artificial hair formed of the same

A special-shaped cross-section, fiber technology, applied in fiber processing, textiles and papermaking, single-component halogenated hydrocarbon rayon, etc., can solve the problems of reduced softness and bulkiness, and achieve excellent bulkiness and stable production. Effect

Active Publication Date: 2008-11-05
DENKA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, for a cross-sectional shape that is close to a circle, its softness increases, but its bulkiness decreases
Conversely, for a hollow or semi-hollow cross-sectional shape, its bulkiness increases, but its softness decreases

Method used

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  • Fiber with modified cross section and fiber for artificial hair formed of the same
  • Fiber with modified cross section and fiber for artificial hair formed of the same
  • Fiber with modified cross section and fiber for artificial hair formed of the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Through the following steps in sequence, the size (R) shown in Table 1 is obtained 1 and R 2 The unit of θ is μm, the unit of θ is degree), and the cross-sectional shape of the special-shaped cross-section fiber with a fineness of 67 dtex: (a) use a ribbon mixer to mix vinyl chloride resin (TH-1000 manufactured by Dayang Shibi Co., Ltd.) 100 by mass 3 parts by mass, hydrotalcite-based composite heat stabilizer (CP-410A manufactured by Nissan Chemical Industry Co., Ltd.) (the heat stabilizer component is 1.5 parts by mass), epoxidized soybean oil (O-130P manufactured by Asahi Denka Industry Co., Ltd.) 0.5 parts by mass, an ester lubricant (EW-100 manufactured by Riken Vitamin Co., Ltd. EW-100) and 0.8 parts by mass of a vinyl chloride resin composition are mixed; (b) using figure 1 The nozzle shape shown is "approximately C-shaped back close", and the nozzle cross-sectional area is 0.06mm 2 and a spinning die with 120 nozzle holes, melt-spinning the above-mentioned mix...

Embodiment 2～7

[0090] In Examples 2 to 7, except that the shape of the nozzle in the step (b) of Example 1 was changed to have the cross-sectional shape of the dimensions shown in Table 1, the rest was performed in the same manner as in Example 1 to obtain fibers with special-shaped cross-sections.

Embodiment 8

[0092] In addition to changing the nozzle shape of the (b) step of Example 1 to figure 2 Except for the "S shape" shown, the other operations were performed in the same manner as in Example 1 to obtain fibers with special-shaped cross-sections.

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Abstract

The invention provides a fiber with a modified cross section having excellent bulkiness, not fused, and manufacturable stably. In the fiber with the modified cross section, at least two hollow parts with openings that are open in the longitudinal axis of the fiber are formed in the cross section of the fiber. These two hollow parts are symmetrically formed with their backs facing each other, and the cross section of the fiber is formed in such a shape that generally C-shaped portions each curved arcuately are joined with their backs facing each other. Moreover, the shape of each generally C-shaped portion desirably fulfills the requirement of the following expressions: R1 is not smaller than 1.4R2 and not greater than 4.2R2, and theta is not smaller than 10 degrees and not greater than 160 degrees (in the expression, R1 is the maximum outer dimension passing through the center of a hollow part assumed inscribing circle, R2 is the diameter of the hollow part assumed inscribing circle, and theta is the angle formed by the center of the hollow part assumed inscribing circle and the two ends of each generally C-shaped portion).

Description

technical field [0001] The present invention relates to a fiber with a modified cross section, and in particular to a fiber with a modified cross section suitable for use as a fiber for artificial hair. Background technique [0002] So far, in order to impart bulkiness to fibers used in artificial hair for hair decoration such as wigs, hairpieces, braids, and extension hair, the cross-sectional shape of the fibers has been studied. Improve. For example, a method for producing a fiber having a protruding cross-section such as a trident-shaped Y-shaped cross-section (for example, refer to Patent Document 1), a method for producing a fiber with a C-shaped cross-section (for example, refer to Patent Document 2), and a fiber for forming a hollow cross-section have been proposed. The production method (for example, refer to Patent Document 3). In general, for a cross-sectional shape approaching a circle, its softness increases, but its bulkiness decreases. Conversely, for a hol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/48A41G3/00D01D5/253
CPCD01D5/253A41G3/0083D01F6/48
Inventor 堀端笃吉野善行根本光应
Owner DENKA CO LTD
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