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Sheets and methods for their manufacture

A manufacturing method and sheet technology, applied in the direction of conjugated synthetic polymer rayon, single-component synthetic polymer rayon, non-woven fabrics, etc., can solve the problems of single fiber fineness and lack of softness, etc. Achieves the effect of excellent bending resistance

Active Publication Date: 2020-03-06
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

), in this proposal, the single fiber fineness is 3.5 decitex and lacks softness

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0148]

[0149] (island ingredient polymer)

[0150] Polyethylene terephthalate (PET) having a melting point of 260° C. and an MFR of 46.5 was used.

[0151] (sea ingredient polymer)

[0152] Polystyrene (PSt) having a Vicat softening point of 100° C. and an MFR of 120 as measured in accordance with JIS K7206 was used.

[0153] (spinning and drawing)

[0154] Using the above-mentioned sea-component polymer and island-component polymer, a sea-island type composite nozzle with 16 islands and 4 inland sea components in each island, 16 islands / hole and 4 inland seas / island was used. The yarn end was melt spun under the conditions of a spinning temperature of 285° C. and a mass ratio of island component / inland sea component / sea component of 55 / 15 / 30.

[0155] Next, in a stretching liquid bath at a temperature of 85° C., two-stage stretching was carried out so that the total ratio became 3.0 times, crimping was applied using a stuffing box type crimper, and sea-island type comp...

Embodiment 2

[0164]

[0165] (island ingredient polymer and sea ingredient polymer)

[0166] The same island component polymer and sea component polymer as in Example 1 were used.

[0167] (spinning and drawing)

[0168] Sea-islands were obtained in the same manner as in Example 1, except that the sea-island composite fiber had a fineness of 6.1 dtex and the microfiber had a fiber diameter of 5.5 μm using the above-mentioned sea component polymer and island component polymer. Raw cotton of type composite fiber.

[0169]

[0170] Using the above-mentioned raw cotton, it processed similarly to Example 1, and produced the nonwoven fabric.

[0171]

[0172] Except having used the above-mentioned nonwoven fabric, it carried out similarly to Example 1, and obtained the sheet|seat, artificial leather, and artificial leather (product). The obtained artificial leather (product) had a good softness of 5. In addition, the wear loss of MARTINDALE was 6.2 mg, and the surface quality was good a...

Embodiment 3

[0176]

[0177] (island ingredient polymer and sea ingredient polymer)

[0178] The same island component polymer and sea component polymer as in Example 1 were used.

[0179] (spinning and drawing)

[0180] Using the above-mentioned sea component polymer and island component polymer, a sea-island type composite spray jet with 12 islands and 6 inland sea components in each island, 12 islands / hole and 6 inland seas / island was used. Raw cotton of sea-island composite fibers was obtained in the same manner as in Example 1, except that the sea-island composite fibers had a fineness of 7.5 dtex and the microfibers had a fiber diameter of 7.0 μm.

[0181]

[0182] Using the above-mentioned raw cotton, it processed similarly to Example 1, and produced the nonwoven fabric.

[0183]

[0184] Except having used the above-mentioned nonwoven fabric, it carried out similarly to Example 1, and obtained the sheet|seat, artificial leather, and artificial leather (product). The obtain...

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Abstract

The present invention provides a sheet with high mechanical properties, flexibility, lightness and quality and a manufacturing method thereof. The sheet-like article of the present invention has a nonwoven fabric and an elastic polymer as constituents. The nonwoven fabric is mainly composed of ultrafine hollow fibers having an average single fiber diameter in the range of 0.05 to 10 μm. The above ultrafine hollow fibers have 2 to 60 hollow parts.

Description

technical field [0001] The present invention relates to a sheet having high mechanical properties, flexibility, lightness and quality, and a method for producing the same. Background technique [0002] For shoes, bags, and sports shoes, sheets such as artificial leather are required to have mechanical properties, softness, and lightness. Sheets including fibrous structures made of ultrafine fibers have long been known as sheets such as artificial leather excellent in lightness. A fibrous structure formed of ultrafine fibers is generally formed of ultrafine fibers obtained by selectively dissolving and removing only sea components from a fibrous structure formed of sea-island type composite fibers, for example. owned. By using such a method, a fiber structure formed of ultrafine fibers can be obtained, but when the sea component is selectively removed, or due to pressure treatment for adjusting the thickness, etc., the voids between the fibers are greatly reduced. Therefore...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/00D01F6/00
CPCD04H1/46D01D5/24D01D5/36D06N3/106D01F8/04D06N2211/28D06N3/0004D06N3/14D06N3/00D01F6/00D01F6/62D01F8/06D01F8/14D04H1/435D04H1/48D06M15/564D06M2101/32D06N3/0011D06N3/0036D06N3/004D06N2201/02D06N2203/068D06N2209/1635D10B2501/043
Inventor 西村一松崎行博西村诚金子诚
Owner TORAY IND INC