Laminated non-woven fabric, and manufactured article using the same

Patent metadata

Field	Value
Publication number	US-10052840-B2
Application number	US-201113877172-A
Country	US
Kind code	B2
Filing date	Oct 3, 2011
Priority date	Oct 5, 2010
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

A laminated non-woven fabric and a manufactured article using the laminated non-woven fabric are provided. The laminated non-woven fabric is formed by clamping a fibrous layer B between two of fibrous layer A, wherein the fibrous layer B is obtained by using a fiber melting or softening at 120° C. or less, and fibrous layer A includes a fiber neither melting nor softening at 120° C. or less, in which the fibrous layer A and the fibrous layer B are integrated through point thermal compression bonding, and interlayer peeling strength between the fibrous layer A and the fibrous layer B ranges from 0.3 Newton (N)/25 millimeters (mm) to 4.0 N/25 mm.

First claim

What is claimed is:

1. A laminated non-woven fabric, comprising two of fibrous layers A and a fibrous layer B disposed between the two of fibrous layers A, the fibrous layer B is obtained by using a fiber melting or softening at 120° C. or less, and the fibrous layer B is a mixed fiber obtained by using ethylene-octene copolymer having melting point of 76° C., and ethylene-octene copolymer having melting point of 100° C. as raw materials, and the two of fibrous layers A each comprising a fiber neither melting nor softening at 120° C. or less, wherein the fibrous layer A and the fibrous layer B are integrated through point thermal compression bonding, and interlayer peeling strength between the fibrous layer A and the fibrous layer B ranges from 0.3 Newton (N)/25 millimeters (mm) to 4.0 N/25 mm, and wherein the melting point or softening point of the fiber component in the fibrous layer A is 10° C. higher than that of the fiber component in the fibrous layer B.

2. The laminated non-woven fabric according to claim 1 , wherein an area ratio occupied by a point thermal compression bonding portion on a surface of the laminated non-woven fabric ranges from 2% to 40%.

3. The laminated non-woven fabric according to claim 1 , wherein at the point thermal compression bonding portion, a fiber forming the fibrous layer A maintains a fiber shape, and at a bonding point of a fiber forming the non-woven fabric, a fiber forming the fibrous layer B deforms in a manner of increasing a contact area with a surface of the fiber forming the non-woven fabric and is bonded integrally.

4. The laminated non-woven fabric according to claim 1 , wherein the fiber forming the fibrous layer B is an elastomer fiber.

5. The laminated non-woven fabric according to claim 1 , wherein the fibrous layer B is a fibrous layer formed of mixing at least two types of elastomer fibers with different melting points or different softening points.

6. The laminated non-woven fabric according to claim 1 , wherein the fiber forming the fibrous layer B is an ultrafine long fiber with a fiber diameter being from 0.5 micrometer (μm) to 15 μm.

7. A manufactured article, obtained by using the laminated non-woven fabric according to claim 1 .

Assignees

• Maeda Noriko
• Iwata Junji
• Matsuda Yasushi
• Kojima Mitsuru
• Jnc Corp
• Jnc Fibers Corp

Inventors

• Maeda Noriko
• Iwata Junji
• Matsuda Yasushi
• Kojima Mitsuru

Classifications

• B32B2260/021

  Fibrous or filamentary layer · CPC title

• B32B5/26

  another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)} · CPC title

• B32B2262/0253

  Polyolefin fibres · CPC title

• B32B2250/20

  All layers being fibrous or filamentary · CPC title

• B32B2262/04

  Cellulosic plastic fibres, e.g. rayon · CPC title