Nonwoven fabric

Patent metadata

Field	Value
Publication number	US-9856591-B2
Application number	US-201113580163-A
Country	US
Kind code	B2
Filing date	Mar 9, 2011
Priority date	Mar 30, 2010
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

There is provided a nonwoven fabric excellent in the balance among fuzz resistance, softness and tensile strength. The nonwoven fabric comprises an embossed portion and a non-embossed portion; the embossed portion comprising an emboss pattern that comprises unit patterns each delimited by emboss lines; the emboss lines each comprising a plurality of emboss element parts that are continuously arranged with a predetermined interval; wherein in the direction in which the distance from any arbitrarily-defined point in the non-embossed portion within the unit pattern toward the outside of the emboss lines that delimit the non-embossed portion is shortest, at least one of the plurality of emboss element parts is disposed so as to block the direction in which the distance from the arbitrarily-defined point toward the outside of the emboss lines that delimit the non-embossed portion is shortest.

First claim

The invention claimed is:

1. A spunbonded nonwoven fabric comprising an embossed portion and a non-embossed portion,
the embossed portion comprising an emboss pattern that comprises unit patterns each delimited by emboss lines,
the emboss lines each comprising a plurality of emboss element parts that are continuously disposed with an equal interval from each other so as to form dotted lines,
wherein in the direction in which the distance from any point in the non-embossed portion within the unit pattern toward the outside of the emboss lines that delimit the non-embossed portion is shortest, at least one of the plurality of emboss element parts in the unit pattern is disposed so as to block the direction in which the distance from the point toward the outside of the emboss lines that delimit the non-embossed portion is shortest, and
in all the points where two of the emboss lines intersect one another, each emboss element part is spaced from one another such that each emboss element part does not overlap one another.

2. The spunbonded nonwoven fabric according to claim 1 , wherein the plurality of emboss element parts are parallel to each other, with an equal interval from each other.

3. The spunbonded nonwoven fabric according to claim 1 , wherein the length of the emboss element part is 0.5 to 5 mm, and the interval between the emboss element parts that are disposed so as to form dotted lines is 0.5 to 5 mm.

4. The spunbonded nonwoven fabric according to claim 1 , wherein the shape of the emboss element part is any of a straight line, a curved line and a zigzag shape.

5. The spunbonded nonwoven fabric according to claim 1 , wherein the unit patterns each delimited by the emboss lines are regularly disposed in the machine direction of the nonwoven fabric and in the direction crossing machine direction.

6. The spunbonded nonwoven fabric according to claim 5 , wherein the unit pattern has a length of the width in the machine direction of the nonwoven fabric of 2 to 15 mm, and a length of the width in the direction crossing the machine direction of 2 to 15 mm.

7. The spunbonded nonwoven fabric according to claim 1 , wherein the line width of the emboss line is 0.5 to 3 mm.

8. The spunbonded nonwoven fabric according to claim 1 , wherein the unit pattern delimited by the emboss lines is in the shape of rhombus.

9. The spunbonded nonwoven fabric according to claim 1 , wherein the shape of the emboss element part is a curved line shape.

10. The spunbonded nonwoven fabric according to claim 1 , wherein the shape of the emboss element part is a zigzag shape.

Assignees

• Ichikawa Taro
• Kawakami Yoshihisa
• Mitsui Chemicals Inc

Inventors

• Ichikawa Taro
• Kawakami Yoshihisa

Classifications

• D04H1/54

  by welding together the fibres, e.g. by partially melting or dissolving (in combination with needling D04H1/485) · CPC title

• Y10T428/24479

  including variation in thickness · CPC title

• D04H3/14 Primary

  with bonds between thermoplastic yarns or filaments produced by welding · CPC title