# US 10,370,784 B2 · Mesh nonwoven fabric

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- Number: US 10,370,784 B2
- Document ID: US10370784B2
- Status: Granted
- Kind: B2
- Application number: 15/512,178
- Filed: 2015-09-15
- Published: 2017-09-28
- Granted: 2019-08-06
- Earliest claimed: 2014-09-19
- Assignees: Jxtg Nippon Oil & Energy Corporation
- Applicants: JXTG Nippon Oil & Energy Corporation
- Inventors: Takashi Onodera; Hideo Kumehara; Hiroshi Yazawa; Yasuo Sasaki; Shuichi Murakami
- Web page: https://patentgrep.com/patent/US10370784B2

## CPC

- D04H 13/02: Production of non-woven fabrics by partial defibrillation of oriented thermoplastics films
- B29C 70/086: {and with one or more layers of pure plastics material, e.g. foam layers (applying a non-preformed coating, e.g. a gel-coat, B29C37/0025; with foam blocks B29C70/86)}
- B29C 70/687: {the inserts being oriented, e.g. nets or meshes}
- B32B 5/022: {Non-woven fabric}
- D04H 3/045: for net manufacturing
- D04H 13/00: Other non-woven fabrics
- D04H: MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL (weaving D03; knitting D04B; braiding D04C; net-making D04G; sewing D05B; tufting D05C; finishing non-woven fabrics D06); FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING {; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION}(non-woven fabrics having an intermediate or external layer of a different kind, e.g. of woven fabric, B32B)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

## Abstract

A mesh nonwoven fabric which is seamless and excellent in appearance is provided. A seamless mesh nonwoven fabric is prepared by laminating a first mesh film 20 containing stem fibers 20a stretching parallel to each other in a first direction and branch fibers 20b connecting adjacent stem fibers 20a together, and a second mesh film 30 containing stem fibers 30a stretching parallel to each other in a second direction intersecting the first direction and branch fibers 30b connecting adjacent stem fibers 30a.

## Claims

### Claim 1

A seamless mesh nonwoven fabric comprising a first seamless mesh film and a second seamless mesh film laminated on the first mesh film, wherein
the first mesh film comprises first stem fibers which are arranged parallel to each other in a longitudinal direction and first branch fibers which are narrower than the first stem fibers, and are arranged parallel to each other in a direction inclined to the longitudinal direction, wherein each of the first branch fibers connects the first stem fibers that are adjacent to it;
the second mesh film comprises second stem fibers which are arranged parallel to each other in a transverse direction and second branch fibers which are narrower than the second stem fibers, and are arranged parallel to each other in a direction inclined to the transverse direction, wherein each of the first branch fibers connects the first stem fibers that are adjacent to it;
the first stem fibers of the first mesh film are almost orthogonal to the second stem fibers of the second mesh film; and
the first branch fibers of the first mesh film are almost orthogonal to the second branch fibers of the second mesh film, and
wherein a length of the seamless mesh nonwoven fabric is larger than a width of the seamless mesh nonwoven fabric, and the length is a dimension in the longitudinal direction that is a machine direction when producing the nonwoven fabric, or the first seamless mesh film and the second seamless mesh film constituting the fabric and the width is a dimension in a direction orthogonal to the longitudinal direction.

### Claim 2 (depends on 1)

The seamless mesh nonwoven fabric according to claim 1, wherein
a length of an opening part formed by the first stem fibers and the first branch fibers along the first stem fibers in the first mesh film is the same as a length of an opening part formed by the second stem fibers and the second branch fibers along the second stem fibers in the second mesh film; and
a length of an opening part formed by the first stem fibers and the first branch fibers along the first branch fibers in the first mesh film is the same as a length of an opening part formed by the second stem fibers and the second branch fibers along the second branch fibers in the second mesh film.

### Claim 3 (depends on 1)

The seamless mesh nonwoven fabric according to claim 1, wherein a pattern of the second mesh film is a pattern obtained by rotating a pattern of the first mesh film at 90° or −90°.

### Claim 4 (depends on 1)

The seamless mesh nonwoven fabric according to claim 1, wherein each of the first and second mesh films comprises a layer consisting of a first thermoplastic resin, and a layer consisting of a second thermoplastic resin having a lower melting point than that of the first thermoplastic resin.

### Claim 5 (depends on 1)

A mesh nonwoven fabric-wound body prepared by winding the seamless mesh nonwoven fabric according to claim 1 in a roll form.

### Claim 6 (depends on 1)

A method for producing the seamless mesh nonwoven fabric according to claim 1, comprising:
a step of subjecting a uniaxially stretched multilayer polyolefin film to fiber splitting in a longitudinal direction (machine direction) and then uniaxially widening the film in a width direction to obtain a first mesh film,
a step of forming slits on a multilayer polyolefin film in a width direction and then uniaxially stretching the film in the width direction to obtain a second mesh film, and
a step of continuously laminating seamlessly the first and second mesh films and adhering them.