# US 2014/0190626 A1 · Method of production of web member including tow

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- Number: US 2014/0190626 A1
- Document ID: US20140190626A1
- Status: Published application
- Kind: A1
- Application number: 13/749,715
- Filed: 2013-01-25
- Published: 2014-07-10
- Earliest claimed: 2013-01-10
- Assignees: Unicharm Corporation
- Applicants: Unicharm Corporation
- Inventors: Yuji YAMASHITA; Kazuhiko HOSHIKA; Hiroyoshi TAKADA
- Web page: https://patentgrep.com/patent/US20140190626A1

## CPC

- B29C 43/203: {Making multilayered articles}
- B32B 5/022: {Non-woven fabric}
- B32B 5/08: the fibres or filaments of a layer being of different substances {, e.g. conjugate fibres, mixture of different fibres}
- B32B 5/26: another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)}
- D04H 3/005: Synthetic yarns or filaments (D04H3/013 takes precedence)
- D04H 3/02: characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
- D04H 3/08: characterised by the method of strengthening or consolidating
- B32B 2250/20: All layers being fibrous or filamentary
- B32B 2262/0253: Polyolefin fibres
- B32B 2262/0284: Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
- B32B 2262/12: Conjugate fibres, e.g. core/sheath or side-by-side
- B32B 2432/00: Cleaning articles, e.g. mops or wipes
- 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
- 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)

## Abstract

The method of production of a web having a tow according to the present invention has a transfer step of transferring a product form web member which is formed by a continuous web member being cut, which product form web member is configured having a plurality of fibrous members formed from tows, to a packaging step which packages the product form web member, the transfer step has a stacking step of stacking a plurality of product form web members to form a stacked member and a variation correction step of suppressing variation of bulk of the stacked member by pressing the stacked member from above the stacked member.

## Claims

### Claim 1

(canceled)

### Claim 2

(canceled)

### Claim 3

A method of production of a web member which has a tow, said method comprising:
a transfer step of conveying a product form web member which has been formed by cutting a continuous web member and which has a plurality of fibrous members formed from tows to a packaging step of packaging said product form web member,
said transfer step having
a stacking step of stacking a plurality of said product form web members to form a stacked member; and
a variation correction step which suppresses variation of bulk of said stacked member by pressing said stacked member from above said stacked member,
wherein said variation correction step has a pressing step of pressing said stacked member from above said stacked member by running said stacked member through a predetermined pressing path,
wherein said predetermined pressing path includes
a bulk reducing path which has an entrance at a first height and an exit at a second height which is lower than said first height and which has a top wall which inclines from said entrance toward said exit; and
a bulk stabilizing path which continues after said bulk reducing path and having a predetermined length at the second height of the exit of said bulk reducing path,
said first height being set to become higher than the bulk of said stacked member at said stacking step, while said second height being set to become lower than the bulk of said stacked member at said stacking step,
wherein said pressing step includes
a bulk reducing step of running said stacked member through said bulk reducing path to thereby reduce the bulk of said stacked member to said second height; and
a bulk stabilizing step of running said stacked member which has run through said bulk reducing path through said bulk stabilizing path following said bulk reducing path to thereby stabilize the bulk of said stacked member at the reduced height.

### Claim 4 (depends on 3)

The method of production as set forth in claim 3, wherein said variation correction step has a pressing step of pressing said stacked member from above said stacked member by using a first endless conveyor and a second endless conveyor which is arranged away from said first endless conveyor to continuously convey said stacked member while running said stacked member through said pressing path.