US 5,618,610 AGranted

Nonwoven fabric wiper and method for making it

AssigneeUni-Charm Corporation

InventorsKatsushi Tomita, Masahiko Shikatani, Hiroo Hayashi, Mitsuhiro Wada

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Abstract

Here is disclosed an improved nonwoven fabric wiper obtained by a method comprising steps of forming a laminate from a web of thermally shrinkable hydrophobic synthetic fibers and a web of hydrophilic fibers put one upon another, jetting high pressure water onto the laminate supported on a supporting roll provided on its peripheral surface with a plurality of fine projections as well as a plurality of drainage apertures, causing the fibers to be entangled or intertwined and rearranged and thereby forming a nonwoven fabric having uneven fiber distribution densities, and heating the nonwoven fabric to crimp the synthetic fibers so that only portions of relatively high fiber density may bulge.

Claims9

Dependent claims

A nonwoven fabric wiper having a plurality of undulations at least on its one surface and being obtained by a method for making it comprising steps of:

a. forming a laminate with at least one layer of hydrophilic fiber web and at least one layer of thermally shrinkable hydrophobic fiber web;
b. jetting high pressure water from nozzles with fine orifices onto said laminate supported on a surface of supporting means provided on its surface with a continuous planar zone, a plurality of intermittently and independently distributed projections and/or recesses and a plurality of fine drainage apertures, causing constituent fibers of said two layers of web to be entangled and rearranged, and thereby forming a nonwoven a fabric having uneven fiber distribution densities in the direction of the plane defined by said laminate;
and
c. dewatering and/or drying said nonwoven fabric followed by heat-treating said nonwoven fabric to crimp said synthetic fibers.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 08/521,095Filed 29 Aug 1995
Priority: JP 6-20320229 Aug 1994
Granted: 8 Apr 1997
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

D04H 1/498
By needling or like operations to cause entanglement of fibres: entanglement of layered webs
A47L 13/16
Scrubbing; Scouring; Cleaning; Polishing: cloths; Pads; Sponges
D04H 1/482
In combination with at least one other method of consolidation: in combination with shrinkage
Y10T 428/24446
Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]: wrinkled, creased, crinkled or creped