US 8,133,343 B2Granted

Disposable wearing article

AssigneeZuiko Corporation

InventorsTakao Wada, Toyoshi Umebayashi, Shuhei Kurata, Mamoru Itani

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Abstract

A method comprising a step of manufacturing an elastic laminated body by laminating two webs and while inserting an elastic member in an extended state in a web length direction in between; a step of cutting the elastic laminated body in a length direction so that a concave portion and a convex portion appear alternately; a step of attaching a cover sheet to bridge between the concave portion and the convex portion of cut first elastic laminated body and second elastic laminated body, respectively; a step of widening the first elastic laminated body and the second elastic laminated body to which the cover sheet is attached; and a step of attaching an absorber onto the cover sheet, lessens the occurrence of wrinkles and creases produced when webs are cut, and eliminates a problem attributed to the occurrence of wrinkles and arising when an absorber is attached.

Claims13

Dependent claims

A method for manufacturing a disposable wearing article, comprising the steps of:

cutting an outer surface web in a length direction of the outer surface web to form a first outer surface web having a constant width in a width direction of the first outer surface web and a second outer surface web having a constant width in a width direction of the second outer surface web;
spacing the first outer surface web and the second outer surface web from each other;
cutting an inner surface web in a length direction of the inner surface web to form a first inner surface web and a second inner surface web;
spacing the first inner surface web and the second inner surface web from each other;
manufacturing a first elastic laminated body by laminating the first outer surface web to the first inner surface web so as to define a first end portion on the first outer surface web, the first end portion protruding outwardly beyond a side edge of the first inner surface web in a width direction of the first elastic laminated body, while placing a first body-fitting elastic member in an extended state in a web length direction between the first outer surface web and the first inner surface web after the first outer surface web and the first inner surface web have been separated respectively from the second outer surface web and the second inner surface web;
manufacturing a second elastic laminated body by laminating the second outer surface web to the second inner surface web so as to define a second end portion on the second outer surface web, the second end portion protruding outwardly beyond a side edge of the second inner surface web in a width direction of the second elastic laminated body, while placing a second body-fitting elastic member in an extended state in a web length direction between the second outer surface web and the second inner surface web after the second outer surface web and the second inner surface web have been separated respectively from the first outer surface web and the first inner surface web;
attaching an absorber to the first elastic laminated body and the second elastic laminated body which are spaced from each other;
placing a first waist elastic member upon the first end portion and a second waist elastic member upon the second end portion;
and
folding the first end portion inward to thereby enclose the first waist elastic member therein and folding the second end portion inward to thereby enclose the second waist elastic member therein after the step of manufacturing the first elastic laminated body and the second elastic laminated body.

7 more elements

A method for manufacturing a disposable wearing article, comprising the steps of:

cutting an inner surface web in a length direction of the inner surface web into a first inner surface web and a second inner surface web;
spacing the first inner surface web and the second inner surface web from each other;
manufacturing a first elastic laminated body and a second elastic laminated body by laminating a single outer surface web over the first inner surface web and the second inner surface web, the first elastic laminated body and the second elastic laminated body being connected via the single outer surface web, while placing a first body-fitting elastic member in an extended state in a web length direction between the single outer surface web and the first inner surface web and placing a second body-fitting elastic member in an extended state in a web length direction between the single outer web and the second inner surface web after spacing the first inner surface web and the second inner surface web from each other;
and
forming a first portion where a contractive force of the first body-fitting elastic member is lessened in the first elastic laminated body after the step of manufacturing the first elastic laminated body and the second elastic laminated body;
forming a second portion where a contractive force of the second body-fitting elastic member is lessened in the second elastic laminated body, the first portion and the second portion being arranged in a width direction of the single outer surface web after the step of manufacturing the first elastic laminated body and the second elastic laminated body;
attaching an absorber to the first inner surface web at the first portion and the second inner surface web at the second portion which are spaced from other, and attaching the absorber to the single outer surface web between the first portion and the second portion while tension in a web length direction is kept applied to the single outer surface web;
and
forming a leg hole portion by cutting out the single outer surface web after the step of manufacturing the first elastic laminated body and the second elastic laminated body, wherein:
in the step of manufacturing the first elastic laminated body and the second elastic laminated body, the single outer surface web is laminated over the first inner surface web and the second inner surface web so as to define a first end portion and a second end portion on the single outer surface web protruding outwardly beyond a side edge of the first inner surface web and a side edge of the second inner surface web in a width direction of the single outer surface web respectively,
the method further comprising:
placing a first waist elastic member upon the first end portion and a second waist elastic member upon the second end portion;
and
folding the first end portion inward to thereby enclose the first waist elastic member therein and folding the second end portion inward to thereby enclose the second waist elastic member therein.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/758,247Filed 12 Apr 2010 · division
Priority: JP 2003-2882046 Aug 2003
Published: US 2010/0193111 A15 Aug 2010
Granted: 13 Mar 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

A61F 13/15593
Of babies' napkins, e.g. diapers: having elastic ribbons fixed thereto; Devices for applying the ribbons
A61F 13/15699
Apparatus or processes for manufacturing: forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or…
A61F 13/15723
Mechanical treatment, e.g. notching, twisting, compressing, shaping: partitioning batts; Cutting
A61F 13/15756
Apparatus or processes for manufacturing: applying tabs, strips, tapes, loops; Knotting the ends of pads

Family

PCT/JP2004/011498Parent of this division · filed 4 Aug 2004
US 2010/0193111 A1Pre-grant publication · published 5 Aug 2010
Application10/565,151Parent of this division
US 7,754,044 B2Parent of this division
US 2006/0254708 A1Published application
US 8,133,343 B2This patent

From the US filing history. Foreign family members aren’t listed.