Unlock instant, AI-driven research and patent intelligence for your innovation.

Expandable/contractable sheet and absorbent article

A stretchable sheet and absorbent technology, which can be used in absorbent pads, layered products, transportation and packaging, etc., can solve the problems of flexibility deterioration and stretchability deterioration of sheet members.

Active Publication Date: 2020-05-01
UNI CHARM CORP
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of attaching the elastic member with an adhesive, the curing of the adhesive attached to the outer surface of the elastic member may cause the risk of deterioration of the elasticity of the elastic member, that is, the stretchability and / or may cause deterioration of the flexibility of the sheet member. risks of

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Expandable/contractable sheet and absorbent article
  • Expandable/contractable sheet and absorbent article
  • Expandable/contractable sheet and absorbent article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] At least the following matters will become clear from the description of this specification and the accompanying drawings.

[0024] A stretchable sheet, which has an up-down direction and a left-right direction crossing each other, the stretchable sheet includes: a first sheet; a second sheet; a plurality of welded parts, which make the first sheet and the second sheet joining; a plurality of elastic members capable of expanding and contracting in the left-right direction, the plurality of elastic members being disposed between the first sheet and the second sheet in a spaced state in the up-down direction, Above a specific elastic member among the plurality of elastic members, the plurality of welded portions include a first welded portion, and a third welded portion which is connected to the first welded portion on one side in the left-right direction. Adjacent to, below the specific elastic member, the plurality of welded portions further includes a second welded por...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An expandable / contractable sheet (31), in which a plurality of elastic members (35) are positioned between a first sheet (32) and a second sheet (33) that are joined by a plurality of weld sections (50), has a first weld section (51) and a third weld section (53) on an upper side of one elastic member (35) and has a second weld section (52) and a fourth weld section (54) on a lower side of the oneelastic member (35). The one elastic member (35) is attached by being clamped in a vertical direction by the first weld section (51) and the second weld section (52) and being clamped in the verticaldirection by the third weld section (53) and the fourth weld section (54), the first weld section (51) and the third weld section (53) have portions that overlap in the vertical direction, and the lower edge position of the first weld section (51) and the lower edge position of the third weld section (53) are not aligned in the vertical direction.

Description

technical field [0001] The present invention relates to stretchable sheets and absorbent articles. Background technique [0002] A disposable diaper is known as an example of an absorbent article that absorbs excrement such as urine. A sheet member is generally employed as a waist member of a disposable diaper, in which stretchability is imparted to the sheet member by attaching an elastic member to the sheet member with an adhesive such as a hot-melt adhesive. However, in the case of attaching the elastic member with an adhesive, the curing of the adhesive attached to the outer surface of the elastic member may cause the risk of deterioration of the elasticity of the elastic member, that is, the stretchability and / or may cause deterioration of the flexibility of the sheet member. risks of. Therefore, recently, it has been considered to attach the elastic member to the sheet member without using an adhesive. [0003] For example, a linear element capable of elastic elonga...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61F13/49D04H1/559D04H1/74A61F13/51
CPCA61F13/49A61F13/51D04H1/559D04H1/74A61F13/4963A61F13/4902A61F13/49012A61F13/49019A61F13/496A61F13/49061A61F13/51464A61F13/15585A61F2013/49033A61F2013/15886A61F2013/15934B32B7/05A61F13/49014A61F2013/49093B32B5/022B32B27/12B32B27/32B32B2307/51B32B2307/726B32B2555/02
Inventor 大坪俊文
Owner UNI CHARM CORP