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Elastic tab laminate material

A technology of elastic layer and sheet, applied in the field of elastic sheet

Inactive Publication Date: 2007-10-31
3M CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This workaround of course causes some of the same problems as attaching elastic to garments

Method used

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  • Elastic tab laminate material
  • Elastic tab laminate material
  • Elastic tab laminate material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0121] A nonwoven web / elastomeric film laminate having corrugated regions was prepared by thermal bonding. Film samples 20 shown in Table 1 were laminated at 34 g / m 2 (Manufactured by Avgol Ltd Nonwoven Industries (Holin, Israel) and sold through the sales network of John Cleaver & Assoc. (Wayne, PA)). The nonwoven web was corrugated in-line just prior to lamination in a nip formed by an upper corrugated steel roll (116°C) and a lower corrugated steel roll (149°C), which were machined to The surface of the roller has a plurality of spaced apart circumferential ridges. The plurality of raised spaces formed a 2.54 cm wide corrugated nonwoven web region and a 5.08 cm wide non-corrugated nonwoven web region separating the corrugated region. The corrugation rolls are adjusted so that the plurality of circumferential ridges of the upper roll engages with the plurality of circumferential ridges of the lower roll. The degree of interengagement is adjusted such that the nonwoven fib...

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Abstract

There is provided an extensible elastic tab designed to be adhered to the edge of an article, formed using a coextruded elastic film comprising at least one elastic layer and at least one second layer on at least a first face of the elastic layer with at least one face of the coextruded elastic film attached to at least a partially extensible nonwoven layer. The partially expandable, or extensible nonwoven layer has at least one first portion with limited extensibility in a first direction and at least one second inextensible portion in the first direction. The extensible elastic tab when stretched to the extension limit of the first portion or portions in the first direction will elastically recover at least 1.0 cm, preferably at least 2 cm providing an elastic tab having a Useful Stretch Ratio (as defined in the Examples) of at least 30 percent. The Useful Stretch Ratio includes the portion of the elastic recovery length having an elastic recovery force of greater than 20 grams / cm force, but below a given extension which generally is 90 percent of the extension limit. Further the elastic tab in the region of the Useful Stretch Ratio preferably has an incremental extension force of less than about 300 grams / cm. The invention tab provides definable predictable elastic performance and is useful as a fastening tab used to join to surfaces requiring elastic engagement, particularly a person or animal. The tab is particularly useful as a diaper fastening tab.

Description

technical field [0001] The present invention relates to an extensible elastic sheet that can be used as a fastening sheet to close limited use garments and disposable absorbent articles such as diapers and incontinence briefs, training shorts, diaper liners, hygiene products, etc. . Background technique [0002] The use of elastic materials on or near the body-constraining portion of limited-use garments and disposable absorbent garments is common in patented technologies and commercial products in which elastic films, strands, nonwoven material or foam. When these elastic materials are applied directly to a limited-use garment or disposable absorbent article, the materials are typically applied in an elongated state where the garment or article constricts the wearer's body part. As the elongated elastic material recovers, it causes the material to gather to form a body restraining portion of a disposable absorbent article or limited-use garment or the like with elastic at...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F13/58A61F13/56A61F5/44A61F13/49B32B5/00
CPCA61F13/58A61F13/5622Y10T428/24826Y10T442/601Y10T442/678Y10T442/679A61F13/64B32B3/08B32B3/28B32B5/022B32B5/08B32B7/12B32B27/12B32B27/30B32B27/32B32B27/40B32B2262/0261B32B2262/0276B32B2262/0284B32B2262/14B32B2307/51B32B2555/02
Inventor B·W·伊顿N·B·约翰逊M·R·戈尔曼S·-L·G·王
Owner 3M CO
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