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US7640637B2 Expired / Lapsed US ⏱️ 0.0 years remaining

Methods to modify the fibrous landing layer of a foam based fastener and products made from the same

Assignee: Kimberly Clark Worldwide Inc
•
Filing: 2005-11-01
•
Granted: 2010-01-05
•
Expires: 2025-11-01
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Abstract

Abstract Methods to modify an engaging surface of a fibrous landing layer of a mechanical fastener are generally disclosed, along with products made from the same. For instance, the engaging surface of the landing layer can be mechanically modified to increase the fuzziness of the layer, which allows more fibers to engage the other surface of the mechanical fastener. For example, the improved engaging surface of the landing layer can increase the shear resistance of a mechanical fastener comprising a foam layer and a landing layer.

Inventors

  • 👤 Nadezhda V. Efremova
  • 👤 Lisha Yu
  • 👤 Eric Steindorf

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 08:26
CPC Classifications
A; A44; A44B; A44B18/00; A44B18/0003; A44B18/0011; A44B17/00; A61; A61F; A61F13/00; A61F13/15; A61F13/56; A61F13/62; A61F13/622; A61F13/627; Y; Y10; Y10T; Y10T24/00; Y10T24/27; Y10T24/34; Y10T428/00; Y10T428/23907; Y10T428/2395; Y10T428/24; Y10T428/24008; Y10T428/24777

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 87 words
A method of increasing a perimeter/edge-length ratio of a landing layer of a mechanical fastener, comprising: providing a mechanical fastener comprising a foam layer and a landing layer, wherein the landing layer comprises a fibrous web defining an engaging surface, wherein said engaging surface of the fibrous web landing layer has an original perimeter/edge-length ratio; and mechanically modifying the engaging surface of the landing layer such that the engaging surface has an improved perimeter/edge-length ratio that is at least about 50% higher than the original perimeter/edge-length ratio.
Claim 2
Independent Claim 87 words
A method of increasing a perimeter/edge-length ratio of a landing layer of a mechanical fastener, comprising: providing a mechanical fastener comprising a foam layer and a landing layer, wherein the landing layer comprises a fibrous web defining an engaging surface, wherein said engaging surface of the fibrous web landing layer has an original perimeter/edge-length ratio; and mechanically modifying the engaging surface of the landing layer such that the engaging surface has an improved perimeter/edge-length ratio that is at least about 50% higher than the original perimeter/edge-length ratio.
Claim 3
Dependent Claim 23 words
A method as in claim 1 , wherein the improved perimeter/edge-length ratio is at least about 75% higher than the original perimeter/edge-length ratio.
Claim 4
Dependent Claim 23 words
A method as in claim 1 , wherein the improved perimeter/edge-length ratio is at least about 100% greater than the original perimeter/edge-length ratio.
Claim 5
Dependent Claim 16 words
A method as in claim 1 , wherein the landing layer comprises a nonwoven fibrous web.
Claim 6
Dependent Claim 15 words
A method as in claim 4 , wherein the landing layer comprises a spunbond web.
Claim 7
Dependent Claim 16 words
A method as in claim 4 , wherein the landing layer comprises a bonded carded web.
Claim 8
Dependent Claim 15 words
A method as in claim 4 , wherein the landing layer comprises a meltblown web.
Claim 9
Dependent Claim 51 words
A method as in claim 1 , wherein the perimeter/edge-length ratio of the engaging surface is increased by a process selected from the group consisting of brushing, napping, necking in the cross-machine direction, stretching in the machine direction, needle punching, hydroentangling, dragging over an edge, and dragging over an ultrasonic horn.

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2013-01-04 2013-07-06 2014-01-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2017-01-04 2017-07-06 2018-01-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2021-01-04 2021-07-06 2022-01-05 $7700.00 Window Closed / Lapsed

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