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US5624420A Expired / Lapsed US ⏱️ 0.0 years remaining

Disposable training pants having a non-perforated tear line through elastic

Assignee: Procter and Gamble Co
•
Filing: 1995-07-17
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Granted: 1997-04-29
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Expires: 2015-07-17
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Abstract

Abstract Non-perforated tear lines for removal and evacuation of contents of disposable undergarments such as training pants. Non-perforated tear lines include a series of bond sites which are shaped, sized, spaced and arranged to provide a zone of weakness to permit severance of nonelasticized portions as well as elastic disposed in the waistband, the body of the pant, and the elastic leg bands for complete removal. Bond sites are formed by displacing a portion of material such that a thickened outer edge defines a weakened area of reduced thickness. Thus, elastic in the waistband may be disposed continuously 360 degrees around the wearer's waist, and elastic in the leg bands may be disposed continuously 360 degrees around the wearer's legs. In addition, improved pants having elasticized ear flaps in the body of the pants can be conveniently removed from the wearer. The shape, size, spacing and arrangement of the individual bond sites is determined for each material used in order to permit severance of the particular material while preventing premature removal. Because the tear lines of this invention are capable of separating elastic, location of the tear lines is not limited to side seams, but may be placed on the front of the pants for convenience.

Inventors

  • 👤 Russell P. Bridges
  • 👤 James R. Golan
  • 👤 Stephen J. Lange
  • 👤 Michael J. Madill
  • 👤 Robert H. Siegfried

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 21:55
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/49; A61F13/496; A61F13/4963; A61F13/49007; A61F13/49009; A61F13/49014; A61F13/49015; A61F13/56; A61F13/5622; A61F13/565; A61F13/49011; A61F13/491; A61F2013/49087; A61F13/51; A61F13/514; A61F13/51456; A61F2013/51468

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 85 words
An easily removable elasticized disposable undergarment, comprising: a chassis having a front portion and a rear portion, said front portion and said rear portion contiguous through a crotch portion; an elastic band located in said chassis; at least one tear line comprising a series of periodically spaced bond sites separated by unbonded areas located on said chassis and said elastic band, said periodically spaced bond sites providing a zone of weakness such that said chassis tears at said tear line during removal of said undergarment.
Claim 2
Dependent Claim 85 words
An easily removable elasticized disposable undergarment, comprising: a chassis having a front portion and a rear portion, said front portion and said rear portion contiguous through a crotch portion; an elastic band located in said chassis; at least one tear line comprising a series of periodically spaced bond sites separated by unbonded areas located on said chassis and said elastic band, said periodically spaced bond sites providing a zone of weakness such that said chassis tears at said tear line during removal of said undergarment.
Claim 3
Dependent Claim 31 words
The undergarment of claim 1 wherein each said bond site is formed by displacing a portion of said chassis to form a thickened outer edge defining an area of reduced thickness.
Claim 4
Dependent Claim 22 words
The undergarment of claim 2 wherein approximately 50% to 90% of said portion of said chassis is displaced to said outer edge.
Claim 5
Dependent Claim 15 words
The undergarment of claim 3 wherein said bond sites are formed by rotary pressure bonding.
Claim 6
Dependent Claim 14 words
The undergarment of claim 3 wherein said bond sites are formed by ultrasonic bonding.
Claim 7
Dependent Claim 18 words
The undergarment of claim 3 wherein said tear line is positioned on said front portion of said chassis.
Claim 8
Dependent Claim 29 words
The undergarment of claim 1 wherein said elastic band further includes a waistband disposed in at least said rear portion; and legbands disposed in at least said crotch portion.
Claim 9
Dependent Claim 12 words
The undergarment of claim 7 wherein said elastic band is elastic film.
Claim 10
Dependent Claim 15 words
The undergarment of claim 7 wherein said waistband is further located in said front portion.
Claim 11
Dependent Claim 12 words
The undergarment of claim 7 wherein said elastic band is elastic strands.
Claim 12
Dependent Claim 49 words
The undergarment of claim 10 wherein adjacent bond sites of said chassis overlap and are spaced such that each elastic strand is overlapped by at least one bond site for severing said elastic strand while retaining said unbonded areas between said bond sites for maintaining strength of said chassis.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2000-04-28 2000-10-28 2001-04-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2004-04-28 2004-10-28 2005-04-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2008-04-28 2008-10-28 2009-04-29 $7700.00 Window Closed / Lapsed

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