Patent US4882213A successfully refreshed from Google Patents.
US4882213A
Expired / Lapsed
US
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Absorbent article with tear line guide
Assignee: Weyerhaeuser Co
•
Filing: 1988-04-29
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Granted: 1989-11-21
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Expires: 2008-04-29
Abstract
Abstract An absorbent article is described which may be formed at least in part of thermoplastic and other fibers. The article is densified along a first region and has a tear line defined in the first region. A second region of lower density than the first region is provided at the termination point of the tear line to assist in stopping tearing along the tear line. In addition, densified reinforcing regions can be provided outside areas where the tear line curves or switches directions. Perforations or cuts in the tear line may extend continuously around the corner of the tear line to assist tearing around the corner.
Inventors
- 👤 Paul G. Gaddis
- 👤 Lee E. Perdelwitz, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:35
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/14; A; A47; A47C; A47C31/00; A47C31/10; A47C31/11; A47C31/116; A47D; A47D15/00; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2307/00; B32B2307/50; B32B2307/582; B32B2605/00; B32B2605/003; Y; Y10; Y10S; Y10S297/00; Y10S297/05; Y10T; Y10T428/00; Y10T428/15; Y10T428/24; Y10T428/24273; Y10T428/24298; Y10T428/24314; Y10T428/24322; Y10T428/24331; Y10T428/24479; Y10T428/24595; Y10T428/24603; Y10T428/24612; Y10T428/25; Y10T428/253
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
88 words
An absorbent article comprising: a body comprised of fiber material; the body having a densified first region of fiber material of a first density and a second region of fiber material contained in the first region and being of a second density lower than the first density; a weakened area positioned within the densified first region to define at least one line in such first densified region, the line terminating in the second region, whereby the line comprises a tear line along which the article may be torn.
Claim 2
Dependent Claim
88 words
An absorbent article comprising: a body comprised of fiber material; the body having a densified first region of fiber material of a first density and a second region of fiber material contained in the first region and being of a second density lower than the first density; a weakened area positioned within the densified first region to define at least one line in such first densified region, the line terminating in the second region, whereby the line comprises a tear line along which the article may be torn.
Claim 3
Dependent Claim
30 words
An article according to claim 1 which the weakened area comprises perforations defining a line which extends around a corner, the perforations comprising a cut which extends around the corner.
Claim 4
Dependent Claim
27 words
An article according to claim 1 in which the weakened area comprises perforations which define the at least one line along which the article may be torn.
Claim 5
Dependent Claim
22 words
An article according to claim 1 in which the fiber material is comprised of a thermbonded mixture of thermoplastic and natural fibers.
Claim 6
Dependent Claim
90 words
An article according to claim 1 for an infant seat of the type having at least one strap for retaining an infant in the seat, the body comprising an infant seat liner having a lower leg supporting section, a central seat supporting section and an upper section, the fiber material comprising a core of the body, the body additionally including a cover sheet and a face sheet with the core sandwiched therebetween, the line defining at least one strap receiving slot for receiving the strap of the infant seat liner.
Claim 7
Dependent Claim
90 words
An article according to claim 4 for an infant seat of the type having at least one strap for retaining an infant in the seat, the body comprising an infant seat liner having a lower leg supporting section, a central seat supporting section and an upper section, the fiber material comprising a core of the body, the body additionally including a cover sheet and a face sheet with the core sandwiched therebetween, the line defining at least one strap receiving slot for receiving the strap of the infant seat liner.
Claim 8
Dependent Claim
92 words
An absorbent article comprising: a body comprised of fiber material; the body including a densified strip of fiber material and the densified strip having a curved portion; a weakened area within the densified strip extending around the curved portion and defining a line, whereby the line comprises a tear line along which the article may be torn; and the body also including a densified reinforcing region of fiber material which is spaced from the densified strip and positioned to extend around the curved portion of the densified strip to reinforce the article.
Claim 9
Dependent Claim
92 words
An absorbent article comprising: a body comprised of fiber material; the body including a densified strip of fiber material and the densified strip having a curved portion; a weakened area within the densified strip extending around the curved portion and defining a line, whereby the line comprises a tear line along which the article may be torn; and the body also including a densified reinforcing region of fiber material which is spaced from the densified strip and positioned to extend around the curved portion of the densified strip to reinforce the article.
Claim 10
Dependent Claim
46 words
An article according to claim 7 in which the body also includes a line terminating region of fiber material of a density less than the density of the densified strip and positioned within the densified strip such that the line terminates in the line terminating region.
Claim 11
Dependent Claim
30 words
An article according to claim 8 wherein the curved portion comprises a corner and in which the weakened area comprises perforations which comprise a cut which extends around the corner.
Claim 12
Dependent Claim
16 words
An article according to claim 7 comprised of a thermobonded mixture of thermoplastic and natural fibers.
Claim 13
Dependent Claim
90 words
An article according to claim 7 for an infant seat of the type having at least one strap for retaining an infant in the seat, the body comprising an infant seat liner having a lower leg supporting section, a central seat supporting section and an upper section, the fiber material comprising a core of the body, the body additionally including a cover sheet and a face sheet with the core sandwiched therebetween, the line defining at least one strap receiving slot for receiving the strap of the infant seat liner.
Claim 14
Dependent Claim
89 words
An article according to claim 10 for an infant seat of the type having at least one strap for retaining an infant in the seat, the body comprising an infant seat liner having a lower leg supporting section, a central seat supporting section and an upper section, the fiber material comprising a core of the body, the body including a cover sheet and a face sheet with the core sandwiched therebetween, the line defining at least one strap receiving slot for receiving the strap of the infant seat liner.
Claim 15
Dependent Claim
91 words
An absorbent article comprising: a body comprising thermoplastic fibers and natural fibers; the body having a densified first region of fibers of a first density; perforations in the densified first region defining a line which extends in a first direction to a first location and abruptly changes direction at the first location to extend in a second direction, the perforations comprising a continuous cut at the first locations which extends in both the first and second direction, whereby the line comprises a tear line along which the body may be torn.
Claim 16
Dependent Claim
91 words
An absorbent article comprising: a body comprising thermoplastic fibers and natural fibers; the body having a densified first region of fibers of a first density; perforations in the densified first region defining a line which extends in a first direction to a first location and abruptly changes direction at the first location to extend in a second direction, the perforations comprising a continuous cut at the first locations which extends in both the first and second direction, whereby the line comprises a tear line along which the body may be torn.
Claim 17
Dependent Claim
19 words
An article according to claim 13 in which the first and second directions are generally orthogonal to one another.
Claim 18
Dependent Claim
93 words
An article according to claim 13 for an infant seat of the type having at least one strap for retaining an infant in the seat, the body comprising an infant seat liner having a lower leg supporting section, a central seat supporting section and an upper section, the thermoplastic containing fibers and natural fibers comprising a core of the body, the body including a cover sheet and a face sheet with the core sandwiched therebetween, the line defining at least one strap receiving slot for receiving the strap of the infant seat liner.
Claim 19
Dependent Claim
92 words
An article according to claim 14 for an infant seat of the type having at least one strap for retaining an infant in the seat, the body comprising an infant seat liner having a lower leg supporting section, a central seat supporting section and an upper section, the thermoplastic containing and natural fibers comprising a core of the body, the body including a cover sheet and a face sheet with the core sandwiched therebetween, the line defining at least one strap receiving slot for receiving the strap of the infant seat liner.
Claim 20
Dependent Claim
15 words
An article according to claim 1 in which the second region has a curved periphery.
Claim 21
Dependent Claim
13 words
An article according to claim 1 in which the second region is circular.
Claim 22
Dependent Claim
48 words
An article according to claim 3 and in which the line extends around a corner, in which the body also includes a reinforcing densified third region of fiber material extending about the outside of the corner and being spaced apart from the first densified region containing the line.
Claim 23
Dependent Claim
16 words
An article according to claim 13 in which the thermoplastic containing and natural fibers are thermobonded.
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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) | 1992-11-20 | 1993-05-22 | 1993-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-20 | 1997-05-22 | 1997-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-20 | 2001-05-22 | 2001-11-21 | $7700.00 | Window Closed / Lapsed |