Patent US4701237A successfully refreshed from Google Patents.
US4701237A
Expired / Lapsed
US
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Web with enhanced fluid transfer properties and method of making same
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1986-06-05
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Granted: 1987-10-20
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Expires: 2006-06-05
Abstract
Abstract An absorbent web is provided with spaced apertures which have been formed by slitting, tensioning, and setting fusible material which forms a part of the web. The web preferably includes absorbent material which is capable of increased absorbency when compared to conventional cellulosic fibers.
Inventors
- 👤 Frederich O. Lassen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:25
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/60; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T428/00; Y10T428/24; Y10T428/24273
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
91 words
A method for forming a web from a fibrous mass said web containing a thermoplastic component and fibers generally aligned in the machine direction said web including spaced apertures comprising: (a) depositing a fibrous mass containing a fusible component to form a web; (b) slitting said web in a discretely spaced predetermined pattern; (c) tensioning said web in the machine and cross directions to fibrillate said web to form said spaced apertures; and (d) fixing said web with said apertures by heating and then lowering the temperature of said thermoplastic components.
Claim 2
Independent Claim
91 words
A method for forming a web from a fibrous mass said web containing a thermoplastic component and fibers generally aligned in the machine direction said web including spaced apertures comprising: (a) depositing a fibrous mass containing a fusible component to form a web; (b) slitting said web in a discretely spaced predetermined pattern; (c) tensioning said web in the machine and cross directions to fibrillate said web to form said spaced apertures; and (d) fixing said web with said apertures by heating and then lowering the temperature of said thermoplastic components.
Claim 3
Dependent Claim
17 words
The method according to claim 1 wherein said web is meltblown and absorbent is introduced during meltblowing.
Claim 4
Dependent Claim
23 words
The method of claim 1 wherein said thermoplastic component is fibrous and forms a significant proportion of the structural strength of the web.
Claim 5
Dependent Claim
13 words
The method of claim 1 wherein said thermoplastic component is in powder form.
Claim 6
Dependent Claim
22 words
The method of claim 1 wherein the said thermoplastic component comprises a thermoplastic polymer that is lowered below its glass transition temperature.
Claim 7
Independent Claim
11 words
The method of cliam 1 wherein said fibers comprise cellulosic fibers.
Claim 8
Independent Claim
11 words
The method of cliam 1 wherein said fibers comprise cellulosic fibers.
Claim 9
Dependent Claim
22 words
The method of claim 1 wherein said slitting forms apertures of decreasing size from the top to the bottom of said web.
Claim 10
Dependent Claim
17 words
The method of claim 1 wherein extra absorbent particles are added during formation of said fibrous mass.
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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) | 1990-10-19 | 1991-04-20 | 1991-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-19 | 1995-04-20 | 1995-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-19 | 1999-04-20 | 1999-10-20 | $7700.00 | Window Closed / Lapsed |