US4701237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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 04:39
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.
References Cited (Backward Citations)
GB796678A
Cited
GB1030414A
Cited
GB1030413A
Cited
US3293104A
Cited
US3676242A
Cited
US3756907A
Cited
GB1337412A
Cited
GB1371863A
Cited
US3978257A
Cited
US4200558A
Cited
US4100324A
Cited
US4014341A
Cited
US4077410A
Cited
US4276338A
Cited
GB2055586A
Cited
US4355066A
Cited
GB2112828A
Cited
GB2113731A
Cited
US4469734A
Cited
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 |