US4499139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microsized fabric
Assignee: International Paper Co
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Filing: 1984-03-02
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Granted: 1985-02-12
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Expires: 2004-03-02
Abstract
Abstract An aerated latex microsized single ply hydroentangled fabric wherein a latex mixture is aerated by an Oakes foamer, and then applied to a fabric by a knife-over-roll applicator whereby the latex is worked below the surface of said fabric. The thusly sized fabric is then dried by passing it through an oven. The present invention enables the acquisition of sufficient hydrophobicity in the fabric so as to be a bacterial barrier while preserving therein comfort, drapeability, air permeability, flexibility, and hand. In addition to preserving the above properties, microsizing does not detract from sterilizability of the fabric.
Inventors
- 👤 Walter E. Schortmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:39
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/04; D06N3/047; D06N3/0056; D06N3/0063; D06N2205/00; D06N2205/02; D06N2205/023; D06N2209/00; D06N2209/12; D06N2209/121; D06N2209/123; D06N2209/14; D06N2209/142; D06N2209/16; D06N2209/1671; D06N2211/00; D06N2211/12; D06N2211/18; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249978; Y10T428/25; Y10T428/252; Y10T428/31504; Y10T428/3154; Y10T442/00; Y10T442/20; Y10T442/2139; Y10T442/2148; Y10T442/2418; Y10T442/2525
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
68 words
A porous, breathable, liquid and bacterial barrier material comprising: a single ply fibrous web having a substantially froth-free face surface, a sized inner core and a substantially froth-free backing surface and, said sized inner core includes a froth size within said web disposed beneath said face surface; said backing surface being substantially free of said froth size, said froth size further including a plurality of micropores disposed throughout.
Claim 2
Dependent Claim
68 words
A porous, breathable, liquid and bacterial barrier material comprising: a single ply fibrous web having a substantially froth-free face surface, a sized inner core and a substantially froth-free backing surface and, said sized inner core includes a froth size within said web disposed beneath said face surface; said backing surface being substantially free of said froth size, said froth size further including a plurality of micropores disposed throughout.
Claim 3
Dependent Claim
14 words
The barrier material of claim 1 wherein said fibrous web is a woven material.
Claim 4
Dependent Claim
14 words
The barrier material of claim 1 wherein said fibrous web is a nonwoven material.
Claim 5
Dependent Claim
15 words
The barrier material of claim 1 wherein said fibrous web is a hydroentangled nonwoven fabric.
Claim 6
Dependent Claim
21 words
The barrier material of claim 1 wherein said micropores range in size from about 10 microns to 100 microns in diameter.
Claim 7
Dependent Claim
16 words
The barrier material of claim 1 wherein said froth sizing is an aerated latex froth size.
Claim 8
Dependent Claim
16 words
The barrier material of claim 6 wherein said froth sizing is an aerated latex-clay froth size.
Claim 9
Dependent Claim
17 words
The barrier material of claim 7 wherein said latex-clay formulation comprises 25-100% acrylic latex and 0-75% clay.
Claim 10
Dependent Claim
17 words
The barrier material of claim 7 wherein said froth sizing further includes a 2% fluorocarbon component therein.
Claim 11
Dependent Claim
17 words
The barrier material of claim 7 wherein thermal absorbing compounds are included within the microporous froth sizing.
Claim 12
Dependent Claim
12 words
The barrier material of claim 7 wherein said latex is substantially thermoplastic.
Claim 13
Dependent Claim
19 words
The barrier material of claim 7 wherein the density of said microporous froth sizing is 100-300 grams per liter.
Claim 14
Dependent Claim
21 words
The barrier material of claim 7 wherein said micropores range in size from about 10 microns to 100 microns in diameter.
Claim 15
Dependent Claim
81 words
A porous, breathable, liquid and bacterial barrier material comprising: a single ply, hydroentangled nonwoven web having a substantially froth-free face surface, a sized inner core and a substantially froth-free backing surface and, said sized inner core includes a latex-clay froth size within said web disposed beneath said surface; said backing surface being substantially free of said froth size, said froth size further including a plurality of micropores ranging in size from about 10 microns to 100 microns in diameter disposed throughout.
Claim 16
Dependent Claim
81 words
A porous, breathable, liquid and bacterial barrier material comprising: a single ply, hydroentangled nonwoven web having a substantially froth-free face surface, a sized inner core and a substantially froth-free backing surface and, said sized inner core includes a latex-clay froth size within said web disposed beneath said surface; said backing surface being substantially free of said froth size, said froth size further including a plurality of micropores ranging in size from about 10 microns to 100 microns in diameter disposed throughout.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-12 | 1988-08-13 | 1989-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-12 | 1992-08-13 | 1993-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-12 | 1996-08-13 | 1997-02-12 | $7700.00 | Window Closed / Lapsed |