US4673615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stiff fray resistant mat material
Assignee: FOSS MANUFACTURING COMPANY LLC
•
Filing: 1986-01-08
•
Granted: 1987-06-16
•
Expires: 2006-01-08
Abstract
Abstract A stiff abrasion resistant laminated material and process of manufacture thereof. The mat material comprises an extruded sheet of a stiff water resistant thermoplastic polymer, a first layer of a needled non-woven thermoplastic fabric laminated during extrusion to one side of the core sheet, a second layer of a needled non-woven thermoplastic fabric laminated during extrusion to the other side of the sheet wherein the fabric layers are bonded to the sheet solely through interlocking of fiber portions of the fabric materials with the matrix of the sheet.
Inventors
- 👤 Richard Murphy
- 👤 John Capron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:19
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B32B5/00; B32B5/02; B32B5/022; B32B2307/00; B32B2307/50; B32B2307/554; B32B2307/70; B32B2307/726; B32B2307/7265; B32B2471/00; B32B2471/02; B32B2471/04; Y; Y10; Y10T; Y10T428/00; Y10T428/27; Y10T442/00; Y10T442/60; Y10T442/659; Y10T442/666; Y10T442/667
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
119 words
A stiff abrasion resistant laminated mat material comprising: an extruded sheet of a stiff water resistant thermoplastic polymer material selected from the group consisting of ethlene, propylene, vinyl, polyester, and polyamide based polymers and copolymers, the extruded sheet having a thickness of less than about 100 mils; a first layer of a needled non-woven thermoplastic fabric material laminated to one side of the sheet during extrusion of the sheet; and, a second layer of a needled non-woven thermoplastic fabric material laminated to the other side of the sheet during extrusion of the sheet; the first and second layers being bonded to the sheet solely through interlocking of fiber portions of the fabric materials with the matrix of the sheet.
Claim 2
Dependent Claim
119 words
A stiff abrasion resistant laminated mat material comprising: an extruded sheet of a stiff water resistant thermoplastic polymer material selected from the group consisting of ethlene, propylene, vinyl, polyester, and polyamide based polymers and copolymers, the extruded sheet having a thickness of less than about 100 mils; a first layer of a needled non-woven thermoplastic fabric material laminated to one side of the sheet during extrusion of the sheet; and, a second layer of a needled non-woven thermoplastic fabric material laminated to the other side of the sheet during extrusion of the sheet; the first and second layers being bonded to the sheet solely through interlocking of fiber portions of the fabric materials with the matrix of the sheet.
Claim 3
Dependent Claim
24 words
The mat material of claim 1 wherein the first and second fabric materials are needle punched less than about 2,000 punches per square inch.
Claim 4
Dependent Claim
25 words
The mat material of claim 2 wherein the first and second fabric materials have a density of at least about 3 ounces per square yard.
Claim 5
Dependent Claim
33 words
The mat material of claim 3 wherein the first and second fabric materials comprise a theremoplastic polymer selected from the group consisting of ethylene, propylene, vinyl, polyester and polyamide based polymers and co-polymers.
Claim 6
Dependent Claim
33 words
The mat material of claim 4 wherein the interlocked fibers are meshed with the matrix of the sheet, the sheet and the first and second fabric materials comprising a single selected thermoplastic material.
Claim 7
Dependent Claim
34 words
The mat material of claim 5 wherein the thermoplastic material selected to comprise the sheet and the first and second fabric materials is selected from the group consisting of polypropylene, polyester, polyamides and copolyamides.
Claim 8
Dependent Claim
42 words
The mat material of claims 1, 5 and 6 as made by application of heat and pressure between the sheet and the fabric materials, the fabric materials laminated to either side of the sheet during extrusion between a pair of calnedar rolls.
Claim 9
Dependent Claim
69 words
The mat material of claims 1, 5 and 6 as made by laminating the fabric mateials to either side of the sheet between a pair of calendar rolls having a nip pressure of at least about 75 pounds per square inch, each calendar roll maintained at a temperature substantially below the melting point of the fabric material with which each such calendar roll comes in direct contact during lamination.
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) | 1990-06-15 | 1990-12-15 | 1991-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-15 | 1994-12-15 | 1995-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-15 | 1998-12-15 | 1999-06-16 | $7700.00 | Window Closed / Lapsed |