US4454184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet material comprising layers of aligned strands completely surrounded by adhesive
Assignee: Individual
•
Filing: 1982-03-09
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Granted: 1984-06-12
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Expires: 2002-03-09
Abstract
Abstract A sheet material comprises at least three superposed layers (11, 12, 13, 14) each consisting of a plurality of strands (11a, 12a, 13a, 14a) disposed in and completely surrounded by a mass of adhesive so that individual strands of each layer adhere to one another and adjacent layers adhere to each other. Strands in adjacent layers are transversely, and preferably perpendicularly, arranged. A preferred adhesive is curable polyvinyl chloride. Strands in non-adjacent layers may be substantially aligned or may be offset. Strands may have a non uniform or uniform spacing and may be of the same or differing decitex. Material is made by embedding strands in adhesive, placing layers so formed together and thereafter curing the adhesive. The material has greater tear strength in at least one direction than conventional plastics coated woven material having the same yarn content.
Inventors
- 👤 Arthur Britton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:57
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/20; B29C70/202; B32B27/00; B32B27/06; B32B27/08; B32B27/18; B32B27/20; B32B27/22; B32B27/30; B32B27/304; B32B27/40; B32B37/00; B32B37/12; B32B5/02; B32B5/12; B32B7/00; B32B7/03; B32B7/04; B32B7/12; B63; B63H; B63H9/00; B63H9/04; B63H9/06; B63H9/067; D; D04; D04H; D04H3/00; D04H3/02; D04H3/04; D04H3/045; D04H3/08; D04H3/12; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/244; D06M15/37; D06M15/61; D06M17/00; D06M17/04; D06M17/06; E; E04; E04H; E04H15/00; E04H15/32; E04H15/54; B32B2262/00; B32B2262/02; B32B2262/0261; B32B2307/00; B32B2307/50; B32B2307/54; B32B2307/546; B32B2307/582; B32B2307/5825; B32B2307/70; B32B2307/718; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24091; Y10T428/24099; Y10T428/24132; Y10T428/249921; Y10T428/249924; Y10T428/24994
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
168 words
A sheet material comprising a first layer having a plurality of aligned spaced apart strands disposed in and completely surrounded by a mass of an adhesive, a second layer having a plurality of aligned spaced apart strands disposed in and completely surrounded by a mass of an adhesive, superposed on the first layer with its strands lying transverse to the strands of the first layer and a third layer having a plurality of aligned spaced apart strands disposed in and completely surrounded by a mass of an adhesive with its strands disposed transversely to the strands in the second layer, wherein said strand is of spun fibers, one or more continuous filaments or a mixture thereof, the superposition being such that the overall length of each strand remains substantially unchanged, whereby to produce, for a given weight per unit area of material, a material of greater tear strength in at least one direction than a synthetic plastics material coated textile material woven from strands of the same material.
Claim 2
Dependent Claim
168 words
A sheet material comprising a first layer having a plurality of aligned spaced apart strands disposed in and completely surrounded by a mass of an adhesive, a second layer having a plurality of aligned spaced apart strands disposed in and completely surrounded by a mass of an adhesive, superposed on the first layer with its strands lying transverse to the strands of the first layer and a third layer having a plurality of aligned spaced apart strands disposed in and completely surrounded by a mass of an adhesive with its strands disposed transversely to the strands in the second layer, wherein said strand is of spun fibers, one or more continuous filaments or a mixture thereof, the superposition being such that the overall length of each strand remains substantially unchanged, whereby to produce, for a given weight per unit area of material, a material of greater tear strength in at least one direction than a synthetic plastics material coated textile material woven from strands of the same material.
Claim 3
Dependent Claim
26 words
A sheet material as claimed in claim 1, in which the aligned strands in one or more of the layers are substantially parallel along their length.
Claim 4
Dependent Claim
29 words
A sheet material as claimed in claim 1, in which the strands in each layer are disposed at right angles to the strands in the or each adjacent layer.
Claim 5
Dependent Claim
18 words
A sheet material as claimed in claim 1, in which the adhesive is a curable synthetic plastics material.
Claim 6
Dependent Claim
17 words
A sheet material as claimed in claim 4, in which the synthetic plastics material is polyvinyl chloride.
Claim 7
Dependent Claim
16 words
A sheet material as claimed in claim 4, in which the synthetic plastics material is polyurethane.
Claim 8
Dependent Claim
34 words
A sheet material as claimed in claim 4, in which the synthetic plastics material includes a plasticiser or a heat stabiliser or a light stabiliser or a colouring pigment or any multiple combination thereof.
Claim 9
Dependent Claim
14 words
A sheet material as claimed in claim 1, in which the adhesive is rubber.
Claim 10
Dependent Claim
39 words
A sheet material as claimed in claim 1, in which the strands in two non-adjacent layers run in substantially the same direction and the strands in one of the layers are aligned with respective strands in the other layer.
Claim 11
Dependent Claim
39 words
A sheet material as claimed in claim 1, in which the strands in two non-adjacent layers run in substantially the same direction and the strands in one layer are offset in relation to the strands in the other layer.
Claim 12
Dependent Claim
18 words
A sheet material as claimed in claim 1, in which the strands in each layer are uniformly spaced.
Claim 13
Dependent Claim
19 words
A sheet material as claimed in claim 1, in which the strands in each layer are non uniformly spaced.
Claim 14
Dependent Claim
18 words
A sheet material as claimed in claim 1, in which the strands are all of the same decitex.
Claim 15
Dependent Claim
22 words
A sheet material as claimed in claim 1, in which the strands in any one layer are all of the same decitex.
Claim 16
Dependent Claim
20 words
A sheet material as claimed in claim 1, in which the strands in any one layer are of differing decitex.
References Cited (Backward Citations)
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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) | 1987-06-12 | 1987-12-12 | 1988-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-12 | 1991-12-12 | 1992-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-12 | 1995-12-12 | 1996-06-12 | $7700.00 | Window Closed / Lapsed |