US4680215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mesh structure and laminate made therewith
Assignee: PLG Research Ltd
•
Filing: 1986-08-06
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Granted: 1987-07-14
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Expires: 2006-08-06
Abstract
Abstract In order to produce a biaxially orientated mesh structure using a single axis draw, a plastics material starting material has parallel, side-by-side main zones separated by lines of holes or depressions; the starting material is drawn parallel to the main zones, stretching the main zones into continuous, orientated main strands 4 interconnected by smaller cross-section strands 6 which have been formed from the zones between holes or depressions in each line, and have been orientated at right angles to the direction of drawing by the effect of the main zones decreasing in width as they were stretched. The mesh structure is suitable for cross-lamination.
Inventors
- 👤 Frank B. Mercer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:52
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B29; B29D; B29D28/00; B32B3/00; B32B3/26; B32B2305/00; B32B2305/38; Y; Y10; Y10S; Y10S264/00; Y10S264/47; Y10S264/81; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T442/00; Y10T442/10; Y10T442/184
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
197 words
An integral, biaxially-molecularly-orientated mesh structure, comprising: continuous, substantially parallel, molecularly-uniaxially-orientated main strands with the orientation therein extending substantially uniformly from end to end and generally parallel to said main strands, said main strands being of substantially rectangular cross-section with their width substantially greater than their thickness; and discontinuous, uniaxially-molecularly-orientated interconnecting strands with the orientation therein extending generally parallel to the direction of said interconnecting strands, said interconnecting strands extending in a direction generally at right angles to said main strands and interconnecting said main strands at a plurality of positions spaced along the edge of each said main strand, each said interconnecting strand being generally symmetrical about a line at right angles to said main strands, to thereby define a generally regular mesh structure having generally four-sided mesh openings, each said mesh opening being defined by two said main strands and two said interconnecting strands, and the cross-sectional area at the mid-points of said interconnecting strands being less than the minimum cross-sectional area of said main strands; there being adjacent each end of each said interconnecting strand a zone of plastics material which is thicker than the material of the remainder of the respective said interconnecting strand.
Claim 2
Dependent Claim
197 words
An integral, biaxially-molecularly-orientated mesh structure, comprising: continuous, substantially parallel, molecularly-uniaxially-orientated main strands with the orientation therein extending substantially uniformly from end to end and generally parallel to said main strands, said main strands being of substantially rectangular cross-section with their width substantially greater than their thickness; and discontinuous, uniaxially-molecularly-orientated interconnecting strands with the orientation therein extending generally parallel to the direction of said interconnecting strands, said interconnecting strands extending in a direction generally at right angles to said main strands and interconnecting said main strands at a plurality of positions spaced along the edge of each said main strand, each said interconnecting strand being generally symmetrical about a line at right angles to said main strands, to thereby define a generally regular mesh structure having generally four-sided mesh openings, each said mesh opening being defined by two said main strands and two said interconnecting strands, and the cross-sectional area at the mid-points of said interconnecting strands being less than the minimum cross-sectional area of said main strands; there being adjacent each end of each said interconnecting strand a zone of plastics material which is thicker than the material of the remainder of the respective said interconnecting strand.
Claim 3
Dependent Claim
14 words
The mesh structure of claim 1, wherein said plastics material zones are substantially unorientated.
Claim 4
Dependent Claim
26 words
The mesh structure of claim 1, wherein said plastics material zones are less orientated than the material of the remainder of the respective said main strand.
Claim 5
Dependent Claim
26 words
The mesh structrue of claim 1, wherein said plastics material zones are less orientated than the material of the remainder of the respective said interconnecting strand.
Claim 6
Dependent Claim
30 words
The mesh structure of claim 1, wherein the major part of the thickness of each said interconnecting strand is between planes defined by the outer faces of said main strands.
Claim 7
Dependent Claim
25 words
The mesh structure of claim 1, wherein the median plane of each said interconnecting strand is substantially on the median plane of said main strands.
Claim 8
Dependent Claim
27 words
The mesh structure of claim 1, wherein the median plane of each said interconnecting strand is between planes defined by the outer faces of said main strands.
Claim 9
Dependent Claim
33 words
The mesh structure of claim 1, wherein the ratio of the width of the thickness of said main strands is at least 5:1, as measured at the narrowest parts of said main strands.
Claim 10
Dependent Claim
33 words
The mesh structure of claim 1, wherein the ratio of the width to the thickness of said main strands is at least 20:1, as measured at the narrowest parts of said main strands.
Claim 11
Dependent Claim
50 words
The mesh structure of claim 1, bonded to another mesh structure of claim 1, thereby forming a laminate comprising a first mesh structure and a second mesh structure, said main strands of said first mesh structure extending generally at right angles to said main strands of said second mesh structure.
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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) | 1990-07-13 | 1991-01-12 | 1991-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-13 | 1995-01-12 | 1995-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-13 | 1999-01-12 | 1999-07-14 | $7700.00 | Window Closed / Lapsed |