US4084028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High strength laminate
Assignee: Individual
•
Filing: 1976-02-12
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Granted: 1978-04-11
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Expires: 1996-02-12
Abstract
Abstract A high strength laminate is formed of at least two films of polymeric material each having a predominant grain direction which films are arranged with their grain directions in intersecting or crossing relationship, each adjacent pair of such films being laminated together by an intermediate adhesive bonding layer, an array of filamentitious structures, e.g. parallel continuous filaments, staple fibers, or a split film network, which array has a generally predominating lengthwise direction being disposed within each such bonding layer with the lengthwise direction thereof oriented in an intersecting or crossing relation to the grain directions of both of the adjacent films, the filamentitious structures of such array being substantially free of any adhesive bonding with the intermediate adhesive layer and having a significant stretch capacity.
Inventors
- 👤 Ole-Bendt Rasmussen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:20
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B7/12; B32B27/00; B32B27/06; B32B27/08; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24124; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249942; Y10T428/249943; Y10T428/24995
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
100 words
A high strength laminate comprising at least two films of polymeric material, each having a predominant grain direction, arranged with said grain directions in intersecting relation, each adjacent pair of said films being laminated by an intermediate adhesive bonding layer, and an array of filamentitious structures having a generally predominate lengthwise direction disposed in each such bonding layer with said generally predominate lengthwise direction of said array extending in intersecting relation to the grain directions of both the adjacent films, said filamentitious structures being substantially free of adhesive bonding with said adhesive bonding layer and having a significant stretch capacity.
Claim 2
Dependent Claim
100 words
A high strength laminate comprising at least two films of polymeric material, each having a predominant grain direction, arranged with said grain directions in intersecting relation, each adjacent pair of said films being laminated by an intermediate adhesive bonding layer, and an array of filamentitious structures having a generally predominate lengthwise direction disposed in each such bonding layer with said generally predominate lengthwise direction of said array extending in intersecting relation to the grain directions of both the adjacent films, said filamentitious structures being substantially free of adhesive bonding with said adhesive bonding layer and having a significant stretch capacity.
Claim 3
Dependent Claim
17 words
The laminate of claim 1 wherein said filamentitious structures constitute about 1-25% by weight of said laminate.
Claim 4
Dependent Claim
28 words
The laminate of claim 1 wherein said filamentitious structures comprise parallel continuous filaments, staple fibers having a length of at least 0.5 cm, or a split film network.
Claim 5
Dependent Claim
26 words
The laminate of claim 1 wherein said filamentitious structures are coated with a slipping agent to reduce the adheisve bonding thereof with said adhesive bonding layer.
Claim 6
Dependent Claim
20 words
The laminate of claim 1 wherein said intermediate adhesive bonding layer has medium adhesive strength with the adjacent film surfaces.
Claim 7
Dependent Claim
32 words
The laminate of claim 1 wherein said filamentitious structures are comprised of a polymeric material having a higher melting point than the melting point of the polymeric material of said two films.
Claim 8
Dependent Claim
16 words
The laminate of claim 1 wherein said filamentitious structures are in the form of flat filaments.
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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) | 1981-04-10 | 1981-10-10 | 1982-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-10 | 1985-10-10 | 1986-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-10 | 1989-10-10 | 1990-04-11 | $7700.00 | Window Closed / Lapsed |