US4684570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microfine fiber laminate
Assignee: JPMorgan Chase Bank NA
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Filing: 1986-04-07
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Granted: 1987-08-04
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Expires: 2006-04-07
Abstract
Abstract A water impervious laminated material is described. A preferred embodiment comprises a three-ply hydrophobic microfine fiber structure sandwiched between and fuse bonded to two layers of conjugate fibers having a low melting sheath and a high melting core. The inner ply of the hydrophobic microfine fiber structure is relatively high melting while the two outer plies of the hydrophobic micofine fiber structure film are low melting. The sheaths of the conjugate fibers have been fuse bonded to the hydrophobic microfine fiber structure at a temperature below the melt temperature of the cores of the conjugate fibers so that the cores retain their initial fiber-like integrity.
Inventors
- 👤 Frank E. Malaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:55
CPC Classifications
A; A61; A61B; A61B46/00; A61B46/40; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24826; Y10T428/24942; Y10T442/00; Y10T442/60; Y10T442/608; Y10T442/614; Y10T442/621; Y10T442/637; Y10T442/641; Y10T442/659; Y10T442/668
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
193 words
A water impervious laminated material comprising at least one layer of conjugate fibers, said layer of conjugate fibers having a first face and an opposite face, said conjugate fibers being composed of a lower melting component and a higher melting component, wherein a substantial proportion of the surfaces of said conjugate fibers comprises said lower melting component, said lower melting component of said conjugate fibers which lie on said first face being area fuse bonded to a first ply of a hydrophobic structure comprising multiple thermoplastic plies of microfine fibers having a fiber diameter of up to 10 microns, which structure comprises said first ply and at least one additional ply, said first ply of said hydrophobic microfine fiber structure possessing a lower melt temperature than said additional ply of said hydrophobic microfine fiber structure, said lower melting component of said conjugate fibers having been fuse bonded at a temperature below the melt temperature of said higher melting component of said conjugate fibers so that the latter component retains its initial fiber-like integrity, said first ply of said microfine fiber structure having melt compatibility with said lower melting component of said conjugate fibers.
Claim 2
Dependent Claim
193 words
A water impervious laminated material comprising at least one layer of conjugate fibers, said layer of conjugate fibers having a first face and an opposite face, said conjugate fibers being composed of a lower melting component and a higher melting component, wherein a substantial proportion of the surfaces of said conjugate fibers comprises said lower melting component, said lower melting component of said conjugate fibers which lie on said first face being area fuse bonded to a first ply of a hydrophobic structure comprising multiple thermoplastic plies of microfine fibers having a fiber diameter of up to 10 microns, which structure comprises said first ply and at least one additional ply, said first ply of said hydrophobic microfine fiber structure possessing a lower melt temperature than said additional ply of said hydrophobic microfine fiber structure, said lower melting component of said conjugate fibers having been fuse bonded at a temperature below the melt temperature of said higher melting component of said conjugate fibers so that the latter component retains its initial fiber-like integrity, said first ply of said microfine fiber structure having melt compatibility with said lower melting component of said conjugate fibers.
Claim 3
Dependent Claim
42 words
The material of claim 1, in which the melt temperature of the lower melting component of the conjugate fibers is no more than 35° C. higher or lower than the melt temperature of the first ply of the hydrophobic microfine fiber structure.
Claim 4
Dependent Claim
15 words
The material of claim 1, wherein the conjugate fiber is a polyethylene/polyester sheath/core bi-component fiber.
Claim 5
Dependent Claim
45 words
The material of claim 1, in which the first ply of the hydrophobic microfine fiber structure is selected from the group consisting of ethylene/vinyl acetate copolymer, polyethylene, chlorinated polyethylene and polyvinyl chloride and the additional ply of the hydrophobic microfine fiber structure comprises isotactic polypropyline.
Claim 6
Dependent Claim
40 words
The material of claim 1 in which said layer of conjugate fibers is blended with non-conjugate fusible fibers, with the proviso that said first face of said layer of conjugate fibers contains a plurality of conjugate fibers in said blend.
Claim 7
Dependent Claim
203 words
A water impervious laminated material comprising at least one layer of conjugate fibers, said layer of conjugate fibers having a first face and an opposite face, said conjugate fibers being composed of a lower melting component and a higher melting component, wherein a substantial proportion of the surfaces of said conjugate fibers comprises said lower melting component, said lower melting component of said conjugate fibers which lie on said first face being area fuse bonded to a first ply of a hydrophobic structure comprising multiple thermoplastic piles of microfine fibers having a fiber diameter of up to 10 microns, which structure comprises said first ply and at least one additional ply, said first ply of said hydrophobic microfine fiber structure possessing a lower melt temperature than said additional ply of said hydrophobic microfine fiber structure, said lower melting component of said conjugate fibers having been fuse bonded at a temperature below the melt temperature of said higher melting component of said conjugate fibers so that the latter component retains its initial fiber-like integrity, said fuse bonding having been carried out by heating said laminated material while it is held between two porous belts under light pressure so that area fuse bonding takes place.
Claim 8
Dependent Claim
203 words
A water impervious laminated material comprising at least one layer of conjugate fibers, said layer of conjugate fibers having a first face and an opposite face, said conjugate fibers being composed of a lower melting component and a higher melting component, wherein a substantial proportion of the surfaces of said conjugate fibers comprises said lower melting component, said lower melting component of said conjugate fibers which lie on said first face being area fuse bonded to a first ply of a hydrophobic structure comprising multiple thermoplastic piles of microfine fibers having a fiber diameter of up to 10 microns, which structure comprises said first ply and at least one additional ply, said first ply of said hydrophobic microfine fiber structure possessing a lower melt temperature than said additional ply of said hydrophobic microfine fiber structure, said lower melting component of said conjugate fibers having been fuse bonded at a temperature below the melt temperature of said higher melting component of said conjugate fibers so that the latter component retains its initial fiber-like integrity, said fuse bonding having been carried out by heating said laminated material while it is held between two porous belts under light pressure so that area fuse bonding takes place.
Claim 9
Dependent Claim
42 words
The material of claim 6 in which the melt temperature of the lower melting component of the conjugate fibers is no more than 35° C. higher or lower than the melt temperature of the first ply of the hydrophobic microfine fiber structure.
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) | 1990-08-03 | 1991-02-02 | 1991-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-03 | 1995-02-02 | 1995-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-03 | 1999-02-02 | 1999-08-04 | $7700.00 | Window Closed / Lapsed |