US4610352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonwoven fabric
Assignee: Fitesa Simpsonville Inc
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Filing: 1985-05-06
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Granted: 1986-09-09
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Expires: 2005-05-06
Abstract
Abstract Nonwoven fabrics are described comprising a layered fabric having an inner layer of substantially thermoplastic material, for example Nylon 6 fibers, disposed adjacent and recessed bonded to at least one outer layer or a pair of outer layers of textile length fibers by means of heat and pressure. The thermoplastic fibers in the inner layer have a lower melting point than the outer fibers in the fabric. A nonwoven fabric constructed in this manner has qualities of; low levels of debris, high compressibility, low abrasiveness, and dimensional stability. These qualities are decidedly of use in many products, most particularly as a liner in computer diskettes, wherein a liner material must be used to wipe the magnetic disk within the computer diskette to keep it free of foreign particles, which may cause errors in the transfer of information onto or from the magnetic disk.
Inventors
- 👤 Jon A. Howey
- 👤 Randall J. Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:59
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/08; D04H3/14; D04H1/00; D04H1/40; D04H1/54; D04H1/559; D04H1/542; D04H3/005; D04H3/013; D04H5/00; D04H5/06; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24612; Y10T428/24802; Y10T428/24826
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
42 words
A computer diskette liner material comprising; an inner layer of Nylon 6 thermoplastic fibers, and at least one outer layer of predominantly cellulosic textile length fibers, said inner and outer layers thermally bonded together in a plurality of recessed discrete bonding points.
Claim 2
Dependent Claim
42 words
A computer diskette liner material comprising; an inner layer of Nylon 6 thermoplastic fibers, and at least one outer layer of predominantly cellulosic textile length fibers, said inner and outer layers thermally bonded together in a plurality of recessed discrete bonding points.
Claim 3
Dependent Claim
22 words
The computer diskette liner material of claim 1 wherein said outer layer is comprised of 60-0% synthetic fibers and 40-100% cellulosic fibers.
Claim 4
Dependent Claim
21 words
The computer diskette liner material of claim 1 wherein all the fibers used in said material are substantially free of delusterant.
Claim 5
Dependent Claim
18 words
The computer diskette liner material of claim 1 wherein said material has at least a 75% void volume.
Claim 6
Dependent Claim
18 words
The computer diskette liner material of claim 1 wherein said material has 10-40% of its surface area bonded.
Claim 7
Dependent Claim
89 words
In a computer diskette having a plastic container, a nonwoven fabric liner disposed therein, and a flexible magnetic disk disposed thereon, in surface contact with said nonwoven liner, wherein the improvement comprises; a nonwoven liner having an inner layer of substantially low melting point thermoplastic Nylon 6 fiber; a void volume of at least 75%; a surface bonding of 10%-40%; and at least one outer layer of predominantly non-thermoplastic cellulosic textile length fibers, said inner and outer layer thermally bonded together in a plurality of recessed discrete bonding points.
Claim 8
Dependent Claim
89 words
In a computer diskette having a plastic container, a nonwoven fabric liner disposed therein, and a flexible magnetic disk disposed thereon, in surface contact with said nonwoven liner, wherein the improvement comprises; a nonwoven liner having an inner layer of substantially low melting point thermoplastic Nylon 6 fiber; a void volume of at least 75%; a surface bonding of 10%-40%; and at least one outer layer of predominantly non-thermoplastic cellulosic textile length fibers, said inner and outer layer thermally bonded together in a plurality of recessed discrete bonding points.
Claim 9
Dependent Claim
70 words
In a computer diskette having a plastic container, a nonwoven fabric liner disposed therein, and a flexible magnetic disk disposed thereon, in surface contact with said nonwoven liner, wherein the improvement comprises; a nonwoven liner having a homogeneous blend of Nylon 6 fibers and cellulosic fibers thermally bonded together in a plurality of recessed discrete bonding points; a void volume of at least 75%; and a surface bonding of 10%-40%.
Claim 10
Dependent Claim
70 words
In a computer diskette having a plastic container, a nonwoven fabric liner disposed therein, and a flexible magnetic disk disposed thereon, in surface contact with said nonwoven liner, wherein the improvement comprises; a nonwoven liner having a homogeneous blend of Nylon 6 fibers and cellulosic fibers thermally bonded together in a plurality of recessed discrete bonding points; a void volume of at least 75%; and a surface bonding of 10%-40%.
References Cited (Backward Citations)
US4211227A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-08 | 1990-03-10 | 1990-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-08 | 1994-03-10 | 1994-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-08 | 1998-03-10 | 1998-09-09 | $7700.00 | Window Closed / Lapsed |