US4526832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antistatic packaging material and steel substrates packaged therewith
Assignee: United States Department of the Navy
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Filing: 1983-09-21
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Granted: 1985-07-02
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Expires: 2003-09-21
Abstract
Abstract A novel antistatic packaging material and method employing a F+-implanted electractive polymer are described. The implanted polymer contacts the surface of the substrate and conducts away any static charge that may exist upon the substrate.
Inventors
- 👤 Marianne K. Bernett
- 👤 David C. Weber
- 👤 Harold Ravner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:20
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/125; B32B1/00; B32B27/28; B32B27/286; B32B27/30; B32B27/308; B32B27/32; H01B1/128; B32B2307/00; B32B2307/20; B32B2307/21; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49702; Y10T29/53; Y10T29/53104; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/27; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31924; Y10T428/31928
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
46 words
An antistatic packaging material comprising an inert, flexible, impervious electroactive polymer film having an F + -implanted surface with a surface resistivity of no more than about 10 12 ohms/sq. and an opposite surface also having a surface resistivity no greater than about 10 12 ohms/sq.
Claim 2
Dependent Claim
46 words
An antistatic packaging material comprising an inert, flexible, impervious electroactive polymer film having an F + -implanted surface with a surface resistivity of no more than about 10 12 ohms/sq. and an opposite surface also having a surface resistivity no greater than about 10 12 ohms/sq.
Claim 3
Dependent Claim
25 words
The material of claim 1 wherein said electroactive polymer is selected from the group consisting of F + -implanted polyacetylene, ethylene/methacrylic copolymers and paraphenylene sulfide.
Claim 4
Dependent Claim
25 words
The material of claim 2 wherein said electroactive polymer has a band of F + ions centered at about 300 angstroms beneath said implanted surface.
Claim 5
Dependent Claim
17 words
The material of claim 3 wherein said band of F + ions is about 400 angstroms wide.
Claim 6
Dependent Claim
22 words
The material of claim 4 wherein the maximum concentration of F + ions in said implanted region is about 20-60 atomic percent.
Claim 7
Dependent Claim
22 words
The material of claim 5 wherein the maximum concentration of F - ions in said implanted region is about 20-50 atomic percent.
Claim 8
Dependent Claim
21 words
The material of claim 6 comprising a polypropylene backing, the outer surface of which comprises said opposite surface of said film.
Claim 9
Dependent Claim
14 words
The material of claim 2 wherein said electroactive polymer is F + -implanted polyacetylene.
Claim 10
Dependent Claim
28 words
The material of claim 8 wherein said electroactive polymer has a band of F + ions centered at about 300 angstroms beneath said implanted surface of said polymer.
Claim 11
Dependent Claim
17 words
The material of claim 9 wherein said band of F + ions is about 400 angstroms wide.
Claim 12
Dependent Claim
22 words
The material of claim 10 wherein the maximum concentration of F + ions in said implanted region is about 20-60 atomic percent.
Claim 13
Dependent Claim
22 words
The material of claim 11 wherein the maximum concentration of F + ions in said implanted region is about 20-50 atomic percent.
Claim 14
Dependent Claim
14 words
The material of claim 12 comprising an inert, impervious, flexible backing polymer comprising polypropylene.
Claim 15
Dependent Claim
87 words
A substrate package comprising: a substrate comprising steel and one or more polymers, with each polymer being ion-implanted on its surface with F + ions to yield a surface resistivity at said polymer surface no greater than about 10 12 ohms/sq, said one or more F + ion implanted polymers being disposed such that the implanted surface thereof is in contact with said substrate so that any static charge that develops upon said substrate PG,33 transfers to said F + ion implanted polymer and is subsequently dissipated.
Claim 16
Dependent Claim
87 words
A substrate package comprising: a substrate comprising steel and one or more polymers, with each polymer being ion-implanted on its surface with F + ions to yield a surface resistivity at said polymer surface no greater than about 10 12 ohms/sq, said one or more F + ion implanted polymers being disposed such that the implanted surface thereof is in contact with said substrate so that any static charge that develops upon said substrate PG,33 transfers to said F + ion implanted polymer and is subsequently dissipated.
Claim 17
Dependent Claim
81 words
The substrate package of claim 14 wherein said polymer is selected from the group consisting essentially of polyactylene, ethylene methacrylic copolymers, and paraphenylene sulfide; said polymer having an F + ion implanted band of F + ions centered about 300 angstroms beneath said polymer's surface; said polymer having an F + ion implanted band of F + ions about 400 angstroms wide; and said F + ion implanted band having a concentration of F + ions of about 20-60 atomic percent.
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) | 1988-07-01 | 1988-12-31 | 1989-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-01 | 1992-12-31 | 1993-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-01 | 1996-12-31 | 1997-07-02 | $7700.00 | Window Closed / Lapsed |