US4699830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated sheet material for packaging electronic components
Assignee: DRG Medical Packaging Inc
•
Filing: 1986-06-30
•
Granted: 1987-10-13
•
Expires: 2006-06-30
Abstract
Abstract A laminated sheet material which can be used to form packages or envelopes for electrically sensitive components. The laminated sheet material includes an antistatic layer providing a surface resistivity in the range from about 10 8 to about 10 13 ohms per square. A first conductive metal layer is adhered to the antistatic layer and provides a surface resistivity of less than about 10 5 ohms per square. A carrier film layer is adhered to the first conductive metal layer. A second conductive metal layer is adhered to the carrier film layer. A transparent, protective topcoat layer is adhered to the second conductive metal layer for protecting the second conductive metal layer from abrasion and oxidation and for maintaining the outer surface resistivity of the combined clear protective layer and second conductive metal layer in the range from about 10 4 to about 10 8 ohms per square.
Inventors
- 👤 Creighton A. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:33
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B15/085; B32B15/09; B32B27/00; B32B27/32; B32B27/36; B32B7/00; B32B7/04; B32B7/12; H; H10; H10W; H10W42/00; H10W42/60; B32B2307/00; B32B2307/20; B32B2307/21; B32B2307/30; B32B2307/31; B32B2311/00; B32B2311/24; B32B2323/00; B32B2367/00; B32B2439/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1338; Y10T428/24; Y10T428/24942; Y10T428/31504; Y10T428/31507; Y10T428/31678; Y10T428/31681; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
138 words
A laminated sheet material for forming packaging for electrically sensitive components, the laminated sheet material comprising: an antistatic layer providing a surface resistivity in the range from about 10 8 to about 10 13 ohms per square; a first conductive metal layer adhered to the antistatic layer and having a surface resistivity of less than about 10 5 ohms per square; a carrier film layer adhered to the first conductive metal layer; a second conductive metal layer adhered to the carrier film layer; and a clear protective layer adhered to the second conductive metal layer for protecting the second conductive metal layer from abrasion and oxidation and for maintaining the outer surface resistivity of the combined second conductive metal layer and clear protective layer in the range from about 10 4 to about 10 8 ohms per square.
Claim 2
Dependent Claim
138 words
A laminated sheet material for forming packaging for electrically sensitive components, the laminated sheet material comprising: an antistatic layer providing a surface resistivity in the range from about 10 8 to about 10 13 ohms per square; a first conductive metal layer adhered to the antistatic layer and having a surface resistivity of less than about 10 5 ohms per square; a carrier film layer adhered to the first conductive metal layer; a second conductive metal layer adhered to the carrier film layer; and a clear protective layer adhered to the second conductive metal layer for protecting the second conductive metal layer from abrasion and oxidation and for maintaining the outer surface resistivity of the combined second conductive metal layer and clear protective layer in the range from about 10 4 to about 10 8 ohms per square.
Claim 3
Dependent Claim
18 words
A laminated sheet material as recited in claim 1 wherein the antistatic layer comprises a heat sealable material.
Claim 4
Dependent Claim
18 words
A laminated sheet material as recited in claim 2 wherein the antistatic layer comprises a polyolefin based material.
Claim 5
Dependent Claim
36 words
A laminated sheet material as recited in claim 1 wherein the first conductive metal layer, carrier layer, and second conductive metal layer have a combined light transmission in the range from about 15% to about 70%.
Claim 6
Dependent Claim
36 words
A laminated sheet material as recited in claim 4 wherein the first conductive metal layer, carrier layer, and second conductive metal layer have a combined light transmission in the range from about 30% to about 45%.
Claim 7
Dependent Claim
23 words
A laminated sheet material as recited in claim 1 wherein the first conductive metal layer comprises a continuous layer of a conductive metal.
Claim 8
Dependent Claim
33 words
A laminated sheet material as recited in claim 6 wherein the conductive metal is selected from the group consisting of aluminum, nickel, cadmium, tin, chrome, lead, copper, zinc, and compounds and mixtures thereof.
Claim 9
Dependent Claim
14 words
A laminated sheet material as recited in claim 7 wherein the metal is aluminum.
Claim 10
Dependent Claim
26 words
A laminated sheet material as recited in claim 1 wherein the first conductive metal layer has a surface resistivity less than 10 2 ohms per square.
Claim 11
Dependent Claim
29 words
A laminated sheet material as recited in claim 1 wherein the carrier layer comprises a transparent polymeric material selected from the group consisting of polyester, polycarbonate, polypropylene, and nylon.
Claim 12
Dependent Claim
15 words
A laminated sheet material as recited in claim 10 wherein the carrier layer comprises polyester.
Claim 13
Dependent Claim
26 words
A laminated sheet material as recited in claim 10 wherein the carrier layer has a thickness in the range from about 0.0025 to about 0.002 inches.
Claim 14
Dependent Claim
22 words
A laminated sheet material as recited in claim 1 wherein the second conductive metal layer comprises a continuous layer of conductive metal.
Claim 15
Dependent Claim
34 words
A laminated sheet material as recited in claim 13 wherein the conductive metal layer is selected from the group consisting of aluminum, nickel, cadmium, tin, chromium, lead, copper, zinc, and compounds and mixtures thereof.
Claim 16
Dependent Claim
15 words
A laminated sheet material as recited in claim 14 wherein the conductive metal comprises aluminum.
Claim 17
Dependent Claim
31 words
A laminated sheet material as recited in claim 13 wherein the second conductive metal layer and protective layer provide a surface resistivity of less than about 10 5 ohms per square.
Claim 18
Dependent Claim
18 words
A laminated sheet material as recited in claim 16 wherein the protective layer comprises an acrylic based coating.
Claim 19
Dependent Claim
18 words
A laminated sheet material as recited in claim 16 wherein the protective layer comprises a polyester based coating.
Claim 20
Dependent Claim
35 words
A laminated sheet material as recited in claim 1 further comprising an adhesive layer between the antistatic layer and the first conductive metal layer for bonding the antistatic layer to the first conductive metal layer.
Claim 21
Dependent Claim
19 words
A laminated sheet material as recited in claim 19 wherein the adhesive layer comprises a thermoplastic pressure/heat sensitive adhesive.
Claim 22
Dependent Claim
18 words
A laminated sheet material as recited in claim 20 wherein the adhesive layer comprises a urethane based adhesive.
Claim 23
Dependent Claim
18 words
A laminated sheet material as recited in claim 20 wherein the adhesive layer comprises an acrylic based adhesive.
Claim 24
Dependent Claim
34 words
An envelope formed from the laminated sheet material recited in claim 1 wherein the static layer comprises the inner surface of the envelope and is sealed to itself to provide closure of the envelope.
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) | 1990-10-12 | 1991-04-13 | 1991-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-12 | 1995-04-13 | 1995-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-12 | 1999-04-13 | 1999-10-13 | $7700.00 | Window Closed / Lapsed |