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US4698254A
Expired / Lapsed
US
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Packaging laminate
Assignee: Crowell Corp
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Filing: 1986-12-12
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Granted: 1987-10-06
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Expires: 2006-12-12
Abstract
Abstract Packaging with a laminate of cushiony foam adhered to polyethylene terephthalate backing sheet which is metallized on both faces, or adhered to iron foil or to a sandwich of iron foils separated from each other by non-magnetic layer. Laminates can be formed into envelope. Exposed face of foam layer can carry antistat to keep static electricity from building up when article to be packaged is slid over that face.
Inventors
- 👤 Lewis R. Raszewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:02
CPC Classifications
B; B65; B65B; B65B9/00; B65B9/02; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/20; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/70; B29C66/71; B29C66/712; B29C66/72; B29C66/723; B29C66/7232; B29C66/72321; B29C66/727; B32; B32B; B32B37/00; B29C66/13; B29C66/135; B29K; B29K2105/00; B29K2105/04; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/249921; Y10T428/249953; Y10T428/249978; Y10T428/249982; Y10T428/249987; Y10T428/24999; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
77 words
A packaging laminate having a layer of cushiony foam about 1 to about 7 millimeters thick laminated to a metallized polyethylene terephthalate backing sheet not over about 25 microns thick, the backing sheet being metallized on both its faces to shield against external electrical influences, and the unlaminated face of the foam carrying a quantity of antistat sufficient to prevent the build-up of a damaging amount of static electricity when an object is slid over that face.
Claim 2
Dependent Claim
77 words
A packaging laminate having a layer of cushiony foam about 1 to about 7 millimeters thick laminated to a metallized polyethylene terephthalate backing sheet not over about 25 microns thick, the backing sheet being metallized on both its faces to shield against external electrical influences, and the unlaminated face of the foam carrying a quantity of antistat sufficient to prevent the build-up of a damaging amount of static electricity when an object is slid over that face.
Claim 3
Dependent Claim
14 words
The combination of claim 1 in which the backing sheet is 15-to-20 microns thick.
Claim 4
Dependent Claim
21 words
The combination of claim 1 in which the lamination of the foam to the backing sheet is with a pressure-sensitive laminant.
Claim 5
Dependent Claim
24 words
The combination of claim 1 in which the outer face of the backing sheet is grained to reduce the specularity of its metallized coating.
Claim 6
Dependent Claim
12 words
The laminate of claim 1 in the form of a packaging envelope.
Claim 7
Dependent Claim
13 words
A solid state electronic circuit board packaged in the envelope of claim 5.
Claim 8
Dependent Claim
39 words
A packaging laminate having a layer of cushiony foam about 1 to about 7 millimeters thick laminated to foil at least about 0.5 mil thick of a metal having a magnetic permeability and remanence approximating those of pure iron.
Claim 9
Dependent Claim
39 words
A packaging laminate having a layer of cushiony foam about 1 to about 7 millimeters thick laminated to foil at least about 0.5 mil thick of a metal having a magnetic permeability and remanence approximating those of pure iron.
Claim 10
Dependent Claim
25 words
The laminate of claim 7 in which the foil is divided into two layers each 1/2 to 1 mil thick separated by a non-magnetic gap.
References Cited (Backward Citations)
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US4321297A
Cited
US4584225A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-05 | 1991-04-06 | 1991-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-05 | 1995-04-06 | 1995-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-05 | 1999-04-06 | 1999-10-06 | $7700.00 | Window Closed / Lapsed |