Patent US3933559A successfully refreshed from Google Patents.
US3933559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for manufacturing a body of moisture-proof container for packaging
Assignee: Dai Nippon Printing Co Ltd
•
Filing: 1973-12-26
•
Granted: 1976-01-20
•
Expires: 1993-12-26
Abstract
Abstract A process for manufacturing a body of a moisture-proof container having at least two recesses for packaging purposes which comprises adhering a metal foil to a first thermoplastic resin film with a hot melt-type adhesive to form a laminated sheet, forming at least two closed blank portions in said laminated sheet by cutting only the metal foil, adhering a second thermoplastic resin film on the surface of the metal foil and stretch-forming said closed blank portions of the laminated sheet at a temperature wherein the hot melt-type adhesive and the thermoplastic resin films are softened, thereby forming said recesses.
Inventors
- 👤 Tetsuo Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:13
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/14; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B29K; B29K2705/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1026; Y10T156/1043; Y10T156/1044; Y10T156/1048; Y10T156/1052; Y10T156/1062; Y10T156/1064
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
99 words
A process for manufacturing a body of a moisture-proof container having at least two recesses for packaging purposes which comprises adhering a metal foil to a first thermoplastic resin film with a hot melt-type adhesive to form a laminated sheet, forming at least two closed blank portions in said laminated sheet by cutting only the metal foil, adhering a second thermoplastic resin film on the surface of the metal foil and stretch-forming said closed blank portions of the laminated sheet at a temperature wherein the hot melt-type adhesive and the thermoplastic resin films are softened, thereby forming said recesses.
Claim 2
Dependent Claim
99 words
A process for manufacturing a body of a moisture-proof container having at least two recesses for packaging purposes which comprises adhering a metal foil to a first thermoplastic resin film with a hot melt-type adhesive to form a laminated sheet, forming at least two closed blank portions in said laminated sheet by cutting only the metal foil, adhering a second thermoplastic resin film on the surface of the metal foil and stretch-forming said closed blank portions of the laminated sheet at a temperature wherein the hot melt-type adhesive and the thermoplastic resin films are softened, thereby forming said recesses.
Claim 3
Dependent Claim
31 words
The process as claimed in claim 1 wherein the first and second thermoplastic resin films are selected from the group consisting of polyvinyl chloride, polyethylene, polyproylene, a polyester or a polycarbonate.
Claim 4
Dependent Claim
23 words
The process as claimed in claim 1, wherein the thickness of the first and second thermoplastic resin film is 100 - 500 μ.
Claim 5
Dependent Claim
25 words
The process as claimed in claim 1, wherein the metal foil is a film selected from the group consisting of aluminium, tin, copper and iron.
Claim 6
Dependent Claim
19 words
The process as claimed in claim 1 wherein the thickness of the metal foil is 30 - 150 μ.
Claim 7
Dependent Claim
35 words
The process as claimed in claim 1 wherein the hot melt type adhesive comprises a main component selected from the group consisting of ethylenevinylacetate copolymer, polyvinyl acetate, polyvinylbutyral, polyethylene and a polyamide and an additive.
Claim 8
Dependent Claim
23 words
The process of claim 6, wherein the additive is selected from the group consisting of a rosin, an ester gum and a paraffin.
Claim 9
Dependent Claim
21 words
The process as claimed in claim 1 wherein the thickness of the hot melt type adhesive is 3 - 30 μ.
Claim 10
Dependent Claim
21 words
The process of claim 1, wherein the thickness of the first and second thermoplastic resin film is 150 - 300 microns.
Claim 11
Dependent Claim
21 words
The process of claim 1, wherein the thickness of the first and second thermoplastic resin film is 150 - 200 microns.
Claim 12
Dependent Claim
17 words
The process of claim 1, wherein the thickness of the metal foil is 40 - 70 microns.
Claim 13
Dependent Claim
18 words
The process of claim 1, wherein the thickness of the hot melt-type adhesive is 10 - 15 microns.
Claim 14
Dependent Claim
35 words
The process of claim 1, wherein a third thermoplastic resin film is adhered to the second thermoplastic film and the blank portions are made by cutting the metal foil and the second thermoplastic resin film.
Claim 15
Dependent Claim
37 words
The process of claim 1, wherein the second thermoplastic resin film is adhered to the metal foil with an adhesive selected from the group consisting of a saturated polyester type adhesive and a saturated polyester-isocyanate type adhesive.
Claim 16
Dependent Claim
16 words
The process of claim 14, wherein the thickness of the adhesive is 10 - 15 microns.
References Cited (Backward Citations)
US2618381A
Cited
US3371404A
Cited
US3145112A
Cited
US3311229A
Cited
US3331495A
Cited
US3778323A
Cited
US3645822A
Cited
US3780856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |