Patent US4196825A successfully refreshed from Google Patents.
US4196825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated collapsible tube
Assignee: Colgate Palmolive Co
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Filing: 1977-02-14
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Granted: 1980-04-08
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Expires: 1997-02-14
Abstract
Abstract A flexible dispensing tube is disclosed having a laminated plastic-metal-plastic wall, the metal layer having at least one irregular surface for improved deadfold at the folded bottom end.
Inventors
- 👤 Thomas R. Kincaid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:42
CPC Classifications
B; B65; B65D; B65D35/00; B65D35/02; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1036; Y10T156/1038
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A flexible walled dispensing tube having a discharge nozzle at one end and a relatively flat folded permanent closure joint at the other end, said tube having a laminated wall, said laminated wall including an inner thermoplastic layer, an intermediate metal layer and an outer thermoplastic layer, said metal layer being a thin sheet of bendable metal having an irregular surface at least in the lower region of said tube wall where said folded joint is formed, said irregular surface being bonded to said inner thermoplastic layer, the other side of said metal layer being smooth and continuous, said closure joint including a laminate of thermoplastic-metal-thermoplastic-thermoplastic-metal-thermoplastic, said adjacent thermoplastic layers being joined solely by a heat seal, each of said metal layers in said closure joint having at least one irregular surface said irregular surface comprising relatively closely spaced integral projections on the surface.
Claim 2
Dependent Claim
144 words
A flexible walled dispensing tube having a discharge nozzle at one end and a relatively flat folded permanent closure joint at the other end, said tube having a laminated wall, said laminated wall including an inner thermoplastic layer, an intermediate metal layer and an outer thermoplastic layer, said metal layer being a thin sheet of bendable metal having an irregular surface at least in the lower region of said tube wall where said folded joint is formed, said irregular surface being bonded to said inner thermoplastic layer, the other side of said metal layer being smooth and continuous, said closure joint including a laminate of thermoplastic-metal-thermoplastic-thermoplastic-metal-thermoplastic, said adjacent thermoplastic layers being joined solely by a heat seal, each of said metal layers in said closure joint having at least one irregular surface said irregular surface comprising relatively closely spaced integral projections on the surface.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-08 | 1983-10-08 | 1984-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-08 | 1987-10-08 | 1988-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-08 | 1991-10-08 | 1992-04-08 | $7700.00 | Window Closed / Lapsed |