US4534995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for coating containers
Assignee: Silgan Plastics Corp
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Filing: 1984-04-05
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Granted: 1985-08-13
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Expires: 2004-04-05
Abstract
Abstract A method for treating plastic containers with a resin to improve barrier properties thereof including conditioning with an ionizing gas, dipping container in latex of barrier resin and drying container including removing drop from bottom thereof. Apparatus for carrying out the process is shown.
Inventors
- 👤 John F. E. Pocock
- 👤 Charles A. Cole
- 👤 James G. Villanueva
- 👤 John D. Matlack
- 👤 Shelton E. Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:06
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/18; B05D3/00; B05D3/04; B05D3/0406; B05D7/00; B05D7/02; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J2367/00; C08J2367/02; C08J2427/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A method of applying a polyvinylidene chloride barrier resin coating to a polyethylene terephthalate preform comprising neutralizing the static charge on said preform by conditioning said preform with ionized air, dipping said preform into a dispersion or latex of said polyvinylidene chloride over a period of 1 to 3 seconds to coat at least the lower two-thirds of said preform, removing said preform from said dispersion or latex over a period of 7 to 14 seconds, drying said coating, and removing the drip which forms on the bottom of the coated preform during said drying step.
Claim 2
Independent Claim
96 words
A method of applying a polyvinylidene chloride barrier resin coating to a polyethylene terephthalate preform comprising neutralizing the static charge on said preform by conditioning said preform with ionized air, dipping said preform into a dispersion or latex of said polyvinylidene chloride over a period of 1 to 3 seconds to coat at least the lower two-thirds of said preform, removing said preform from said dispersion or latex over a period of 7 to 14 seconds, drying said coating, and removing the drip which forms on the bottom of the coated preform during said drying step.
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) | 1988-08-12 | 1989-02-11 | 1989-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-12 | 1993-02-11 | 1993-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-12 | 1997-02-11 | 1997-08-13 | $7700.00 | Window Closed / Lapsed |