Patent US3581690A successfully refreshed from Google Patents.
US3581690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crown type closure with double removable liner unit enclosing trapped indicia and method of manufacture
Assignee: Zapata Industries Inc
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Filing: 1968-12-16
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Granted: 1971-06-01
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Expires: 1988-12-16
Abstract
Abstract The closure cap or crown for bottles disclosed, comprises a crown shell having a print covered by a size coat, a removable liner unit including a first removable liner coating in the shell over the size coating carrying printed indicia, such as a question, and being either transparent or opaque, a second liner coating of transparent plastic material covering the first liner coating and the printed indicia thereon, and an annular sealing ring at the periphery of the second liner coating.
Inventors
- 👤 G Claudio Zapata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:38
CPC Classifications
G; G09; G09F; G09F23/00; B; B65; B65D; B65D41/00; B65D41/02; B65D41/10; B65D41/12; B65D51/00; B65D51/24; B65D51/245; G09F3/00; G09F3/08; G09F3/18; B65D2203/00; G09F2023/0025
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
170 words
In a method of making container closure caps of the type including a rigid shell provided with an adherent size coating on its inner surface, and a removable plastic sealing liner unit releasably secured to the size coating in the interior of the rigid shell, wherein the improvement comprises the steps of applying and curing a size coating on one surface of a sheet of material for making a multiplicity of closure caps, applying and curing a plastic coating film over said size coating, printing indicia on the film on said sheet at the locations for the caps, curing the printed indicia on said film, punching the closure caps from the sheet, applying and curing a transparent plastic coating film and integral sealing ring over the printed indicia and on the film on which it is located in each cap and adhering it thereto thereby trapping the printed indicia between said films, whereby caps are produced having readily removable liner units comprising indicia trapped and protected between the two films.
Claim 2
Dependent Claim
170 words
In a method of making container closure caps of the type including a rigid shell provided with an adherent size coating on its inner surface, and a removable plastic sealing liner unit releasably secured to the size coating in the interior of the rigid shell, wherein the improvement comprises the steps of applying and curing a size coating on one surface of a sheet of material for making a multiplicity of closure caps, applying and curing a plastic coating film over said size coating, printing indicia on the film on said sheet at the locations for the caps, curing the printed indicia on said film, punching the closure caps from the sheet, applying and curing a transparent plastic coating film and integral sealing ring over the printed indicia and on the film on which it is located in each cap and adhering it thereto thereby trapping the printed indicia between said films, whereby caps are produced having readily removable liner units comprising indicia trapped and protected between the two films.
Claim 3
Dependent Claim
53 words
A method as claimed in claim 1, including the step of curing the size coating by baking it at a temperature of from 395* to 405* F. for a period of about 10 minutes to give its outer surface of low adherent quality with respect to the plastic coating applied thereover when cured.
Claim 4
Dependent Claim
37 words
A method as claimed in claim 2, wherein the plastic coating applied over the cured size coating is baked and cured at a temperature of from 300* to 345* F. over a period of about 10 minutes.
Claim 5
Dependent Claim
75 words
A method as claimed in claim 1, including the step of printing indicia on said surface of the sheet of material at the locations of the shells prior to the step of applying the size coating, and wherein the plastic coating film over the size coating and over the said indicia is opaque and nonadherent to said size coating, whereby said indicia is made visible only after removing the liner units from the completed caps.
Claim 6
Dependent Claim
30 words
A method as claimed in claim 1, including the step of applying a ring of nonadherent material on the cured size coating directly beneath the position of the sealing ring.
Claim 7
Dependent Claim
33 words
A method as claimed in claim 5, wherein the ring or low adherent material is in the form of printed indicia made visible only after the liner unit is removed from the cap.
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |