Metallic cap closure having water repelling properties and method of fabricating the same

a technology of metal caps and water repellent properties, which is applied in the field of closures or caps, can solve the problems of rusting metallic caps, unsatisfactory customer satisfaction, and cap oxidation problems, and achieve the effect of eliminating the current corrosion problem

US20050167392A1Inactive Publication Date: 2005-08-04FABS MONTERREY S A DE
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
Publication Date
2005-08-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

A metallic closure having water repelling properties, and methods of manufacturing the same, includes a metallic closure shell, as for example, the type used for crown caps or roll-on caps, and a non-wetting material layer deposited on at least a portion of an inside surface of the closure such that, when the closure is disposed over the rim and opening of a container, the opening is hermetically sealed and moisture is repelled from confined regions between an inside surface of the shell and an outside surface of the container.
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Description

BACKGROUND OF THE INVENTION

[0001] (1) Field of the Invention

[0002] The present invention relates to closures or caps used in containers designed to store and transport liquids in general and, more specifically, to a non-wetting metallic cap having water repelling characteristics. Hereinafter, the terms “closure,”“cap,”“crown cap,”“top,” or “crown top,” are used interchangeably as synonymous terms.

[0003] (2) Background of the Art

[0004] Bottles of many different shapes, sizes, and materials have been widely used for containing and transporting different types of liquids, including those for human consumption, such as, beer, soft drinks, water, juices, coolers, and milk, as well as liquids used for other purposes such as cleaners, raw materials used in different industrial processes, and the like. In many of these applications, a metallic cap, or top, is provided for adequately sealing the contents of the bottle in order to prevent leakage to the outside as well as contamination by...

Examples

Embodiment Construction

[0017]FIG. 1 illustrates a first embodiment of a metallic crown cap, or top, 10 having water repelling characteristics, the crown cap 10 comprising a metallic element 11 having a top portion 12, an under portion 14, and a corrugated skirt 16 with a plurality of skirt corrugations 18. Before labels and / or text is imprinted on the cap, a layer of a non-wetting primer material 22 is applied to the interior surface 14 of the metallic element 11, on top of which a subsequent liner 24 may also be applied. The general process after imprinting brand names or other indicia is to form the cap shell in punching presses. Then the liner, whatever its composition might be, is applied to the interior of the crown shell. In some cases a cure operation is necessary to get the correct adhesion of the liner to the crown shell. Although a crown cap having a liner has been illustrated, the present invention is equally applicable to a linerless crown cap.

[0018] In use, the metallic crown cap 10 is insta...