Single piece plastic cap for PRY crown neck finish glass bottle

Abstract

The present invention relates to a single piece plastic cap substitute of 2-piece metal crown cap on pry crown glass bottle neck finish, the type constituted by plastic polymers, having a structural configuration which Favors the opening operation of the bottle by means of the removal of the plastic cap with an opener. Once opened counterfeit is impossible as the snap fit ring will detach from its main body.

Description

[0001] SINGLE PIECE PLASTIC CAP FOR PRY CROWN NECK FINISH GLASS BOTTLE

[0002] OBJECTIVE OF THE INVENTION

[0003] The invention, a substitute of 2-piece metal crown (metal + liner) cap by a single plastic cap for the pry crown neck finish glass bottles. Presents particularly of having a structural configuration which favors the sealing of the medium range carbonated liquid inside the bottle as well still water on pry crown profile neck finishes. The opening operation of the bottle by means of removal requiring an opener but the unique feature will be a tamper evident snap ring detaches from the cap body Signifies tamperproof & further can't be reused. The shape of the caps designed in such a way that can't be opened manually by pulling in naked hand or any tool without destroying the temper evident snap ring.

[0004] The field of application of the present invention is encompassed within the sector of the industry dedicated to the manufacturing of plastic caps for pry crown neck finish glass bottles. The invention also relates to a method for manufacturing the caps by Injection molding, by injection -compression molding or by compression molding process. The invention also relates to mould for making this cap for the pry crown neck finish glass bottles & similar shape of neck with wedge & bead.

[0005] BACKGROUND OF THE INVENTION

[0006] As is known, present metal crown caps application is not so easy to control glass bottle chip off while crimping & its uncontrolled threat to fall small glass chips inside container. Wide use of sustainable plastic caps (single piece polymer) & easy availability in the market along with cost effective & a substitute required was lacking from the inception of metal crown caps. (Two piece - metal crown & liner)

[0007] Innovated for the first time for the pry crown glass bottles with following features.

[0008] Single piece plastic cap for pry crown glass bottles neck finish

[0009] Can retain gas pressure inside the bottle

[0010] Temper proof design unable to counter fit.

[0011] While pull out or by bottle opener, snap ring will detach at slitting

[0012] Substitute for metal crown with liner cap

[0013] Sustainable with light weight & made of single polymer

[0014] Gas leak occurs after breaking of bridges onlyDESCRIPTION OF THE INVENTION

[0015] Thus, the single piece plastic cap object of the present invention, is preferably constituted from plastic material with inside having bore plug seal and side seal to prevent the gas leak and locking of the snap ring on the neck finish.

[0016] Even though containers and caps currently available provide high reliability in terms of opening and closing functionality for consumers and cap application functionality for the alco beverage and beverage Producer. There is still a need for improving how the cap is shaped to achieve even better functionality with snap fit design and also to reduce the amount of material needed for producing the caps & its sustainability.

[0017] Cap application in an Alco-Beverage and beverage product filling machine if often made at very high speeds. Since failed cap application is likely to result in unwanted secondary effects. Such as glass chip off due to crown crimping, filling machine down time or increased product waste, the cap should also be shaped such that the filling machine, sometimes referred as the packaging machine, can reliably apply the cap onto a package smoothly. SUMMARY

[0018] It is an object of the invention to at least partly overcome one or more of the aboveidentified limitations of the prior art. In particular, it is an object in form of a cap that provides proper snap fit closing functionality for a consumer as well as offers reliable cap application in a filling machine.

[0019] Accord to a first aspect it is provided a single piece plastic cap for sealing a container by applying the top load on to the cap into a neck of the pry crown glass bottle. The cap compromises a top portion having an outer top surface & an inner wall surface, a cylindrical side wall portion having an outer side wall surface along the locking snap ring, the snap ring is configured to remain attached to the neck of the glass wedge and above the bead even when the cap is opened by an opener. Which locks the glass bottle neck profile with radially locking by side seals on the outside wall of the top corner and bore plug seals the inner wall of cylindrical glass surface. The cap includes a joining zone, where the temper evident snap is joined to the cap body. The joining zone is configured to be torn at least partly along a perimeter surrounding the longitudinal axis responsive to a displacement of the body away from the snap ring. It should be noted that the perimeter surrounding the longitudinal axis is preferably circular.

[0020] Secondly an advantage with the seals helps to restrict the inside gas volume leakage as well surrounding air entry inside of the package, both via the interaction between the side seal & bore seal annular sealing protrusion & the neck. As an effect the risk of having unwanted microorganisms entering into the package is also restricted.

[0021] Thirdly the locking snap ring of cap also lapped with neck profile to hold & proper sealing of the main seal & side seal without interfering the bottle inner top corner. Still otherobjectives, features, aspects and advantages of the invention will appear from the following detailed description as well as from the drawings.

[0022] BRIEF DESCRIPTIONS OF THE DRAWING

[0023] Embodiments of the invention will now be described, by the way of example, with reference to the accompanying schematic drawing in which

[0024] Fig. 1 is a prospective view of the single piece plastic cap.

[0025] Fig. 2 is side view of the plastic cap

[0026] Fig. 3 is Bottom view of the plastic cap

[0027] Fig. 4 illustrate the top view of the plastic cap

[0028] Fig. 5 illustrate the cross sectional view of the plastic cap along with the part descriptions Fig. 6 illustrates the plastic cap and a glass neck bottle in assembled condition

[0029] Fig. 7 illustrates the plastic cap detached from its snap fit ring after Opening

[0030] FIGURE 1

[0031]

[0032] FIGURE 2

Claims

AMENDED CLAIMSreceived by the International Bureau on 13 June 2026 (13.06.2026)1. A single-piece plastic snap-fit closure for a pry crown neck finish glass bottle, comprising: a top wall (1);a cylindrical side wall (2) extending from the top wall;a locking snap ring (3) positioned adjacent a lower portion of the cylindrical side wall and comprising an inwardly projecting retaining portion configured to engage beneath a wedge and bead portion of the pry crown neck finish;a bore plug seal (4, 4.1) projecting from an inner surface of the top wall and dimensioned and arranged to sealingly engage an inner surface of the bottle neck; and a side seal (5, 5.1) positioned radially outward of the bore plug seal and dimensioned and arranged to sealingly engage an outer sealing surface of the bottle neck, wherein the bore plug seal and the side seal simultaneously engage respective inner and outer surfaces of the bottle neck to form independent inner and outer sealing interfaces constituting a dual-sealing arrangement for retention of internal pressure and restriction of ambient air ingress, and wherein the locking snap ring retains the closure on the bottle neck.

2. The closure, according to Claim 1, wherein the bore plug seal (4, 4.1) and side seal (5, 5.1) cooperate to provide a dual-sealing system for retaining carbonation, preventing gas leakage, and restricting ingress of ambient air into the container.

3. The closure, according to Claim 1 or Claim 2, wherein the locking snap ring (3) is connected to the main body of the closure through a circumferential joining zone comprising slits, perforations, frangible bridges, or combinations thereof.

4. The closure, according to any preceding claim, wherein the joining zone is configured to tear and separate when the closure is removed using a bottle opener, thereby providing visible tamper evidence and preventing reuse of the closure.

5. The closure, according to any preceding claim, wherein the locking snap ring (3) remains attached to the bottle neck after opening while the main cap body is detached therefrom.

6. The closure, according to any preceding claim, wherein the closure comprises a curved profile portion (6) disposed between the top wall (1) and the cylindrical side wall (2), the curved profile portion being arranged to distribute loading forces during cap application and opening.

7. The closure, according to any preceding claim, wherein the closure is configured such that manual removal without the use of a bottle opener causes destruction or visible deformation of the tamper-evident joining zone.

8. The closure according to any preceding claim, wherein the closure is adapted for sealing still beverages, medium-carbonated beverages, alcoholic beverages, soft drinks, or similar liquid products packaged in pry crown neck finish glass bottles.

9. The closure according to any preceding claim, wherein the closure is specifically configured for pry crown neck finish glass bottles and is structurally distinct from closures intended for threaded neck finishes, lug finishes, crown cork finishes, or other container neck configurations.

10. A closure substantially as hereinbefore described with reference to the accompanying drawings.STATEMENT UNDER ARTICLE 19 (1)The claims have been amended to improve clarity and to more precisely define the structural features of the invention.The amended claims now include a clearly defined independent claim directed to a singlepiece plastic snap-fit closure for a pry crown neck finish glass bottle. The independent claim expressly defines a bore plug seal configured to engage an inner surface of the bottle neck and a side seal configured to engage an outer sealing surface of the bottle neck. The amended claims further define the cooperation of these sealing elements to form a dualsealing arrangement.The amended claims additionally define the structural relationship between the closure body, the locking snap ring, and the frangible joining zone which provides tamper evidence upon opening by an opener.The amendments remove ambiguity present in the original claims and provide a clearer distinction between essential and optional features of the invention.The Applicant respectfully submits that neither the primary reference cited in the International Search Report nor the combination of cited references discloses or suggests the specific dual-sealing arrangement recited in the amended claims, wherein a bore plug seal and a side seal simultaneously establish respective internal and external sealing interfaces within a single-piece plastic snap-fit closure for a pry crown neck finish glass bottle.The Applicant therefore respectfully submits that the amended claims more clearly define the invention and further distinguish the claimed subject matter from the cited prior art.

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