EASILY OPENABLE PULL-OFF BEVERAGE BOTTLE CLOSURE

Abstract

An easily operable pull-off beverage bottle closure. The closure has a shell, a pull tab, and a liner covering the inner section of the shell providing circumferential sealing. The shell has score lines running on both sides of the pull tab enabling to tear off the closure. The liner is affixed to the inner upper section of the closing plane and covers the surface bigger than the surface limited by the score lines running through the upper plane of the shell.

Claims

1-3. (canceled)

4. An easily openable pull-off beverage bottle closure comprising: a shell, a pull tab, and a liner covering the inner section of the shell providing circumferential sealing; the shell has upper closing plane and a skirt wall shaped from the outer part of the upper part of the closing plane; the pull tab is connected with the skirt wall; the shell is formed with score lines running on the both sides of the pull tab from the skirt wall through the upper closing plane enabling to tear off the closure; the liner is affixed to an inner upper section of the upper closing plane and covers the surface bigger than the surface defined by the score lines running through the upper closing plane of the shell; and the distance (A) from the score line to the outer edge of the liner is from about 0.05 to about 1.2 mm.

5. The closure according to claim 1, and further comprising a coating which increases the adhesion which affixes the liner to the inner surface of the upper closing plane, is in the distance (C) of at least 0.1 mm from the score line measured on the inner surface of the shell in the radial direction to the skirt wall and in the distance (D) of at least 1.5 mm measured on the inner surface of the shell in the radial direction to the upper closing plane. (New) The closure according to claim 1, wherein the ratio of the distance (A) from the score line to the outer edge of the liner to the height of the liner (E) is from about 0.02 to 1.

7. The closure according to claim 2, wherein the ratio of the distance (A) from the score line to the outer edge of the liner to the height of the liner (E) is nom about 0.02 to 1.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0006] The objects, advantages and features of the invention embodiments disclosed herein will be more easily understood from the following detailed description, when read in conjunction with the accompanying drawing, in which:

[0007] FIG. 1 is a top perspective view of a preferred embodiment of the present invention, where part of the closing plane and the skirt wall are removed to show the liner;

[0008] FIG. 2 is a front view of the embodiment of FIG. 1, where the cross-section of the shell is visible to show the liner;

[0009] FIG. 3 is a partial cross-section view of the top left part of the shell of the FIG. 1 embodiment;

[0010] FIG. 4 a side view of the embodiment of FIG. 1, where the cross-section of the shell is visible to show the liner;

[0011] FIG. 5 is a top perspective view of the bottle closure placed on the top of the bottle neck of the FIG. 1 embodiment, where the pull tab is torn off to reveal the liner;

[0012] FIG. 6 is a side perspective view of the embodiment shown in FIG. 5; and

[0013] FIG. 7 is a side perspective view of the embodiment of FIG. 5.

DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION

[0014] The embodiment shown in the drawing has an easily openable pull-off beverage bottle closure consisting of a shell, a pull tab, and a liner covering the inner section of the shell providing circumferential sealing. The shell has an upper closing plane and a skirt wall shaped from the outer part of the upper part of the closing plane, and the pull tab is connected with the skirt wall. The shell has score lines running on both sides of the pull tab from the skirt wall through the upper plane enabling the closure to be torn off in accordance with the described embodiment.

[0015] The liner is affixed to the inner upper section of the closing plane and covers the surface bigger than the surface limited by the score lines running through the upper plane of alae shell. The liner is affixed with the use of a coating increasing the adhesion. The term the coating increasing the adhesion shall be understood as a coating applied to the inner surface of the shell upper panel (plane) in order to enable connection of the metal sheet, of which the shell is made, with the plastic, of which the liner is made. In particular, a coating, is obtained by application of lacquer or glue or another known substance, or by increasing the adhesion of the metal sheet in another known way, such as, for example, by treatment with gas plasma. The distance from the score line to the outer edge of the liner is from 0.05 to 1.2 mm. As a result the diameter of the liner is bigger than the maximal diameter of the torn part of the shell limited by the score lines. Sharp edges of the shell formed after pulling the pull tab upwardly and tearing, the score lines on the shell are secured by the liner. The liner is affixed to the inner surface of the shell strongly enough that, after the pull tab is pulled upwardly, the whole liner together with the torn part of the shell goes upward and does not stay on the bottle.

[0016] The coating increasing the adhesion, which affixes the liner to the inner surface of the closing plane, is situated in the distance of at least 0.1 mm from the score line measured on the inner surface of the shell in the radial direction to the skirt wall and in the distance of at least 1.5 mm measured on the inner surface of the shell in the radial direction to the upper closing plane.

[0017] The ratio of the distance from the score line to the outer edge of the liner to the height of the liner is from about 0.02 to 1. It ensures that the opening is easy, on condition that after the to pull tab is pulled upward the liner, together with the torn part of the shell, goes upward, not staying on the bottle.

[0018] With reference specifically to the drawing, the pull-off beverage bottle closure, where the shell is made of metal alloy, consists of upper closing plane 1 and skirt wall 2. Liner 3 is affixed to the inner surface of closing plane 1 of a coating increasing the adhesion and provides circumferential sealing. Score lines 4 on closing plane 1 and skirt wall 2 enable tearing of the closure by means of pull tab 5.

[0019] The distance A (FIG. 3) from score line 4 to the outer edge of liner 3 is from about 0.05 to about 1.2 mm. The coating increasing the adhesion, which affixes liner 3 to the inner surface of upper closing plane 1, is in the distance C of at least 0.1 mm from score line 4, measured on the inner surface of the shell in the radial direction to skirt wall 2, and in the distance D of at least 1.5 mm, measured on the inner surface of the shell in the radial direction to upper closing plane 1.

[0020] The ratio of the distance A from score line 4 to the outer edge of liner 3 to the height E of liner 3 is from about 0.02 to 1.

[0021] After pulling pull tab 5 the score lines 4 are torn and the part of closing plane 1 and the part of skirt wall 2 are pulled upward. The liner 3 going upward covers the sharp edges formed after tearing score lines 4.