Envelopes – wrappers – and paperboard boxes – Paperboard box – Having means to facilitate opening the box by severing box...
Patent
1997-02-28
1998-09-15
Shoap, Allan N.
Envelopes, wrappers, and paperboard boxes
Paperboard box
Having means to facilitate opening the box by severing box...
220269, 229229, 229238, B65D 1730
Patent
active
058067574
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a device, for unsealing a pour opening of a liquid container, that is located over a sealing member, such as a film-shaped sheet, for covering and sealing the pour opening of a liquid container that is formed of packaging web made mainly of paper or plastic material, and that opens the sealing member. In particular, the present invention pertains to a device, for unsealing a pour opening, that is appropriate for unsealing a pour opening, of a so-called non-resealable liquid container, that, once opened, is not sealed again.
BACKGROUND OF THE INVENTION
A pour opening of a liquid container that is formed of packaging web consisting mainly of paper or plastic material is sealed with a film-shaped sheet or a resin pull-tab. To unseal the pour opening, the sheet or the pull-tab is torn off, or the sheet is pierced with a drinking straw. However, the disadvantage of the opening methods that involve the tearing off of sheets and pull-tabs or the piercing of sheets with drinking straws is that the sheets or the pull-tabs and the drinking straws become another source of refuse when separated from liquid containers, and if they are discarded carelessly, can constitute a trash disposal problem.
Conventional arrangements have been devised with which only a part of a sheet or of a pull-tab is torn loose, and the unsealed sheet or pull-tab remains attached to the liquid container. With these arrangements, however, the problem is that when a user releases the sheet or the pull-tab that has been torn loose, it returns and closes the pour opening of the liquid container. One type of liquid container that is made of a metallic material, such as aluminum, has a pour opening so structured that once the pour opening is unsealed, the unsealed condition is maintained. However, none of the liquid containers that are formed mainly of paper or a plastic material have a pour opening that is so structured. Therefore, there is a demand for the development of such a structure.
To overcome the above described problems, it is one object of the present invention to provide a device for unsealing a pour opening of a liquid container, which is formed mainly of paper or a plastic material, that is so designed that once a pour opening is unsealed, it does not close again, even if a user releases the unsealed portion.
DISCLOSURE OF THE INVENTION
According to the present invention, provided is a device for unsealing a pour opening, of a liquid container, that is located atop a sealing member, such as a film-shaped sheet, for covering and sealing the pour opening of a liquid container that is formed of packaging web made mainly of paper or plastic material, and that opens the sealing member. As is shown in FIG. 1A, a pour opening unsealing device 10, which is made of a resin material, comprises: pour opening unsealing device 10 is secured to the liquid container. The unsealing portion 11, the actuating portion 12 and the support portion 13 are disposed across the same plane. The opening portion 11 and the actuating portion 12 are connected at a lower portion of a V-shaped groove 14, which is formed between facing end of the unsealing portion 11 and the actuating portion 12, by a thin-walled portion 14a. The support portion 13 is positioned so as to encompass the unsealing portion 11 and a predetermined portion of the actuating portion 12, which is a continuation of the unsealing portion 11. The actuating portion is supported by support bar members 15 having a predetermined length, which are provided on both sides a specified distance from the V-shaped groove 14, and pivots at the support portion 13. When one end of the actuating portion 12 that is farthest from the unsealing portion 11 is raised, the other end of the actuating portion 12 nearest the unsealing portion 11 pivots around the support bar members 15, and accordingly, the unsealing portion 11 is pivoted at the thin-walled portion 14a to unseal a sealing member that is located under the unsealing portion 11.
Referring now al
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Elmar Mock
Patrik Hylta
Per Ohlsson
Mai Tri M.
Shoap Allan N.
Tetra Laval Holdings & Finance S.A.
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