Patent Application
20140251943
1. Field of the Invention
The present invention relates to a sealing structure for a bottle, and in particular to a sealing structure for sealing a bottle effectively with a metal cap to prevent entry of foreign matters to the bottle.
2. Description of the Related Art
Bottles for beverage like beer are generally made of glass to keep the beverage in good flavor and have better preservation condition, and moreover metal caps are often used to seal the bottles.
In the described conventional sealing structure, since an upper end 19 (shown in
The teeth 11 formed by a typical method has a large longitudinal length a and a hollow interior space b. The small gap is therefore formed between the hollow teeth 11 and the flange 16. Foreign matters may move along a direction shown by arrows c into the hollow interior space b of the teeth 11 and even pass through the hollow interior space b to enter the opening 15 of the bottle 14.
Although the packing 13 is provided between the metal cap 10 and the opening 15 to seal the opening 15, the packing 13 made of cork or film may be damaged by certain foreign matters such as microbes to allow the foreign matters enter the bottle 14. In addition, due to the high production rate in factories, the metal cap 10, the opening 15 or the packing 13 may fail to cause an unsealed structure under allowable production tolerance in the production process, and the probability for the entry of foreign matters through the small gap is thus increased.
Appearance of foreign matters in beverage bottles with unopened metal cap 10 may damage reputation of related company and cause large financial loss. It is necessary to improve the conventional sealing structure.
An object of the invention is to provide a sealing structure for a bottle wherein the hollow teeth and the opening of the bottle are sealed to prevent entry of foreign matters to the bottle.
Another object of the invention is to provide a sealing structure for a bottle wherein the inner periphery of the cap is conformal with and completely fitted to the outer periphery of the opening of the bottle.
To achieve the described objects of the invention, a sealing structure is disclosed, which includes a bottle and a cap sealing the opening of the bottle. The bottle includes a body, an opening formed on the body and a flange protruding from periphery of the opening, wherein the flange has a curved shape having a lower end depressed and connected to periphery of the body to form a neck portion. The cap includes a skirt portion which surrounds the periphery of the body and has a plurality of teeth equally spaced on periphery of the skirt portion and extending longitudinally along the body and a plurality of radial protrusions protruding toward the periphery of the body between every two adjacent teeth, wherein the teeth are pressed by a machine in a lower position thereon so that the radial protrusions abut periphery of the neck portion, and the cap abuts the flange and is conformal with and completely fitted to the flange.
In a preferred embodiment of the sealing structure of the invention, the pressed position on the teeth is lowered so that the cap abuts the flange and is conformal with and completely fitted to the flange, which provides a better sealing effect.
The invention can be fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein:
The novelty and other features of the invention are described by the following embodiments accompany with the drawings.
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When the cap 20 is pressed to the opening 31 by the sealing machine, the radial protrusions 26 abut the lower end of the neck portion formed by the depressed arc portion 33, and the cap 20 is pressed to be conformal with and fitted to the flange 32 tightly so that the entry of foreign matters to the bottle 30 is avoided.
The sealing structure of the invention provides the depression portion formed by teeth of the skirt portion. The teeth are pressed in a lower position so that the depressed arc portions abut the neck portion of the bottle to form an effective sealing structure. The sealing structure prevents small foreign matters from entering the bottle and provides a better sealing effect for the bottle.
While the invention has been described by way of example and in terms of preferred embodiments, it is to be understood that the invention is not limited thereto. To the contrary, it is intended to cover various modification and similar arrangement (as would be apparent to those skilled in the art). Therefore, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modification and similar arrangements.
