JPH0948446A - Synthetic resin cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure the safety on uncapping, by making the cover body and the skirt with a synthetic resin and forming the boundary of the cover body and the skirt with a circular thin part and providing an uncapping space extending upward from the lower end of the skirt. SOLUTION: A synthetic resin cap 1 is constituted of a plug body 20 composed of a cylindrical body 21 with the bottom, fitted in the bottle mouth 10 and provided with a circular recess 23 at the inside, and a collar 22 put to contact the upper end face of the bottle mouth 10, and a cap body 30 fitted on the plug body 20. The cap body 30 is provided with a skirt 40 extended down from the peripheral edge. When opening the cap 1, the skirt is torn up while clipping a tab 43 of the skirt 40, then the thin part 45 is torn from the uncapping space and the skirt 40 is separated from the cap body 30 along the circular thin part 33. When the cap body 30 is pulled out of the bottle mouth 10, the cap body 30 is removed from the bottle mouth 10 together with the plug body 20 and the bottle is uncapped. When closing the cap, the cap body 30 is fitted in the bottle mouth together with the plug body 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin cap for sealing a bottle mouth, and more particularly to a synthetic resin cap in consideration of safety when opening and closing the bottle.

[0002]

2. Description of the Related Art Conventionally, a method of closing a bottle mouth portion of a glass bottle and the like is to first insert a bottomed cylindrical stopper body made of a synthetic resin having an aluminum foil adhered to the outer side into the bottle mouth portion, and then ,
A common method is to put a metallic decorative thin plate on the stopper and finally attach an aluminum overcap with a pulling piece around the mouth of the bottle so that the decorative thin plate is fixed. there were.

[0003]

However, the aluminum overcap may injure a finger or the like when the pulling piece is pulled and the overcap is torn to open the cap unless care is taken in handling. Therefore, it was considered to replace the metal such as aluminum with synthetic resin, but when the stopper is used as it is and the overcap is changed from metal to synthetic resin, the overcap and the ring on the outer surface side of the bottle mouth part are The fitting with the bulging part is weak, and there is a possibility that the cap may be opened together with the overcap. Also, in the case of a cap that integrates the stopper and the overcap, it is impossible to hollow and mold the inner stopper, so a decorative thin plate is required on the top surface, and after filling the contents,
It will also be necessary to replace the stoppering machine for capping.

The present invention has been made in order to eliminate the above-mentioned problems relating to the method of sealing the bottle mouth portion of a glass bottle, and does not use metals such as aluminum and uses synthetic resins. It is an object of the present invention to provide a synthetic resin cap used in consideration of safety when used for opening and opening.

[0005]

In order to achieve the above-mentioned object, the present invention relates to a first aspect of the present invention, in which a bottomed cylindrical body portion having an annular recess on the inner surface side is fitted and inserted into a bottle mouth portion. A synthetic resin cap fitted on the upper part of a stopper body which is provided at the tip of the body part and which is fitted to the upper end surface of the bottle mouth part, and the synthetic resin cap is The lid body attached to the upper portion of the stopper body, the inner ring vertically installed on the lower surface of the lid body, and inserted into the body portion of the stopper body, and the stopper body body on the outer surface side near the tip of the inner ring. Engaging protrusion that engages with an annular recess provided in the portion, a cleavable annular thin portion provided in the peripheral portion of the lid body, and a bottle mouth portion outer peripheral surface provided downward from the annular thin portion A skirt that is fitted to the skirt, and for opening upward from the lower end of the skirt There is provided a synthetic resin cap, wherein a to form a gripper portion is provided therebetween.

A second aspect of the present invention provides the synthetic resin cap according to the first aspect, characterized in that a connecting portion is formed in an intermediate portion of the opening space.

[0007]

As described above, according to the present invention, since the lid and the skirt are made of synthetic resin, the safety at the time of opening and opening the cap is high. Further, since the boundary between the lid and the skirt is an annular thin portion, and the holding space is formed by providing an opening space that extends upward from the lower end of the skirt, the skirt can be easily torn. Also, the lid body and the skirt portion can be easily separated. Further, since the connecting portion is formed in the intermediate portion of the opening space, even if the tip of the holding portion is caught by something, the holding portion will not be broken or lose its shape.

[0008]

The present invention will be described in detail with reference to the following examples.
As shown in FIGS. 1 and 2, a synthetic resin cap (1) of the present invention is fitted into a bottle mouth (10) and has a bottomed tubular body (21) having an annular recess (23) on its inner surface. And a flange (22) provided at the tip of the flange and fitted to the upper end surface of the bottle mouth (10), the plug (20) being fitted over the stopper (20). ) Lid (3
0), and a skirt portion (40) and the like which is hung vertically from the peripheral portion of the lid body and is fitted on the outer peripheral surface of the bottle mouth portion (10). At the tip of the bottle mouth (10) and its vicinity, a plurality of annular bulges (1
1) is provided.

As a synthetic resin material, thin wall stripping,
Thermoplastic resins such as polyethylene and polypropylene can be preferably used for reasons such as half-cutting and cost.

An inner ring (31) which is fitted into the body (21) of the stopper is vertically provided on the lower surface of the lid (30). On the outer surface side of the inner ring (31), in the vicinity of the tip end portion, an engagement protrusion (32) that engages with the annular recess (23) provided in the body portion (21) is formed.

The peripheral portion of the lid (30) is an annular thin portion (33) that can be torn and cut. This annular thin portion (3)
3) A skirt portion (40) is vertically provided downward. On the inner peripheral surface of the skirt portion (40), between the plurality of annular bulging portions (11) provided on the outer peripheral surface of the bottle mouth portion (10) except for a thin portion (45) described later. A ridge (41) that is fitted into the depression formed in
The skirt portion (40) is fitted on the outer peripheral surface of the bottle mouth portion (10).

From the lower end of the skirt portion (40), a dogleg-shaped opening space (42) having a connecting portion (44) is provided obliquely upward, and the opening space (4) is further provided.
From the upper end of 2) to the thin annular portion (33), the thin portion (4
5) is formed, and a holding portion (43) is formed on one side of the opening space (42). The synthetic resin cap (1) can be integrally molded by a molding method such as an injection molding method.

The method of closing the synthetic resin cap (1) is as follows. That is, first, the polyethylene plug body (20) is inserted into the bottle mouth portion (10) of the glass bottle filled with the contents by a conventional method. Next, the skirt portion (40) of the synthetic resin cap (1) is attached to the bottle mouth portion (1).
0), the ridges (41) formed on the inner surface of the skirt (40) were formed between the plurality of annular bulges (11) provided on the outer peripheral surface of the bottle mouth. The skirt portion (40) is fitted into the recess, the skirt portion (40) is fitted onto the outer peripheral surface of the bottle mouth portion (10), and the inner ring (31) of the lid body (30) is fitted into the stopper body (20). The engagement protrusion (32) formed near the tip of the inner ring is engaged with the annular recess (23) of the plug body, so that the lid body (30) is firmly fitted to the plug body (20). In this way, the synthetic resin cap (1) tightly plugs the bottle mouth portion (10).

The method of opening the synthetic resin cap (1) is as follows. That is, when the grip portion (43) of the skirt portion (40) is held with a finger or the like and the skirt portion (40) is torn, the opening space (42) triggers the thin portion (45) to be torn. The part can be easily torn to the upper annular thin part (33). When it is subsequently pulled, the skirt portion is torn along the annular thin portion (33) and separated from the lid body (30). Here, when the lid body (30) is pulled out from the bottle mouth portion (10), the lid body (30) together with the stopper body (20) is detached from the bottle mouth portion (10) and opened. When capping, the lid body (30) may be fitted into the bottle mouth (10) together with the plug body (20).

[0015]

As described above, the synthetic resin cap of the present invention is made of synthetic resin such as polyethylene without using a metal overcap or the like.
It is a cap that takes into consideration the safety when opening. Further, since the synthetic resin cap is inserted so as to cover the plug body, the conventional polyethylene plug body can be used as it is. It is also easy to decorate the top surface of the lid with a maker mark or the like by relief, stamping, printing or the like.

[Brief description of drawings]

FIG. 1 is an explanatory view in cross section showing an embodiment of the present invention.

FIG. 2 is a front view of the embodiment.

[Explanation of symbols]

 1 ... Synthetic resin cap 10 ... Bottle mouth 11 ... Annular swelling part 20 ... Plug 21 ... Body 22 ... Collar 23 ... Annular recess 30 ... Lid 31 Inner ring 32: Engagement protrusion 33: Annular thin wall portion 40: Skirt portion 41: Ribs 42: Opening space 43: Holding portion 44: Connecting portion 45: Thin portion

Claims (2)

[Claims] 1. A bottomed tubular body having an annular recess on the inner surface, which is fitted into the bottle mouth portion, and a collar portion provided at the tip of the body portion and attached to the upper end surface of the bottle mouth portion. A cap made of synthetic resin, which is fitted to the upper part of the cap body, the cap being made of synthetic resin, the cap body being attached to the upper part of the cap body, An inner ring that is fitted into the body of the stopper, an engaging protrusion that engages with an annular recess provided in the body of the stopper on the outer surface side near the tip of the inner ring, and a peripheral portion of the lid. And a skirt portion that is provided on the outer peripheral surface of the bottle mouth portion and that is provided downward from the annular thin portion, and that extends upward from the lower end portion of the skirt portion. A synthetic resin cap characterized in that a holding space is formed by providing an opening space. 2. The synthetic resin cap according to claim 1, wherein a connecting portion is formed in an intermediate portion of the opening space.