JP2000128220A - Plastic mouth stopper fitted with unjust opening preventing function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plastic mouth stopper for a gable top type paper container or the like excellent in unjust opening preventing functionality and easy in the cutting of a half cut part in sealing, locking and opening. SOLUTION: A plastic mouth stopper consists of a circular cap main body 10 and a bottle extraction port 40 formed by providing the pedestal band 30 connected to the surface of the flange part 40b of the extraction port by a plurality of half cut bridges 20. At least two projection-shaped fitting parts 10b are provided to the outer peripheral surface of the skirt part 10a of the cap main body and a projection-shaped part to be fitted is provided to the inner peripheral surface of the pedestal band 30 so as to correspond to the projection-shaped fitting parts 10b and each of the projection-shaped fitting parts 10b has an almost upper part 1/4 circumferential shape in a cap closing rotary direction and the projection-shaped part to be fitted has an almost lower part 1/4 circumferential shape and the circumferential side of them has a gentle inclined projection shape and the vertical straight line side of them has an almost right-angled projection shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug for closing an extraction port of a liquid container or the like, and more particularly to a plug of a liquid container such as a gable-top type, which has a function of preventing unauthorized opening. Related to plastic spouts.

[0002]

2. Description of the Related Art Conventionally, in a cap for closing an extraction port of a liquid container or the like, when the cap is opened, a bridge or a score (cut) attached to a cap hem is cut off, and the container extraction port is closed. It is known as a plastic plug with a function to prevent unauthorized opening with a security ring remaining and a function to prevent evidence of opening, that is, a function to prevent unauthorized opening,
In particular, it is used in a wide range of fields, mainly beverages such as soft drinks, for the purpose of preventing recent poisoning cases.

[0003] The cap for a plastic plug with a tamper-proof function is made of aluminum or plastic from which the bridge and score are easily cut. In recent years, plastic caps having the same type of function and having a locking function added to the security ring have been used.

However, as shown in FIG. 5 (a), for example, a T-band (guarantee ring) which is found in a normal beverage cap and which is connected to a skirt (10a) of a cap body (10) with a half-cut score. In the cap with tamper-evident prevention with (32), the half-cut score (80) is cut at the time of opening and resealed.
As shown in (b), the original state, that is, the state before opening was almost not different from that at first glance, and there was a problem in the function of preventing unauthorized opening.

In recent years, as a liquid container for soft drinks and alcoholic beverages, a gable-top type paper container with an extraction port and a back-in-box (an outer container made of cardboard or paperboard,
Large-sized containers made of plastic-coated inner bags with stoppers, and back-in-cartons (relatively smaller containers made of outer containers made of paperboard and inner bags with plastic stoppers), etc. It has been widely adopted from the viewpoint of container transportation cost and environmental protection, and a cap for closing the extraction port or an extraction port is required to have a function of preventing unauthorized opening.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the problems and demands of the prior art, and it is an object of the present invention to provide a gable-top paper container, a back-in-box, a bag-in-a-box, and the like. In a plastic plug with an unauthorized opening prevention function such as an in-box, it is apparent at a glance that the half-cut portion is cut by the unauthorized opening, that is, it is excellent in the unauthorized opening prevention function and is fitted with a seal (capping) ( It is an object of the present invention to provide a plastic plug with an unauthorized opening prevention function that can easily cut a half-cut portion in locking and opening.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, a circular cap body and a plurality of half-cut bridges are connected to a surface of a flange portion of an extraction port. A plastic plug with a tamper-proof function comprising a pedestal band and a bottle outlet provided in a shape to cover the skirt of the cap body, wherein at least two projections are provided on the outer peripheral surface of the skirt of the cap body. A plastic spigot having a function to prevent unauthorized opening, characterized in that a protruding fitting portion is provided on the inner peripheral surface of the pedestal band so as to correspond to the protruding fitting portion. It is what it was.

According to the second aspect of the present invention, the protruding fitting portion of the cap body hem has a substantially upper quarter circumferential shape in the cap body closing rotation direction, and corresponds to the protruding fitting portion. The projection-shaped fitting portion has a substantially lower quarter-circumferential shape, both of which have a gently curved projection shape on the circumferential side and a projection shape obtained by cutting the vertical straight side substantially at a right angle. 1
It is a plastic plug with a function for preventing unauthorized opening as described.

[0009]

Embodiments of the present invention will be described below. As shown in FIG. 1, the plastic plug with the function of preventing unauthorized opening of the present invention has a circular cap body (10).
And a flange (4) at the bottom of the bottle extraction port (40).
0b) A pedestal band (30) connected to the surface by a plurality of half-cut bridges (20) is provided on the cap body (10).
A tamper-proof plastic stopper (1) comprising a bottle extraction port (40) provided in a shape to cover the hem (10a), wherein the cap body (10) has an outer surface of the hem (10a). At least two projecting fitting portions (1
0b), and a protruding fitting part (30a shown in FIG. 3) is provided on the inner surface of the pedestal band (30) so as to correspond to the protruding fitting part (10b). It is.

According to a second aspect of the present invention, as shown in FIG. 2, at least two projecting fitting portions (10b) of the skirt portion (10a) of the cap body (10) are provided on the cap body (10). The projection-shaped fitting part (30a) shown in FIG. 3 corresponding to the projection-shaped fitting part (10b) has a substantially lower one-fourth circumference in the stopper rotation direction (P). The projection-shaped fitting portion (10b) and the projection-shaped fitted portion (3
0a) is characterized in that the circumferential side (E) is a gently curved projection and the vertical straight side (T) is a projection that is cut out at substantially a right angle.

In sealing the plastic plug (1) with the function of preventing unauthorized opening of the present invention (hereinafter referred to as capping), the cap body (10) is rotated in the rotation direction (P) as shown in FIG. The bottle extraction port (4
0), and the circumferential side (E) of at least two protruding fitting portions (10b) on the skirt (10a) of the cap body (10) as shown in FIG. In addition, since the circumferential side (E) of the protruding fitted portion (30a) inside the pedestal band (30) has a gentle curve with each other,
It easily passes through the circumferential side (E), and the protrusion-shaped fitting portion (10
b) and the vertical straight side (T) of the projecting fitting part (30a).
When rotated up to this point, the vertical straight sides (T) are firmly fitted together and locked so as not to rotate in the reverse direction.
That is, the structure is such that capping can be easily performed and locking can be easily and firmly performed.

In opening the plastic plug (1) with the function of preventing unauthorized opening of the present invention, the cap body (10) is rotated in a direction opposite to the rotation direction (P) as shown in FIG. However, as described above, since the vertical straight sides (T) of the protruding fitting portion (10b) and the protruding fitted portion (30a) are firmly fitted, the vertical straight side (T) Of the pedestal band (30)
, A plurality of half-cut bridges (20) provided below the pedestal band (30) are cut, and the pedestal band (30) is attached to the cap body (10) hem (10a).
The mechanism is a mechanism that facilitates the so-called legitimate opening of the customer.

Furthermore, for example, even if the half-cut bridge (20) is reopened after the unauthorized opening, the cut half-cut bridge (20) does not return to its original state, so that the illegal opening can be easily recognized at a glance. Therefore, the spout has an excellent function of preventing unauthorized opening.

The plastic plug (1) with the function of preventing unauthorized opening according to the present invention is manufactured by an injection molding method or a compression molding method, which can be selected as appropriate. Also,
This material is made of low-density polyethylene, high-density polyethylene, linear polyethylene, polypropylene, etc., blended with additives such as lubricants, antistatic agents, coloring agents, etc., as required, to obtain a moldable, half-cut bridge ( 20) can be appropriately selected in consideration of the cutting property and the like.

Further, as a use of the plastic plug (1) having the function of preventing unauthorized opening according to the present invention, in particular, as shown in FIG. 3, a bottle extraction port provided with a sealing flange (40b) at a lower portion thereof. Gable-top paper container, back-in-box and back-in-carton that require (40) (the flange (40b) can be used for the roof of the gable-top paper container or the back-in-box or back-in-carton). It is applicable to liquid containers for storing alcoholic beverages, soft drinks, etc., which are required to have a function to prevent unauthorized opening.

[0016]

As described above, the present invention has the following effects. That is, a circular cap main body, and a pedestal band connected to the surface of the flange portion at the bottom of the bottle extraction port with a plurality of half-cut bridges, from a bottle extraction port provided in a shape to cover the bottom of the cap body. The cap is provided with at least two protruding fitting portions on the outer peripheral surface of the skirt portion of the cap body, and the inner peripheral surface of the pedestal band corresponds to the protruding fitting portion. Is provided with a protruding fitting part,
The at least two protrusion-shaped fitting portions have a substantially upper quarter-circumferential shape in the cap body closing rotation direction, and the projection-shaped fitted portions corresponding to the protrusion-shaped fitting portions have a substantially lower quarter-circle. Both the projection-shaped fitting part and the projection-shaped fitted part have a gently curved projection shape on the circumferential side, and the vertical straight side has a projection shape cut out at a substantially right angle, so that capping and It can be a plastic plug with a function of preventing unauthorized opening, which can be firmly locked and opened easily.

Further, it is possible to easily determine whether or not a plurality of half-cut bridges have been cut, that is, whether or not unauthorized opening has occurred.

Therefore, the present invention is particularly applicable to a gable-top paper for storing beverages such as alcoholic beverages and soft drinks, and a back-in-paper.
It has an excellent practical effect as a plastic plug with a function to prevent unauthorized opening of boxes and back-in-cartons.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an embodiment of a plastic plug with an unauthorized opening prevention function of the present invention in a side sectional view and a front view.

FIG. 2 is a perspective view showing an embodiment of a cap body constituting a plastic plug with a function of preventing unauthorized opening according to the present invention.

FIG. 3 is a perspective view showing one embodiment of a flange portion and a pedestal band in a bottle extraction port constituting a plastic plug with an unauthorized opening prevention function of the present invention.

FIG. 4 is an upper cross section showing one embodiment of a cap main body and a protruding fitting portion provided on a bottle extraction port and a protruding fitted portion which constitute a plastic plug having a function of preventing unauthorized opening according to the present invention. FIG.

5A and 5B show an embodiment of a conventional plastic plug with a function to prevent unauthorized opening, in which FIG. 5A is a schematic diagram showing an opened state, and FIG. 5B is a diagram showing a reclosed state. It is a schematic diagram.

[Explanation of symbols]

 1 Plastic cap with illegal opening prevention function 10 Cap main body 10a Cap base hem 10b Projection fitting section 20 Half cut bridge 30 Base band 30a Projection cover Fitting part 32 T band 40 Bottle extraction opening 40 b Flange part 80 Half cut score E Circumferential side P Closure rotation direction T Vertical straight side

Continuation of the front page (72) Inventor: Norikazu Kakiki 1-5-1, Taito, Taito-ku, Tokyo Toppan Printing Co., Ltd. F-term (reference) 3E084 AA05 AA12 AA34 AB01 BA02 CA01 CC03 DA01 DB04 DB06 DB12 DC03 FA09 FB01 GA01 GB01 KA13 KA15 KB01 LA17 LB01 LD01

Claims (2)

[Claims] 1. A bottle extraction opening formed by a circular cap body and a base band connected to a surface of a flange portion below the extraction opening by a plurality of half-cut bridges so as to cover the bottom of the cap body. The cap is provided with at least two protrusion-shaped fitting portions on an outer peripheral surface of a skirt portion of the cap body, and corresponds to the protrusion-shaped fitting portions on an inner peripheral surface of the pedestal band. A plastic plug with an unauthorized opening prevention function, characterized in that it is provided with a protruding fitting portion so as to perform the operation. 2. A projection-shaped fitting portion at the bottom of the cap body,
The cap body has a substantially upper quarter-circumferential shape in the closing rotation direction of the cap body, and the protruding fitting portion corresponding to the protruding fitting portion has a substantially lower quarter-circumferential shape, and both have a gentle circumferential side. The plastic plug with a function for preventing unauthorized opening according to claim 1, characterized in that it is a projection having a curved shape and a vertical straight side cut out at a substantially right angle.