JPH11310262A - Unsealing cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a constitution capable of securely re-sealing, simply and at the low cost for an unsealing cap set on a storage body formed of a plastic bottle, a flexible synthetic resin sheet or the like. SOLUTION: An unsealing cap 1 is provided with a mouth section 2 for taking out a content, a closed end cylindrical cap section 20 with sealing protruded sections 20c and 20d connected in the state of thin wall thickness with the inner periphery of the mouth section to be fitted the mouth section and brought into contact with the inner periphery of the mouth section and a catching section 25 set on the cap section 20. A notch 26 is formed in the peripheral direction above the connection of thin wall thickness of the cap section 20, and a rib 30 is provided on its inner face.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening stopper attached to a container for holding a liquid (hereinafter, referred to as a container) such as a liquid food, a seasoning, or a liquid detergent.

[0002]

2. Description of the Related Art Conventionally, a container for accommodating the above-mentioned items has been produced, for example, as a plastic bottle or by fusing a flexible synthetic resin sheet. In order to take out an object, an opening stopper made of synthetic resin is attached. This opening stopper has a resealing function so that the container is kept sealed when the container is sold, and can be resealed when used by the user.

[0003] As a conventional opening stopper having a resealing function, an opening stopper itself constituted by a plurality of members (a so-called two-piece opening stopper) is known. Such a two-piece opening stopper is made of plastic. In the case of a configuration that attaches to a bottle or the like, it is common to provide a middle stopper attached to the mouth of the bottle and a detachable cap on the inner stopper, and form a thin thick score line on the inner stopper. is there. That is, a hook is formed to hook the inner plug with a finger so that the score line can be easily torn.
It is configured to hold the hook portion and cut the score line to form an opening. Then, the contents are taken out through the opening by opening the cap, and resealing is performed by attaching the cap to the inner plug again.

[0004] However, as described above, when the opening stopper is formed of a two-piece, there are problems that the cost is increased and a space is formed between the cap and the inner stopper, so that liquid leakage or liquid dripping easily occurs. For this reason, it is also conceivable to construct these components in a one-piece molded integrally. In other words, the main body and the plug are integrally molded, and in use, the plug can be separated from the main body, and after separation, the plug can be sealed in the main body. Since there is no space between the inner plug and the cap unlike the two-piece structure, liquid leakage and liquid dripping can be prevented.

In the case where the opening stopper has a one-piece structure, the stopper body and the main body can be easily and reliably separated from each other at the time of use, and can be securely re-sealed after the contents are taken out. It is preferable to have a configuration. In other words, if the two cannot be separated without applying a strong force, or if the two are separated at an undesired portion by the user's arbitrary handling, the product will be difficult to handle for the user.

The present invention provides a low-cost and reliable resealing and easy-to-handle structure for an opening stopper attached to a container made of a plastic bottle, a flexible synthetic resin sheet or the like. The purpose is to do.

[0007]

In order to solve the above-mentioned problems, an opening stopper attached to a container according to the present invention is provided with an opening for taking out the contents and an inner periphery of the opening. A bottomed, cylindrical plug body, which is connected to a thin wall, is fittable to the mouth, and has a sealing projection formed in close contact with the inner periphery of the mouth; And a hook portion attached to the portion, and in the plug body portion, a notch portion is formed in a circumferential direction above a connection portion with the thinned mouth portion, The hook portion side and the connection portion side are connected by at least two connection portions, and a rib is arranged on the inner surface of the plug body portion.

[0008] As described above, the opening plug is formed in a one-piece shape in which the mouth and the plug are connected in advance with a thin-walled portion. The part is separated from the mouth via a thinner part. During this separating operation, the plug body is easily and reliably separated from the mouth by the notch and the rib formed in the plug body. Then, after taking out the contents, resealing is performed by inserting the stopper into the mouth.

[0009]

FIG. 1 to FIG. 3 are views showing a first embodiment of the present invention. As shown in FIG. 1, the opening plug 1 of this embodiment is configured to be attached to a refill container 50 that is sold separately from, for example, a main container that stores food and detergent. The container is made by preparing a plurality of flexible synthetic resin sheets 50a, which are relatively inexpensive materials, and fusing them.
In the figure, such a fused region is indicated by a shaded portion.

The opening plug 1 has an opening 2 formed with a communication hole 2a for taking out the contents stored in the storage body 50.
And a plug body 20 having a bottomed shape (constituting the sealing wall 20b), which is connected to the inner periphery of the mouth portion 2 with a thin and thick portion. It is integrally molded with a synthetic resin such as polyethylene.
The mouth part 2 is used in the step of fusing the synthetic resin sheets together.
The sheet is integrally fused with the synthetic resin sheet interposed at an appropriate position. For this reason, a fusion portion 3 having, for example, a boat-shaped cross-section (or a circular cross-section) is formed in an intermediate portion of the mouth portion 2 so as to easily fuse with the synthetic resin sheet. In addition, although the mouth part 2 and the plug body part 20 of this embodiment are formed in circular cross-section, they are oval, rectangular, etc.
The cross-sectional shape can be variously modified and is not limited.

The mouth portion 2 has a short projecting amount (specifically, a degree that can be picked up with a finger) so that the contents can easily flow out when the container 50 is tilted. . Further, it is preferable to form an adjusting portion 5 that enables close contact with the inner surface of the sheet member at the protruding end of the mouth configured as described above. That is, on the outer peripheral surface of the mouth portion 2, the sloped portion 5 a which is gradually separated from the inner surface of each sheet member is formed from the vicinity of the fusion portion with the sheet member to the front end, so that the protruding portion of the mouth portion 2 can be formed. When the finger is picked from above the member, each inner surface of the sheet member is in close contact with the inclined portion 5a, and the opening area of the mouth can be sealed. For this reason, while the container 50 is tilted, the protruding portion of the mouth 2 is picked up,
By adjusting the pressing force, the flow rate can be controlled, and when the transfer operation to the main container or the like is performed, the stored contents are not spilled due to the excessive flow rate. Note that the shape of the above-described inclined portion can be variously modified as long as the outflow amount can be controlled.

The distal end of the plug body 20 is integrally connected to the opening 2 via a thin thick portion 20a over the inner periphery thereof (the thin thick portion is located above the sealing wall 20b). is there). The thin-walled portion 20a is a portion that is kept in a sealed state without leakage of the contents and is torn in use, and has a thickness of approximately 0.1 mm to 0.5 mm.
Set to about.

The stopper portion 20 has a hook portion 25 at the end opposite to the thin-walled portion. The hook portion 25 is used to separate the plug portion 20 from the mouth portion 2 by pinching it with a finger and tearing the plug portion 20 at the thin-walled portion 20a at the time of actual use. In the upper surface region of the plug body portion 20, it is formed so as to protrude in one tongue shape. Note that the projecting direction of the hook portion (tongue piece) 25 is set so as to be parallel to a rib provided between connecting portions described later.

The plug body 20 is torn from the mouth 2 through the thin-walled portion 20a by pinching the hook portion 25, and then fitted into the mouth 2 to be resealable. I have. At the time of this fitting, a sealing projection (flange) 2 which is in close contact with the inner periphery of the mouth so as to prevent the internal contents from leaking.
Oc and 20d are formed on the outer peripheral surface of the plug body 20 at predetermined intervals in the axial direction. That is, the plug body 20 is
When dropped into the mouth part 2, the projections 20c and 20d are in close contact with the inner peripheral surface of the mouth part 2, so that the contents are not leaked together with the sealing wall 20b of the plug body part 20. .

The plug 20 has the protrusions 20c and 20d.
A cutout portion 26 is formed between the cutouts so as to cut out over a predetermined range in a direction perpendicular to the communication direction. In this embodiment, the notch portions 26 are formed so as to face each other over substantially 180 degrees in the circumferential direction, and as a result, two connecting portions 26a and 26b having a predetermined width and facing each other in the diametrical direction are formed. This connects the hook portion side of the plug body portion to the thin thick portion side. By forming the notch in the plug 20 as described above, the following operation and effect can be obtained.

When the tearing operation is performed by gripping the hook portion 25, as described above, the plug 20 and the mouth 2 are connected to each other through 360 degrees by the thin thick portion 20a. is there. Therefore, during the first tearing operation, 3
The force must be applied over 60 degrees, and a certain amount of force is required for the tearing operation by pinching the hook. On the other hand, during the first tearing motion,
By configuring to concentrate the force on a certain part, the tearing operation can be performed with a small force.

As described above, the notch 26 is formed in the plug body 20.
Is formed, the force generated at the time of the tearing operation is concentrated on the connecting portions 26a and 26b, in particular, the pulling force is concentrated on the connecting portion 26b. Acts intensively. Therefore, the tearing of the thin thick portion 20a can be performed very easily from the point P.

As described above, it is preferable that the position where the connecting portion is formed and the configuration of the hooking portion 25 be arranged so that the force can be concentrated most efficiently. That is, as shown in the drawing, in the case of a configuration in which the hooking portion 25 is formed in a tongue-like shape at one location in the upper surface region of the plug body 20, the user inevitably performs one hand during the cutting operation. Then, the adjusting portion 5 is pinched, the finger of the other hand is hooked on the hook portion 25, and the hook portion 25 is pulled in the direction of the arrow in FIG. For this reason, it is efficient to form the notch 26 so that the connecting portions 26a and 26b are positioned along the pulling direction (the direction in which the hook 25 protrudes).

The inner surface of the plug body 20 is designed to efficiently concentrate forces generated in various directions by an arbitrary tearing operation and to prevent the plug body 20 from deforming and dispersing during the tearing operation. Are formed with ribs. In the case of the configuration of the hook portion 25 and the notch portion 26 as described above, the rib is preferably arranged between the connecting portions 26a and 26b as indicated by reference numeral 30 in FIG. preferable. That is, by forming the ribs 30 described above, the force is efficiently transmitted during the tearing operation of the tongue piece 25, and even if the tongue piece 25 is operated with a small force, the plug body 20 is easily torn from the mouth 2. be able to. Further, even if the force from the hook portion 25 does not act in the direction of the arrow in the drawing, the force can be concentrated on the connecting portions 26a and 26b without being dispersed by forming the rib 30. . Further, by forming the ribs, a reinforcing effect on the plug body 20 is obtained, and the plug body is not deformed during the tearing operation.

Then, the plug body 20 separated as described above is dropped into the mouth 2 again after taking out the contents, and resealed via the sealing wall 20b and the projections 20c and 20d. Done.

FIGS. 4 and 5 show another embodiment of the present invention. In this embodiment, as shown in FIG.
It is composed of two tongue pieces projecting in the diameter direction from the outer periphery of the plug body 20. On the inner surface of the cylindrical plug body 20,
As in the previous embodiment, the rib 30 is provided so as to be parallel to the direction in which the tongue piece 35 projects. The plug body 20
Another rib 40 is provided on the inner surface of the
Is provided.

Thus, in the direction orthogonal to the rib 30,
Further, by providing the ribs 40, the plug body portion 20 can be effectively reinforced, and deformation during opening operation can be prevented. In particular, when the hook portion (tongue piece) 35 has a shape as shown in the figure, some users may operate to twist the tongue piece 35. Thus, the tongue piece 35
Even if it is twisted, the entire plug body 20 is effectively reinforced by the ribs 30 and 40 arranged in a cross shape, so that the connecting portions 26a and 26b are not cut due to deformation. That is, the configuration (shape, thickness, location, number, etc.) of the ribs formed on the inner surface of the plug body 20 can be variously deformed in accordance with the shape of the hook portion and the degree of action of the force. It is possible. Also, the height may be made different depending on the arrangement direction (FIG. 5).
In the configuration shown in (1), the height of the rib 40 is set lower than the height of the rib 30).

Although the embodiment of the present invention has been described above, the present invention can be variously modified as follows, for example, in addition to the above-described embodiment. The opening stopper according to the present invention can be attached not only to the synthetic resin sheet container shown in FIG. 1 but also to a bottle made of plastic. Also, the cross-sectional shape and length of the mouth and the plug, the shape of the tip of the mouth, the configuration of the hook, and the like can be variously modified. The upper protrusion 20d may be omitted from the sealing protrusions formed on the plug body, or may be created by the shape and configuration of the notch 26 formed on the plug body, that is, the cutout. The position, shape, and number of the connecting portions can be variously modified according to the usage.

[0024]

As described above, according to the present invention, the unsealing stopper attached to the container is constituted by one piece, so that the structure is simplified and the manufacturing cost can be reduced. Further, since the plug portion is directly resealed with respect to the mouth portion, it is possible to reliably prevent liquid leakage and dripping when resealing. In addition, since the notch is formed in the plug and the rib is provided on the inner surface thereof, the plug can be easily and reliably separated from the mouth, and the opening operation is facilitated.

[Brief description of the drawings]

FIG. 1 is a view showing a state in which an opening stopper according to the present invention is attached to a container made of a synthetic resin sheet.

FIG. 2 is an enlarged view of the unsealing stopper shown in FIG.

FIG. 3 is a view showing an opening stopper shown in FIG. 1 (a).
2B is a plan view, FIG. 2B is a cross-sectional view along line BB of FIG. 2A, FIG. 2C is a cross-sectional view along line AA of FIG. 2, and FIG. (E) of the cutout viewed from the left side
FIG. 4 is a view of the cutout portion shown in FIG.

FIG. 4 is a view showing another embodiment of the opening stopper, in which the opening stopper is partially cut away and enlarged.

FIG. 5 is a view showing the opening stopper shown in FIG. 4;
4B is a plan view, FIG. 4B is a cross-sectional view taken along line DD of FIG. 4A, FIG. 4C is a cross-sectional view taken along line CC of FIG. 4, and FIG. (E) of the cutout viewed from the left side
FIG. 4 is a view of the cutout portion shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Unsealing stopper, 2 ... Mouth part, 20 ... Plug body part, 20c, 20d
... Projections 25, 35 ... Hooks (tongues), 26 ... Notches, 26
a, 26b: connecting portion, 30, 40: rib, 50 container

Claims (5)

[Claims] 1. An opening stopper attached to a container, which is connected to an opening for taking out an object and a thin wall with respect to an inner periphery of the opening, and can be fitted to the opening. A bottomed and cylindrical plug body formed with a sealing projection that is in close contact with the inner periphery of the mouth, and a hook attached to the plug body. By forming a notch in the plug body portion in the circumferential direction above a connection portion with the thinned mouth portion,
An opening stopper, wherein the hook part side and the connection part side are connected by at least two connection parts, and ribs are arranged on the inner surface of the plug body part. 2. The opening stopper according to claim 1, wherein the rib is disposed between the connecting portions. 3. The opening stopper according to claim 2, wherein the ribs are also arranged in a direction orthogonal to the ribs arranged between the connecting portions. 4. The unsealing stopper according to claim 2, wherein the hook portion is a tongue piece extending in a direction parallel to a rib provided between the connecting portions. 5. The tongue piece is formed so as to protrude from the plug body at one place and extends in a direction parallel to a rib provided between the connecting portions. Item 2
Or the opening stopper according to 3.