JPH0439174Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a container dispensing cap that is used by being attached to the mouth of various containers, including bottles.

[Prior Art] The inventor of this invention previously devised a container dispensing cap as shown in FIG. 6, and filed an application for registration of a utility model. (Jitsugan No. 58-15310).

Since this invention is an improvement of the above-mentioned invention, the above-mentioned invention will be explained first.

In FIG. 6, reference numeral 1 denotes a mounting portion for mounting on a bottle or other container (not shown), and a spouting tube 2 for pouring out liquid is integrally provided with this mounting portion to form a main body 3. 4 is a mouth wall that blocks the flow of liquid;
It is integrally connected to the inside of the main body 3.

2a shows the mouth wall connection part of the spouting cylinder 2.

An endless fissure 5 is formed in the mouth wall 4, and a torn part 6 is formed on the inside of the fissure 5, and a remaining part 7 is formed on the outside. 8 is a tearing member provided on the upper part of the tearing part 6. Reference numeral 11 denotes a metal sheet attached to the mouth wall 4 in correspondence with the fissure 5, and is composed of a metal foil 10 having at least a synthetic resin layer 9 (see FIG. 7) on its lower surface.

When opening this pouring cap for the first time, the tearing member 8 inside the pouring tube 2 is pinched and pulled upward, but since the inside of the pouring tube 2 is usually narrow, the tearing member 8 is pulled upward. 8 cannot grasp it strongly and can only hold it to the extent of simply picking it.

For this reason, it was difficult to apply a strong force to the tear-off member 8, and therefore it was difficult to pull the tear-off member 8 strongly.

In order to solve this problem, the fissure 5
It is easy to imagine that it would be sufficient to form the fissures 5 to be very thin and easy to tear with a small force. This was not possible because it would accelerate the deterioration of the product due to oxidation.

However, in the disclosed device, the fissure 5
By providing the metal sheet 11 correspondingly, the fissure groove 5 can be formed very thin and can be easily torn with a small force. Even with the tearing member 8, which can only be held to the extent that it can be simply grasped inside and is difficult to apply strong force to, the fissure groove 5 can be easily torn with a small force.

[Problems to be solved by the invention] However, the above-mentioned pouring cap had the following drawbacks. The reason is that the metal sheet 11 to be attached to the mouth wall 4 is manufactured by punching with a press, and therefore, the cross section of the metal foil 10 is exposed at the outer peripheral part 11a of the metal sheet 11, and there is nothing in this part. If the liquid inside the container comes into contact with it for any reason, it may change its quality.

This invention was made in order to solve the above-mentioned problem, and the purpose of this invention is to provide the above-mentioned pouring cap which achieves the above-mentioned effects, so that the exposed metal part of the outer peripheral part 11a of the metal sheet 11 is It is an object of the present invention to provide a dispensing cap for a container which can sufficiently prevent contact with the liquid contained in the container.

[Means for Solving the Problems] This invention that achieves the above object is described as follows: a synthetic resin attachment part 1 that is attached to the mouth of the container; and a pouring tube that is integrally provided with the attachment part 1. 2; a mouth wall 4 that is integrally provided inside the main body 3 and blocks the flow of liquid;
A downward tube 3a provided on the outer periphery of the mouth wall 4 so as to protrude downward; a tear portion 6 formed inside the fissure 5 by an endless fissure 5 formed in the mouth wall 4; A tearing member 8 is integrally provided inside the pouring tube 2 at the upper part of the tearing part 6; a layer of synthetic resin is provided on the lower surface of the mouth wall 4 at least on the lower surface corresponding to the tearing groove 5; A metal sheet 11 made of a metal foil 10 provided with a metal foil 10; an outer periphery 11 of the metal sheet 11 insert-molded in the downward tube 3a;
This is a pouring cap for a container, characterized in that it consists of a; and is integrally molded by insert molding.

[Function] Since the pouring cap of this invention is located inside the narrow pouring tube 2 as mentioned above, it is difficult to grasp it firmly.
The tearing member 8, which is difficult to apply a large force to, allows the fissure 5 to be easily torn with a relatively small force, and also prevents air from permeating through the fissure 5 and resulting deterioration of the product inside the container. can be eliminated.

The metal sheet 11 has an outer peripheral portion 11a.
The metal surface of the metal sheet 11 is in contact with the inside of the downward cylinder 3a in a liquid-tight manner due to the synthetic resin that is melted and molded by insert molding and solidified in that state, so that corrosion of the metal surface of the metal sheet 11 and the liquid in the container is prevented. can be sufficiently prevented. Since its structure is based on insert molding, it can be easily formed together with the molding of the pouring cap without requiring any troublesome processes such as adhesion.

[Example] As mentioned above, since this invention is an improvement of the invention made by the inventor of this invention, many parts of the pouring cap of this invention are the same as the pouring cap for which the application was filed. It is formed. Therefore, in order to avoid duplication of explanation, the same parts in this invention and the previously filed invention shall be given the same reference numerals, the same names, and have the same functions.
Also, the metal sheet 11 used in the applied invention
was used as is in this invention. Accordingly, FIG. 7 refers to the parts of the applied pouring cap and also shows an embodiment of the present invention.

In Figures 1, 4, and 5, reference numeral 1 denotes a mounting part that is attached to a bottle or other container, and if the container is a bottle, it may be shaped like a cylinder as shown in Figure 1, or it may be shaped like a paper carton or the like. In some cases, it is formed into a flange shape as shown in FIG. Reference numeral 2 denotes a spouting cylinder, which may be in the shape of a wrapper as shown in Fig. 1, or may be in the form of a straight cylinder although not shown;
"Substantially cylindrical" refers to them. 3 indicates a main body consisting of a mounting portion 1 and a pouring tube 2. These are made of synthetic resin. Reference numeral 4 denotes a mouth wall that blocks liquid outflow, and is integrally connected to the inside of the main body 3.

5 is an endless fissure formed in the mouth wall 4; 6;
7 is the remainder, and 8 is a tear-off member formed on the tear-off portion 6, which is provided in the shape of a pull ring, for example. 11 is a metal sheet, and as shown in FIG. 7, a synthetic resin layer 9 is provided at least on the lower surface or both surfaces. 9a is an adhesive layer. The metal sheet 11 is manufactured by punching with a press, and as shown in FIG.
Both parts are provided by insert molding.

The outer peripheral portion 11a is liquid-tightly embedded in the downward cylinder 3a by insert molding of synthetic resin as described above.

Regarding the meaning of "liquid tight" in this case, during the insert molding, the raw material synthetic resin is first heated and melted, and the outer peripheral part 11a of the metal sheet 11 is sealed by the melted and liquid synthetic resin. covered. Since the synthetic resin solidifies in that state, the outer peripheral portion 11a solidifies and is molded in close contact with the synthetic resin to prevent liquid from leaking.

The above-mentioned "liquid tight" refers to this state.

Next, regarding the above insert molding, in Fig. 2, 14 is the first core, 15 is the second core,
16 indicates a product protrusion plate. Further, 17 is a first cavity, 18 is a second cavity, 19 is a third cavity, and 20 is an injection port. The outer peripheral part 11a of the metal sheet 11 is placed to protrude into the molding space 21 of the pouring cap, and in the next step, as shown in FIG. 3, molten synthetic resin 22 is injected from the injection port 20. , the outer circumferential portion 11a is insert-molded into the downward tube 3a of the pouring cap. In this case, as described above, the synthetic resin 22
turns into a liquid and covers the outer circumferential portion 11a and solidifies as it is, so that that portion is formed sufficiently liquid-tight.

Next, by removing the pouring cap from each cavity and each core, a pouring cavity as shown in FIG. 1 is obtained.

In addition, when this pouring cap is used for a carton or the like, it is formed as shown in FIG. 4 as an example. In the figure, 23 indicates an outer cover, 24 indicates an outer cover fixing portion, and 25 indicates a thread. Further, 26 indicates an adhesive or fusion layer.

When opening the dispensing cap attached to the container, the user pulls the tearing member 8 upward and tears the metal sheet 11 along with the fissure groove 5.
Pour out the contents of the container.

[Effect of the device] This device is configured as described above, and the fissure 5
By providing the metal sheet 11 correspondingly, the fissure 5 can be made even thinner, and in this way, it can be held only to the extent that it can be simply pinched inside the narrow spouting tube 2. First, even with the tearing member 8 in the pouring tube 2, which is difficult to apply strong force to, the fissure groove 5 can be easily torn with a small force. Moreover, in spite of this, it is possible to eliminate air permeating into the container from the fissures 5, and it is possible to prevent the liquid product in the container from deteriorating due to the permeated air.

The outer circumferential portion 11a of the metal sheet 11 is insert-molded inside the downward tube 3a, covered with molten synthetic resin, and the synthetic resin is solidified in that state, so that the contact portion is not exposed. It can be formed sufficiently liquid-tight. Accordingly, it is possible to reliably prevent the content liquid from coming into contact with the metal surface of the peripheral end portion 12 and causing an adverse effect.

Moreover, the structure can be easily formed during molding of the pouring cap without requiring complicated steps such as gluing.

[Brief explanation of the drawing]

Figure 1 shows an embodiment of this invention, and is a cross-sectional view of a pouring cap of a container, and Figure 2 shows one of the steps for forming the pouring cap of this invention, showing a mold containing a metal sheet. Figure 3 is a cross-sectional view of the case where molten synthetic resin is injected into the mold shown in Figure 2, Figure 4 shows another embodiment of this invention, showing a container equipped with a pouring cap. 5 is a sectional view corresponding to FIG. 1 showing still another embodiment of this invention, FIG. 6 is a sectional view of a pouring cap of a container that the creator of this invention previously applied for, and FIG. The figure is a sectional view of the metal tip used in the pouring cap for which the application was filed and the pouring cap of this invention. 1... Mounting part, 2... Pour tube, 3... Main body, 3
a... Downward tube, 4... Mouth wall, 5... Fissure, 6...
... Tear-off part, 8 ... Tear-off member, 9 ... Synthetic resin layer, 10 ... Metal foil, 11 ... Metal sheet, 11
a...Outer periphery.

Claims (1)

[Scope of utility model registration request] Synthetic resin mounting part 1 attached to the mouth of the container
and a main body 3 composed of a spouting tube 2 integrally provided with the mounting portion 1; a mouth wall 4 integrally provided inside the main body 3 that blocks the flow of liquid; A downward tube 3a provided on the outer periphery to protrude downward; an endless fissure 5 formed in the mouth wall 4;
A tearing portion 6 formed inside the fissure groove 5;
A tearing member 8 is integrally provided on the inside of the pouring tube 2 at the upper part of the tearing part 6; A metal sheet 11 made of a metal foil 10 provided with a layer 9; an outer peripheral portion 11 of the metal sheet 11 insert-molded in the downward tube 3a;
A pouring cap for a container, characterized in that it is integrally molded by insert molding, and is formed by insert molding.