JP4354211B2 - Spout cap - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cap for a spout, and more particularly, a cap that is screwed into a spout attached to an upper portion of a liquid paper container, and can be easily removed even with a small force, particularly when the attached cap is removed. In addition to the usual vertical anti-slip strips provided on the outer peripheral surface of the cap peripheral wall so that it can be removed, the cap of the spout provided with auxiliary means for removing the cap on the upper surface of the cap .
[0002]
[Prior art]
Conventionally, a liquid paper container used for the liquid contents of foods such as various beverages or non-foods has been provided with a spout with a cap on the top of the container in order to improve sealing safety and ease of use. It was.
As such a spout with a cap, a screw-type cap is generally attached to the spout, and the spout is usually a liquid paper container on the outer periphery of the base centering on the spout cylinder. A flange portion that is thermally bonded to the mounting hole is extended, and a sealing plate with a pull ring that can be cut out through an annular thin wall portion is provided inside, and an upper portion of the dispensing cylinder portion The outer peripheral surface is configured by providing a screw portion for mounting the cap, and the cap to be mounted on the outer surface mainly has a circular top plate and continuously extends downward on the outer periphery thereof. A screw portion that is screwed into a screw portion provided on the upper outer peripheral surface of the dispensing tube portion of the spout port, and the outer peripheral surface of the peripheral wall includes: Anti-slip for easy cap installation and removal Structure in which a longitudinal direction of the concavo-convex conditions of common.
[0003]
It is not limited to the cap for the spout of a liquid paper container, but various bottles, tube containers, etc. are provided on the outer peripheral surface of the screw-type cap peripheral wall in the vertical direction (direction orthogonal to the rotation direction) for preventing slippage. It has been used for a long time with caps of a wide range of containers, and is normally used as a means for facilitating opening in normal use.
Such a vertical uneven strip for preventing slipping is naturally adopted as a necessary component even in a cap that is screwed into a spout attached to a liquid paper container. There are no special effects other than preventing slipping during attachment and removal of the heel and cap and facilitating the attachment and removal operations. Is shown (for example, see Patent Document 1).
[0004]
However, the spouts and screw caps attached to the liquid paper container have a relatively small diameter and are generally small in size as a whole. The outlet is fitted with a mechanically screwed cap. Therefore, the cap is strongly screwed, and a relatively large force is required when removing the cap for the first time, and it becomes difficult for the elderly and the like to open with only the vertical uneven strips for preventing slippage. There was a problem.
[0005]
In order to solve such a problem, it is necessary to provide some auxiliary means for further facilitating the removal of the cap in addition to the vertical ridges for preventing slipping. As a specific example of the above auxiliary means, there is a method of increasing the outer diameter of the cap and making it easy to open using the action of the lever. However, if the outer diameter of the cap is increased, in the case of a liquid paper container, the spout is attached. Usually, since the flange portion provided at the base portion is thermally bonded to the paper container, if a cap is previously attached to the spout, the upper portion of the flange portion is covered with a large cap, making it difficult to perform the heat bonding operation. There is a problem, so if the spout is thermally bonded to the liquid paper container first, and then the cap is screwed onto the spout, then the manufacturing process of the liquid paper container increases, and the spout and There was a problem that the cap attaching device was also large. In addition, when the entire cap is enlarged, the amount of resin used is increased more than necessary, which is disadvantageous in terms of cost.
[0006]
In addition, as another example of the auxiliary means, a separate spout plug that is not provided in the cap itself, but is attached by inserting a screw portion into a mounting hole provided in the liquid paper container and tightening the screw portion. In addition, when installing the spout stopper, it can be attached without requiring a large force. When the used liquid paper container is disassembled and collected separately, the spout stopper can be easily removed and reused. As a spout stopper, a flange portion is provided at the lower end of a pour tube having a lid portion that opens and closes via a hinge portion at the upper end, and an inverted conical tube that is squeezed downward from the pour tube below the flange portion. There is a spout plug in which a body is extended, a threaded portion is formed on the outer peripheral surface of the cylindrical body, and one or more pairs of turning projections are erected at a position opposed to the upper surface of the flange portion. (For example, refer to Patent Document 2).
[0007]
However, applying the pair of turning protrusions as described above to the cap, for example, even if a pair of turning protrusions are provided on the outer peripheral surface of the cap side wall, it is easy to remove and attach the cap, but the cap Since the lateral outer shape of the cap becomes larger at the portion of the projection for rotation, when the spout with the cap attached in advance is attached to the liquid paper container by thermal bonding, as in the case of increasing the outer diameter of the cap. However, there is a problem that the heat bonding operation becomes difficult, the manufacturing process of the liquid paper container is increased, and the spout and the cap attaching device are made large.
[0008]
[Patent Document 1]
JP 2002-19814 (pages 3 to 4, FIG. 1)
[Patent Document 2]
JP 2000-25812 (page 2, FIG. 1)
[0009]
[Problems to be solved by the invention]
The present invention has been made to solve such a problem, and the object thereof is a cap that is screwed into a spout attached to the upper part of the liquid paper container, With the cap already attached to the spout, it can be easily inserted into the spout mounting hole on the top of the liquid paper container and attached by thermal bonding, increasing the manufacturing process of the liquid paper container. In addition, there is no need to make the spout and the cap attachment device large, and when attaching and detaching the attached cap from the spout, a large force is not required. An object of the present invention is to provide a spout cap with excellent productivity and economy, which can be easily attached to and detached from a person with weak force by rotating the cap.
[0010]
[Means for Solving the Problems]
The above problems can be solved by the following present invention.
That is, the invention described in claim 1Govel top typeA cap screwed into a spout attached to the upper part of the liquid paper container, the cap having at least a top plate and a peripheral wall continuously extending from the top plate, the peripheral wall A threaded portion that is screwed into the spout is provided on the inner peripheral surface of the inner peripheral surface, and an outer circumferential surface of the peripheral wall is provided with a vertical concavo-convex strip for preventing slipping when the cap is rotated and attached, Furthermore, auxiliary means for facilitating attachment / detachment by rotation of the cap does not protrude from the outer surface of the cap's top plate or a part of the outer surface of the peripheral wall from the outer shape of the cap. Shape, andBetween the top plate of the cap and the peripheral wall, the corner is chamfered to provide an inclined portion, which is formed by a plurality of hemispherical small protrusions provided on the outer surface of the inclined portion. The attached cap has a shape that does not protrude laterally or upward from the outer shape of the gobeltop type liquid paper container.Consists of cap of spout cap.
[0011]
In the present invention, the spout to which the cap is attached is not particularly limited, and a spout generally used for a liquid paper container, for example, a liquid tube container around the base portion of the spout tube portion. A flange portion thermally bonded to the mounting hole is extended, and a sealing plate with a pull ring is provided inside the base portion so that it can be cut through an annular thin wall portion. The flange portion extends to the outer periphery of the base portion, at least around the extraction tube portion, such as a spout having a screw portion for screwing and mounting the cap on the upper outer peripheral surface, Any spout can be used as long as it has a threaded portion for screwing and attaching a cap to the upper outer peripheral surface of the dispensing cylinder.
The liquid paper container to which the spout is attached is not particularly limited, and any of a paper top type container and a flat top type paper container can be used.
[0012]
Further, as an auxiliary means for facilitating the attachment / detachment of the cap by rotation, it has a better anti-slip effect than at least the vertical uneven strip provided on the outer peripheral surface of the cap peripheral wall, and the cap is strongly gripped and rotated. A shape that can concentrate the force for removing the cap on the rotation of the cap, or a shape that can use the action of the lever, and that does not protrude greatly from the outer shape of the peripheral wall of the cap. Any design can be provided.
As a specific example of such an auxiliary means, for example, (1) a plate-like knob projecting vertically on the outer surface of the cap top plate, and (2) projecting vertically on the outer surface of the cap top plate. An annular body provided with a hole into which a rod-like body can be inserted at the center, and (3) a concave groove which is engraved on the outer surface of the top plate of the cap so that a disc body such as a coin can be inserted upright, Alternatively, (4) a plurality of small protrusions provided on the outer surface of the inclined portion chamfered at the corner between the top plate and the peripheral wall of the cap, and the like can be provided as auxiliary means.
[0013]
By adopting the configuration as described above, the cap of the spout according to the present invention prevents slipping when the cap is screwed onto the tip of the spout and attached and when the attached cap is removed. And an auxiliary means for facilitating attachment / detachment of the cap by rotating the cap on the outer surface of the top plate of the cap or a part of the outer surface of the peripheral wall. However, when the spout is attached to the upper portion of the liquid paper container with its flange portion by heat bonding, the cap is previously attached to the spout. Even if it is installed, the cap will not interfere with heat bonding or other spout installation work. Use the conventional spout attachment device with a cap or just modify a part of it. It can be attached easily thermally bonded.
In addition, regarding a device in which a cap is screwed in advance to the tip of the spout, a conventional device can be used as it is, or it can be used simply by modifying a part thereof.
[0014]
Therefore, since it is not necessary to separately attach the spout and the cap to the liquid paper container, it is not necessary to increase the manufacturing process of the liquid paper container, and it is not necessary to make the spout and cap attachment device large. Similar to a conventional liquid paper container with a cap-attached spout, a liquid paper container with a spout and a cap attached can be manufactured with high productivity.
In addition, when attaching and detaching the attached cap from the spout, it is easy to attach and detach by turning the cap in addition to the vertical uneven strip for preventing slippage provided on the outer peripheral surface of the peripheral wall of the cap. Since the auxiliary means is provided, even a weak person such as an elderly person can easily rotate and remove the cap.
In addition, by adopting such a configuration, auxiliary means for facilitating attachment / detachment by turning the cap provides a sloped portion by chamfering a corner between the top plate and the peripheral wall of the cap. Since it is formed by a plurality of small protrusions provided on the outer surface of the inclined portion, for example, when removing the cap that is screwed into the spout, it is more effective for the finger pinching the cap to slide Can be prevented. Accordingly, since the force applied to the cap can be concentrated on the rotation of the cap, even a person with weak force can attach and detach the cap more easily.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the spout cap of the present invention will be described in more detail with reference to the drawings.
1-4 is a figure which shows the structure of one Example of the cap of the spout of this invention, respectively, (A) is the front view, (B) is the side view, (C) is the figure. It is a top view.
FIG. 5 is an enlarged cross-sectional view showing an example of the configuration of the spout to which the cap of the spout of the present invention is screwed.
FIG. 6 is a side view showing the shape of an example of the liquid paper container to which the cap of the spout of the present invention is attached.
In addition, this invention is not limited to these drawings, unless the summary is exceeded.
[0026]
FIG. 1 shows a first of the spout cap of the present invention.Reference exampleAs shown in (a), (b) and (c) of FIG. 1, the cap 100 of the spout is a top plate 1 and a peripheral wall 2 which is continuously suspended from the outer periphery thereof. Although not shown in the drawing, the inner peripheral surface of the peripheral wall 2 is provided with a screw portion that is screwed into a screw portion provided on the outer peripheral surface of the spout (see, for example, FIG. 5). The outer circumferential surface of the peripheral wall 2 is provided with a vertical uneven strip 3 for preventing slipping when the cap 100 is rotated to be attached to and detached from the spout. Further, the cap 100 is provided on the outer surface of the top plate 1 of the cap 100. As an auxiliary means for further facilitating attachment / detachment by rotation, a plate-like knob portion 4 is configured to protrude vertically upward so as not to protrude laterally from the outer shape of the peripheral wall 2.
[0027]
By adopting such a configuration, the plate-like knob portion 4 of the auxiliary means is provided so as not to protrude laterally from the outer shape of the peripheral wall 2 of the cap 100. At the time of attachment, even if the cap 100 is previously attached to the spout, the cap 100 does not interfere with the attachment, and the spout can be easily attached to the liquid paper container by thermal bonding. Therefore, since it is not necessary to separately attach the spout and the cap 100 to the liquid paper container, the liquid paper container can be manufactured with high productivity without increasing the manufacturing process.
In addition, when using the contents filled in the liquid paper container, the cap 100 can be rotated by pinching the plate-like knob portion 4 with a finger when removing the cap 100 attached to the spout. The cap 100 can be easily removed even by a weak person without the finger slipping.
[0028]
FIG. 2 shows a second view of the spout cap of the present invention.Reference example2 is a view showing the configuration of the spout cap 200 shown in FIGS. 2A, 2B, and 2C, in the configuration of the spout cap 100 shown in FIG. Only the plate-like knob portion 4 provided as an auxiliary means for facilitating attachment / detachment by movement, and the annular body 5 provided with a hole 6 into which a rod-like body can be inserted at the center, are laterally extended from the outer shape of the peripheral wall 2. In this case, the shape is changed to a shape projecting vertically upward so as not to protrude, and all other configurations are formed in the same manner as the spout cap 100 shown in FIG. .
[0029]
Even when such a configuration is adopted, the annular body 5 of the auxiliary means does not protrude laterally from the outer shape of the peripheral wall 2 of the spout cap 200. Even if 200 is attached to the spout, the cap 200 does not get in the way, and the spout can be easily attached to the liquid paper container by thermal bonding. Therefore, the liquid paper container can be manufactured with high productivity without increasing the manufacturing process.
Also, when removing the cap 200 attached to the spout, the cap 200 can be rotated and removed using the action of the lever by inserting a rod-like body into the hole 6 of the annular body 5 and turning it. The cap 200 can be attached and detached more easily even by a person with weak power.
[0030]
FIG. 3 shows a third view of the spout cap of the present invention.Reference example3 is a diagram illustrating the configuration of the spout cap 300 shown in FIGS. 3A, 3B, and 3C, in the configuration of the spout cap 100 shown in FIG. Only the plate-like knob portion 4 provided as an auxiliary means for facilitating attachment / detachment by movement is engraved on the outer surface of the top plate 1 of the cap 300 and can be inserted with a disc body such as a coin upright. It is configured by changing to the groove 7, and all other configurations are formed in the same manner as the spout cap 100 shown in FIG.
In addition, although the said groove | channel 7 showed the example of the 1 character shape in the figure, shapes, such as a cross shape, may be sufficient.
[0031]
Even when such a configuration is adopted, the concave groove 7 of the auxiliary means naturally does not project laterally from the outer shape of the peripheral wall 2 of the cap 300 of the spout, so that when the spout is attached to the liquid paper container, the cap is previously provided. Even if 300 is attached to the spout, the cap 300 does not get in the way, and the spout can be easily attached to the liquid paper container by thermal bonding. Therefore, the liquid paper container can be manufactured with high productivity without increasing the manufacturing process.
Also, when removing the cap 300 attached to the spout, a disc body such as a coin is put upright in the groove 7 and rotated in the horizontal direction. Since it can be rotated and removed, even a person with weak power can easily attach and detach the cap 300.
[0032]
FIG. 4 shows the cap of the spout of the present invention.First4 is a diagram showing the configuration of the spout cap 400 shown in FIGS. 4A, 4B and 4C, in the configuration of the spout cap 100 shown in FIG. Only the plate-like knob portion 4 provided as an auxiliary means for facilitating the attachment / detachment by turning the cap is chamfered between the top plate 1 and the peripheral wall 2 of the cap 400 to form the inclined portion 9. 1 and is formed by changing the shape of the inclined portion 9 to a shape in which a plurality of small protrusions 8 are provided. All other configurations are formed in the same manner as the spout cap 100 shown in FIG. It is composed.
[0033]
Even when such a configuration is adopted, the plurality of small protrusions 8 are provided so as not to protrude laterally from the outer shape of the peripheral wall 2 of the spout cap 400, so that the spout is attached to the liquid paper container. At this time, even if the cap 400 is previously attached to the spout, the cap 400 does not interfere with the spout attachment, and the spout can be easily attached to the liquid paper container by thermal bonding. Therefore, the liquid paper container can be manufactured with high productivity without increasing the manufacturing process.
In addition, when removing the cap 400 attached to the spout, it is possible to more effectively prevent the fingers holding the cap 400 from sliding by the plurality of small protrusions 8, so that the force applied to the cap 400 is applied to the cap 400. It is possible to concentrate on the movement, and even a person with weak power can attach and detach the cap 400 more easily.
[0034]
As described above, the spout cap of the present invention as shown in FIGS. 1 to 4 is, for example, a polyethylene resin, polypropylene resin, polystyrene resin, acrylonitrile-styrene copolymer (AS resin), acrylonitrile-butadiene- A styrene copolymer (ABS resin), a polycarbonate resin, and other thermoplastic molding resins can be used and molded by means such as injection molding or compression molding.
Although not shown in the figure, the inner surface of the top plate of the spout cap of the present invention may be provided with packing or the like in order to improve the sealing performance at the time of resealing. An inner ring that is in contact with the inner peripheral surface of the extraction tube portion may be provided vertically.
[0035]
Next, FIG. 5 is an enlarged cross-sectional view showing an example of the structure of the spout to which the cap of the spout of the present invention is screwed and attached. The spout 50 shown in FIG. And a flange portion 12 that is thermally bonded to the periphery of the mounting hole of the liquid paper container via the base 11 on the outer periphery of the base portion (lower end portion in the figure). A sealing plate 14 is provided with a pull ring 15 standing upright so that it can be cut off through the annular thin-walled portion 13, and a cap is screwed onto the upper outer peripheral surface of the dispensing tube portion 10. A screw portion 16 is provided.
[0036]
When the spout 50 is attached to the liquid paper container, the spout cylinder portion 10 of the spout 50 is inserted into the mounting hole of the spout 50 provided in the upper surface plate 17 of the liquid paper container from the inside. The inner surface of the upper surface plate 17 of the liquid paper container and the outer surface (upper surface in the figure) of the flange portion 12 of the spout 50 are brought into contact with each other, and are usually thermally bonded in a ring shape by ultrasonic sealing.
[0037]
Therefore, at least the outer surface of the flange portion 12 of the spout 50 needs to be formed of a resin that can be thermally bonded to the innermost sealant layer of the top plate 17 of the liquid paper container by ultrasonic sealing. For example, when a polyethylene-based resin such as polyethylene is used for the innermost sealant layer of the liquid paper container, it is preferable to form at least the outer surface of the flange portion 12 of the spout 50 using the polyethylene-based resin.
Such a spout 50 is usually manufactured by being molded by an injection molding method. For example, when the outer surface of the flange portion 12 and other portions are formed of different resins, an insert injection molding method or two It can be manufactured by molding by a color molding method or the like.
[0038]
In addition, when such a spout 50 is inserted from the inside into a mounting hole of the spout 50 provided on the upper surface plate 17 of the liquid paper container and thermally bonded, the manufacturing process is simplified as described above. Therefore, the caps 100 to 400 are inserted into the mounting holes in a state where the caps 100 to 400 are screwed into the spout 50 in advance, and auxiliary means for facilitating the attachment and detachment of the caps 100 to 400 is provided. If it is provided in a shape that protrudes laterally larger than the outer shape of the peripheral wall of the cap, the spout 50 cannot be inserted into the mounting hole, and the spout 50 and the cap need to be attached separately. Accordingly, it is not preferable because the number of manufacturing steps is increased and the attachment device becomes large, which is disadvantageous in terms of productivity and economy.
[0039]
FIG. 6 is a side view showing an example of the shape of a liquid paper container to which the cap of the spout of the present invention is attached. The liquid paper container 60 has a main body portion 61 of the liquid paper container in a carvel top type carton format. An upper hole plate having a gable roof shape formed thereon, that is, a spout mounting hole is provided at a substantially central portion of the upper surface plate 17 of the liquid paper container, and the mounting hole having the configuration shown in FIG. The outlet 50, which is preinstalled with a spout cap 100 of the configuration shown in FIG. 1 screwed into the outlet cylinder portion 10, is inserted from the inside and is attached by thermal bonding with an ultrasonic seal. The liquid content is filled from the opening, and then the upper opening is folded and heat-bonded in the form of a palm.
[0040]
FIG. 6 shows an example in which the spout cap 100 having the configuration shown in FIG. 1 is used as the spout cap. However, the spout cap 200 having the configuration shown in FIGS. 300 and 400 can be used similarly.
Further, the main body of the liquid paper container is not limited to the gobeltop type, and may be a flat top type carton.
只 When the main body of the liquid paper container is formed in a gobel top type, the attached spout and cap are located upward in the lateral direction from the outer shape of the liquid paper container 60 as indicated by broken lines in FIG. Since it can be formed in a shape that does not protrude, the spout and the cap are not damaged during transportation, and can be used more safely.
[0041]
【Example】
Below are specificReference examples andThe present invention will be described in more detail with reference to examples.
(Reference example 1)
The cap of the spout shown in FIG. 1 is formed by injection molding using polypropylene so that the outer diameter of the cap body (peripheral wall) is 23 mm and the total height including the plate-shaped knob is 20 mm. do itReference example 1A spout cap was prepared.
[0042]
(Reference example 2)
The cap of the spout shown in FIG. 2 is molded by injection molding using polypropylene so that the outer diameter of the cap body (peripheral wall) is 23 mm and the total height including the annular body is 21 mm.Reference example 2A spout cap was prepared.
The hole at the center of the annular body was a circle with a diameter of 6.5 mm.
[0043]
(Reference example 3)
The cap of the spout shown in FIG. 3 is made of polypropylene by injection molding, and the outer diameter of the peripheral wall of the cap is 23 mm, the height is 13 mm, the groove has a width of 2 mm and a depth of 1 at the deepest part. Molded to 8mmReference example 3A spout cap was prepared.
[0044]
(Example 1)
The cap of the spout shown in FIG. 4 is made of polypropylene by injection molding, the outer diameter of the peripheral wall of the cap is 23 mm, the height is 13 mm, the inclination angle of the inclined portion is about 45 °, and the length of the hypotenuse is 4 mm, and formed into a shape in which six hemispherical small protrusions having a radius of 1.8 mm are provided at equal intervals on the inclined portion.Example 1A spout cap was prepared.
[0045]
Produced as aboveReference Example 1 to Reference Example 3, Example 1The cap of the spout is attached to the spout cylinder portion of the spout having the configuration shown in FIG. 5 made by injection molding polyethylene, and then the shape shown in FIG. A spout equipped with the cap of the first to fourth embodiments is inserted from the inside into a spout mounting hole provided on one upper surface plate of a gobeltop type liquid paper container (capacity 1800 ml, bottom surface 85 mm × 85 mm). Then, when the outer surface of the flange portion of the spout and the innermost sealant layer of the top plate of the paper container are brought into contact with each other and thermally bonded by ultrasonic sealing, both insert the spout into the spout mounting hole, In addition, thermal bonding by ultrasonic sealing could be performed well.
After the spout is attached, 1800 ml of water is filled as the contents from the opening at the top of the liquid paper container, and the top of the paper container is heat-bonded in a conventional manner and sealed in a gas-filled form. A liquid paper container filled with contents was prepared.
The liquid paper container produced as described above was installed by screwing it into the spout.Reference Example 1 to Reference Example 3, Example 1As a result of examining the ease of removing the caps of the spouts by using the auxiliary means provided by each of the following methods, all of the conventional caps were provided with only vertical ridges on the outer peripheral surface of the peripheral wall of the cap. It was easy to remove compared to
[0046]
(How to remove the cap)
Reference example 1The cap of the spout was removed by a method of rotating the cap by pinching the plate-like tab with a finger.
Reference example 2The cap of the spout was removed by inserting chopsticks into the annular hole and rotating the cap.
Reference example 3The cap of the spout was removed by a method in which a 10-yen coin was placed in a concave groove provided on the outer surface of the top plate and the insertion cap was rotated.
Example 1The cap of the spout is removed by a method of pinching and rotating the cap so that the small projection provided on the inclined part formed by chamfering the corner between the top plate and the peripheral wall is pinched with fingers. It was.
[0047]
【The invention's effect】
As described above in detail, according to the present invention, a cap is screwed into a spout attached to an upper portion of a liquid paper container, and the liquid paper is attached to the spout in advance. Can be easily inserted into the spout attachment hole at the top of the container and attached by thermal bonding, without increasing the manufacturing process of the liquid paper container. It is not necessary to make it large, and when removing or attaching the cap attached to the spout, it does not require a large force, and even a weak person such as an elderly person can easily rotate the cap. There is an effect that it is possible to provide a spout cap that is excellent in suitability for use as well as productivity and economy.
[Brief description of the drawings]
FIG. 1 shows a first of a spout cap of the present invention.Reference example(A) is a front view thereof, (b) is a side view thereof, and (c) is a plan view thereof.
FIG. 2 shows a second of the spout cap of the present invention.Reference example(A) is a front view thereof, (b) is a side view thereof, and (c) is a plan view thereof.
FIG. 3 shows a third of the spout cap of the present invention.Reference example(A) is a front view thereof, (b) is a side view thereof, and (c) is a plan view thereof.
FIG. 4 shows the cap of the spout of the present invention.FirstIt is a figure which shows the structure of this Example, (A) is the front view, (B) is the side view, (C) is the top view.
FIG. 5 is an enlarged sectional view showing a configuration of an example of a spout to which a cap of the spout of the present invention is screwed and attached.
FIG. 6 is a side view showing the shape of an example of a liquid paper container with a spout cap of the present invention attached thereto.

Claims (1)

A cap that is screwed into a spout attached to an upper part of a gobeltop type liquid paper container, and the cap has at least a top plate and a peripheral wall that is continuously suspended from the top plate. A threaded portion that is screwed into the spout is provided on the inner peripheral surface of the peripheral wall, and a vertical concavo-convex strip for preventing slipping when the cap is rotated to be attached and detached is provided on the outer peripheral surface of the peripheral wall. Further, auxiliary means for facilitating attachment / detachment by rotation of the cap is provided laterally from the outer shape of the peripheral wall of the cap on the outer surface of the top plate of the cap or a part of the outer surface of the peripheral wall. A plurality of hemispherical small protrusions provided on the outer surface of the inclined portion, each having a shape that does not protrude greatly, and a chamfered corner portion is provided between the top plate and the peripheral wall of the cap. Formed and the cap mounted on the spout is Cap spout, characterized in that from the gable top type liquid paper container outer a shape that does not protrude upward in the transverse direction.

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