JP2000085811A - Cap unit for liquid container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep a certain seal-up capacity, without employing a seal-up method such as heat-sealing, for a pull-push cap equipped with a spout that is opened and closed by a pull-push type opening/closing mechanism, and to ensure tightness in sealing up for an article until the article is delivered to a consumer while enabling the article, if necessary, to be put under the sealed-up state similar to the state before unsealing even after the article is unsealed once by the consumer. SOLUTION: A pull-push cap 21 equipped with a spout 33 that is opened and closed by a pull-push type opening/closing mechanism and a pilfer-proof cap 12 equipped with a pilfer-proofing skirt part 14 to be engaged with a stepped part formed at the mouth/neck part 2 of a container are formed respectively as a screwed cap capable of being screwed down onto a male screw part 7 formed at the mouth/neck part 2 of the container and at the same time, the pull-push cap 21 is detachably attached to the upper part of the pilfer-proof cap 12 that is screwed down under the state of sealing-up onto the mouth/neck part 2 of the container.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pull-push cap (one-handed pull-push) which is screwed onto the mouth and neck of a bottle-shaped container containing a liquid such as a beverage (including a viscous substance such as honey). More particularly, the present invention relates to a cap unit for a liquid container in which a pill fur proof cap for sealing a mouth and neck of a container is integrally combined with such a pull push cap.

[0002]

2. Description of the Related Art As a cap with a spout provided for the mouth and neck of a bottle-shaped liquid container, a spout is opened and closed by a pull-push type opening and closing mechanism with respect to a cap portion with a screw cap. Is formed integrally, the operation of pulling or pushing the movable member of the spout portion with one hand (opening the spout by pulling and closing the spout by pushing) allows the A so-called pull-push cap that allows the provided spout to be opened and closed with one touch is conventionally known (for example,
JP-B-54-16326, U.S. Pat. No. 35998
No. 45, U.S. Pat. No. 5,328,063, Japanese Patent Application Laid-Open No. 9-30553, etc.). In a small PET bottle for storing beverages, honey, etc., such a pull push cap is already a commercial product. It is commonly used.

[0003] A liquid container opening / closing lid (pull push cap) described in the above-mentioned Japanese Patent Application Laid-Open No. 9-30553 is a first screwed-in screw at the mouth (mouth neck) of the liquid container. An upwardly extending cylindrical neck (pouring cylinder) is continuously formed integrally with the cylinder (skirt), and a button-shaped center is formed at the center of the ceiling of the neck (pouring cylinder). A land portion (plug portion) is formed, and a first portion is formed around the land portion (plug portion).
And a second cylinder (movable) having a second spout (pouring port) formed on the ceiling with respect to the neck (pouring cylinder) of such a cap. (A member) is inserted so as to be vertically slidable and frictionally engageable within the range of a slide area formed on the outer peripheral surface of the neck portion (pour-out tube portion).

In such a liquid container opening / closing lid (pull push cap), a second cylinder (movable member) is held with one hand.
By sliding (pulling / pushing) the button, a second spout (spout) formed in the second cylinder (movable member) becomes a button formed in the neck (pouring cylinder) of the cap. It is opened and closed by the land (plug) of the mold, and in the open state, the liquid in the container passes through the first spout (liquid passage) from the neck (pouring cylinder) of the cap to the second spout. The liquid is poured out of the container through the second pouring port (pouring port) of the cylindrical body (movable member).

On the other hand, separately from the above-described pull-push cap, a resin screw cap for sealing the mouth and neck of a bottle-shaped container is provided with a cuttable hem at the lower end of the skirt. By screwing the screw lid onto the mouth and neck of the container so as to engage with the step formed on the mouth and neck of the container, the hem portion is opened once the screw lid is opened from the unopened state. For so-called pill fur proof caps that have been cut and opened to make it clear,
Conventionally, various structures have been proposed. (For example, Japanese Utility Model Laid-Open No. 56-125848,
4445, JP-A-54-83588, JP-A-1-107557, JP-A-5-95862, etc.)

[0006]

By the way, as for the above-mentioned conventionally known pull-push cap (opening / closing lid of the liquid container), it is only the mouth-neck portion (mouth) of the liquid container.
In the case where the cap is provided, the spout (second spout) formed in the movable member (second cylinder) is connected to the spout cylinder (neck) of the cap.
Simply closing with a plug (button-shaped land) formed at the upper end does not ensure reliable sealing, and the product has not been opened before it reaches the consumer's hand. We cannot guarantee that.

[0007] Therefore, usually, the above-mentioned Japanese Patent Application Laid-Open No.
As shown in FIG. 1 by reference numeral 4 in Japanese Patent Publication No. 553, a sealing material is adhered to the upper end surface of the mouth and neck portion (mouth) of the liquid container by heat sealing or the like, so that At the same time that the container is sealed, it is ensured that the container has never been opened.

However, in a production line for bottled beverages using a general PET bottle as a container, almost no line adopts a sealing method using a sealing material. For example, heat sealers) generally have a lower processing speed per bottle than mechanical equipment (cappers) for applying caps. When a method (for example, heat sealing) is adopted, there is a disadvantage that the conveying speed of the bottling production line must be reduced accordingly.

[0009] Further, in the sealing of the sealing material by heat sealing or the like, after the consumer peels off the sealing material once and opens it, it is impossible to reliably expect the same sealing property as before the opening. If the liquid container is carried over for a long period of time or stored in a refrigerator for a long time even when the liquid container is lying down, there is a risk that the liquid in the container may leak slightly from the liquid outlet. .

An object of the present invention is to solve the above-mentioned problems. More specifically, a pull-push cap provided with a spout that can be opened and closed by a pull-push type opening / closing mechanism can be heat-sealed or the like. Without using a sealing method, it is possible to ensure that the product has not been opened until it reaches the consumer's hand, and after the consumer has once opened it. However, it is an object of the present invention to ensure the same sealing property as before opening if necessary.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a pull-push cap having a spout opened and closed by a pull-push type opening and closing mechanism,
A pill fur proof cap having a pill fur proof hem that can be engaged with a step formed on the mouth and neck of the container, and a male screw formed on the mouth and neck of the container. A pill fur proof cap which is formed as a screw cap which can be fitted together and which is screwed tightly to the mouth and neck of the container in a sealed state, and wherein a pull push cap is detachably attached to an upper portion thereof. .

According to the liquid container cap unit having the above-described structure, the sealing member for sealing is not attached to the mouth and neck of the container by heat sealing or the like, but is screwed to the mouth and neck of the container. The pill fur proof cap ensures a tight seal, and the pill fur proof cap hem is cut off when opening the container filled with the contents for the first time. It can guarantee that it has not been opened until it reaches the consumer's hand.

When the consumer uses the liquid container after opening the liquid container, the pill fur proof cap is removed from the mouth and neck of the container, and the pull push cap removed from the pill fur proof cap is screwed onto the mouth and neck of the container. By putting on, the spout of the pull-push cap can be opened and closed by a one-touch operation of pulling or pushing with one hand to easily pour out the contents.

In addition, by leaving the cap portion of the removed pill fur proof cap without throwing it away, it is possible to carry the container in which the contents are contained in a horizontal state for a long time or carry it in a refrigerator. If the pull-push cap is attached to the pill fur proof cap again, or if the pull-push cap is stored separately and the pill fur proof cap is screwed onto the mouth and neck of the container, In addition, the sealing property of the liquid container can be secured in the same manner as before opening, and the leakage of the contents can be reliably prevented.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a liquid container cap unit according to the present invention will be described below in detail with reference to the drawings.

FIGS. 1 to 5 show an embodiment of a cap unit for a liquid container according to the present invention. FIG. 1 shows the appearance of a cap unit before opening which is screwed to the mouth and neck of the liquid container. FIG. 2 shows the structure of each part of the cap unit shown in FIG. 1, and FIG.
FIG. 4 (A) and (B) show the appearance of a state in which the pull-push cap is screwed onto the mouth and neck of the container except for the pill fur proof cap after opening, and FIGS. 5A and 5B show the open / closed state of the pull push cap at the time, and FIGS. 5A and 5B show the structure of the cap body of the pull push cap.

The cap unit 1 for a liquid container according to the present embodiment comprises a mouth and neck 2 of a small PET bottle filled with a beverage or the like.
In each case, a pill fur proof cap 3, a pull push cap 4, and a cover cap 5 made of a synthetic resin are removably assembled.
A pull-push cap 4 is detachably attached to the upper part of a pill fur proof cap 3 screwed to the mouth and neck portion 2 of the container so as to cover the spout. The cover cap 5 is detachably attached.

As for the pill fur proof cap 3, a cylindrical portion 13 extending upward from the top plate portion 11 with respect to a cap portion including the top plate portion 11 and the skirt portion 12.
And a skirt portion 14 extending downward from the lower end of the skirt portion 12
And a female screw portion 15 screwed with the male screw portion 7 of the mouth-and-neck portion 2 of the container is formed on the inner surface of the skirt portion 12, and the female screw portion 15 An annular seal portion 16 is integrally formed on the lower surface of the top plate portion 11 so as to be in close contact with the upper end surface of the mouth and neck portion 2 of the container when the cap portion is completely screwed onto the mouth and neck portion 2 of the container. Is formed.

Such a pill fur proof cap 3
A cylindrical portion 13 for attaching the pull-push cap 4 is integrally provided upright from the top surface of the top plate portion 11 with respect to the cap portion, and a skirt portion 14 for pill fur proof can be cut. It is formed integrally with the lower end of the skirt portion 12 via a weakening line 17 and has the same outer diameter as the external thread portion 7 formed on the mouth and neck portion 2 of the container on the outer peripheral surface of the cylindrical portion 13. An external thread portion 18 having the same pitch is formed, and an inner surface of the skirt portion 14 is engaged with an engagement step 8 formed below the external thread portion 7 of the mouth and neck portion 2 of the container. The engagement piece 19 is formed integrally.

The pull-push cap 4 has a skirt 21 and a spout cylinder 2 via a stepped flange 23.
2 is integrally formed, and a plug portion 26 described later is
Cap body 20 formed at the center of the opening 2
And a cylindrical portion 31 and a ceiling portion 3 for closing the upper end of the cylindrical portion 31
2 comprises a movable member 30 having a spout 33 opened at the center thereof, and is slidable vertically with respect to the spout cylinder 22 of the cap body 20 within a range of a slide area 24 formed on the outer surface thereof. The cylindrical portion 31 of the movable member 30 is fitted so as to be frictionally locked, and the male screw portion 7 of the mouth and neck portion 2 of the container is provided on the inner surface of the skirt portion 21 of the cap body 20. A female screw portion 25 is formed so as to be screwable with the male screw portion 18 of the cylindrical portion 13 of the pill fur proof cap 3.

The pull-push cap 4 opens the container and attaches the pill fur proof cap 3 to the mouth and neck 2 of the container.
After being once removed from the pill fur proof cap 3, the screw is directly screwed to the mouth and neck 2 of the container as shown in FIG. The spout 33 is opened and closed by a one-touch operation of pulling or pushing with one hand.

As for the pull-push type opening / closing mechanism using the dispensing cylinder 22 and the movable member 30, the upper end of the dispensing cylinder 22 has a stopper 26 formed at the center as shown in FIG. A liquid passage 27 is formed in the periphery thereof, and the central plug portion 26 projects upward from the upper end surface of the pouring tube portion 22 as shown in FIG. 5B. Meanwhile, the ceiling part 32 of the movable member 30 is connected to the discharge cylinder part 22 by a partition part 28 between the liquid passages 27,
As shown in FIG. 4A, the lower surface of the peripheral portion is formed so as to be in close contact with the upper end surface of the cylinder of the pouring tube portion 22, and a spout 33 opened at the center thereof is provided with a plug of the pouring tube portion 22. It is adapted to be closed by a part 26.

According to such a pull-push type opening / closing mechanism, as shown in FIG.
From the closed state in which the spout 33 of the movable member 30 is closed by 6, an operation (pull operation) of picking the tubular portion 31 of the movable member 30 with one hand and pulling it out of the pouring tube 22 is performed. Thereby, the movable member 30 is slid along the axial direction of the pouring tube portion 22, and as shown in FIG. Is moved up to an open state, and from such an open state, an operation (push operation) of picking the cylindrical portion 31 of the movable member 30 and pushing it into the pouring tube portion 22 is performed. It is returned to the closed state as shown in A).

FIG. 4A shows the cover cap 5.
In the state where the spout 33 is closed as shown in FIG. 3, a step-like connecting the skirt portion 21 and the pouring tube portion 22 so as to cover the pull-push type opening / closing mechanism of the pull-push cap 4 as shown in FIG. A convex portion 35 for snap-fitting with an annular concave portion 29 formed on the outer peripheral surface of the flange portion 23 is fitted on the outer peripheral surface of the flange portion 23 and is provided on the inner surface of the lower end portion of the cover cap 5. Is formed.

According to the liquid container cap unit 1 of the present embodiment comprising the caps 3, 4 and 5 as described above, the sealing material is attached to the mouth and neck 2 of the container by heat sealing or the like. Even if the container is not provided, a reliable sealing property can be obtained by the seal portion 16 formed on the cap portion of the pill fur proof cap 3 screwed to the mouth and neck portion 2 of the container, and the container filled with the contents is provided. When opening the pillow for the first time, be sure to
Since 4 is cut, it can thereby ensure that the goods have not been opened until they have reached the consumer's hand.

When the consumer uses the liquid container after opening the liquid container, the pill fur proof cap 3 is removed from the mouth and neck 2 of the container, and the pull push cap 4 removed from the pill fur proof cap 3 is replaced with the container. Can be opened and closed by pulling / pushing the movable member 30 of the pull-push cap 4 with one hand, The contents can be easily dispensed with one touch.

In addition, by leaving the removed pill fur proof cap 3 (having the hem portion 14 removed) without throwing it away, for example, the container in which the contents are contained is kept lying down for a long time. When carrying or storing in a refrigerator, the pill fur proof cap from which the hem portion 14 has been removed may be in a state where the pull push cap 4 is attached, or in a state where the pull push cap is stored separately, By screwing the liquid container to the mouth and neck 2, the sealing property of the liquid container can be set to the same state as before opening, and the leakage of the contents can be reliably prevented.

In the present embodiment, the cover cap 5 is provided for the pull-push cap 4 so as to cover the pull-push type opening / closing mechanism. Even if the content liquid leaks from the gap or the spout 33, it does not leak out from the cover cap 5, and the spout 33 is cleaned by covering the spout 33 from the outside with the cover cap 5. Can be kept.

The embodiment of the liquid container cap unit of the present invention has been described above. However, the present invention is not limited to the above-described embodiment. For example, a pull push cap for the pill fur proof cap 3 may be used. Regarding the attachment of the pill fur proof cap 3, the pill fur proof cap 4 does not need to have the cylindrical portion 13 as shown in FIG. By fitting the inner surface of the lower end of the skirt portion 21 of the pull push cap 4, it is also possible to detachably attach it by snap engagement.

Further, an annular seal portion 16 formed on the lower surface of the top plate portion 11 of the pill fur proof cap 3, a cuttable weakening line 17 formed between the skirt portion 12 and the hem portion 14, Engaging piece 1 formed on the inner surface of portion 14
Regarding specific shapes such as 9 and the like, various types of conventional pill fur proof caps have been proposed, so that such a conventional shape can be appropriately selected and implemented. .

[0031]

According to the cap unit for a liquid container of the present invention as described above, a pull-push cap having a spout that is opened and closed by a pull-push type opening / closing mechanism employs a sealing method such as heat sealing. Without losing the seal, ensuring that the product has not been opened until it reaches the consumer's hand, Thus, the same sealing performance as before opening can be ensured.

[Brief description of the drawings]

FIG. 1 is a side view showing an appearance of a cap unit before being opened, which is screwed to a mouth and neck of a liquid container, according to an embodiment of the liquid container cap unit of the present invention.

FIG. 2 is a sectional view showing the structure of each part of the cap unit shown in FIG. 1;

FIG. 3 is a partial cross-sectional side view showing an external appearance of the cap unit shown in FIG. 1 in a used state in which a pull-push cap is screwed to a mouth and neck of a container except for a pill fur proof cap after opening.

FIG. 4 is a sectional view showing (A) a state in which a spout is closed and (B) a state in which the spout is opened in a state when the cap unit shown in FIG. 3 is used.

5A shows a structure of a cap body portion of a pull push cap in the cap unit shown in FIG. 1 (A).
FIG. 3B is a top view, and FIG. 3B is a cross-sectional view taken along line BB in FIG.

FIG. 6 is a cross-sectional view showing a state before opening the liquid container cap unit according to another embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 liquid container cap unit 2 container mouth and neck 3 pill fur proof cap 4 pull push cap 5 cover cap 7 male thread (of container mouth and neck) 11 top plate (of pilfer proof cap) 13 (pillar) Cylindrical part (of proof cap) 14 Hem part for pill fur proof 15 Female thread part (of pill fur proof cap) 18 Male thread part (of cylindrical part) 25 Female thread part (of pull push cap) 33 Spout

Claims (4)

[Claims] 1. A pull-push cap having a spout that can be opened and closed by a pull-push type opening and closing mechanism, and a pill fur proof hem that can be engaged with a step formed on the mouth and neck of the container. Pill fur proof cap and
For the pill fur proof cap, which is formed as a screw cap that can be screwed to the male screw part formed on the mouth and neck of the container, and screwed tightly to the mouth and neck of the container, A cap unit for a liquid container, wherein a pull push cap is detachably mounted on an upper part thereof. 2. The pull-push cap according to claim 1, wherein a cover cap is detachably attached to the pull-push cap so as to cover the pull-push type opening / closing mechanism in a state where the spout is closed. Liquid container cap unit. 3. A cylindrical part is integrally erected on an upper surface of a top plate part of a pill fur proof cap, and a female screw part of a pull push cap is formed on a male screw part formed on an outer peripheral surface of the cylindrical part. The cap unit for a liquid container according to claim 1 or 2, wherein the pull-push cap is detachably attached to the pill fur proof cap by being screwed together. 4. The pull-push cap is attached to and detached from the pill fur proof cap by fitting the inner surface of the lower end of the skirt portion of the pull-push cap to the outer surface of the upper end of the skirt portion of the pill fur proof cap. The liquid container cap unit according to claim 1, wherein the cap unit is attached so as to be capable of being attached.