JP2007168842A - Strapped cap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plastic cap free from fear of missing, usable by a single hand, and coupled to a tamper-evident band via a strap. <P>SOLUTION: The plastic cap consists of: a cap body including a ceiling and a skirt; and the tamper-evident band 4 integrally formed with the lower end of the skirt via a breakable weak part. The cap has the strap 5 formed, which has both ends coupled to the external surface of the skirt 11 and the tamper-evident band 4, respectively, and extends circumferentially along the external surface of the skirt 11. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a plastic cap in which a cap body and a tamper evidence band formed on the lower end of the cap body are connected by a strap. More specifically, the cap is prevented from being lost when the lid is opened, or can be used with one hand. It relates to plastic caps.

In a plastic cap consisting of a cap body and a tamper-evident band formed at the lower end of the cap body via a weakened portion and attached to the container mouth by a screw, in order to pour the contents, the cap and tamper-evity It is necessary to break the weakened part between the dent bands and to separate the cap body from the tamper evident band and remove it from the container mouth.
At this time, if the cap separated from the tamper evidence band is lost and cannot be resealed, or used outdoors, the cap must be held with one hand to drink from the container. , Drinking can be troublesome.

In order to solve such a problem, without completely separating the cap body from the tamper evidence band, a cap in which the tamper evidence band formed at the lower end of the cap body and the cap body are connected by a strap at the time of opening is provided. Are known.
For example, a cap body, a connecting band, and a sealing ring are connected in order from above, and are screwed into the mouth and neck of the bottle and mounted on one side of the lower side of the cap. To the upper end edge position of the sealing ring is provided with a vertically long notch, and the cap body of the notch at the position of the circumferential section line between the cap body and the connecting band above the notch. A connecting portion is provided at an adjacent position on the screwing direction side, a score line that can be cut from the connecting portion to the screwing direction side of the cap of the notch portion is provided, and the connection band below the notch portion and A connecting part is provided at a position adjacent to the sealing ring on the circumferential side of the sealing ring, on the screwing direction side of the cap, and from the connecting part to the screwing direction side of the cap. Severable score leading to Proposing a cap with a sealing ring, characterized in that a fixing portion is provided on the inner peripheral surface of the sealing ring and the sealing ring is fixed to the mouth neck of the bottle when the cap is screwed off. (Patent Document 1).

JP 2004-307006 A

  However, like the cap, the cap body, the connecting band (strap), and the sealing ring are connected in the vertical direction, and the connecting band is formed by breaking the score line or the bridging portion formed on the cap. In the aspect, it is necessary to completely break both the score line and the bridging part between the cap body and the connecting band and between the connecting band and the sealing ring (tamper evidence band). It is difficult to reliably break. Even if the score line etc. can be broken and the strap can be formed, especially when attaching the mouth to the cap and drinking the contents, the cut surface and the bridge part of the broken score line hit the mouth and the mouth feels bad There is also the problem of giving the impression.

  Accordingly, an object of the present invention is to provide a plastic cap in which a cap and a tamper-evident band which are usable with one hand are connected by a strap without causing the above-described problems and without being lost. .

According to the present invention, in the plastic cap composed of a cap body composed of a top plate portion and a skirt portion, and a tamper evidence band integrally formed through a weakened portion that can be broken at the lower end of the skirt portion, the outer surface of the skirt portion; Provided is a plastic cap characterized in that a strap that is connected to the tamper evident band at both ends and that extends in the circumferential direction along the outer surface of the skirt portion is formed.
According to the plastic cap of the present invention,
1. A guide part protruding in the radial direction is formed at the upper end of the tamper evident band, and the diameter of the guide part is approximately equal to or larger than the maximum diameter of the arc formed by the strap,
2. A breakable bridging part connected to the outer surface of the skirt part is formed between both ends of the strap,
3. In the connection part between the skirt part and the tamper evidence band at both ends of the strap, the breaking strength of the connection part with the skirt part is larger than the breaking strength of the connection part with the tamper evidence,
Is preferred.

According to the present invention, the tamper-evident band and the cap are connected by the strap, and the possibility of loss of the cap or accidental ingestion of the cap is effectively prevented, and the use with one hand becomes possible.
In addition, the cap, tamper evident band and strap can be molded integrally, and there is no need to form a strap during the opening operation, and the weakened part between the cap body and the tamper evidence band can be broken. Also, it has excellent openability.
In addition, even when the container mouth portion is directly put on the drink, there is an advantage that the mouth feel is not impaired because the strap does not have a cut surface or a large number of broken portions of the bridging portion.

In the plastic cap of the present invention, it is an important feature that both ends are connected to the outer surface of the skirt portion and the tamper evidence band, and a strap extending in the circumferential direction is formed along the outer surface of the skirt portion.
In the present invention, since the cap body and the tamper evidence band are connected by the strap, the weakened portion between the cap body and the tamper evidence band is broken at the time of opening, and the cap body is removed even when the cap is removed. Is connected to the tamper evident band with a strap, so that the cap body can be effectively prevented from being lost and can be used with one hand.

  In addition, since the strap that connects the tamper-evident band and the cap body is pre-formed on the outer periphery of the cap body, it is necessary to form a strap by breaking the score etc. when opening the cap like a conventional cap with a strap Therefore, the opening operation can be performed reliably, and the straps and skirts do not form cut surfaces or many bridging parts, and even if you drink with mouth directly, There is no such problem as badness.

In the plastic cap of the present invention, since the strap is positioned along the outer surface of the skirt portion, even if it is formed in advance, it is prevented from being caught and broken by contact with the outside. In addition, a guide part protruding in the radial direction is formed at the upper end of the tamper evident band, and the diameter of the guide part is set to be approximately equal to or larger than the maximum diameter of the arc formed by the strap so that the cap can be conveyed. In this case, since the guide portion first comes into contact with the outside, it is possible to effectively prevent the strap from being broken in combination with the above configuration.
Furthermore, by connecting the strap to the cap skirt with one or at most two to three bridging portions, the above-described effects can be expressed more efficiently. Since the formation of the part can be kept to the minimum necessary, the mouthfeel is not impaired even when drinking with the mouth directly. Moreover, when providing one bridge part, it is preferable to provide in the approximate middle of the both ends of a strap.

The present invention will be described in detail with reference to the accompanying drawings.
1 is a side view (right half) and a side sectional view (left half) of an example of a plastic cap of the present invention, FIG. 2 is a side sectional view of the cap shown in FIG. 1, and FIG. 4 is a top view of the cap shown in FIG. 4, FIG. 4 is a bottom view of the cap shown in FIG. 1, FIG. 5 is a side view of the cap shown in FIG. FIG. 7 is a top view of another embodiment of the plastic cap, FIG. 7 is a side view of a pouch container to which the plastic cap of the present invention is applied, and FIG. 8 is a side view of the spout shown in FIG. 9 is a side view of a state in which the cap of FIG. 1 is put on the spout of FIG. 7, and FIG. 10 is a side view of a state in which the cap in the state shown in FIG. FIG. 11 is a top view of the state shown in FIG.

The plastic cap of the present invention, indicated as a whole by 1, generally has a top plate portion 10, a cap 2 comprising a skirt portion 11 depending from the periphery of the top plate portion 10, and a lower end of the skirt portion 11 via a weakening portion 3. It consists of a tamper-evident band 4 (hereinafter referred to as “TE band”) formed integrally.
On the inner surface of the top plate portion 10 of the cap 2 are formed an inner ring 13 that is in close contact with the inner surface of a container mouth portion (not shown) and ensures sealing performance, and an outer seal portion 14 that is in contact with the outer surface of the container mouth portion. . Further, a screw portion 15 is formed on the inner surface of the skirt portion, and a knurled groove 16 is formed on the outer surface.

A projecting piece 20 is formed on the inner surface of the TE band 4 to engage with a protrusion formed at the container mouth and break the weakened portion 3 when opened. In addition, a guide portion 21 protruding in the radial direction is formed on the top of the TE band 4.
As apparent from FIGS. 1, 3, and 5, in the plastic cap 1, one end portion 5 a is continuous with the lower outer surface of the skirt portion 11, and the other end portion 5 b is the guide portion 21 of the TE band 4. A strap 5 is formed which extends in the circumferential direction along the outer surface of the skirt portion in the cap opening direction (counterclockwise direction in FIG. 3) from the cap body side end portion 5a.
The guide portion 21 of the TE band 4 has a diameter substantially equal to or larger than the maximum diameter of the arc 5ab formed by the strap 5 along the outer peripheral surface of the skirt portion 11, and in the drawing, has a diameter substantially the same as the arc 5ab formed by the strap. For this reason, the strap 5 does not protrude from the guide portion 21 when viewed from above, and it is effectively prevented that the strap 5 is caught and broken during transportation.

In order to open the cap of the present invention shown in the figure, the skirt portion 11 of the cap 2 is grasped and swiveled to raise the cap 2, so that the weakened portion 3 between the cap 2 and the TE band 4 Torn. Since the strap 5 extends from the cap main body side end portion 5a to the TE band side end portion 5b toward the opening direction of the cap, as the cap 2 is raised, the cap main body side end portion 5a of the strap is on the TE band side. It moves close to the end 5b and moves upward in the axial direction. For this reason, when the turning of the cap ends, the strap extends in the axial direction and does not hinder the removal of the cap from the container mouth.
Further, at the time of resealing, as the cap 2 is lowered, the arc of the strap 5 decreases along the outer surface of the skirt portion in the lid closing direction, and can return to the state shown in the figure again.

Moreover, in the plastic cap of this invention, the strap 5 can also be connected with the bridge | bridging part 23 to the outer surface of a skirt part like the other embodiment shown in FIG. As a result, when the strap is long, or when the cap main body side end and the TE band side end of the strap are separated from each other vertically, the strap is accidentally broken during transportation. Even if it is easy, the strap can be effectively prevented from breaking.
In this case, although it depends on the length of the strap, the diameter of the cap, and the like, the number of bridging portions is preferably one and at most about 2-3. This makes it easy to break the bridge as the cap rises when opened, and it is also effective to damage the mouth when the strap touches the mouth, such as when you put the mouth directly on the container and drink the contents. Can be prevented.

  In addition, in case you want to use the cap completely separated from the TE band, the skirt part at the end of the strap cap body side and the tamper evidence band side end and the connection part between the TE band and the skirt part It is preferable that the breaking strength of 5a is larger than the breaking strength of the connecting portion 5b with the tamper evidence. In other words, even if the consumer pulls the cap out of the TE band, keep the TE band side connected part broken and keep the strap on the cap side after the break. However, it is preferable because the strap does not interfere with the dispensing.

  In the plastic cap of the present invention, as shown in the specific examples shown in FIGS. 1 to 4, the strap substantially goes around the outer surface of the skirt part substantially horizontally from the lower part of the cap skirt part to the upper part of the guide part of the TE band. In addition to the above, by changing the length of the arc formed along the skirt part according to the diameter or height of the cap, or by changing the position of the end part on the cap body side of the strap, the length and position thereof can be adjusted. Can be changed.

The plastic cap of the present invention can be integrally molded by injection molding or the like using a resin conventionally used for plastic caps such as polyethylene and polypropylene.
The plastic cap of the present invention can be applied to various containers, but can be suitably used for spouts of small plastic bottles and flexible pouches, which are often directly put on the mouth and drink and reseal.

  For example, referring to FIGS. 7 to 9 showing a spout of such a pouch container, the spout 30 of this container has a screw part 30, a jaw part 32, a ring-shaped holding part 33, and a pouch weld part 34. A flange 35 is provided at the upper end portion of the pouch welded portion 34. The above-described plastic cap of the present invention (generally indicated by 50) is attached to the screw portion of the spout 30.

  In the present invention, for example, a notch 37 may be provided in each of the ring-shaped holding portion 33 of the spout 30 and the flange 35 at the upper end of the pouch welded portion 34 so as to align with each other in the axial direction. preferable. That is, in the present invention, when the cap 50 is opened, the cap 50 removed from the spout is connected to the TE band 4 remaining on the spout 30 side by the strap 5 described above. If it hangs down, it may interfere with the pouring of the content liquid such as drinking from the spout 30. However, if the notch 37 is provided as described above, the lower end of the skirt portion of the cap 50 hanging from the spout 30 (TE band 4) is formed in a ring shape as shown in FIGS. The holding part 33 and the pouch welding part 34 can be fitted and fixed in the notches 37 formed in the flanges 35 at the upper ends, respectively, and the hanging cap 50 prevents the liquid from being poured out of the spout 30. There is no.

  The notches 37 as described above are preferably formed at two positions for each of the ring-shaped holding portion 33 and the flange 35. That is, if the notches 37 are formed at two positions, the skirt portion can be easily fitted into the notches 37 and fixed regardless of the position where the cap 50 hangs down. It is.

It is the side view (right half) and side sectional view (left half) of an example of the plastic cap of this invention. It is a sectional side view of the cap shown in FIG. It is a top view of the cap shown in FIG. It is a bottom view of the cap shown in FIG. It is the side view seen from the strap connection part side of the cap shown in FIG. It is a top view of other embodiment of the plastic cap of this invention. It is a side view of a pouch container to which the plastic cap of the present invention is applied. It is a side view of the spout shown in FIG. It is a side view of the state which put the cap of FIG. 1 on the spout of FIG. FIG. 10 is a side view showing a state where the cap in the state shown in FIG. It is a top view of the state shown in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Plastic cap, 2 cap, 3 weakening part, 4 tamper evident band, 5 strap, 5a cap main body side edge part, 5b TE band side edge part, 10 top plate part, 11 skirt part, 21 guide part 22 guide part upper surface.

Claims (4)

In a plastic cap composed of a cap body composed of a top plate portion and a skirt portion, and a tamper evidence band integrally formed through a weakened portion that can be broken at the lower end of the skirt portion,
A plastic cap, wherein both ends of the skirt portion are connected to the outer surface of the skirt portion and a tamper evidence band, and a strap extending in the circumferential direction is formed along the outer surface of the skirt portion.   The guide part which protruded in the radial direction is formed in the upper end of the said tamper-evidence band, The diameter of the said guide part is a magnitude | size substantially equal to or more than the largest diameter of the circular arc which a strap forms. Plastic cap.   The plastic cap according to claim 1 or 2, wherein a breakable bridging portion connected to an outer surface of the skirt portion is formed between both end portions of the strap.   The rupture strength of the connection part with a skirt part is larger than the rupture strength of the connection part with a tamper evidence band in the connection part with a skirt part and a tamper evidence band in the both ends of the strap. Plastic cap according to crab.

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