JPH0558655U - Container with a cap that has an unsealing function - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] Prior to breaking the sealability between the cap and the container mouth when opening, the weakened part is surely broken and the TE band is separated from the cap body to ensure TE Performs its function and easily closes the cap while preventing the weakened part from breaking. [Structure] An inner ring of a TE band (6) is provided with an annular projection (10) having a ridge on its upper side so as to be positioned below a bead (9) provided on a container mouth (8) when the container is closed. A bead 9 is provided on the lower side of the bead 9, and when the cap 1 is opened, the bead 9 and the upper bead of the annular protrusion 10
The lower ridges are engaged.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a cap having a function of clearly indicating opening (hereinafter, simply referred to as TE (tamper evidence)), and more specifically, a tamper evidence band ( The present invention relates to a container with a cap having a TE function in which a TE band) is cut from a cap body and can be easily closed, and a weakened portion is prevented from being broken by the closure.

[0002]

[Prior Art]

 Conventionally, there is known a cap having a TE function that can determine whether or not the cap is once opened by a TE band. With this cap, it can be seen that once the cap is opened, the TE band is cut and divided from the cap body, and the cap is opened at a glance. In such a screw cap that rotates and opens the cap, a liner material or the like is provided on the inner surface of the cap, and the liner material and the container mouth are sealed to maintain the container hermeticity.

As a method for cutting and dividing the TE band from the cap body, a flap projecting inward is provided on the inner surface of the TE band, and the flap is engaged with the bead of the container mouth to move the TE band upward. (Japanese Patent Publication No. 58-32105) or a protrusion provided on the inner surface of the TE band and a protrusion provided below the mouth of the container prevent the TE band from rotating (Japanese Patent Publication No. 52-14677). Gazette) etc. are known.

[0004]

[Problems to be solved by the device]

 However, in the former TE band, which has a structure in which the TE band and the bead are stopped in the vertical direction, due to the positional relationship between the TE band and the bead of the container and the elastic deformation of the resin, the cap slightly starts to rotate. The weakened part will be broken when the upper part moves upward.In such a case, the sealability between the inner surface of the cap top plate and the container mouth will come first before the weakened part is broken. Will be destroyed by. That is, in the screw type resin cap, when cutting the weakened part by lifting the screw, it is necessary to lift the cap by about 2 to 4 mm. For this purpose, it is necessary to rotate the cap by about 300 °, and in the meantime, the cap and the container are rotated. The sealing property of the mouth will already be destroyed. Therefore, if the swirling of the cap is stopped before the weakened part is broken, it is judged that the appearance has not been opened yet, although the sealing part has peeled off and the sealing property of the container has already been released. It had a problem that it would end up.

In the latter cap, which has a structure for preventing the TE band from rotating, if the interval between the projections provided is made small, the weakened portion is broken before the sealability of the container is broken, and the TE band is prevented. Although it can be cut and divided, such a structure has a problem in ease of opening, and even when the cap is closed, a considerable force is exerted when the protrusion provided on the inner surface of the band gets over the protrusion provided at the mouth of the container. This is not preferable because it requires breakage of the weakened part and a strong force is required for closing the plug.

Therefore, an object of the present invention is to reliably break the weakened portion and to prevent the TE band from breaking before the destruction of the sealing property between the cap and the container opening portion at the time of opening without causing the above-mentioned problems. Another object of the present invention is to provide a container with a cap that can be surely exerted a TE function by being separated from the cap body. Another object of the present invention is to provide a container with a cap that can be easily closed while preventing breakage of the weakened portion.

[0007]

[Means for Solving the Problems]

 According to the present invention, a cap shell portion including a top plate portion and a skirt portion having a screw on the inner surface, and a cap shell portion having a sealing portion provided on the inner surface of the top plate portion so as to be in close contact with the tip of the container mouth portion, and the cap shell portion A cap made of a tamper-evidence band provided below the skirt and through a fragile weakening part, and a weakening part provided at the mouth between the cap shell part and the tamper-evidence band. In a combination of containers provided with beads, the inner surface of the tamper-evidence band has a ring with a protrusion on the upper side so that it is located under the beads provided at the mouth of the container when the cap is closed. A protrusion is provided, and a protrusion is provided on the lower side of the bead of the container mouth.When the cap is opened, the upper protrusion of the annular protrusion and the lower protrusion of the bead engage with each other. CONTAINER WITH cap is provided which is characterized in.

[0008]

[Work]

 In the container with a cap of the present invention, when the cap is swung about 60 ° when the cap is opened, the ridge provided on the upper side of the annular protrusion provided on the inner surface of the TE band and the bead of the container mouth are provided on the lower side. Since the ridges provided are engaged, the TE band does not rotate any more and cannot move upward. As the cap continues to turn, the cap shell turns independently and moves upward, breaking the weakened part. Therefore, in the container with a cap of the present invention, the weakened portion is ruptured before the cap is swung by 90 °, so that it is possible to sufficiently maintain the sealing property between the container opening and the inner surface of the cap, and in appearance. Even if the container is not opened, the problem that the hermeticity inside the container is not maintained does not occur, and the guarantee function of the contents can be reliably provided. In the cap of the present invention, the inner surface of the TE band is provided with the annular projection and the plurality of projections in combination, so that the cap engages with the bead portion of the container mouth in the vertical direction and the circumferential direction. It is possible to prevent the band from slipping out and to ensure that the weakened part is broken even with a slight turning.

In order to close such a cap at the mouth of the container by a screwing method, it is necessary for the ridge corresponding to the TE band portion to get over the screw, the bead or the like of the container. After the cap is closed, the TE band of the cap is locked by the bead at the mouth of the container. Therefore, in such a cap, it is necessary to prevent the breakage of the weakened portion by reducing the resistance applied to the weakened portion when the cap is closed. Therefore, if the annular projections and ridges of the cap and the beads and ridges of the container are made smaller so that the cap can be easily closed, it is possible to prevent the weakened part from breaking when the cap is closed. The engagement with the bead is weakened, which causes the tail to come off when the cap is opened.

In the present invention, since the locking is securely performed in the two directions of the vertical direction and the circumferential direction, the annular portion can be made into a small convex shape, which can ensure the ease of closure. Moreover, it is possible to prevent the band portion from slipping off when the cap is closed. When the cap is attached to the mouth of the container by tapping, the screw inside the cap is intermittent, and the intermittent part of the screw is provided so as to be at the protruding position of the knurl, which causes a large difference in the thickness of the cap shell. Since the cap does not exist, the cap does not spread evenly at the time of tapping, and only part of the cap does not extend.

[0011]

【Example】

 An embodiment of the present invention will be described with reference to the accompanying drawings. A longitudinal sectional view (A) of an example of the cap of the present invention, and a transverse sectional view taken along line XX of (A) (B) (the right half also shows the state before opening, that is, it corresponds to (A)) In FIG. 1, the left half is a diagram showing a state before opening, and the right half is a diagram showing a state after the weakened portion is broken after the opening is started. In the cap generally designated by 1, a TE band 6 is provided below the skirt 3 of the cap shell 4 and the cap shell 4 including the top plate 2 and the skirt 3 via the weakened portion 5. An inner ring 7 is provided on the inner surface of the top plate 2 of the cap shell to maintain the hermeticity of the container. The TE band 6 is provided with an annular protrusion 10 located below the bead portion 9 of the container mouth 8 in a closed state, and a plurality of ridges 11 are provided on the upper portion of the annular protrusion 10. (Hereinafter, referred to as a cap side protrusion).

Next, in FIG. 2 showing a vertical cross-sectional view (A) of an example of the container mouth and a horizontal cross-sectional view (B) taken along the line YY of (A), the bead portion 9 of the container is also below. Similarly, a plurality of ridges 12 (hereinafter referred to as container-side ridges) are provided. As can be seen from FIG. 1B, the cap-side ridges 11 are provided at approximately 30 ° intervals, and the container-side ridges 12 are provided at 90 ° intervals. When the cap is opened, when the cap is rotated by 30 °, the cap-side ridges 11 and the container-side ridges 12 are engaged with each other and rotation in the circumferential direction is restricted. The vertical movement of the bead part is restricted and the weakened part is broken.

In FIG. 3 showing a longitudinal sectional view (A) of an example of a cap used in another aspect of the present invention and a transverse sectional view (B) taken along line ZZ of FIG. The outline is almost the same as the cap shown in FIG. The cap shown in FIG. 3 is different from the cap shown in FIG. 1 in that the screw on the inner surface of the cap is intermittent and the outer surface of the cap shell skirt portion 3 is provided with knurls. As can be seen from the cross-sectional view (B), in this embodiment, it is possible to align the thread crest 13a with the groove 14a of the knurl and the intermittent portion 13b of the screw with the knurl protrusion 14b. is important. As a result, the thickness of the cap shell skirt portion 3 becomes almost the same, although it is concave and convex, so that it easily expands and contracts at the time of tapping and does not break the weakened portion. In FIG. 3 as well, as in the embodiment shown in FIGS. 1 and 2, the TE band is securely locked in the vertical direction and the circumferential direction, so the cap is weakened only by turning about 60 °. The part was broken, revealing that it was opened before the sealed part of the container was broken.

The cap shell material used in the present invention is not limited to this, but it is preferable to use, for example, polypropylene, polyethylene or the like. The liner provided on the inner surface of the cap top plate may be provided with an inner ring as shown in the figure integrally with the cap shell, or the liner may be formed on the cap top plate with a material different from the shell material. As the liner material, a conventionally known liner material such as polyethylene can be used.

[0015]

[Effect of the device]

 According to the present invention, prior to the breaking of the cap and the sealing portion of the container mouth at the time of opening, the weakened portion is surely broken and the TE band is divided from the cap body, so that the TE function is surely exerted. A container can be provided. Moreover, it is possible to provide a container with a cap that can be easily stoppered while preventing the cap from stretching.

[Brief description of drawings]

FIG. 1 is a view showing an example of a cap of a container with a cap according to the present invention.

FIG. 2 is a view showing an example of a container mouth portion of the capped container of the present invention.

FIG. 3 is a view showing an example of a cap according to another aspect of the present invention.

[Explanation of sign]

 1 Cap 2 Top Plate Part 3 Skirt Part 4 Cap Shell 5 Weakened Part 6 TE Band 8 Container Port 9 Bead 10 Annular Protrusion 11 Cap Side Projection 12 Container Side Projection 13 Intermittent Screw 14 Nar

Claims (2)

[Scope of utility model registration request] 1. A cap shell portion comprising a top plate portion and a skirt portion having a screw on an inner surface thereof, and a cap shell portion having a sealing portion provided on the inner surface of the top plate portion so as to be in close contact with a tip of a container mouth portion, and a skirt portion below the cap shell portion. And a cap made of a tamper-evidence band provided through a fragile weakening part, and a bead for breaking the weakening part provided between the cap shell part and the tamper-evidence band at the mouth part. In the combination of the containers, the inner surface of the tamper-evidence band is provided with an annular protrusion having a protrusion on the upper side so as to be located below the bead provided at the container mouth portion when the cap is closed, A protrusion is provided on the lower side of the bead of the container mouth, and the upper protrusion of the annular protrusion engages with the lower protrusion of the bead when the cap is opened. A container with a cap. 2. A screw of the cap shell portion is an intermittent screw, and a knurl is provided outside the cap shell portion,
The container with a cap according to claim 1, wherein an intermittent portion of the screw of the cap shell is located at a protruding position of the knurl.