JP4366927B2 - Tamper-proof mouth cap - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a tamper-resistant stopper plug that protrudes from a pouring position of a liquid paper container used for sake, fruit juice beverages, seasonings and the like.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as shown in FIG. 6, for example, as shown in FIG. 6, a liquid paper container used for liquid contents such as food has a quadrangular prism shape and a spout on a gable roof-shaped top inclined plate (22). The liquid paper container (20) provided with a stopper (10) composed of (100) and a cap (200) has been used over a wide range of applications. This cap is a cap that is screwed onto a spout pipe that is heat-sealed to the container's pouring position, but normally it ensures perfect sealing and virginity during distribution. Or, in order to have easy opening at the time of use, a sealing plate is provided on the lower inner side of the spout tube to seal it, and it opens at the time of use. A line was formed, and a column having a pull ring at the tip was erected on a predetermined position side of the upper surface in the vicinity of the inner side of the annular thin weak line. When opening this plug cap with pull ring, remove the cap, hang the fingertip on the pull ring housed inside the spout tube of the spout and pull it upwards, and tear the annular thin line of weakness of the sealing plate. Was. In addition, after using the spout which opened, the cap was screwed into the extraction | pouring cylinder, and it mounted and resealed.
[0003]
[Problems to be solved by the invention]
By the way, the above-mentioned conventional liquid paper container cap has no function of preventing unauthorized opening, and it is difficult to judge from the appearance of the product even if it is accidentally or intentionally opened in the distribution process. The quality of the product may be impaired, and the contents of the product may be adversely affected.
[0004]
In order to prevent tampering of merchandise at stores in the market, there is a plastic cap with tampering prevention, although it is not a spigot. This typical structure consists of a ratchet and cap formed at the bottom of the container's mouth and neck at the bottom of the container's mouth and neck at the hem of the cap formed on the inner surface with an internal thread formed on the outer surface of the container's mouth and neck. The tamper-evident ring which formed the ratchet which fits at the time of screwing in the inner peripheral surface was partially connected by the easily breakable connection part (for example, refer patent document 1).
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 54-64649
However, if the tamper-evident structure described above is applied to the plug as it is, the material of the plug is generally soft. Therefore, when the cap is rotated in the screwing rotation direction when the container is opened, the tamper-evident ring of the cap bulges outward, and the ratchet formed on the inner peripheral surface of the tamper-evident ring is In some cases, the ratchet formed on the lower part of the neck portion is overcome, and the easily breakable connecting portion is not broken, and the tamper-evident ring is not separated from the cap but rotates together.
[0007]
The present invention solves the above-described conventional problems, and the tamper-evident ring that reliably separates the tamper-evident ring from the cap when the cap is rotated in the screwing rotation direction to open the container. A plug is provided.
[0008]
[Means for Solving the Problems]
The invention of the present invention comprises a spout attached to the pouring position of the liquid paper container and a cap that is screwed to the spout, and an outer peripheral surface of a lower end portion of the spout tube of the spout on the outer side in the screwing rotation direction of the cap. A plurality of ratchets having an inclined smooth surface inclined to the screw rotation direction side in the circumferential direction is formed in the circumferential direction, and a plurality of ratchets provided at equal intervals in the circumferential direction on the lower end surface of the peripheral wall of the cap. When the cap is rotated in the screwing direction via the easily breakable connecting portion, the cap fits with the ratchet of the spout and has an inclined smooth surface that is inclined inward in the screwing rotation direction, and is fitted vertically on the screwing rotation direction side. A spigot with a tamper-evident opening that is connected to a tamper-evident ring that forms a plurality of ratchets having a right-angled triangular cross-section with a mating surface at equal intervals in the circumferential direction of the inner circumferential surface. Set on the outer peripheral surface of the lower end of the tube Among the plurality of ratchets, two ratchets facing the vertical fitting surface facing the parting line, and two ratchet caps positioned next to the two ratchet caps in the screwing rotation direction All of the plate-like fitting portions are respectively extended in the screwing rotation direction of the cap at the outer peripheral end of the vertical fitting surface on the screwing rotation direction side, and are provided on the inner peripheral surface of the tamper-evident ring of the cap. A plate-like shape that fits with the plate-like fitting portion of the ratchet of the spout when the cap is rotated in the screwing-off rotation direction at the inner peripheral end of the vertical fitting surface on the screwing-off rotation side of the ratchet cap A tapping plug with tamper-evident prevention, wherein the fitting portion is extended in the screwing rotation direction of the cap.
[0009]
[Action]
When the cap is screwed into the spout tube of the spout and screwed, the tamper-resistant stopper plug of the present invention is connected to the lower end surface of the peripheral wall of the cap via a plurality of easily breakable connecting portions. The cap is attached to the spout because the ring rides over the inclined smooth surface of the ratchet provided on the inner peripheral surface while sliding on the inclined smooth surface of the ratchet provided on the outer peripheral surface of the lower end of the spout tube. The When the cap attached to the spout tube is rotated in the screwing rotation direction and unscrewed, as shown in FIG. 5, a ratchet (on the outer peripheral surface of the lower end portion of the spout tube (120)) 122) provided on the inner end of the vertical fitting surface (233) of the ratchet (231) provided on the inner surface of the tamper-evident ring (230) of the cap. The plate-like fitting portion provided on the outer peripheral surface of the lower end portion of the spout tube (120) of the spout (100) shown in FIG. As shown in FIG. 5, the plate-like fitting portion (125) of the four ratchets (122) having (125) on the outer peripheral side tip portion of the vertical fitting surface (124) is formed on the ratchet (231) of the cap. Tightly fitting with the plate-like fitting part (234), preventing unauthorized opening Since the ring ratchet does not get over the spout ratchet and the cap tamper-evident ring is firmly fixed to the spout, the easily breakable connecting part connecting the cap peripheral wall and the tamper-proof ring is reliably broken, The tamper-evident ring separates from the peripheral wall of the cap. It can be easily recognized from the appearance that the easily breakable connecting portion is broken, and it can be confirmed that the cap is opened.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the tamper-resistant stopper plug of the present invention will be described in detail with reference to the drawings.
Fig.1 (a) is a bottom view of the cap of one Embodiment of the opening stopper with tampering prevention of this invention, FIG.1 (b) is AA 'line sectional drawing shown in FIG. 2 of a spout. . FIG. 2 is a front view of a spout according to an embodiment, and FIG. 3 is a partial cross-sectional view showing an inner structure of the spout. FIG. 4 is a cross-sectional view of a cap according to an embodiment, and FIG. 5 is an explanatory view showing a fitting state between a ratchet of a spout and a ratchet of a tamper-evident ring according to an embodiment. FIG. 6 is a perspective view of a liquid paper container in which a mouth plug of an example protrudes from the top.
[0011]
The tamper-resistant stopper plug of the present invention comprises a spout attached to the liquid paper container pouring position and a cap screwed onto the spout. The spout is installed by a welding method such as an ultrasonic sealing method by projecting a pouring tube at the pouring position of the liquid paper container. Since spouts and caps are broken, they are usually produced by injection molding using a relatively soft thermoplastic resin such as low density polyethylene or linear low density polyethylene.
[0012]
As shown in FIG. 2, the spout (100) of the tamper-resistant stopper plug according to this embodiment has a male screw with a cap on an annular pedestal (110) having a weld ring (130) with a container on the outer peripheral surface of the lower end. As shown in FIG. 3, a pouring cylinder (120) having (121) on the outer peripheral surface is erected, and a sealing plate (140) is provided and sealed under the pouring cylinder (120), An annular notch (141) having an inverted V-shaped cross section is provided on the lower surface of the sealing plate at the planned opening position, and an annular thin line of weakness (142) is formed on the upper surface thereof. on one side of the, which upright posts (143) having a pull ring (144) at the distal end, as shown in FIG. 1 (b), the lower end outer peripheral surface of the pouring cylinder (120), the cap It has an inclined smooth surface (123) that inclines outward in the screwing rotation direction and hangs down on the screwing rotation direction side. Forming a plurality of ratchet with mating surface (124) and (122) in the circumferential direction, of the plurality of ratchet, perpendicular to the parting line (PL) (split surface of the mold) the mating surface (124 ) And two ratchets facing each other and the two ratchet caps positioned next to the screw rotation direction of the two ratchet caps on the outer peripheral end of the vertical fitting surface on the screw rotation direction side A plate-like fitting part (125) is provided in each part so as to extend in the screwing rotation direction of the cap.
[0013]
Further, as shown in FIG. 4, the cap (200) is composed of a top plate (210) and a peripheral wall (220), and an inner sealing ring (211) (sealing the outer peripheral surface on the lower surface of the top plate). A spout pour cylinder is closely attached to the inner peripheral surface of the spout and a contact sealing ring (212) (tip is closely attached to the top surface of the spout pour cylinder). (221) is provided, and is fitted into the ratchet of the spout when the cap is rotated in the screwing direction via a plurality of easily breakable connecting portions (222) provided at equal intervals in the circumferential direction on the lower end surface of the peripheral wall. A plurality of right-angled triangles in horizontal cross section having an inclined smooth surface (232) inclined inward in the screwing / rotating direction of the cap shown in FIG. 1 (a) and having a vertical fitting surface (233) on the screwing / rotating direction side. equally spaced ratchet the (231) in the circumferential direction of the inner circumferential surface The tamper-evident ring (230) to be formed is connected, and the cap is attached to the inner peripheral side tip of the vertical fitting surface on the screwing rotation direction side of all ratchet caps provided on the inner peripheral surface of the tamper-evident ring. A plate-like fitting portion (234) that fits with the plate-like fitting portion of the spout ratchet when rotated in the screwing rotation direction extends in the screw screwing rotation direction. The easily breakable connecting portion is formed to be thin and thin and easily breakable.
[0014]
The tamper-resistant stopper plug of the present embodiment, in which the cap is screwed onto the spout tube of the spout, is easily attached to the lower end of the peripheral wall of the cap when the cap is rotated in the screwing rotation direction to remove the cap. The ratchet provided on the inner peripheral surface of the tamper-evident ring that is connected via the rupture coupling part is fitted with the ratchet provided on the outer peripheral surface of the lower end of the peripheral wall of the spout, and the tamper-proof ring is fixed to the spout. When the cap was further rotated in the screwing rotation direction, the easily breakable connecting portion at the lower end of the peripheral wall of the cap was broken, and the cap and the tamper-evident ring were reliably separated. The ruptured state of the easily breakable connecting portion could be easily confirmed from the appearance even if the cap was screwed again to the spout.
[0015]
【The invention's effect】
The spigot and cap ratchet of the present invention is provided with a plate-like fitting portion on the spout and cap ratchet, and the effect of the plate-like fitting portion is used to rotate the cap in the screwing rotation direction. The tamper-evident ring is securely separated from the cap.
[0016]
In addition, the fact that it has been unintentionally or intentionally opened in the distribution process can be easily confirmed from the appearance from the broken state of the easily breakable connecting portion connecting the lower end of the peripheral wall of the cap and the unauthorized opening prevention ring.
[0017]
In addition, the structure of the ratchet for the tamper-evident opening stopper according to the present invention is such that the ratchet is formed at the lower end of the mouth neck of the container and connected to the lower end of the peripheral wall of the cap via an easily breakable connecting portion. The present invention can also be applied to the structure of a ratchet formed on the inner peripheral surface.
[Brief description of the drawings]
FIG. 1 (a) is a bottom view of a cap according to an embodiment of a mouth stopper with tamper-evident prevention according to the present invention, and FIG. .
FIG. 2 is a front view of a spout according to an embodiment of the tamper-resistant mouth plug of the present invention.
FIG. 3 is a partial cross-sectional view of the spout shown in FIG.
FIG. 4 is a cross-sectional view of a cap according to an embodiment of the tamper-resistant mouth plug of the present invention.
FIG. 5 is an explanatory view showing a fitting state between a spout ratchet and a tamper-evident ring ratchet in the tamper-evident stopper plug according to the embodiment;
FIG. 6 is a perspective view of a liquid paper container in which a mouth plug of an example projects from the top.
[Explanation of symbols]
10 ... Mouth plug 20 ... Liquid paper container 21 ... Body 22 ... Top inclined plate 100 ... Spout 110 ... Annular base 120 ... Dispensing cylinder 121 ... Male screw 122, 231 ... Ratchet 123, 232... Inclined sliding surfaces 124 and 233. Vertical fitting surfaces 125 and 234... Plate-like fitting portion 130 .. welding ring 140 .. sealing plate 141. Support post 144 ... Pull ring 200 ... Cap 210 ... Top plate 211 ... Inner sealing ring 212 ... Contact sealing ring 220 ... Peripheral wall 221 ... Female screw 222 ...

Claims (1)

An inclined smooth surface which is composed of a spout attached to a liquid paper container pouring position and a cap screwed to the spout, and is inclined outwardly in the screwing rotation direction of the cap on the outer peripheral surface of the lower end portion of the spout tube of the spout. A plurality of ratchets having a vertical fitting surface on the screwing rotation direction side are formed in the circumferential direction, and a plurality of easily breakable connecting portions provided at equal intervals in the circumferential direction are formed on the lower end surface of the peripheral wall of the cap. A horizontal section having an inclined smooth surface inclined inward in the screwing / rotating direction of the cap that fits with the spout ratchet when the cap is rotated in the screwing direction and having a vertical fitting surface on the screwing / rotating direction side A tamper-resistant opening stopper connected to a tamper-evident ring that forms a plurality of ratchets having a right triangle shape at equal intervals in the circumferential direction of the inner peripheral surface, the outer peripheral surface of the lower end portion of the spout pipe of the spout Multiple lattices provided in Screwing of two ratchet caps positioned next to the two ratchets facing the parting line facing the vertical fitting surface and the screwing rotation direction of the two ratchet caps A plate-like fitting portion is extended in the screwing rotation direction of the cap at the outer peripheral end portion of the vertical fitting surface on the rotation direction side, and all ratchets provided on the inner peripheral surface of the tamper-evident ring of the cap A plate-like fitting portion that fits with the plate-like fitting portion of the ratchet of the spout when the cap is rotated in the screwing-rotating direction at the inner peripheral end of the vertical fitting surface on the screwing-rotation direction side of the cap A cap with a tamper-evident feature, characterized in that the cap is extended in the screwing and rotating direction.

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