JP4779306B2 - Tamper-proof mouth cap with sealing ring - Google Patents

Description

  The present invention is a spigot that protrudes from a pouring position of a liquid paper container for storing liquid contents of food or non-food, and is illegal to be temporarily attached when attached to a cap attachment hole of a liquid paper container. The present invention relates to a stopper plug with an anti-opening sealing ring.

  In order to prevent unauthorized opening of a liquid paper container that stores liquid contents in the distribution process or at the storefront, it has been possible to clearly confirm when the product has been tampered with when the product is purchased. As a result, a mouth cap with a tamper-evident sealing ring was used. This spigot with a tamper-evident seal ring is such that a cap with a tamper-evident seal ring is screwed to a spout tool protruding from the pouring position of the liquid paper container. The cap with tamper-evident sealing ring is a brittle bridge provided with a plurality of thin and narrow widths that can be broken at the lower end of the peripheral wall of the cap body, and a tamper-evident seal with a locking flap or a locking ratchet on the inner peripheral surface When the cap body is rotated in the unscrewing direction to open the liquid paper container, the locking flap or the locking ratchet piece of the tamper-evident sealing ring and the outlet tube of the spout tool are connected. The brittle bridge is broken by the engaging action of the locking ring or the locking ratchet protrusion provided below the male screw, and the cap body and the tamper-evident sealing ring are separated. This separation between the cap body and the tamper-evident sealing ring can be easily confirmed from the appearance even if the cap is re-sealed with the cap body. It was useful as a preventive measure.

  By the way, as shown in FIG. 4, the above-described conventional tamper-resistant stopper plug (10) has a flange (230) for heat-sealing the inner surface and the upper surface of the liquid paper container (20) to the lower end of the outer peripheral surface. On the annular pedestal portion (210) provided with four temporary engagement protrusions (211) at four circumferentially equidistant intervals on the outer peripheral surface of the upper end, a male screw on the outer peripheral surface and a locking ring or The cap (100) with the tamper-evident sealing ring described above was screwed onto the spout tool (200) provided with the pouring tube (220) provided with the locking ratchet projection. In the conventional plug with tamper-evident sealing ring, when the cap is attached to the liquid paper container, first, as shown in FIG. 4, the cap is attached to the plug attachment hole (21) of the liquid paper container (20). The cap (10) with which the cap (100) with a tamper-evident sealing ring is screwed to the spout tool (200) is projected to the annular pedestal portion (210) of the spout tool, and the annular pedestal of the spout tool After temporarily engaging with the stopper attachment hole of the liquid paper container by the temporary attachment protrusion (211) of the part, the inner surface of the liquid paper container and the upper surface of the flange (230) of the stopper are thermally fused by an ultrasonic sealing method or the like. It was to be worn and attached. However, the temporary engagement protrusion of the annular pedestal portion of the spout device is small because there is a restriction on the length in the vertical direction, and the engagement property of the stopper to the stopper attachment hole of the liquid paper container is too good. There was nothing. In particular, when the plug is inserted obliquely, the fastening property becomes insufficient.

  The present invention solves the problems of attaching the above-mentioned conventional tamper-resistant sealing ring-attached stopper to the liquid paper container, and the stopper is temporarily attached to the stopper attachment hole of the liquid paper container. A mouth plug with a tamper-evident sealing ring that is good and easy to attach is provided.

That is, the first invention of the present invention is a cap with a tamper-evident seal ring comprising a spout tool and a cap with a tamper-evident seal ring that is screwed to the spout tool. However, the tamper-evident sealing ring is connected to the lower end of the peripheral wall of the cap body via a plurality of weak bridges provided at equal intervals in the circumferential direction, and reaches the outer peripheral surface of the tamper-evident sealing ring from the upper end to the lower end. A plurality of temporary engaging ribs are provided at equal intervals in the circumferential direction, and a locking flap or a locking ratchet piece is provided on the inner peripheral surface, and a vertical weak connection portion is provided on this tamper-evident sealing ring. It is a mouth plug with a tamper-evident sealing ring that is characterized.

  Next, a second invention of the present invention is the mouth plug with a tamper-evident sealing ring according to the first invention, wherein the upper end portion of the temporary engaging rib is a curved surface that is lowered downward.

  According to a third aspect of the present invention, there is provided a plug with a tamper-evident seal ring according to the first aspect, wherein the upper end portion of the temporary engagement rib is formed as an inclined surface that is lowered downward.

  As shown in FIG. 1, the mouthpiece (10) with a tamper-evident sealing ring of the present invention has a plurality of temporary engagement ribs (121) extending from the upper end to the lower end on the outer peripheral surface of the tamper-evident sealing ring (120). ) Are provided at equal intervals in the circumferential direction, and when the stopper is temporarily attached to the stopper attachment hole (21) of the liquid paper container (20), the spout tool (200) shown in FIG. Compared with the temporary engagement protrusion (211) of the annular pedestal portion (210), the length in the vertical direction can be made larger in terms of space, so that the temporary engagement with the stopper mounting hole (21) of the liquid paper container (20) Since the wearability is good and the diagonal length (123) in the vertical direction of the tamper-evident sealing ring (120) shown in FIG. 2 (a) is relatively long, the stopper is a stopper of the liquid paper container. Even if it is not completely inserted into the mounting hole, it is difficult for the plug to come out of the plug mounting hole of the liquid paper container.

  In addition, the spigot with a tamper-evident sealing ring of the present invention in which the upper end portion of the temporary engagement rib is a curved surface or an inclined surface that is inclined downward is used when the plug is temporarily attached to the plug attachment hole of the liquid paper container. Since the upper end portion of the temporary engagement rib is a curved surface or an inclined surface that is lowered downward, it is easy to insert the plug into the plug mounting hole of the liquid paper container and it is easy to mount.

  Next, an embodiment of the mouthpiece with a tamper-evident sealing ring of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a front view of a cap with a tamper-evident seal ring of the present embodiment, and FIG. 2 (a) is a front view of a cap with a tamper-evident seal ring of the cap of FIG. FIG. FIG. 3 is an explanatory view showing a state of an example of a tamper-evident sealing ring connected to the cap body by a reinforced weak bridge.

  As shown in FIG. 1, the tapping plug (10) with a tamper-evident sealing ring of this embodiment is internally attached to the cap mounting hole (21) of the liquid paper container (20) (shown by a two-dot chain line). It consists of a spout tool (200) projecting by fusion and a cap (100) with a tamper-evident seal ring that is screwed onto the spout tool. And since the cap with a tamper-evident sealing ring has a fragile portion that is ruptured when used, it is manufactured by an injection molding method using a breakable thermoplastic resin such as polyethylene. The spout tool is manufactured by an injection molding method using a thermoplastic resin such as polyethylene or polypropylene that can be heat-sealed with the inner surface of the liquid paper container.

As shown in FIG. 2A, the structure of the cap with tamper-evident sealing ring (100) of the present embodiment is provided at equal intervals in the circumferential direction at the lower end of the peripheral wall (111) of the cap body (110). The tamper-evident sealing ring (120) is connected to each of the thin and narrow brittle bridges (101), and four temporary fastening ribs (121) from the upper end to the lower end are connected to the outer peripheral surface of the tamper-evident sealing ring. ) Are provided at equal intervals in the circumferential direction, and ten locking flaps (122) shown in FIG. 2 (b) are provided on the inner peripheral surface. The upper end of the temporary engagement rib is a curved surface with a downward slope, and the inner sealing ring (the outer peripheral surface is the inner periphery of the mouth) is formed on the lower surface of the top plate of the cap body. Or a contact sealing ring (with the lower end in close contact with the top of the mouth) or the like, and a female screw with a spout tool is provided on the inner peripheral surface of the peripheral wall. Further, the locking flap provided on the inner peripheral surface of the tamper-evident sealing ring may be a locking ratchet piece, and the shape of the locking ratchet piece is that of the spout tool when the cap is screwed onto the spout tool. An inclined smooth surface is provided on the screwing direction side so as to get over the locking ratchet protrusion, and when the cap is screwed off from the spout tool, it is engaged on the screwing direction side so as to engage with the ratchet protrusion of the spout tool. A surface is provided.

  Further, the structure of the spout tool (200) of the present embodiment is, as shown in FIG. 1, an annular shape in which a flange (230) for heat-sealing the inner surface and the upper surface of the liquid paper container (20) is provided at the lower end of the outer periphery. On the pedestal part (210), a pouring cylinder (220) is provided which has a male screw on the outer periphery and a locking ring that engages with a locking flap of the tamper-evident sealing ring (120) below the male screw. Is. If necessary, in order to maintain the seal in the distribution process or in the storefront, a sealing plate is provided on the lower side of the dispensing cylinder and sealed, and an annular cut is provided on the lower surface at the planned opening position of the sealing plate on the upper surface. An annular thin fragile line is formed, and a column having a pull ring at the tip is erected at one position near the inside of the annular thin fragile line. The cap plug is unscrewed from the spout tool, and then the pull ring contained in the spout cylinder is pulled upward to break the annular thin line of weakness of the sealing plate and open the spout tool. can do. In addition, when the latching ratchet piece is provided on the inner peripheral surface of the tamper-evident sealing ring, the latching ratchet protrusion is provided below the male screw on the outer peripheral surface of the dispensing cylinder. The shape of this latching ratchet protrusion is such that when the cap is screwed onto the spout tool, an inclined sliding surface is provided on the screwing direction side so that the ratchet piece of the tamper-evident sealing ring can get over, and the cap is spouted out. An engagement surface is provided on the screwing direction side so as to engage with the locking ratchet piece of the tamper-evident sealing ring when screwing out from the tool.

  And, by attaching the cap with the tamper-evident sealing ring of the present embodiment to the liquid paper container, the cap with the tamper-evident sealing ring is screwed onto the dispensing tube of the spout tool to prevent this tampering. As shown in FIG. 1, the stopper plug with sealing ring (10) is projected to the stopper mounting hole (21) of the liquid paper container (20) to the annular pedestal (210) of the spout tool (200). The inner surface of the liquid paper container is temporarily attached to the stopper mounting hole of the liquid paper container by a temporary attachment rib (121) provided on the outer peripheral surface of the tamper-evident sealing ring (120) from the upper end to the lower end. And the flange upper surface of the plug are heat-sealed by an ultrasonic sealing method or the like.

  When the cap body is rotated in the screwing direction to open the container, the weak bridging bridge other than the strengthening brittle bridge that connects the cap body and the tamper-evident sealing ring, and the vertical fragile connection portion of the tamper-evident sealing ring. When the cap is broken and the cap is unscrewed from the pouring tool, as shown in FIG. 3, the tamper-resistant sealing ring (120) divided vertically is formed at the lower end of the peripheral wall (111) of the cap body (110). (101S), there is a spigot with a tamper-evident sealing ring. In this case, when the tamper-evident sealing ring is grasped with a finger and separated from the cap body, In addition, since the temporary engagement rib (121) is attached to the outer peripheral surface, it becomes easier to grip with a finger.

It is a front view of a mouth stopper with a tamper-evident seal ring of one embodiment. (A) is a front view of the cap with an unauthorized opening prevention sealing ring of the cap of FIG. 1, (b) is the bottom view. It is explanatory drawing which shows the state of the tamper-evident sealing ring connected with the cap main body by the reinforced weak bridge. It is a front view of the mouthpiece with a tamper-evident seal ring of a conventional example.

Explanation of symbols

10. Cap 20 ... Liquid paper container 21 ... Cap attachment hole 100 ... Cap 101 ... Fragile bridge 101s ... Reinforced brittle bridge 110 ... Cap body 111 ... Perimeter wall 120 ... Sealing ring 121 ... Engaging rib 122 ... Stopping flap 123 ... Diagonal length 200 ... Spout tool 210 ... Annular pedestal 220 ... Dispensing tube 230 ... Flange

Claims (3)

In a cap with a tamper-evident sealing ring that consists of a spout device and a cap with a tamper-evident sealing ring that is screwed to the spout device, the cap with a tamper-evident sealing ring is circumferentially attached to the lower end of the peripheral wall of the cap body. A tamper-evident sealing ring is connected via a plurality of fragile bridges provided at equal intervals, and a plurality of temporary engagement ribs extending from the upper end to the lower end are circumferentially provided on the outer circumferential surface of the tamper-evident sealing ring. An opening stopper with a tamper-evident sealing ring, which is provided at equal intervals, provided with a locking flap or a locking ratchet piece on the inner peripheral surface , and provided with a vertical weak connection portion on this tamper-evident sealing ring. .   2. The spigot with a tamper-evident sealing ring according to claim 1, wherein the upper end portion of the temporary engagement rib is formed as a curved surface with a front-end downward.   2. The spigot with a tamper-evident sealing ring according to claim 1, wherein an upper end portion of the temporary engagement rib is formed to be an inclined surface with a front lowering.

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