JP2005350113A - Bung with seal ring for preventing unauthorized opening - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bung with a seal ring for preventing unauthorized opening and for confirming unauthorized opening just by looking which does not leave the ring on a discharge opening implement, whose opening torque in opening a cap is small, whose sealing characteristic when resealed with the cap is satisfactory, and the number of whose manufacturing processes is small. <P>SOLUTION: The top panel inside face of a cap main body is provided in a hanging manner with an inner seal ring. The peripheral wall bottom end of the cap main body is connectively provided with a seal ring for preventing unauthorized opening through a plurality of fragile bridges provided circumferentially. A predetermined number of the fragile bridges are reinforced fragile bridges harder to be broken than the rest of the fragile bridges. A plurality of ratchet pieces are provided circumferentially on the inside face of the ring for preventing unauthorized opening. A vertical fragile connecting part easier to be broken than the reinforced bridges is provided from the top end to the bottom end of the ring for preventing unauthorized opening near the reinforced fragile bridge. A discharge opening implement is provided with a ratchet protrusion for fitting with the ratchet piece of the ring at the bottom of a male screw on the outer periphery of a discharge tube. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a spigot that protrudes at a pouring position of a liquid paper container, and relates to a spigot with a tamper-evident sealing ring in which a cap with a tamper-evident sealing ring is screwed to a spout that is opened by a pull ring.

Conventionally, in order to prevent unauthorized opening of containers that store liquid contents in the distribution process or in stores, it is possible to prevent unauthorized opening by screwing into the spout of the container as a cap that can be clearly confirmed as being opened. A cap with a sealing ring was used. This cap with tamper-evident sealing ring connects a tamper-evident sealing ring provided with a locking flap or a locking ratchet on the inner peripheral surface with a plurality of fragile bridges that can be broken at the lower end of the peripheral wall of the cap body. When the cap body is rotated in the screwing direction to open the container, the locking flap or the locking ratchet of the tamper-evident sealing ring and the locking ring provided below the male screw of the spout part of the container Alternatively, the brittle bridge is broken by the engaging action with the ratchet, the cap body and the tamper-evident sealing ring are separated, and the tamper-evident sealing ring remains in the spout portion of the container. This separation between the cap body and the tamper-evident sealing ring can be confirmed from the appearance even if the cap spout is re-sealed with the cap body. It was useful as a preventive measure. By the way, recently, when a used container is disposed of, it has been separated and collected for each material. When the container and the cap are made of different materials, it is necessary to remove the tamper-evident sealing ring remaining at the spout part of the container from the spout part. Many measures and inventions have been made as countermeasures. For example, in the TE band of the cap described in Patent Document 1 (the tamper-evident sealing ring in the present invention), the TE remaining in the spout portion of the container. In order to be able to remove the band, the TE band is formed with a break permitting means formed of a vertical slit with an upward opening and a thin bridge provided at the lower end of the slit, and the cap described in Patent Document 2 In the pilfer-proof band of the present invention (in the present invention, the tamper-resistant sealing ring) is formed with a breaking means comprising a vertical score (cut line) and a breakable residual portion at the lower end of the score, and this The pilfer-proof band is broken at the same time that the cap is opened. It was as it can.
JP 2003-54597 A JP 2002-326654 A

  However, the former cap of Patent Document 1 requires time and effort to remove the TE band remaining at the spout portion of the container. In particular, when the aperture is small, it is difficult to remove the TE band. Further, when the cap was resealed after leaving the TE band in the spout of the container after it was tampered with, it was difficult to know whether it was tampered with. Moreover, the cap of the latter patent document 2 is formed by post-processing with a cutter, and the score of the pilfer-proof band and the remaining portion that can be broken at the lower end increase the number of manufacturing steps. Since there are restrictions on the size of the remaining part, it may be difficult to break when opened.

The present invention solves the problems of the above-described conventional caps with tamper-evident sealing rings, and the caps are tampered with tappings that screw the caps with tamper-evident sealing rings onto spouts. It can be confirmed from the appearance that the tampering has been opened, the tamper-evident sealing ring does not remain on the spout, the cap opening torque at the time of opening is appropriately small, and the cap is opened after the container is opened. Therefore, the present invention provides a plug with a tamper-evident sealing ring that has good sealing properties when re-sealed and has a small number of manufacturing steps.

  That is, the first invention of the present invention is a spigot in which a cap composed of a cap body and an unauthorized opening preventing sealing ring is screwed to a spout tool that is opened by a pull ring, and the cap body is attached to the inner surface of the top plate. An inner sealing ring that seals the dispensing tube of the spout tool is suspended, and a tamper-evident sealing ring is connected to the lower end of the peripheral wall via a plurality of brittle bridges in the circumferential direction. A predetermined number of brittle bridges are provided at equal intervals in the circumferential direction as reinforced brittle bridges that are less likely to break than other brittle bridges, and a plurality of ratchet pieces are provided at equal intervals in the circumferential direction on the inner surface of the tamper-evident sealing ring, A tamper-resistant sealing ring is provided with a predetermined number of fragile connecting parts from the upper end to the lower end, which are easier to break than the reinforced brittle bridge, in the vicinity of the fragile brittle bridge. A ratchet protrusion that engages with the ratchet piece of the tamper-evident sealing ring when the cap is rotated in the screwing direction is provided below the male screw, and when the cap is not opened, it is under the tamper-evident sealing ring of the cap. The end face abuts the upper surface of the pedestal ring of the spout tool, and there is a gap between the inner surface of the top plate outside the inner sealing ring of the cap and the upper end face of the spout cylinder of the spout tool. When unscrewing from the implement, the longitudinal brittle connection between the brittle bridge and the tamper-evident sealing ring other than the reinforced brittle bridge connecting the cap body and the tamper-evident sealing ring is broken, and the cap is unscrewed from the spout The tamper-evident sealing ring that is vertically divided is connected to the lower end of the peripheral wall of the cap body with a reinforced brittle bridge. When the spout tool is resealed with the separated cap body, there is a gap between the lower end surface of the peripheral wall of the cap body and the upper surface of the base ring of the spout tool, and the outer peripheral surface of the inner sealing ring of the cap is An opening stopper with a tamper-evident sealing ring, characterized in that the inner surface of the top plate outside the inner sealing ring is in close contact with the inner surface of the mouth portion and in close contact with the upper end surface of the spout tube of the spout tool.

  Next, the second invention of the present invention is the mouth plug with a tamper-evident seal ring according to the first invention, wherein the predetermined number of reinforced weak bridges and weak connection parts is one. .

  Next, according to a third aspect of the present invention, there is provided a tamper-resistant seal according to the first aspect, wherein the predetermined number of reinforced weak bridges and weak connection portions are two and are provided at opposing positions. It is a spigot with a ring.

  Next, according to a fourth aspect of the present invention, the ratchet piece provided in the circumferential direction of the inner surface of the tamper-evident sealing ring has an inclined sliding surface on the screwing direction side of the cap and an engagement surface on the screwing direction side. And the ratchet protrusion of the dispensing tube of the spouting tool has an engagement surface on the screwing direction side of the cap and an inclined smooth surface on the screwing direction side. The plug with a tamper-evident sealing ring described in 1.

  Next, the fifth invention of the present invention is characterized in that the ratchet piece provided in the circumferential direction of the inner surface of the tamper-evident sealing ring is provided on the inner inner surface of the fragile bridge position near the vertical fragile connection portion. It is a mouth plug with a tamper-evident seal ring according to the first to fourth inventions.

  Next, a sixth invention of the present invention is the illegality according to the first to fifth inventions, characterized in that the distance between the lower part of the cap body and the upper part of the unauthorized opening prevention sealing ring is 0.1 mm or more. It is a spigot with an opening prevention sealing ring.

Next, according to a seventh aspect of the present invention, the width of the longitudinal weak connection portion of the tamper-evident sealing ring is 0.1 mm or more. It is a spigot with a prevention sealing ring.

  According to an eighth aspect of the present invention, there is provided the plug with a tamper-evident sealing ring according to any one of the first to seventh aspects, wherein a knurling is provided on an outer peripheral surface of the tamper-evident sealing ring.

  The cap with a tamper-evident sealing ring of the present invention is for screwing a cap with a tamper-evident sealing ring onto a spout tool, and when the cap is tampered with, the cap body and the tamper-evident sealing ring are Even when the weak bridging bridge other than the strengthening brittle bridge to be connected and the vertical weak connection part of the tamper-evident sealing ring are broken and screwed to the spout with the tamper-evident cap, the brittle bridge and the tamper-evident sealing ring From the vertically broken state, it can be clearly seen from the appearance that it has been tampered with. In addition, in the case where two vertically vulnerable connecting portions of the tamper-evident sealing ring are provided to face each other, the vertically broken state of the tamper-evident sealing ring can be confirmed from any direction of the cap. Also, if the fragile brittle bridge that connects the tamper-evident sealing ring is broken and screwed into the spout with only the cap body, the tamper-evident sealing ring is not present, so it is obvious It can be confirmed.

  In addition, when the cap is rotated in the screwing direction in order to open the container, the opening stopper with the tamper-evident sealing ring of the present invention rotates the engagement surface of the ratchet piece of the tamper-evident sealing ring and the spout part of the container. A brittle bridge other than the reinforced brittle bridge that connects the cap body and the tamper-evident sealing ring by the engagement action with the engagement surface of the ratchet protrusion provided below the male screw, and the vertical direction of the tamper-evident sealing ring When the fragile connection is broken and the cap is unscrewed from the spout, the tamper-evident sealing ring that is divided vertically is connected to the lower end of the peripheral wall of the cap body with a reinforced brittle bridge, and the tamper-resistant sealing ring is It does not remain in the spout tool. When the spout is resealed with the cap body, the reinforced brittle bridge is broken and the tamper resistant sealing ring is separated from the cap body.

  Further, the mouthpiece with the tamper-evident sealing ring according to the present invention has the lower end surface of the tamper-evident sealing ring of the cap in contact with the upper surface of the base ring of the spout device when the cap is not opened. There is a gap between the inner surface of the top plate outside the inner sealing ring and the upper end surface of the spout tube of the spout tool, and the cap is not closed more strongly than necessary. For this reason, the opening torque of the cap at the time of opening is appropriately small and easy to open.

  In addition, the mouthpiece with a tamper-evident sealing ring of the present invention is such that when the spout is re-sealed with the cap body, the outer peripheral surface of the inner sealing ring of the cap is in close contact with the inner surface of the mouth of the dispensing tube, and Since the inner surface of the top plate outside the sealing ring is in close contact with the upper end surface of the spout tube of the spout tool, the sealing performance is good.

  The tamper-resistant sealing ring cap of the present invention in which the tamper-evident sealing ring is provided with a tamper-resistant sealing ring according to the present invention is easy to hold the cap when the height of the cap body is short. It is easy to separate the tamper-evident sealing ring connected to the main body with a reinforced weak bridge from the cap main body.

  Moreover, the cap with tamper-evident seal ring of the present invention is manufactured by an injection molding method, and does not require a post-process such as cutting, so the number of manufacturing processes is not small.

  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 cross-sectional view of a mouth plug with a tamper-evident sealing ring according to Embodiments 1 and 2, and FIG. 2 is a front view thereof. 3 is a cross-sectional view taken along line A-A ′ of FIG. FIG. 4 is a cross-sectional view of the cap of the spigot with the tamper-evident sealing ring of Embodiments 1 and 2. 5 is a cross-sectional view taken along line B-B ′ of FIG. 4 in the first embodiment. 6 is a cross-sectional view taken along the line A-A ′ of FIG. 1 in the second embodiment, and FIG. 7 is a cross-sectional view taken along the line B-B ′ of FIG.

  As shown in FIG. 1, the spigot (10) with a tamper-evident seal ring of Embodiment 1 is configured by screwing a cap (100) with a tamper-evident seal ring into a spout (200) that is opened with a pull ring (234). It is what I wore. For example, the stopper is projected from the stopper attachment hole (21) of the top inclined plate of the prismatic liquid paper container (20), and the upper surface of the flange (240) of the spout tool is thermally fused to the inner surface of the container. It is attached and attached. The cap with tamper-evident sealing ring is made by injection molding using a thermoplastic resin such as polyethylene that can break the fragile part, and the spout is also a thermoplastic resin such as polyethylene that fits the application. Is produced by an injection molding method.

  As shown in FIGS. 1 and 4, the structure of the cap (100) with the tamper-evident sealing ring according to the first embodiment includes a cap body (110) and a tamper-evident sealing ring (120). ) Is a diagram in which an inner sealing ring (112) for sealing the pouring tube (220) of the spout tool (200) is suspended on the inner surface of the top plate (111), and provided at the lower end of the peripheral wall (113) in the circumferential direction. Tightened brittle bridges (121s) which connect tamper-evident sealing rings via 8 brittle bridges (121) shown in 5 and prevent one brittle bridge from 8 brittle bridges from breaking other brittle bridges. As shown in FIG. 3, four ratchet pieces (122) are provided at equal intervals in the circumferential direction on the inner surface of the tamper-evident sealing ring (120), and as shown in FIG. Vertical tamper connection from the upper end to the lower end consisting of a vertical slit (123a) having a weak connection (123b) at the lower end shown in FIG. A part (123) is provided. In addition, the ratchet piece (122) provided in the circumferential direction of the inner surface of the tamper-evident sealing ring is provided on the inner inner surface of the fragile bridge position near the vertical fragile connection portion (123) as shown in FIG. is there. In this case, when the cap is rotated in the screwing direction, the force extending in the circumferential direction of the tamper-evident sealing ring is strongly applied to the vertical weak connection portion, and the vertical weak connection portion is easily broken. Further, as shown in FIG. 3, the shape of the ratchet piece (122) is such that when the cap is screwed onto the spout tool, the ratchet piece (122) is placed on the screwing direction side so as to get over the ratchet protrusion (222) of the spout tool (200). An inclined sliding surface (122b) is provided on the surface, and an engagement surface (122a) is provided on the screwing direction side so as to engage with the ratchet protrusion of the spout tool when the cap is screwed out of the spout tool. . Moreover, the space | interval of the lower part of a cap main body and the upper part of an unauthorized opening prevention sealing ring is provided in 0.1 mm or more. This is to stabilize the closing angle of the cap by providing a cushioning property when the cap is screwed into the dispensing tube of the spout tool. Further, when the width of the longitudinal weak connection portion of the tamper-evident sealing ring is 0.1 mm or more, molding by the injection molding method is facilitated. In order to facilitate handling during use, as shown in FIG. 2, knurls (115, 124) are provided on the outer peripheral surface of the peripheral wall of the cap body (110) and the outer peripheral surface of the tamper-evident sealing ring (120). is there.

Next, as shown in FIG. 1, the structure of the spout tool (200) of Embodiment 1 is provided with a flange (240) for heat-sealing the inner surface and the upper surface of the container at the lower end of the outer periphery, and equidistant between the outer periphery of the upper end. On the pedestal ring (210) having the temporary fixing protrusions (211) at the four locations, a male screw (221) on the outer periphery and a ratchet piece (122) of the tamper-evident sealing ring (120) below the male screw A pouring cylinder (220) provided with four ratchet protrusions (222) at equal intervals in the circumferential direction to be joined is erected, and a sealing plate (230) is provided and sealed inside the pouring cylinder, and the sealing plate An annular cut (231) is provided on the lower surface to form an annular thin line of weakness (232) on the upper surface of the planned opening position, and a pull ring (234) is provided at a position near the inner side of the annular thin line of weakness. Support post (233
). As shown in FIG. 3, the ratchet protrusion (222) is shaped so that the ratchet piece (122) of the tamper-evident sealing ring (120) gets over when the cap is screwed onto the spout tool (200). In addition, an inclined sliding surface (222b) is provided on the screwing direction side, and when the cap is screwed off from the spout tool, the engaging surface on the screwing direction side is engaged with the ratchet piece of the tamper-evident sealing ring. (222a) is provided.

  In the product design, as shown in FIG. 1, when the cap with tamper-evident sealing ring (100) is screwed into the spout tube (220) of the spout tool (200) and attached, The lower end surface of the anti-opening sealing ring contacts the upper surface of the base ring (210) of the spout tool, and the outer peripheral surface of the inner sealing ring (112) of the cap body (110) fills the inner peripheral surface of the outlet tube Lightly close enough that water does not enter in the process, so that a gap is formed between the inner surface of the top plate (111) outside the inner sealing ring of the cap body and the upper end surface of the spout tube (220) of the spout tool. When a cap with a tamper-evident seal ring is unscrewed from the spout tube of the spout tool, a fragile bridge other than the reinforced brittle bridge that connects the cap body with the tamper-evident seal ring and a tamper-evident seal seal Set the width and thickness of the brittle bridge and the width and form of the brittle connection so that the vertical brittle connection breaks, and when the cap is screwed out of the spout tool, at the lower end of the peripheral wall of the cap body, When the tamper-evident sealing ring divided vertically is connected by a reinforced brittle bridge, the reinforced brittle bridge can be broken by pulling, and the spout is resealed with the cap body separated from the tamper-proof sealing ring The outer peripheral surface of the inner sealing ring of the cap is in close contact with the inner surface of the mouth of the dispensing tube, and the inner surface of the top plate outside the inner sealing ring is in close contact with the upper end surface of the dispensing tube of the spout tool. The cap body is designed so that a gap is formed between the lower end surface of the peripheral wall of the cap body and the upper surface of the base ring of the spout tool. As described above, since the outer peripheral surface of the inner sealing ring of the cap is lightly intimate so that water does not enter the inner peripheral surface of the mouth portion of the dispensing cylinder in the filling process, In the case of a mischief such as opening and pulling the pull ring in the spout tube of the spout tool to open the sealing plate, and screwing the cap onto the spout tool as it is, it was illegally opened by a sideways liquid leak test It is also possible to inspect the product easily and in large quantities.

  Next, as shown in FIG. 7, the tamper-resistant stopper plug (10) of Embodiment 2 is provided with two reinforced weakened bridges (121 s) at positions facing each other, and FIG. 6 and FIG. As shown in FIG. 7, two weak connection portions (123) are provided at positions facing each other, and the others are manufactured in the same manner as the mouth plug with the tamper-evident sealing ring of the first embodiment described above. It is.

FIG. 3 is a cross-sectional view of a tapping plug with a tamper-evident sealing ring according to Embodiments 1 and 2. It is a front view of the spigot with a tamper-evident seal ring of FIG. FIG. 2 is a cross-sectional view taken along line A-A ′ of FIG. 1 of the first embodiment. It is sectional drawing of the cap of the cap with a tamper-evident seal ring of Embodiment 1 and 2. FIG. 5 is a cross-sectional view taken along line B-B ′ in FIG. 4 of the first embodiment. FIG. 6 is a cross-sectional view taken along line A-A ′ of FIG. FIG. 5 is a cross-sectional view taken along line B-B ′ in FIG. 4 of the second embodiment.

Explanation of symbols

10: Plug 20 ... Container 21 ... Plug attachment hole 100 ... Cap 110 ... Cap body 111 ... Top plate 112 ... Inner sealing ring 113 ... Peripheral wall 114 ... Female screw 115, 124 ... ... Knurl 120 ... Sealing ring 121 ... Fragile bridge 121s ... Reinforced weak bridge 122 ... Ratchet pieces 122a, 222a ... Engagement surfaces 122b, 222b ... Inclined smooth surface 123 ... Vertical weak connection portion 123a ... Longitudinal slit 123b …… fragile connection 200 …… spout tool 210 …… base ring 211 …… temporary stop projection 220 …… extraction tube 221 …… male screw 222 …… ratchet projection 230 …… blocking plate 231 …… annular cut 232 ... Annular thin line 233 ... Strut 234 ... Pull ring 240 ... Flange

Claims (8)

  It is a spigot in which a cap consisting of a cap body and a tamper-evident sealing ring is screwed onto a spout tool that is opened by a pull ring, and the cap body seals a spout cylinder of the spout tool on the inner surface of the top plate. An inner sealing ring is vertically suspended, and a tamper-evident sealing ring is connected to the lower end of the peripheral wall via a plurality of fragile bridges in the circumferential direction. Reinforced fragile bridges that are harder to break than bridges are provided at equal intervals in the circumferential direction, and multiple ratchet pieces are provided on the inner surface of the tamper-evident sealing ring at equal intervals in the circumferential direction to strengthen the tamper-evident sealing ring. In the position, a predetermined number of weak connection parts from the upper end to the lower end, which are easier to break than the reinforced weak bridge, are provided, and the spout tool is screwed under the male screw on the outer periphery of the pipe. Provided with a ratchet projection that engages with the ratchet piece of the tamper-evident sealing ring when rotated in the direction, and when the cap is not opened, the lower end surface of the tamper-evident sealing ring of the cap is the top surface of the base ring of the spout A gap between the inner surface of the top plate outside the inner sealing ring of the cap and the upper end surface of the spout tube of the spout tool. When the weak brittle bridge other than the fragile brittle bridge that connects the tamper-evident sealing ring and the longitudinal fragile connection between the tamper-evident sealing ring breaks and the cap is unscrewed from the spout, The tamper-resistant sealing ring divided vertically is connected with a reinforced brittle bridge, and the spout is attached to the cap body by breaking the reinforced brittle bridge and separating the tamper-proof sealing ring. When sealed, there is a gap between the lower end surface of the peripheral wall of the cap body and the upper surface of the base ring of the spout tool, the outer peripheral surface of the inner seal ring of the cap is in close contact with the inner surface of the mouth of the dispensing tube, and the inner seal. A spigot with a tamper-evident sealing ring, wherein the inner surface of the top plate outside the stop ring is in close contact with the upper end surface of the spout tube of the spout tool.   The mouth plug with a tamper-evident seal ring according to claim 1, wherein the predetermined number of reinforced weak bridges and weak connection parts is one.   The plug with a tamper-evident seal ring according to claim 1, wherein the predetermined number of the reinforced weak bridges and the weak connection portions are two and are provided at opposing positions.   The ratchet piece provided in the circumferential direction of the inner surface of the tamper-evident sealing ring has an inclined sliding surface on the screwing direction side of the cap and an engagement surface on the screwing direction side, and the ratchet of the dispensing tube of the spout tool 4. The spigot with a tamper-evident seal ring according to claim 1, wherein the projection has an engagement surface on the screwing direction side of the cap and an inclined smooth surface on the screwing direction side.   5. The tamper-evident prevention according to claim 1, wherein the ratchet piece provided in the circumferential direction of the inner surface of the tamper-evident sealing ring is provided on the inner inner surface of the fragile bridge position near the longitudinal fragile connection portion. Mouth plug with sealing ring.   6. The plug with a tamper-evident sealing ring according to claim 1 or 5, wherein the gap between the lower part of the cap body and the upper part of the tamper-evident sealing ring is 0.1 mm or more.   7. The plug with a tamper-evident sealing ring according to claim 1, wherein the width of the longitudinal fragile connecting portion of the tamper-evident sealing ring is 0.1 mm or more.   8. A mouth plug with an unauthorized opening preventing sealing ring according to claim 1, wherein a knurling is provided on an outer peripheral surface of the unauthorized opening preventing sealing ring.

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