JP4333130B2 - 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]
Conventionally, in a liquid paper container used for liquid contents such as food, for example, as shown in FIG. 5, the trunk portion (21) has a quadrangular prism shape, and the gable roof-shaped top inclined plate (22) For example, a liquid paper container (20) comprising a spout (100) and a cap (200) with a pull ring stopper (10) as shown in FIG. It was. This plug is designed for convenience during use.
[0003]
[Problems to be solved by the invention]
However, the above-mentioned conventional liquid paper container caps do not have an unauthorized opening prevention function, and even if they are opened accidentally or intentionally in the distribution process, it is difficult to judge from the appearance of the product. The quality of the product may be impaired, and the contents of the product may be adversely affected.
[0004]
In addition, the method of attaching the spigot to the pouring position of the liquid paper container is as follows. First, the spout pour tube and the annular pedestal are projected into the spigot attachment hole of the liquid paper container, and the peripheral edge of the spout attachment hole is attached to the spout. At the outer peripheral upper end portion of the annular pedestal portion, it is temporarily fixed by hooking to temporary fixing protrusions provided at equal intervals in the circumferential direction, and then, as shown in FIG. What is attached by welding the upper surface of the welding ring (230) provided at the outer peripheral lower end portion of the annular pedestal portion (210) and the inner surface of the inner peripheral edge portion of the cap attachment hole (23) of the liquid paper container (20). It is. However, in the case of the mouthpiece (10) with a pull ring as shown in FIG. 6, when using it, the cap (100) is removed and accommodated inside the spout tube (220) of the spout (200). The pull ring (244) is pulled up by pulling a finger to break the annular thin line of weakness (242) and open the sealing plate (240). For this reason, a soft material is used for the spout, The temporary fixing function of the protrusion (211) may be insufficient.
[0005]
The present invention solves the above-described conventional problems, and it can be easily determined from the appearance of the product that the product has been opened in the distribution process or at the storefront, and is sufficient in the attachment process to the liquid paper container. It is intended to provide a tamper-resistant plug with a stopper function.
[0006]
[Means for Solving the Problems]
That is, the first invention of the present invention comprises a spout projecting from a cap attachment hole of a liquid paper container and a cap screwed to the spout, and a plurality of spouts on the outer peripheral surface of the lower end portion of the spout tube of the spout. The anti-rotation ratchet in the screwing direction is formed at equal intervals in the circumferential direction, and the cap is screwed in the screwing direction via a plurality of easily breakable connecting portions provided at equal intervals in the circumferential direction below the peripheral wall of the cap. Tamper-evident prevention by connecting tamper-evident prevention ring portions that form a plurality of screw-direction anti-rotation ratchets that fit with the spout-direction rotation prevention ratchet of the spout when rotated at equal intervals in the circumferential direction of the inner peripheral surface A cap with an inner diameter larger than the diameter of the cap attachment hole of the liquid paper container at the lower end of the tamper-evident ring portion of the cap, and having a size that can penetrate the cap attachment hole. Thin-walled temporary retaining ring with outer diameter Is a tamper-proof with a spout, characterized in that the vertically.
[0007]
Next, the second invention of the present invention comprises a spout projecting from the cap attachment hole of the liquid paper container and a cap screwed to the spout, and an outer peripheral surface below the male screw of the spout tube of the spout. The spout pipe is fixed when the cap is rotated in the screwing direction through a plurality of easily breakable connecting portions provided at equal intervals in the circumferential direction below the peripheral wall of the cap. A tamper-evident-preventing spigot connected to a tamper-evident ring that forms a plurality of screw-off rotation prevention flaps fitted to the ring and the lower outer circumferential surface at equal intervals in the circumferential direction of the inner circumferential surface of the lower end, A thin temporary wall having an inner diameter larger than the diameter of the cap attachment hole of the liquid paper container and having an outer diameter large enough to penetrate the cap attachment hole at the lower end of the tamper-evident ring portion of the cap. Injustice characterized by hanging a stop ring A seal prevention with a spout.
[0008]
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 is a cross-sectional view of the cap with tamper-evident prevention of Embodiment 1 of the present invention attached to the cap attachment hole of the liquid paper container, and FIG. 2 is a cross-sectional view of the cap. FIG. 3 is a cross-sectional view of the cap with tamper-evident prevention according to Embodiment 2 of the present invention attached to the cap attachment hole of the liquid paper container, and FIG. 4 is a cross-sectional view of the cap. FIG. 5 is a perspective view of a liquid paper container in which a mouth plug of an example protrudes from the top. FIG. 6 is a cross-sectional view of a conventional stopper plug attached to the stopper mounting hole of the liquid paper container.
[0009]
The tamper-resistant stopper plug of the present invention comprises a spout attached to the pouring position of the liquid paper container and a cap screwed onto the spout. The spout has a pouring tube and an annular pedestal protruding from the cap mounting hole at the pouring position of the liquid paper container, and the upper surface of the welding ring is welded to the inner surface of the liquid paper container by a welding method such as ultrasonic sealing. To attach. 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.
[0010]
As shown in FIG. 2, the cap (200) of the tamper-resistant stopper plug of Embodiment 1 comprises a top plate (110) and a peripheral wall (120), and is a contact seal that seals a spout on the lower surface of the top plate. Stop ring (111) (tip is in close contact with top surface of spout tube) and inner sealing ring (112) (outer surface is in close contact with inner surface of spout tube) An internal thread (121) with a spout was provided on the inner peripheral surface of the cap, and the cap was rotated in the screwing direction via a plurality of easily breakable connecting portions (122) provided at equal intervals in the circumferential direction on the lower end surface of the peripheral wall. A tamper-resistant ring portion (130) that forms a plurality of screw-direction anti-rotation ratchets (131), which are sometimes engaged with a spout screw-direction anti-rotation ratchet, at equal intervals in the circumferential direction is connected to the inner peripheral surface. Is. A thin temporary fixing ring (140) having an inner diameter larger than the diameter of the stopper mounting hole of the liquid paper container at the lower end of the tamper-evident preventing ring portion and having an outer diameter large enough to penetrate the stopper mounting hole. ). The easily breakable connecting portion is formed to be thin and easy to break.
[0011]
As shown in FIG. 1, the spout (200) has an annular pedestal (210) having a weld ring (230) with a container on the outer peripheral surface of the lower end, and an external screw (221) with a cap on the outer peripheral surface. An outlet tube (220) is erected, and a sealing plate (240) is provided and sealed inside and below the pouring tube, and an annular notch having a reverse V-shaped cross section ( 241) is formed, an annular thin line of weakness (242) is formed on the upper surface thereof, and a column (243) having a pull ring (244) at the tip is provided on one side of the upper surface near the inside of the annular thin line of weakness. A plurality of screwing direction anti-rotation ratchets (222) are formed at equal intervals in the circumferential direction on the outer peripheral surface of the lower end portion of the dispensing cylinder. In addition, when opening a spout, the pull ring accommodated inside the extraction | pouring pipe | tube is hooked on a finger | toe and it pulls upwards, the cyclic | annular thin thin line is broken, and a sealing board is opened.
[0012]
Next, as shown in FIG. 4, the cap (200) of the tamper-resistant stopper plug according to the second embodiment comprises a top plate (110) and a peripheral wall (120), and a spout is sealed on the lower surface of the top plate. The contact sealing ring (111) and the inner sealing ring (112) are suspended, the female screw (121) with the spout is provided on the inner peripheral surface of the peripheral wall, and the lower end surface of the peripheral wall is provided at equal intervals in the circumferential direction. A fixing ring (223) and a lower outer peripheral surface of the spout tube (220) of the spout (200) shown in FIG. 3 when the cap is rotated in the screwing direction through the plurality of easily breakable connecting portions (122). An unauthorized opening prevention ring portion (130) for forming a plurality of screwing direction rotation prevention flaps (132) to be fitted on the inner peripheral surface of the lower end portion at equal intervals in the circumferential direction is connected. A thin temporary fixing ring (140) having an inner diameter larger than the diameter of the stopper mounting hole of the liquid paper container at the lower end of the tamper-evident preventing ring portion and having an outer diameter large enough to penetrate the stopper mounting hole. ).
[0013]
As shown in FIG. 3, the spout (200) is provided with an annular pedestal (210) having a weld ring (230) with a container on the outer peripheral surface of the lower end and a male screw (221) with a cap on the outer peripheral surface. A pouring cylinder (220) provided with a fixing ring (223) under the male screw is erected, and a sealing plate (240) is provided and sealed under the pouring cylinder, and the planned opening position of the sealing plate An annular notch (241) having an inverted V-shaped cross section is provided on the lower surface of the substrate, and an annular thin line of weakness (242) is formed on the upper surface side. A column (243) having a pull ring (244) is erected, and a plurality of screwing direction rotation prevention ratchets (222) are formed at equal intervals in the circumferential direction on the outer peripheral surface of the lower end portion of the dispensing cylinder. It is. In addition, when opening a spout, the pull ring accommodated inside the extraction | pouring pipe | tube is hooked on a finger | toe and it pulls upwards, the cyclic | annular thin thin line is broken, and a sealing board is opened.
[0014]
In the above-described embodiment 1 or 2, the tamper-resistant stopper plug is connected to the lower end of the peripheral wall of the cap via the easily breakable connecting portion when the cap is rotated in the screwing rotation direction in order to remove the cap. A screwing direction anti-rotation ratchet or screwing direction anti-rotation flap provided on the inner peripheral surface of the unsealing prevention ring portion is provided on the outer peripheral surface of the lower end portion of the spout tube of the spout. And a tamper-resistant connecting part that connects the lower end of the peripheral wall of the cap and the upper end of the tamper-evident ring when the tamper-resistant ring is fitted to the spout and the cap is further rotated in the screwing rotation direction. Is broken, and the tamper-evident ring is lowered. For this reason, the state where the easily breakable connecting portion is broken can be easily confirmed from the appearance even if the cap is screwed to the spout again.
[0015]
In addition, the tamper-resistant stopper plug of Embodiments 1 and 2 has an inner diameter larger than the diameter of the stopper mounting hole of the liquid paper container at the lower end of the tamper-proof ring portion of the cap, and penetrates the stopper mounting hole. A thin and flexible temporary retaining ring having an outer diameter of a possible size is suspended, and this temporary retaining ring passes through the stopper mounting hole of the liquid paper container and then the diameter of the stopper mounting hole. Therefore, the temporary fixing function in the attachment process to the liquid paper container is good.
[0016]
【The invention's effect】
According to the present invention, the tamper-resistant stopper has been opened inadvertently or deliberately in the distribution process because the easily breakable connecting portion connecting the lower end of the peripheral wall of the cap and the tamper-evident ring portion or the tamper-evident opening. From the falling state of the prevention ring, it can be easily confirmed from the appearance.
[0017]
Further, the tamper-resistant stopper plug of the present invention has a temporary fixing ring suspended from the lower end of the tamper-evident ring portion of the cap, and this temporary fixing ring acts as a temporary attachment in the process of attaching to the liquid paper container. Good stop function. Note that the structure of the temporary fixing ring can be applied to various liquid paper containers.
[0018]
Further, the temporary fixing ring of the mouthplug with tamper-evident prevention according to the present invention does not have a projection shape unlike the conventional temporary stopper projection of the plug, so there is no risk of damaging human fingers.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a cap with tamper-evident prevention according to Embodiment 1 of the present invention attached to a cap mounting hole of a liquid paper container.
FIG. 2 is a cross-sectional view of a cap according to the first embodiment.
FIG. 3 is a cross-sectional view of a tamper-resistant stopper plug according to Embodiment 2 of the present invention attached to a stopper attachment hole of a liquid paper container.
4 is a sectional view of a cap according to Embodiment 2. FIG.
FIG. 5 is a perspective view of a liquid paper container in which a mouth plug of an example projects from the top.
FIG. 6 is a cross-sectional view of a conventional stopper plug attached to a stopper mounting hole of a liquid paper container.
[Explanation of symbols]
10 ... Plug 20 ... Liquid paper container 21 ... Body 22 ... Top inclined plate 23 ... Cap plug mounting hole 100 ... Cap 110 ... Top plate 111 ... Inner sealing ring 112 ... Contact seal Retaining ring 120 ... peripheral wall 121 ... female thread 122 ... easy-breaking connecting part 130 ... tamper-evident preventing ring part 131, 222 ... screwing direction rotation preventing ratchet 132 ... screwing direction rotation preventing flap 140 ... temporary fixing Ring 200 ... Spout 210 ... Annular pedestal 211 ... Temporary fixing protrusion 220 ... Pouring tube 221 ... Male screw 223 ... Fixing ring 230 ... Welding ring 240 ... Sealing plate 241 ... Annular cut 242 ... Annular thin-walled fragile wire 243 ... strut 244 ... pull ring

Claims (2)

A spout projecting from the cap mounting hole of the liquid paper container and a cap screwed to the spout, and a plurality of screwing direction rotation preventing ratchets on the outer peripheral surface of the lower end of the spout tube of the spout The spout is rotated in the screwing direction when the cap is rotated in the screwing direction via a plurality of easily breakable connecting portions provided at equal intervals in the circumferential direction below the peripheral wall of the cap. A tamper-proof mouthpiece with a tamper-evident ring that connects a plurality of screwing-direction rotation-preventing ratchets to be fitted with a prevention ratchet at equal intervals in the circumferential direction of the inner circumferential surface. A thin temporary fixing ring having an inner diameter larger than the diameter of the stopper mounting hole of the liquid paper container and having an outer diameter large enough to penetrate the stopper mounting hole is suspended from the lower end of the opening prevention ring portion. Unauthorized opening characterized by Prevention with a spout. A spout projecting from the cap mounting hole of the liquid paper container and a cap screwed to the spout; a fixing ring is provided on the outer peripheral surface of the spout tube of the spout tube and the lower part of the peripheral wall of the cap In addition, a plurality of fittings that engage with the fixing ring and the lower outer peripheral surface of the spout tube of the spout when the cap is rotated in the screwing direction through a plurality of easily breakable connecting portions provided at equal intervals in the circumferential direction. A tamper-evident-preventing ring cap connected to a tamper-evident ring that forms an unscrewing direction rotation prevention flap at equal intervals in the circumferential direction of the inner peripheral surface of the lower end portion, An irregularity characterized in that a thin temporary fixing ring having an inner diameter larger than the diameter of the stopper mounting hole of the liquid paper container and having an outer diameter large enough to penetrate the stopper mounting hole is suspended. Mouth stopper with opening prevention.

Images