JP2004018024A - Built-in stopper with tamper-evident opening blade - Google Patents

Abstract

A thin fragile bridge connecting a peripheral wall and a tamper-evident ring is easily cut off when the cap is unscrewed, and the tamper-proof ring separated from the cap does not remain floating. Provide a plug with a built-in opening blade.
A spout with a built-in opening cylinder and a tamper-evident ring are formed of a cap connected to a lower end of a peripheral wall with a thin brittle bridge. The opening prevention ring separates from the cap, the opening cylinder having an opening blade at the lower end built into the spout descends, breaks the sealing film and opens the container, and the inner circumference of the lower end of the cap unauthorized opening prevention ring. A plurality of occlusal protruding portions 231 are provided at equal intervals in the circumferential direction on the surface, and a locking protruding portion narrower than the occlusal protruding portion of the tamper-evident ring is provided below the occlusal ring 112 provided below the spout discharge tube. A plurality of portions 113 are provided in the circumferential direction so as to be inserted between the occlusal projections.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a stopper with a built-in anti-tampering opening blade protruding from the top of a liquid paper container used for sake, fruit drinks, seasonings, softeners, liquid detergents and the like.
[0002]
[Prior art]
Conventionally, a liquid paper container (20) has, for example, as shown in FIG. 4 (a), a quadrangular prism-shaped body (21), and a gable roof-shaped top inclined plate (22) has a spout. For ease of operation, the one provided with the opening plug (10) with a built-in opening blade has been used in a wide range of commercial fields. As shown in FIG. 4B, the opening plug with built-in opening blade (10) is provided with a plurality of triangular opening blades (310) at the lower end thereof and an opening tube provided with a cut-off portion (311). The body (300) is built inside the spout cylinder (110) of the spout (100) (spout device) so as to be able to descend, and when the cap (200) screwed to the spout is rotated in the unscrewing direction, the cap Spiral sliding guide inclined surface provided on the outer peripheral surface of the guide inner cylinder vertically suspended at the center position of the top plate, and spiral sliding contact guide provided on the inner peripheral surface of the opening tubular body The opening cylinder (300) is lowered by sliding contact with the inclined surface, and the sealing film (400) for sealing the liquid paper container with the opening blade (310) provided at the lower end of the opening cylinder. It has been known that it breaks and opens. As shown in FIG. 3, a plurality of occlusal projections (231) are circumferentially formed on the inner peripheral surface of the lower end via a thin brittle bridge (222) at the lower end of the peripheral wall (220) of the cap (200). The tamper-evident ring (230) provided is connected, and an occlusal ring (112) is provided below the spout (110) of the spout (100) to engage with the occlusal projection (231) of the cap. When the cap is rotated in the unscrewing direction to open the cap, the thin fragile bridge is cut off, the tamper-evident ring is separated from the cap, and it is found that the tamper-evident opening has been completed. ) Was known. The reason why the opening blade (310) is provided in parallel with the opening blade (310) provided at the lower end of the opening cylinder (300) shown in FIG. This is so as not to fall into the contents (30). Then, into the opening blade built-in plug, a sealing film is heat-sealed on the lower surface of the spout to seal the lower opening of the dispensing cylinder, and the stopper is poured into the stopper mounting hole of the liquid paper container. 6A, the cylinder is projected and the upper surface of the flange is heat-sealed to the inner surface of the container, and the sealing film (400) of the liquid paper container (20) as shown in FIG. On the upper surface of the outer periphery of the sealed pouring hole (23), there is an external one which is attached by heat-sealing the lower surface of the flange (120) of the spout (100).
[0003]
[Problems to be solved by the invention]
By the way, in the above-mentioned conventional plug with a built-in opening blade with tamper-proof, when the cap is rotated in the unscrewing direction and the cap is raised, the upper surface of the occlusal projection of the tamper-proof ring of the cap is spouted. Abutting against the lower surface of the occlusal ring, the thin fragile bridge that connects the peripheral wall of the cap and the tamper-evident ring is cut off by the lifting force of the cap, but in order to easily screw the cap onto the spout, If the margin of engagement between the occlusal projection of the cap tamper-evident ring and the occlusal ring of the spout is reduced, even if the occlusal projection of the tamper-evident ring rides on the occlusal ring of the spout, the thin brittle bridge is cut After cutting, the tamper-evident ring was left floating, and the thin-walled fragile bridge was difficult to cut.
[0004]
The present invention solves the above-mentioned problem of the conventional tamper-evident opening cap with built-in opening blade.When the cap is rotated in the unscrewing direction, a thin fragile bridge connecting the peripheral wall and the tamper-evident ring is provided. An object of the present invention is to provide a plug with a built-in tamper-proof opening blade that is easy to be surely cut and does not leave a tamper-evident ring separated from a cap floating.
[0005]
[Means for Solving the Problems]
That is, the first invention of the present invention is characterized in that the spout protrudingly provided at the discharge position of the liquid paper container and having a built-in opening cylinder is connected to the lower end of the peripheral wall through a thin brittle bridge at the lower end of the peripheral wall. The cap is screwed onto the spout, and when the cap is rotated in the unscrewing direction, the thin-walled fragile bridge is broken and the tamper-evident ring is separated from the cap, and the spout ejection tube An opening tube that is built in and has an opening blade at the lower end, which lowers with the rotation of the cap in the unscrew direction, breaks the sealing film provided below, and opens the container. In the stopper, a plurality of occlusal projections are provided in the circumferential direction at equal intervals on the inner peripheral surface of the lower end portion of the tamper-evident prevention ring of the cap, and under the occlusal ring provided below the spout discharge cylinder, the cap is tampered with. Opening prevention ring A tamper evident with open blades built spout that is characterized by providing a plurality in insertably equidistant narrow of the locking projection between the occlusal projection in the circumferential direction than the inter-occlusal projection.
[0006]
Next, a second invention of the present invention is characterized in that the fitting margin between the occlusal projection of the cap and the occlusal ring of the spout is set to a diameter of 0.6 to 1.4 mm. The invention is a plug with a built-in unsealing blade with tamper-proofing.
[0007]
Next, the third invention of the present invention is characterized in that both ends of the occlusal projection of the cap are formed in a vertical surface having a horizontal cross section in a straight line, and the cap of the cap is screwed into the locking projection of the spout when the cap is screwed. The side in contact with the occlusal projection has a horizontal section formed in a vertical arc-shaped surface, and the side in contact with the occlusal projection of the cap when the cap is unscrewed has a horizontal section formed in a linear vertical plane. A plug with a built-in unsealing blade according to the first or second aspect of the invention.
[0008]
The fourth invention of the present invention is characterized in that the vertical length of the locking projection of the spout is set to ± 0.3 mm of the gap between the upper surface of the occlusal projection of the cap and the lower surface of the occlusal ring of the spout. The opening plug with a built-in unsealing blade according to any one of the first to third inventions, wherein
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of a plug with a built-in unsealing blade according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view of a plug with a built-in unsealing blade with tamper-proof according to one embodiment of the present invention. FIG. FIG. 4 is a cross-sectional view taken along the line AA ′ showing the shape of a locking projection provided in FIG.
[0010]
As shown in FIG. 1, the tamper-resistant opening plug with built-in opening blade (10) of the embodiment of the present invention movably incorporates an opening cylinder (300) having an opening blade (310) at the lower end. It comprises a spout (100) and a cap (200) screwed to the spout, and the cap is provided on a lower end inner peripheral surface through a plurality of thin brittle bridges (223) at the lower end of the peripheral wall (220). A tamper-evident ring (230) having a slash is connected, and two opposing sliding contact guide inclined surfaces (241) for lowering the opening cylinder at the center of the lower surface of the top plate (210) are equally spaced in the circumferential direction. A guide inner cylinder (240) provided on the outer peripheral surface is vertically provided, and a contact sealing ring (211), an inner sealing ring (212), and the like are provided on the lower surface of the top plate (210) as necessary. Of the peripheral wall (220) is provided. On the surface, it is to form threaded portion (221). The opening cylindrical body (300) is provided with two sliding guide inclined surfaces (301) on the inner peripheral surface at equal intervals in the circumferential direction so as to correspond to the sliding contact inclined surfaces (241) of the cap. Usually, four sliding protrusions (320) are provided at the upper end of the surface at equal intervals in the circumferential direction, and the spout (100) is provided on the inner circumferential surface of the pouring tube (110) on the sliding protrusion of the opening cylinder. Corresponding normal eight sliding vertical ribs (130) are provided at equal intervals in the circumferential direction, and below the screwing portion (111) on the outer peripheral surface, an occlusal protruding portion (231) of a tamper-proof ring of the cap is provided. An occlusal ring (112) for occlusal is provided. Then, as shown in FIGS. 1 and 2, usually eight occlusal projections (231) are provided in the circumferential direction at equal intervals on the inner peripheral surface of the lower end of the tamper-evident ring (230) of the cap (200). A locking projection (113), which is narrower than between the occlusal projections of the tamper-evident ring of the cap, is provided below the occlusal ring (112) provided below the discharge tube (110) of the (100). Usually, two or four are provided at equal intervals in the circumferential direction so that they can be inserted therebetween.
[0011]
The fitting margin between the above-described occlusal projection of the cap and the occlusal ring of the spout has a diameter of 0.6 to 1.4 mm. If it is smaller than 0.6 mm, the thin fragile bridge is not broken, and the occlusal projection of the cap may get over the occlusal ring of the spout. If it is larger than 1.4 mm, the cap is screwed onto the spout. In some cases, the biting projection of the cap may not be able to get over the biting ring of the spout.
[0012]
As shown in FIG. 2, the shape of the occlusal projection (231) provided on the inner peripheral surface of the lower end of the tamper-evident ring (230) of the cap (200) is such that both ends are formed in a vertical plane with a horizontal cross section being straight. Is what you do. Also, the shape of the locking projection (113) provided below the engagement ring (112) on the outer peripheral surface of the spout cylinder (110) of the spout (100) is such that when the cap is screwed (left side of the arrow), the engagement of the cap The side that contacts the part is formed with a vertical section whose horizontal cross section is an arc, and the side that contacts the occlusal projection of the cap is formed as a vertical plane with a horizontal section when the cap is unscrewed (right side of the arrow). It is.
[0013]
Also, as shown in FIG. 1, the vertical length of the locking projection (113) of the spout (100) is equal to the upper surface of the occlusal projection (231) of the cap (200) and the occlusal ring (112) of the spout. Is set to ± 0.3 mm of the gap with the lower surface. If the cap is increased by 0.3 mm or more, the resistance when screwing the cap onto the spout increases, and if the cap is smaller than 0.3 mm, the capping protrusion is illegally opened when the cap is unscrewed from the spout. The locking effect on the prevention ring is reduced, and it is difficult to reliably break the thin brittle bridge.
[0014]
When the cap is rotated in the unscrewing direction, the cap rises while the cap is unsealed, and the cap is raised. One side of the occlusal projection provided on the inner peripheral surface at the lower end abuts against one side of the locking boss provided under the occlusal ring of the spout that is fixed to the container, and the tamper-evident ring is locked. Become. Therefore, when the cap is further rotated in the unscrewing direction, the thin brittle bridge connecting the peripheral wall of the cap and the tamper-evident ring is cut off by the turning force and the rising force of the cap. At this time, the surface of the occlusal projection of the tamper-evident ring of the cap that comes into contact with the spout locking projection is a vertical surface with a straight horizontal cross section, and the cap of the spout locking projection is tamper-evident. The surface of the prevention ring that comes into contact with the occlusal projection is a vertical surface with a straight horizontal section, so that the tamper-evident prevention ring is securely locked, and therefore, the thin brittle bridge of the cap is also reliably cut. . In addition, the occlusal projection of the tamper-evident ring does not ride on the occlusal ring of the spout and does not float.
[0015]
When the cap is attached to the spout spout cylinder by rotating it in the screwing direction, one side of the occlusal projection provided on the inner peripheral surface at the lower end of the tamper-evident prevention ring of the cap is positioned below the spout occlusal ring. Even if it comes into contact with the locking projection provided on the cap, the surface of the spout locking projection that comes into contact with the occlusal projection of the cap is a vertical surface with an arc-shaped horizontal cross section. Even if the surface in contact with the locking projection of the spout is a vertical surface with a horizontal cross section being straight, the occlusal projection of the cap can easily get over the locking projection of the spout.
[0016]
【The invention's effect】
The plug with a built-in tamper-evident opening blade according to the present invention includes a spout with a locking projection that is narrower than the occlusal projection of the tamper-evident ring of the cap under the occlusal ring provided below the spout pouring cylinder. The fragile bridge that connects the peripheral wall and the tamper-evident ring is easily cut off when the cap is rotated in the unscrewed direction. The tamper-evident ring does not remain floating.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a plug with a built-in unsealing blade with tamper-proofing according to an embodiment of the present invention.
FIG. 2 shows the shape of an occlusal projection provided on a tamper-evident ring of a cap of a cap with a built-in unsealing blade with tamper-proofing and an engaging projection provided under an occlusal ring of a spout discharge cylinder according to one embodiment of the present invention. It is AA 'sectional drawing shown.
FIG. 3 is a cross-sectional view of a conventional example of a plug with a built-in unsealing blade with tamper-proofing.
FIG. 4A is an explanatory view showing a state before opening a liquid paper container to which an example of a plug with a built-in opening blade is attached, and FIG. 4B is a view showing a state when opened. It is A 'sectional drawing.
[Explanation of symbols]
10 Opening blade built-in plug 20 Liquid paper container 21 Body 22 Top inclined plate 23 Spout hole 30 Contents 100 Spout 110 Spout cylinder 111, 221 ... Screw portion 112 ... Occlusion ring 113 ... Locking protrusion 120 ... Flange 130 ... Sliding vertical rib 140 ... Sliding groove 200 ... Cap 210 ... Top plate 211 ... Contact sealing ring 212 ... inner sealing ring 220 ... peripheral wall 222 ... thin-walled fragile bridge 230 ... unauthorized opening prevention ring 231 ... biting projection 240 ... guide inner cylinders 241 and 301 ... sliding contact guide inclined surface 300 ... opening Cylinder 310: Opening blade 311: Missing blade portion 320: Sliding protrusion 400: Sealing film 401: Fragment

Claims (4)

A spout protruding from the liquid paper container ejection position and having a built-in opening cylinder, and a cap to which an unauthorized opening prevention ring is connected to the lower end of the peripheral wall through a thin brittle bridge and screwed to the spout, When the cap is rotated in the unscrewing direction, the thin fragile bridge is broken and the tamper-evident ring is separated from the cap, and is opened inside the spout ejection tube and has an opening blade at the lower end. The cap body is lowered with the rotation of the cap in the unscrewing direction, and breaks the sealing film provided below to open the container. A plurality of occlusal projections are provided at equal intervals on the inner peripheral surface of the lower end portion, and the width is smaller than that between the occlusal projections of the tamper-evident prevention ring of the cap below the occlusal ring provided below the spout discharge tube. Narrow locking projection The occlusal projection insertably tamper-proof with open blades built spout that is characterized by providing a plurality at equal intervals in the circumferential direction between. 2. The plug with a built-in opening blade as claimed in claim 1, wherein a fitting margin between an engaging portion of the cap and an engaging ring of the spout is 0.6 to 1.4 mm in diameter. . Both ends of the occlusal projection of the cap are formed in a vertical plane having a horizontal cross section in a straight line, and the horizontal section is circular on the side that comes into contact with the occlusal projection of the cap when the cap is screwed into the locking projection of the spout. 3. The tamper-evident opening according to claim 1, wherein the cap is formed on an arc-shaped vertical surface, and a side of the cap that comes into contact with the occlusal projection when the cap is unscrewed is formed as a vertical surface having a horizontal cross section. Built-in stopper with opening blade with prevention. The vertical length of the locking projection of the spout is set to ± 0.3 mm of a gap between the upper surface of the biting projection of the cap and the lower surface of the biting ring of the spout. 3. A plug with a built-in unsealing blade as described in 3 above.

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