JP2008018971A - Tap for liquid paper container and liquid paper container attached with the tap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tap having a discharging tube that makes liquid hardly drip after the discharge of liquid contents and prevents the unnecessary discharge of the contents, and to provide a liquid paper container attached with the tap. <P>SOLUTION: The tip of the discharging tube (14) of a spout (10) is expanded toward its end from the tip of a screw (13) at an inclined angle θ almost equal to an inclined angle θ of an inclined plate (4) of the liquid paper container. A difference D between the radius of the tip of the discharging tube and the radius of its central part is 0.5 to 9 mm, and a distance L between the tip of the discharging tube and the tip of the screw is 2 to 10 mm. The inclined angle θ is 25° to 35°. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a liquid paper container stopper comprising a spout projecting from the top of the container by heat sealing by an ultrasonic sealing method and a cap screwed to the spout, and a liquid paper container having the stopper attached thereto. In particular, the present invention relates to a stopper of a liquid paper container that is liable to run out of liquid when being dispensed, and a liquid paper container to which the stopper is attached.

  Conventionally, in a liquid paper container used for liquid contents of food and non-food, in consideration of ease of use at the time of use, for example, as shown in FIG. The liquid paper container (2) with a spout (10) and a cap (1) made of a spout (10) and a cap (20) at the pouring position of the inclined plate (4) at the top of the gable roof type is widely used. Has been.

  This cap (1) is a spout pipe that protrudes from the cap mounting hole of the container, and a cap is screwed into it. It has perfect sealing performance during distribution and storage and easy opening during use. For example, as shown in FIG. 3, a sealing plate (15) is provided and sealed on the lower inner surface of the spout tube (14) inside the spout (10), and the sealing plate is opened during use. An annular notch (16) having an inverted V-shaped cross section is formed at a predetermined position of the opening on the lower surface to form an annular thin weak line (17), and a pull ring ( 18), a support column (19) is erected, and when the cap is opened to open the container, the cap (20) is removed and accommodated inside the dispensing tube (14). Pull the pull ring (19) around your fingertips and pull the sealing plate (1 ) It had been unplugging tearing the thin annular line of weakness (17) of. (For example, refer to Patent Document 1).

  Then, the opened paper container was grasped by hand and lifted, and the paper container was tilted toward the transfer container such as a cup, and the sake or the like as the content liquid (30) was poured out (FIG. 2 (a ) And (b)).

The said prior art document is shown.
JP 2004-051126 A.

  However, at the time of pouring, the liquid is poured out to the outside of the tip portion (141) of the pouring cylinder, and when the pouring is finished, the liquid (30) outside the uppermost end is removed from the outer wall of the pouring cylinder (14). There is a problem of drooping. When the tip portion of the dispensing cylinder has a shape as shown in FIG. 2A, the dispensing width outside the dispensing cylinder is small, and it tends to hang down on the screw portion (13).

  When the leading end of the dispensing tube has a relatively large width outside the dispensing tube as shown in FIG. 2B and the distance to the screw portion (13) below it is relatively long, Although the amount that (30) hangs down on the screw portion (13) is reduced, the dripping is similarly caused when the content has a high viscosity. In addition, there is a problem in that when the outside is wet during pouring, dry matter accumulates even if there is little liquid dripping and develops into liquid dripping.

The present invention has been made in view of the above-described problems relating to the stopper of a liquid paper container comprising a spout that is thermally fused to the top of the container by an ultrasonic sealing method and a cap that is screwed to the spout. Therefore, it is an object of the present invention to provide a spigot having a pouring tube that generates little liquid dripping when the content liquid is poured out, and has good drainage, and a liquid paper container to which the spigot is attached.

  According to the first aspect of the present invention, a spout projecting from a spigot mounting hole provided in an inclined plate of a gable top type liquid paper container having a top portion formed in a roof shape is screwed to the spout. In a spigot comprising a cap to be attached, the spout has an outer peripheral surface with a threaded portion that engages with the cap on the inner peripheral edge of the upper surface of a pedestal ring with a sticking ring provided on the outer peripheral surface of the lower end. A cylinder is erected, a closing plate is provided on the lower inner surface of the dispensing cylinder and the inside is sealed, and an annular cut is provided at a predetermined position of the closing plate to form an annular thin line of weakness. It has a structure in which a column having a pull ring at the tip is erected on one side of the upper surface near the inside of the thin fragile wire, and the tip portion of the spout pipe is attached to the plug from the leading edge of the screw portion. The inclination angle θ of the inclined plate of the liquid paper container and It is formed to expand in a divergent shape at the same inclination angle θ, and the radius difference D between the radius of the tip portion of the pouring tube and the radius of the pouring tube and the central portion of the pouring tube is 0.5 to 5 mm. A stopper for a liquid paper container, wherein a distance L between a tip portion and a tip edge of a screw portion is 2 to 10 mm.

  As described above, according to the first aspect of the present invention, the spout projecting from the spigot mounting hole provided in the inclined plate of the gable top type liquid paper container having the top formed in the roof shape, and the spout is screwed. In the spigot comprising a cap to be fitted together, the spout is formed on the outer peripheral surface with a threaded portion that engages with the cap on the inner peripheral edge of the upper surface of the pedestal ring that is provided with a sticking ring on the outer peripheral surface of the lower end. A pouring cylinder is provided upright, and a closing plate is provided on the lower inner surface of the pouring cylinder to seal the inside, and an annular cut is provided at a predetermined position of the closing plate to form an annular thin fragile line. And a structure in which a column having a pull ring at the tip is erected on one side of the upper surface in the vicinity of the inner side of the annular thin fragile wire, and the tip portion of the spout tube of the spout is connected to the mouth from the leading edge of the screw portion. The inclined plate of the liquid paper container to which the stopper is attached It is formed so as to expand in a divergent shape at an inclination angle θ substantially the same as the oblique angle θ, and a radius difference D between the radius of the tip portion of the dispensing tube and the radius of the dispensing tube and the central portion of the dispensing tube is 0.5 to 5 mm Since the distance L between the tip portion of the dispensing cylinder and the tip edge of the screw portion is 2 to 10 mm, even when the angle of tilting the liquid paper container (pack) filled with the content liquid is small The liquid runs out. Moreover, it can pour without wetting the outer wall of the pour tube. Furthermore, even if the content liquid adheres to the outer wall of the dispensing cylinder, the content liquid that has been poured tends to fall into a container such as a cup to which the liquid is poured because the mouth of the packed pack is facing downward. .

  The invention of claim 2 is the stopper for the liquid paper container according to the invention of claim 1, wherein the inclination angle θ is 25 ° to 35 °.

  Thus, according to the invention described in claim 2, since the inclination angle θ is set to 25 ° to 35 °, the inclination angle of the inclined plate of the gable top type liquid paper container is 30 °. The angle is the same as the angle of the tip of the tube, and it is possible to pour out the liquid well just by tilting the pack a little.

  The invention of claim 3 is a liquid paper container to which the cap of claim 1 or 2 is attached by heat fusion.

  As described above, the stopper of the liquid paper container according to the present invention is easy to run out because the outer wall of the dispensing cylinder can be poured without getting wet by making the tip portion of the dispensing cylinder thin and angled. Furthermore, by making the cross-sectional shape project in a trumpet shape, the liquid was more easily drained and the liquid was not easily dripped.

The present invention will be described in detail below based on one embodiment.
For example, as shown in FIG. 4, the spigot of the liquid paper container of the present invention is attached to a spout (10) protruding from the spigot mounting hole of the liquid paper container (2) and screwed into the spout. It is a spigot (1) which consists of a cap (20). The spout (10) and the plug (20) are produced by an injection molding method using a thermoplastic resin having an appropriate rigidity such as polypropylene.

  The structure of the spout (10) is as follows. That is, for example, as shown in FIG. 1, a screw portion (13) screwed with a cap (20) on an inner peripheral edge portion of an upper surface of a base ring (12) having a sticking ring (11) provided on the outer peripheral surface of the lower end. ) Is disposed upright on the outer peripheral surface.

  A closing plate (15) is provided on the lower inner surface of the dispensing tube (14) to seal the inside, and an annular cut having an inverted V-shaped cross section or a V-shaped cross section is formed at a predetermined position of the closing plate (15). (16) is provided, and an annular thin line of weakness (17) is formed on the opposite surface side.

  A support column (19) having a generally circular or elliptical pull ring (18) is erected on one side of the upper surface in the vicinity of the inside of the annular thin weak line (17).

  The tip part (141) of the spout tube (14) of the spout (10) is inclined from the leading edge of the screw part (13) with the inclination angle of the inclined plate (4) of the liquid paper container to which the stopper (1) is attached. The cross section is formed in a trumpet shape so as to widen toward the end at substantially the same angle θ as θ. When the inclination angle θ is set to 25 to 35 °, the liquid runs out when the pack is inclined and poured out.

  Further, the radius difference D between the radius of the tip portion (141) of the dispensing tube (14) and the radius of the center portion of the dispensing tube (14) is 0.5 to 5 mm, and the tip portion of the dispensing tube (14). And the distance L between the tip portion (131) of the screw portion (13) is set to 2 to 10 mm.

  By setting in this way, the inclination angle θ of the inclined plate (4) of the normal gable top type liquid paper container is 30 °, and the opening angle of the tip portion of the dispensing cylinder (14) is set to the inclined plate (4). When the angle of inclination of the pack is the same as that of the liquid, the liquid runs out better even when the angle of tilting the pack when the content liquid is full is small.

  Further, by reducing the thickness of the tip portion (141) of the pouring tube (14) and providing an angle, the pouring tube (14) can be poured out without getting wet. Furthermore, by increasing the distance from the tip portion (141) of the pouring tube (14) to the tip edge (131) of the screw portion (13), the liquid adhering to the outside of the pouring tube (14) is completely poured. When the container is still tilted, it is easy to fall into a container, such as a cup, because the mouth is facing downward.

It is sectional explanatory drawing which shows one Example of the spout used for the stopper of this invention. (A), (b) is principal part perspective explanatory drawing which shows typically the state which has poured out the content liquid from the liquid paper container using the conventional stopper. It is sectional explanatory drawing which shows an example of the conventional spigot attached to the liquid paper container, especially a spout part. It is perspective explanatory drawing of the liquid paper container of an example which attached the stopper to the top inclination board by heat sealing | fusion.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Mouth stopper 2 ... Liquid paper container 3 ... Body part 4 ... Inclined plate 10 ... Spout 11 ... Sticking ring 12 ... Base ring 13 ... Screw part 14 ... Extraction cylinder 15 ... Closing plate 16 ... Annular cut 17 ... Annular thin brittle wire 18 ... Pull ring 19 ... Prop 20 ... Cap 30 ... Contents liquid 131 ... Screw tip end edge 141 ... Pipe tip part

Claims (3)

In a spigot comprising a spout protruding from a spigot mounting hole provided on an inclined plate of a gable top type liquid paper container whose top is formed in a roof shape and a cap screwed into the spout ,
The spout is provided with a pouring cylinder having a threaded portion on the outer peripheral surface of the upper peripheral surface of the pedestal ring having a sticking ring on the outer peripheral surface of the lower end. A closing plate is provided on the lower inner surface and the inside is sealed, and an annular cut is provided at a predetermined position of the closing plate to form an annular thin fragile line. One side of the upper surface near the inner side of the annular thin fragile line And a structure in which a pillar having a pull ring at the tip is erected,
The tip portion of the spout tube of the spout is formed to extend from the leading edge of the screw portion to the end at an inclination angle θ substantially the same as the inclination angle θ of the inclined plate of the liquid paper container to which the stopper is attached. The radius difference D between the radius of the tip portion and the radius of the center portion is 0.5 to 5 mm, and the distance L between the tip portion of the dispensing tube and the tip edge of the screw portion is 2 to 10 mm. A plug for liquid paper containers.   2. The cap of the liquid paper container according to claim 1, wherein the inclination angle [theta] is 25 to 35 [deg.].   A gable top type liquid paper container to which the cap according to claim 1 or 2 is attached by heat fusion.

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