JP2005112445A - Stopper with liquid dripping preventive function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stopper with a liquid dripping preventive function, which improves the pouring state of a content upon using the stopper to prevent a liquid dripping. <P>SOLUTION: The stopper comprises a spout 100 projected at a spout position on a paper-made liquid container 20, and a cap 200 which has a top board 210, on the under surface of which a packing 30 is attached, and is screwed on the spout 100. The spout 100 has a circular pedestal part 110 which is made by forming a flange 130 on the peripheral face of the lower end of the spout 100, and a spout cylinder 120 erected on the pedestal part 110. An air guide cylinder 140, whose upper end is at the level position of the top face of the spout cylinder while lower end is projected inside the circular pedestal part and the horizontal sectional shape is a semicircle, is annexed in the circumferential direction to the inner surface of the spout cylinder at a plurality of spots at regular intervals. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a spout with a dripping prevention function, which is composed of a spout projecting from a pouring position of a liquid paper container used for liquid contents and a cap screwed onto the spout.

  2. Description of the Related Art Conventionally, a liquid paper container (20) used for food, toiletries, chemicals, and the like has a gable roof-shaped top inclined plate (22) with a rectangular tubular body (21) as shown in FIG. In addition, the spout (100) (outlet tool) having a cap (10) with a cap (200) screwed in is projected over a wide range of applications in consideration of convenience during use. It was. The structure of the spigot (10) is composed of a spout (100), a cap (200) and a packing (30) as shown in FIGS. 2 (a) and 2 (b), for example. On the annular pedestal portion (110) provided with a flange (130), a pouring tube (120) provided with a male screw (121) on the outer peripheral surface is erected, and the cap is disposed on the top plate (210) and the inner peripheral surface. A spout pour cylinder comprising a peripheral wall (220) provided with a female screw (221) and protruding at the pour position (23) of the liquid paper container (20) by thermally fusing the upper surface of the flange to the inner surface of the container. In addition, a cap with a packing ring provided under the top plate (210) is screwed. And when pouring out the contents, the cap was unscrewed from the spout pipe of the spout, the container was inclined, and the contents were poured out from the tip opening of the pour pipe.

  However, in the case of the above-mentioned conventional plugs, the contents may drip onto the outer peripheral surface of the dispensing cylinder in the case of a small-diameter plug, when the contents are reduced, or depending on the viscosity of the contents. was there.

  The present invention solves the problems of the above-described conventional plugs, and provides a plug with a dripping prevention function that prevents dripping by improving the state of dispensing the contents during use. It is.

  That is, the first invention of the present invention comprises a spout projecting at the pouring position of the liquid paper container and a cap for engaging a packing under the top plate that is screwed to the spout, and the spout has a lower end outer periphery. A pouring tube is erected on an annular pedestal portion that has a flange around the surface, and the upper end protrudes from the inner surface of the pouring tube at the top horizontal position of the pouring tube and the lower end protrudes inside the annular pedestal. A mouth plug with a dripping prevention function, characterized in that air introduction cylinders having a semicircular horizontal cross section are provided at a plurality of locations at equal intervals in the circumferential direction.

Next, according to a second aspect of the present invention, when the inner peripheral radius of the extraction cylinder is R ₁ and the inner peripheral radius of the air introduction cylinder is R ₂ , at least R ₁ = R ₂ × 1.5˜ The mouth plug with a dripping prevention function according to the first invention, characterized by satisfying R ₂ × 4.0.

  Next, a third invention of the present invention is the liquid according to the first or second invention, characterized in that there are at least three places where the air introduction cylinder is attached to the inner surface of the dispensing cylinder. It is a plug with a dripping prevention function.

  According to a fourth aspect of the present invention, there is provided the mouthpiece with a dripping prevention function according to any one of the first to third aspects, wherein the inner height of the annular pedestal is at least 1.0 mm. is there.

  The mouth plug with a dripping prevention function of the present invention is an air introduction cylinder having a semicircular horizontal cross-sectional shape in which the upper end projects horizontally from the top surface of the pouring cylinder and the lower end protrudes inside the annular pedestal. Are attached at a plurality of locations at equal intervals in the circumferential direction. Also, the inner peripheral radius of the extraction cylinder and the inner peripheral radius of the air introduction cylinder, the number of air introduction cylinders, the inner height of the annular pedestal portion As a result, when the cap is unscrewed from the spout, the container is tilted, and the contents are poured out from the tip opening of the dispensing tube, air is introduced well from one of the air introducing tubes. The content is poured out well and dripping is prevented.

  Next, an embodiment of the mouth plug with a dripping prevention function of the present invention will be described in detail with reference to the drawings.

  Fig.1 (a) is sectional drawing of the stopper with a dripping prevention function of this embodiment, FIG.1 (b) is a top view of the spout. FIG. 3 is a perspective view of an example of a liquid paper container in which a stopper is provided on the top inclined plate.

  As shown in FIG. 1A, the spout (10) with a liquid dripping prevention function of the present embodiment includes a spout (100) protruding from the pouring position (23) of the liquid paper container (20) and the spout. The cap (200) is provided with a locking ring (222) provided with a packing (30) under the top plate (210) to be screwed to the spout, and the spout and the cap are made of thermoplastic resin such as polyethylene or polypropylene. And produced by an injection molding method.

  As shown in FIGS. 1A and 1B, the structure of the spout (100) of the present embodiment is such that the lower end outer peripheral surface of the annular pedestal portion (110) and the upper surface exceed the inner surface of the liquid paper container (20). A flange (130) to be heat-sealed by a sonic seal method or the like is provided around, and a pouring tube (120) is erected on the upper surface of the annular pedestal, and a male screw (121) with a spout is provided on the outer peripheral surface of the pouring tube. An air introduction tube (140) having a semicircular horizontal cross-sectional shape in which the upper end is horizontally positioned on the top surface of the extraction tube and the lower end protrudes inside the annular pedestal is provided on the inner surface of the extraction tube in the circumferential direction, etc. Attached to multiple locations at intervals.

As shown in FIG. 1B, if the inner peripheral radius of the extraction tube (120) is R ₁ and the inner peripheral radius of the air introduction tube (140) is R ₂ , at least R ₁ = R ₂ × It is designed to satisfy 1.5 to R ₂ × 4.0, and preferably designed to satisfy R ₁ = R ₂ × 2.0 to R ₂ × 3.0. . The inner peripheral radius R ₁ of the extraction cylinder needs to be increased as the viscosity of the contents is higher and the amount of extraction is larger. The inner peripheral radius of the air introduction cylinder R ₂ is also the contents. The higher the viscosity is, the larger it is necessary.

  Moreover, although the place which attaches the air introduction pipe | tube (140) to the inner surface of the extraction pipe | tube (120) is provided in at least 3 places or more, as shown in FIG. It is provided. In addition, at two places, when the container is inclined and the contents are poured out from the tip opening of the dispensing cylinder, the two air introduction cylinders are blocked by the contents, and it is difficult to introduce air well. Occasionally, a good dispensing state may not be obtained.

  In addition, the inner height of the annular pedestal is such that the contents do not enter from the lower end of the air introduction cylinder that introduces air when the container is tilted and the contents are poured out from the tip opening of the dispensing cylinder. It is designed to be at least 1.0 mm or more, but preferably designed to be 2.5 mm or more.

  The spout structure of the stopper with a dripping prevention function of the present invention is not limited to the stopper of a liquid paper container, and the mouth of a container having rigidity that does not crush the trunk and push the contents out of the mouth It is also possible to apply to.

(A) is sectional drawing of the stopper with a dripping prevention function of one Embodiment of this invention, (b) is a top view of the spout. (A) is sectional drawing of the stopper used for an example of the conventional liquid paper container, (b) is a top view of the spout. It is a perspective view of an example of a liquid paper container which protrudes from the top inclined plate.

Explanation of symbols

10 ... Mouth plug 20 ... Liquid paper container 21 ... Body 22 ... Top inclined plate 23 ... Pouring position 30 ... Packing 100 ... Spout 110 ... Annular base 120 ... Pouring cylinder 121 ... ... male screw 130 ... flange 140 ... air introduction tube 200 ... cap 210 ... top plate 220 ... peripheral wall 221 ... female screw 222 ... engagement ring

Claims (4)

  An annular pedestal portion having a spout projecting at a pouring position of the liquid paper container and a cap for fastening a packing under a top plate screwed to the spout, the spout being provided on a lower end outer circumferential surface with a flange. An air introduction cylinder having a semicircular horizontal cross-sectional shape in which the upper end is horizontally positioned on the top surface of the extraction cylinder and the lower end protrudes to the inside of the annular pedestal. Is attached to a plurality of locations at equal intervals in the circumferential direction. R ₁ = R ₂ × 1.5 to R ₂ × 4.0 is satisfied, where R ₁ is an inner peripheral radius of the extraction tube and R ₂ is an inner peripheral radius of the air introduction tube. The mouth plug with a dripping prevention function according to claim 1.   The mouth plug with a dripping prevention function according to claim 1 or 2, wherein there are at least three places where the air introduction cylinder is attached to the inner surface of the dispensing cylinder.   4. The mouth plug with a dripping prevention function according to claim 1, wherein an inner height of the annular pedestal portion is at least 1.0 mm or more.

Images