JP2000281108A - Spout for liquid paper container - Google Patents

Abstract

(57) [Problem] To provide a stopper for a liquid paper container which suppresses loosening from a cap body of a cap, is completely sealed, and is easy to handle the cap. [MEANS FOR SOLVING PROBLEMS] Consisting of a plug body 100 and a cap 200,
The plug body is provided with a flange 120 on the outer peripheral surface of the cylindrical peripheral wall 110.
A female screw 111 is provided above the inner peripheral surface, an inner ring 112 is provided below, and the cap is provided with a flange 230 on an outer peripheral surface of a cylindrical peripheral wall 220 provided with a top plate 210 at an upper end. A male screw 221 is provided on the lower outer peripheral surface, and an outward hook 222 is provided on the lower end.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spout for a liquid paper container which is completely sealed without loosening the cap.

[0002]

2. Description of the Related Art In general, a plug for a liquid paper container comprises a plug body and a cap which is screwed to the plug body. The structure of the plug body is a male plug on the outer peripheral surface of a cylindrical peripheral wall. Set the screw,
The lower end is provided with a flange (flange-shaped ring) that is thermally fused to the container. The cap is provided on the lower surface of the top plate with a contact ring and an inner ring (usually a contact) for sealing the mouth of the plug body. Provided inside the ring), and a female screw that is screwed into a male screw of the plug body is provided on the inner peripheral surface of the cylindrical peripheral wall.

[0003]

However, in the above-mentioned conventional plug for a liquid paper container, the cap is loosened from the plug main body due to an external impact during the distribution process, and a liquid leakage accident or the like occurs. There was something. For this reason, packing is sometimes inserted between the top plate of the cap and the upper end of the peripheral wall of the plug body in order to prevent liquid leakage due to loosening of the cap.

The present invention solves the above-mentioned problem of the conventional plug for a liquid paper container, and suppresses the loosening of the cap from the plug body, completes the sealing, and facilitates the handling of the cap. It is intended to provide a stopper for a paper container.

[0005]

That is, the first aspect of the present invention is as follows.
The invention comprises a plug body and a cap, wherein the plug body is provided with a flange on an outer peripheral surface of a cylindrical peripheral wall, a female screw is provided above an inner peripheral surface, and an inner ring is provided below,
The cap is characterized in that a flange is provided on an outer peripheral surface of a cylindrical peripheral wall provided with a top plate on an upper end, a male screw is provided on an outer peripheral surface below the flange, and an outer hook is provided on a lower end. It is a stopper for liquid paper containers.

Next, a second invention of the present invention comprises a plug body and a cap, wherein the plug body has a contact ring provided on an upper end surface of a cylindrical peripheral wall, and a flange provided on an outer peripheral surface, A female screw is provided above the inner peripheral surface, an inner ring is provided below, and the cap is provided with a flange on an outer peripheral surface of a cylindrical peripheral wall provided with a top plate on an upper end, and a male is provided on an outer peripheral surface below the flange. A stopper for a liquid paper container, wherein a screw is provided and an outer hook is provided at a lower end.

Next, a third invention of the present invention comprises a plug main body and a cap, wherein the plug main body is provided with a flange on an outer peripheral surface of a cylindrical peripheral wall, and a female screw is provided above an inner peripheral surface. Is provided, an inner ring is provided below, and the cap is provided with a flange having a contact ring on a lower surface on an outer peripheral surface of a cylindrical peripheral wall provided with a top plate at an upper end, and a male screw is provided on an outer peripheral surface below the flange. A stopper for a liquid paper container, wherein the stopper is provided at the lower end in an outward direction.

According to a fourth aspect of the present invention, there is provided the liquid according to the first to third aspects, wherein knurls are provided on the outer peripheral surface of the peripheral wall above the flange of the cap. It is a stopper for paper containers.

[0009]

According to the plug for a liquid paper container of the present invention, the outer peripheral surface below the peripheral wall of the cap and the inner ring provided on the inner peripheral surface below the peripheral wall of the plug main body are tightly sealed, and Loose cap does not lead to liquid leakage,
If necessary, the lower surface of the flange of the cap and the upper end surface of the peripheral wall of the plug body are sealed by a contact ring, so that the sealing state between the plug body and the cap is perfect.

An outer hook is provided at the lower end of the peripheral wall of the cap, and the hook comes into contact with the tip of an inner ring provided on the inner peripheral surface below the peripheral wall of the plug body. Looseness is suppressed so that a liquid leaks from the main body.

Further, since a female screw is provided on the inner peripheral surface of the peripheral wall of the plug main body to be screwed with a male screw provided on the outer peripheral surface below the flange of the peripheral wall of the cap. In dividing the diameter, the outer diameter of the cap can be reduced, so that the cap can be easily grasped with fingers, and a knurl can be provided on the outer peripheral surface above the flange of the peripheral wall of the cap, so that the handling of the cap can be performed. Easy to do.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a stopper for a liquid paper container according to the present invention.

The plug (10) for a liquid paper container according to the present invention, as shown in FIG. 2, comprises a plug body (100) and a cap (200) screwed onto the plug body to cap. Is done. The plug body and the cap are made by injection molding using a thermoplastic resin such as polyethylene or polypropylene, but the materials of the plug body and the cap may be changed as necessary.

As shown in FIG. 1 (b), the structure of the plug body (100) of one embodiment of the plug for a liquid paper container of the present invention is a contact ring formed on the upper end surface of a cylindrical peripheral wall (110). (113), a flange (120) on the outer peripheral surface, a female screw (111) above the inner peripheral surface, and an inner ring (112) below.

As shown in FIG. 1A, the structure of the cap (200) is substantially the middle of the outer peripheral surface of the cylindrical peripheral wall (220) provided with the top plate (210) at the upper end in the vertical direction. A flange (230) is provided to abut the upper end surface and lower surface of the peripheral wall of the plug body, a knurl (223) is provided on the outer peripheral surface of the peripheral wall above the flange, and the female member of the plug body is provided on the lower peripheral surface. A male screw (221) to be screwed with the screw is provided, and an outer hook (222) is provided at the lower end to abut on the inner ring of the plug body.

According to the method of attaching a spout to a liquid paper container according to the present invention, the peripheral wall above the flange of the spout main body is projected from the spout mounting hole of the liquid paper container, and the upper surface of the flange is attached to the liquid paper container. Heat sealing to the inner surface of the liquid paper container by ultrasonic sealing or by inserting the peripheral wall below the flange of the plug body into the plug mounting hole of the liquid paper container, and ultrasonically applying the lower surface of the flange to the outer surface of the liquid paper container. It is thermally fused by a sealing method or the like.

Next, the state of the plug was observed after passing through the ordinary paper distribution process and the storage period of the liquid paper container having the plug attached thereto and filled with the contents according to the embodiment of the present invention. No looseness to the plug body was observed, and there was no liquid leakage related to the plug.

[0018]

According to the plug for a liquid paper container of the present invention, when the cap is screwed onto the plug main body, the inner ring of the plug main body is tightly sealed on the outer peripheral surface of the peripheral wall of the cap, and the cap is slightly sealed. The looseness does not cause liquid leakage, and, if necessary, the lower surface of the flange of the cap and the upper end surface of the peripheral wall of the plug body are sealed by a contact ring, so that the sealing state is complete.

Also, the hook provided at the lower end of the peripheral wall of the cap abuts against the tip of the inner ring of the plug body, and the cap does not become loose enough to cause liquid leakage from the plug body.

In addition, the outer diameter of the cap can be reduced by dividing the outer diameter of the plug body, so that the cap can be easily grasped by a finger, and a knurled eye can be provided on the outer peripheral surface of the peripheral wall of the cap. It is easy to handle the cap.

[Brief description of the drawings]

1A is a cross-sectional view of a cap of a plug for a liquid paper container according to an embodiment of the present invention, and FIG. 1B is a cross-sectional view of a plug main body.

FIG. 2 is a sectional view of a stopper for a liquid paper container according to an embodiment of the present invention.

[Explanation of symbols]

 10: stopper for liquid paper container 100: stopper body 110: peripheral wall 111: female screw 112: contact ring 113: inner ring 120: flange 200: cap 210: top plate 220: Perimeter wall 221 Male screw 222 Hanging 223 Knurl eyes

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E060 CF06 DA18 EA03 3E084 AA12 AA34 AB01 BA02 CA01 CC04 CC05 DA01 EA04 EB03 EC04 EC05 FA09 FB03 GA04 GB04 HA03 HB02 HC03 HD04 KB01 LA17 LB02 LB07

Claims (4)

[Claims] 1. A plug body comprising a plug body and a cap, wherein said plug body is provided with a flange on an outer peripheral surface of a cylindrical peripheral wall, a female screw is provided above an inner peripheral surface, and an inner ring is provided below. The cap is characterized in that a flange is provided on an outer peripheral surface of a cylindrical peripheral wall provided with a top plate on an upper end, a male screw is provided on an outer peripheral surface below the flange, and an outer hook is provided on a lower end. Spout for liquid paper containers. 2. A plug body comprising a plug body and a cap, wherein said plug body is provided with a contact ring on an upper end surface of a cylindrical peripheral wall, a flange on an outer peripheral surface, and a female screw above an inner peripheral surface. , Provided an inner ring below, the cap,
For a liquid paper container, a flange is provided on an outer peripheral surface of a cylindrical peripheral wall having a top plate provided at an upper end, a male screw is provided on an outer peripheral surface below the flange, and an outer hook is provided at a lower end. Spout. 3. A plug body comprising a plug body and a cap, wherein the plug body is provided with a flange on an outer peripheral surface of a cylindrical peripheral wall, a female screw is provided above an inner peripheral surface, and an inner ring is provided below. The cap is provided with a flange having a contact ring on a lower surface on an outer peripheral surface of a cylindrical peripheral wall provided with a top plate on an upper end, a male screw is provided on an outer peripheral surface below the flange, and an outer hook is provided on a lower end. A spout for a liquid paper container. 4. The stopper for a liquid paper container according to claim 1, wherein knurls are provided on the outer peripheral surface of the peripheral wall above the flange of the cap.