JP2000226027A - Cap with built-in unsealing blade - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a cap with a built-in unsealing blade for unsealing in a good manner even when a ceramic deposited film is used as a sealing film. SOLUTION: A cap is formed of a cap main body protruded and outer fitted on a pouring hole of a liquid paper container sealed with a sealing film and a cap thereof, and when the cap screwed and fitted on the cap main body is removed, an unsealing cylindrical body is moved downward by the rotation of the cap to break a sealed film, and a plurality of triangular unsealing blades 120 formed continuously in the horizontal direction, suspended from the lower end face and having roots 121 with the position difference (h) downward from the lower end face 111 are formed on the lower end face 111 of the cylindrical main body 100.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to sake, fruit juice beverages,
The present invention relates to a spout with a built-in opening blade protruding from the top of a liquid paper container at normal temperature such as a seasoning.

[0002]

2. Description of the Related Art Conventionally, a liquid paper container has a square body, and is provided with a gutter roof-shaped top inclined plate for discharging and sealing for convenience in use. The one with a spout was widely used.

[0003] The plug includes a plug having a built-in opening blade for breaking a sealing film sealing a container at the time of use. For example, a plug disclosed in Japanese Utility Model Publication No. 5-35058 is disclosed. is there. The spout incorporating the opening blade is attached to an ejection hole of a liquid paper container sealed with a rupturable film (in the present invention, a sealing film) and a cylindrical portion corresponding to the ejection hole (the present invention). Then, a spouting device (in the present invention, a plug body) including a spouting tube, and a substantially tubular opening blade (in the present invention, inserted into a cylindrical portion of the spouting device and having a blade portion at a lower edge thereof) Opening cylinder) and a cap attached so as to cover the cylindrical portion. Both the inner surface of the cylindrical portion and the outer surface of the opening blade opposite thereto can slide in contact with each other and move in the vertical direction. The opening blade is provided so as to be vertically movable with respect to the cylindrical portion, and the opening blade is inclined upward from the upper edge toward the lower edge side on the cylindrical wall portion of the opening blade, and the slope faces upward. The cap has a cylindrical body having a guide slope facing downward and slidingly contacting the slope of the opening blade. Are those in which a tear blade during rotation of the lowerable in order to dispense the contents, when removing by rotating the cap, for example, FIG. 3
As shown in (b), the opening blade (opening cylinder in the name of the present invention) (100) is lowered by the rotation of the cap (300), and the blade portion (opening blade in the present invention) provided at the tip end.
In (120), the film for sealing the container (in the present invention, the sealing film) (400) was broken to open the container.

[0004]

Since a gas barrier property is required for a sealing film, a laminated film using an aluminum foil as a barrier layer has been used.
However, in this sealing film, in the disposal treatment after use, the residue of the aluminum foil remains at the time of incineration, and it is difficult to reuse the sealing film. Therefore, recently, as a sealing film,
As a substitute for a conventional laminated film using an aluminum foil as a barrier layer, a ceramic vapor-deposited film obtained by vapor-depositing silicon oxide or the like on a polyethylene terephthalate film tends to be used. However, unlike a sealing film using a conventional aluminum foil, the sealing film using the ceramic vapor-deposited film has elongation.
As shown in (a) and (b), a conventional built-in opening blade is formed so that a valley (121) between the opening blades (120) is on the same horizontal plane as the lower end surface of the cylindrical body (110). In the opening blade (120) of the plug (100), the sealing film was hardly broken due to the elongation of the sealing film, and the commercial value of the product was sometimes deteriorated.

The present invention has solved the above-mentioned problem of the conventional plug with a built-in opening blade, and provides a plug with a built-in opening blade with a good opening even with a sealing film using a ceramic vapor deposition film.

[0006]

That is, the first aspect of the present invention is as follows.
The invention is characterized in that the plug body comprises a cap body and a cap which are externally protruded from a discharge hole of a liquid paper container sealed with a sealing film and movably incorporates an opening tubular body. At the time of removing the cap screwed into the cap, the cap is rotated to move the opening cylinder downward to break the sealing film. A plurality of triangular opening blades vertically connected to the lower end surface and connected vertically are formed by forming a valley between the opening blades with respect to the lower end surface of the cylindrical body downward so as to have a positional difference downward. It is a plug with a built-in opening blade.

In a second aspect of the present invention, there is provided a port which is internally provided and protrudes from a plug mounting hole of a liquid paper container, has an opening tubular body movably incorporated therein, and has a lower end sealed with a sealing film. A plug comprising a plug body and a cap, wherein the cap is rotated to move the unsealing cylinder downward to break the sealing film when removing the cap screwed to the plug body. In the opening tubular body, a plurality of triangular opening blades vertically connected to the lower end face of the tubular body in the horizontal direction, the valley between the opening blades with respect to the lower end face of the tubular body. A plug with a built-in opening blade, which is formed by providing a position difference downward.

[0008]

According to the conventional opening plug with a built-in opening blade, the sealing film is first cut into a broken circular shape by a plurality of triangular opening blades provided at the lower end of the opening cylindrical body which descends at the time of opening. In the case of a sealing film using a ceramic vapor-deposited film, since the film has a large elongation, after being cut by the opening blade, it is further pulled by the valley between the opening blade and the lower end surface of the opening cylindrical body, Break the film. Therefore, a large force is required to break the sealing film.

On the other hand, in the plug with a built-in opening blade of the present invention, a plurality of triangular opening blades provided at the lower end of the opening cylindrical body which descends at the time of opening first form the sealing film into a broken circular shape. After being cut, the film is further pulled to the lower end surface of the opening tubular body by the valley between the plurality of opening blades to break the film. For this reason, even with a sealing film using a ceramic vapor deposition film having a large elongation, no force is required to break the sealing film as compared with a conventional opening blade of a plug with a built-in opening blade.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION
3), as shown in FIG. 3A, a plug body (200) that movably incorporates an opening tubular body, and a cap (300) that is screwed to and attached to the plug body. A flange provided on the upper surface of the periphery of the pouring hole (21) of the liquid paper container (20) sealed with the sealing film (400), at the lower end of the pouring cylinder (210) of the plug body (200). The lower surface of (220) is so-called externally attached by heat-sealing and bonding by an ultrasonic sealing method or the like, and as shown in FIG. 3 (b), is attached to the plug body (200) to open the container. When the cap (300) to be screwed and mounted is removed, the opening cylinder (100) is moved downward by rotation in the removing direction of the cap, and the sealing film (400) is broken to open the cap. It is.

Another plug with a built-in opening blade according to the present invention comprises a cap body and a cap which movably incorporates a tubular body for opening and seals a lower end with a sealing film. Injection of the plug body by so-called internal bonding, in which the upper surface of the flange provided around the lower end of the spout cylinder of the plug body is heat-sealed and bonded by ultrasonic sealing or the like to the inner surface of the periphery of the plug mounting hole. The cap is attached by projecting the cap from the spigot mounting hole, and when removing the cap that is screwed into the spigot main body to open the container, the opening cylinder is moved downward by rotating the cap in the removal direction. Then, the sealing plug is broken and opened.

The opening blade (120) of the opening cylindrical body (100) of the plug with a built-in opening blade of the present invention is, as shown in FIGS. 1 (a) and (b), a cylindrical body of the opening cylindrical body. Body (110)
A plurality of triangular opening blades (12
0) are connected vertically in the horizontal direction, and the valleys (121) between the opening blades are formed in the lower end surface (11) of the cylindrical body.
It is formed by providing a position difference (h) downward with respect to 1). The magnitude of this positional difference is set according to the degree of elongation of the sealing film used. If necessary, as shown in FIGS. 1 (a) and 3 (b), in forming the opening blade (120) on the lower end surface (111) of the cylindrical body (110), a notched blade is used. Part (122) is provided, and the sealing film (400) is opened with the opening cylinder (100).
When broken in (1), broken pieces of the sealing film (401)
Is to prevent falling into the contents (30) stored in the container. 1 (a) and 1 (b)
As shown in the figure, the tubular body (11) of the tubular body for opening (100)
On the outer peripheral surface of (0), there are usually four sliding projections (1) with the plug body.
12), and usually two guide slopes (113) with the cap are formed on the inner peripheral surface. The opening cylinder is manufactured by injection molding using a rigid thermoplastic resin such as polypropylene.

The plug with a built-in opening blade according to one embodiment of the present invention has a lower opening strength of about 2 kgF than a conventional plug with a built-in opening blade when a ceramic vapor deposited film is used as a sealing film.

[0014]

As described above, according to the plug with a built-in opening blade of the present invention, the valley between the opening blades of the opening cylindrical body is formed with respect to the lower end face of the cylindrical main body even when a ceramic vapor-deposited film having large elongation is used for the sealing film. It is formed so as to have a positional difference downward and absorbs the elongation of the sealing film, so that the opening property is extremely good unlike a conventional plug with a built-in opening blade.

[Brief description of the drawings]

FIG. 1 (a) is a side view of an embodiment of an opening tubular body of a plug with a built-in opening blade of the present invention, and FIG. 1 (b) is a developed view seen from the outside thereof.

FIG. 2 (a) is a side view of an example of a conventional opening cylindrical body of an opening plug with a built-in opening blade, and FIG. 2 (b) is a developed view as viewed from the outside.

FIG. 3A is an explanatory view showing a state before opening a liquid paper container to which a conventional example of a plug with a built-in opening blade is attached;
(B) is an explanatory view showing a state at the time of opening.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Opening blade built-in stopper 20 ... Liquid paper container 21 ... Outlet hole 30 ... Contents 100 ... Opening cylinder 110 ... Cylindrical main body 111 ... Lower end surface 112 ... Sliding protrusion 113 ... Guide slope 120 ... Opening blade 121 ... Valley 122 ... Cut-off part 200 ... Plug body 210 ... Discharge cylinder 220 ... Flange 300 ... Cap 400 ... Sealing film 401 ... Fragment h …… Position difference

Claims (2)

[Claims] The invention is characterized in that the plug comprises a cap body and a cap which are externally protruded from a discharge hole of a liquid paper container sealed with a sealing film and movably house an opening cylinder. When removing the cap screwed and attached to the main body, the cap body rotates the opening tubular body downward to break the sealing film. A plurality of triangular opening blades vertically connected to and vertically connected to the lower end surface of the cylindrical body, a valley between the opening blades is formed with a positional difference downward with respect to the lower end surface of the cylindrical body. Features a plug with a built-in opening blade. 2. A cap body comprising: a cap main body and a cap projecting internally from a cap mounting hole of a liquid paper container, movably house an opening cylinder, and seal a lower end with a sealing film. When removing the cap screwed and attached to the plug body, the cap is rotated to move the opening cylinder downward and break the sealing film. A plurality of triangular opening blades vertically connected to the lower end surface of the body body and connected vertically are formed by providing a valley between the opening blades with respect to the lower end surface of the cylindrical body with a positional difference downward. A spout with a built-in opening blade.