JP2006069554A - Bung for paper-made container for liquid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bung for a paper-made container for liquid which is mounted on the upper part opening f of the paper-made container 50 for liquid prepared of a paper-laminated material or the like which stores a juice, wines, a japanese sake with a mellow fragrance, whose ordinary upper face is flat or a gable roof-shape, and is opened by rotating a screw-type cap 20 to break a breakable film 60 by sawteeth c, c, c, ... of a lowering cylindrical body 30 lowered, and which is provided with a clear unsealing feeling at a first time being clearly different from a second opening. <P>SOLUTION: In the bung for the paper-made container for liquid, facing longitudinal cutting channels 10 and 10 prepared by cutting a pushing-down cylindrical body 21 are provided on the lower part of the pushing-down cylindrical body 21 of a screw type cap 20, and facing projections 11 and 11 for providing an unsealing feeling which fit these longitudinal cutting channels 10 and 10 and release therefrom are provided on the inner face side on the lower part of a lowering cylindrical body 30. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention is attached to the upper opening f of a liquid paper container 50 made of a paper laminate material or the like, which contains a scented juice, Western liquor, Japanese sake, etc., and has a flat top surface or a gable roof shape. The saw blades c 1, c 2 of the descending cylinder 30 lowered by rotating the screw-type cap 20.
, c,... relates to a stopper for a liquid paper container having a first clear opening feeling that breaks and opens the breakable film 60.

Conventionally, a push-down cylindrical body 21 provided with inclined convex cams a, a facing the outer surface side is connected to the inner surface of the top plate, and the screw type cap 20 shown in FIG. 4B is opposed to the inner surface side. A descending cylindrical body 30 shown in FIG. 4C, which has an inclined convex cam b 1, b and a plurality of saw blades c 1, c 2, c 3,... 4A, a screw cap for the liquid paper container shown in FIGS. 3A and 4A, comprising a screw-type cap main body 40 shown in FIG.
Liquid paper container 50 made of a paper laminate material having various barrier properties such as a normal flat top surface or a gable roof as shown in FIGS. 4E and 4F, which contains juice having a fragrant fragrance, Western liquor, Japanese sake, etc. As shown in FIG. 3A, the screw-type plug body 40 is melted on the upper surface around the upper opening f sealed with a breakable film 60 made of an aluminum foil laminated material having various barrier properties. As shown in FIG. 3B, the lower surface of the flanged flange d is attached by heat-sealing via a fusion donut plate 61 having excellent heat-fusion properties, and then the screw-type cap 20 is rotated. The opposing inclined convex cams a 1, a of the push-down cylindrical body 21 rotating in the direction and the opposing inclined convex cams b 1, b of the descending cylindrical body 30 slide, respectively, so that the inner surface side of the plug body 40 The lowering cylindrical body 30 fitted in (see FIG. 4A) Is lowered, and the breakable film 60 is broken and opened by the saw blades c 1, c 2, c 3,... Of the descending cylinder 30, and the screw-type cap 20 is simply removed as shown in FIG. In general, a mouthpiece for a liquid paper container that can be opened and has an excellent effect of retaining a rich scent is widely used.

The patent literature is as follows.
Japanese Utility Model Publication No. 6-42983

  However, with regard to the conventional stoppers for liquid paper containers shown in FIGS. 3 and 4, which have excellent fragrance retention, etc., the customer purchases juice, liquor, sake, etc. contained in the liquid paper container 50. When the screw-type cap 20 is rotated and opened and opened for the first time, the breakable film 60 is broken and opened by the saw blades c 1, c 2, c 3,. Although there is resistance (open feeling), the resistance is slight and without sound, so there is no clear opening feeling at the first time. There was a concern that the liquid paper container 50 containing juice, Western liquor, Japanese sake, etc. with a fragrant smell might have been opened and opened before purchase due to mischief or fraud.

3 and 4, when the screw cap 20 is rotated and opened for the second time, as shown in FIGS. 3B and 3C, the descending cylindrical body 30 is used. The breakable film 60 broken and opened by the saw blades c 1, c 2, c 3,. The inclined convex cams 30a, a and the inclined convex cams b, b opposite to the descending cylindrical body 30 are respectively fitted to the inner surface side of the plug body 40 and lowered. However, since it remains fitted and lowered, it can be opened with almost no resistance as in the case of a normal screw-type bottle cap (not shown).

  Accordingly, an object of the present invention is to provide an upper opening f of a liquid paper container 50 made of a paper laminated material or the like having a flat top surface or a gable roof shape, which contains a juice having a rich fragrance, Western liquor, Japanese sake and the like. The film 60 that can be broken by the saw blades c 1, c 2, c 3,... Of the descending descending cylindrical body 30 is broken and opened by rotating the screw-type cap 20. The object of the present invention is to provide a mouthpiece for a liquid paper container, which is clearly different from the time when the liquid paper container is given.

The stopper for the liquid paper container according to claim 1 of the present invention is a screw type in which a pressing cylindrical body 21 provided with inclined convex cams a, a facing the outer surface side is connected to the inner surface of the top plate. The cap 20, the inclined convex cams b 1, b opposite to the inner surface side, and a plurality of saw blades c 1, c 2, c 3,. A liquid paper container cap comprising a descending cylindrical body 30 and a screw-type cap main body 40 provided with a fusion flange d at the bottom, and is a paper having a flat upper surface or a gable roof shape. The lower surface of the fusion flange d of the screw-type cap body 40 is thermally fused to the upper surface around the upper opening f sealed with the breakable film 60 of the liquid paper container 50 made of laminated material or the like. After the mounting, by rotating the screw-type cap 20, the descending cylindrical body 30 fitted to the inner surface side of the plug body 40 is lowered. In the conventional stopper for liquid paper container shown in FIGS. 3 and 4, the film 60 that can be broken by the saw blades c 1, c 2, c 3,... ,
As shown in FIG. 1, opposed vertical kerfs 10, 10 obtained by cutting the push-down cylinder 21 are provided in the lower part of the push-down cylinder 21 of the screw-type cap 20, and the lower part of the descending cylinder 30. 1 is a stopper for a liquid paper container provided with opposing opening feeling imparting projections 11, 11 which are fitted into and detached from the vertical kerfs 10, 10 on the inner surface side.

In addition, as shown in FIG. 2E, the stopper for the liquid paper container according to claim 2 of the present invention is provided with a push-down cylindrical body 21 provided with inclined convex cams a, a facing the outer surface side. A cap main body 40 provided with a screw-type cap 20 connected to the inner surface of the plate, inclined convex cams b 1, b opposite to the inner surface side, and a large number of saw blades c 1, c 2, c 3,. A liquid paper comprising a descending cylindrical body 30 fitted and lowered on the inner surface side, and a screw-type cap body 40 provided with a fusing flange d at the bottom and sealed with a film 60 capable of breaking the lower end opening. The screw-type cap main body 40 is melted on the lower surface around the upper opening f of the liquid paper container 50 made of a paper laminate material having a flat top or a gable roof shape. After the upper surface of the fitting flange d is attached by heat fusion, the screw type key is installed in the same manner as the liquid paper container stopper shown in FIGS. By rotating the cup 20, the descending cylinder 30 fitted to the inner surface side of the plug body 40 is lowered, and the film 60 that can be broken by the saw blades c 1, c 2, c 3,. In a stopper for a liquid paper container that breaks and opens,
As shown in FIG. 2, opposed vertical kerfs 10, 10 obtained by cutting the push-down cylinder 21 are provided in the lower part of the push-down cylinder 21 of the screw-type cap 20, and the lower part of the descending cylinder 30. 1 is a stopper for a liquid paper container provided with opposing opening feeling imparting projections 11, 11 which are fitted into and detached from the vertical kerfs 10, 10 on the inner surface side.

In the stopper for the liquid paper container according to the first and second aspects of the present invention, the descending cylindrical body 30 fitted to the inner surface side of the stopper main body 40 is obtained by rotating the screw-type cap 20. For the liquid paper container, the film 60 that is lowered and breaks and opens the breakable film 60 with the saw blades c 1, c 2, c 3,. As shown in FIGS. 1 and 2, opposite vertical cut grooves 10, 10 obtained by cutting the push-down cylinder 21 are provided at the lower part of the push-down cylinder 21 of the screw-type cap 20. In addition, by providing opposite opening feeling imparting projections 11, 11 which are fitted into and detached from the vertical kerfs 10, 10 on the inner surface side of the lower part of the descending cylindrical body 30,
When a customer purchases juice, liquor, sake, etc. contained in a liquid paper container 50 and opens and opens the screw-type cap 20 for the first time, as shown in FIG. 3B, it rotates horizontally. The opposing inclined convex cams a 1, a of the push-down cylindrical body 21 and the opposing inclined convex cams b 1, b of the descending cylindrical body 30 are fitted to the inner surface side of the plug body 40 by sliding. In addition to the slight resistance (open feeling) described above, the descending cylindrical body 30 descends and breaks and opens the breakable film 60 with the saw blades c 1, c 2, c 3,. Relatively provided on the inner surface side of the lower part of the descending cylindrical body 30 descending in the vertical kerfs 10, 10 which are provided in the lower part of the cylindrical body 21 of the screw-type cap 20 and rotate in the horizontal direction. When the unsealing feeling imparting projections 11 and 11 to be engaged are fitted, Because of the crisp sound and clear resistance at the time of separation, the customer has a clear opening feeling that is clearly different from the first time opening the second time when there is almost no resistance. Can be recognized.

  In addition, in the cap for a liquid paper container according to claim 1 and claim 2 of the present invention, the lower cylinder 21 is cut at the lower portion of the lower cylinder 21 of the screw-type cap 20. By providing the vertical kerfs 10, 10, elasticity can be imparted in the vicinity of the vertical kerfs 10, 10, and on the inner surface side of the lower part of the descending descending cylinder 30. Since the provided opening feeling imparting projections 11, 11 make a clicking sound, especially when they are fitted in the vertical kerfs 10, 10, the customer can feel a clearer opening feeling for the first time. Can be recognized.

As described above, in the stopper for a liquid paper container according to the present invention, as shown in FIG. 1 and FIG. In the lower part of the pressing cylinder 21 of the cap 20, opposed vertical kerfs 10, 10 obtained by cutting the pressing cylinder 21 are provided, and on the inner surface side of the lower part of the descending cylinder 30, this vertical cutting is provided. By providing opposing opening feeling imparting projections 11 and 11 that are fitted into and removed from the grooves 10 and 10,
It is installed in the upper opening f of a liquid paper container 50 made of a paper laminate material, which has a flat top surface or a gable roof shape, and contains a juice having a rich fragrance, Western liquor, Japanese sake, etc. By rotating the cap 20, the film 60 that can be broken is broken and opened by the saw blades c 1, c 2, c 3,. A liquid paper container cap that allows customers to recognize a clear opening feeling for the first time. A liquid paper container 50 containing purchased juice, liquor or sake is purchased for mischief or fraud. It is possible to provide a spigot for a liquid paper container that does not cause fear that it has been previously opened and opened.

  In the mouthpiece for the liquid paper container of the present invention, the opposed vertical kerfs 10 and 10 provided at the lower portion of the push-down cylinder 21 of the screw-type cap 20 and cutting the push-down cylinder 21 are respectively shown. As shown in FIGS. 1A, 1B, 2A, and 2B, the vertical kerfs 10 and 10 having a length and a width of about 3.6 × 1.2 mm which are cut from the pressed cylinder 21 are screwed. The cap 20 can be provided in the lower part of the depressed cylinder 21.

  In the stopper for the liquid paper container of the present invention, the opposing opening feeling imparting protrusions which are provided on the inner surface of the lower part of the descending cylindrical body 30 and are fitted into and separated from the above-described opposing vertical kerfs 10 and 10. 11 and 11, on the surface of the opposed inclined convex cams b and b (thickness 0.6 mm) on the inner surface at the lower part of the descending cylindrical body 30 which is fitted and lowered to the inner surface side of the plug body 40. As shown in FIGS. 1C, 1D, 2C, and 2D, the opening feeling imparting protrusions 11 and 11 having a length, width, and height (wall thickness) of about 1.8 × 0.9 × 0.3 mm are opposed to each other. The inner surface of the lower part of the descending cylindrical body 30 can be provided.

  1A and 1B are a cut-away side view and a cut-away bottom view of a screw-type cap 20 connected to a push-down cylindrical body 21 of a stopper for a liquid paper container in Embodiment 1 of the present invention. 1C and 1D are a side view and a broken bottom view of the descending cylindrical body 30 of the stopper for the liquid paper container, and FIG. 1E is a cross-sectional view of the stopper for the liquid paper container.

  3A is a cross-sectional view of a conventional stopper for a liquid paper container, and FIGS. 3B and 3C are cross-sectional views showing a state in which the stopper for a conventional liquid paper container is opened and opened. 4A is a broken bottom view of a conventional liquid paper container stopper, and FIGS. 4B, 4C, and 4D are continuous connection of a push-down cylinder 21 of a conventional liquid paper container stopper. FIGS. 4E and 4F are side views of the screw-type cap 20, the descending cylindrical body 30, and the screw-type cap body 40. FIGS. FIG. 3 is a perspective view of a flat or gable roof liquid paper container 50.

  That is, a conventional cylindrical body 21 having an outer diameter of 12 mm provided with inclined convex cams a, a facing the outer surface side is connected to the inner surface of the top plate, and has a conventional outer diameter of 24 mm and a height of 16 mm shown in FIG. 4B. In the screw-type cap 20, the vertical cylinder 21 is cut at the lower part of the cylindrical cylinder 21 of the screw-type cap 20, and the vertical and horizontal widths are 3.6 × 1.2 mm. An injection molding method using a normal polyethylene resin similar to the conventional one, with a screw-type cap 20 provided with continuous cut-off cylinders 21 of Example 1 shown in FIGS. It was made with.

  Also, the inclined convex cams b, b facing the inner surface side and a plurality of saw blades c, c, c,... In the descending cylindrical body 30 having an outer diameter of 16 mm (inner diameter of 14 mm) and a height of 14 mm as shown in FIG. On the surface of the material, the above-mentioned vertical kerfs 10 and 10 are fitted to and detached from each other, and the vertical, horizontal, and height (wall thickness) are 1.8 × 0.9 × 0.3 mm to provide a relative opening feeling. A descending cylindrical body 30 of Example 1 shown in FIGS. 1C and 1D provided with protrusions 11 and 11 was produced by an injection molding method using a normal polyethylene resin similar to the conventional one.

  Furthermore, a conventional screw-type plug body 40 having an inner diameter of 18 mm (outer diameter of 21 mm) and a height of 18 mm shown in FIG. It was produced by the method.

Next, as shown in FIG. 4A, the descending cylindrical body 30 with an outer diameter of 16 mm of Example 1 shown in FIGS. 1C and 1D and the conventional screw-type plug body 40 with an inner diameter of 18 mm shown in FIG. Four vertical projections h 1, h 2, h 2,... Between the upper and lower annular projections g 1, g 2 on the inner surface side of the plug body 40, and four upper fitting projections on the outer surface side of the descending cylinder 30. The outer surface side of the descending cylindrical body 30 is fitted to the inner surface side of the screw-type cap body 40 so that i 1, i 2, i 1, i fit and move up and down (down). 1A and 1B, a screw-type cap 20 is provided at the lower part of the push-down cylinder 21. The screw-type cap 20 is connected to the push-down cylinder 21 of the first embodiment shown in FIGS. Vertical kerf 10
, 10 and a screw-type cap 20 so that the unsealing feeling imparting projections 11, 11 provided on the inner surface of the lower part of the descending cylindrical body 30 are rotated and screwed to the right so that they can be detached. Then, a cap for the liquid paper container of Example 1 shown in FIG. 1E, which is composed of the descending cylindrical body 30 and the screw-type cap body 40, was produced.

Subsequently, the mouthpiece for the liquid paper container comprising the screw-type cap 20, the descending cylindrical body 30, and the screw-type mouthpiece body 40 of Example 1 shown in FIG. Various barriers of the liquid paper container 50 made of a paper laminate material having a gable roof shape of 85 × 85 × 275 mm in height, width, and height of the normal storage portion shown in FIG. 4F. As shown in FIGS. 1E and 3A, the fusion flange of the screw-type cap body 40 is formed on the upper surface around the upper opening f sealed with a breakable film 60 made of an aluminum foil laminate material having excellent properties. The lower surface of d is heat-fused via a fusion donut plate 61 having excellent heat-fusibility (by simultaneously fusing the breakable film 60 and the end of the fusion donut plate 61). When I did
Similar to the conventional stopper for liquid paper container shown in FIGS. 3 and 4, the screw-type cap 20 is only half-turned to the left in the opening direction, and as shown in FIG. The opposing inclined convex cams a 1, a of the rotating push-down cylindrical body 21 and the opposing inclined convex cams b 2, b of the descending cylindrical body 30 are fitted to the inner surface side of the plug body 40 by sliding. 3 (see FIG. 4A), the descending cylinder 30 is lowered, and the breakable film 60 is broken and opened by the saw blades c 1, c 2, c 3,. As described above, it was possible to obtain a mouthpiece for a liquid paper container that can be easily removed by removing the screw-type cap 20 and that has an excellent scent retention effect.

  FIGS. 2A and 2B are a cutaway side view and a cutaway bottom view of a screw-type cap 20 connected to a push-down cylindrical body 21 of a stopper for a liquid paper container in Embodiment 2 of the present invention. 2C and 2D are a side view and a broken bottom view of the descending cylindrical body 30 of the stopper for the liquid paper container, and FIG. 2E is a cross-sectional view of the stopper for the liquid paper container.

  That is, the same as in the first embodiment shown in FIGS. 1A and 1B described above, the screw-type cylindrical body 21 provided with the inclined convex cams a and a opposed to the outer surface is provided on the inner surface of the top plate. Embodiment 2 shown in FIGS. 2A and 2B, wherein the cap 20 is provided with opposite longitudinal kerfs 10 and 10 obtained by cutting the push-down cylinder 21 in the lower part of the push-down cylinder 21 of the screw-type cap 20. A screw-type cap 20 provided with a continuous cylindrical body 21 and an inclined convex cam b, b opposite to the inner surface side and a plurality of saws at the lower end, the same as in the first embodiment shown in FIGS. 1C and 1D. In the descending cylinder 30 that is provided with blades c 1, c 2, c 2,... And descends by fitting to the inner surface side of the plug body 40, the vertical cutting described above is formed on the inner surface side of the lower part of the descending cylinder 30. 2C and 2D, provided with opposite opening feeling imparting projections 11 and 11 which are fitted into and removed from the grooves 10 and 10, respectively. An injection molding method using the same conventional polyethylene resin as the conventional screw-type cap body 40 having the lowering cylindrical body 30 of Example 2 shown in FIG. It was made with.

2C and 2D, the lowering cylindrical body 30 of the second embodiment shown in FIGS. 2C and 2D and the above-described conventional screw-type plug main body 40 are arranged in the same manner as in the first embodiment. , The four vertical protrusions h 1, h 2, h 2,.
, i 1, i 2, i are fitted to move up and down (down) so that the outer surface side of the descending cylindrical body 30 is fitted to the inner surface side of the screw-type cap body 40, A screw-type cap 20 in which a push-down cylinder 21 of Example 2 shown in FIGS. After turning to the right so that the unsealing sensation imparting projections 11, 11 provided on the inner surface of the lower part of the descending cylindrical body 30 are fitted to and detached from the cut grooves 10, 10, As shown in FIG. 2E, the lower end opening of the screw-type plug body 40 is formed by a breakable film 60 made of an aluminum foil laminated material having various barrier properties (by heat fusing to the lower surface of the fusion flange d). The embodiment shown in FIG. 2E, which is sealed and comprises a screw-type cap 20, a descending cylindrical body 30, and a screw-type cap body 40. A stopper for a liquid paper container of No. 2 was prepared.

2E, the stopper for the liquid paper container including the screw-type cap 20, the descending cylindrical body 30, and the screw-type stopper main body 40 of the second embodiment shown in FIG. As shown in FIG. 2E, a screw-type cap is formed on the lower surface of the upper opening f not sealed with the breakable film 60 of the liquid paper container 50 made of a paper laminate material having a gable roof shape. When the upper surface of the fusion flange d of the main body 40 is inserted by heat fusion (inserted from the inner surface side of the upper opening f),
Similar to the cap for the liquid paper container of the first embodiment, the descending cylindrical body 30 fitted to the inner surface side of the cap body 40 is lowered only by half-turning the screw-type cap 20 leftward in the opening direction. The lower end opening of the screw-type plug body 40 is sealed with the saw blades c 1, c 2, c 3,... Of the descending cylinder 30, and can be made of aluminum foil laminated material having various barrier properties. It was possible to obtain a stopper for a liquid paper container excellent in the effect of retaining a rich fragrance, which can be opened by breaking the film 60.

In the stopper for the liquid paper container according to the first and second embodiments of the present invention, the descending cylindrical body 30 fitted to the inner surface side of the stopper main body 40 is obtained by simply rotating the screw-type cap 20 to the left. In the stopper for the liquid paper container that is lowered and opened by breaking the film 60 that can be broken by the saw blades c 1, c 2, c 3,. The lower cylinder 21 is provided with opposite longitudinal kerfs 10, 10 each having a longitudinal and lateral width of 3.6 × 1.2 mm obtained by cutting the pressed cylinder 21. The vertical, horizontal, and height are 1.8 × 0.9 × 0.3 mm, which are fitted to and detached from the vertical kerfs 10, 10 on the surfaces of the opposed inclined convex cams b 1, b on the inner surface side. By providing the opposite opening feeling imparting protrusions 11, 11,
When a customer purchases 2000 ml of sake contained in a liquid paper container 50 and opens and opens the screw-type cap 20 half-turn leftward in the opening direction for the first time, the cylinder 21 of the screw-type cap 20 is pushed down. The opposite opening sensation imparting projections 11, 11 provided on the inner surface of the lower part of the descending cylindrical body 30 are fitted into the opposite vertical kerfs 10, 10 provided in the lower part of the lower cylindrical body 30. The customer recognizes a clear opening feeling that is clearly different from the second opening because there is a clicking sound when it is done, and there is a clear resistance when leaving. It was possible to obtain a stopper for a liquid paper container that can be used.

  nothing special.

1A and 1B in the first embodiment of the present invention are a cut-away side view and a cut-away bottom view of a screw-type cap 20 connected to a push-down cylindrical body 21 of a cap for a liquid paper container. 1C and 1D are a side view and a broken bottom view of the descending cylindrical body 30 of the stopper for the liquid paper container, and FIG. 1E is a cross-sectional view of the stopper for the liquid paper container. FIGS. 2A and 2B in a second embodiment of the present invention are a cutaway side view and a cutaway bottom view of a screw-type cap 20 connected to a push-down cylindrical body 21 of a plug for a liquid paper container. 2C and 2D are a side view and a broken bottom view of the descending cylindrical body 30 of the stopper for the liquid paper container, and FIG. 2E is a cross-sectional view of the stopper for the liquid paper container. 3A is a cross-sectional view of a conventional stopper for a liquid paper container, and FIGS. 3B and 3C are cross-sectional views showing a state in which the stopper for a conventional liquid paper container is opened and opened. 4A is a broken bottom view of a conventional stopper for a liquid paper container, and FIGS. 4B, 4C, and 4D are screws connected to a push-down cylindrical body 21 of the stopper for a conventional liquid paper container. FIGS. 4E and 4F are side views of the cap 20, the descending cylindrical body 30, and the screw-type cap body 40, and FIG. 4E and FIG. It is a perspective view of the liquid paper container 50 of a roof shape.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Vertical cut groove 11 ... Opening feeling provision protrusion 20 ... Screw-type cap 21 ... Depressed cylinder 30 ... Descent cylinder 40 ... Plug body 50 ... Liquid paper container 60 ... Breakable film 61 ... Fusion donut Plate a, b ... Inclined convex cam c ... Saw blade d ... Fusing flange f ... Upper opening g ... Annular protrusion h ... Vertical protrusion i ... Fitting protrusion

Claims (2)

A push-down cylindrical body 21 provided with inclined convex cams a 1, a facing the outer surface side, a screw-type cap 20 connected to the inner surface of the top plate, and inclined convex cams b 1, b facing the inner surface side, A plurality of saw blades c 1, c 2, c 3,... Provided at the lower end, a descending cylindrical body 30 that is fitted and lowered on the inner surface side of the plug body 40, and a screw type provided with a fusion flange d at the bottom. A mouthpiece for a liquid paper container comprising a mouthpiece body 40 and sealed with a breakable film 60 of a liquid paper container 50 made of a paper laminate material having a flat top surface or a gable roof shape. After the lower surface of the fusion flange d of the screw-type plug body 40 is heat-sealed and attached to the upper surface around the stopped upper opening f, the screw-type cap 20 is rotated to rotate the plug body. The descending cylindrical body 30 fitted to the inner surface side of 40 descends and breaks at the saw blades c 1, c 2, c 3,. In a plug for a liquid paper container that breaks and opens a possible film 60,
Opposite vertical kerfs 10 and 10 obtained by cutting the push-down cylindrical body 21 are provided in the lower part of the push-down cylindrical body 21 of the screw-type cap 20, and the vertical inner groove side of the lowering cylindrical body 30 is provided with this vertical cut groove 10. A cap for a liquid paper container provided with opposing opening-feeling projections 11, 11 that are fitted into and removed from the cut grooves 10, 10. A push-down cylindrical body 21 provided with inclined convex cams a 1, a facing the outer surface side, a screw-type cap 20 connected to the inner surface of the top plate, and inclined convex cams b 1, b facing the inner surface side, A plurality of saw blades c 1, c 2, c 2,... Provided at the lower end, a descending cylindrical body 30 that fits and falls on the inner surface side of the plug body 40, and a fusion flange d is provided at the lower portion to provide a lower end opening. A screw-type cap main body 40 sealed with a breakable film 60, and a cap for a liquid paper container, which has a flat upper surface or a gable roof, and is made of a paper laminated material or the like After the upper surface of the fusion flange d of the screw-type cap body 40 is heat-sealed and attached to the lower surface around the upper opening f of the liquid paper container 50, the screw-type cap 20 is rotated to rotate the mouth. The descending cylindrical body 30 fitted to the inner surface side of the stopper body 40 is lowered, and the saw blades c 1, c 2, c 3, 4 of the descending cylindrical body 30 are lowered. In a plug for a liquid paper container that breaks and opens the breakable film 60,
Opposite vertical kerfs 10 and 10 obtained by cutting the push-down cylindrical body 21 are provided in the lower part of the push-down cylindrical body 21 of the screw-type cap 20, and the vertical inner groove side of the lowering cylindrical body 30 is provided with this vertical cut groove 10. A cap for a liquid paper container provided with opposing opening-feeling projections 11, 11 that are fitted into and removed from the cut grooves 10, 10.

Images