JP2018150079A - Paper container for liquid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper container for liquid which is excellent in a display effect and can be differentiated from other paper containers.SOLUTION: Provided is a paper container for liquid which comprises a square cylindrical trunk part in that a first side plate, a second side plate, a third side plate and a fourth side plate continue in this order, a gable-roof-shaped top part that blocks one opening end of the trunk part, and a bottom part that blocks the other opening end of the trunk part. The top part is constituted by a first roof plate, a second gable-part-forming plate, a third roof plate, and a fourth gable-part-forming plate. The first roof plate and the third roof plate which are opposite to a first direction continue without comprising the first side plate, the third side plate, and horizontal rules respectively. The second gable-part-forming plate and the fourth gable-part-forming plate which are opposite to a second direction comprise folding pieces, a first shingle assembling piece which continues through a second slant horizontal rule, and a third shingle assembling piece which continues through a third slant horizontal rule, and comprise a fourth horizontal rule in the area of the folding piece partitioned by the second slant horizontal rule and the third slant horizontal rule.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a liquid paper container used for packaging liquid contents such as liquor, wine, coffee, juice, tea, tea, milk, and soup stock.

  Conventionally, as a liquid paper container to replace cans, bottles, and plastic bottles, the top that is often used for milk packs and liquor packs is often used as a gable-top type liquid paper container with a gable roof type, or a pack of juice, coffee, etc. A flat top type (brick type) liquid paper container having a flat top is widely known (see, for example, Patent Documents 1 and 2). Many of the tops are provided with plugs to give ease of pouring and resealability. As shown in FIG. 9, the conventional paperbell-type liquid paper container 100 includes a spout plug 104 on the roof plate 121 of the top 120. Also, as shown in FIG. 10, a conventional flat top type liquid paper container 200 is a so-called brick type liquid paper container having a rectangular parallelepiped shape in which a top 220 is flat and a spout 204 is provided on the top 220. It is. Although not shown, there is also known a flat top plate and an inclined plate provided on the top and provided with a spout stopper on the inclined plate.

  For these liquid paper containers, a laminate having an optimum configuration is used according to the gas barrier properties required for the contents. For example, in the case of the contents requiring high gas barrier properties, the printing layers are sequentially formed from the outer surface. / Polyethylene layer / paper layer / adhesive resin layer / aluminum foil layer / adhesive layer / polyethylene terephthalate layer / polyethylene layer or printed layer / polyethylene layer / paper layer / adhesive resin layer / deposition layer polyethylene terephthalate layer / polyethylene In the case of a content that may have a low gas barrier property, a laminate having a configuration in which a printed layer / polyethylene layer / paper layer / polyethylene layer is laminated in order from the outer surface is used. It has been.

  However, since these Gebel top type and brick type liquid paper containers are widely spread, there is a problem that they are not sufficiently differentiated from other products.

Japanese Utility Model Publication No. 60-37296 JP-A-5-310247

  Therefore, the present invention proposes a new form of liquid paper container by giving a feature to the shape of the top as a result of intensive research to solve the above problems, and the object of the present invention is the display effect. The object is to provide a liquid paper container that is excellent and can be differentiated from other products.

The present invention has been made in order to achieve the above-mentioned problems, and the present invention according to claim 1 is a quadrangular cylindrical shape in which a first side plate, a second side plate, a third side plate, and a fourth side plate are sequentially arranged. A liquid paper container comprising: a body part; a top part folded into a gable roof that closes one opening end of the body part; and a bottom part that closes the other opening end of the body part, The first roof plate, the second wife portion forming plate, the third roof plate, and the fourth wife portion whose tops are connected to the first side plate, the second side plate, the third side plate, and the fourth side plate, respectively. Composed of forming plates,
The first roof plate and the third roof plate facing in one direction are continuous with the first side plate and the third side plate without ruled lines, respectively, and the second wife facing in the two directions The portion forming plate and the fourth end portion forming plate are connected to the second side plate and the fourth side plate via a first ruled line, respectively, and connected to the folded piece via a second diagonal ruled line. And a first roof plate overlapping piece connected to the first roof plate, and a third roof plate overlapping piece connected to the third roof plate while connecting to the folding piece and a third diagonal ruled line, A liquid paper container comprising a fourth ruled line in a region of the folded piece defined by the first ruled line, the second diagonal ruled line, and the third diagonal ruled line.

  According to a second aspect of the present invention, there is provided the liquid paper container according to the first aspect, wherein the first ruled line is formed on the side of the second side plate and the fourth end portion from the second wife portion forming plate. It has a curved shape that bulges from the working plate to the side of the fourth side plate.

  According to a third aspect of the present invention, in the liquid paper container according to the first or second aspect, the first roof plate or the third roof plate at the top includes a spout stopper, When the outlet plug is opened, the second wife portion forming plate and the fourth wife portion forming plate are visible from the opening.

  The liquid paper container of the present invention is a liquid paper container of a new form, unlike the shape of the conventional paperbell top type or flat top type liquid paper container, the first roof plate and the first roof plate facing in one direction. The three roof plates are continuous without the first side plate and the third side plate and ruled lines, respectively, the second wife portion forming plate and the fourth wife portion forming plate facing in the two directions, A folded piece continuously connected to the second side plate and the fourth side plate via a first ruled line, and a first roof plate connected to the folded piece and a second oblique ruled line and connected to the first roof plate. A superposed piece and a third roof plate superposed piece connected to the folded piece and the third diagonal ruled line and connected to the third roof plate, the first ruled line, the second diagonal ruled line and the third diagonally lined The folds defined by ruled lines Display effect by a structure in which the inside areas comprises a fourth border, excellent design, other products and differentiation can be achieved.

It is an expanded view which shows the blank board of one Embodiment of the liquid paper container which concerns on this invention. It is sectional drawing explaining the laminated body sheet | seat which comprises the blank board of one Embodiment of the liquid paper container which concerns on this invention. It is a perspective view which shows one Embodiment of the liquid paper container which concerns on this invention. It is a front view which shows one Embodiment of the liquid paper container which concerns on this invention. It is a rear view which shows one Embodiment of the liquid paper container which concerns on this invention. It is a side view which shows one Embodiment of the liquid paper container which concerns on this invention. 1 shows an embodiment of a liquid paper container according to the present invention, in which (A) is a plan view and (B) is a bottom view. It is explanatory drawing which shows other embodiment of the liquid paper container which concerns on this invention, and shows the state which opened the spout stopper. It is a perspective view which shows the conventional paper bell type liquid paper container. It is a perspective view which shows the conventional flat top type liquid paper container.

The above-described present invention will be described in detail below with reference to the drawings.
FIG. 1 is a development view showing a blank plate of an embodiment of a liquid paper container according to the present invention, and FIG. 2 is a cross-sectional view illustrating a laminate sheet constituting the blank plate of an embodiment of the liquid paper container according to the present invention. 3 is a perspective view showing one embodiment of the liquid paper container according to the present invention, FIG. 4 is a front view showing one embodiment of the liquid paper container according to the present invention, and FIG. 5 is a view of the liquid paper container according to the present invention. FIG. 6 is a side view showing an embodiment of the liquid paper container according to the present invention, FIG. 7 shows an embodiment of the liquid paper container according to the present invention, and FIG. , (B) is a bottom view, FIG. 8 shows another embodiment of the liquid paper container according to the present invention, and is an explanatory view showing a state in which the spout stopper is opened, and FIG. 9 is a conventional paperbell type liquid paper container. FIG. 10 shows a conventional flat top type liquid paper container. 1, 1 ′ in the figure are liquid paper containers, 2 is a top heat fusion part, 3 is a bottom heat fusion part, 4, 104, 204 are spout stoppers, 5 is a laminate, 6 is an opening, 7 is an open spout body, 10 is a trunk, 11 is a first side plate, 12 is a second side plate, 13 is a third side plate, 14 is a fourth side plate, 15 is an adhesive plate, and 20 is a top portion. , 21 is a first roof plate, 22 is a second wife portion forming plate, 23 is a third roof plate, 23a is a spout plug mounting hole, 24 is a fourth wife portion forming plate, 22a and 24a are folded pieces, 22b, 24b is a first roof plate polymer piece, 22c, 24c is a third roof plate polymer piece, 30 is a bottom, 31, 32, 33, 34 is a bottom forming plate, 51 is a thermoplastic resin layer, 52 is a paper layer, 53 is an adhesive resin layer, 54 is a barrier layer, 55 is a heat-sealable resin layer, B is a blank plate, n1 is a first ruled line, n2 is a second diagonal ruled line, and n3 first Diagonal ruled line, n4 is the fourth ruled line, t is the ruled line, 100 is the conventional paperbell type liquid paper container, 120 is the top, 121 is the roof plate, 200 is the conventional flat top type liquid paper container, and 220 is the top Each is shown.

  FIG. 1 is a development view showing a blank plate of an embodiment of a liquid paper container according to the present invention, and FIG. 2 is a configuration example of a laminate sheet constituting the blank plate of an embodiment of the liquid paper container according to the present invention. FIG. 3 is a perspective view showing an embodiment of a liquid paper container according to the present invention assembled using the blank plate of FIG. As shown in FIG. 1, in the blank plate B used in the liquid paper container of the present invention, a first side plate 11, a second side plate 12, a third side plate 13, a fourth side plate 14 and an adhesive plate 15 are sequentially connected via ruled lines. The second end plate 12 and the fourth end portion forming plate 24 are connected to the upper end edges of the second side plate 12 and the fourth side plate 14 via the first ruled line n1, respectively. A first roof plate 21 and a third roof plate 23 are connected to the upper edge of the three side plate 13. The first side plate 11 and the first roof plate 21, and the third side plate 13 and the third roof plate 23 are continuous without providing ruled lines. The first ruled line n1 has a curved shape and bulges from the second wife forming plate 22 to the second side plate 12 and from the fourth wife forming plate 24 to the fourth side plate 14 side. Further, bottom forming plates 31, 32, 33, and 34 are connected to the lower end edges of the first side plate 11, the second side plate 12, the third side plate 13, and the fourth side plate 14 through ruled lines, respectively.

  The second end portion forming plate 22 includes a folded piece 22a connected to the second side plate 12 via the first ruled line n1, and a first roof plate overlapped to the first roof plate 21 via the ruled line. It consists of a piece 22b, a third roof plate 23 and a third roof plate overlap piece 22c connected via a ruled line, and the first roof plate overlap piece 22b and the folded piece 22a are partitioned by a second oblique ruled line n2, The third roof plate overlapping piece 22c and the folding piece 22a are partitioned by a third diagonal ruled line n3, the first roof plate overlapping piece 22b and the third roof plate overlapping piece 22c are triangular, and the folding piece 22a is substantially fan-shaped. is there.

  Similarly, the fourth end portion forming plate 24 includes a folded piece 24a that is provided continuously with the fourth side plate 14 via the first ruled line n1, and a third roof that is provided continuously with the third roof plate 23 via the ruled line. It consists of a plate overlap piece 24c and a first roof plate overlap piece 24b connected to the adhesive plate 15 via a ruled line, and the third roof plate overlap piece 24c and the folded piece 24a are partitioned by a third diagonal ruled line n3, The first roof plate overlapping piece 24b and the folding piece 24a are partitioned by the second diagonal ruled line n2, the third roof plate overlapping piece 24c and the first roof plate overlapping piece 24b are triangular, and the folding piece 24a is substantially fan-shaped. is there.

  Furthermore, a fourth ruled line n4 is provided in the area of the folding pieces 22a and 24a defined by the first ruled line n1, the second diagonal ruled line n2, and the third diagonal ruled line n3, and the fourth ruled line n4 includes the second diagonal ruled line n2 and the second diagonal ruled line n2. A mountain shape centered at a position slightly below the intersection of the three diagonal ruled lines n3 and going to the intersection of the first ruled line n1 and the second diagonal ruled line n2 and the intersection of the first ruled line n1 and the third diagonal ruled line n3 And a straight line extending from the center point to the intersection of the second diagonal ruled line n2 and the third diagonal ruled line n3. The second diagonal ruled line n2, the third diagonal ruled line n3, the fourth ruled line n4, and the first ruled line n1 may converge at their respective intersections or may be slightly spaced. By providing the fourth ruled line n4, when the blank plate B is bent and boxed and assembled into the liquid paper container 1, the second side plate 12, the fourth side plate 14, the second wife forming plate 22 and the fourth wife forming portion are formed. It is preferable that no wrinkles enter the plate 24. Further, the first side plate 11, the first roof plate 21, and the third side plate 11, the first roof plate 21, and the third side plate even if no ruled line is provided between the third side plate 13 and the third roof plate 23. Each of the boundary portions can be bent into a curved surface without any wrinkles entering 13 and the third roof plate 23. Further, the first ruled line n1 can be a straight line, but it is more preferable that the first ruled line n1 is a curved line that bulges downward.

  A ruled line provided in a substantially L shape with a straight line in the vertical direction at the center of the second side plate 12 and a horizontal line extending from the lower end to the first side plate 11 from the lower end thereof, and below the second side plate 12 from the lower end. The ruled lines t indicated by the mountain-shaped broken lines toward the respective corners on the side are for folding the folds at the ruled lines t when the liquid contents of the liquid paper container 1 are used and then being discarded. It is preferable to provide it. Note that the ruled lines indicated by the alternate long and short dash lines without reference numerals are necessary when the blank plate B is bent and manufactured in the liquid paper container 1. In addition, a spout stopper mounting hole 23a for attaching the spout stopper 4 (see FIG. 3) is provided in the upper part of the third roof plate 23.

  FIG. 2 shows a configuration example of the laminate 5 constituting the blank plate B of one embodiment of the liquid paper container 1 according to the present invention. As shown in FIG. 2, the laminate 5 includes a thermoplastic resin layer 51, a paper layer 52, an adhesive resin layer 53, a barrier layer 54, and a heat-fusible resin layer 55 in order from the top. As the barrier layer 54, a film made of aluminum foil, polyethylene terephthalate, nylon or the like, a film in which aluminum, aluminum oxide, silicon oxide, or the like is vapor-deposited on these films, or a laminate of those films is used. The Further, the barrier layer 54 may be omitted depending on the type of liquid content to be filled.

  The blank plate B is formed from a laminate of a single sheet or a take-up (roll). For example, in the case of take-up, a ruled rule having a predetermined shape while rewinding the roll of the laminate taken up in a long length, Printing is performed by a printing machine equipped with a die roll having a ruled line (cutting blade), and a blank plate B having a predetermined shape is manufactured in-line.

  For example, the blank plate B is subjected to end face processing such as skive hemming so that the paper layer 52 does not directly contact the liquid contents on the adhesive plate 15, and then the fourth wife of the blank plate B shown in FIG. The part forming plate 24, the fourth side plate 14, the bottom forming plate 34, and the end face treated adhesive plate 15 are integrally folded along a vertical ruled line and folded to the second side plate 12 and the third side plate 13 side. The first roof plate 21, the first side plate 11, and the bottom forming plate 31 are folded along a vertical ruled line, folded to the second side plate 12 and the third side plate 13, and heat bonding of the overlapping end-face treated adhesive plate 15. The heat-sealable resin layer 55 and the first side plate 11, the first roof plate 21, and the bottom-forming plate 31 are heat-sealed to the heat-sealable resin layer 55 and are attached in a cylinder, and are attached to a cylinder before the assembly is completed. The folded state is assumed to be flat. In addition, the blank board B shown in FIG. 1 is the figure seen from the heat-fusible resin layer 55 side of the inner surface. This is supplied to a known liquid filling and sealing device, and a folded flat paper container is opened to form a square cylinder with both ends opened, and the bottom forming plates 31, 32, 33, and 34 are ruled lines. The bottom heat-sealed portion 3 is formed by folding heating and pressure bonding, and the bottom portion 30 is formed, the spout stopper 4 is joined to the spout stopper mounting hole 23a, the liquid content is filled from the top opening, and then the second The top portion 20 is formed by folding the end portion forming plate 22 and the fourth end portion forming plate 24, and then the inner surface heat-fusible resin layer 55 and the outer surface thermoplastic resin layer 51 are heated. The top portions of the first roof plate 21, the second wife forming plate 22, the third roof plate 23, and the fourth wife forming plate 24 are superposed and pressure bonded to form the top heat fusion portion 2 and at the same time the top portion 20. As a result, the assembly of the liquid paper container 1 is completed.

  FIG. 3 is a perspective view showing the liquid paper container 1 according to the embodiment of the present invention. The liquid paper container 1 assembled and completed from the blank plate B is sequentially arranged as shown in FIG. Reference), the second side plate 12 (see FIG. 1), the third side plate 13 and the fourth side plate 14 are connected to each other in a square tubular body 10 and a gable roof shape that closes one open end of the body 10. A folded top part 20 and a bottom part 30 closing the other opening end of the body part 10 are provided. The upper part of the top part 20 is heat-sealed and sealed by the top heat-sealing part 2, and the spout plug 4 comprising a spout main body and a cap is inserted into the spout plug attachment hole 23 a on the top of the third roof plate 23. Is attached.

  In the liquid paper container 1 of the present invention, the third roof plate 23 and the third side plate 13 are continuous without providing ruled lines. Therefore, the boundary portion is not bent and is a smooth curved surface. Although not visible in FIG. 3, the boundary between the first roof plate 21 and the first side plate 11 in the direction facing the third roof plate 23 and the third side plate 13 (referred to as one direction) is also a smooth curved surface. It has become. The first roof plate 21 and the third roof plate 23 facing each other in one direction are continuous with the first side plate 11 and the third side plate 13 without any ruled line, respectively. The liquid paper container has a different image, has an appealing effect to consumers, is excellent in display effect and design, and can be differentiated from other products. Furthermore, since no ruled line is provided, when pouring the contents, the liquid is less likely to be turbulent and can be poured smoothly.

  The fourth end portion forming plate 24 includes a folded piece 24a connected to the fourth side plate 14 via a curved first ruled line n1 bulging toward the fourth side plate 14, and a folded piece 24a and a second diagonal ruled line n2. And the first roof plate overlapping piece 24b connected to the first roof plate 21 and the third roof connected to the folded roof piece 24a and the third diagonal ruled line n3 and to the third roof plate 23. A plate overlap piece 24c is provided (see FIG. 1). The folded piece 24a, which is valley-folded at the second diagonal ruled line n2 and the third diagonal ruled line n3 and mountain-folded at the first ruled line n1, has a substantially fan-shaped inclined surface descending from the top to the bottom. The plate overlap piece 24b is mountain-folded at the ruled line connected to the first roof plate 21 and superposed on the inner surface of the first roof plate 21, and the third roof plate overlap piece 24c is mountain-folded at the ruled line connected to the third roof plate 23. And polymerized on the inner surface of the third roof plate 23.

  Furthermore, the 4th ruled line n4 is provided in the area | region of the folding piece 24a. The fourth ruled line n4 is preferably provided because it can prevent wrinkles on the surface when the folded piece 24a is folded, and an excellent appearance can be obtained. Further, it is more preferable that the first ruled line n1 has a curved shape that bulges toward the fourth side plate 14 because the folding of the folding pieces 24a can be smoothly performed and wrinkles can be prevented from occurring on the surface. Although not visible in FIG. 3, the second wife forming plate 22 and the second side plate 12 in the direction facing the fourth wife forming plate 24 and the fourth side plate 14 (referred to as the two directions) are also in the same state. The effects obtained are the same, and the description is omitted.

  In addition, the horizontal cross-sectional area of the square cylinder formed by the first side plate 11, the second side plate 12, the third side plate 13, and the fourth side plate 14 is the square cylindrical horizontal of a conventional paperbell top type liquid paper container. When the cross-sectional area in the direction is the same, it is necessary to make the height of the top portion 20 a little higher than that of a conventional paperbell type liquid paper container in order to make the internal volume the same. However, a conventional liquid paper container filling device can be used only by adjusting the height. Further, by increasing the height of the top portion 20, the first roof plate 21, the first side plate 11, the third roof plate 23, and the third side plate 13 are continuous and smooth curved surfaces without providing ruled lines. There is also an effect that the amount of liquid remaining in the contents can be reduced. In addition, by providing the fourth ruled line n4, the space formed by the folding piece 24a, the first roof plate overlapping piece 24b, the third roof plate overlapping piece 24c, and the folding piece 22a, the first roof plate overlapping piece 22b, The space formed by the third roof plate overlapping piece 22c is wider than the conventional gable top type liquid paper container, and fingers are applied to the first roof plate overlapping pieces 22b and 24b of the respective spaces from the first roof plate 21 side. Since it can be held with one hand, the contents can be easily dispensed. Furthermore, since the height of the top portion 20 is higher than that of a conventional paperbell type liquid paper container, the apex angle of the top portion 20 formed by the first roof plate 21 and the third roof plate 23 becomes sharp, and the second side plate. When the 12 and the fourth side plates 14 are folded along the ruled line t in a direction approaching each other, the second wife portion forming plate 22 and the fourth wife portion forming plate 24 are also easily folded.

  FIG. 4 is a front view of the liquid paper container 1 of the present invention. As shown in FIG. 4, the third roof plate 23 is continuous with the third side plate 13 without providing ruled lines. FIG. 5 is a rear view of the liquid paper container 1 according to the present invention. As shown in FIG. 5, the first roof plate 21 is continuous with the first side plate 11 without a ruled line. By providing different designs, the display effect is excellent, the appeal is increased, and the product can be differentiated from other products.

  FIG. 6 is a side view of the liquid paper container 1 of the present invention. The folding piece 24a of the fourth wife forming plate 24 and the fourth ruled line n4 formed in the region, the first ruled line n1, and the fourth ruled line The side plate 14 and a ruled line t for folding the used liquid paper container at the time of disposal are visible. The fourth ruled line n4 is centered on a position slightly lower than the lower end of the top heat-sealing part 2 (intersection of the second diagonal ruled line n2 and the third diagonal ruled line n3, the second diagonal ruled line n2 and the first ruled line n1). , The third diagonal ruled line n3 and the first ruled line n1). Although not visible in FIG. 6, the second wife forming plate 22 in the two directions facing the fourth wife forming plate 24 is also in the same state. The fourth ruled line n4 prevents wrinkles generated on the surface when the fourth wife portion forming plate 24 and the second wife portion forming plate 22 are folded. If the same effect can be obtained, the fourth ruled line n4 has this shape. It is not limited. Also, the first ruled line n1 is preferably a curved shape because an effect of preventing wrinkles on the surface can be obtained.

  FIG. 7 (a) is a plan view showing the first roof plate 21, the third roof plate 23, and the top heat-sealing portion 2, and the third roof plate 23 has a spout comprising a spout main body and a cap. A stopper 4 is attached. FIG. 7B is a bottom view showing the bottom forming plates 31 and 33 and the bottom heat-sealing portion 3.

  FIG. 8 shows another embodiment of the liquid paper container 1 according to the present invention, and is an explanatory view showing a state in which the spout stopper 4 is opened. The periphery of the spout stopper 4 corresponding to FIG. 4 is enlarged. Show. The liquid paper container 1 ′ of the other embodiment includes the spout stopper 4 on the third roof plate 23 of the top portion 20 as in FIG. 4. The spout stopper 4 is usually a combination of a spout main body and a cap and is not particularly limited. The spout main body that forms the spout is not shown, but includes an opening closing member including a cylindrical tube portion, a flange portion, and a planned opening portion in the tube portion. For example, an annular shape that is a planned opening portion in the opening closing member And a pull ring (pick portion) that facilitates opening by pinching at the tip of the picking means is connected to a portion near the thin weakened portion in the region of the planned opening portion, and the cylindrical portion. The outer wall is provided with a screw screwed into the cap. The cap is formed of a cylindrical peripheral wall and a top portion that closes one end, and an inner wall of the peripheral wall is provided with a screw that engages with the screw provided in the cylindrical portion of the spout body. FIG. 4 shows a state where the cap is screwed into the spout main body and set, and the spout plug 4 shows the cap set on the spout main body.

  And the opening 6 of this spout plug 4 was removed by the cap, picked up the pull ring in the tubular portion of the spout main body, and pulled upward to destroy the thin fragile portion, and was bitten by the thin fragile portion. The area is removed and opened. FIG. 8 shows the opened state. In the liquid paper container 1 ′ of other embodiments, when the spout stopper 4 is opened, the second wife portion forming plate 22 and the fourth wife portion forming plate 24 can be visually recognized from the opening 6. Specifically, as shown in FIG. 8, the third roof plate overlap piece 22 c of the second wife portion forming plate 22 and the third roof plate overlap piece 24 c of the fourth wife portion forming plate 24 are formed in a letter C from the opening 6. It looks like a shape. Thus, when the spout stopper 4 is opened, the second wife portion forming plate 22 and the fourth wife portion forming plate 24 can be seen in a square shape from the opening 6, thereby suppressing the pulsation of the contents. It is preferable because smooth pouring can be performed. The spout stopper 4 may be provided on the first roof plate 21 of the top portion 20. In addition, the code | symbol 7 of FIG. 8 has shown the spout main body opened by removing the cap and removing the area | region covered by the thin weak part.

As shown in FIG. 8, when the spout stopper 4 is opened, the second wife part forming plate 22 and the fourth wife part forming plate 24 can be seen from the opening.
1) Method of enlarging the diameter of the spout stopper 4 2) Method of providing the position where the spout stopper 4 is provided on the top heat fusion part 2 side 3) The third roof plate overlapping piece 22c of the second wife forming plate 22 And the method of changing the inclination of the C-shape formed at the edge of the fourth roof plate overlapping piece 24c of the third roof plate overlapping piece 24c on the spout plug 4 side, that is, the extension of the C-shape. 4) A method of combining the above methods 1 to 3 and the like.

  The embodiments described so far are only a few embodiments of the liquid paper container according to the present invention, and the liquid paper container according to the present invention is not limited to this, Any category that does not depart from the spirit of the present invention is included in the present invention.

DESCRIPTION OF SYMBOLS 1, 1 'Liquid paper container 2 Top part heat-fusion part 3 Bottom part heat-fusion part 4, 104, 204 Outlet plug 5 Laminated body 6 Opening 7 Opened spout main body 10 trunk | drum 11 First side plate 12 Second side plate 13 Third side plate 14 Fourth side plate 15 Adhesive plate 20 Top 21 First roof plate 22 Second wife forming plate 23 Third roof plate 23a Outlet plug mounting hole 24 Fourth wife forming plate 22a, 24a Folding piece 22b, 24b First roof plate polymer piece 22c, 24c Third roof plate polymer piece 30 Bottom 31, 32, 33, 34 Bottom forming plate 51 Thermoplastic resin layer 52 Paper layer 53 Adhesive resin layer 54 Barrier layer 55 Thermal fusion Resin layer B Blank plate n1 1st ruled line n2 2nd diagonal ruled line n3 3rd diagonal ruled line n4 4th ruled line t ruled line 100 Conventional paperbelt-type liquid paper container 120 Top part 121 Roof board 200 Subordinate Liquid cartons 220 top of the flat top type

Claims (3)

In order, a quadrangular tubular body having a first side plate, a second side plate, a third side plate, and a fourth side plate,
A top folded into a gable roof that closes one open end of the barrel,
A bottom for closing the other open end of the body;
A liquid paper container comprising:
The first roof plate, the second wife forming plate, the third roof plate, and the fourth wife, the top portion of which is connected to the first side plate, the second side plate, the third side plate, and the fourth side plate, respectively. It consists of a part forming plate,
The first roof plate and the third roof plate facing in one direction are continuous without the ruled line with the first side plate and the third side plate, respectively.
The second wife portion forming plate and the fourth wife portion forming plate facing in the second direction are each a folded piece continuously connected to the second side plate and the fourth side plate via a first ruled line, and the folded portion. A first roof plate overlapping piece connected to the first roof plate and connected to the piece via the second diagonal ruled line, and connected to the third roof plate and connected to the folding piece via a third diagonal ruled line A third roofing sheet superposed piece
A liquid paper container comprising a fourth ruled line in a region of the folded piece defined by the first ruled line, the second diagonal ruled line, and the third diagonal ruled line. The first ruled line has a curved shape that bulges from the second wife forming plate to the second side plate and from the fourth wife forming plate to the fourth side plate. The liquid paper container according to claim 1. The first roof plate or the third roof plate at the top is provided with a spout stopper, and when the spout stopper is opened, the second wife part forming plate and the fourth wife part forming from the opening. The liquid paper container according to claim 1, wherein the plate is visible.

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