JP2019182522A - Liquid paper container - Google Patents

Abstract

To provide a liquid paper container that causes no hindrance to stacking of paper containers in a vertical direction while providing a spout and a lid member for facilitating pouring.SOLUTION: A brick-type liquid paper container 1 is formed with a slope 26 defined by two folding lines 21 and 22 connecting two apexes p1 and p2 of a top and front panels shared between the top and front panels with a body part 10 adjacent to one side of a substantially rectangular shape of the top surface 15 as the front panel 11. One of the folding lines 22 is convex on a top surface side, and the other 21 is convex on a front panel side. An intrusion amount c into the top surface side from a straight line connecting the two shared apexes of the folding line convex to the top surface side is half equal or less of the distance d to a seal part 17 on the top surface side. A spout member 20 is attached to a slope.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a liquid paper container, and more particularly to a liquid paper container that is easily stacked vertically while a spout member that facilitates pouring is attached.

  Liquid paper containers used for liquid contents of foods and non-foods are widely used for liquid drinks such as fruit juice drinks, juices, teas, coffees, milk drinks, soups, and alcoholic beverages such as sake and shochu. A liquid paper container is formed by folding one end of a square cylindrical barrel at right angles to form a flat bottom, and folding the other end of the barrel to form various top shapes. An opening is provided in the body near the surface to serve as a spout for the contents. In addition to a flat surface, the top surface has various shapes, such as a slanted shape, a gable top shape with a gable roof shape, and a slant top shape with a partially sloping shape. ing.

  Various proposals have been made to make pouring easier by devising various shapes of the spout and attached members. Attached with a film or aluminum foil at the opening, sealed and opened with a straw or other tip, and a spout member called a spout is attached to facilitate the dispensing of the contents. Furthermore, the tip of which can be sealed with a screw-type or hinge-type lid member is known and distributed in the market.

  For example, Patent Document 1 discloses a paper container having a gable top-type top surface portion in a rectangular tube-shaped body portion, and makes it possible to efficiently pour out by making the shape of the opening portion a specific shape.

  Further, Patent Document 2 states that an opening device having a screw cap or the like is attached to a flat top so that a large size opening can be obtained and the contents can be easily poured out.

JP 2000-25748 A JP 2014-133598 A

  However, the gable-top type paper container described in Patent Document 1 is inclined at the top, so that it is difficult to stack the paper containers in the vertical direction, and the space efficiency during storage and transportation is poor. There was a problem. Moreover, in the container as described in Patent Document 2, the top surface itself is flat and can be easily poured out by the spout, but the spout provided to facilitate extraction protrudes. Also, there was a problem that it was difficult to stack in the vertical direction.

  Therefore, in the present invention, while providing a spout and a lid member for facilitating the pouring, there is no problem in stacking the paper containers in the vertical direction, and the space efficiency during transportation and storage is good. It is an object to provide a paper container.

In order to solve the above problems, the invention according to claim 1 of the present invention provides:
The top and bottom of the cylindrical body formed by laminating a laminate made of paper as a base, and having a seal portion that is sealed by laminating the inner surfaces of the laminate, and having a substantially rectangular top surface A brick type liquid paper container provided with a bottom surface,
With the body part adjacent to one side of the substantially rectangular top surface as a front panel, between the top surface and the front panel, two folding lines connecting two vertices shared by the top surface and the front panel A partitioned slope is formed,
One of the fold lines is convex on the top surface side, and the other is convex on the front panel side,
The amount of intrusion from the straight line connecting the two shared vertices to the top surface side of the folding line convex to the top surface side is less than or equal to one half of the distance to the seal portion on the top surface side,
The liquid paper container is characterized in that a spout member is attached to the inclined surface.

The invention according to claim 2 of the present invention is
The amount of penetration of the fold line protruding toward the front panel toward the front panel is larger than the amount of fold line protruding toward the top surface toward the top surface. This is a liquid paper container.

The invention according to claim 3 of the present invention is
3. The liquid paper container according to claim 1, wherein an upper end of the spout member has a height equal to or less than that of the top surface.

The invention according to claim 4 of the present invention is
Between the bottom surface and the front panel, a slope defined by two fold lines connecting two vertices shared by the bottom surface and the front panel is formed,
4. The liquid paper container according to claim 1, wherein one of the folding lines is convex or linear on the bottom surface side, and the other is convex on the front panel side. 5.

  According to the invention described in claim 1 of the present invention, it is a brick-type liquid paper container, and since the content outlet member is provided obliquely upward on the slope adjacent to the top surface, the content can be easily poured out. And, when the liquid paper containers are stacked vertically by securing the flat part of the top surface by preventing the folding line on the top surface side from deeply entering the top surface side among the folding lines that divide the slope A liquid that can stably stack the horizontal bottom on the horizontal top surface, and that the slope of the slope is appropriate and the spout member attached to the slope does not interfere with the stacking of the liquid paper containers A paper container can be provided.

  According to the second aspect of the present invention, the inclination of the inclined surface is closer to vertical than 45 °, the content can be more easily poured out, and the spout member interferes with the stacked liquid paper containers. Thus, the possibility of unstable stacking can be further reduced.

  According to the invention described in claim 3, it is possible to provide a liquid paper container in which the spout member does not interfere with the liquid paper container stacked thereon and the stacking does not become unstable.

  Further, according to the invention described in claim 4, even when the top surface sinks due to the weight of the container placed on the top, for example, when stacked in multiple stages, the top of the spout member of the lower liquid paper container and the top The possibility that the bottom surfaces of the stacked liquid paper containers interfere with each other can be reduced, and the stacking can be further stabilized.

It is an external view of 1st embodiment of the liquid paper container of this invention. It is an expanded view of the blank of embodiment shown in FIG. It is a schematic diagram of the state which accumulated the liquid paper container of this invention. It is an external view of 2nd embodiment of the liquid paper container of this invention. It is an expanded view of the blank of embodiment shown in FIG. It is an external view of 3rd embodiment of the liquid paper container of this invention. It is an expanded view of the blank of embodiment shown in FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiments described below. In the following description, the same members and the like are denoted by the same reference numerals and description thereof may be omitted.

  FIG. 1 is an external view of a first embodiment of the liquid paper container of the present invention, (a) front view, (b) top view, (c) bottom view, (d) side view, (e) It is a rear view. FIG. 2 is a developed view of the blank of the embodiment shown in FIG. The liquid paper container 1 of the present invention is provided with a horizontal and substantially rectangular top surface 15 and bottom surface 16 on the top and bottom of a cylindrical body 10 formed by laminating a paper-based laminate at a laminating portion 19. Brick type container. The body part 10 is constituted by a front panel 11, a right side panel 12, a back panel 13, and a left side panel 14 which are continuously formed in a cylindrical shape. The back panel 13 has a seam 28 when the laminate is bonded in a cylindrical shape. In addition, it is arbitrary in which panel a joint is provided. Since there is no crease between the above panels, each panel is connected with a smooth curved surface, but due to the effect of being connected to the substantially rectangular top surface 15 and bottom surface 16, the body 10 has a cross-section. It is a rounded rectangle.

  The top surface 15 is flatly crushed in the front panel-rear panel direction (hereinafter referred to as the front-rear direction) above the body portion 10 to seal the inner surfaces of the laminate with the seal portion 17 at the edge portion. Then, it is crushed in the vertical direction, and the lower part of the seal part 17 is pushed in the front-rear direction to form a horizontal and flat surface. The seal part 17 is tilted to the back panel 13 side, and a portion 18 projecting in a triangular shape to the side is formed. It is formed by folding downward along the right side panel 12 and the left side panel 14 and bonding. The bottom surface 16 is formed in the same manner. However, in a typical brick-type container, the portion protruding in a triangular shape on the side of the bottom surface is folded back and bonded to the center side to form the bottom surface 16.

  Between the front panel 11 and the top surface 15, a slope 26 defined by two fold lines 21 and 22 connecting two vertices p <b> 1 and p <b> 2 shared by the top surface 15 and the front panel 11 is formed. The fold line 21 is convex toward the front panel 11 and is a curve in this embodiment. Further, the fold line 22 is convex toward the top surface 15 and is also a curved line. A slope 26 is formed by being divided into two folding lines 21 and 22. Since the slope 26 is a curved surface that is slightly depressed due to the curved section, the distance between the two apexes p1 and p2 shared by the top surface 15 and the front panel 11 is the same as that of the blank 2 in FIG. The liquid paper container 1 is slightly narrower than the state, and the front panel 11 has a curved surface protruding forward along the curve of the fold line 21.

  A spout member 20 is attached to the slope 26. For the spout member 20, a known member may be applied without particular limitation. For example, a spout serving as a spout is attached to the inclined surface 26, and a lid member that seals the spout can be opened and closed. It can be installed by a formula. By being attached to the slope 26, the spout is directed obliquely upward, and the contents can be easily poured out. In the state of the blank 2, the part to which the spout member 20 is attached is an opening 25.

In addition, the distance from the straight line connecting the two apexes p1 and p2 in the blank state to the tip of the convex part of the fold line that defines the slope is referred to as an intrusion amount, resulting in a convex curve on the top surface 15 side. As shown in FIG. 2, the amount c of the folding line 22 entering the top surface is defined as a distance from the straight line connecting the two vertices p1 and p2 to the seal portion 17, and c is a half of d. Make sure that: Thereby, since the slope 26 does not enter the top surface 15 too much, the flat top surface 1
Even if 5 is not too narrow and the container is tilted due to shaking, the vertical line that passes through the center of gravity of the container and goes to the top and bottom surfaces is unlikely to come off the top and bottom surfaces. Further, the stacking of containers can be performed stably, and the inclined surface 26 does not become excessively upward, so that the upward protrusion of the spout member 20 can be suppressed and the stacking is not hindered.

  Further, at this time, if the amount of the folding line 21 protruding toward the front panel 11 is larger than the amount of the folding line 22 entering the top surface, the angle of the inclined surface 26 with respect to the top surface 15 can be made larger than 45 °. Therefore, it is preferable that the pouring becomes easier and the possibility that the pouring member 20 protrudes above the top surface 15 can be further reduced.

  Also, if the size and shape of the spout member 20 is such that the upper end of the spout member 20 has a height equal to or less than that of the top surface 15, the spout member 20 will not protrude beyond the top surface 15 when stacked. Can be performed more stably.

  Similar to the front panel 11 side, the back panel 13 side also has a slope 27 defined by two curved fold lines, a fold line 23 convex to the top surface side and a fold line 24 convex to the back panel side. It may be provided. When the inclined surface 27 is provided on the back panel 13 side, the back panel 13 also has a slightly narrowed shape and has a curved surface that protrudes slightly to the rear, and has a shape corresponding to the front panel and looks good. The widths on the panel side are the same, and it is more preferable because they can be easily aligned during storage.

  FIG. 3 schematically shows a state in which the liquid paper containers of this embodiment are stacked. Since the liquid paper containers 1 and 1 'have both the top surface 15 and the bottom surface 16 horizontal and flat, and the amount of the folding line 22 entering the top surface 15 is small, they can be easily and stably stacked. At this time, although the spout member 20 is provided and protrudes from the container, the spout member 20 of the lower liquid paper container 1 ′ is stacked with the upper liquid paper container 1 because it is provided on the slope 26. Sometimes it does not get in the way and can be stacked stably. Further, the liquid paper containers 1 and 1 ′ have a rounded rectangular cross section of the body portion 10 as described above, and when the contents are filled, there is an influence of the weight of the liquid paper containers 1 and 1 ′. As shown in FIG.

  FIG. 4 is an external view of a second embodiment of the liquid paper container of the present invention. FIG. 5 is a development view of the blank 4 of the embodiment shown in FIG. In the liquid paper container 3 of the present embodiment, a fold line 32 that protrudes toward the top surface 15 and a fold line that protrudes toward the front panel 11 define a slope 33 provided between the top surface 15 and the front panel 11. 31 is a straight polygonal line, and therefore the slope 33 is hexagonal. Moreover, when it is set as the shape of a container, on the inclined surface 33, the light broken line 34 will be made, and it will become a recessed surface, and the spout member 20 is attached.

  Also in the present embodiment, the amount of penetration e into the top surface side of the folding line 32 that is a convex folding line on the top surface 15 side among the folding lines that define the slope 33 is 2 as shown in FIG. The distance from the straight line connecting the two vertices p1 and p2 to the seal portion 17 is f, and e is set to be less than or equal to half of f. As a result, the inclined surface 33 does not enter the top surface as in the above-described embodiment, so that the flat top surface 15 does not become too narrow and the stacking of the containers can be performed stably, and the inclined surface 33 does not become too upward. Moreover, the upward protrusion of the spout member 20 can be suppressed, and there is no problem in stacking.

FIG. 6 is an external view of a third embodiment of the liquid paper container of the present invention. FIG. 7 is a development view of the blank 6 of the embodiment shown in FIG. In the liquid paper container 5 of the present embodiment, two fold lines connecting the two apexes p3 and p4 shared by the bottom surface 16 and the front panel 11 between the bottom surface 16 and the front panel 11, that is, a linear fold. An inclined surface 51 defined by a convex fold line 50 is provided on the line 52 and the front panel 11 side. Similarly, an inclined surface 51 is provided between the bottom panel and the back panel 13, the right side panel 12, and the left side panel 14. By providing the inclined surface 51, there is less possibility of interference with the spout member 20 of the lower container when stacked, for example, the top surface of the lower container is slightly sunk due to the weight when stacked. Even in this case, interference with the spout member 20 hardly occurs and stacking can be performed stably.

  Also in the present embodiment, the amount g of the fold line 22 that is a fold line convex toward the top surface 15 among the fold lines that define the slope 26 is 2 as shown in FIG. The distance from the straight line connecting the two apexes p1 and p2 to the seal portion 17 is h, and g is set to be less than or equal to half of h. As a result, the inclined surface 26 does not enter the top surface as in the above-described embodiment, so that the flat top surface 15 does not become too narrow and the containers can be stably stacked, and the inclined surface 26 does not become too upward. Further, the upward protrusion of the spout member 20 can be suppressed, and there is no problem in stacking.

  The laminate using paper as a base material used in the liquid paper container of the present invention may be a composite sheet made of a thermoplastic resin that can be heat-sealed with the inner layer and the outer layer as the base material, and more specifically, Various constituent materials can be used depending on the contents to be accommodated. For example, [container outer side] polyethylene / paperboard / polyethylene terephthalate film / polyethylene [container inner side] in which an inorganic compound containing a metal oxide such as polyethylene / paperboard / polyethylene / silicon oxide or aluminum oxide is formed to a thickness of 100 to 1000 mm by vacuum deposition The paper laminated sheet which consists of these structures can be used.

  As described above, according to the liquid paper container of the present invention, the spout member is attached obliquely upward on the slope adjacent to the top surface and is easy to pour out, and has a horizontal and flat top surface and bottom surface. Therefore, it is possible to provide a liquid paper container that is easy to stack and can be stably stacked without the spout member interfering with the upper liquid paper container when the liquid paper containers are stacked.

The present invention will be described more specifically with reference to the following examples.
・ Prototype containers for each of the following examples and comparative examples, put 500 ml of water into the container, and compare the easiness of pouring and stacking by sensory evaluation with 10 test subjects. X.
-The results are summarized in Table 1.

<Example 1>
-A liquid paper container similar to that of the first embodiment was prototyped.
・ Two fold lines dividing the slope
Intrusion amount of convex folding line on the top side: 10mm
Distance from straight line connecting vertices p1 and p2 to seal part: 30mm
Intrusion amount of convex fold line on the front panel side: 27mm
It was.

<Example 2>
-A liquid paper container similar to that of the second embodiment was prototyped.
・ Two fold lines dividing the slope
Amount of fold line protruding on the top side: 13mm
Distance from straight line connecting vertices p1 and p2 to seal part: 30mm
Intrusion amount of convex folding line on the front panel side: 23mm
It was.

<Example 3>
-A liquid paper container similar to that of the third embodiment was prototyped.
・ Two fold lines dividing the slope
Intrusion amount of convex folding line on the top side: 10mm
Distance from straight line connecting vertices p1 and p2 to seal part: 30mm
Intrusion amount of convex fold line on the front panel side: 25mm
It was.

<Comparative Example 1>
It was a normal brick-type paper container with an opening serving as a spout on the top surface.

<Comparative example 2>
A normal gable top type paper container was provided with a spout member on the inclined surface of the roof.

  As can be seen from Table 1, the liquid paper container of the present invention has good stackability and ease of pouring, but the conventional brick type has good stackability but poor ease of pouring. The mold was easy to pour out but could not be stacked.

1, 3, 5 ... (invention) liquid paper containers 2, 4, 6 ... blank 10 ... body 11 ... front panel 12 ... right side panel 13 ... back panel 14 ... Left side panel 15 ... Top 16 ... Bottom 17 ... Sealing part 18 ... Overhanging part 19 ... Bonding part 20 ... Outlet member 21, 31, 50 ... Folding lines 22 and 32 convex on the front panel side ... Folding lines 23 convex on the top side ... Folding lines 24 convex on the top side ... Folding lines 25 convex on the back panel side ... Openings 26, 27, 33, 51 ... Slope 28 ... Joint 29 ... Virtual line 34 ... Fold line 52 ... Linear fold line

Claims (4)

The top and bottom of the cylindrical body formed by laminating a laminate made of paper as a base, and having a seal portion that is sealed by laminating the inner surfaces of the laminate, and having a substantially rectangular top surface A brick type liquid paper container provided with a bottom surface,
With the body part adjacent to one side of the substantially rectangular top surface as a front panel, between the top surface and the front panel, two folding lines connecting two vertices shared by the top surface and the front panel A partitioned slope is formed,
One of the fold lines is convex on the top surface side, and the other is convex on the front panel side,
The amount of intrusion from the straight line connecting the two shared vertices to the top surface side of the folding line convex to the top surface side is less than or equal to one half of the distance to the seal portion on the top surface side,
A liquid paper container, wherein a spout member is attached to the slope.   The amount of penetration of the fold line protruding toward the front panel toward the front panel is larger than the amount of fold line protruding toward the top surface toward the top surface. Liquid paper container.   The liquid paper container according to claim 1, wherein an upper end of the spout member has a height equal to or lower than the top surface. Between the bottom surface and the front panel, a slope defined by two fold lines connecting two vertices shared by the bottom surface and the front panel is formed,
4. The liquid paper container according to claim 1, wherein one of the folding lines is convex or linear on the bottom surface side, and the other is convex on the front panel side. 5.

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