JP2023161249A - Gable roof-type paper container - Google Patents

Abstract

To provide a gable roof-type paper container in which a height of a top part is lowered and a space can be save, and which can be easily opened and can be kept in an opening shape.SOLUTION: In a gable roof-type paper container 1, in which is formed an auxiliary folding line 44 in a downward circular arc shape in which end parts 42 and 43 are arranged to connect intersections 40 and 41 between end parts of trunk part vertical folding lines 4 and 5 and an end part of top part transverse folding line 26 or the vicinities of the intersections to a trunk part panel 8 to be opened linked to a gable wall formation panel 24 to be opened, through the top part transverse folding line 26, an angle θ formed by sides 5 of gable roof formation panels 16 and 17 having top parts 38 formed therein and upper sides 46 of trunk part panels 6 and 7 linked to the gable wall formation panels 23 and 24 to form a trunk part 13 is set to be 25 degrees or less, a breadth W of the trunk part 13 is set to be 60 mm or less, and a length L1 by which a lowest point P of the auxiliary folding line 44 is vertically joined to an upper side 46 of the trunk part panel 8 linked with the gable wall formation panel 24 is equal to 15%-25% of a length L2 of the upper side 46 of the trunk part panel 8.SELECTED DRAWING: Figure 3

Description

The present invention relates to a gable-roof paper container containing liquid contents.

Conventionally, paper containers used to store liquid contents such as milk or juice are made of paperboard material with thermoplastic resin laminated on the front and back sides, and have four body panels, with the edges joined by a vertical seal panel. A square cylindrical body is formed, and at the upper end of the body panel are a pair of gable roof forming panels facing each other having an outer top seal panel at the top and an inner top seal panel at the top facing each other. A pair of gable wall forming panels, one of which serves as a spout and is unsealed, are arranged in series, and a pair of gable wall forming panels are folded between a pair of gable roof forming panels to form an outer top seal panel and an inner top seal panel. Gable-roof paper containers are widely used, in which the top is formed by heating and sealing at a predetermined location.

To open such a gable-roof paper container, insert your finger into the space that opens between the pair of gable-roof forming panels, the body panel, and the gable-forming panel, and place your finger on the gable-forming panel. The heat-sealed opposing surfaces of the outer top seal panel and the inner top seal panel on the unsealing side are peeled off by spreading them from side to side, and the gable wall formation folded between the pair of gable roof forming panels is removed. This is done by pulling out the panel, folding it back outward from the top transverse fold line at the boundary with the body panel that is connected to the top transverse fold line, and opening the spout. However, since the space formed between the body panel and the end wall forming panel is not wide, the area on which the end wall forming panel can be touched is small and difficult to open.

In recent years, paper containers that solve these problems have been developed using a top transverse fold line located at the boundary with the end wall forming panel on the end wall forming panel that is pulled out when the paper container is opened, and on the body panel that connects with the end wall forming panel. A gable-roof type paper container is known in which an auxiliary fold line is provided near the top transverse fold line from one end of the top transverse fold line to the other end and descends toward the center of the body panel (for example, as disclosed in the patent (See Reference 1).

According to a gable roof type paper container provided with such an auxiliary fold line, when the top corner of the body formed by the top transverse fold line is pushed into the inside of the container, the top corner is folded in a mountain from the auxiliary fold line. is curved inward of the container, and the upper part sandwiched between the top transverse fold line of the body panel and the opening auxiliary ruled line is recessed inside the container. This increases the space for fingers to be placed on the end wall forming panel during opening, making it easier to open the paper container.

Japanese Patent Application Publication No. 2002-234524

With the spread of gable-roof paper containers in the market, the height of the top of the gable-roof type has been lowered for the purpose of saving space, facilitating transportation, and reducing costs by saving resources. 1, when the height of the top of the gable roof type is lowered, there is no description of the relationship between the lowered gable roof type and the auxiliary fold line where the body panel is provided, and there is no description of the relationship between the lowered gable roof type and the auxiliary fold line where the body panel is provided, The shape of the auxiliary fold line has not been elucidated.

In addition, in recent years, small gable-roof paper containers have become popular as paper containers for storing drinks in school lunches, etc., and as paper containers for storing drinks that are convenient to carry when traveling. In the case of a roof-shaped paper container, the space formed between the body panel and the end wall forming panel is narrow, making it particularly difficult to open. Patent Document 1 describes a large gable roof type paper container with a side of 70 mm to 85 mm, but there is no description about a small gable roof type paper container, and there is no description of the optimal auxiliary fold line according to the small gable roof type. The shape has also not been elucidated.

In particular, for small gable-roof paper containers that are used for school lunches, etc. or brought with you on trips, etc., pull out the gable-forming panels that are folded between the gable-roof-forming panels and move them outward from the top transverse fold line. In many cases, people drink directly from a spout that is folded back and opened, and therefore it is desirable that the end wall forming panel that has been pulled out does not return easily and maintains its open form, but Patent Document 1 does not mention anything regarding this. do not have.

In view of the above-mentioned problems, the present inventors have determined the optimal shape of the auxiliary fold line when the height of the top of the gable roof type is lowered in a small gable roof type paper container, and the shape of the optimal auxiliary fold line for opening the pouring spout. The present invention was completed by conducting repeated research on the optimal shape of the auxiliary fold line so that the gable wall forming panel pulled out from between the gable roof forming panels does not easily return and can maintain its open form. reached.

An object of the present invention is to reduce the height of the top of the gable roof type of a gable roof type paper container, thereby saving space, facilitating transportation, and reducing costs by saving resources. In addition to making it easier to open the package by recessing the opening, the gable wall forming panel pulled out from between the gable roof forming panels does not return easily and maintains its open form, so that it can be easily opened by touching it directly. To provide a gable roof type paper container which allows the contents to be easily drunk.

In order to achieve the above object, the invention according to claim 1 is made of a paperboard material with thermoplastic resin laminated on the front and back sides, and has four body panels, the edges of which are joined by a longitudinal seal panel. a square cylindrical body is formed, and at the upper end of the body panel are a pair of gable roof forming panels facing each other having an outer top seal panel at the top and an inner top seal panel at the top facing each other; A pair of gable wall-forming panels, one of which serves as a spout and is opened, are arranged in series, and the pair of gable wall-forming panels are folded between the pair of gable roof-forming panels to form an outer top seal panel and an outer top seal panel. A top part is formed by heating and sealing the inner top seal panel at a predetermined position, and a body panel on the opening side that is connected to the end wall forming panel on the opening side via the top transverse fold line. is a gable roof type paper container in which a downward arcuate auxiliary fold line is formed, the end of which connects the intersection of the end of the body vertical fold line and the end of the top horizontal fold line, or the vicinity thereof, The angle formed by the side of the gable roof forming panel that forms the top and the upper side of the trunk panel that is connected to the gable wall forming panel and forms the trunk is 25 degrees or less, and the trunk has a width of 60 mm or less, and the length that vertically connects the lowest point of the auxiliary fold line and the upper side of the body panel that connects the end wall forming panel is equal to the length of the upper side of the body panel. It is characterized by being 15% to 25%.

According to the invention as set forth in claim 1, a side edge of the gable roof forming panel forming the top portion and an upper side of the trunk panel connecting to the gable wall forming panel and forming the trunk portion are formed. Since the angle is 25 degrees or less, the height of the top of the gable roof type is low, which allows for space savings, ease of transportation, and cost reduction due to resource savings.

Since the width of the body is 60 mm or less, the space formed between the body panel and the gable wall forming panel becomes narrow in a gable-roof paper container with a low top height. However, the length that vertically connects the lowest point of the auxiliary fold line and the upper side of the body panel that connects the end wall forming panel is 15% to 25% of the length of the upper side of the body panel. Therefore, when opening the package, push the top corner of the body formed by the top transverse fold line into the inside of the gable roof type paper container, fold the body panel along the auxiliary fold line, and fold the top corner into the gable roof. By curving the roof-type paper container inward and recessing the upper part between the top transverse fold line of the body panel and the auxiliary ruled line into the inside of the gable-roof paper container, the body panel and the gable wall forming panel are formed. A wide space is formed in between, and the package can be easily opened by inserting a finger into this space.

Further, the length that vertically connects the lowest point of the auxiliary fold line and the upper side of the body panel that connects the end wall forming panel is 15% to 25% of the length of the upper side of the body panel. Therefore, when the gable wall forming panel is pulled out from between the gable roof forming panels in order to open the spout, the top corner of the body formed by the top transverse fold line curves to the outside of the gable roof paper container. , the body panel is folded in a valley from the auxiliary fold line, and the end wall forming panel that is curved and pulled out to the outside of the gable roof paper container becomes a beak-shaped spout and protrudes to the outside of the gable roof paper container. It is convenient for drinking by directly touching the spout, and the gable wall forming panel that is pulled out to form the beak-shaped spout is formed by the valley-folded auxiliary fold line in the body panel. Since the top corner of the body is curved toward the outside of the container, the gable wall-forming panel that protrudes outside the gable-roof paper container and serves as the pouring spout is prevented from returning, resulting in a beak-shaped spout. The shape of the outlet can be maintained, which makes it easy to drink the liquid contents directly.

As described above, according to the gable roof type paper container according to the present invention, the height of the top of the gable roof type is lowered, space saving, ease of transport, cost reduction due to resource saving, etc. are achieved. The top corner of the body is recessed to make opening easier, and the gable wall forming panel pulled out from between the gable roof forming panels does not easily return and can maintain its open form. A roof-shaped paper container can be obtained.

1 is a perspective view showing an example of an embodiment of a gable roof type paper container according to the present invention. FIG. 2 is a plan view showing carton blanks of the gable roof type paper container shown in FIG. 1. FIG. FIG. 2 is an explanatory diagram showing main parts of the gable roof type paper container shown in FIG. 1. FIG. FIG. 2 is an explanatory diagram showing the state of the gable roof type paper container shown in FIG. 1 before opening. FIG. 5 is an explanatory view showing the gable roof type paper container shown in FIG. 4 in a state where the auxiliary fold line is bent and the trunk is recessed. It is an explanatory view showing a state in which the gable wall forming panel is pulled out from between the gable roof forming panels, protruding to the outside of the gable roof type paper container, and the spout is opened.

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the gable roof type paper container based on this invention is demonstrated in detail with reference to drawings.
1 to 6 show an example of an embodiment of the gable roof type paper container according to the present invention, FIG. 1 is a perspective view showing the gable roof type paper container of the present example, and FIG. 2 is a perspective view of the gable roof type paper container shown in FIG. 1. 3 is an explanatory diagram showing the main parts of the gable roof type paper container shown in FIG. 1; FIG. 4 is an explanatory diagram showing the state of the gable roof type paper container shown in FIG. 1 before opening; Figure 5 is an explanatory diagram showing the gable roof type paper container shown in Figure 4, with the auxiliary fold line folded and the trunk recessed. It is an explanatory view showing the state where it was made to project outside and the spout was opened.

The gable roof type paper container 1 of this example is formed from a carton blank 2, which is a paperboard material with thermoplastic resin laminated on the front and back surfaces shown in FIG. The carton blank is provided with four body panels 6, 7, 8, 9 which are connected via body longitudinal fold lines 3, 4, 5. When the gable roof type paper container 1 is formed, the four body panels 6, 7, 8, 9 are connected to the vertical seal panel 11, which is connected to the body panel 9 via the body vertical fold line 10, and the body panel. The edges 12 of 6 are joined to form a square body 13 of the paper container.

At the upper ends of the body panels 7, 9, a pair of mutually opposing gable roof forming panels 16, 17 having outer top seal panels 14, 15 at the upper portions are connected via top transverse fold lines 18, 19. . Further, at the upper ends of the body panels 6 and 8, there is a pair of end wall forming panels 23 and 24 which have inner top seal panels 20 and 21 at the upper part and are opposed to each other and one of which serves as a spout 22 and is unsealed. They are connected via top transverse fold lines 25 and 26. In this example, the end wall forming panel 24 is used as the end wall forming panel on the opening side.

In the gable roof forming panels 16 and 17, guide fold lines 27 and 28 are formed on the gable wall forming panel 24 side on the unsealing side to guide the bending of the gable roof forming panels 16 and 17 when unsealing. The gable roof forming panel 16 also includes a first half cut 29 formed from the back side and serving as a straw insertion opening, and a second half cut 30 formed from the front side so as to surround the first half cut 29. A straw spout 31 is provided.

Folding lines 32, 33, 34, and 35 for folding the end wall forming panels 23 and 24 are formed in the end wall forming panels 23 and 24, respectively. Further, substantially triangular surface portions 36 and 37 surrounded by the folding lines 32, 33, 34, and 35 and the top transverse folding lines 25 and 26 are formed.

When forming the gable roof type paper container 1, a pair of gable wall forming panels 23, 24 are folded between a pair of gable roof forming panels 16, 17, and outer top seal panels 14, 15 and inner top seal panels 20, 21 are folded. is heated and sealed in place to form a gable-shaped top 38 as shown in FIG. The top part 38 of the formed gable roof type has an opening between the pair of gable roof forming panels 16 and 17, the body panel 8 on the opening side and the gable wall forming panel 24 on the opening side, and the gable roof type paper container 1 A space 39 is formed in which a finger is placed in order to place the finger on the end wall forming panel 24 on the opening side when the package is opened. A substantially triangular surface portion 37 formed on the end wall forming panel 24 is located on the back surface of the space 39.

In addition, the body panel 8 on the opening side, which is connected to the end wall forming panel 24 on the opening side via the top horizontal fold line 26, has the ends of the body vertical fold lines 4 and 5 on both sides and the top horizontal fold line 26. A downward arcuate auxiliary broken line 44 is formed with end parts 42 and 43 arranged so as to connect the intersection points 40 and 41 with the end parts or their vicinity.

In this example, the ends 42 and 43 of the auxiliary fold line 44 are slightly apart from the intersection points 40 and 41 between the ends of the body vertical fold lines 4 and 5 and the ends of the top horizontal fold line 26, and are located near the intersection points 40 and 41. However, the ends 42 and 43 of the auxiliary fold line 44 may be connected to the intersections 40 and 41.

The gable roof type paper container 1 formed of the carton blanks 2 configured in this way has a trunk that is connected to the side sides 45 of the gable roof forming panels 16 and 17 forming the top portion 38 and the gable wall forming panels 23 and 24. The angle θ formed with the upper side 46 of the body panels 6 and 7 forming the body portion 13 is 25 degrees or less, the width W of the body portion 13 is 60 mm or less, and the auxiliary fold line 44 formed on the body panel 8 The length L1 vertically connecting the lowest point P of the body panel 8 and the upper side 46 of the body panel 8 that connects the end wall forming panel 24 is 15% to 25% of the length L2 of the upper side 46 of the body panel 8. It has become.

The angle θ formed by the side sides 45 of the gable roof forming panels 16, 17 that formed the above-mentioned top 38 and the upper sides 46 of the body panels 6, 7, the width W of the body 13, the lowest point P of the auxiliary fold line 44, The numerical value of the length L1 vertically connecting the upper side 46 of the body panel 8 is based on the premise that the gable roof type paper container 1 is a small gable roof type paper container 1 that can be relatively easily handled by children and the elderly. The top corner 47 of the body 13 formed by the top transverse fold line 26 is shaped like a gable roof pattern when the package is opened. By pushing into the inside of the container 1 and recessing it, it can be opened easily, and furthermore, the gable wall forming panel 24 pulled out from between the gable roof forming panels 16 and 17 does not return easily and can maintain its open form. These values are obtained from tests and research conducted to satisfy these conditions, as well as evaluations through actual unpacking sensory tests.

From testing and evaluation, the reason why the angle θ formed by the side sides 45 of the gable roof forming panels 16, 17 and the upper sides 46 of the body panels 6, 7 was set to 25 degrees or less is because if the angle θ exceeds 25 degrees, the gable This is because the height of the roof-shaped top 38 cannot be said to have been significantly lowered, and it cannot be said that it has contributed to space saving, ease of transportation, cost reduction due to resource saving, etc.
It can be said that the smaller the angle θ, the more it contributes to space saving, ease of transportation, cost reduction due to resource saving, etc. However, if it is less than 10 degrees, it will be difficult to dent the top corner 47 of the body 13 when opening the package, and the dent will also occur. It is preferable that the angle is 10 degrees or more, since the space 39 into which the fingers can be inserted is narrow and does not contribute much to opening the package.

Further, the width W of the body 13 is set to 60 mm or less, which is a value evaluated as a small gable roof type paper container 1 that can be relatively easily handled by children and the elderly.

Further, the length L1 vertically connecting the lowest point P of the auxiliary fold line 44 and the upper side 46 of the body panel 8 is set to 15% to 25% of the length L2 of the upper side 46 of the body panel 8. If the length L1 is less than 15% of L2, the space 39 created when the top corner 47 of the body 13 is recessed is narrow and contributes little to opening, and if it exceeds 25%, the recess is small. After opening, the space 39 becomes too wide, and even if you try to apply upward force, the lever principle will not work and it will be difficult to open. This is because the opening may not be able to maintain its open shape.

In this example, bottom forming panels 48 and 49 are connected to the lower ends of the trunk forming panels 6 and 8, and inner panels 50 and 51 are connected to the lower ends of the trunk forming panels 7 and 9. Inner panels 50 and 51 are folded inside forming panels 48 and 49, and their contact surfaces are adhered to each other, and the bottom of body 13 is sealed to form bottom 52 of gable roof type paper container 1. . Note that the configuration of the bottom portion 52 is not limited to the configuration of this example, and other known bottom configurations in the field of gable roof type paper containers 1 can be adopted as long as the bottom portion 52 of the body portion 13 can be sealed.

According to the gable roof type paper container 1 of the present example configured as described above, the body portion is connected to the sides 45 of the gable roof forming panels 16 and 17 forming the top portion 38 and the gable wall forming panels 23 and 24. Since the angle θ formed with the upper side 46 of the body panels 6 and 7 forming the body panel 13 is less than 25 degrees, the height of the gable roof type top portion 38 is lowered, resulting in space saving, ease of transportation, It is possible to reduce costs by saving resources.

Further, since the width W of the body 13 is 55 mm or less, the space formed between the body panel 8 and the gable wall forming panel 24 in the gable roof type paper container 1 in which the gable roof top 38 is low in height. 39 is narrower, but the length L1 that vertically connects the lowest point P of the auxiliary fold line 44 formed on the body panel 8 and the upper side 46 of the body panel 8 that connects the end wall forming panel 24 is, Since it is 15% to 25% of the length L2 of the upper side 46 of the body panel 8, when opening the bag, the top corner 47 of the body 13 formed by the top transverse fold line 26 should be aligned with the top corner 47 of the gable roof type paper container 1. Push it inward and mountain-fold the body panel 8 from the auxiliary crease line 44 to curve the top corner 47 inward of the gable roof type paper container 1 so that it is sandwiched between the top transverse fold line 26 of the body panel 8 and the auxiliary ruled line 44. By recessing the upper part of the gable roof type paper container 1, a wide space 39 is formed between the body panel 8 and the gable wall forming panel 24, and the package can be easily opened by inserting a finger into this space 39. It can be carried out.

In addition, the length L1 that vertically connects the lowest point P of the auxiliary fold line 44 and the upper side 46 of the body panel 8 is 15% to 25% of the length L2 of the upper side 46 of the body panel 8. When the gable wall forming panel 24 is pulled out from between the gable roof forming panels 16 and 17 in order to open the spout 22, the top corner 47 of the body 13 formed by the top transverse fold line 26 forms a gable roof type paper container. 1, the body panel 8 is folded in a valley from the auxiliary fold line 44, and the gable wall forming panel 24, which is curved and drawn out to the outside of the gable roof type paper container 1, becomes a beak-shaped spout 22 and forms a gable. Since it protrudes to the outside of the roof-shaped paper container 1, it is convenient for drinking by directly touching the spout 22.

Furthermore, the gable wall forming panel 24 that has been pulled out to form the beak-shaped spout 22 has a top corner 47 of the body 13 that is shaped like a gable-roof paper container due to the valley-folded auxiliary fold line 44 in the body panel 8. 1, the gable wall forming panel 24, which protrudes to the outside of the gable roof type paper container 1 and forms the spout 22, is prevented from returning and maintains the shape of the beak-shaped spout 22. be able to.

1 Gable roof type paper container 2 Carton blanks 3, 4, 5 Body vertical fold lines 6, 7, 8, 9 Body panel 10 Body vertical fold lines 11 Vertical seal panel 12 Edge 13 Body 14, 15 Outside top seal panel 16, 17 Gable roof forming panel 18, 19 Top transverse fold line 20, 21 Inside top seal panel 22 Outlet 23, 24 Gable wall forming panel 25, 26 Top transverse fold line 27, 28 Guide fold line 29 First half cut 30 Second half Cut 31 Straw spout 32, 33, 34, 35 Folding fold line 36, 37 Substantially triangular surface portion 38 Top portion 39 Space 40, 41 Intersection 42, 43 End of auxiliary fold line 44 Auxiliary fold line 45 Gable roof forming panel forming the top side 46 upper side 47 of the trunk panel forming the trunk top corners 48, 49 bottom forming panels 50, 51 inner panel 52 bottom θ the side of the gable roof forming panel forming the top and the gable wall forming panel Angle W formed by the upper side of the body panels that are connected in series to form the body part Width P of the body part Lowermost point L1 of the auxiliary fold line Length L2 that vertically connects the lowest point of the auxiliary fold line and the upper side of the body panel Length of upper side of body panel

Claims (1)

It is made of paperboard material laminated with thermoplastic resin on the front and back sides, and has four body panels, the edges of which are joined by longitudinal seal panels to form a square cylindrical body, and the upper end of the body panel , a pair of gable roof forming panels having an outer top seal panel at the upper part and facing each other, and a pair of gable wall forming panels having an inner top seal panel at the upper part and facing each other, one of which serves as a spout and is opened. are arranged in series, the pair of gable wall forming panels are folded between the pair of gable roof forming panels, and the outer top seal panel and the inner top seal panel are heated and sealed at a predetermined position. , and the body panel on the opening side, which is connected to the end wall forming panel on the opening side via the top horizontal fold line, has an end portion of the body vertical fold line and an end of the top horizontal fold line. In a gable-roof type paper container in which a downward arcuate auxiliary fold line is formed, the end is arranged so as to connect the intersection point or the vicinity thereof,
The angle formed by the side of the gable roof forming panel that forms the top and the upper side of the trunk panel that is connected to the gable wall forming panel and forms the trunk is 25 degrees or less, and the trunk has a width of 60 mm or less, and the length that vertically connects the lowest point of the auxiliary fold line and the upper side of the body panel that connects the end wall forming panel is equal to the length of the upper side of the body panel. A gable-roof type paper container characterized by 15% to 25%.

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