JP2010006459A - Paper container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper container capable of allowing a top seal part to be easily picked up without impairing the easily unsealing of the top seal part. <P>SOLUTION: In the paper container, a pair of gable roof forming panels 13 and 14 having outer top seal panels 17 and 18 and opposite to each other, and gable wall forming panels 21 having inner top seal panels and opposite to each other with any one thereof forming a spout are continuously provided at upper ends of barrel portion panels 4 and 5; the gable wall forming panels 21 are folded between the gable roof forming panels 13 and 14; and the outer top seal panels 17 and 18 and the inner top seal panels are heated and sealed at the predetermined positions. The seal width of a top seal part 30 formed by heating the outer top seal panels 17 and 18 and the inner top seal panels at the predetermined position is increased downward on the non-unsealing side B than the unsealing side A forming the spout. A top horizontal folding line 11 of the boundary between the gable roof forming panel 13 and the barrel portion panel 4 is inclined downward from the unsealing side A to the non-unsealing side B. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a paper container having a gable roof-type top that contains beverage liquids such as milk and juice.

  Conventionally, as a beverage paper container represented by a milk carton, it is made of a paperboard material in which thermoplastic resins are laminated on the front and back surfaces, and it is provided with four torso panels. A cylindrical body is formed, and at the upper end of the body panel, a pair of gable roof forming panels having an outer top seal panel at the top and facing each other, and an inner top seal panel at the top and facing each other. A pair of end wall forming panels that are opened as either spouts are continuously provided, and the pair of end wall forming panels are folded between the pair of gable roof forming panels, and each top seal panel is in a predetermined state. A gable roof type paper container (gable top type) in which a top portion is formed by being heated and sealed and sealed at a position is widely used (for example, see Patent Document 1).

In such a gable roof-type paper container, the outer top seal panel on the side of the gable wall forming panel serving as a spout when the top seal portion formed by sealing each of the top seal panels is wide, and When peeling off the heat-sealed facing surfaces of the inner top seal panel, a strong force is required and it becomes difficult to open the seal. As one means for facilitating the opening, the seal width of the top seal portion is sealed. It has been performed to form a narrow width as long as the thickness is not impaired.
JP-A-5-162784

  As described above, in the conventional gable roof type paper container, in order to facilitate the opening of the top seal portion, the seal width of the top seal portion is narrow, and there is not at least a width that allows the top seal portion to be picked. For this reason, for example, when trying to take out one of the paper containers lined up in a refrigerator or shelf, it is difficult to pick up the top seal part, and even if you try to grab the paper container and take it out, the adjacent paper I often experience that it is difficult for my fingers to enter between the body of the container and it is difficult to remove it.

  An object of the present invention is to provide a paper container in which the top seal portion can be easily picked without impairing easy opening of the top seal portion.

  In order to achieve the above object, the invention described in claim 1 is made of a paperboard material in which a thermoplastic resin is laminated on the front and back surfaces, and includes four body panels, the edges of which are joined by vertical seal panels. A rectangular tubular body is formed, and a pair of gable roof forming panels having an outer top seal panel at the top and facing each other at the upper end of the body panel, and an inner top seal panel at the top and facing each other. A pair of gable wall forming panels that are opened as a spout, and 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 side In a gable roof type paper container in which a top is formed by heating and sealing and sealing a top seal panel in a predetermined position, the outer top seal panel and the inner top The seal panel is heated and sealed at a predetermined position, and the seal width of the top seal portion is wider toward the lower side on the non-opening side than the opening side serving as the spout, and the pair of gable roofs The top horizontal fold line at the boundary between the forming panel and the body panel is inclined downward from the opening side toward the non-opening side.

  According to a second aspect of the present invention, the seal lateral fold line at the boundary between the outer top seal panel and the pair of gable roof forming panels that defines the seal width of the top seal portion according to the first aspect is from the opening side. It has a linear shape that inclines downward toward the unopened side, and the top horizontal fold line at the boundary between the pair of gable roof forming panels and the trunk panel is a linear shape that inclines substantially parallel to the seal horizontal fold line. It is characterized by becoming.

  According to a third aspect of the present invention, the seal horizontal fold line at the boundary between the outer top seal panel and the pair of gable roof forming panels that defines the seal width of the top seal portion according to the first aspect is from the opening side. It is a straight line extending horizontally to a substantially central position and inclined downward from the position toward the non-opening side, and the top horizontal fold line at the boundary between the pair of gable roof forming panels and the trunk panel is: The seal transverse fold line has a straight line shape substantially parallel to a line connecting the end portion on the unsealing side to the end portion on the non-opening side.

  According to a fourth aspect of the present invention, the seal horizontal fold line at the boundary between the outer top seal panel and the pair of gable roof forming panels that defines the seal width of the top seal portion according to the first aspect is from the opening side. It has an upward curved shape that is inclined downward toward the non-opening side, and the top horizontal fold line at the boundary between the pair of gable roof forming panels and the trunk panel is inclined upward substantially parallel to the seal horizontal fold line It is characterized by a curved shape.

  According to the paper container of claim 1, the seal width of the top seal portion formed by heating and sealing the outer top seal panel and the inner top seal panel at a predetermined position is smaller than the opening side serving as the spout. Since the non-opening side becomes wider toward the bottom, while maintaining the narrow seal width to facilitate the opening of the top seal part on the opening side serving as the spout, the seal width is wide and easy on the non-opening side For example, when one of the paper containers arranged on a refrigerator or a shelf is to be taken out, the top seal portion can be picked up and taken out easily. Further, since the seal width is wide on the non-opening side of the top seal portion, the strength is increased, and drilling can be performed as necessary.

  Further, the top side fold line at the boundary between the pair of gable roof forming panels and the body panel is opened according to the seal side fold line at the boundary between the outer top seal panel and the pair of gable roof forming panels that defines the seal width of the top seal part. Since the area of the gable roof forming panel can be increased, the printing area is large, and it can be placed vertically (vertically) or horizontally. However, the visibility of the printed display part in the gable roof forming panel can be effectively improved.

  In addition, the shape of the top portion is such that the seal width of the top seal portion is constant, and the top horizontal folding line at the boundary between the pair of gable roof forming panels and the trunk panel is the boundary between the outer top seal panel and the pair of gable roof forming panels. Compared with the top of a conventional paper container having a structure parallel to the seal transverse fold line, it can withstand a longitudinal load.

  According to the paper container of the second aspect, the seal lateral fold line at the boundary between the outer top seal panel and the pair of gable roof forming panels that defines the seal width of the top seal portion is the opening side. The top horizontal fold line at the boundary between the pair of gable roof forming panels and the body panel is a straight line inclined substantially parallel to the seal horizontal fold line. Therefore, the load capacity in the vertical direction at the top is improved.

  According to the paper container of Claim 3, the seal horizontal fold line at the boundary between the outer top seal panel and the pair of gable roof forming panels that defines the seal width of the top seal portion according to Claim 1 is from the opening side. Since it is a straight line that extends horizontally to a substantially central position and slopes downward from the position toward the non-opening side, the seal width of the top seal portion is the same width from the opening side to the substantially central position, and more A stable sealing state can be obtained.

  According to the paper container of claim 4, the seal horizontal fold line at the boundary between the outer top seal panel and the pair of gable roof forming panels that defines the seal width of the top seal portion according to claim 1 is from the opening side. Since it has an upward curved shape that is inclined downward toward the non-opening side, the folding stress of the wife wall forming panel received when the pair of wife wall forming panels are folded between the pair of gable roof forming panels is curved. It is reduced by the horizontal seal folding line, and a more stable seal state is obtained.

In addition, the top horizontal fold line at the boundary between the pair of gable roof forming panels and the body panel is an upward curve inclined substantially parallel to the seal horizontal fold line, so that the outer top on the side of the gable wall forming panel on the unsealing side When holding and holding the body part connected to the gable roof forming panel of the paper container which is opened by peeling off the heat-sealed facing surfaces of the seal panel and the inner top seal panel, the upward curve of the boundary of the body panel Due to the shape of the top horizontal folding line, the body panel is deformed so as to have a curved surface on the inside, and as a result, the corner of the body on the non-opening side is protruded by that amount. Can be easily caught by the finger that grabs the torso.

  Hereinafter, the best mode for carrying out the paper container according to the present invention will be described in detail with reference to the embodiments shown in the drawings.

  1 to 3 show a first embodiment of a paper container according to the present invention, FIG. 1 is a perspective view showing the paper container of this embodiment, FIG. 2 is a side view of the paper container shown in FIG. FIG. 3 is a development view showing the carton blank before assembly processing of the paper container shown in FIG.

  The paper container of this example is made of a paperboard material in which thermoplastic resins are laminated on the front and back surfaces, and includes four body panels 4, 5, 6, and 7 via body vertical folding lines 1, 2, 3, An edge portion is joined to a panel 7 by a vertical seal panel 9 provided continuously through a seal vertical folding line 8 to form a square cylindrical body portion 10.

  A pair of gable roof forming panels 13, 14 facing each other via the top horizontal folding lines 11, 12 are connected to the upper ends of the opposing body panel 4, 6 of the cylindrical body 10. Outer top seal panels 17 and 18 are connected to upper portions of the pair of gable roof forming panels 13 and 14 via seal horizontal folding lines 15 and 16. In addition, a pair of end wall forming panels which are opened at the upper ends of the other opposite body panel 5 and 7 of the tubular body 10 and facing each other via the top horizontal folding lines 19 and 20 are opened as spouts. 21 and 22 are connected. Inner top seal panels 25, 26 are connected to upper portions of the pair of end wall forming panels 21, 22 via seal horizontal folding lines 23, 24.

  The pair of end wall forming panels 21 and 22 includes seal lateral fold lines 23 and 24 at the boundaries between the top horizontal fold lines 19 and 20 at the boundary with the body panels 5 and 7 and the inner top seal panels 25 and 26. Folding lines 27 and 28 connected to the center of the cable are provided, and a pair of gable wall forming panels 21 and 22 are folded at the folding lines 27 and 28 and are folded between the pair of gable roof forming panels 13 and 14. The top seal panels 17, 18 and the inner top seal panels 25, 26 are heated and sealed at predetermined positions to form a gable roof type top 29.

  In the top seal portion 30 formed by sealing the outer top seal panels 17 and 18 and the inner top seal panels 25 and 26, the seal width (vertical direction) is relative to the unsealing side A serving as a spout. The non-opening side B becomes wider toward the lower side. More specifically, the seal width on the unsealing side A, which serves as the spout for the top seal portion 30, is narrow so long as the seal is not impaired, and the non-opening side B is at least picked downward. It is wide enough.

  In this example, the seal horizontal folding lines 15 and 16 at the boundary between the outer top seal panels 17 and 18 and the pair of gable roof forming panels 13 and 14 that define the seal width of the top seal portion 30 are from the unsealed side B to the unopened side B. It is a straight line inclined downward. Further, a hanging hole 31 is formed in the wide surface on the non-opening side B of the top seal portion 30.

  Further, in the top horizontal folding lines 11 and 12 at the boundary between the pair of gable roof forming panels 13 and 14 and the body panels 4 and 6, a pair with the outer top seal panels 17 and 18 that define the seal width of the top seal portion 30. Are inclined downward from the unsealing side A toward the non-unsealing side B according to the seal horizontal folding lines 15 and 16 at the boundary with the gable roof forming panels 13 and 14.

  In this example, the top horizontal fold lines 11 and 12 at the boundary between the pair of gable roof forming panels 13 and 14 and the trunk panels 4 and 6 are linearly inclined in parallel with the seal horizontal fold lines 15 and 16.

  Moreover, in this example, the folding lines 27 and 28 provided in the pair of end wall forming panels 21 and 22 have a downward curved shape toward the top horizontal folding lines 19 and 20.

  A pair of outer panels 34 and 35 facing each other via bottom horizontal folding lines 32 and 33 are connected to the lower ends of the opposing body panel 4 and 6 of the cylindrical body 10, so that the cylindrical body 10. A pair of inner panels 38, 39 are connected to the lower ends of the other opposing body panel 5, 7 via bottom horizontal folding lines 36, 37, and a pair of inner panels 38, 35 are paired between the pair of outer panels 34, 35. Panels 38 and 39 are folded, heated, sealed and sealed to form bottom 40.

  According to the paper container of the first embodiment configured as described above, the top seal portion 30 formed by heating and sealing the outer top seal panels 17 and 18 and the inner top seal panels 25 and 26 at predetermined positions. Since the non-opening side B becomes wider toward the lower side with respect to the opening side A serving as the spout, the opening width of the top seal portion 30 is made easier on the opening side A serving as the spout. While maintaining a narrow seal width, the non-open side B has a wide seal width and can be easily picked.

  Also, the top horizontal folding lines 11 and 12 at the boundary between the pair of gable roof forming panels 13 and 14 and the body panels 4 and 6 define the outer top seal panels 17 and 18 that define the seal width of the top seal portion 30 and the pair of gable roofs. Since it is inclined downward from the unsealing side A toward the non-opening side B according to the seal horizontal fold lines 15 and 16 at the boundary with the forming panels 13 and 14, the area of the gable roof forming panels 13 and 14 can be increased. Therefore, the printing area is large, and the visibility of the printed display area on the gable roof forming panels 13 and 14 is good regardless of whether they are in the inverted display or the inverted display.

  Further, the top 29 of this example having the above-described shape has a constant seal width of the top seal portion in the conventional paper container, and the top horizontal folding line at the boundary between the pair of gable roof forming panels and the trunk panel is the outer top. Compared with the shape of the top having a structure parallel to the seal horizontal folding line at the boundary between the seal panel and the pair of gable roof forming panels, it can withstand a load in the vertical direction.

  In particular, in this example, the seal horizontal fold lines 15 and 16 at the boundary between the outer top seal panels 17 and 18 that define the seal width of the top seal portion 30 and the pair of gable roof forming panels 13 and 14 are not opened from the opening side A. The top horizontal fold lines 11, 12 at the boundary between the pair of gable roof forming panels 13, 14 and the body panels 4, 6 are the seal horizontal fold lines 15, Therefore, a strong strength against the longitudinal load at the top 29 is obtained.

  Moreover, in this example, since the folding lines 27 and 28 provided in the pair of end wall forming panels 21 and 22 are downwardly curved toward the top horizontal folding lines 19 and 20, the pair of gable roof forming panels 13 , 14, both inner sides of the folded portions of the end wall forming panels 21 and 22 are convex curved surfaces, so that they can be easily hooked with fingers when opened.

  4 to 6 show a second embodiment of the paper container according to the present invention, FIG. 4 is a perspective view showing the paper container of the present embodiment, FIG. 5 is a side view of the paper container shown in FIG. FIG. 6 is a development view showing the carton blank before assembling the paper container shown in FIG.

  The paper container of this example is not different from the first example in its basic configuration, and the same components as those in the first example will be described with the same reference numerals.

  In this example, the outer top seal panels 17 and 18 and the inner top seal panels 25 and 26 are sealed to each other, and the outer top seal panels 17 and 18 that define the seal width of the top seal portion 30 and a pair of gable roof forming panels. The seal horizontal fold lines 15 and 16 at the boundary with 13 and 14 are linearly extended from the opening side A to the substantially central position and inclined downward from the position toward the non-opening side B. Moreover, the top horizontal fold lines 11 and 12 at the boundary between the pair of gable roof forming panels 13 and 14 and the trunk panels 4 and 6 are end portions on the unsealed side B from the end portions on the unsealed side A of the seal horizontal fold lines 15 and 16. It is a straight line generally parallel to the line connecting the two.

  Since the other configuration is the same as that of the first embodiment, the description of the first embodiment is cited and the description thereof is omitted.

  According to the paper container of the second embodiment configured as described above, the seal width of the top seal portion 30 is the same from the opening side A to the substantially central position, and a more stable sealing state is obtained.

  7 to 9 show a third embodiment of the paper container according to the present invention, FIG. 7 is a perspective view showing the paper container of the present embodiment, FIG. 8 is a side view of the paper container shown in FIG. FIG. 9 is a development view showing the carton blank before assembly processing of the paper container shown in FIG.

  The paper container of this example is not different from the first example in its basic configuration, and the same components as those in the first example will be described with the same reference numerals.

  In this example, the outer top seal panels 17 and 18 and the inner top seal panels 25 and 26 are heated and sealed at predetermined positions to form a pair with the outer top seal panels 17 and 18 that define the seal width of the top seal portion 30 formed. The horizontal folding lines 15 and 16 at the boundary with the gable roof forming panels 13 and 14 have an upward curve shape (substantially arc shape) inclined downward from the opening side A toward the non-opening side B. Moreover, the top horizontal fold lines 11 and 12 at the boundary between the pair of gable roof forming panels 13 and 14 and the trunk panels 4 and 6 have an upward curved shape inclined substantially parallel to the seal horizontal fold lines 15 and 16.

  Since the other configuration is the same as that of the first embodiment, the description of the first embodiment is cited and the description thereof is omitted.

  According to the paper container of the third embodiment configured as described above, the seal beside the boundary between the outer top seal panels 17 and 18 that define the seal width of the top seal portion 30 and the pair of gable roof forming panels 13 and 14. Since the fold lines 15 and 16 have an upward curved shape inclined downward from the opening side A toward the non-opening side B, the pair of gable wall forming panels 21 and 14 between the pair of gable roof forming panels 13 and 14 The folding stress of the end wall forming panels 21 and 22 that is received when the 22 is folded is reduced by the curved seal horizontal folding lines 15 and 16, and a more stable sealing state is obtained.

  Moreover, since the top horizontal fold lines 11 and 12 at the boundary between the pair of gable roof forming panels 13 and 14 and the trunk panels 4 and 6 have an upward curved shape inclined substantially parallel to the seal horizontal fold lines 15 and 16, A pair of gable roof forming panels of a paper container opened by peeling off the heat-sealed opposing surfaces of the outer top seal panels 17 and 18 and the inner top seal panels 25 and 26 on the side of the end wall forming panel 21 on the opening side A When the tubular body 10 is gripped and held by placing the fingers on the body panels 4 and 6 connected to the side walls 13 and 14, the top lateral folding lines 11 and 12 are curved upward. As a result, the corner portion of the trunk portion on the non-opening side B is protruded by that amount, and the corner portion is easily caught by the finger holding the trunk portion. Other effects are the same as in the first embodiment.

It is the perspective view which showed 1st Example of the paper container which concerns on this invention. It is a side view of the paper container shown in FIG. It is an expanded view which shows the carton blank before the assembly process of the paper container shown in FIG. It is the perspective view which showed 2nd Example of the paper container which concerns on this invention. It is a side view of the paper container shown in FIG. It is an expanded view which shows the carton blank before the assembly process of the paper container shown in FIG. It is the perspective view which showed 3rd Example of the paper container which concerns on this invention. It is a side view of the paper container shown in FIG. It is an expanded view which shows the carton blank before the assembly process of the paper container shown in FIG.

Explanation of symbols

1, 2, 3 Body vertical fold line 4, 5, 6, 7 Body panel 8 Seal vertical fold line 9 Vertical seal panel 10 Cylindrical body 11, 12 Top horizontal fold line 13, 14 Gable roof forming panel 15, 16 Seal Horizontal fold line 17, 18 Outer top seal panel 19, 20 Top horizontal fold line 21, 22 Tail wall forming panel 23, 34 Seal horizontal fold line 25, 26 Inner top seal panel 27, 28 Folding line 29 Top 30 Top seal part 31 Hole 32, 33 Bottom horizontal fold line 34, 35 Outside panel 36, 37 Bottom side fold line 38, 39 Inside panel 40 Bottom

Claims (4)

It is made of a paperboard material with thermoplastic resin laminated on the front and back surfaces, and it has four barrel panels. The edges are joined by vertical seal panels to form a square cylindrical barrel, and the upper end of the barrel panel A pair of gable roof forming panels having an outer top seal panel on the top and facing each other, and a pair of gable wall forming panels having an inner top seal panel on the top and facing each other and opened as a spout 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 and sealed at predetermined positions. In the gable roof type paper container whose top is formed by
The seal width of the top seal portion formed by heating and sealing the outer top seal panel and the inner top seal panel at a predetermined position is wider toward the lower side of the unsealed side than the opened side serving as a spout. And a top horizontal fold line at the boundary between the pair of gable roof forming panels and the trunk panel is inclined downward from the opening side toward the non-opening side.   The seal horizontal fold line at the boundary between the outer top seal panel and the pair of gable roof forming panels that defines the seal width of the top seal portion is linearly inclined downward from the unsealed side toward the non-opened side. 2. The paper according to claim 1, wherein a top horizontal fold line at a boundary between the pair of gable roof forming panels and the body panel is a straight line inclined substantially in parallel with the seal horizontal fold line. container.   The seal horizontal fold line at the boundary between the outer top seal panel and the pair of gable roof forming panels defining the seal width of the top seal portion extends horizontally from the opening side to the substantially central position, and from the position to the non-opening side The top horizontal fold line at the boundary between the pair of gable roof forming panels and the body panel is an end on the non-opening side from the opening side end of the seal horizontal fold line. The paper container according to claim 1, wherein the paper container has a linear shape that is substantially parallel to a line connecting the portions.   The seal horizontal fold line at the boundary between the outer top seal panel and the pair of gable roof forming panels that defines the seal width of the top seal portion is an upward curve that is inclined downward from the unsealed side toward the non-opened side. The top horizontal fold line at the boundary between the pair of gable roof forming panels and the body panel is an upward curved line inclined substantially in parallel with the seal horizontal fold line. Paper container.

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