JP4413641B2 - Blank board for paper container - Google Patents

Description

  The present invention relates to a paper container, and more particularly to a paper container that is excellent in strength and appearance design of a container body and that is easy to grip in use.

  Conventionally, cartons called gable top type (gable roof type) and flat top type have been established as simple containers for storing various liquids such as milk, fruit juice drinks, sake, etc. Recently, shampoos, rinses, detergents, etc. It is also used in non-food products. Further, the contents that can be poured are used in powdered detergents, salt, rice, etc., in powder, granular and granular solids.

  Normally, this type of carton has a rectangular tube-shaped body part, which has good alignment and excellent transportability, but on the other hand, the strength of each side of the body is weak and the body bulge phenomenon There was also a phenomenon that caused the liquid to be accidentally ejected due to external pressure by fingers. In addition, the display at the time of sale generally has only one flat design part display, and there is a disadvantage that cannot be differentiated from a general paper box display. Further, at the time of use, it is hard to hold because it is angular, and troubles such as the corner portion biting into the fingers have occurred.

As a solution to the above-mentioned problem, the body portion of the paper container is characterized by providing a predetermined crease that forms a recess with a certain shape in advance toward the inside of the container on the ridge line formed by each side wall. The proposed device is disclosed. This device is designed to prevent deformation such as dents caused by the reduced pressure accompanying cooling after filling and sealing at high temperature, but as shown in the embodiment, concave portions are formed at each corner. In this way, the appearance design is retained, and the practical use is effective in that the finger grip during use is good. However, this device is effective against decompression due to cooling. However, in a large-capacity paper container filled at room temperature, deterioration of the appearance design due to the swollen phenomenon is unavoidable, and the paper container of the present invention has an increased body width. There was a drawback that it was difficult to hold due to the feature of (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 61-183811

  Furthermore, in this type of paper container, a bottomed container body in which a body peripheral wall that is normally formed of four sides is formed in a downward taper shape has been proposed, and is a container that is convenient for stacked storage and transportation. However, because the body wall is composed of only four surfaces, deterioration of the appearance design due to the swelling phenomenon of the trunk is inevitable, and the phenomenon that the liquid filled up accidentally due to external pressure by fingers cannot be solved. There wasn't.

  Therefore, an object of the present invention is to solve the above-mentioned problems, and various drinks such as milk, fruit juice drinks, sake, and non-food liquids such as shampoos and rinses, salt and rice, powder detergents, etc. In a paper container that fills and stores powdered, granular, or granular solids of the above, the fuselage construction surface is shaped so that the triangles are alternately adjacent to the top and bottom, increasing the strength and preventing the occurrence of blistering. The contents will not pop out even if added, and the shape will be easier to grip during use, and the product display will allow a three-dimensional design expression compared to the square cylinder body shape that has been flattened until now. The object of the present invention is to provide a paper container excellent in three-dimensional design and productivity.

  In order to solve the above-mentioned problem, the invention of claim 1 is characterized in that a square bottom component plate, four upwardly facing isosceles triangle body component plates standing from each side of the bottom component plate, Consists of two diagonal sides provided between the upward isosceles triangle body component plates and the apexes of the adjacent isosceles triangle body component plates adjacent to each other and the upper side of the same size as one side of the bottom component plate. Blank plate for paper containers composed of four downward isosceles triangle body component plates and a square top component plate with each upper edge of each downward isosceles triangle body component plate as a ridge line A pair of bottom portions facing each other when a three-dimensional paper container is provided among the bottom component plates extending on the lower extension with the lower sides of the four upward isosceles triangular body component plates as ridge lines. The lower edge of the plate is the lower edge of the other pair of opposing bottom component plates Among the top component plates that are formed on the upper extension with each upper side of the four isosceles triangular body component plates facing downward as ridge lines, and formed into a three-dimensional as a paper container When the upper end sides of the pair of opposing top portion constituting plates are formed so as to protrude from the upper end sides of the other pair of opposing top portion constituting plates, and the pair of upwardly facing isosceles triangular body constituting plates The paper container blank board is characterized in that an auxiliary folding line is vertically engraved to bisect the facing upward isosceles triangular body constituting board. The paper container formed from the paper container blank plate has a shape in which the triangles are alternately adjacent to each other on the top and bottom, and the strength is increased, the occurrence of swelling of the body is suppressed, and external pressure is inadvertently applied. However, the contents will not pop out, and the shape will be easy to grip when used. In product display, a three-dimensional design expression is possible compared to the square cylinder body shape, which has been flattened until now. A paper container excellent in three-dimensional design is provided.

  Further, the invention of claim 2 includes a square bottom component plate, four upward isosceles triangle body component plates erected from each side of the bottom component plate, and the adjacent upward isosceles triangle shape. Four downwards composed of two oblique sides provided between the body component plates and the apexes of the upward isosceles triangular body component plate adjacent to each other and composed of one side of the bottom component plate and the upper side of the same size It is composed of an isosceles triangle body component plate and a top component plate that extends on the upper extension with each upper side of each downward isosceles triangle body component plate as a ridgeline and is sealed in a gable roof shape A blank plate for a paper container, and the bottom component plate extending on the lower extension with each lower side of the four upward isosceles triangle body component plates as a ridgeline, and a three-dimensional paper container Lower end sides of a pair of opposing bottom component plates face another pair Among the top component plates that are formed so as to protrude from the lower end side of the component component plate, and are extended on the upper extension with each upper side of the four downward isosceles triangle body component plates as ridge lines, An upper isosceles triangle body structure formed so that the upper end sides of a pair of top plate components facing each other as a three-dimensional paper container protrude beyond the upper end sides of the other pair of top plate components facing each other The paper container blank board is characterized in that, among the boards, auxiliary folding lines for vertically bisecting a pair of opposing upward isosceles triangular body constituting boards are engraved. The paper container formed from the paper container blank board is changed to a shape of a generally used liquid paper container, that is, a gable roof-like paper container, thereby partially changing a box-filling machine and the like that have been used so far. In the case of a gable roof-like paper container, it is normal to open and use at the top, so by using a shape that is easy to grip as in the present invention, the feeling of use can be improved. I can expect.

  Further, the invention of claim 3 includes a square bottom component plate, four upward isosceles triangle body component plates erected from each side of the bottom component plate, and the adjacent upward isosceles triangle shape. Consists of two oblique sides provided between the body component plates and an upper side having a size obtained by connecting the apexes of the adjacent isosceles triangle-shaped body component plates adjacent to each other and multiplying one side of the bottom component plate by √2. Blanks for paper containers composed of four downward-facing isosceles triangular body constituent plates and a square top constituent plate having ridge lines at the upper sides of the respective downward isosceles triangular trunk constituent plates A pair of bottom portions opposed to each other as a three-dimensional paper container among the bottom component plates extending on the lower extension with the lower sides of the four upward isosceles triangle body component plates as ridge lines. The bottom edge of the component plate is the bottom edge of another pair of bottom component plates Of the four downwardly-facing isosceles triangle body component plates, and the top component plate extending on the upper extension with the ridgeline as the upper side of each of the four downward isosceles triangle body component plates. When the upper end sides of the pair of opposing top portion constituting plates are formed so as to protrude from the upper end sides of the other pair of opposing top portion constituting plates, and the pair of upwardly facing isosceles triangular body constituting plates The paper container blank board is characterized in that an auxiliary folding line is vertically engraved to bisect the facing upward isosceles triangular body constituting board. Each of the paper containers formed from the paper container blank plate has a length obtained by multiplying the length of each side of the top component plate by the length of each side of the bottom component plate by √2. The equilateral-triangular body component plate forms a substantially vertical surface, and the invention according to claim 4 sets the length of each side of the top component plate to the length of each side component of the bottom component plate. By setting the length between 35 and 1.55 times, each downwardly isosceles triangle body component plate has a configuration in which a substantially vertical surface is substantially maintained. By making the shapes adjacent to each other on the top and bottom, the strength increases, the occurrence of swelling of the body is suppressed, the contents do not pop out even if inadvertently applied external pressure, and the shape is easy to grip in use. In the exhibition of products, the square cylinder body has been flat and uniform until now. Has excellent steric design property can sterically design representation than in shape and aligned due to parallel vertical plane in the set state of the vessel is maintained, it is easy to handle during transport and storage.

  Further, the invention of claim 5 includes a square bottom component plate, four upward isosceles triangle body component plates erected from each side of the bottom component plate, and the adjacent upward isosceles triangle shape. Consists of two oblique sides provided between the body component plates and an upper side having a size obtained by connecting the apexes of the adjacent isosceles triangle-shaped body component plates adjacent to each other and multiplying one side of the bottom component plate by √2. Four downward isosceles triangular body component plates, and a top structure that is extended on the upper extension with each upper side of each downward isosceles triangular body component plate as a ridgeline and sealed in a gable roof shape A blank plate for a paper container composed of a plate, and among the bottom component plates extending on the lower extension with each lower side of the four upwardly facing isosceles triangular body component plates as ridge lines, the paper The bottom edge of the pair of bottom component plates facing each other when the container is solid A top structure that is formed so as to protrude from the lower end sides of a pair of opposing bottom component plates, and that extends on the upper extension with each upper side of the four downward isosceles triangular body component plates as ridge lines Among the plates, the upper edge of the pair of top component plates facing each other when a three-dimensional paper container is formed so as to protrude from the upper end sides of the other pair of opposite ceiling component plates, and the upward isosceles triangle A blank plate for a paper container, in which auxiliary folding lines for vertically bisecting a pair of opposing upward isosceles triangle-shaped body constituent plates among the shape body constituent plates are engraved. The paper container formed from the paper container blank board is changed to a shape of a generally used liquid paper container, that is, a gable roof-like paper container, thereby partially changing a box-filling machine and the like that have been used so far. In the case of a gabled roof-like paper container, since it is normal to open and use at the top, the trunk formed tapered from the top to the bottom as in the finished state of the present invention The shape is easy for the user to grip, and an improvement in usability can be expected. In addition, by setting the length of each side of the top component plate to the length of each side of the bottom component plate multiplied by √2, each downward isosceles triangle body component plate has a substantially vertical surface. The invention of claim 6 is that the length of each side of the top component plate is 1.35 to 1.55 times the length of each side of the bottom component plate. Each downwardly-facing isosceles triangle body component plate has a structure that substantially maintains a substantially vertical surface, and as described above, the strength is increased by making the body component surface adjacent to the top and bottom alternately. In addition, it suppresses the occurrence of blistering and prevents the contents from popping out even if inadvertent external pressure is applied, making it easy to grip for use, and for exhibiting products, it has been consistently flat. 3D design expression is possible compared to the square cylinder body shape that was Has excellent Takumi resistance, and alignment due parallel vertical plane in the set state of the vessel is maintained, it is easy to handle during transport and storage.

  Moreover, by comprising like the paper container blank board in any one of Claims 1 thru | or 6, it is folded using the said auxiliary folding line in the bonding process of container manufacture, and the trunk | drum left and right side edge is weld-pasted. In the combined flat cylindrical body, the top component plate and the bottom component plate that are opposed to each other protrude from the upper and lower ends of each bonded portion. It functions as a clue part to make it easier, and productivity can be improved by smooth opening operation.

  The invention of claim 7 is the paper container blank plate according to any one of claims 2, 5 and 6, wherein each of the upper sides of the four downwardly-facing isosceles triangle body component plates is a ridgeline. Of the top component plate extending over the upper extension and sealed in the shape of a gable roof and forming a folded joint-welded portion at the upper end, the upper end of at least one of the top component plates folded into the folded joint-welded portion and polymerized and welded A top notch is perforated at one upper end of the top plate constituting the side or the palm portion, and a pair of opposing downward isosceles triangle body configurations among the downward isosceles triangle body configuration plates A blank plate for a paper container, in which auxiliary folding lines for dividing the plate vertically into two halves are engraved. By comprising in this way, in the bonding process of container manufacture, the flat cylindrical body which was folded using the auxiliary fold line and was welded and bonded to the left and right ends of the body part was folded on the front side where it was bonded. A part of the upper end side of the top plate that faces the upper end side of the top plate that forms the welded portion or the top notch formed in one upper end side of the top plate that forms the joint portion is exposed. Therefore, in the take-out part of the box making process, it functions as a clue part for three-dimensionalizing each body part constituting plate, and productivity can be enhanced by a smooth opening operation.

  In the paper container of the present invention, the top and bottom portions have a rectangular planar shape, and the respective rectangular planes are rotated at a predetermined angle and are at different positions. It is a paper container that is a solid formed by a line connecting both ends of each side, and the body construction surface is shaped so that triangles are alternately adjacent to the top and bottom, increasing the strength, suppressing the occurrence of swollen, and carelessly Even if an external pressure is applied, the effect that the contents do not jump out is obtained. Furthermore, the increase in strength due to the shape change has the effect of reducing the material cost because the material used can be reduced. Also, by piercing the top plate or changing the engraving position of the auxiliary fold line, clues for opening are formed on the upper and lower ends of the flat cylindrical body, and smooth start-up is performed. Box operation is possible, and productivity can be improved.

  In addition, by making the torso configuration surface adjacent to the top and bottom alternately in the top and bottom, in the case of contents that are filled at high temperature such as liquor, the heat dissipation surface is increased, so that cooling after filling can be performed efficiently. The effect of cost reduction can be obtained by improving the production efficiency.

  In addition, when exhibiting products, it is possible to show more than three planes, regardless of the angle of rotation, which is three-dimensional compared to the square cylinder body shape that has been flattened until now. Since the design expression is possible and the design has an excellent effect, it is effective for packaging of products requiring differentiation, particularly as a liquid paper container. In addition, since there is a gap between containers during parallel display as described above, the paper container of the present invention having a large cold air contact surface has the effect of increasing the refrigeration efficiency in the case of milk or soft drinks that are refrigerated. is there. In yet another embodiment, the downward isosceles triangular body component plate can be formed substantially vertically, and the containers can be substantially parallel to each other without creating a useless gap for transport and storage. In addition, the upward isosceles triangular body constituting plate is inclined upward, so that the cold air contact surface is increased as described above, and the effect of increasing the refrigeration efficiency is obtained.

  When using containers for consumers, because the opposing isosceles triangle body surface is tapered in the vertical direction, it is possible to select a position that is easy to grip according to the size of the hand. At the same time, since the gripping surface is formed with an octagonal cross-sectional angle, it has an effect that it can be gripped with a softer feel than a normal cross-sectional angle formed with a square of a normal liquid container.

  The above-described present invention will be described in detail below with reference to the drawings. FIG. 1 is a developed plan view of a first embodiment of a paper container according to the present invention. FIG. 2 is a perspective view showing a completed state of the first embodiment. FIG. 3 is a front view showing the display state of the first embodiment. FIG. 4 is a side view showing the usage state of the first embodiment. FIG. 5 is a developed plan view of a second embodiment of the paper container according to the present invention. FIG. 6 is an explanatory view showing the folded and bonded state of the second embodiment. FIG. 7 is an exploded plan view of an essential part of a third embodiment of the paper container according to the present invention. FIG. 8 is an explanatory view of relevant parts showing the folded and bonded state of the third embodiment. FIG. 9 is a developed plan view of a fourth embodiment of the paper container according to the present invention. FIG. 10 is a front view showing the display state of the fourth embodiment. FIG. 11 is a developed plan view of a fifth embodiment of the paper container according to the present invention. FIG. 12 is an explanatory view showing the folded and bonded state of the fifth embodiment. FIG. 13 is a developed plan view of a sixth embodiment of the paper container according to the present invention. FIG. 14 is a perspective view showing the completed state of the sixth embodiment.

  FIG. 1 is a developed plan view of a first embodiment of a paper container according to the present invention, and is a blank plate R formed by punching a sheet-like material having paper as a base material and processed on the front and back surfaces of a thermoplastic synthetic resin or the like. In addition, a narrow L30 ', a substantially horizontal lower side fold line continuing to substantially equal widths L27, L28, L29, and L30, a substantially equal width L11, L12, L13, and L14 and a narrow L11' A body part surrounded by a substantially horizontal upper side horizontal fold line and a vertical cutting line on both sides, the body side inclined fold lines L1 and L2 hang down from both ends of the upper side horizontal fold line L11, respectively, and the tip is the lower side It reaches the intersection of the horizontal folding lines L30 ′ and L27, and forms a downwardly isosceles triangle-shaped body part constituting plate 1. On the left side is an upward isosceles triangular body component plate 2 with the lower side horizontal fold line L27 as the lower side, the body inclined fold lines L2 and L3 as the hypotenuse, and the tip reaching the intersection of the upper side horizontal fold lines L11 and L12. Forming. Similarly, downward isosceles triangular body constituting plates 3, 5 and 7 are defined from the upper side horizontal folding lines L12, L13 and L14, and upward isosceles triangular body constituting plates are formed from the lower side horizontal folding lines L28 and L29. 4 and 6 are defined, and the lower side horizontal fold line L30 is divided into the lower side horizontal fold line L30 ′ that is continuous at the time of forming the body and the lower side is folded to form the upward isosceles triangular body part forming plate 8. It is said that. On the right side of the downward-facing isosceles triangle body constituting plate 1 is an auxiliary body constituting plate 8 ′ that is surrounded by a right vertical cutting line with the body inclined fold line L 1 as the hypotenuse, the lower side fold line L 30 ′ as the lower side. It is installed. Also, the downward isosceles triangular body component plate, with the upper side horizontal fold line L11 ′ narrow on the left side as the upper side and the body inclined fold line L1 ′ overlapping with the body inclined fold line L1 as the hypotenuse and the left cutting line as the vertical side 1 is connected to the left side of the upward-facing isosceles triangle-shaped body component plate 8.

  Above the upper side horizontal folding lines L11, L12, L13, L14 and L11 ′, top component plates (ie, top component plates, hereinafter referred to as top component plates) 9, 13, 10, 14, 11, 15, 12 16, 9 ′, 13 ′, and bottom configuration plates 17 ′, 18, 19, 20, 17 are provided below the lower side horizontal folding lines L 30 ′ and L 27, L 28, L 29, L 30, respectively. Further, the auxiliary folding lines L9 and L10 that bisect the downward isosceles triangular body constituting plates 3 and 7 vertically bisect the top constituting plates 10 and 12 from the top constituting folding lines L44 and L45, respectively. It extends along the broken lines L41 and L43. Note that a spout mounting hole P is formed in the top component plate 11.

  FIG. 2 is a perspective view showing the completed state of the first embodiment, but in the production of the paper container of the present invention, the auxiliary folding lines L9 and L10 of the blank plate R are bent in the bonding step to form a flat state. The left and right ends of the body part are welded and bonded together to form a cylindrical body folded into a flat plate, and then in the box making process, each body part constituting plate is formed into a cylindrical shape using the body part inclined folding lines L1 to L8. To form a body octahedron. At this time, since each of the body component plates has an isosceles triangle shape, the quadrangle formed by the upper side horizontal folding lines L11, L12, L13, and L14 and the quadrangle formed by the lower side horizontal folding lines L27, L28, L29, and L30 are as follows. , 45 degrees rotationally symmetric position. Next, predetermined bottom box making and welding are performed using the lower side fold lines L27 to L30 and the bottom part fold lines L31 to L43, and then the spout Q is welded to the spout attachment hole P formed in the top part plate 11. To do. Next, the contents are filled from the upper opening of the paper container by a predetermined filling and packaging machine, and thereafter, the upper side fold lines L11 to L14, the top side fold lines L15 to L18, and the top configuration fold lines L19 to L26, L44, and L45 are used. Then, a predetermined top box making is performed, and a gable roof-like (govel top-like) top portion having a folding joint-welded portion at the uppermost end is formed and completed. Note that the top is not limited to this embodiment, and for example, a shape having a flat top called a flat top type may be used.

  As the sheet-like material used as the paper container of the present invention, for example, (1) polyethylene resin layer / paper layer / polyethylene resin layer / aluminum foil / polyethylene resin layer from the outside to the inside of the container (2) polyethylene resin layer / paper layer / polyethylene resin layer / resin film layer having an aluminum vapor deposition film / laminate material consisting of polyethylene resin layer, (3) polyethylene resin layer / paper layer / polyethylene resin layer / Laminated material comprising biaxially stretched polyamide film layer or biaxially stretched polyester resin layer / polyethylene resin layer, (4) polyethylene resin layer / paper layer / polyethylene resin layer / ethylene-vinyl acetate copolymer saponified layer / polyethylene resin (5) Polyethylene resin layer / paper layer / polyethylene resin layer / ethylene Laminated material composed of saponified vinyl acetate copolymer layer / biaxially stretched polyamide film layer / polyethylene resin layer, (6) Laminated material composed of polyethylene resin layer / paper layer / polyethylene resin layer / nylon MXD6 resin layer / polyethylene resin layer And others can be used.

  In addition, when manufacturing the paper container according to the present invention, a seal method such as a frame seal or a hot air seal can be adopted when welding the body portion, the bottom portion, or the top portion. In order to protect the end face of the blank plate R as necessary, for example, a folding hemming system that simply folds, a skive hemming system that cuts and folds the end face, a tape pasting system that bonds a plastic film etc. to the end face, etc. The end face processing method can be adopted.

  FIG. 3 is a front view showing the display state of the first embodiment of the present invention, and generally shows a downwardly facing isosceles triangular body component plate 5 positioned below a top component plate 11 to which a spout is attached. According to the present invention, the upward isosceles triangle body component plates 6 and 4 can be visually recognized on the left and right sides of the downward isosceles triangle body component plate 5 according to the present invention. Compared to the paper container of the target body tetrahedron, three-dimensional design expression can be performed. As is apparent from FIG. 3, the paper containers of the present invention displayed in parallel are easily exposed to the consumer because a gap appears between the containers near the upper side. In addition, since there is a gap between containers, for example, when refrigerated display such as milk and soft drinks, cold air from the top is less obstructed and can be received on each side of the body configuration, so refrigeration It can increase the effect.

  FIG. 4 is a side view showing the use state of the first embodiment of the present invention, and the fingers to be held are shown by dotted lines. In the paper container of the present invention, since the opposite isosceles triangles of the body component plate are tapered from the upper side to the lower side, the position to be held can be freely selected by the consumer depending on the size of his / her fingers, And since the angle of the surface to hold | grip becomes a surface angle formed with an octagon, it can hold | grip with a soft touch.

  FIG. 5 is a developed plan view of the second embodiment of the paper container according to the present invention, which is configured in substantially the same manner as the first embodiment described above, but in the first embodiment, a downwardly isosceles triangular body component plate Auxiliary fold lines L9 and L10 that bisect 3 and 7 vertically extend from the top constituent fold lines L44 and L45 across the top constituent plates 10 and 12 and to the bottom constituent fold lines L41 and L43, respectively. On the other hand, in the second embodiment, the auxiliary folding lines L9 'and L10' that bisect the upward isosceles triangular body constituting plates 2 and 6 cross the bottom constituting plates 18 and 20 from the top constituting folding lines L23 and L25, respectively. Further, it extends over the bottom constituent folding lines L38 and L39. Further, in the present embodiment, the top component plates 13 and 15 are formed such that the upper end side protrudes from the upper end sides of the top component plates 14 and 16, and the bottom component plate 17 has the lower end side. Is formed so as to protrude from the lower end side of the bottom component plate 19.

  In the production of the second embodiment of the present invention, the auxiliary folding lines L9 ′ and L10 ′ of the blank plate R were bent in the bonding step, and the left and right ends of the body portion were welded and bonded, and folded into a flat plate. It becomes a cylindrical body. As shown in FIG. 6, the top component plate 15 protrudes from the upper end of the top component plate 16 that does not appear in the drawing, and similarly, the top component plate 13 protrudes from the upper end of the top component plate 14, and the bottom component plate 17. Is bonded to the cylindrical body in a state of protruding from the lower end of the bottom component plate 19. Providing a top component plate and a bottom component plate that respectively protrude from the front and back surfaces of the cylindrical body folded flatly is possible in the feeder part of the box making process, that is, in the take-out part of the cylindrical body folded into the flat plate. In other words, it effectively functions as a clue part for performing three-dimensionalization by each body component plate, and enables a smooth opening operation. Note that the bending, three-dimensionalization, and welding of each component plate in the box making process are substantially the same as those in the first embodiment, and thus the description thereof is omitted. Further, the shape after the box making is completed and the display state are also substantially the same as those in the first embodiment, and thus the description thereof is omitted.

  FIGS. 7A, 7B, and 7C are respectively developed plan views of the essential parts of the third embodiment of the paper container according to the present invention, and are blanks having basically the same configuration as that of the first embodiment described above. FIG. 8A, FIG. 8B, and FIG. 8C are respectively explanatory views of main parts showing the folded and bonded state of the third embodiment, and FIG. (A) is the top component plates 14 and 16 to be folded among the top component plates 13, 14, 15, 16, 13 ′ that form a folding joint welded portion at the uppermost end of the gable roof mold top portion in the box-finished state. Each top component plate 15 side upper end side, that is, the upper end side between the fold line L9 and the fold line L24 on the top component plate 14, and the upper end side between the fold line L10 and the fold line L25 on the top component plate 16, respectively. Is suitable from the broken lines L16 and L18. Separating the septum shows a state where the polygonal line L9 and L10 located horizontally long substantially rectangular top notch S and S'reaching was bored. FIG. 8 (a) shows a substantially upper surface side of a tubular body that is folded and flattened by welding and bonding the left and right ends of the body portion by bending the auxiliary folding lines L9 and L10 of the blank plate R in the bonding step. In the main part of the half, the top component plates 14 and 16 are folded in half, respectively, and the rear side from the top notches S and S ′ formed in the upper end sides of the top component plates 14 and 16 on the surface side, respectively. The top component plates 14 and 16 are partially exposed. In the cylindrical body folded flatly, a part of the rear side top component plates 14 and 16 is exposed from the top notches S and S ′ respectively drilled in the upper end sides of the front side top component plates 14 and 16. Therefore, in the feeder part of the box making process, that is, the take-out part of the cylindrical body folded on the flat plate, it effectively functions as a clue part for performing the three-dimensionalization by the box making, that is, each body part constituting plate. Enable box operation. Note that the bending, three-dimensionalization, and welding of each component plate in the box making process are substantially the same as those in the first embodiment, and thus the description thereof is omitted. Further, the shape after the box making is completed and the display state are also substantially the same as those in the first embodiment, and thus the description thereof is omitted.

Similarly, FIG. 7 (b) shows that the horizontally long top rectangular notches S1 and S1 ′ are on both sides of the top component plate 15 at the top component plate 15 side upper ends of the folded top component plates 14 and 16, respectively. In the cylindrical body that is perforated at a suitable distance from the folding lines L16 and L18 and the folding lines L9 and L10 and is folded flat as shown in FIG. 8 (b). A part of the back side top component plates 14 and 16 is exposed from the top cutouts S1 and S1 ′ formed in the upper end sides of the component plates 14 and 16, respectively. By drilling the top cutouts S1 and S1 ′ at a suitable distance from the folding lines L9 and L10, the welding area of the top component plates 14 and 16 is increased compared to the embodiment of FIG. 7 (a). Therefore, the welded state of the folded portion can be stabilized.
FIG. 7C shows a substantially semi-circular top notch S2 and S2 ′ formed in the substantially central portion of the top constituent plate 15 side of each of the top constituent plates 14 and 16 to be folded. As shown in (c), in the cylindrical body folded flat, the substantially semicircular top cutouts S2 and S2 formed in the substantially central part of the upper end sides of the top side constituting plates 14 and 16 on the surface side. From the 'portion, the folded back-side top component plates 14 and 16 are exposed. By piercing the top notches S2 and S2 'in a substantially semicircular shape at the substantially central portion of the upper end sides of the top component plates 14 and 16, it is possible to further secure the welding area of the top component plates 14 and 16 portions. Therefore, the welded state of the folded portion can be further stabilized. The position, shape, and size of the top cutout are not limited to the above-described configuration, but may be any as long as they have an area that can be hooked on a pin (claw portion) provided in a feeder portion (takeout portion) in a box making process. In order to stabilize the welded state of the top component plates 14 and 16 to be folded as described above, the top component plates 14 and 16 are drilled within 4/5 of the lower side, that is, the dimension between the folding lines L16 and L18. It is desirable.
Further, although not shown in the drawings, by opening a top notch in the upper end side of the top component plate 15 or 13, in the feeder part of the box making process, that is, in the takeout part of the tubular body folded on the flat plate, In other words, it effectively functions as a clue part for performing the three-dimensionalization by each body component plate, and can perform a smooth opening operation. Moreover, according to the said structure, since a recessed part can be formed in the one side of a gas palm welding part in a box making state, it can be used, for example as a content notification means to a blind person.

  FIG. 9 is a developed plan view of a fourth embodiment of the paper container according to the present invention, and is a blank plate R formed by punching a sheet-like material having paper as a base material and processed on the front and back surfaces of a thermoplastic synthetic resin or the like. The lower side horizontal fold line continuous to the narrow L30 ′ and the substantially equal width L27, L28, L29, and L30 inscribed in the arc, and the lower side horizontal fold line inscribed in the arc concentric with the arc are formed. An upper side horizontal fold line continuous to L11, L12, L13, L14 of substantially equal width and a width of L11 ′ having a length obtained by multiplying one side of L27, L28, L29, L30 of substantially equal width by √2, and both sides In the body portion surrounded by the inclined cutting line passing through the center point of the arc, the body side inclined folding lines L1 and L2 hang down from the both ends of the upper side horizontal folding line L11, respectively, and the tips are the lower side horizontal folding lines L30 ′ and L27. Isosceles-shaped torso down to the intersection of The construction plate 1 is defined and formed. On the left side is an upward isosceles triangular body component plate 2 with the lower side horizontal fold line L27 as the lower side, the body inclined fold lines L2 and L3 as the hypotenuse, and the tip reaching the intersection of the upper side horizontal fold lines L11 and L12. Forming. Similarly, downward isosceles triangular body constituting plates 3, 5 and 7 are defined from the upper side horizontal folding lines L12, L13 and L14, and upward isosceles triangular body constituting plates are formed from the lower side horizontal folding lines L28 and L29. 4 and 6 are defined, and the lower side horizontal fold line L30 is divided into the lower side horizontal fold line L30 ′ that is continuous at the time of forming the body and the lower side is folded to form the upward isosceles triangular body part forming plate 8. It is said that. On the right side of the downward-facing isosceles triangle body constituting plate 1, the body inclined folding line L1 is the hypotenuse, the lower side lateral folding line L30 'is the lower side, and the right side is surrounded by the inclined cutting line. Are connected. Further, the upper side horizontal fold line L11 ′ having a narrow left side is used as the upper side, and the body part inclined fold line L1 ′ overlapping with the body part inclined fold line L1 is used as the hypotenuse, and a part of the left side slanted cutting line is part of the narrow upper side horizontal fold line L11. As the side perpendicular to ', the auxiliary body part constituting plate 1' superposed on the inner surface of the downward isosceles triangular body part constituting plate 1 is connected to the left side of the upward isosceles triangular body part constituting plate 8 is doing.

  Above the upper side horizontal folding lines L11, L12, L13, L14 and L11 ′, top component plates 9, 13, 10, 14, 11, 15, 12, 16, 9 ′, 13 ′ are connected in series, respectively. Bottom component plates 17 ', 18, 19, 20, and 17 are connected to the lower side horizontal folding lines L30' and L27, L28, L29, and L30, respectively, and the downward isosceles triangle body component plate is further provided. Auxiliary fold lines L9 and L10 that bisect 3 and 7 vertically extend from the top constituent fold lines L44 and L45 across the top constituent plates 10 and 12, respectively, and extend to the bottom constituent fold lines L41 and L43. Note that a spout mounting hole P is formed in the top component plate 11.

  In the manufacture of the fourth embodiment of the present invention, by bending the auxiliary folding lines L9 and L10 of the blank plate R in the bonding step, the left and right ends of the body are welded and bonded, and the taper is folded flat. Next, in the box-making process, the body part plate is three-dimensionalized using the body inclined folding lines L1 to L8 to form a body octahedron. At this time, since each of the body component plates has an isosceles triangle shape, the quadrangle formed by the upper side horizontal folding lines L11, L12, L13, and L14 and the quadrangle formed by the lower side horizontal folding lines L27, L28, L29, and L30 are as follows. , And is inscribed by the length of one side of the lower side horizontal folding line multiplied by √2 as the length of one side of the upper side horizontal folding line. The isosceles triangle body component plates 1, 3, 5 and 7 are formed substantially vertically. Next, predetermined bottom box making and welding are performed using the lower side fold lines L27 to L30 and the bottom part fold lines L31 to L43, and then the spout Q is welded to the spout attachment hole P formed in the top part plate 11. To do. Next, the contents are filled from the upper opening of the paper container by a predetermined filling and packaging machine, and thereafter, the upper side fold lines L11 to L14, the top side fold lines L15 to L18, and the top configuration fold lines L19 to L26, L44, and L45 are used. A predetermined top box is formed, and a top part of a gobble top shape is formed and welded to complete. In this embodiment, the unfolded shape is tapered, and the folding angle of the top and bottom box-making parts changes, which may cause molding defects and poor appearance, but the top component plate folded inside Inclined folding lines L19, L20, L21, and L22 provided on 10 and 12 and inclined folding lines L34, L35, L36, and l37 provided on the bottom component plates 18 and 20 that are also folded inward slightly toward the container center. It is desirable to use a fold line that curves in a straight line.

  FIG. 10 is a front view showing the display state of the fourth embodiment, but the shape assembled as described above is that the downwardly isosceles triangular body constituting plates 1, 3, 5 and 7 are formed almost vertically. At the same time, the upward isosceles triangular body component plates 2, 4, 6 and 8 are body portions which are tapered toward the bottom portion. The isosceles triangle body configuration plate is displayed in close contact with each other in a form facing each other, but from the front, the isosceles triangle body configuration is directed upward and to the left and right of the downward isosceles triangle body configuration plate 5, respectively. The plates 6 and 4 will be visible.

  FIG. 11 is a development plan view of the fifth embodiment of the paper container according to the present invention, which is configured in substantially the same manner as the fourth embodiment described above, but in the fourth embodiment, the downward isosceles triangular body component plate Auxiliary fold lines L9 and L10 that bisect 3 and 7 vertically extend from the top constituent fold lines L44 and L45 across the top constituent plates 10 and 12 and to the bottom constituent fold lines L41 and L43, respectively. On the other hand, in the fifth embodiment, the auxiliary folding lines L9 'and L10' that bisect the upward isosceles triangular body constituting plates 2 and 6 cross the bottom constituting plates 18 and 20 from the top constituting folding lines L23 and L25, respectively. Further, it extends over the bottom constituent folding lines L38 and L39.

  In the manufacture of the fifth embodiment of the present invention, by folding the auxiliary folding lines L9 ′ and L10 ′ of the blank plate R in the bonding step, the left and right ends of the body portion are welded and bonded and flattened. It becomes a cylindrical body with a taper. As shown in FIG. 12, the top component plate 15 protrudes from the upper end of the top component plate 16 that does not appear in the figure, and the top component plate 13 protrudes from the upper end of the top component plate 14 and the bottom component plate 17. Is bonded to the tapered tubular body in a state of protruding from the lower end of the bottom component plate 19. Providing a top component plate and a bottom component plate that respectively protrude from the front and back surfaces of the tapered tubular body folded into a flat plate is a feeder part in a box making process, that is, a tapered tubular body extraction part folded into the flat plate In this case, it functions effectively as a clue part for performing the opening, that is, the three-dimensionalization by each body component plate, and enables a smooth opening operation. Note that the bending, three-dimensionalization, and welding of each component plate in the box making process are substantially the same as those in the fourth embodiment, and thus the description thereof is omitted. Further, the shape after the box making is completed and the display state are also substantially the same as those in the fourth embodiment, and the description thereof is omitted.

  FIG. 13 is a developed plan view of the sixth embodiment of the paper container according to the present invention, and is a blank plate R formed by punching a sheet-like material having paper as a base material and processed on the front and back surfaces of a thermoplastic synthetic resin or the like. The lower side horizontal fold line continuous to the narrow L30 ′ and the substantially equal width L27, L28, L29, and L30 inscribed in the arc, and the lower side horizontal fold line inscribed in the arc concentric with the arc are formed. An upper side horizontal fold line continuous to L11, L12, L13, L14 of substantially equal width and a width of L11 ′ having a length obtained by multiplying one side of L27, L28, L29, L30 of substantially equal width by √2, and both sides In the body portion surrounded by the inclined cutting line passing through the center point of the arc, the body side inclined folding lines L1 and L2 hang down from the both ends of the upper side horizontal folding line L11, respectively, and the tips are the lower side horizontal folding lines L30 ′ and L27. Isosceles-shaped torso down to the intersection of The construction plate 1 is defined and formed. On the left side is an upward isosceles triangular body component plate 2 with the lower side horizontal fold line L27 as the lower side, the body inclined fold lines L2 and L3 as the hypotenuse, and the tip reaching the intersection of the upper side horizontal fold lines L11 and L12. Forming. Similarly, downward isosceles triangular body constituting plates 3, 5 and 7 are defined from the upper side horizontal folding lines L12, L13 and L14, and upward isosceles triangular body constituting plates are formed from the lower side horizontal folding lines L28 and L29. 4 and 6 are defined, and the lower side horizontal fold line L30 is divided into the lower side horizontal fold line L30 ′ that is continuous at the time of forming the body and the lower side is folded to form the upward isosceles triangular body part forming plate 8. It is said that. On the right side of the downward-facing isosceles triangle body constituting plate 1, the body inclined folding line L1 is the hypotenuse, the lower side lateral folding line L30 'is the lower side, and the right side is surrounded by the inclined cutting line. Are connected. Further, the upper side horizontal fold line L11 ′ having a narrow left side is used as the upper side, and the body part inclined fold line L1 ′ overlapping with the body part inclined fold line L1 is used as the hypotenuse, and a part of the left side slanted cutting line is part of the narrow upper side horizontal fold line L11. As the side perpendicular to ', the auxiliary body part constituting plate 1' superposed on the inner surface of the downward isosceles triangular body part constituting plate 1 is connected to the left side of the upward isosceles triangular body part constituting plate 8 is doing.

  Above the upper side horizontal folding lines L11, L12, L13, L14 and L11 ′, top component plates 9, 13, 10, 14, 11, 15, 12, 16, 9 ′, 13 ′ are connected in series, respectively. Bottom component plates 17 ', 18, 19, 20, and 17 are connected to the lower side horizontal folding lines L30' and L27, L28, L29, and L30, respectively, and the downward isosceles triangle body component plate is further provided. Auxiliary fold lines L9 and L10 that bisect 3 and 7 vertically extend from the top constituent fold lines L44 and L45 across the top constituent plates 10 and 12, respectively, and extend to the bottom constituent fold lines L41 and L43.

  In the fourth to sixth embodiments, the length of one side of the upper side horizontal folding line is set to a length obtained by multiplying the length of one side of the lower side horizontal folding line by √2. In order to be displayed in close contact with each other in a face-to-face format, the length does not necessarily have to be multiplied by √2, but as shown below, it is preferably 1.30 to 1.70 times, more preferably The length is preferably 1.35 to 1.55 times longer.

  In the manufacture of the sixth embodiment of the present invention, by bending the auxiliary folding lines L9 and L10 of the blank plate R in the bonding step, the left and right ends of the body portion are welded and bonded, and the taper is folded into a flat plate. Next, in the box-making process, the body part plate is three-dimensionalized using the body inclined folding lines L1 to L8 to form a body octahedron. At this time, since each of the body component plates has an isosceles triangle shape, the quadrangle formed by the upper side horizontal folding lines L11, L12, L13, and L14 and the quadrangle formed by the lower side horizontal folding lines L27, L28, L29, and L30 are as follows. , And is inscribed by the length of one side of the lower side horizontal folding line multiplied by √2 as the length of one side of the upper side horizontal folding line. The isosceles triangle body component plates 1, 3, 5 and 7 are formed substantially vertically. Next, predetermined bottom box making and welding are performed using the lower side horizontal folding lines L27 to L30 and the bottom constituent folding lines L31 to L43, and then the contents are filled from the upper opening of the paper container by a predetermined filling and packaging machine, After that, predetermined top boxing is performed using the upper side fold lines L11 to L14, the top side fold lines L15 to L18, and the top configuration fold lines L19 to L26, L44, and L45. As shown in FIG. Form a shape with a top. At this time, the substantially triangular ear pieces formed by folding and welding the top component plates 14, 10, 16, and 12 are fixed to the downward isosceles triangular trunk component plates 3 and 7, respectively. To be completed.

  The sixth embodiment of the present invention is used as a relatively small-capacity paper container, and is provided with a straw insertion hole having a closure at the top formed flat as described above, thereby performing pouring with a straw, Similarly, it can be used by using an existing pouring method such as raising the above-described substantially triangular ear piece and notching a part thereof. In addition, when the top part is made into a flat shape, it becomes possible to pile up containers, and it is possible to improve the efficiency of processing space for accumulation, transfer, storage and the like.

FIG. 3 is a development plan view of the first embodiment of the paper container according to the present invention. The perspective view which similarly shows the completion state of 1st Example. The front view which similarly shows the display state of 1st Example. The side view which similarly shows the use condition of 1st Example. The expansion | deployment top view of 2nd Example of the paper container concerning this invention. Explanatory drawing which similarly shows the folding bonding state of 2nd Example. The principal part expanded top view of 3rd Example of the paper container concerning this invention. The principal part explanatory drawing which similarly shows the folding bonding state of 3rd Example. The expansion | deployment top view of 4th Example of the paper container concerning this invention. The front view which similarly shows the display state of 4th Example. The expansion | deployment top view of 5th Example of the paper container concerning this invention. Explanatory drawing which similarly shows the folding bonding state of 5th Example. The expansion | deployment top view of 6th Example of the paper container concerning this invention. The perspective view which similarly shows the completion state of 6th Example.

Explanation of symbols

1, 3, 5, 7 Downward isosceles triangle body component plate 2, 4, 6, 8 Upward isosceles triangle body component plate 1 ', 8' Auxiliary trunk component plate 9-16 Top component plate 17- 20 Bottom component plate L1-L8 Trunk fold line L9, L10, L9 ', L10' Auxiliary fold line L11-L14 Upper side fold line L15-L18 Top side fold line L19-L26, L44, L45 Top part fold line L27-L30 Lower side fold line L31-L43 Bottom configuration folding line P Outlet mounting hole Q Outlet R Blank plate S, S ', S1, S1', S2, S2 'Top notch

Claims (7)

Provided between a square bottom component plate, four upward isosceles triangle body component plates standing upright from each side of the bottom component plate, and the adjacent isosceles triangle trunk component plates adjacent to each other Four downward isosceles-shaped torso component plates that connect between the apexes of the upward isosceles triangle body component plate adjacent to two oblique sides and are composed of one side of the bottom component plate and the upper side of the same size; A blank plate for a paper container comprising a square top component plate with each upper side of each downward isosceles triangle body component plate as a ridge line, and the four upward isosceles triangle cylinders Of the bottom component plates extending on the lower extension with each lower side of the component component plate as a ridgeline, the lower end sides of the pair of bottom component plates opposed to each other as a three-dimensional paper container are the other pair of opposed bottom component plates It is formed to protrude from the lower edge of the The top ends of a pair of top component plates facing each other when they are three-dimensional as a paper container among the top component plates extending on the upper extension with each upper side of the four downward isosceles triangular body component plates as ridge lines A pair of opposing upward isosceles triangle body component plates out of the upward isosceles triangle body component plates, the sides of which are formed so as to protrude from the upper end sides of the other pair of opposing top component plates. A blank board for paper containers, in which auxiliary folding lines that bisect each of the two are engraved. Provided between a square bottom component plate, four upward isosceles triangle body component plates standing upright from each side of the bottom component plate, and the adjacent isosceles triangle trunk component plates adjacent to each other Four downward isosceles-shaped torso component plates that connect between the apexes of the upward isosceles triangle body component plate adjacent to two oblique sides and are composed of one side of the bottom component plate and the upper side of the same size; A blank plate for a paper container comprising a top component plate extending on the upper extension with each upper side of each downward isosceles triangle body component plate as a ridgeline and sealed in a gable roof shape The bottom ends of a pair of bottom component plates facing each other as a paper container among the bottom component plates extending on the lower extension with the lower sides of the four upward isosceles triangle body component plates as ridge lines The side is lower than the bottom edge of the other pair of opposing bottom component plates Out of the top component plates that are formed on the upper extension with the upper sides of the four isosceles triangle body component plates facing downward as ridgelines, facing each other as a three-dimensional paper container The upper end sides of the pair of top part constituting plates are formed so as to protrude from the upper end sides of the other pair of opposing top part constituting plates, and the pair of oppositely facing of the upward isosceles triangular body part constituting plates. A blank plate for a paper container, characterized in that an auxiliary folding line for vertically dividing an upward isosceles triangular body constituting plate into two equal parts is engraved. Provided between a square bottom component plate, four upward isosceles triangle body component plates standing upright from each side of the bottom component plate, and the adjacent isosceles triangle trunk component plates adjacent to each other Four downward isosceles triangles composed of two oblique sides and an upper side having a dimension obtained by connecting the apexes of the above-mentioned isosceles triangular body part plate adjacent to each other and multiplying one side of the bottom part plate by √2 A blank plate for a paper container composed of a shape body portion configuration plate and a square top portion configuration plate having a ridge line at each upper side of each downward isosceles triangle body configuration plate , Of the bottom component plates that extend on the lower extension with each lower side of the upward isosceles triangle body component plate as a ridgeline, the lower end sides of the pair of bottom component plates facing each other as a three-dimensional paper container are the other pair Formed to protrude from the bottom edge of the opposite bottom component plate And a pair of tops facing each other as a paper container among the top part constituent plates extending on the upper extension with the respective upper sides of the four downward isosceles triangle body constituent plates as ridge lines The upper end side of the component plate is formed so as to protrude from the upper end sides of the other pair of opposing top component plates, and among the upward isosceles triangle body component plate, a pair of opposing upward isosceles triangle shapes A blank plate for paper containers, in which auxiliary folding lines for vertically dividing the body portion constituting plate are engraved. Provided between a square bottom component plate, four upward isosceles triangle body component plates standing upright from each side of the bottom component plate, and the adjacent isosceles triangle trunk component plates adjacent to each other Four oblique lines are connected to the apexes of the adjacent isosceles triangle-shaped body part plate that is adjacent to each other, and the upper side has a size of 1.35 to 1.55 times the one side of the bottom part plate. A blank plate for a paper container composed of a downward isosceles triangle body component plate and a square top component plate with each upper side of each downward isosceles triangle body component plate as a ridgeline , Of the bottom component plates extending on the lower extension with the lower sides of the four upward isosceles triangle body component plates as ridge lines, the lower end sides of the pair of bottom component plates facing each other as a three-dimensional paper container Protrudes from the lower edge of the other pair of opposing bottom component plates A pair of opposing top when formed into a three-dimensional paper container among the top component plates that are formed on the upper extension with the upper sides of the four downward isosceles triangular body component plates as ridge lines The upper part of the top plate is formed so that the upper side of the upper part of the other pair of opposing top parts is protruded, and of the pair of upwardly facing isosceles triangular body parts, a pair of two opposing upward parts A blank board for paper containers, in which auxiliary folding lines that bisect each of the equilateral triangle-shaped body parts are divided into two vertically. Provided between a square bottom component plate, four upward isosceles triangle body component plates standing upright from each side of the bottom component plate, and the adjacent isosceles triangle trunk component plates adjacent to each other Four downward isosceles triangles composed of two oblique sides and an upper side having a dimension obtained by connecting the apexes of the above-mentioned isosceles triangular body part plate adjacent to each other and multiplying one side of the bottom part plate by √2 shape barrel structure plate, for constituted paper container with a respective downwardly isosceles triangular barrel portion constituent plate top portion structure plate which is sealed on the extended by gabled shape upper extensions each upper side as ridge Of the four upwardly facing isosceles-shaped body part constituting plates, and the bottom constituting plates extending on the lower extension with the respective lower sides as ridgelines, a pair of facing when a three-dimensional paper container The bottom component of the bottom plate is a pair of opposing bottom components As a paper container among the top component plates that are formed so as to protrude from the lower end side of the top plate and extend on the upper extension with each upper side of the four downward isosceles triangular body component plates as ridge lines Of the upward isosceles triangle body component plate, the upper end sides of the pair of top component plates facing each other when formed into a solid are formed so as to protrude from the upper end sides of the other pair of opposite top component plates A blank plate for paper containers, wherein a pair of opposed upward isosceles triangle body constituting plates are vertically bisected, and auxiliary folding lines are engraved. Provided between a square bottom component plate, four upward isosceles triangle body component plates standing upright from each side of the bottom component plate, and the adjacent isosceles triangle trunk component plates adjacent to each other Four oblique lines are connected to the apexes of the adjacent isosceles triangle-shaped body part plate that is adjacent to each other, and the upper side has a size of 1.35 to 1.55 times the one side of the bottom part plate. Consists of a downward isosceles triangle body component plate and a top component plate that extends on the upper extension with each upper side of each downward isosceles triangle body component plate as a ridgeline and is sealed in a gable roof shape Blank plate for a paper container , and among the bottom component plates extending on the lower extension with each lower side of the four upward isosceles triangle body component plates as a ridgeline, a three-dimensional paper container When the bottom side of the pair of bottom component plates facing each other Of the top component plate that is formed to protrude from the lower end side of the bottom component plate, and extends on the upper extension with each upper side of the four downward isosceles triangle body component plates as ridge lines, An upper isosceles triangle body structure formed so that the upper end sides of a pair of top plate components facing each other as a three-dimensional paper container protrude beyond the upper end sides of the other pair of top plate components facing each other A blank plate for a paper container, wherein auxiliary folding lines that bisect a pair of facing upward isosceles triangle body constituting plates in a pair of plates are engraved. It is a blank board for paper containers in any one of Claims 2, 5, and 6, Comprising: Each gable roof is extended on upper extension by making each upper edge of the said downward isosceles triangular trunk | drum component board into a ridgeline. Of the top part of the top part plate that is sealed in a shape and forms a folded joint-and-weld part at the upper end, and constitutes at least one upper edge or the joint part that is folded into the folded joint-and-weld part and polymerized and welded A top notch is formed in one upper end side of the component plate, and among the above-mentioned downward isosceles triangle body component plates, a pair of opposing downward isosceles triangle body component plates are each bisected vertically. A blank plate for a paper container, wherein a fold line is engraved.

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