JP5035569B2 - 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.

  Accordingly, 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 shampoo and rinse, salt and rice, powder detergent, 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 problems, the invention of claim 1 is characterized in that a bottom plate and a body plate are formed by welding and bonding a blank plate made of a sheet-like material having paper as a base material and provided with a thermoplastic synthetic resin on the front and back surfaces thereof. A paper container that seals and forms a top portion , and seals and stores a liquid in an inner space surrounded by the bottom, body, and top , the paper container comprising a square bottom component plate and the bottom component Four upward isosceles triangular body constituent plates erected from each side of the plate, and the two upper isosceles sides adjacent to the two oblique sides provided between the adjacent upward isosceles triangular body constituent plates Four downward-facing isosceles-triangle-shaped body constituent plates, each composed of an upper side having dimensions obtained by multiplying the apexes of the triangular body-constituting plates by √2 with respect to one side of the bottom-side constituent plate, Square top configuration with ridgelines at each upper side of the isosceles triangle body component plate It is a paper container characterized by the fact that the strength of the body portion forming surface is made alternately adjacent to the top and bottom, increasing the strength, suppressing the occurrence of swelling, and inadvertently applying external pressure. Even if added, the contents will not pop out, and the shape will be easy to grip when used, and the product display will have a three-dimensional design expression compared to the square cylinder body shape, which has been flattened until now. It is possible and excellent in three-dimensional design, and by making the length of each side of the top component plate the length of each side of the bottom component plate multiplied by √2, each isosceles triangle downward The body component plate forms a substantially vertical surface, and the alignment of the vertical surfaces in parallel is maintained in the assembled state of the containers, and handling during transport and storage is easy.

Further, the invention of claim 2 is formed by sealing and forming a bottom portion, a trunk portion, and a top portion by welding and bonding a blank plate made of a sheet-like material having a paper base material and a thermoplastic synthetic resin on the front and back surfaces thereof. And a paper container for hermetically storing the liquid in the inner space surrounded by the bottom, the body, and the top , wherein the paper container is formed from a square bottom component plate and each side of the bottom component plate. Four upright isosceles triangle body constituent plates that are erected, and two upward isosceles triangle trunk structures that are adjacent to two oblique sides provided between the adjacent upward isosceles triangle body constituent plates Four downward isosceles triangular body constituent plates composed of upper sides having a size of 1.35 to 1.55 times as large as one side of the bottom constituent plate connecting the apexes of the bottom plate, It consists of a square top component plate with each upper edge of the equilateral triangle body component plate as a ridgeline. The paper container is characterized by the fact that the configuration surface of the body part is formed by alternately adjoining triangles on the top and bottom, increasing the strength, suppressing the occurrence of swelling, and inadvertently applying external pressure. In addition, the contents will not pop out, and the shape will be easy to grip when used, and the three-dimensional design expression will be possible when displaying products compared to the square cylinder body shape that has been flattened until now. It is excellent in design, and 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, so that each downward isosceles triangle The shape body part constituting plate has a structure in which substantially vertical surfaces are substantially maintained, and the alignment of the vertical surfaces in parallel in the assembled state of the containers is maintained, and handling during transportation and storage is easy.

Further, the invention of claim 3 is formed by sealing and forming the bottom portion, the trunk portion, and the top portion by welding and bonding a blank plate made of a sheet-like material having a base material of paper and a thermoplastic synthetic resin on the front and back surfaces thereof. And a paper container for hermetically storing the liquid in the inner space surrounded by the bottom, the body, and the top , wherein the paper container is formed from a square bottom component plate and each side of the bottom component plate. Four upright isosceles triangle body constituent plates that are erected, and two upward isosceles triangle trunk structures that are adjacent to two oblique sides provided between the adjacent upward isosceles triangle body constituent plates Four downward isosceles triangular body constituent plates composed of top sides having dimensions obtained by connecting the vertices of the plates and multiplying one side of the bottom constituent plate by √2, and respective downward isosceles triangular cylinders The upper part of each component plate is extended over the upper part with a ridgeline and densely shaped like a gable roof The paper container is characterized in that it is configured with a top-constituting plate, and has been used so far by making the top part the shape of a generally used liquid paper container, that is, a gable roof-like paper container It can be implemented by changing some of the box making and filling machines, etc., and in the case of gable roof paper containers, it is normal to open and use at the top, so that the finished state of the present invention The body portion that is tapered from the top portion to the bottom portion has a shape that is easy for the user to grasp, 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 is a substantially vertical surface. Thus, the vertical alignment of the vertical surfaces is maintained in the assembled state of the containers, and handling during transport and storage is easy.

In addition, the invention of claim 4 is formed by sealing a bottom plate, a body portion, and a top portion by welding and bonding a blank plate made of a sheet-like material having a paper base material and a thermoplastic synthetic resin on the front and back surfaces thereof. And a paper container for hermetically storing the liquid in the inner space surrounded by the bottom, the body, and the top , wherein the paper container is formed from a square bottom component plate and each side of the bottom component plate. Four upright isosceles triangle body constituent plates that are erected, and two upward isosceles triangle trunk structures that are adjacent to two oblique sides provided between the adjacent upward isosceles triangle body constituent plates Four downward isosceles triangular body constituent plates composed of upper sides having a size of 1.35 to 1.55 times as large as one side of the bottom constituent plate connecting the apexes of the bottom plate, Gables are extended over the upper extension with each upper side of the equilateral triangular body component plate as a ridgeline A paper container comprising a top plate that is sealed in a root shape, wherein the top is a shape of a commonly used liquid paper container, that is, a gable roof paper container. It can be implemented by changing some of the box making and filling machines used up to now, and in the case of gable roof paper containers, it is normal to open and use at the top, so the finish of the present invention The body portion that is tapered from the top to the bottom as in the state has a shape that can be easily gripped by the user, and an improvement in usability can be expected. Also, by making the length of each side of the top component plate 1.35 to 1.55 times the length of each side of the bottom component plate, the downward isosceles triangular body component plate is respectively The substantially vertical surface is substantially maintained, the vertical alignment of the vertical surfaces is maintained in the assembled state of the containers, and handling during transportation and storage is easy.

Further, the invention of claim 5 is opposed to the bottom component plate extending on the lower extension with each lower side of the four upward isosceles triangle body component plates as a ridge line when facing a three-dimensional paper container. The lower end sides of the pair of bottom component plates are formed so as to protrude from the lower end sides of the other pair of opposing bottom component plates, and the upper sides of the four downward isosceles triangular body component plates are ridged As the top component plate extending on the upper extension, the upper end sides of the pair of top component plates facing each other when the paper container is three-dimensional is more than the upper end sides of the other pair of opposing top component plates A pair of opposing upward isosceles triangle body component plates, which are formed so as to protrude, are engraved with auxiliary folding lines that bisect each of the pair of opposing upward isosceles triangle body component plates. The paper according to any one of claims 1 to 4 A vessel, in the bonding step of the container production, the folded with the aid polyline torso left side flat was stuck welded end tubular body, opposite from the respective upper and lower ends which stuck Since the top component plate and the bottom component plate project from each other, it functions as a cue portion for three-dimensionalization of each body component plate in the take-out part of the box making process, and increases productivity by smooth box opening operation. I can do it.

According to a sixth aspect of the present invention, each of the four downwardly-facing isosceles triangular body constituting plates is extended on the upper extension with each upper side as a ridgeline, sealed in a gable roof shape, and a fold-in joint weld portion is formed at the upper end. A top notch is formed in at least one upper end side of the top component plate that is folded into the folding joint-and-weld welded portion of the top component plate and is polymerized and welded, or at one upper end of the top component plate that constitutes the joint portion. And a pair of opposing downward isosceles triangle body component plates, of the downward isosceles triangle body component plates, is provided with auxiliary fold lines that bisect each vertically. 5. The paper container according to any one of 3 and 4 , wherein a flat cylindrical body that is folded using the auxiliary folding line and welded and bonded to the left and right ends of the body is bonded in the bonding process of container manufacturing. Form the joined front and rear fold joints Since a part of the upper end side of the top plate that is opposed to the top notch formed in one upper end side of the top plate constituting the upper part side or the palm portion is exposed, In the take-out part, it functions as a clue part for three-dimensionalizing each body part constituting plate, and productivity can be increased by a smooth opening operation.

The invention of claim 7 is the paper container according to any one of claims 1 to 6, characterized by comprising attaching a spout on a part of the top portion structure plate, spout upwards The paper container of the present invention is excellent in torso strength and is easy to grip and does not easily deform abnormally when the paper container main body provided with is maintained in an inclined or horizontal state. The exit operation can be performed.

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

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 paper container of a related first reference example . FIG. 2 is a perspective view showing a completed state of the first reference example . FIG. 3 is a front view showing the display state of the first reference example . FIG. 4 is a side view showing the usage state of the first reference example . FIG. 5 is a developed plan view of a paper container of a related second reference example . FIG. 6 is an explanatory view showing a folded and bonded state of the second reference example . FIG. 7 is an exploded plan view of the main part of the paper container according to the present invention. FIG. 8 is an explanatory view of a main part showing a folded and bonded state of the paper container of FIG. FIG. 9 is a developed plan view of the first embodiment of the paper container according to the present invention. FIG. 10 is a front view showing the display state of the first embodiment. FIG. 11 is a developed plan view of a second embodiment of the paper container according to the present invention. FIG. 12 is also an explanatory view showing a folded and bonded state of the second embodiment. FIG. 13 is a developed plan view of a third embodiment of the paper container according to the present invention. FIG. 14 is a perspective view showing a completed state of the third embodiment.

FIG. 1 is a developed plan view of a paper container according to a first reference example, which 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 narrow horizontal line L30 ', the substantially horizontal lower side horizontal folding line that continues to the substantially equal widths L27, L28, L29, and L30, and the substantially equal width L11, L12, L13, and L14 and the narrower width L11' that continue. In the body part surrounded by the substantially horizontal upper side fold line and the vertical cutting lines on both sides, the body side fold line L1, L2 hangs down from both ends of the upper side fold line L11, and the tip is the lower side fold line. The intersection of L30 'and L27 is reached, and the downward isosceles triangular body constituting plate 1 is partitioned. 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.

Although FIG. 2 is a perspective view showing a completed state of the first reference example, in the production of paper containers of the first reference example, by bending the auxiliary fold lines L9 and L10 of the bonding process the blank plate R, flat In such a state, the left and right ends of the body portion are welded and bonded to form a tubular body folded into a flat plate, and then in the box making process, the tubular portion of each body portion constituting plate is formed using the body inclined folding lines L1 to L8. Three-dimensionalization is performed 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. In addition, about a top part, there exists a shape with a flat top part normally called a flat top type | mold, for example.

  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 reference example . Generally, the downward isosceles triangular body component plate 5 positioned below the top component plate 11 to which the spout is attached is defined as a front display position. However, according to the present invention, the upward isosceles triangular body component plates 6 and 4 can be visually recognized on the left and right sides of the downward isosceles triangular body component plate 5, respectively. Compared to a tetrahedral paper container, a 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 usage state of the first reference example , 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 paper container of the second reference example, and is configured in substantially the same manner as the first reference example described above, but in the first reference example , the downward isosceles triangular body component plate 3 and Auxiliary fold lines L9 and L10 that bisect 7 vertically extend from the top constituent fold lines L44 and L45 across the top constituent plates 10 and 12 and extend to the bottom constituent fold lines L41 and L43, respectively. In the second reference example , the auxiliary folding lines L9 ′ and L10 ′ that bisect the upward isosceles triangular body component plates 2 and 6 cross the bottom component plates 18 and 20 from the top component folding lines L23 and L25, respectively. It extends over the constituent folding lines L38 and L39. Further, in the present reference example , the top component plates 13 and 15 are formed such that the upper end sides protrude 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 reference example of the present invention, the left and right ends of the body portion were welded and bonded to each other by folding the auxiliary folding lines L9 ′ and L10 ′ of the blank plate R in the bonding step. 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. In addition, since bending, three-dimensionalization, and welding of each component plate in the box making process are substantially the same as those in the first reference example , 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 reference example , so the description thereof is omitted.

7 (a), (b), and (c) are developed plan views of the main part of the paper container according to the present invention, respectively, and are substantially the upper part of the blank plate R having a configuration basically similar to that of the first embodiment to be described later . 8 (a), (b), and (c) are explanatory views of main parts showing the folded and bonded state of the paper container of FIG. 7, and FIG. Of the top component plates 13, 14, 15, 16, and 13 ′ that form a folding joint-weld portion at the uppermost end of the gable roof mold top in the state where box making is completed, each of the top component plates 14 and 16 to be folded. 15 on the upper end side, that is, the upper end side between the fold line L9 and the fold line L24 in the top component plate 14, and the upper end side between the fold line L10 and the fold line L25 in the top component plate 16 respectively touch the both sides of the top component plate 15 and fold line L16. And a broken line at an appropriate interval from L18 9 and L10 landscape in a position to reach a substantially rectangular top notch S and S'indicates a state of being 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. In addition, since bending, three-dimensionalization, and welding of each component plate in the box making process are substantially the same as those in the first reference example , 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 reference example , so 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 the first 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 first 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 first 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 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 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 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, so that the left and right ends of the body were 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 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.

FIG. 13 is a developed plan view of a third 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 first to third embodiments, the length of one side of the upper side fold line is set to a length obtained by multiplying the length of one side of the lower side fold 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 production of the third 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 third 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.

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)

The paper as a base material, a blank plate made of sheet material having a thermoplastic synthetic resin bottom portion and the body portion and the top portion and sealed formed by welded bonding to the front and rear surfaces thereof, the bottom portion and the body portion and the top A paper container for hermetically storing a liquid in an internal space surrounded by a portion , the paper container comprising a square bottom component plate and four upwardly facing two pieces erected from each side of the bottom component plate The bottom structure is formed by connecting between the vertices of the adjacent isosceles triangle body component plate adjacent to the two isosceles sides provided between the isosceles triangle body component plate and the adjacent upward isosceles triangle body component plate. Four downward isosceles triangle body component plates composed of an upper side having a dimension obtained by multiplying one side of the plate by √2 and each upper side of each downward isosceles triangle body component plate as ridge lines A paper container comprising a square top component plate. The paper as a base material, a blank plate made of sheet material having a thermoplastic synthetic resin bottom portion and the body portion and the top portion and sealed formed by welded bonding to the front and rear surfaces thereof, the bottom portion and the body portion and the top A paper container for hermetically storing a liquid in an internal space surrounded by a portion , the paper container comprising a square bottom component plate and four upwardly facing two pieces erected from each side of the bottom component plate The bottom structure is formed by connecting between the vertices of the adjacent isosceles triangle body component plate adjacent to the two isosceles sides provided between the isosceles triangle body component plate and the adjacent upward isosceles triangle body component plate. Four downward isosceles triangle body component plates composed of an upper side having dimensions of 1.35 to 1.55 times one side of the plate, and each downward isosceles triangle body component plate It is composed of a square top plate with an upper edge as a ridgeline Container. The paper as a base material, a blank plate made of sheet material having a thermoplastic synthetic resin bottom portion and the body portion and the top portion and sealed formed by welded bonding to the front and rear surfaces thereof, the bottom portion and the body portion and the top A paper container for hermetically storing a liquid in an internal space surrounded by a portion , the paper container comprising a square bottom component plate and four upwardly facing two pieces erected from each side of the bottom component plate The bottom structure is formed by connecting between the vertices of the adjacent isosceles triangle body component plate adjacent to the two isosceles sides provided between the isosceles triangle body component plate and the adjacent upward isosceles triangle body component plate. Four down-facing isosceles triangle body components composed of an upper side with dimensions multiplied by √2 for one side of the plate, and each upper side of each downward isosceles triangle body component plate as ridge lines It consists of a top plate that extends over the upper extension and is sealed in a gable roof. Paper container characterized in that it is. The paper as a base material, a blank plate made of sheet material having a thermoplastic synthetic resin bottom portion and the body portion and the top portion and sealed formed by welded bonding to the front and rear surfaces thereof, the bottom portion and the body portion and the top A paper container for hermetically storing a liquid in an internal space surrounded by a portion , the paper container comprising a square bottom component plate and four upwardly facing two pieces erected from each side of the bottom component plate The bottom structure is formed by connecting between the vertices of the adjacent isosceles triangle body component plate adjacent to the two isosceles sides provided between the isosceles triangle body component plate and the adjacent upward isosceles triangle body component plate. Four downward isosceles triangle body component plates composed of an upper side having dimensions of 1.35 to 1.55 times one side of the plate, and each downward isosceles triangle body component plate A top structure that extends over the upper extension with the top edge as a ridgeline and is sealed in a gable roof shape Paper container characterized in that it is constituted by a plate. 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 Is formed so as to protrude from the lower end sides of the other pair of opposing bottom component plates, and is extended on the upper extension with the respective upper sides of the four downward isosceles triangle body component plates as ridge lines. Of the top component plates, the upper end sides of the pair of top component plates facing each other when formed as a three-dimensional paper container are formed so as to protrude from the upper end sides of the other pair of opposite top component plates and facing upward 5. The auxiliary folding line for vertically bisecting a pair of opposed upward isosceles triangular body constituent plates among the isosceles triangular body constituent plates is engraved. Crab paper container. Among the top component plates that extend over the upper extension with the respective upper sides of the four downward isosceles triangle body component plates as ridge lines, are sealed in a gable roof shape, and form a fold joint-weld portion at the upper end. A top notch is formed in at least one upper end side of the top component plate that is folded into the joint-welded portion and is polymerized and welded, or one upper end side of the top component plate constituting the joint portion, and the downward isosceles triangle shape. 5. The auxiliary folding line that vertically bisects each of the pair of opposing downward isosceles triangular body constituent plates among the body constituent plates is formed according to claim 3. Paper container. The paper container according to any one of claims 1 to 6, wherein a spout is attached to a part of the top plate.

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