JP2020152417A - Paper container with flange - Google Patents

Abstract

To provide a paper container with flange in which a lid made of film or paper can be securely adhered to the flange part without any gaps.SOLUTION: A paper container with flange is made by assembling blanks which respectively have a frist flange plate 7 provided on the outer end edge of a first side surface plate 3, a second flange plate 9 provided on the outer end edge of a second side surface plate 5, a first folding joint plate 13 and a second folding joint plate 14 provided between the side end edges of the first side surface plate 3 and the second side surface plate 5, a flange joint piece 16 provided on the outer edge of the first folding joint plate 13, first protruding pieces 17 provided on both ends of the frist flange plate 7 and second protruding pieces 18 provided on both ends of the second flange plate 9. A first folded plate 20 is provided on the outer edge of the first flange plate 7 so as to be overlapped with the inner surface side of the first flange plate 7 via a ninth folding line 19, and on both ends of the first folded plate 20 are provided joint end edge parts 23 which have end edges 22 which can be jointed with the end edges 21 of the second protruding pieces 18 provided on both end sides of the second flange plate 9.SELECTED DRAWING: Figure 1

Description

The present invention relates to a paper container with a flange that is filled with powdered or liquid food or the like and then heat-bonded with a lid to seal the container.

Conventionally, as a paper container with a flange that is filled with powdered or liquid foods and then heat-bonded with a lid to seal the container, side plates are placed on two opposite sides of the square bottom plate 100 via a valley fold line. 101 are continuously provided, edge pieces 102 serving as flange portions are continuously provided on the outer periphery of the side plate 101, and tongue pieces 103 extending in the lateral direction are provided at the left and right ends of the edge pieces 102. Inverted triangular folded joint plates 104 are continuously provided at the left and right ends of the side plate 101 via valley fold lines, and joint edge pieces 105 are continuously provided on the outer periphery of the folded joint plate 104 via mountain fold lines. A second side plate 106 is continuously provided on the two opposite sides of the bottom plate 100 via a valley fold line, and a second edge piece serving as a flange portion on the outer periphery of the second side plate 106 via a mountain fold line. 107s are continuously provided, and second tongue pieces 108 extending in the lateral direction are provided at the left and right ends of the second edge piece 107, and inverted triangular shapes are provided at the left and right ends of the second side plate 106, respectively, via a mountain fold line. The end edge of the second folding joint plate 109 that is not connected to the side plate 101 of the folding joining plate 104 and the one that is not connected to the second side plate 106 of the second folding joining plate 109. The edge pieces 102, the second edge piece 107, and the joint edge piece 105 are the same when the side plates 101 and 106 are bent and assembled in a tray shape. A blank for tray containers that is set to form a flat surface, and the second fold is made at the edge of the second tongue piece 108 in the vicinity where the second tongue piece 108 and the second fold-in joint plate 109 at each corner meet. There is a paper container with a flange formed by a blank for a tray container (see FIG. 10) provided with a small protrusion 110 protruding toward the joining plate 109 (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2000-255546

In the flanged paper container formed of the tray container blank described in Patent Document 1, the folding joint plates 104 connected to the left and right ends of the side plate 101 are valley-folded and connected to the second side plate 106. The second folded joint plate 109 is folded and stacked, and the edge piece 102 connected to the outer periphery of the side plate 101 and the second edge piece 107 connected to the outer periphery of the second side plate 106 are piled up. A flange portion is formed by folding and overlapping the tongue piece 103 of the edge piece 102 and the second tongue piece 108 of the second edge piece 107 and adhering them, but the flange piece 102 and the second edge piece 107 are formed. A step is formed on the surface of the flange portion to be formed by overlapping the tongue piece 103 and the tongue piece 108.
When a lid made of film or paper is attached to such a paper container with a flange for sealing, there is a concern that a gap may occur at the stepped portion of the flange if the attachment is loose, resulting in leakage of the contents. There is a problem that it may lead to alteration.

An object of the present invention is to provide a paper container with a flange capable of securely adhering a lid made of a film or paper to a flange portion without a gap.

In order to achieve the above object, the invention according to claim 1 comprises a paper base material on which a thermoplastic resin layer is laminated on at least the inner surface side of the container, and the rectangular bottom plates are opposed to each other. A first side plate is provided on each side via a first fold line, and a second side plate is provided on each of the other two opposing sides of the bottom plate via a second fold line. A first flange plate is provided on the outer end edge via a third fold line, a second flange plate is provided on the outer end edge of the second side plate via a fourth fold line, and the first side plate and the second side plate are adjacent to each other. Between the side edge of the two side plates, the first fold of an inverted triangle that is connected to both edge edges via the 5th and 6th fold lines and foldably connected to each other via the 7th fold line at the center. A joint plate and a second folding joint plate are provided, a flange joint piece is provided on the outer edge of the first folding joint plate via an eighth folding line, and first protruding pieces are provided on both ends of the first flange plate. Then, the blank provided with the second protruding pieces on both ends of the second flange plate is folded along the first and second folding lines to raise the first side plate and the second side plate, and the first side plate is raised. The 7th fold line is valley-folded, the 1st fold joint plate and the 2nd fold joint plate are overlapped, the overlapped portions are bonded, the 5th fold line is valley-folded, the 6th fold line is mountain-folded, and the first 2 While tilting to the outer surface side of the side plate, the inner surface of the flange joint piece and the first protruding piece is overlapped with the outer surface of the second flange plate including the second protruding piece, and the overlapped portion is adhered. In a paper container with a flange that is assembled by folding the third and fourth fold lines in a mountain manner and tilting the first flange plate and the second flange plate in the lateral direction, the ninth fold line is attached to the outer edge of the first flange plate. A first folded plate is provided so as to be overlapped on the inner surface side of the first flange plate, and the first flange plate and the second flange plate are laterally tilted on both end sides of the first folded plate. Occasionally, a joint end edge portion having an end edge having a shape that can be joined to the end edge of the second protruding piece provided on both end sides of the second flange plate is provided.

According to the first aspect of the invention, a first folded plate is provided on the outer edge of the first flange plate so as to be overlapped with the inner surface side of the first flange plate via a ninth folding line. Both ends of the folded plate can be joined to the edge of the second protruding piece provided on both ends of the second flange plate when the first flange plate and the second flange plate are tilted laterally. Since the joint end edge portion having an end edge having a different shape is provided, it is provided on both end sides of the second flange plate when the first flange plate and the second flange plate are tilted laterally. The second protruding piece overlaps the inner surface side of the first flange plate, that is, the upper surface of the first flange plate, and the edge of the second protruding piece provided on both end sides of the second flange plate and the first flange plate. Although a step is generated between the first folded plate and the first folded plate, the first folded plate is valley-folded from the ninth folding line and overlapped with the first flange plate, whereby the joint ends provided on both end sides of the first folded plate. The edge of the edge portion is joined to the edge of the second protruding piece provided on both ends of the second flange plate, and the second flange plate and the first folded plate overlapped with the first flange plate. There is no step between the two, and a flange portion having a smooth upper surface can be formed.
As a result, the lid made of film or paper can be securely attached to the flange portion without any gap.

The invention according to claim 2 is the invention described in claim 1, wherein the edge of the second protruding piece provided on both end sides of the second flange plate is superposed on the inner surface side of the first flange plate. The end edges of the joint end edge portions provided on both end sides of the first folded plate are characterized in that they are formed in a curved shape.

According to the second aspect of the present invention, the first folded plate which is superposed on the inner surface side of the first flange plate and the edge of the second protruding piece provided on both end sides of the second flange plate. Since the edge of the joint end edge portion provided on both end sides is formed in a curved shape, it is provided on the edge of the second protruding piece provided on the second flange plate and the first folded plate. The edge of the joint edge portion is lengthened, and the amount of glue accumulated between the edge of the second protruding piece and the edge of the joint edge portion is increased by that amount, and the edge of the second protruding piece is increased. And the edge of the joint edge portion are filled, and a flange portion having a smoother upper surface can be formed.

The invention according to claim 3 is the invention described in claim 1, wherein the edge of the second protruding piece provided on both end sides of the second flange plate and the inner surface side of the first flange plate are overlapped. 1. The end edges of the joint end edge portions provided on both end sides of the folded plate are formed in a hook shape that engages with each other.

According to the third aspect of the present invention, both ends of the first folded plate overlapped with the edge of the second protruding piece provided on both ends of the second flange plate and the inner surface side of the first flange plate. Since the edge of the joint end edge portion provided on the side is formed in a hook shape that engages with each other, the ends of the joint end edge portion provided on both end sides of the first folded plate joined. Misalignment between the edge and the edge of the second protruding piece provided on both ends of the second flange plate is prevented, and a reliable joining state can be obtained.

The invention according to claim 4 is superposed on the outer surface side of the second flange plate via a tenth folding line on the outer edge of the second flange plate according to any one of claims 1 to 3. It is characterized in that a second folding plate is provided.

According to the invention of claim 4, since the outer edge of the second flange plate is provided with the second folded plate which is overlapped with the outer surface side of the second flange plate via the tenth folding line. The second folded plate is mountain-folded from the tenth folding line on the outer edge of the second flange plate, and the second flange plate is overlapped and adhered to the outer surface side, that is, the lower surface of the second flange plate. The configuration is the same as the configuration in which the first folded plate is laminated on the inner surface side, the bonding balance of the lid made of film or paper on the flange is good, and the paper is even better in terms of strength. You can get a container.

According to the paper container with a flange according to the present invention, a lid made of a film or paper can be securely attached to the flange portion without any gap.

It is a development explanatory view which shows the 1st example of the Embodiment of the flanged paper container which concerns on this invention in a blank. It is a perspective view which shows the paper container with the flange which is in the process of assembling with the blank shown in FIG. It is a perspective view which shows the paper container with a flange assembled with the blank shown in FIG. It is a partially enlarged explanatory view which looked at the inside of the flanged paper container shown in FIG. 3 from diagonally above. It is a partially enlarged explanatory view of the outside of the flanged paper container shown in FIG. 3 viewed from diagonally below. It is a partially enlarged explanatory view of the blank assembling the 2nd example of the Embodiment of the paper container with a flange which concerns on this invention. It is a partially enlarged plan view of the paper container with a flange assembled with the blank shown in FIG. It is a partially enlarged explanatory view of the blank assembling the 3rd example of the embodiment of the paper container with a flange which concerns on this invention. It is a partially enlarged plan view of the paper container with a flange assembled with the blank shown in FIG. It is a development explanatory view which shows the conventional paper container with a flange by a blank.

Hereinafter, an example of the embodiment of the flanged paper container according to the present invention will be described in detail with reference to the drawings.
1 to 5 show a first example of the embodiment of the flanged paper container according to the present invention, FIG. 1 is a development explanatory view showing the flanged paper container of the first example with a blank, and FIG. A perspective view showing a flanged paper container being assembled with a blank shown in FIG. 1, FIG. 3 is a perspective view showing a flanged paper container assembled with a blank shown in FIG. 1, and FIG. 4 is a flanged paper container shown in FIG. FIG. 5 is a partially enlarged explanatory view of the inside of the paper container viewed from diagonally above, and FIG. 5 is a partially enlarged explanatory view of the outside of the flanged paper container shown in FIG.

The flanged paper container of this example is assembled by the blank shown in FIG.
The blank for assembling the flanged paper container of this example is made of a paper base material on which a thermoplastic resin layer is laminated at least on the inner surface side of the container.
The laminated thermoplastic resin layer may be one in which a thermoplastic resin film is laminated, one in which a thermoplastic resin is extruded and laminated, or one in which a thermoplastic resin is laminated by means such as coating or printing. You may.
In such a blank made of a paper base material, a first side plate 3 is provided on two opposite sides of the rectangular bottom plate 1 via a first folding line 2, and the other side plates of the bottom plate 1 face each other. A second side plate 5 is provided on each of the two sides via the second folding line 4.
A first flange plate 7 is provided on the outer edge of the first side surface plate 3 via a third folding line 6, and a second flange plate 9 is provided on the outer edge of the second side surface plate 5 via a fourth folding line 8. Is provided.

Between the side edge of the adjacent first side plate 3 and the second side plate 5, they are connected to both side edges via the fifth fold line 10 and the sixth fold line 11, respectively, and at the center via the seventh fold line 12. An inverted triangular first folding joint plate 13 and a second folding joint plate 14 that are foldably connected to each other are provided.
Flange joint pieces 16 are provided on the outer edge of the first folding joint plate 13 via the eighth folding line 15, first protruding pieces 17 are provided at both ends of the first flange plate 7, and both ends of the second flange plate 9. A second protruding piece 18 is provided.

Further, a first folding plate 20 is provided on the outer edge of the first flange plate 7 so as to be overlapped with the inner surface side of the first flange plate 7 via the ninth folding line 19, and both ends of the first folding plate 20 are provided. , When the first flange plate 7 and the second flange plate 9 are tilted laterally, the end edge having a shape that can be joined to the end edge 21 of the second protruding piece 18 provided on both end sides of the second flange plate 9. A joint edge portion 23 having 22 is provided.
In the first example, the shape of the edge 21 of the second protruding piece 18 and the edge 22 of the joint edge portion 23 is linear.

Further, a second folded plate 25 is provided on the outer edge of the second flange plate 9 so as to be overlapped with the outer surface side of the second flange plate 9 via the tenth folding line 24.

To assemble a paper container with a flange using a blank having such a developing structure, first, the first folding line 2 and the second folding line 4 are valley-folded to raise the first side plate 3 and the second side plate 5, and the first is The 7-fold line 12 is folded in a valley to overlap the first folding joint plate 13 and the second folding joint plate 14, and the overlapped portions are bonded.

Next, the fifth folding line 10 is valley-folded, the sixth folding line 11 is mountain-folded, the second folding joint plate 14 is tilted toward the outer surface side of the second side surface plate 5, and the flange joint piece 16 and the first protruding piece are folded. The inner surface of 17 is overlapped with the outer surface of the second flange plate 9 including the second protruding piece 18, the overlapped portions are bonded, and then the third fold line 6 and the fourth fold line 8 are mountain-folded to form the first. The flange plate 7 and the second flange plate 9 are tilted laterally (see FIG. 2).

Next, the first folded plate 20 is valley-folded from the ninth folding line 19 and overlapped with the first flange plate 7, and the edge 22 of the joint end edge portion 23 provided on both ends of the first folded plate 20 is second. The first folded plate 20 and the first flange plate 7 are bonded to each other by joining with the edge 21 of the second protruding piece 18 provided on both end sides of the flange plate 9 (see FIG. 3).

Next, the second folded plate 25 is mountain-folded from the tenth folding line 24, overlapped with the outer surface side of the second flange plate 9, and bonded.

The flanged paper container of this example assembled in this way has a first folded plate 20 that is superposed on the inner surface side of the first flange plate 7 via a ninth folding line 19 on the outer edge of the first flange plate 7. Second projecting pieces provided on both ends of the first folded plate 20 are provided on both ends of the second flange plate 9 when the first flange plate 7 and the second flange plate 9 are tilted laterally. Since the joint end edge portion 23 having an end edge 22 having a shape that can be joined to the end edge 21 of 18 is provided, when the first flange plate 7 and the second flange plate 9 are tilted laterally, the second flange plate 7 is provided. The second protruding pieces 18 provided on both end sides of the flange plate 9 overlap the inner surface side of the first flange plate 7, that is, the upper surface of the first flange plate 7, and the end edge 21 of the second protruding piece 18 and the first flange plate Although a step is generated between the first folded plate 20 and the upper surface of the seventh, the first folded plate 20 is valley-folded from the ninth folded line 19 and overlapped with the first flange plate 7 to join the joints provided on both ends of the first folded plate 20. The first edge 22 of the edge portion 23 is joined to the edge 21 of the second protruding piece 18 provided on both ends of the second flange plate 9 and overlapped with the second flange plate 9 and the first flange plate 7. There is no step between the folded plate 20 and the flange plate 20, and a flange portion having a smooth upper surface can be formed.

Further, in the first example, the second folding plate 25 is provided on the outer edge of the second flange plate 9 so as to be overlapped with the outer surface side of the second flange plate 9 via the tenth folding line 24. By folding the folded plate 25 from the 10th folding line 24 and superimposing it on the outer surface side of the second flange plate 9 and adhering it, the first folded plate 20 is superposed on the inner surface side of the first flange plate 7. With the same configuration, the bonding balance of the lid body made of film or paper on the flange portion is improved, and the strength is further improved.

6 and 7 show a second example of the embodiment of the flanged paper container according to the present invention, and FIG. 6 is a partially enlarged explanatory view and a view of a blank for assembling the flanged paper container of the second example. 7 is a partially enlarged plan view of the flanged paper container assembled with the blank shown in FIG.
The flanged paper container of the second example has the same basic configuration as the flanged paper container of the first example, and the same configuration as that of the first example will be described with the same reference numerals.

The difference between the second example and the first example is that the edge 21 of the second protruding piece 18 provided on both ends of the second flange plate 9 and the first folded plate overlapped with the inner surface side of the first flange plate 7. It is in the shape of the end edge 22 of the joint end edge portion 23 provided on both end sides of the 20.
In the second example, the shape of the edge 21 of the second protruding piece 18 and the edge 22 of the joint edge portion 23 is formed in a curved shape.

According to the flanged paper container of the second example configured in this way, the edge 21 of the second protruding piece 18 provided on both end sides of the second flange plate 9 and the inner surface side of the first flange plate 7 are overlapped. Since the end edges 22 of the joint end edge portions 23 provided on both end sides of the first folded plate 20 to be combined are formed in a curved shape, the end edges 21 of the second protruding piece 18 and the ends of the joint end edge portions 23 are formed. The edge 22 becomes longer, and the amount of glue accumulated between the edge 21 of the second protruding piece 18 and the edge 22 of the joint edge 23 increases by that amount, and the edge 21 of the second protruding piece 18 and the joint edge 22 increase. The space between the edge 22 of the 23 is filled, and a flange portion having a smoother upper surface can be formed.
Since other configurations and actions and effects are the same as those of the first example, the first example is incorporated and the description thereof will be omitted.

8 and 9 show a third example of the embodiment of the flanged paper container according to the present invention, and FIG. 8 is a partially enlarged explanatory view and a view of a blank for assembling the flanged paper container of the third example. 9 is a partially enlarged plan view of the flanged paper container assembled with the blank shown in FIG.
The flanged paper container of the third example has the same basic configuration as the flanged paper container of the first example, and the same configuration as that of the first example will be described with the same reference numerals.

The difference between the third example and the first example is that the end edge 21 of the second protruding piece 18 provided on both ends of the second flange plate 9 and the first folded plate overlapped with the inner surface side of the first flange plate 7. It is in the shape of the end edge 22 of the joint end edge portion 23 provided on both end sides of the 20.
In the third example, the shape of the edge 21 of the second protruding piece 18 and the edge 22 of the joint edge portion 23 are formed in a hook shape that engages with each other.

According to the flanged paper container of the third example configured in this way, the edge 21 of the second protruding piece 18 provided on both end sides of the second flange plate 9 and the inner surface side of the first flange plate 7 are overlapped. Since the end edges 22 of the joint end edge portions 23 provided on both end sides of the first folded plate 20 to be combined are formed in a hook shape, the end edge 22 of the joint end edge portion 23 and the end edge of the second protruding piece By joining so as to engage with 21, the misalignment between the end edge 22 of the joint end edge portion 23 and the end edge 21 of the second protruding piece can be prevented, and a reliable joining state can be obtained.
Since other configurations and actions and effects are the same as those of the first example, the first example is incorporated and the description thereof will be omitted.

1 Bottom plate 2 1st folding line 3 1st side plate 4 2nd folding line 5 2nd side plate 6 3rd folding line 7 1st flange plate 8 4th folding line 9 2nd flange plate 10 5th folding line 11 6th folding line 12 7th Folded line 13 1st folded joint plate 14 2nd folded joint plate 15 8th folded line 16 Flange joint piece 17 1st protruding piece 18 2nd protruding piece 19 9th folded line 20 1st folded plate 21 and 22 End edge 23 Joint end edge 24 10th folding line 25 2nd folding plate

Claims (4)

It is made of a paper base material on which a thermoplastic resin layer is laminated on at least the inner surface side of the container, and the first side plate is provided on each of the two opposing sides of the rectangular bottom plate via the first folding line. A second side plate is provided on each of the other two opposing sides of the bottom plate via a second fold line, and a first flange plate is provided on the outer edge of the first side plate via a third fold line. A second flange plate is provided on the outer edge of the second side plate via a fourth folding line, and between the adjacent first side plate and the side edge of the second side plate, both end edges are provided with a second flange plate. An inverted triangular first fold joint plate and a second fold joint plate are provided, which are connected via the 5th and 6th fold lines and foldably connected to each other via the 7th fold line at the center. A flange joint piece is provided on the outer edge of the first flange plate via an eighth folding line, a first protruding piece is provided on both end sides of the first flange plate, and a second protruding piece is provided on both end sides of the second flange plate. The blank is folded at the first and second fold lines to raise the first side plate and the second side plate, and the seventh fold line is folded at the valley to form the first fold joint plate and the second fold joint plate. The fifth fold line is valley-folded, the sixth fold line is mountain-folded and tilted toward the outer surface side of the second side plate, and the flange joint piece and the first one are folded. The inner surface of the protruding piece is overlapped with the outer surface of the second flange plate including the second protruding piece, the overlapped portions are adhered, and the third and fourth fold lines are mountain-folded to form the first flange plate. In a paper container with a flange that can be assembled by tilting the second flange plate in the lateral direction.
A first folded plate is provided on the outer edge of the first flange plate so as to be overlapped with the inner surface side of the first flange plate via a ninth folding line, and the first folded plate is provided on both end sides of the first folded plate. When the flange plate and the second flange plate are tilted laterally, the joint end edge portion having an end edge having a shape that can be joined to the end edge of the second protruding piece provided on both end sides of the second flange plate is formed. A paper container with a flange, which is characterized by being provided. The joint end edge portions provided on both end sides of the first folded plate which are overlapped with the end edges of the second protruding piece provided on both end sides of the second flange plate and the inner surface side of the first flange plate. The flanged paper container according to claim 1, wherein the edge of the paper container is formed in a curved shape. The end edges of the second protruding piece provided on both end sides of the second flange plate and the joint end edge portions provided on both end sides of the first folded plate superposed on the inner surface side of the first flange plate. The flanged paper container according to claim 1, wherein the edge is formed in a hook shape that engages with each other. Any of claims 1 to 3, wherein a second folded plate is provided on the outer edge of the second flange plate so as to be overlapped with the outer surface side of the second flange plate via a tenth folding line. The flanged paper container according to 1.

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