JP2010036939A - Paper-made packaging vessel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper-made packaging vessel having excellent shape retention property by suppressing deformation of sidewalls in spite of the fact that the vessel is paper-made. <P>SOLUTION: The paper-made packaging vessel has: a bottom surface part 1; a plurality of sidewalls 2, 3, 4 and 5 standing from each respective sides 10 of the bottom surface part 1; inward-folding pieces 6A, 6B, 7A and 7B formed continuously with corner parts A1, A2, A3 and A4 formed between the neighboring sidewalls 2, 3, 4 and 5 and secured to the sidewalls 4 and 5 by folded from the sidewalls 2 and 3 to the neighboring sidewalls 4 and 5 along the corner part A1, A2, A3 and A4 as folding lines; and folding pieces 8 and 9 formed continuously with the upper margin parts of the sidewalls 2 and 3 to the upper margin parts of the inward-folding pieces 6A, 6B, 7A and 7B and folded along both the upper margin parts as folding lines to face the sidewalls 2 and 3 and the inward-folding pieces 6A, 6B, 7A and 7B. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a paper packaging container formed by bending a single blank.

  As a packaging container for packaging various foods such as fresh foods and cooked foods, a packaging container made of foamed polystyrene having waterproofness is often used. Recently, in order to cope with environmental problems at the time of disposal and incineration, a paper packaging container having been subjected to a waterproof process is often used.

  However, the shape of the paper packaging container is inferior to that of a foamed polystyrene packaging container. Therefore, when packaging with a stretch film, the side wall of the paper packaging container is curved due to the tension of the stretch film. Deformation causes the appearance to be damaged, and the food in the paper packaging container collapses. In addition, when carrying the film with the stretch film removed, the side walls may be deformed and food may be dropped. Further, even when the stretch film is packaged, the side wall portion is deformed and cannot be reliably packaged.

  Since there is no prior art document related to the present invention that the applicant knows at the time of filing this patent application, there is no prior art document information to be disclosed.

  An object of the present invention is to deal with such a problem. That is, it is an object of the present invention to provide shape retention while being made of paper.

  In order to achieve the above object, a packaging container according to the present invention comprises at least the following configuration.

  The paper packaging container according to the present invention is a paper packaging container formed by bending one blank, and includes a bottom surface portion of the paper packaging container and a plurality of side walls rising from each side of the bottom surface portion. Folding pieces that are connected to the corners formed between the adjacent side walls, are folded from one side of the adjacent side walls to the other side wall, and are fixed to the side walls of the other side, with the corners as fold lines. And from the upper edge of the side wall on the one side to the upper edge of the folded piece, and folded back so as to face the side wall and the folded piece on the one side with the upper edge portions as fold lines. And a folded piece.

  In addition, a folded piece is provided which is connected to the upper edge portion of the other side wall and is folded back so as to face the other side wall with the upper edge portion as a fold line.

The best mode for carrying out the paper packaging container according to the present invention will be described below with reference to the drawings.
1 to 5 show a first embodiment of the paper packaging container according to the present invention, and FIGS. 6 and 7 show a second embodiment of the paper packaging container according to the present invention.

  The paper packaging container A (hereinafter referred to as “container”) A of each example is formed as a lidless type with an upper part opened by folding and fixing a point of one blank B. In addition, the blank B of each example is obtained by cutting a paper base such as paperboard, cardboard, or cardboard into a predetermined shape, and waterproofing the surface corresponding to the inside of the container A according to the purpose. A paper substrate is used.

  In the container A of the first embodiment, as shown in FIG. 1, the side walls 2, 3, 4, and 5 raised from each side 10 of the square bottom surface portion 1 are folded pieces 6A, 6B, 7A, 7B. The folding piece 6A is folded from the side wall 2 to the side wall 4 and the folding piece 6B is folded from the side wall 2 to the side wall 5 and fixed by an adhesive or the like. The folding piece 7A is folded from the side wall 3 to the side wall 4 and the folding piece 7B is folded from the side wall 3 to the side wall 5 and fixed by an adhesive or the like. The shape of the container A is held by the fixing of the folded pieces 6A, 6B, 7A, 7B.

  Further, the container A has a double structure in which the peripheral surface of the opening edge is formed by folded pieces 8, 9, 8 ′ and 9 ′ folded from the upper ends of the side walls 2, 3, 4 and 5. That is, since the side walls 2, 3, 4, and 5 are reinforced by making the peripheral surface of the opening edge of the container A double, it resists the tension of the stretch film when the container A is wrapped with the stretch film. Thus, the curved deformation of the side walls 2, 3, 4, and 5 can be suppressed. Moreover, the deformation of the side walls 2, 3, 4, 5 when carrying the stretch film in a detached state can be suppressed. Furthermore, deformation of the side walls 2, 3, 4, and 5 during packaging of the stretch film can be suppressed.

  The folded piece 8 extends from the side wall 2 via the corners A1 and A2 to the side walls 4 and 5, and the folded piece 9 extends from the side wall 3 to the side walls 4 and 5 via the corners A3 and A4. It is installed and folded.

  That is, the folded piece 8 includes a folded portion 8A on the side wall side and folded portions 8B and 8C on the folded piece side in the direction in which the surfaces folded through the corners A1 and A2 are orthogonal to each other. The piece 9 has side wall-side folded portions 9A and folded-piece-side folded portions 9B, 9C in the directions in which the surfaces folded via the corner portions A3, A4 are orthogonal to each other.

  Accordingly, the folded pieces 8 and 9 are caused to return to the original state from the folded state, the folded portion 8A and the folded portions 8B and 8C attract each other in the length direction of the folded piece 8, and the folded portion 9A and the folded portion 9A are folded back. The portions 9B and 9C can be prevented from attracting each other in the length direction of the folded piece 8. Accordingly, the folded state of the folded pieces 8 and 9 can be maintained without using an adhesive, so that the container A can be formed easily and quickly.

  The folded piece 8 'is folded so as to be sandwiched between the side wall 4 and the folded pieces 6A and 6B, and the folded piece 9' is folded between the sidewall 4 and the folded pieces 7A and 7B. Yes. The folded pieces 8 ′ and 9 ′ may be held in the folded state by the folded pieces 6A, 6B, 7A, and 7B, or may be held on the side walls 4 and 5 by an adhesive or the like. The folded state may be maintained by fixing.

  In the figure, symbol C is a fold line for generating a force in the direction of warping outward on the side walls 2, 3, 4 and 5, centering on the substantially central part of each side wall 2, 3, 4 and 5, It is formed to draw a radial pattern in three directions from the center.

  The container A is formed by bending and fixing a blank B shown in FIG. The blank B has a square bottom surface 1 at the center thereof, and the four side walls 2, 3, 4, 5 are continuously provided via a fold line 10A corresponding to each side 10 of the bottom surface 1. ing.

  The folding piece 6A connects the side wall 2 and the side wall 4 adjacent to the side wall 2, and the folding piece 6B connects the side wall 2 and the side wall 5 adjacent to the side wall 2. The folding piece 7A connects the side wall 3 and the side wall 4 adjacent to the side wall 3, and the reference numeral 7B connects the side wall 3 and the side wall 5 adjacent to the side wall 3.

The folding piece 6A is connected to the folding line 20A formed on the side edge of the side wall 2 corresponding to the corner A1 and the folding line 40A formed on the side edge of the side wall 4 corresponding to the corner A1. The folding piece 6B extends between a fold line 20B formed on the side edge of the side wall 2 corresponding to the corner portion A2 and a fold line 50A formed on the side edge of the side wall 5 corresponding to the corner portion A2. It is arranged so that.
The folding piece 7A is connected to the folding line 30A formed on the side edge of the side wall 3 corresponding to the corner A3 and the folding line 40B formed on the side edge of the side wall 4 corresponding to the corner A3. The folding piece 7B extends between a fold line 30B formed on the side edge of the side wall 3 corresponding to the corner portion A4 and a fold line 50B formed on the side edge of the side wall 5 corresponding to the corner portion A4. It is arranged so that.

  Each of the folded pieces 6A, 6B, 7A, 7B is formed with a fold line 11 along a diagonal extension of the bottom surface portion 1, and each of the folded pieces 6A, 6B, 7A, 7B is formed on the fold line 11. It can be folded along. Each of the folding pieces 6A, 6B, 7A, 7B has the side wall 2, 3 as an outer surface 12 and the side wall 4, 5 as an adhesive surface 13 with the fold line 11 as a boundary, and along the fold line 11. The side walls 2, 3, 4, 5 are connected to each other by fixing the adhesive surfaces 13 of the folded pieces 6 </ b> A, 6 </ b> B, 7 </ b> A, 7 </ b> B folded to each other to the outer surfaces of the side walls 4, 5.

  The folded piece 8 is connected via a folding line 20C corresponding to the upper edge of the side wall 2 and the upper edge of the outer surface 12 of the folded pieces 6A and 6B. The folded piece 9 is connected via a folding line 30C corresponding to the upper edge of the side wall 3 and the upper edge of the outer surface 12 of the folded pieces 7A and 7B.

  Further, the folded piece 8 has a fold line 80A continuous with the fold line 20A and a fold line 80B continuous with the fold line 20B, and the folded piece 9 has a fold line 90A continuous with the fold line 30A and the fold line 30B. A folding line 90B is formed. Further, the folded piece 8 has the folded portion 8A and the folded portions 8B, 8C connected to each other via the folding lines 80A, 80B, and the folded piece 9 has the folded portion 9A via the folded lines 90A, 90B. And the folded portions 9B and 9C.

  The folded piece 8 ′ is connected via a folding line 40C corresponding to the upper edge of the side wall 4, and the folded piece 9 ′ is connected via a folding line 50C corresponding to the upper edge of the side wall 5. Yes.

  Next, based on FIGS. 3-5, the process of forming the container A using the said blank B is demonstrated.

(First step: FIG. 3)
The side walls 2, 3, 4, and 5 are bent along the fold line 10 </ b> A and raised, and the folding pieces 6 </ b> A, 6 </ b> B, 7 </ b> A, and 7 </ b> B are bent along the fold line 11, respectively. At this time, the folding pieces 6A, 6B, 7A, 7B are bent along the folding lines 40A, 40B, 50A, 50B so that they are parallel to the side walls 2, 3.

(Second step: FIG. 4)
The folded pieces 8 'and 9' are bent along the folding lines 40C and 50C so as to face the outer surfaces of the side walls 4 and 5, respectively. At this time, as described above, the folded pieces 8 ′ and 9 ′ may be fixed to the outer surfaces of the side walls 4 and 5 with an adhesive, or may not be fixed.

(Third step: FIG. 5)
The folded pieces 8 and 9 are folded along the folding lines 20C and 30C so as to face the outer surfaces of the side walls 2 and 3, respectively, and then the folded pieces 6A, 6B, 7A and 7B are folded into the folding line 20A. Fold line 40A, fold line 20B and fold line 50A, fold line 30A and fold line 40B, fold line 30B and fold line 50B are folded so as to face the side walls 4 and 5, and the adhesive surface 13 is externally attached to the side walls 4 and 5 And it adheres with the adhesive agent with respect to the outer surface of said folding piece 8 ', 9'. At this time, even when the folded pieces 8 ′ and 9 ′ are not fixed to the outside of the side walls 4, 5, the bonding surface 13 of the folded pieces 6 A, 6 B, 7 A, 7 B is in contact with the outer surface of the side walls 4, 5. Therefore, when the folded pieces 8 'and 9' are fixed, the folded pieces 8 'and 9' are fixed by the fixing. The folded state of is maintained.

  As shown in FIG. 6, the container A of the second embodiment has a shape without the folded pieces 8 ′ and 9 ′ in the container A of the first embodiment, and the blank B shown in FIG. It is formed by adhering. The container A of the present embodiment is the same as the structure of the container A of the first embodiment except that the folded pieces 8 ′ and 9 ′ in the container A of the first embodiment are not provided. 6 and FIG. 7 are given the same reference numerals as those in FIG. 1 and FIG.

  According to the container A of the present embodiment, deformation of the side walls 2, 3 is suppressed by the folded pieces 8, 9, and deformation of the side walls 4, 5 is fixed to the side walls 4, 5. , 6B, 7A, 7B, and the folding line C that generates a force in the direction of warping outward of the folding line C with respect to the side walls 4 and 5.

  As described above, the containers A of the first and second embodiments have excellent shape retention while being made of paper by suppressing the deformation of the side walls 2, 3, 4, and 5. Can do. Therefore, it is possible to arrange the containers A in which the foods and the like are packaged nicely, and the container A can be packaged with the stretch film surely and quickly. In addition, when the container A is carried with the stretch film removed. In addition, it is possible to prevent the food in the container A from being dropped.

  Further, the folded state of the folded pieces 8 and 9 can be held without being fixed to the side walls 2 and 3 by an adhesive. Therefore, the container A is a highly safe container A with a small amount of use and location of the adhesive, and can be easily and quickly assembled.

  Further, in the container A of the first embodiment, the surface of the folded pieces 8, 9, 8 ′, 9 ′ in the folded state is positioned on the surface side, so that moisture from the edge portion of the container A can be obtained. Can be prevented, whereby deformation and breakage of the container A due to moisture can be prevented. Moreover, since the cut end of the blank B is not positioned at the edge portion of the container A due to the folded pieces 8, 9, 8 ′, 9 ′, when eating the food in the container A with the mouth attached to the edge portion of the container A, It is possible to prevent the mouth from being cut. In the case of the container A of the second embodiment, the point of preventing the mouth from being cut is that if the food in the container A is eaten with the mouth of the folded pieces 8 and 9 side, Similarly, it is possible to prevent the mouth from being cut.

The perspective view which shows 1st Example of the container which concerns on this invention. The top view of the blank which comprises the container of FIG. It is process drawing which comprises a container and shows a 1st process. It is process drawing which comprises a container, and shows a 2nd process. It is process drawing which comprises a container, and shows a 3rd process. The perspective view which shows 2nd Example of the container which concerns on this invention. The top view of the blank which comprises the container of FIG.

Explanation of symbols

A: Container B: Blank 1: Bottom part 10: Side (side of bottom part) 2: Side wall 3: Side wall 4: Side wall 5: Side wall 6A: Folding piece 6B: A folding piece 7A: Folding piece 7B: Folding piece 8: Folded piece 9: Folded piece 8 ': Folded piece 9': Folded piece A1: Corner A2: Corner A3: Corner A4: Corner

Claims (2)

A paper packaging container formed by bending one blank,
A bottom portion of the paper packaging container;
A plurality of side walls rising from each side of the bottom surface,
A folded piece that is connected to a corner formed between the adjacent side walls, is folded from one side of the adjacent side wall to the other side wall with the corner as a fold line, and is fixed to the side wall on the other side When,
Folded from the upper edge of the one side wall to the upper edge of the folded piece, and folded back so as to face the side wall and the folded piece with the upper edge as a fold line. And a paper packaging container.   2. The apparatus according to claim 1, further comprising a folded piece that is connected to an upper edge portion of the other side wall, and is folded back so as to face the other side wall with the upper edge portion as a fold line. The paper packaging container described.

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