JP7545159B2 - Packaging container assembly kit using paper angles - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Act On August 7, 2020, Hirata Paper Tube Co., Ltd. transferred an assembly kit for packaging containers that uses the paper angle invented by Shunya Hirata to EIWA Sangyo Co., Ltd. Kuga Factory.

The present invention relates to an assembly kit for packaging containers that uses paper angles.

Paper packaging containers are available in a variety of materials, including wood, plastic, metal, and paper. Paper packaging containers can be disposed of as waste paper, so they are used as one-way packaging containers.

Paper angles are also called paper corner angle reinforcements, and are used to cover the ridges of packaged items to protect them from damage caused by shocks that occur during stacking, transportation, and shipping. Paper angles are made by laminating cardboard liner cardboard on the front and back of multiple pieces of unbleached cardboard, milk carton paper, waste paper, stone paper, etc. with adhesive on the inside, folding them in half along the center line in the longitudinal direction, pressurizing and stacking them into an L shape, and drying them at room temperature. Recently, some paper angles wrap cardboard liner cardboard around multiple pieces of unbleached cardboard. Paper angles have high pressure resistance, and because they are made from 100% paper with cardboard paper glued together, they can be disposed of as waste paper.

For example, Patent Document 1 shows how paper angles can be processed in a way that not only reinforces the ridges of the packaged item, but also the four corners and ridges at the same time. Paper angles are also used as part of the structure of packaging containers; for example, Patent Document 2 discloses a packaging container in which a dish-shaped body is placed at the top and bottom of the packaged item, and paper angles are used as supports between the four corners of the dish-shaped body and the packaged item, and the container is fastened with a packaging band.

Japanese Utility Model Application Publication No. 3-49963 Publication No. 57-58053

Paper packaging containers have a lower pressure resistance than other materials, making them difficult to use for transporting heavy objects. In the packaging container of Patent Document 2, the paper angle is sandwiched between the packaged object and the dish-shaped body so that there is no rattle and it stands on its own. In other words, the paper angle itself cannot stand vertically as a support if there is no packaged object. In this way, even though paper angles have been used as supports for packaging containers intended for packaged objects having a rectangular parallelepiped shape, they have never been used for packaging containers for heavy objects such as engines that do not have a hexahedral shape. Furthermore, there have been no packaging containers in the form of a cube or a box with six covered sides that form a rectangular parallelepiped, in which a paper angle is the main component.

The present invention was made to solve the above-mentioned problems, and aims to provide a packaging container that uses paper angles as the main structure of the container and can easily accommodate heavy objects of any shape.

In order to achieve the above object, the present invention provides an assembly kit for assembling a hexahedral packaging container, comprising:
upper and lower cover members formed by punching out one side surface of the L-shaped cross section of the first paper angle with a punching blade in a radial direction of 90 degrees from the folding position as a base point, forming a U-shaped groove by compression on the outside of the other side surface of the first paper angle at the folding position, and gluing a ceiling surface made of the first paper panel to an enclosing frame that is folded in a mountain shape at the U-shaped groove;
a supporting side member in which a surface portion of one side of an L-shaped cross section of a second paper angle is adhered to a pair of sides of a rectangular second paper panel constituting two opposing sides out of the four sides surrounding the packaging container , the surface portion of the one side being adhered to one surface side of the second paper panel so that a gap (d) is formed between the other surface portion of the L-shaped cross section and one end face of the second paper panel on the inner corner side of the second paper angle , and a guide groove is formed by the gap (d) on the left and right supporting side members;
A third rectangular paper panel having a thickness corresponding to the distance (d) is provided, and an insert side member is provided to configure the other two opposing sides of the four sides surrounding the packaging container .
The recess of one of the cover members is placed upward, the support side members are placed along the respective opposite left and right sides of the ceiling surface, the insertion side members are inserted into the opposing guide grooves, and the other cover member is placed on top to assemble.

The packaging container of the present invention has a paper angle as the main structure of the packaging container, and each side of the hexahedral packaging container stands on its own rather than leaning against the packaged item, and the paper angle is placed at the parts that correspond to the edges of the packaging container, making the container structurally strong. In addition, the components of the packaging container can be stacked and stored compactly, making it easy to deliver to users.

1A to 1C are diagrams showing how to assemble a packaging container assembly kit. FIG. 13 is a diagram showing components of an assembly kit in a packaging container. 11A and 11B are diagrams showing the configuration of the cover member and the supporting side member in more detail. FIG.

The paper angle has surfaces on both sides of the longitudinal center line that form an intersection angle of 90 degrees. In the present invention, a paper angle and a paper panel are used. Of the four peripheral sides of the hexahedron that constitutes the packaging container of the present invention, two opposing sides have guide grooves formed when the paper angle is glued to the opposite side of the paper panel. When the user assembles the packaging container, the other two of the four sides fit into the guide grooves, and the four sides are erected. Furthermore, the top and bottom surfaces of the packaging container of the present invention have a configuration in which short side panels made of paper angles are erected around them, and the short side panels surround the erected four sides, stably holding the four sides in an erected state.

The paper panels used with paper angles are cardboard panels made of flat paper (liner) and corrugated paper (medium) bonded together with adhesive to form a single structure, or honeycomb boards made of flat paper (liner) and honeycomb-structured paper medium bonded together with adhesive to form a single structure, or reinforced cardboard, paperboard, etc.

[Example 1]
A packing container 1 according to an embodiment of the present invention will be described below. The packing container 1 in this embodiment is a cubic or rectangular box with six closed sides.

In Figure 1, the packaging container 1 is supplied to the user as an assembly kit, and is assembled by the user. Figure 1 shows the assembly work of the packaging container 1 on the user's side. Before explaining the structure of the packaging container 1, the components of the assembly kit will be explained.

Figure 2 shows the components of the assembly kit that are assembled into the packaging container 1. The components are prepared by the party that provides the assembly kit. Each component of the assembly kit is the paper angle itself, the paper panel itself, and a paper angle and a paper panel glued together, and can be disposed of as waste paper after use. Specifically, the components of the assembly kit include upper and lower cover members 2 that respectively form the top and bottom surfaces, a paper angle 3, two support side members 4 on the left and right, and two insert side members 5 on the front and back.

The cover member 2 has a shape in which low surface portions 24 are erected on the four sides of a rectangular ceiling surface 27 made of a paper panel. The paper angle 3 is a strip-shaped paper angle itself. The support side member 4 has paper angles that serve as supports 42 on two sides of the side 41, and a guide groove 43, which will be described later. The insert side member 5 is a rectangular paper panel.

The assembly kit is provided to the user in a compactly stacked storage state PK. In the storage state PK, the top and bottom cover members 2 are stored facing each other inside the cover members 2, and the support side members 4 are stored facing each other inside the cover members 2. The paper angles that serve as the supports 42 of the support side members 4 face each other, and the paper angles 3 and the insert side members 5 are placed in the space created by this.

Figure 3 shows the detailed structure of the cover member 2 and the supporting side member 4. These are components that are pre-assembled before being provided to the user. Figure 3A shows the process of making the cover member 2. The cover member 2 is formed by bonding the surrounding frame 21 and the ceiling surface 27. The surrounding frame 21 is made into a frame shape by connecting two U-shaped frames 21a and 21b. The U-shaped frames 21a and 21b are punched out with a punching blade at a radial angle of 90 degrees from two bending positions c as base points on one side surface 22 of the L-shaped cross section of the paper angle (punched portion 23), and a U-shaped groove 25 is provided by compression on the outside of the other side surface 24 of the paper angle at the bending position c, and the paper angle is folded at the U-shaped groove 25. By providing the U-shaped groove 25 on the outside, cracks are prevented from occurring on the outside of the folded corner. On the other hand, if the U-shaped groove 25 is folded in a mountain shape, a paper bulge 26 will occur on the inside of the folded corner.

The two U-shaped frames 21a, 21b are attached to the ends of the paper angles that are butted together by wrapping adhesive tape 28 around them to form the surrounding frame 21. The surrounding frame 21 is then attached to the ceiling surface 27 to form the lid member 2. Note that while the surrounding frame 21 is created by connecting the two U-shaped frames 21a, 21b, the surrounding frame 21 may also be created by folding a single paper angle in four places along the way and wrapping it around.

Figure 3B shows the process of creating the support side member 4. The support side member 4 is made up of a rectangular paper panel that forms the side 41, and two paper angles cut to a specified length are glued to a pair of sides of the side 41 to form the support 42. The paper angle is glued to one surface of the side 41 at one side of the L-shaped cross section, so that there is a gap d between the inner angle of the L-shaped cross section and one end face 41a of the side 41. The gap d corresponds to the thickness of the insert side member 5. The gap d between the face 42b on one side of the paper angle and one end face 41a of the side 41 functions as a guide groove 43 into which the insert side member 5 is inserted.

FIG. 1 shows how to assemble an assembly kit for a packaging container 1. As shown in FIG.
The user disassembles the storage state PK, and first, the recess surrounded by the surface portion 24 of one of the cover members 2 faces upward. The rectangular paper angle 3 is placed so that the back side of the mountain fold follows the surface portion 24 and the ceiling surface 27 with respect to the front and rear opposite sides of the ceiling surface 27. Then, the supporting side member 4 is placed along each of the left and right opposite sides of the ceiling surface 27. The supporting side member 4 is placed on the two paper angles 3 in a bridging manner. The supporting side member 4 can stand upright and stand on its own because the support pillars 42 of the paper angle are glued. In addition, by placing the rectangular paper angle 3 on the cover member 2, a right angle p can be formed between the side plate of the cover member 2 (the surface portion 24 on the other side of the paper angle) and the surface portion of the paper angle 3. By applying the supporting side member 4 to this right angle p, the supporting side member 4 is stabilized without swinging.

The insert side members 5 are inserted into the opposing guide grooves 43 , and the paper angle 3 is placed over them so as to bridge the two support side members 4. The lid member 2 is placed over it and fastened with a packing band (not shown). The side 41 of the lid member 2 surrounds the support side member 4 and the insert side member 5, so that they are stably held upright. The above assembly completes the box-shaped packing container 1 with six covered sides. Each of the six sides of the packing container 1 is freestanding and does not lean against the packaged object, and the paper angle is placed at the portion corresponding to the edge of the packing container 1, so that the structure is strong. In addition, the components of the packing container 1 can be stacked and stored compactly, making it easy to deliver the packing container 1 to the user.

When opening the packaging container 1, the above steps are reversed in order to disassemble it.
In order for the supporting side member 4 to be stably installed in the lid member 2, it is necessary that the dimensions of each component member have a predetermined relationship. In FIG. 2, the front-rear direction X, the left-right direction Y, and the up-down direction Z are respectively taken as lengths x1 and y1 of the inner recess of the lid member 2 in the front-rear direction and the left-right direction. The length y3 of the rectangular paper angle 3 is slightly shorter than y1, but the difference does not exceed the width w of the surface of the paper angle. In addition, when the lengths of the supporting side member 4 in the x direction and the z direction are respectively taken as x2 and z2, the length x2 in the x direction is slightly shorter than the length x1, but it is desirable that it is made to such an extent that the supporting side member 4 is pressed against the protuberance 26 when placed in the recess of the lid member 2. When the lengths of the inserting side member 5 in the y direction and the z direction are respectively taken as y2 and z1, y2 is slightly shorter than y1, or the difference does not exceed the width w of the surface of the paper angle. z1 is approximately equal to z2.

In the above embodiment, a rectangular paper angle 3 is used, but it is possible to omit it. In this case, the support side member 4 is pressed directly against the protrusion 26, which makes the support side member 4 less stable.

[Example 2]
In the packaging container 1 of the above embodiment, the support side member 4 has a guide groove formed between the inner corner of the L-shaped cross section and one end surface of the paper panel with a distance d. In contrast, in this embodiment, as shown in FIG. 4A, the support side member 6 has four paper angles 62 cut to a predetermined length and one rectangular paper panel 61. Two paper angles 62 are attached to each of a pair of opposing sides of the paper panel 61 with an adhesive. One end surface 61a of the paper panel is abutted against the inner angle of the L-shaped cross section of one paper angle 62, and the inner surface of one side surface 62a of the L-shaped cross section is attached to one surface of the paper panel 61. The outer surface of the one side surface 62a of the other paper angle 62 is attached to the other surface of the paper panel 61. At this time, the other surface 62b of the two paper angles 62 protruding toward the other surface side of the paper panel 61 is attached at a predetermined distance d to form a guide groove 63.

Then, when assembling the packaging container, it is assembled in the same manner as in Example 1, but in Example 2, the insertion side member 5 is inserted into the guide groove 63 formed by the two paper angles 62. Therefore, the guide groove 63 is deeper than the guide groove 43 in Example 1, and has the effect of allowing the insertion side member 5 to be inserted stably. Also, according to the packaging container of Example 2, the number of standing paper angles 62 is twice the number of paper angles that make up the support pillars 42 of the packaging container of Example 1, and the supporting side member 4 can stand on its own, making it easier to assemble and resulting in a packaging container with greater strength.

In the second embodiment, the end surface 61a of one side of the paper panel is abutted against the inner corner of the L-shaped cross section of one paper angle 62, but as in the first embodiment, the inner corner of the L-shaped cross section and the end surface 61a of one side of the paper panel may be spaced apart by a distance d and connected to the guide groove 63 formed by the two paper angles 62.

In the above first and second embodiments, the paper angle or paper angle 62 that serves as the support 42 of the supporting side member 4 is a paper angle separated into left and right, but the paper angle may be folded into a U-shape so that the left and right support 42 or paper angle 62 are connected in the center. For example, in FIG. 4B, the supporting side member 7 is composed of a paper panel 71 and a U-shaped frame 72 (corresponding to the left and right support 42 or paper angle 62). The U-shaped frame 72 can be made by punching and compressing the fold grooves in the same way as the U-shaped frames 21a and 21b used to make the cover member 2.

REFERENCE SIGNS LIST 1 Packing container 2 Lid member 3 Paper angle 4 Supporting side member 5 Inserting side member 6, 7 Supporting side member 21 Enclosing frame 21a, 21b U-shaped frame 22, 24 Surface portion 23 Cut-out portion 25 U-shaped groove 26 Protuberance 27 Ceiling surface 28 Adhesive tape 41 Side surface 41a One side end surface 42 Support 42a Surface portion 42b Surface portion 43 Guide groove 61 Paper panel 61a One side end surface 62 Paper angle 62a Surface portion 62b Surface portion 63 Guide groove 71 Paper panel 72 U-shaped frame

Claims (3)

An assembly kit that is assembled into a hexahedral packaging container,
upper and lower cover members formed by punching out one side surface of the L-shaped cross section of the first paper angle with a punching blade in a radial direction of 90 degrees from the folding position as a base point, forming a U-shaped groove by compression on the outside of the other side surface of the first paper angle at the folding position, and gluing a ceiling surface made of the first paper panel to an enclosing frame that is folded in a mountain shape at the U-shaped groove;

a supporting side member in which a surface portion of one side of an L-shaped cross section of a second paper angle is adhered to a pair of sides of a rectangular second paper panel constituting two opposing sides out of the four sides surrounding the packaging container , the surface portion of the one side being adhered to one surface side of the second paper panel so that a gap (d) is left between the other surface portion of the L-shaped cross section and one edge face of the second paper panel on the inner corner side of the second paper angle , and a guide groove is formed by the gap (d) on the left and right supporting side members;

A third rectangular paper panel having a thickness corresponding to the distance (d) is provided, and an insert side member is provided to configure the other two opposing sides of the four sides surrounding the packaging container .

This assembly kit for packaging containers is characterized in that the recess of one of the lid members is faced upward, the support side members are placed along the respective opposite left and right sides of the ceiling surface, the insertion side members are inserted into the opposing guide grooves, and the other lid member is placed on top of them to assemble.
An assembly kit that is assembled into a hexahedral packaging container,
upper and lower cover members formed by punching out one side surface of the L-shaped cross section of the first paper angle with a punching blade in a radial direction of 90 degrees from the folding position as a base point, forming a U-shaped groove by compression on the outside of the other side surface of the first paper angle at the folding position, and gluing a ceiling surface made of the first paper panel to an enclosing frame that is folded in a mountain shape at the U-shaped groove;

a pair of rectangular second paper panels constituting two opposing sides of the four sides surrounding the packaging container, each of which has one surface portion of an L-shaped cross section of two second paper angles bonded to each of the front and back surfaces of a pair of sides, the other surface portion of the L-shaped cross section of each of the second paper angles protruding toward the same side of the second paper panel, the protruding surface portions being bonded with a distance (d) therebetween, and left and right supporting side members having guide grooves formed by the distance (d) ;

A third rectangular paper panel having a thickness corresponding to the distance (d) is provided, and an insert side member is provided to configure the other two opposing sides of the four sides surrounding the packaging container .

This assembly kit for packaging containers is characterized in that the recess of one of the lid members is faced upward, the support side members are placed along the respective opposite left and right sides of the ceiling surface, the insertion side members are inserted into the opposing guide grooves, and the other lid member is placed on top of them to assemble.
An assembly kit to be assembled into the packaging container of claim 1 or claim 2,The assembly kit is in an assembled state.a pair of third paper angles disposed across the opposing support side members;

In the assembled state, one of the two surfaces on the back side of the mountain fold of the pair of third paper angles is arranged to follow the inside of the other surface of the first paper angle that exists at the position of the front and rear opposite sides of the ceiling surface, and the other of the two surfaces on the back side of the mountain fold of the pair of third paper angles is arranged to follow the inside of the ceiling surface,

In the assembled state, the second paper angle, one of the surfaces of which is bonded to one surface of the second paper panel that is the outer side of the supporting side member, has two surfaces on the back side of the mountain fold attached to a right angle formed by the inside of the other surface of the first paper angle that exists at the position of the opposite side of the left and right sides of the ceiling surface and the one surface of the third paper angle.An assembly kit for a packaging container.