JPH0327940Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a box-like container that can store various items such as food and medicine inside.

[Prior Art] Conventionally, there is a box-shaped container shown in FIG. 10 for storing food, medicine, etc., for example. This box-like container 10 has a box body 11 which has a bottom and has a cylindrical shape as a whole. That is, the box body 11 is composed of a cylindrical material and a bottom plate material attached to the bottom of the cylindrical material. The box body 11 is made of paper using liner paper or the like,
It has an opening at the top. The box-shaped container 10 has a box body 11 made of paper in order to reduce the overall weight. A metal reinforcing ring 12 is attached to the upper and lower outer peripheries of the cylindrical box body 11. Furthermore, the upper opening of the box body 11 is
It is closed by a lid body 13. The opening of the lid 13 can be closed by fitting the outer periphery into the reinforcing ring 12.

The box-shaped container 10 having the above-mentioned structure is transported or stored in a warehouse or the like with various items such as food and medicine stored therein. Since the box body 11 of the box-shaped container 10 is cylindrical, it has high durability against shocks and loads in the direction of arrow A that are applied to the outside of the box body 11 during transportation or storage.

However, the above-mentioned box-like container 1 having a cylindrical shape as a whole
A value of 0 indicates, for example, poor loading efficiency on a truck bed or storage efficiency in a warehouse. That is, as shown in FIG. 11, the box-shaped container 10
When the containers 10 are placed adjacent to each other in a certain storage space, gaps are created between each box-shaped container 10, and the loading efficiency or storage efficiency is degraded accordingly.

On the other hand, conventionally, the box-shaped container 14 shown in FIG.
is proposed.

This box-like container 14 has a box body 15 having a bottom and an overall cubic shape, which is constructed by a square tube and a bottom plate attached to the bottom of the square tube. The box body 15 also
It is made of paper using liner paper and has an opening at the top.

A reinforcing frame 16 made of metal is attached to the upper outer periphery and the lower outer periphery of the box body 15. Furthermore, the box body 1
The upper opening of 5 is closed by a lid 17,
The outer periphery of the lid 17 is fitted into the reinforcing frame 16 to close the opening.

Since this box-like container 14 has a cubic shape as a whole, it can be placed adjacent to each other with each side surface close to each other as shown in FIG. 13, and can be efficiently loaded or stored in a certain storage space. I can do it.

However, the box-shaped container 14 shown in FIG.
Since the container has an overall cubic shape, the strength of each outer surface is lower than that of the cylindrical box-like container 10 shown in FIG. Therefore, when a load is applied to the outer surface of the box-shaped container 14 shown in FIG. 12 in the direction of arrow A, there is a risk that the paper side surface may be dented or damaged.

Therefore, a box-shaped container described in Japanese Utility Model Application Publication No. 53-33532 has been proposed. This container has a generally cubic shape and is made of a paper tube that is curved with each side projecting outward from the corners;
The box body includes a bottom plate material attached to the bottom of the cylindrical material, and a lid material capable of closing an opening formed above the box body. According to this container, each side of the cylindrical box body is curved outward, so it is strong, and the loading efficiency for trucks and the storage efficiency for warehouses are also improved in the shape of the cubic box shown in FIG. 12. It can be made substantially similar to the container 14.

[Problems to be solved by the invention] The box-shaped container described in Japanese Utility Model Application Publication No. 53-33532, which has these shape characteristics and has excellent strength, has a box body that is manufactured in advance by forming the inside of the cylindrical material. This was done by locking and adhering the bottom plate material to the stepped portion formed on the bottom. That is, this stepped portion is formed by bending the cylindrical material approximately 180 degrees inward from the bottom at a predetermined length position, and the bottom plate material inserted from above the cylindrical material is locked to the stepped portion, and then adhesive is applied. By gluing them together, they formed the bottom of the box body. Therefore, since the area of the bonded portion between the bottom plate material and the cylindrical material is small, there is a concern that the adhesive portion may be easily released by a small impact, or the bottom plate material may fly up from the stepped portion.

In particular, the box-shaped container described in Utility Model Application Publication No. 53-33532 is curved with the side surfaces protruding outward, and loads are easily applied to the curved portions and corners (particularly the curved portions and corners at the bottom). ), the bottom plate material was said to be easier to separate from the cylindrical material compared to ordinary cylindrical or prismatic box-shaped containers (containers shown in FIGS. 10 and 12). For this purpose, the bottom plate material and the cylindrical material are stapled together as described in Publication of Utility Model Publication No. 57-59455, or the bottom plate material is sewn to the cylindrical material as described in Publication of Utility Model Publication No. 52-12700. Although the following methods are conceivable, the use of these methods increases the number of human steps in the manufacturing process and increases the cost of the product. Furthermore, it is conceivable to attach reinforcing rings and reinforcing frames 12 and 16 as shown in each box-shaped container shown in FIGS. 10 and 12.
The entire container becomes heavy, and recently, when the container is incinerated, these rings and frames must be removed, which has been considered troublesome. Furthermore, since the box body has a special shape, it is difficult to manufacture a reinforcing ring with a shape corresponding to the shape of the box body.

The present invention was developed by focusing on the above-mentioned defects, and has excellent overall strength, and aims to improve loading efficiency on trucks and storage efficiency in warehouses, etc., and also improves the bottom of the tube and the bottom plate material The purpose is to strongly integrate the parts, and particularly to improve the strength of this integrated part.

[Means for Solving the Problems] In order to achieve the above object, the present invention has a generally cubic shape, and each side surface is curved so as to protrude outward from the corner. A box comprising a box body made of a tube material and a paper bottom plate attached to the bottom of the tube material, and a lid body capable of closing an opening formed above the box body. In a shaped container, each of the four corners and each side surface of the bottom of the cylindrical material at a predetermined length position from the bottom of the cylindrical material are bent inward at approximately right angles and overlapped, and the bottom plate material is attached to the bent portion. It has a polymerized and attached structure.

[Function] According to the present invention, the side surfaces of the paper box body are curved and protrude outward from the corners, so that the side surfaces are given durability to withstand impact and pressure from the outside. It will be done. As a result, the side surfaces of the box body are reinforced, making it possible to provide a box-shaped container with excellent overall strength. In addition, since the box body has an overall cubic shape, multiple box-shaped containers can be placed adjacent to each other with their sides close to each other.As a result, loading efficiency for trucks and storage efficiency for warehouses, etc. are improved. becomes possible.

Furthermore, each of the four corners and each side portion of the bottom of the cylinder at a predetermined length position from the bottom of the cylinder,
Because the bottom plate material was superimposed and attached to the bent part by bending it inward at approximately right angles, the attachment area of the cylindrical material to the bottom plate material became large. If the parts and bottom plate material are bonded together, a good attachment condition of the bottom plate material will be obtained. As a result, a box body is formed in which the bottom of the cylindrical material and the bottom plate material are firmly integrated.
Further, since the bent portion of the tube member bent at a substantially right angle and the bottom plate material are attached in a superimposed state, the strength of that portion is increased. That is, the paper bottom plate material and the bottom part of the tube material overlap at the attachment part, and the strength of the bottom periphery of the box body is further improved. Furthermore, each of the four corners of the bottom periphery of the box body is bent inward and overlaps with each side of the cylindrical material that is also bent inward, so the strength of that part is further improved. That will happen.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

Fig. 1 is a perspective view showing a box-like container according to an embodiment of the present invention, Fig. 2 is a sectional view taken along the - line in Fig. 1, and Fig. 3 is the same as Fig. 2 with the lid in an open state. 4 is a bottom view of the box-like container, FIG. 5 is a perspective view showing the mold rollers used to form the box body, and FIG. 6 is a perspective view showing the state in which the box body is formed by the mold rollers. 7 to 9 are a perspective view and a sectional view, respectively, showing the process of forming the bottom of the box body.

The box-like container 20 has a box body 21 which has a bottom and is generally cubic in shape. The box body 21 has an opening 22 at the top, as shown in FIG. 3, and items such as food and medicine can be stored inside the box body 21. The opening 22 of the box body 21 is connected to the lid 23
It can be closed by The lid body 23 is the upper lid part 2
4 is provided with a side lid portion 25 extending downward. The opening 22 is closed by the lid 23 by placing the lid 23 over the top of the box body 21 in the direction of arrow B, as shown in FIG. At this time, the side lid part 25 of the lid body 23 is connected to the outer surface 26 of the box body 21.
The occlusion is performed while covering the upper part of the body (see Figure 2).

Each corner 27 of the box body 21 is rounded as shown in FIG. Furthermore, each outer side surface 26 of the box body 21 is curved so as to protrude outward relative to each corner 27 . Further, the lid body 23 covering the upper part of the box body 21 also has each corner 28 in a rounded shape, and each side lid 25 is also curved so as to protrude outward from the corner 28.

The box body 21 is formed using a mold roller 2 shown in FIG.
9. Like the box body 21, the mold roller 29 has an overall cubic shape, and is rotatable in the direction of arrow C by being driven by a rotating shaft 30 whose axis is vertical. The mold roller 29, which has an overall cubic shape, has each corner 31 in a rounded shape, and each outer surface 32 is curved so as to protrude outward from the corner 31.

The box body 21 is formed by first wrapping a craft paper 33 around a mold roller 29 rotating in the direction of arrow C, as shown in FIG. Kraft paper 33 is
It is pre-wound into a roll, and the mold roller 29
The kraft paper 33 is wound one after another. An adhesive is applied to the inner surface of the craft paper 33 wound up by the mold roller 29 by an adhesive application roller 34. That is, the adhesive supply roller 3 is used for the adhesive application roller 34.
5 are rotated in contact with each other, and the roller 35 is rotated in contact with the application roller 3
A fixed amount of adhesive can be supplied to the roller surface of No. 4. As a result, the adhesive application roller 34 holds the kraft paper 33 fed in the direction of arrow D to the nipping roller 36.
The adhesive is sequentially applied to the inner surface of the kraft paper 33. kraft paper 3
An inner bottom plate 37 (bottom plate material) made of cardboard or the like is inserted and supported in the direction of arrow E on the upper surface of the mold roller 29 (the bottom side of the box body 21 to be formed) on which the box body 21 is wound. (See Figure 6). The kraft paper 33 wound around the mold roller 29 is sequentially laminated with an adhesive applied to the inner surface. When the laminated kraft paper 33 is made to a certain thickness to form a substantially cubic tube, each of the four upper corners 27 of the tube is wound around the mold roller 29. is bent inward at a substantially right angle to the direction of arrow F (see FIG. 7). The bending position is a predetermined distance from the upper end of the cylindrical member. The bending is performed while a bending jig 38 having a wedge-shaped tip is brought into contact with each corner 27 in the direction of arrow F.

Further, when the four corners 27 are bent at a substantially right angle, the upper end side of each side surface 26 of the tube member is bent inward at a substantially right angle at a predetermined distance from the upper end (see FIG. 8). The upper end side of the side surface 26 is bent with a plate-shaped bending jig 39 facing the side surface 26 and abutting it in the direction of arrow G. When the upper end sides of the four side surfaces 26 are bent inward, adhesive is applied to the bent portions 40 and the upper surface of the inner bottom plate 37 inserted into the upper part of the mold roller 29. In this state, the outer sole plate 41 (sole plate material) made of cardboard or the like is coated with adhesive and adhered to the inner sole plate 37 in the direction of arrow H, as shown in FIG. The outer bottom plate 41 to be attached has approximately the same shape as the bottom outer shape of the cylindrical material, has corner portions 42 in a rounded shape, and has each side 43 curved so as to protrude outward from the corner portions 42. Become.

A press die 44 shown in FIG. 9 is used to attach the outer sole plate 41.

The press mold 44 descends in the direction of arrow J with respect to the inner bottom plate 37 and outer bottom plate 41 to be superposed, and presses the mold roller 2
The inner sole plate 37 and the outer sole plate 41 which are overlapped with the upper surface of the inner sole plate 9 are compressed. At this time, a fixing jig 45 is brought into contact with the upper side of the outer sole plate 41 to prevent each side portion 43 of the outer sole plate 41 from warping. When the inner sole plate 37 and the outer sole plate 41 are compressed by the press mold 44, they are bonded together via the adhesive. At this time, the inner bottom plate 3 to be polymerized
A bent portion of a tube material bent at right angles is interposed between the inner bottom plate 37 and the outer bottom plate 41, and the bent portion is laminated and integrated between the inner bottom plate 37 and the outer bottom plate 41 via an adhesive. The Rukoto.

When the inner bottom plate 37 and the outer bottom plate 41 are bonded together in this way, the cylindrical material made of kraft paper 33 is pulled out from the mold roller 29 in the direction of arrow K (see FIG. By turning, the bottomed box body 21 of the box-shaped container 20 shown in FIG. 2 is formed.

On the other hand, the formation of the lid 23 is the same as the method of forming the box body 21, and is performed using a mold roller having the same configuration as the mold roller 29 described above.

That is, the formation of the lid body 23 first involves forming the box body 2.
Similarly to 1, it is formed by winding up the kraft paper 33 with a mold roller. At this time, the outer diameter of the mold roller used to form the lid 23 is slightly larger than the outer diameter dimension D1 of the box body 21. When the kraft paper 33 is laminated to a certain thickness to form a tube, each of the four corners 2 at the top of the tube
8 is bent inward at a substantially right angle in a manner similar to that shown in FIG. 7, and furthermore, the upper end side of each side surface 25 is bent inward at a substantially right angle in a manner similar to that shown in FIG. In this state, an inner bottom plate 37 and an outer bottom plate 41 having the same structure as those used for forming the box body 21 are superimposed on the bent portion of the cylindrical material and bonded to the upper lid part 24.
A lid body 23 having side lid portions 25 extending downward is formed around the periphery of each of the lids.

The box body 21 and lid body 2 formed in this way
3 is an opening 2 of the box body 21 as shown in FIG.
2 is integrated with a lid 23 to form a box-shaped container 20.

Next, the operation of the above embodiment will be explained.

According to the box-shaped container 20, the box body 21 is made of paper.
Since each side surface 26 of the corner portion 27 is curved and protrudes outward from the corner portion 27, the side surface 26 has sufficient durability to withstand external impact and pressure, compared to a case where the side surface 26 is flat. It will be granted. As a result, the side surfaces 26 of the box body 21 are reinforced. Moreover, since each side cover part 25 of the cover body 23 is also curved and protrudes outward from the corner part 28, compared to a case where the side cover part 25 is flat, it is less susceptible to impact from the outside. Sufficient durability to withstand pressure will be provided.

Furthermore, since the box-like container 20 has a substantially cubic shape as a whole, a plurality of box-like containers 20 can be arranged adjacently with their side surfaces 26 close to each other, similar to the conventional case shown in FIG. , loading efficiency for trucks and storage efficiency for warehouses etc. can be improved.

Furthermore, the box body 21 is formed by forming approximately each of the four corners and each side surface of the bottom of the cylindrical material at a predetermined length position from the upper end (bottom) of the cylindrical material formed by winding the kraft paper 33. It is bent inward at right angles and overlapped, and inner bottom plates 37 are attached to the bent portion from above and below, respectively.
Since the outer bottom plate 41 and the outer bottom plate 41 are polymerized and bonded, the cylinder material and the bottom plate material (i.e. the inner bottom plate 37, the outer bottom plate 41)
This increases the attachment area (adhesion area) between the two and provides a good attachment condition between the two. Therefore, the bottom periphery of the box body, which conventionally had to be reinforced with a metal reinforcing frame, a reinforcing ring, etc., can now be reinforced with the bottom of the cylindrical material and the bottom plate material, which are overlapped and firmly integrated. In the same way as installing the auxiliary frame,
It will be reinforced in a ring shape. That is, the bent portion of the cylindrical material bent at a substantially right angle and the inner bottom plate 37,
Since the peripheral edges of the outer bottom plate 41 overlap each other to form an annular shape, the strength of the bottom peripheral edge of the box body 21 is improved even if the box body 21 is entirely made of paper.

Furthermore, each of the four corners of the bottom periphery of the box body 21 is bent inward and overlaps with each side surface of the cylindrical material that is also bent inward. The strength of the portion indicated by the chain line) is improved. That is, the box body 21
Among the bottom parts of the box body 21, each of the four corners is most susceptible to external impact during the transportation stage, and by improving the strength of these parts, the overall strength of the box body 21 is increased.

Moreover, since the box body 21 and the lid 23 of the box-shaped container 20 are made entirely of paper, there is no need to remove the metal reinforcing ring when incinerating the box-shaped container, as is the case in the past. Moreover, the weight of the container can also be reduced. In addition, the box-shaped container according to the above embodiment can be manufactured using automated equipment without manual labor; for example, a worker can staple the floorboard material and the tube material together, as is the case in the past. Moreover, it can be manufactured through a simplified work process without using means such as suturing.

[Effects of the invention] As described above, the box-shaped container according to the invention has excellent overall strength, improves loading efficiency on trucks and storage efficiency in warehouses, etc. This has the effect of strongly integrating the plate material and particularly improving the strength of this integrated portion.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a box-like container according to an embodiment of the present invention, Fig. 2 is a sectional view taken along the - line of Fig. 1, and Fig. 3 is the same as Fig. 2 with the lid in an open state. 4 is a bottom view of the box-like container, FIG. 5 is a perspective view showing the mold rollers used to form the box body, and FIG. 6 is a perspective view showing the state in which the box body is formed by the mold rollers. Figures 7 to 9 are a perspective view and a sectional view showing the process of forming the bottom of the box body, respectively, Figure 10 is a perspective view showing a conventional box-shaped container, and Figure 11 is shown in Figure 10. FIG. 12 is a plan view showing a plurality of box-like containers stored in a certain storage space, FIG. 12 is a perspective view showing another conventional box-like container, and FIG. 13 is a plan view showing a plurality of box-like containers shown in FIG. It is a top view which shows the state stored in a fixed storage space. 20... Box-shaped container, 21... Box body, 22... Opening, 23... Lid, 26... Side, 27... Corner, 37
...Inner bottom plate (bottom plate material), 41...Outer bottom plate (bottom plate material).

Claims (1)

[Claims for Utility Model Registration] A paper cylinder having a generally cubic shape and curved with each side projecting outward from the corners, and a paper attached to the bottom of the cylinder. In a box-shaped container comprising a box body made of a bottom plate material made of aluminum, and a lid body capable of closing an opening formed above the box body, A box-shaped container having a structure in which each of the four corners and each side surface portion of the bottom of a cylindrical material is bent inward at approximately right angles and overlapped, and a bottom plate material is overlapped and attached to the bent portion.