JPH05193648A - Container for packing - Google Patents

Abstract

(57) [Summary] [Purpose] When the packaging container is no longer needed, the volume can be easily reduced to a state where it is not bulky, and can be discarded or collected in that state. To do. A paper blank 5 is provided with a peripheral wall member 2 which is curved in a rectangular tube shape, and a metal end closing member 3 attached to a lower end portion of the peripheral wall member 2, and an inner surface of the peripheral wall member 2 is provided. Around the entire circumference in the vicinity of the end closing member 3, a separation ruled line 9 is provided as a fragile portion that can be broken by hand. A plurality of bending ruled lines 1 for bending are provided on each curved portion of the inner surface of the peripheral wall member 2.
A curved pushing ruled line group 11 formed by cutting 0 is provided. The interval between the bending press rules 10 is narrow at the center of the bending press rule group 11 and wide at the left and right parts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to food and drink such as seaweed, dried bonito flakes, green tea, black tea packs, coffee, snacks, tempura powder, miso, and textile products such as towels and underwear.
Regarding packaging containers for packaging various other items,
In particular, the present invention relates to a packaging container manufactured by using paper in combination with metal or synthetic resin.

[0002]

2. Description of the Related Art A typical seaweed packaging can comprises a peripheral wall member formed by winding a metal plate in a cylindrical shape, and an end closing member fixed to the lower end of the peripheral wall member by pressing the metal plate. When,
The cover member is formed by deep-drawing a metal plate and covers the upper end portion of the peripheral wall member. This cylindrical can
It is suitable for rolling and packing sheet-shaped seaweed, but packing efficiency was poor for packing seaweed enclosed in a rectangular pack. Therefore, as a packaging can for packing the bonito flakes, which is also enclosed in a rectangular pack, a rectangular tubular can with good packaging efficiency is used. However, since these metal packaging cans use a large amount of precious metal resources, it has been demanded to reduce the amount of use thereof in response to the recent demand for resource saving. Further, these packaging cans can be recovered as metal resources when they are no longer needed, but at this time, it is difficult to crush them to reduce the volume, and therefore they have to be recovered in a bulky state. Furthermore, the contents of these packaging cans could not be seen without opening the lid member.

Therefore, recently, a packaging container using a paper tube manufactured by a spiral paper tube manufacturing machine has been developed. This packaging container is manufactured as follows. (1) By wrapping around a rotating core of a spiral paper tube manufacturing machine while winding a paper tape in a spiral shape,
Manufacture long tubular paper tubes. (2) On the outer surface of the paper tube, a printing sheet made by printing paper or a synthetic resin film is wound and attached. (3) This paper tube is cut into a predetermined length to form a peripheral wall member. (4) An end closing member made of metal or synthetic resin is fixed to the lower end of the peripheral wall member by caulking or bonding.

According to the packaging container using this paper tube,
The amount of metal resources used can be reduced as much as the peripheral wall member can be replaced with a paper tube for the metal packaging can. In addition, since the paper tube can be efficiently manufactured if it has a cylindrical shape, the cost can be reduced as compared with a metal cylindrical can.

[0005]

However, the packaging container using this paper tube also has the following problems. Since the metal end closing member is fixed to the lower end of the peripheral wall member by caulking and is difficult to separate, when the packaging container becomes unnecessary, the peripheral wall member becomes a paper resource and the end closing member is made of metal. It was not possible to separate and collect them as resources, and after all, there was no choice but to discard the entire packaging container provided with the end closing member as garbage, or to collect it without separating it. In addition, at that time, it is difficult to crush and reduce the volume, so that it has to be discarded or collected in a bulky state. As described above, there are cases where it is desired to make the peripheral wall member into a rectangular tube shape in order to improve the packaging efficiency. However, in order to manufacture a square tube-shaped paper tube, it is necessary to wrap a paper tape around the quadrangular prism-shaped rotating core. At that time, air easily enters between the paper-made tapes. The rotation speed must be reduced, and the manufacturing efficiency is reduced to about 1/5 of that of a cylindrical paper tube. Therefore, the cost is higher than that of the metal rectangular tubular can, and it cannot be expected to spread. Similarly, when a printing sheet is wrapped around the outer surface of a square tube-shaped paper tube and attached, air easily enters between the paper tube and the printing sheet, resulting in poor work efficiency. Since it is difficult to form a window in the paper tube, the contents could not be seen unless the lid member was opened like the packaging can.

Therefore, a first object of the present invention is to easily reduce the volume of the packaging container when it is no longer needed so that the packaging container is not bulky. The end closure member as a paper resource is to provide a packaging container that can be separately collected as a metal resource or a synthetic resin resource. A second object is to improve the manufacturing efficiency of the peripheral wall member in the shape of a rectangular tube, reduce the cost, and make it popular. A third object is to improve work efficiency when the outer surface of the peripheral wall member is used as a printing surface. A fourth object is to allow the contents to be viewed without opening the packaging container by a simple process.

[0007]

In order to achieve the above object, the packaging container of the present invention comprises a peripheral wall member formed by winding, curving or bending a paper blank in a tubular shape, and one of the peripheral wall members. Alternatively, a metal or synthetic resin end closing member attached to both ends is provided, and a fragile portion that can be broken by hand is provided in substantially the entire circumference in the vicinity of the end closing member in the peripheral wall member. It has a different structure (claim 1).

Here, as the "fragile portion", the following can be exemplified. A cutting rule for separation cut on the inner surface of the peripheral wall member (claim 2). The depth of this separation ruled line is 1 / thick of the thickness of the peripheral wall member.
It is generally 4 to 3/4. Further, it is preferable to cut a part of the separation cutting rule deeper than the rest (claim 3). Perforations formed through the peripheral wall member. Thin wall part with reduced wall thickness. A separate fragile member attached to the peripheral wall member.

Examples of the shape of the "peripheral wall member" include a cylindrical shape, an elliptic cylindrical shape, and a rectangular cylindrical shape (triangular cylinder, square cylinder, pentagonal cylinder, hexagonal cylinder, etc.). In the case of cylindrical or elliptical cylinder,
You will wind a paper blank, and if it is a square tube,
The paper blank will be gently curved or sharply bent at the corners. In particular, when the paper blank is gently curved at the corners, a curved pushing ruled line group or bending cutting ruled line formed by a plurality of bending pushing rules or bending cutting rules at each bending portion on the inner surface of the peripheral wall member. It is preferable to provide groups (claim 4). Further, it is preferable that the interval between the plurality of curving press rules or curving creases is narrow at the central portion of the curving press rule group or curving rule group and wide at the left and right portions (claim 5).

The "paper blank" is wound in a tubular shape,
It is preferable to provide a printing surface on the outer surface before being bent or bent (claim 6). In this case, there are a mode of directly printing on the outer surface of the paper blank and a mode of attaching a print sheet. The following can be illustrated as a layer structure of a paper blank. Single layer structure: The paper quality can be appropriately selected according to the contents, and one that is easy to process is preferable. Two-layer structure: It is composed of an outer layer and an inner layer. As the outer layer, paper, synthetic resin film or a composite material thereof is used, and as the inner layer, paper, synthetic resin film, aluminum foil or a composite material thereof is used. The outer layer can be a printed sheet as described above. In addition, the packaging container can be made moisture-proof by forming the inner layer as a moisture impermeable lining. Structure of three or more layers: consists of an outer layer, an inner core and an inner layer, and the outer layer and the inner layer are the same as above. The paper quality of the inner core can be appropriately selected according to the contents, and recycled paper can also be used. Compared to the two-layer structure, this structure can be used by combining more kinds of materials.

Further, depending on the contents, it is preferable to provide a transparent window on the peripheral wall member (claim 7). This transparent window can be provided by forming a window hole in the peripheral wall member and attaching a transparent synthetic resin film, synthetic resin plate, glass plate or the like to this window hole.

[0012]

When the packaging container of the present invention is no longer needed, the fragile portion of the peripheral wall member is pressed or torn from the outer surface side to be destroyed so that the peripheral wall member is bounded by the fragile portion. It can be separated into a majority part and a small part at the end. Since most of this peripheral wall member can be easily crushed to reduce its volume to a flat state that is not bulky, it can be discarded in that state, or most of the peripheral wall member can be used as paper resources and small at the end. The end closing member attached to the part can be separately collected as a metal resource or a synthetic resin resource (claim 1).

Here, by adopting a separation ruled line cut on the inner surface of the peripheral wall member as the fragile portion (claim 2),
Since the cutting rule for separation does not appear even on the outer surface of the peripheral wall member, the appearance is not impaired and the sealing property of the packaging container is not impaired. Further, this separation ruled line can be easily cut on the inner surface of the paper blank before the paper blank is rolled, bent or bent into a tubular shape. Furthermore, by cutting a part of this separation cutting rule deeper than the remaining part (claim 3), this part can be made particularly fragile and can be used as the starting point of destruction.

When the peripheral wall member is formed by curving a paper blank into a rectangular tube shape, each of the curved portions on the inner surface of the peripheral wall member has a plurality of curving lines or curving lines for curving. By providing the pressing rule group or the curving rule group (Claim 4), the paper blank can be easily curved to the inner surface side, and a clean curved surface can be formed on the outer surface. In addition, since the curved ruled line does not cut only by pushing the inner surface of the paper blank, the moisture-proof property is not impaired when a moisture impermeable lining is used as the inner layer of the paper blank.

Further, by making the mutual interval of the plurality of bending creases or bending creases narrow at the central portion of the bending crease group or bending crease group and wide at the left and right portions (claim 5). ), The bending of the paper blank is particularly likely to occur at the central portion of the pressing rule group for bending or the cutting rule group for bending, and the bending center is located at this central portion, so that the desired cross-sectional shape of the peripheral wall member is formed. Can be obtained accurately.

Further, providing the printing surface on the outer surface of the paper blank before winding, bending or bending the paper blank in a cylindrical shape (claim 6) means that the paper blank in a flat state. This means that you can print or attach the print sheet directly to the outer surface of the paper, which is more efficient and easier than the work of winding the print sheet on the outer surface of the conventional tubular paper tube and attaching it. A printing surface can be provided on the.

When a transparent window is provided on the peripheral wall member (claim 7), the transparent window can be easily processed into a flat paper blank, and the contents can be viewed without opening the packaging container. Will be able to.

[0018]

EXAMPLE A first example of a packaging container embodying the present invention will be described below with reference to FIGS. As shown in FIG. 1, the packaging container 1 includes a peripheral wall member 2 made of paper in the shape of a rectangular tube, an end closing member 3 made of metal attached to a lower end of the peripheral wall member 2, and a peripheral wall member 2. And a lid member 4 that covers the upper end of the.

The peripheral wall member 2 is formed by bending a rectangular paper blank 5 as shown in FIG. 2 into a square tubular shape. As shown in FIGS. 4 to 8, the paper blank 5 includes a paper inner core 6, a paper printing sheet 7 attached to the outer surface thereof, and a moisture impermeable synthetic resin film attached to the inner surface. And a lining 8 made of a composite material of paper and paper, forming a three-layer structure, and having a thickness of about 1.2 mm. Of course, since the print sheet 7 and the like are attached to the inner core 6 in a flat state, the print surface can be provided efficiently and easily. On the outer surface of the print sheet 7, for example, a trademark, product contents, etc. are printed in a display field 15 shown in FIG. 1, and an instruction such as "please press here" is printed in the instruction field 16.

From the lower end of the inner surface of the paper blank 5 to 4 to 15
At the position of mm, one separation ruled line 9 as a fragile portion extending from the left end to the right end is cut, and the depth thereof is a part near the line C-C in FIG. Corresponding to the lower part) is about 0.9 mm (see FIG. 6) and the rest is about 0.6 mm (see FIG. 5). Therefore, since the separation ruled lines 9 do not appear even on the outer surface of the peripheral wall member 2, the appearance is not impaired and the sealing property of the packaging container 1 is not impaired.

At each of the four curved portions on the inner surface of the paper blank 5, there is provided a bending press rule group 11 consisting of 11 bending press rules 10 extending from the upper end to the lower end. The depth of the pressed ruled line 10 is 0.5 to 0.9 m
m (see FIG. 4). Further, the mutual spacing of the five bending pushing rules 10 located in the central portion of the bending pushing rule group 11 is 1.4 mm, and the mutual spacing of the four bending pushing rules 10 located on the left and right portions is 4 mm. It is about 2 mm. Since these cutting lines 9 and 10 are formed before the paper blank 5 is curved into a rectangular tube shape, the work thereof is easy.

The paper blank 5 is formed into a square tubular peripheral wall member 2 by being bent 90 degrees toward the inner surface at each curved portion. At this time, the paper blank 5
Is easily curved to the inner side by the curving push rule group 11,
A beautiful curved surface is formed on the outer surface. As shown in FIG.
The radius of each curve is about 20 mm, and the curvature is particularly likely to occur in the central portion of the bending ruled line group 11 where the mutual intervals of the bending rulers 10 are narrow, and the center of curvature is located in this central part, so the peripheral wall The desired cross-sectional shape of the member 2 can be accurately obtained. Further, as shown in FIG. 8, the left-side inner lining 8 of the paper blank 5 is extended and affixed to the inner surface of the right-side inner lining 8 so that the right-side printing sheet 7 is extended and the left-side printing sheet 7 is extended. The seamed portion 12 having a small step is formed by being stuck on the outer surface.

As shown in FIG. 9, the end portion closing member 3 is formed by pressing a metal plate to form a short rectangular trapezoidal convex portion 13 and a flange portion 14 around the convex portion 13. Is. The end closing member 3 is fixed to the peripheral wall member 2 by inserting the convex portion 13 into the inner surface of the lower end portion of the peripheral wall member 2 and then caulking the flange portion 14 to the outer surface of the lower end portion of the peripheral wall member 2. There is.

As shown in FIG. 1, the lid member 4 is formed by deep-drawing a metal plate into an inverted bottomed square tube shape, and is tightly covered on the outer surface of the upper end portion of the peripheral wall member 2. Then, when the lid member 4 is covered, the joint portion 12 of the peripheral wall member 2 has a small step as described above, and therefore the lid member 4
There is almost no gap between the peripheral wall member 2 and the peripheral wall member 2, and the sealing property is good. The lid member 4 can be made of paper, and in that case, the lid member 4 can be manufactured by a method similar to that of the peripheral wall member 2.

The packaging container 1 configured as described above is
When it is no longer needed, as shown in FIG. 10, by pressing the outer surface of the peripheral wall member 2 in accordance with the instruction in the instruction column 16, first, the particularly deeply cut portion of the separation cutting rule 9 is broken, and then, By pulling the end closing member 3 downward, the entire separation crease 9 is broken, so that the peripheral wall member 2 has a majority portion 2a with the separation crease 9 as a boundary and a small portion 2b at the lower end.
And separate. Since most of the peripheral wall member 2a can be easily crushed to reduce its volume to a flat state that is not bulky, the peripheral wall member 2 can be discarded in that state, or the majority portion 2a can be used as a paper resource and can be converted into a small portion 2b. The attached end closing member 3 and lid member 4 can be separately collected as metal resources.

Next, the packaging container 21 of the second embodiment shown in FIG. 11 is different from the first embodiment in that the peripheral wall member 2 is formed into a cylindrical shape and the shape of each part is matched with this. This embodiment also exhibits the same operations and effects as those of the first embodiment except the operations and effects associated with the shape of the peripheral wall member 2, and the bending creases 10 can be omitted.

Next, in the packaging container 31 of the third embodiment shown in FIG. 12, the lid member 4 is omitted, and the end closing member 3 is attached to the upper end portion of the peripheral wall member 2 as well. A separation ruled line 9 is also provided on the inner surface of the wall, and a transparent window 1 is formed on a part of the peripheral wall member 2.
7 is different from that of the first embodiment. This embodiment also has the same operation and effect as the first embodiment, and
Since the sealing property of the packaging container 31 is extremely good, it can be used as a can. Further, the transparent window 17 can be easily processed into a flat paper blank 5, and the transparent window 17 allows the contents to be viewed without opening the packaging container 31.

The present invention is not limited to the configuration of the above-described embodiment, but may be embodied with appropriate modifications within the scope not departing from the spirit of the invention, for example, as follows. (1) As shown in FIG. 13, the paper blank 5 may have a two-layer structure of the print sheet 7 and the lining 8. However,
The three-layer structure of the above-described embodiment is superior in strength, can reduce the step formed in the joint portion 12, and has a good sealing property with the lid member. (2) Make the spacing of the curved ruled lines constant or uneven,
It is also possible to change the number of lines according to the radius and to make the pressed ruled lines.

[0029]

As described in detail above, according to the packaging container of the present invention as set forth in claim 1, when it is no longer needed, the volume can be easily reduced to a non-bulky state. In that state, the peripheral wall member can be collected as a paper resource and the end closing member as a metal resource or a synthetic resin resource for recovery. Furthermore, according to the packaging container of claim 2, the appearance and the hermeticity are not impaired, and according to the packaging container of claim 3, a part of the separating ruled line is made particularly fragile, and it becomes a starting point of destruction. can do.

Further, according to the packaging container of the fourth aspect, the manufacturing efficiency of the peripheral wall member in the shape of a rectangular tube is increased, the cost is reduced, and it can be widely used. Further, claim 5
According to the packaging container described above, a desired cross-sectional shape of the rectangular tubular peripheral wall member can be accurately obtained.

Further, according to the packaging container of the sixth aspect, the printing surface is provided efficiently and easily as compared with the conventional work in which the printing sheet is wrapped around the outer surface of the tubular paper tube and attached. be able to.

According to the packaging container of the seventh aspect, the contents can be viewed by a simple process without opening the packaging container.

[Brief description of drawings]

FIG. 1 is a perspective view of a packaging container according to a first embodiment of the present invention.

FIG. 2 is a development view of the inner surface of the peripheral wall portion.

FIG. 3 is an enlarged view of a P portion of FIG.

FIG. 4 is an enlarged cross-sectional view taken along the line AA of FIG.

5 is an enlarged cross-sectional view taken along the line BB of FIG.

6 is an enlarged cross-sectional view taken along the line CC of FIG.

FIG. 7 is an enlarged perspective view of a curved portion of a peripheral wall member.

FIG. 8 is an enlarged perspective view of a joint portion of peripheral wall members.

FIG. 9 is a perspective view of an end closure member.

FIG. 10 is a perspective view when the peripheral wall member is separated by a cutting rule for separation.

FIG. 11 is a perspective view of a packaging container according to a second embodiment.

FIG. 12 is a perspective view of a packaging container according to a third embodiment.

FIG. 13 is a perspective view of a joint portion of a peripheral wall member of a modified example.

[Explanation of symbols]

1 Packaging Container 2 Peripheral Wall Member 3 End Closing Member 5 Paper Blank 7 Printing Sheet 9 Separation Ruled Line 10 Curved Push Rule 11 Curved Push Rule Group 17 Transparent Window 21 Packaging Container 31 Packaging Container

Claims (7)

[Claims] 1. A peripheral wall member formed by winding, curving or bending a paper blank in a tubular shape, and a metal or synthetic resin end closure attached to one or both ends of the peripheral wall member. A packaging container comprising a member, and a fragile portion that can be broken by hand is provided on substantially the entire circumference of the peripheral wall member near the end closing member. 2. The packaging container according to claim 1, wherein the fragile portion is a cutting rule for separation cut on the inner surface of the peripheral wall member. 3. The packaging container according to claim 2, wherein a part of the separating ruled line is cut deeper than the rest. 4. The peripheral wall member is formed by bending a paper blank into a rectangular tube shape, and each curved portion of the inner surface of the peripheral wall member is formed by a plurality of bending push lines or bending cut lines. 2. The packaging container according to claim 1, further comprising a group of pressed ruled lines or a group of curved cutting lines. 5. The mutual spacing of a plurality of bending creases or bending creases is narrow at the center of the bending crease group or bending crease group and wide at the left and right portions. Packaging container. 6. The packaging container according to claim 1, wherein the paper blank is provided with a printing surface on the outer surface before being rolled, curved or bent into a tubular shape. 7. The transparent window is provided on the peripheral wall member.
The packaging container described.