JP2995212B2 - Container made of sheet-like material, manufacturing method and manufacturing apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a container and packaging technology.

[0002]

2. Description of the Related Art In general, containers used in homes, retail stores, office environments, etc., have a garbage bin for accommodating various kinds of articles such as garbage such as paper waste, miscellaneous goods, confectionery and fruits, according to their respective uses. Various types of containers such as trays and cans are used. These containers require large strength depending on the use or environment of use, or are made of wood, metal, plastic, or the like because of their aesthetic decoration effects. For example, a garbage bin for storing garbage at home has been made of a metal or plastic container or a knitted basket. In addition, when selling food such as confectionery and fruits, put it in a fixed amount and display it at the storefront or sell it as it is, as a relatively inexpensive, lightweight, strong and disposable container Plastic cases and trays are used.

[0003]

Incidentally, these containers, in addition to those having sufficient strength and decorative effect as described above, are inexpensive and disposable, and in that case, are treated harmlessly as waste. There is also a demand for a material that is easy to use. That is, at home, trash cans that are generally used are likely to become unsanitary inside the container while they are in use, and their cleaning is troublesome, and can be disposable due to the need for hygiene considerations. Therefore, vinyl bags are stored inside the garbage can as an inner bag, and when the inner bag is full of waste, the inner bag is taken out and discarded together with the contents. Was. Prior to use, containers for displaying and selling foods such as confectionery can also be stacked and many containers can be transported and accumulated, and must be made of a lightweight, inexpensive, disposable material after sale. Further, if there is a foldable container which can temporarily store miscellaneous goods and be folded when not in use, it can be widely used for various purposes.

[0004] As described above, these containers are inexpensive and require a certain degree of strength depending on the articles to be housed. In order to make them disposable, they are easy to dispose of as waste and are toxic. It is required that the incinerator be made of a material that does not cause a substance or damage the incinerator. Further, in order to make the container freely foldable, it is necessary to have a certain structure. However, it is difficult to satisfy all of these requirements with wooden, metal, and plastic products as described above. For this reason, attempts have been made to use a container formed three-dimensionally from a sheet-like material such as paper. Because there is no
There is a risk that the container may be deformed at the time of use, so that there are drawbacks such that only a small one can be accommodated according to the thickness of the material, or only an extremely light one can be accommodated. With these materials, it is not sufficient to simply form a cylindrical or rectangular prism and provide a bottom, and it is necessary to reinforce the side walls and the bottom, particularly the bottom, of these containers.

[0005]

SUMMARY OF THE INVENTION The present invention is to provide a container capable of being self-supporting and foldable by repeatedly and alternately bending even a thin sheet-like material such as paper. In particular, the bottom structure is
The object of the present invention is to solve the above-mentioned problem by focusing on the fact that by folding the bent structure forming the side wall, it is possible to have the same strength as the beam structure. That is,
A sheet-like material such as paper is repeatedly and alternately folded in parallel at a fixed width, and a certain length is folded from one end thereof substantially at a right angle to the fold so that the crests and valleys of the fold are reversed. By joining both ends parallel to the folds of the folded pieces, a container having a repeatedly formed folded surface as a bellows-like side wall and a folded portion as its bottom is obtained.

Further, in order to bend a sheet material such as paper into the above-mentioned shape, the thin plate material can be alternately bent in parallel with a constant width, and a constant length from one end thereof is substantially perpendicular to the fold. When a plate is formed in which the crests and valleys are turned upside down and turned back to be similarly alternately foldable, and the material sheet is pressed against the valleys and crests of the bent portion of the plate to bend and fold the plate. A pressing tool for transferring the bent shape of the plate to the material sheet,
Equipment for manufacturing containers made of sheet-like material.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on examples with reference to the drawings. In FIG. 1, reference numeral 1 denotes a paper material having a stiffness comparable to newspaper advertisement paper. The upper part in the figure is folded so that the ridges 2 and the valleys 3 are alternately repeated, and a certain length from one end (the lower end in the figure) is inverted between the valleys 3 and the ridges 2. It is folded back at the folding section 4. In this manual folding method, it takes time and effort to turn the folded back. However, using a tool as shown in FIG. 2 makes it easy to add a folding habit. That is, in FIG. 2, reference numeral 5 denotes a thin sheet-like plate material such as cardboard or plastic, and a folding habit portion 6 is provided on the plane thereof so that the peaks and valleys are folded along the folds. Instead of adding a folding habit, a portion corresponding to each of the peaks and valleys may be connected by a hinge or spelled so as to be foldable.

A sheet-shaped material is placed on the plate material, and a pressing member having substantially the same size and structure is placed on the sheet-shaped material, pressed to be integrated, and peaks and valleys are alternately formed according to the folding habit. Fold and fold. After that, when the folded tool is opened and the sheet material is taken out, the sheet is creased as shown in FIG. When this is wound around as shown in FIG. 4 and both ends 7 are adhered, a container 8 as shown in FIG. 5 is obtained. The side wall 10 can be self-supported due to the folded structure, and the bottom 11 has a folded structure so that it has a structure just like a beam. It doesn't fall or fall out. The bottom center portion is a small opening without closing as it is, but there is no problem in strength. However, it is usually desirable to apply the patch in an appropriate adhesive tape or the like so that the opening does not spread outward. After folding the sheet material and folding it as it is, Fig. 6
The folded piece 9 as shown in FIG. If both ends are used as adhesive parts, if a pressure-sensitive adhesive is applied or a release paper is stuck on an adhesive such as an adhesive, and placed, a large number of folded pieces will be stacked and shipped, transported, and required. Can be stored until.

Means for imparting a folding habit to the sheet material is not a hand tool as described above, but is an industrial means. The sheet may be folded from one end of the sheet-shaped material or simultaneously at an appropriate range simultaneously by means for holding the positions where the valleys are to be inverted and bent.

[0010]

The side wall and the bottom thus formed are
It has sufficient strength as a container, and when it is used for ordinary household refuse, it is possible to reduce the possibility of the bottom coming off. In addition, by adopting such a folded structure, the structure is simplified, and the side wall and the bottom can be integrated with each other during the manufacturing, so that there is an advantage that the manufacturing is simple and the manufacturing unit price can be reduced. In addition, such a structure allows the use of inexpensive thin materials, enables the use of disposable materials, and allows the use of paper and the like, which damages the furnace body during incineration, which is a problem in waste disposal. No toxic gas or the like was generated, and it could be made preferable from an environmental problem.
When used as a container, the bellows-shaped side wall of the container has a bent structure and is hardly deformed, and the bottom structure formed by folding the side wall has a strength to prevent deformation together with the folded side wall structure. Even if the container is self-supporting and accommodates a relatively heavy object, the disadvantage that the bottom is deformed and the contents fall out of the container can be eliminated.

Further, since a thin sheet-like material such as paper can be used, it is inexpensive and disposable.
By handling it folded before use, it is compact, convenient for transportation, storage and management without taking up space.Since it can be formed integrally from one sheet of material, the structure is simple And the number of manufacturing steps is small,
Manufacturing costs can also be reduced. Therefore, it is environmentally friendly because it can use inexpensive materials such as paper, and it can be incinerated and does not emit toxic gas for waste disposal.
And a disposable container is made. In addition, the use of the manufacturing tool described in the embodiment makes it possible to easily create a disposable container at home using advertising paper or the like folded into newspapers as a material. Also, if a plant is produced using a stiff sheet-like material, it can be used as a foldable container for multiple purposes.

[Brief description of the drawings]

FIG. 1 shows a sheet material such as paper unfolded and its folds.

FIG. 2 A tool for making a fold on a sheet material

FIG. 3 shows a state in which a creased sheet material is taken out of the tool.

FIG. 4 shows a state in which a folded sheet-like material is erected three-dimensionally.

FIG. 5 shows a state in which the sheet-like material is finished into a container.

FIG. 6 folds the folded sheet-like material,
Shows the folded state

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheet-shaped material 2 Folds / peaks 3 Folds / valleys 4 Folded parts 5 Thin plate material such as plastic 6 Folded parts 7 Adhesive parts (glue allowance) 8 Container 9 Fragment 10 Container side part 11 Container bottom part

──────────────────────────────────────────────────の Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B65D 5/00-5/76 B65D 3/00-3/30 B65D 8/00-8/22 B31B 1 / 00-49/02 B31D 1/00-5/04

Claims (3)

(57) [Claims] 1. A sheet-like material such as paper is bent alternately and in parallel at a constant width, and a certain length from one end thereof is substantially perpendicular to the fold, and the peaks and valleys of the fold are inverted. A container in which the parallel folded ends are joined to form parallel opposite ends so that the alternately folded surface is a bellows-like side wall and the folded portion is the bottom. 2. A sheet-like material such as paper is alternately bent in parallel at a constant width, and a certain length is substantially perpendicular to the fold from one end, and the peaks and valleys of the fold are inverted. A method for manufacturing a container in which a folded piece is formed in such a manner as described above, and the opposite ends of the folded piece are joined to form a bellows-like side wall with the alternately bent surface, and the folded portion is the bottom. 3. The sheet material can be bent alternately and in parallel with a fixed width, and a certain length is folded from one end of the sheet material at a substantially right angle to the crease so that the crests and valleys of the crease are inverted. A plate that can be folded alternately is formed, and the material sheet is pressed against the valleys and peaks of the bent portion of the plate, and the bent shape of the plate is transferred to the material sheet when the plate is folded and folded. An apparatus for producing a container made of a sheet-like material, comprising a means.