JP2000142656A - Manufacture of container made of ultra-thin sheet, and container made of ultra-thin sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the productivity of a container for which a single sliced wooden material of a natural material is used by performing a blanking of an ultra-thin sheet after slicing a wooden material into the ultra-thin sheet, and at the same time, performing a pressing after the ultra-thin sheet is softened in a vapor. SOLUTION: For the natural log of a wooden material 12 which becomes a raw material, a miscellaneous timber or a thinned wood or the like is used, and in order to make ultra-thin sheet from the natural log of the wooden material 12 into a slicing is performed in a slice process 14. Then, a treating process 20 including a blanking to make a required container of the ultra thin sheet, is performed, and in this treating process 20, a blanking process 16 to cut out a specified required dimension, and a cutting process 18 to apply cuttings required for the erecting the side surface sections of a box when a box-shaped container is formed, are performed in order. Then, the ultra-thin sheet is fed to a process 22 wherein the ultra-thin sheet is softened by placing in hot water or a vapor, and the flat sheet woks it easier to form a stereoscopic container in this process. Then, in a press process 24, the ultra-thin sheet is press- bonded by using a forming die in response to the container to be formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing an ultra-thin container and a method of manufacturing various containers from a single sliced wooden material by processing a wooden material into an ultra-thin plate.

[0002]

BACKGROUND OF THE INVENTION Generally, when displaying fresh foods such as fruits, vegetables, marine products, etc. among foodstuffs at a store, in general, fresh foods are taken into consideration from the viewpoint of protection of the goods, appearance and purchase amount. The products are divided into containers made of synthetic resin such as styrofoam or the like or paper, and are used to make them easy for consumers to purchase.

[0003]

When such a conventional synthetic resin or paper container is used, for example, in the case of a synthetic resin container, food taken into the human body directly touches the synthetic resin container. There is a concern about the effects of environmental hormones on the human body, which have been regarded as a problem these days. In addition, the container which became unnecessary after having used article which consumer purchased,
When discarded as combustibles, they will be incinerated at the incineration plant. At this time, the incinerated smoke may emit a bad smell or scatter black smoke, and the smoke may contain substances that have an adverse effect on the human body, and its use may be prohibited in the future. The nature is also high. In addition, incineration of a resin material may damage a furnace wall or a grate of an incinerator due to a high calorific value of the resin during combustion. For this reason, a method of treating it as incombustible is also adopted, but in this case, it will be landfilled. However, even if the synthetic resin material is buried, it remains without being decomposed, and becomes bulky and causes unstable ground.

In the case of paper containers, an adhesive is often used to form the container. When food is put into the container, the components of the adhesive adhere to the food and are taken into the human body, and the human body is removed. There is a concern about the adverse effects on In addition, since paper containers have water absorption, there is a problem in that if water of an article is absorbed, the box is deformed and the function as a container is impaired.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and one object of the present invention is to provide a container made of a natural wood material so that it can be mass-produced without adversely affecting the human body when used. It is an object of the present invention to provide an ultra-thin plate manufacturing method and an ultra-thin plate container which are inexpensive. Another object of the present invention is to prevent the generation of offensive odor or black smoke when incinerating a used container, to generate no particularly harmful combustion gas or the like, and to further damage the incinerator. It is an object of the present invention to provide a method for producing an ultra-thin sheet material container and an ultra-thin sheet material container having a small amount of water.

[0006]

In order to achieve the above object, the present invention provides a first processing step 2 including a step 14 of slicing a wooden material 12 into an ultra-thin plate, and a step of removing the ultra-thin plate.
0 and softening the ultra-thin sheet material in hot water or steam 22
And pressing step 24 for pressing the softened ultra-thin sheet material
And a method for manufacturing the ultra-thin sheet material container 26.

Further, the present invention provides a method of slicing a wooden material 12 into an ultra-thin plate, performing a first treatment including stripping the ultra-thin plate, and then softening the ultra-thin plate in hot water or steam. Further, it comprises an ultrathin sheet container 26 formed by pressing a softened ultrathin sheet material.

[0008]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a flowchart showing a method for manufacturing an ultra-thin sheet material container according to the present invention.
2, a step of slicing the ultra-thin sheet into ultra-thin sheet material, a first processing step 20 including a step of removing the ultra-thin sheet material, a step 22 of softening the ultra-thin sheet material in hot water or steam, And a pressing step 24 of pressing

According to the production method of the present invention, a natural log is sliced into, for example, a straight grain or a grain parallel to the longitudinal direction of the trunk to produce a single sliced ultrathin sheet material, which is subjected to a predetermined processing step. A plurality of constituent members are formed into a single unitary container without bonding or joining. As the natural log of the wood material 12 as a raw material, general miscellaneous wood or thinned wood can be used regardless of cypress wood or cedar wood, and the wood wood may be raw wood or dried. The shape may be a substantially columnar shape, a processed prism, or the like while retaining the original shape of the raw wood. When processing is performed in the next slicing step, the diameter of the wood material can be processed up to about 50 cm.

In order to make this natural wood of wood into an extremely thin plate, slicing is performed in a slicing step 14. When slicing a wood material into an ultra-thin plate, a long ultra-thin plate having a straight grain or a grain of wood can be obtained by slicing the wood material 12 in parallel with the longitudinal direction of the trunk. In addition, by cutting in a rotary lace or the like, the ultra-thin sheet material can be formed not only from the trunk of the tree but also from the branch having a small diameter.
If the wood is sliced in the direction of cutting, a short rectangular ultra-thin plate can be formed in which the annual rings become ring-shaped grain. The thickness of the ultra-thin plate material may be, for example, about 0.05 mm, may be made thinner, or may be made thicker as necessary. The plate material can be adjusted to any thickness, and an ultra-thin plate material capable of forming a container of any thickness can be provided as needed.

[0011] Next, a first processing step 20 is performed, which includes stripping for making a required container from the ultrathin sheet material. In this embodiment, a case where a hollow box-shaped container having an open upper surface as shown in FIG. 3 will be described. In this embodiment, the first processing step 20 includes a plate removing step 16 for cutting out a predetermined required size to form a container made of an ultra-thin plate, and a step for starting up a side portion of a box when a box-shaped container is formed. Is provided with a cutting step 18 for processing a notch required for the cutting. In the board removing step 16, a vertical or horizontal dimension of a rectangular or square planar shape required for a predetermined container shape is determined and cut to cut out a predetermined ultrathin plate material. When mass-produced, the required number can be laminated and the board can be cut at the same time. Next, a cutting step 18 necessary for forming a box-shaped container is to make a cut when the wall surface or the like constituting the container intersects linearly so that the intersection can be easily assembled. A cut is made at a predetermined position so as to match the shape of a predetermined container and be assembled. Also, when assembling into a box shape by forming a bent portion like a box-shaped container, a half-cut cut is formed at a predetermined position or a fold is formed using a pressing die to facilitate bending at the time of assembly. The cut portion and the creased portion are temporarily assembled to have a container shape immediately before the pressing step.

The ultra-thin sheet material that has been cut out is softened before being sent to the pressing step, so that the ultra-thin sheet material can be easily processed when pressed. The step 22 of placing the ultra-thin plate material in hot water or steam to soften it is a process of facilitating the formation of a flat plate material into a three-dimensional container by absorbing and softening the ultra-thin plate material at high temperature. By absorbing the water into the cell wall of the tissue structure of the wood material, the connection structure in the cell wall is loosened and easily deformed, so that the plate material absorbs the water and softens. To soften the ultra-thin plate material to have a predetermined flexibility, for example, using a steaming pot, if the ultra-thin plate material is about 0.1 mm thick, in hot water, at a temperature of 100 degrees within 1 minute Also, if it is in steam, the ultra-thin sheet material can be softened at a temperature of 120 degrees within 2 minutes. If the thickness of the ultra-thin plate becomes thicker, the conditions may be adjusted accordingly, and even a thickness of about 10 mm can be softened to a plate having the required flexibility.

Next, a pressing step 24 is a step of forming a softened ultra-thin plate material into a specific container, and pressing the thin plate material into a container shape by using a forming die corresponding to the container to be formed. Press forming correspondingly. In the case of pressing a box-shaped container, the bent portion is bent as shown in FIG. The ultra-thin sheet material to be formed is immediately set in a forming mold in a softened state immediately after the completion of the previous process with moisture still attached, and the set ultra-thin sheet material is pressurized at a predetermined pressing force to a predetermined pressure. Hold for a time to form the container. When the thickness of the ultra-thin plate is about 0.1 mm, the holding time is about 3 seconds, and the plate is pressed into a predetermined shape.
The ultra-thin sheet material container 32 shown in FIG. 3 is completed by removing the container of the ultra-thin sheet material set in the forming mold from the mold after a predetermined holding time has elapsed. If the sliced ultra-thin plate material is extremely thin, a desired container shape can be formed only by pressing with a general forming die. If the thickness of the board is thick or hardwood, use a hot press, electric heat press, steam press, etc. to heat the forming mold and the surrounding temperature or press in a state where high-temperature steam is injected Is also good. In this case, the sheet material can be dried instantaneously simultaneously with the press forming, and the production time until the container is completed can be shortened. When it is desired to partially increase the strength of the completed ultra-thin sheet material container as necessary, it may be configured as an ultra-thin sheet material container in which the same ultra-thin sheet material is inserted at the bottom of the container for reinforcement.

Although the above description has been given of a box-shaped manufacturing method, this manufacturing method can also form a dish-shaped container as shown in FIG. Similarly, in the case of FIG. 4, a slicing step of the plate material as described above, a first processing step, a step of softening the ultra-thin plate material in hot water or steam, and a press for pressing the softened ultra-thin plate material Process, but in that case,
In the first processing step, the notch step required for forming the box shape is unnecessary, and the plate material can be simply sliced, and the next step can be carried out only by the stripping step. It is possible to obtain. Further, the shape of the container is not limited to a box shape or a dish shape, but can be variously formed into a polygonal, elliptical, container having a certain figure, or the like. By automating the above steps, a container that can be mass-produced and that is integrally formed using one inexpensive ultrathin plate can be manufactured.

[0015]

As described above, according to the method of manufacturing an ultra-thin sheet material container of the present invention, the first processing including the step of slicing a wood material into the ultra-thin sheet material and the step of removing the ultra-thin sheet material is performed. A step of softening the ultra-thin sheet material in hot water or steam,
By pressing the softened ultra-thin sheet material, a container can be constructed using a single sliced wood material of a natural material, so that it does not cause adverse effects on the human body when used, and can be mass-produced. It can be manufactured at low cost. In addition, when used containers are incinerated, they do not generate odors or black smoke, do not generate combustion gas that is particularly harmful to the human body, and do not damage the incinerator when the containers are incinerated. .

Further, according to the ultra-thin sheet material container of the present invention, a wooden material is sliced into an ultra-thin sheet material, the first processing including stripping of the ultra-thin sheet material is performed, and then the ultra-thin sheet material is cut in hot water or steam. Since the sheet material is softened and the softened ultra-thin sheet material is pressed, an ultra-thin sheet material container can be formed from a natural wood material, and the container can be used without fear of adverse effects on the human body. In addition, the disposal of used containers does not generate odor or black smoke even when incinerated, and does not emit combustion gas particularly harmful to the human body.
Further, the container can be formed in a box shape, a dish shape, or other various shapes, and the grain and color are visually appealing in design, so that they can be widely used in various fields on a daily basis.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a manufacturing method of the present invention.

FIG. 2 is a perspective view showing a state where the box-shaped container is temporarily assembled.

FIG. 3 is a perspective view of a completed box-shaped container.

FIG. 4 is a perspective view of a completed dish-shaped container.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 Wood material 14 Slicing process 20 1st processing process 22 Process of softening in hot water or steam 24 Press process 26 Ultra-thin sheet container

Claims (2)

[Claims] 1. A step of slicing a wood material into an ultra-thin plate, a first processing step including a step of removing the ultra-thin plate, a step of softening the ultra-thin plate in hot water or steam, and And a pressing step of pressing the ultra-thin plate material. 2. A wooden material is sliced into an ultra-thin plate, a first treatment including stripping of the ultra-thin plate is performed, and then the ultra-thin plate is softened in hot water or steam and further softened. An ultra-thin sheet container formed by pressing an ultra-thin sheet material.