WO1994002365A1

WO1994002365A1 - Container and method for manufacturing the same

Info

Publication number: WO1994002365A1
Application number: PCT/JP1993/001030
Authority: WO
Inventors: Takatoshi Kiyooka
Original assignee: Nihon Chikken Kabushiki Kaisha
Priority date: 1992-07-24
Filing date: 1993-07-23
Publication date: 1994-02-03

Abstract

A method for forming a container such as a tray comprising the steps of cutting and splitting a bamboo stem (1) along its axial direction into a plurality of pieces thereof to thereby form a number of elongate bamboo members (4), joining said elongate bamboo members (4) so as to form a laminated bamboo plywood member (5), cutting said laminated bamboo plywood member (5) into thin bamboo sheets (6), and forming a container such as a tray from bamboo sheets (6) by using appropriate means such as pressing, cutting and joining. A container so formed is constituted by bamboo sheets (6) and comprises dense and coarse fiber portions of bamboo which are arranged in an alternate fashion. A reinforcing sheet (10) may preferably be bonded to at least one of the front and back sides of a bamboo sheet (6). In addition, in a case where a reinforcing sheet (10) is used, it is possible to achieve a strength needed for a container even if a wood sheet is used in place of a bamboo sheet. (6).

Description

Description Container and its manufacturing method

The present invention relates to a container and a method for producing the container,

Since the beginning, bamboo containers are made by manually knitting bamboo, as represented by bamboo baskets. Although this type of bamboo container has a unique texture as a folk craft, it is not suitable for mass production, and there are problems such as passing water through its stitches. Not in. On the other hand, many containers, such as food trays, are required to be used as little as possible from the viewpoint of environmental protection, such as the power of synthetic resin and the difficulty of processing. On the other hand, wood and paper can be easily incinerated, but from the viewpoint of preserving forest resources, it is not preferable to use wood and paper for mass consumption. In the case of wood, if the length is increased, the strength is reduced, and the strength of the entire container is also reduced.

Accordingly, the first and third inventions of the present application are containers made of bamboo, which are easily incinerated and do not cause confinement of forest resources, and are suitable for use as various containers including food trays. No container will be provided.

The second invention of the present application is to provide a method for mass-producing the bamboo container according to the first invention.

Further, the fourth invention of the present application aims to provide a container whose main capital is constituted by bamboo and / or wood, and which can satisfy various requirements such as strength, water resistance and printability. I do. Disclosure of the invention

The present invention provides a container having the following configuration and a method for manufacturing the same in order to solve the above-mentioned problems.

The first invention of the present application provides a container having the following configuration.

The main capital of the containers 7 and 8 is composed of a bamboo sheet 6 in which a plurality of narrow bamboo bamboo pieces 6 ′ are bonded in the width direction. In more detail, each of the H bamboo pieces 6 'of this container 7 and 8' power! It has a number of fibers extending in the hand direction, and the density of the fibers varies in the width direction of the strip 1 '. In this container, the main part of the container is composed of a bamboo sheet 6 in which 竹 t-number narrow bamboo ¾bamboo pieces 6 ′ are bonded in the width direction. However, storing fresh food and other goods does not cause problems such as water leakage. Moreover, bamboo has strong antibacterial and antifungal properties, and can maintain the freshness of food longer than other materials. It has a large number of fibers that extend, and the density of this fiber varies in the width direction of the bamboo pieces. It will be coordinated. Therefore, in the portion where the fiber density is low, the permeability of the container can be increased, and in the portion where the fiber density is high, the strength of the container can be increased. by being manipulate returned, Ru der those able to provide a container which combines the strength as moderate breathability and containers _β

A second invention of the present invention provides a method for manufacturing a container having the following configuration. First, the bamboo 1 is cut and divided into a plurality of pieces along the direction of the chain to form many long bamboo materials 4, and these long bamboo materials 4 are joined to form a laminated bamboo plywood material 5. The bamboo sheet 4 is formed by cutting the bamboo layer plywood material 5 into pieces, and the bamboo sheet 4 is formed by appropriate means such as breathing, cutting and joining. _Β that is formed into a container shape

Since bamboo 1 has a knot and is hollow, it cannot obtain a sheet with a large surface like wood. Also, preparing a plurality of narrow bamboo pieces 6 'made of bamboo and bonding them in the width direction is troublesome and is not suitable for mass production. Therefore, the bamboo 1 is divided into a plurality of pieces along the direction to form a large number of long bamboo materials 4, and the long bamboo materials 4 are joined to form a bamboo laminated plywood material 5, which is then thinly cut. In addition, a sheet having a large area can be obtained, and a sheet in which a plurality of narrow bamboo bamboo pieces 6 'are bonded in the width direction can be efficiently mass-produced. ,

A third invention of the present invention provides a container having the following configuration.

The side surface of the container 9 is made of a long bamboo material 4 made of narrow bamboo. On the inner surface side of the bamboo material 4, vertical shafts 93 of the iSS number are formed, and the S bamboo material 4 is bent at the length of the vertical groove 93.

In this container, an appropriate number of vertical grooves 93 are formed on the inner surface side of the long bamboo material 4 constituting the side of the container, and the long bamboo material 4 is bent at the portion of the vertical groove 93 to form the container. The inverted surface can be easily manufactured with bamboo. Furthermore, even if articles such as fresh foods are stored in this container, there is no occurrence of water leakage or the like. In addition, bamboo has strong antibacterial and antifungal properties, and can keep foods longer than other materials.

The fourth invention of the present IS provides a container having the following configuration.

The main part of this container is composed of a first sheet 6 made of bamboo and / or wood, and a second sheet 10 made of paper and / or synthetic resin. The second sheet 10 is provided on at least one of the surface and the surface of the first sheet 6.

In this container, it is made of bamboo and / or wood which is relatively weak The first sheet 6 is reinforced by a second sheet 10 made of paper and / or synthetic resin, so that the strength of the container can be increased. Also, paper and synthetic resin are easier to shave than bamboo and powder, and printing on them can enhance the design effect of the container. Further, by making the second sheet 10 made of water-resistant paper or synthetic resin, it is possible to increase the water resistance of the container, and to provide the bamboo or wood with insufficient properties. Can be done. Simple sharps of the drawing

FIG. 1 is an explanatory view of a process for producing a bamboo sheet according to one embodiment of the present invention.

FIG. 2 (A) is an enlarged view of a main part of a bamboo sheet according to an embodiment of the present invention, and FIG. 2 (B) is an explanatory view showing a modified example thereof.

Fig. 3 (A) is an explanatory view of a method of forming a container according to an embodiment of the present temple invention, and (B) is a perspective view of the container formed by the same method.

FIG. 4 is an enlarged view of a mold used in the molding method.

FIG. 5 (A) is an explanatory view of a method for forming a container according to another embodiment of the present invention, and FIG. 5 (B) is a perspective view of the container formed by the method.

Fig. 6 (A) is a perspective view of a container of still another example H, (B) is a developed perspective view of the container, and (C) is a required longitudinal sectional view of the container. «6. (Best mode for carrying out the invention) Ϊ

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First, FIG. 1 is an explanatory diagram of a process for manufacturing a bamboo sheet. As shown in Fig. 1 (A), the bamboo 1 is cut to a convenient length. As the type of bamboo to be used, appropriate bamboo such as mushroom, madatake, and bee can be used, but those having a larger number are preferred from the viewpoint of productivity.

Next, as shown in Fig. 1 (B) and (C), bamboo 1 is divided into convenient numbers (five in this embodiment) in the circumferential direction.

Next, as shown in FIG. 1 (D), while removing the bamboo node 2, the inner peripheral surface 3 is cut into a ½ plane, and the length a is set to a predetermined length (for example, 100 0 m »), the width b is set to a predetermined width (for example, S5 mm).

Next, as shown in FIG. 1 (E), the outer periphery of the bamboo is cut to be processed into a rectangular long bamboo material 4 having a predetermined length a and a predetermined width b. The thickness of the bamboo may vary depending on the characteristics of the bamboo. Furthermore, as described below, the long bamboo material 4 is used for manufacturing a bamboo-ply plywood material 5 by multiplying these layers, and if such a seed layer is possible, its sectional shape It is possible to change the shape to a slightly curved shape in addition to a rectangle.

Next, as shown in Fig. 1 (F), a large number of the long bamboo materials 4 are hired to produce a laminated bamboo plywood material 5. More preferably, the surface 4 1 of the long bamboo materials 4 is manufactured. The surface and the surface 42 are joined with an adhesive and by applying an undue pressure if necessary. For this seed layer, a conventional wood laminating machine can be used.表面、 The surface 41 of the long bamboo material 4 is a portion of the outer periphery of the bamboo 1 which is troublesome, and the rear surface 42 is a position of the inner periphery of the bamboo 1 which is troublesome. In FIGS. 1 (E) and 1 (F), reference numeral 43 denotes a side surface of the bamboo material 4, and reference numeral 44 denotes the same end surface. The bamboo fiber extends in the longitudinal direction (X direction).

Finally, as shown by the dotted line in FIG. 1 (F), the bamboo laminated plywood material 5 is sliced in the order of 0.2 to 1.0 mm from the top surface of the figure to obtain a bamboo sheet. Get 6 Thus, this bamboo sheet 6 is composed of strips of bamboo bamboo 6 'obtained by slicing each long bamboo material 4 and connected in the width direction (y direction). As shown in an enlarged manner, the bamboo fiber extends in its longitudinal direction (X direction), and the density of the fiber changes in its width direction (y direction). Specifically, the surface 41 side is dense, and the back surface 42 side is rough.

Using the bamboo sheet 6 obtained by the above method, three containers are manufactured. There are two types of manufacturing methods, one of which will be described first with reference to FIG.

In this method, a thermocompression press is applied. First, a sheet 6 made of bamboo is subjected to steam or heat treatment to give temperature and humidity. Then, the bamboo sheet 6 after this treatment is arranged between the sliding mold 11 and the receiving mold 12 shown in FIG. 3 (A), and the action mold 11 is slid downward. »Then, pressure is applied to form the desired shape, and the tray-shaped container 7 shown in FIG. 3 (B) is completed. At this time, it is preferable to coordinate the heat to at least one of the two molds 11 and 12 and to heat at the same time as pressurization. Here, bamboo is softer and more easily bent than wood due to heat, and it can be shaped into a seed * shape due to this property. Therefore, more preferably, when arranging the heat source to at least one of the two molds 11. 12, the temperature of 11 a. 12 a corresponding to the fold line at the time of molding is used. If the temperature is set higher than other temperatures, a good fold can be formed. Further, as shown in FIG. 4, a ridge and a groove may be formed in each of the folds 11a and 12a. In this embodiment, the shape of the conventional food tray is used. However, the shape can be appropriately changed by changing the shape of the mold.

Another way is to use cutting, bending and joining means, This method will be described with reference to FIG. First, as shown in FIG. 5 (A), a cutout line 21 and a bent line 22 are formed on a bamboo sheet 6. The lines 21 and 22 can be formed using a press device that cuts and bends the paper, and forms a fold at the same time as the die is cut. In this case, the outer shape line 23 may be punched out during the circumference.

Next, as shown in FIG. 5 (B), the folding line 22 is folded, and the overlapped portion is fixed by a suitable fixing means such as a fastener 24 or an adhesive, and the tray-shaped container 8 is removed. Finalize. It should be noted that the rubbing of the bending can be performed using a mold as shown in FIG.

As described above, the containers 7, 8 obtained by the above-described method are formed by bonding a large number of pieces of bamboo bamboo 6 'in the width direction. In each cocoon bamboo piece 6 ', the bamboo weave extends in the longitudinal direction (X direction), and the density of the fiber varies in the width direction (y direction). the surface 4 has 1 side becomes dense,塞面4 2 side is a rough (FIG. 2 (a) refer) Te _β従Tsu in density of樾維low capital component, the container vent In areas where the density of textiles is high, the strength of the container can be increased. However, it was possible to provide a container having both appropriate air permeability and strength as a container. Moreover, since the bamboo pieces 6 'are bonded by the above-mentioned seed layer, there is no danger of water leakage. Therefore, the bamboo satisfies the necessary conditions as a raw food tray container. The freshness of the food can be kept long due to its antibacterial and antibacterial properties. In addition, the use of bamboo, which is easy to incinerate and has a short growing cycle, can also solve the problem of dead ports in forest resources.

In the above embodiment, the tray-shaped container is used, but the shape and size of the container can be changed as appropriate. In addition, as shown in FIG. 2 (B), it is also possible to attach a reinforcing sheet 10 to one surface of a bamboo sheet 6. In the above-mentioned manufacturing process, the bamboo laminated plywood 5 is sliced to obtain a bamboo sheet 6 in the above-described manufacturing process. Etc., and may be dried if necessary. After this attachment, it may be processed into the shape of a container in the same process as in the case of the bamboo sheet 6 alone.

The material S of the reinforcing sheet 10 may be selected from paper such as water-resistant paper, a sheet made of synthetic resin or a film made of synthetic resin, a simple substance such as a metal stay, or a composite material thereof according to the purpose. .

The reinforcing sheet 10 may be provided on the middle side of the bamboo sheet 6, may be provided on the back side, or may be provided on both sides. For example, the inner surface of the container (the surface that is in direct contact with the appropriate collected articles such as food) is made to appear as a bamboo sheet 6 so that the antibacterial and force-resistant properties of the bamboo directly act on the food. A reinforcing sheet 10 is arranged on the outer surface of the container to prevent water from flowing out of the container for a long period of time, or by printing on the reinforcing sheet 10 to design the appearance of the container. Can be enhanced.

Further, when the reinforcing sheet 10 is arranged on the inner surface of the container, it is possible to enhance the design property of the container when the container is collapsed.

Furthermore, a wooden sheet made by slicing and joining wood is inferior to bamboo sheet 6 in strength, which is inconvenient as a container. However, since the overall strength is improved, it can be sufficiently used as a container.

FIG. 6 shows still another embodiment, in which (A) is a perspective view of the container 9 of the present embodiment, (B) is a required perspective view showing an expanded state of the container, and C) is the required longitudinal section 121 of the container, _β The container 9 has a side surface 91 and a bottom surface 92. The side surface 91 is manufactured by using the long bamboo material 4 described above, and a vertical groove 93 shown in FIG. 6B is formed by cutting at four places of the long bamboo material 4. By bending from 3, a rectangular side surface is formed. In this embodiment, the flutes 93 are triangular shaped at about 90 degrees in a plan view so that they can be easily bent at right angles. It can be changed at any time. Further, the depth of the flutes may be slightly smaller than the thickness of the bamboo material 4, but the value may be appropriately set in consideration of the strength required for the container and the workability of folding.

Further, in the long bamboo material 4, a lateral groove 94 is formed by cutting near the lower end thereof. As shown in FIG. 6 (C), the horizontal clearing 94 is for inserting and supporting the bottom surface 92, and is formed over the entire length of the long bamboo material 4.

Next, the bottom surface 92 may be appropriately formed of a material K. In this embodiment, the bamboo sheet 6 is formed into a quadrangular shape having a predetermined size, or the bamboo sheet 6 is formed. It is formed by using a sheet to which a reinforcing sheet 10 is attached.

To assemble, 苌 Insert the bottom surface 9 2 into the lateral groove 9 4 of the bamboo material 4, bend it at the length of the vertical groove 9 3, and finally abut the two ends of the long bamboo material 4, and use the fixing bracket 9 5 It is an area. This fixing may be performed by using a fixing means such as welding, or the both ends of the long bamboo material 4 may be overlapped. Also, the bottom surface may be simply inserted without being inserted into the lateral groove 94 of the bamboo material 4. It may be stopped simply by bonding. In addition to the container body, the lid and top of the container can be manufactured with the same configuration.

The first and third inventions of the present application are containers that are easy to incinerate and do not cause forest resource depletion, and are used as various containers including food trays. Thus, it has been possible to provide a bamboo container suitable for use.

The second invention of the present invention is to provide a method for mass-producing the bamboo container.

Further, the fourth invention of this BS is to provide a container whose main part is constituted by bamboo and / or wood, and which can satisfy various requirements such as strength, water resistance and printability. Was made. '' Industrial applicability

The present invention provides a bamboo or wooden container, and can be used in the distribution industry and the container manufacturing industry.

Claims

The scope of the claims

1. In containers (7) and (8) for storing appropriate items such as food,

The main part of this container consists of a bamboo sheet (6) in which a plurality of narrow bamboo bamboo pieces (6 ') are glued in the width direction.

Each rose bamboo piece (6 ') has a number of fibers extending in its hand direction, and the density of the fiber varies in the width direction of the bamboo piece (6').

2. The bamboo (1) is cut into multiple pieces along the axial direction and divided to form a number of long bamboo materials (4), and these lit materials (4) are joined to form bamboo seed plywood (5). ), And the laminated plywood material (5) is cut into pieces to form a bamboo sheet (6). The bamboo sheet (6) is used as a convenient means for breathing, cutting, joining, and the like. A method for producing a container, wherein the container is formed into a more appropriate container shape.

3. In the container (9) that stores food and other convenience goods,

The sides of this container consist of narrow bamboo long bamboo material (4),

An appropriate number of vertical grooves (93) are formed on the inner surface side of the long bamboo material (4), and the long bamboo material (4) is bent at the vertical groove (93).

4. In containers (7) and (8) for storing convenience goods such as food,

The main capital of this container consists of a first sheet (6) composed of bamboo and / or wood, and a second sheet (10) composed of paper and / or synthetic resin. ), Wherein the second sheet (10) is seeded on at least one of the front surface and the back surface of the container.