JPH11291210A - Production of board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a board of low production costs which does not generate toxic gas in incineration. SOLUTION: The method comprises: the first step in which food residual slurry 11 such as raw tofu refuse, coffee grounds, and shochu lees, a pulp raw material 12 such as used paper, and sodium alginate are placed in a kneader to be kneaded, the second step in which the kneaded product 15 produced in the first step is placed in a molding mold 16 to form a board, the third step in which the board prepared in the second step is placed in a calcium chloride solution tank 17 to be solidified, and the fourth step in which the solidified product 18 obtained in the third step is dried.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a plate material which can be produced relatively inexpensively and easily burned by using raw food residues such as raw okara, coffee residue and shochu residue as raw materials. It relates to a manufacturing method.

[0002]

2. Description of the Related Art In the process of producing tofu and canned coffee, okara and coffee residue are generated as residues, which have little economic value and are not effectively used as resources. Was. Therefore, in order to effectively use okara and the like, a method for producing a synthetic plate using okara as a raw material has been proposed. In this method, the okara discharged after the production of tofu is heat-dried to evaporate the water to make it into a powder form, to which a resin or a chemical is added to make a paste form. This paste form is put into a mold and pressed or injection-molded. And heat-process it into a plate shape.

[0003]

However, in the above-mentioned conventional method, since press molding is performed using a mold, there is a problem that a large-sized apparatus is required and the cost is increased. Further, depending on the resin or chemical used, toxic gas may be generated and may not be finally incinerated. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a method of manufacturing a plate material that does not generate toxic gas even when incinerated and has a low manufacturing cost.

[0004]

According to the present invention, there is provided a semiconductor device comprising:
The production method of the plate material described above is a first step in which a kneading machine is mixed with raw okara, slurried food residue such as coffee scab, shochu scab, pulp raw material such as waste paper, and sodium alginate and kneaded. A second step of putting the kneaded product produced in the first step into a mold and shaping it into a plate shape;
A third step of putting the plate-like material having a predetermined shape in the step into a calcium chloride liquid tank and curing it with water; and a fourth step of drying the plate-like cured material formed in the third step. ing. According to a second aspect of the present invention, in the production method of the first aspect, in addition to the slurry-like food residue, the pulp raw material, and the sodium alginate, a short fiber component is added to the kneader. It has been turned on at the same time. Claim 3
The method for producing a plate material according to claim 1 or 2, wherein the pulp material is 50 to 150 parts by weight, and the sodium alginate is 100 parts by weight of the slurry-like food residue. It contains substantially 1 to 3% by weight, and the sodium alginate is added in the form of an aqueous solution. The method of manufacturing a plate according to claim 4 is the method of manufacturing a plate according to any one of claims 1 to 3, wherein the surface of the plate manufactured in the fourth step is subjected to a coating treatment on a surface thereof. It is used as a building material including wood.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. Here, FIG. 1 is an explanatory view of a manufacturing process of a manufacturing method of a plate material according to one embodiment of the present invention.

As shown in FIG. 1 (A), raw okara 11 which is an example of slurry-like food residue, waste paper 12 which is an example of pulp material, and aqueous sodium alginate solution 13 are put into a kneader 10. Knead. At this time, raw okara 11
Contains 80 to 85% of water, the used paper 12 is appropriately beaten (pulp-like), and the sodium alginate aqueous solution 13 is a 2% aqueous solution. The input amount is 100 parts by weight of raw okara 11 and 100 parts of waste paper 12
Parts by weight of sodium alginate aqueous solution 13 are used in a proportion of 100 parts by weight. Here, sodium alginate aqueous solution 13
The amount and / or concentration of sodium alginate can be changed so that the content of sodium alginate is 1 to 3% by weight based on 100 parts by weight of the slurry-like food residue. Here, when the amount of sodium alginate is small, the degree of curing is poor, and when it is large, it is useless. Waste paper 12 is 50-15
It can be increased or decreased in the range of 0 parts by weight, in this case, 50 parts by weight.
If the amount is less than 150 parts by weight, the strength decreases, and if the amount exceeds 150 parts by weight, the curing degree is deteriorated. However, the present invention is not limited to these figures. In FIG. 1A, reference numeral 14 denotes a stirrer (the above is the first step).

Next, as shown in FIG. 1 (B), the kneaded material (dough) 15 in the form of a slurry produced in the above step is put into a molding die 16 to adjust its shape. Therefore, when a rectangular plate is to be manufactured in plan view, a rectangular (rectangular)
When it is intended to produce a circular plate in plan view using the above mold, a round (cylindrical) mold is used. The amount of kneaded material 15 is about twice the thickness of the plate to be manufactured.
Insert The reason for this is that the plate thickness produced in the final process is
This is because it shrinks to half of the kneaded material put in the molding die 16 (the above is the second step).

Thereafter, the plate-shaped kneaded material (that is, plate-like material) 15 formed into a predetermined shape is kept in its original shape, as shown in FIG.
Put in. As a method of not distorting the shape of the kneaded material 15, for example, a method of wrapping the kneaded material 15 around with a cloth and putting the kneaded material 15 in a calcium chloride liquid tank 17 so as to produce tofu,
As a structure in which the bottom plate and the side plate of the molding die 16 can be disassembled, the molding plate 16 is put into a calcium chloride liquid tank 17 to disassemble the bottom plate and the side plate. There is a method of removing the molding die 16 in a state where the molding die 16 is held. Note that an aqueous solution having a calcium chloride concentration of about 1 to 3% is used.

Although it depends on the thickness of the kneaded material 15, usually, about 10 to 24 hours after the plate-shaped kneaded material 15 is charged into the calcium chloride liquid tank 17, the sodium alginate aqueous solution 13 reacts with calcium chloride. Then, plate-shaped kneaded material 1
5 is cured by hydration to form a plate-like cured product 18. In this embodiment, an inexpensive potassium chloride solution is used. However, any solution that solidifies by reacting with an aqueous sodium alginate solution 13 such as a sulfuric acid band can be applied (the third step). .

Next, as shown in FIG. 1D, the solidified plate-shaped cured product 18 is dried. This drying process is performed by placing the plate-shaped cured product 18 in a drying chamber 19. The drying chamber 19 is provided with a plurality of shelves having air permeability, on which the plate-shaped cured product 18 is placed. The temperature in the drying chamber 19 is 60 to 80 ° C.
Dry for 4 to 48 hours. Thereby, the plate-shaped cured product 18 becomes a plate material. The moisture content of the final product will be less than about 10%. The specific gravity of this plate material was 0.6, and the bending strength according to JIS was 55 kg / cm ² . Compared with the bending strength of wood of 80 to 200 kg / cm ² , the strength is lower, but it can be used sufficiently for coffins, building materials, etc. that do not require strength. In addition, when used as a coffin material, it is preferable that the surface is coated, for example, a veneer, a decorative sheet, or the like is attached to make the surface wood-grained.
Fourth step).

In the above embodiment, in the first step, a small amount (for example, 0.1 to 5% by weight) of a short fiber of a synthetic resin or a ceramic containing carbon is preferably mixed, so that the strength is further increased. Can be up. Further, when the present invention is used in a place containing water, for example, the present invention is also applied to a case where a water-resistant paint or a protective layer is provided on the surface or a preservative is mixed in the inside. Furthermore, in the embodiment, as a slurry-like food residue,
Although raw okara was used, coffee scum, shochu scum and the like may be used, and used paper is used as a pulp material. In some cases, wood fiber or wood chips can be used. .

[0012]

According to the method for manufacturing a plate material according to the first to fourth aspects, since the slurry-like food residue is not dried in the first step, unnecessary heat in the initial stage is unnecessary. Also, since it is hardened with sodium alginate and calcium chloride without using a press in the molding process,
The manufacturing process is simple, plate materials can be manufactured at low cost, and effective use of food residues that have been rarely used can be achieved. In addition, even if the manufactured plate is finally incinerated, no toxic gas is generated. In particular, in the plate material manufacturing method according to the second aspect, the kneaded material further contains short fibers, so that the strength of the manufactured plate material is improved. And in the board material manufacturing method according to claim 3, the pulp raw material is 60 to 150 parts by weight, and the sodium alginate is 1 to 100 parts by weight of the slurry-like food residue.
Since 3% by weight is contained, and sodium alginate is added in the form of an aqueous solution, it contains an appropriate fibrous substance and can economically produce a board. In the method for manufacturing a plate material according to the fourth aspect, since the product is used as a building material including a coffin material, manufacturing of the building material is inexpensive.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a manufacturing process of a method for manufacturing a plate material according to an embodiment of the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 10 kneader 11 raw okara (residue of slurry-like food) 12 waste paper (pulp raw material) 13 aqueous sodium alginate solution 14 stirrer 15 kneaded material 16 molding die 17 calcium chloride liquid tank 18 plate-shaped cured product 19 drying room

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Shuji Tsukigata 14-5 Otemachi, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture (72) Inventor Kazunori Yoyama 5-5-2 Kamiyoshida, Kokura-minami-ku, Kitakyushu-shi, Fukuoka No. 20

Claims (4)

[Claims] 1. A raw okara, coffee skewer,
First kneading by adding slurry-like food residue such as shochu residue, pulp material such as waste paper, and sodium alginate
Step, a second step of putting the kneaded product produced in the first step into a mold and shaping it into a plate shape, and placing the plate-like material in the predetermined shape in the second step in a calcium chloride liquid tank. A method of manufacturing a plate material, comprising: a third step of adding and curing the sheet-like material by water, and a fourth step of drying the plate-like cured product formed in the third step. 2. The method of manufacturing a board according to claim 1, wherein the kneading machine is simultaneously charged with short fiber components in addition to the slurry-like food residue, the pulp material, and sodium alginate. 3. The method according to claim 1, wherein the pulp material is 50 to 150 parts by weight and the sodium alginate is substantially 1 to 3 parts by weight based on 100 parts by weight of the slurry food residue. 3. The method according to claim 1, wherein the soda is added in the form of an aqueous solution. 4. The method for manufacturing a plate according to claim 1, wherein the plate manufactured in the fourth step is used as a building material including a coffin by coating the surface.