JP2000087499A - New material board and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new material board composed chiefly of vegetable food residue and a method for manufacturing the same. SOLUTION: A main raw material consisting of vegetable food residue is dried and converted into cleaned particles by a drier 1, and the weight mixing ratio of the processed main raw material to pulverized auxiliary raw material comprising polypropylene or polyethylene resin is such that the former is 50% or more and the latter is 50% or less. The materials are put in a mixer 2 and mixed and then put in the feeder of an extruder 3. The gas generated is removed by an evacuation device 4 and a gear pump 5 is installed at the rear to hold internal pressure constant and stable. Then a board is extrusion molded using a mold 6, is subjected to rolling process by a rolling machine 7, and cut into a new material board product of a predetermined length by a cutting machine 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention is intended to be used as a substitute for building materials such as plywood or laminated plywood, which is also referred to as a control panel, using vegetable food waste as a main raw material and integrating wood pieces.
The present invention relates to a new material board material and a method for manufacturing the same.

[0002]

2. Description of the Related Art There has been no board material and a method for producing the same using plant food waste as a main raw material in the prior art.

[0003]

The board material as a building material of the prior art is a veneer board obtained by assembling pieces of wood using an adhesive or the like, an integrated plywood also called a control panel, a trade name;
Wood, paper, resin, adhesives, etc. were used as the main raw materials, such as board materials called Styrofoam, so using wood, paper, etc. as the main raw materials would require deforestation from the perspective of using wood. Environmental destruction and the use of a large amount of adhesives have had a problem of adverse effects on the human body.

A board material called Styrofoam, which is a prior art building material, is lightweight, but mainly uses a gas such as chlorofluorocarbon or the like as a foaming agent. Since polystyrene (PS), a chain hydrocarbon polymer containing a benzene ring, is used as the main raw material of the resin, soot containing soot containing a benzene ring as a main component is generated in the combustion disposal process, and the combustion Since the calorific value is large, it is not possible to dispose the combustion waste treatment together with ordinary waste in ordinary households.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, a new board material of the present invention comprises a vegetable food waste contributing to the effective use of industrial waste as a main raw material and a secondary raw material. The raw material is composed of a chain hydrocarbon polymer resin having no benzene ring, which has a relatively low combustion heat value, and is extruded using an extruder.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The new board material of the present invention comprises a main raw material consisting of vegetable food waste having a weight content of 50% or more, and a polypropylene (PP) as a hardening material having a weight content of 50% or less. ) Or a mixed raw material of secondary raw materials composed of a chain hydrocarbon polymer resin having no benzene ring of polyethylene (PE).

[0007] In the new board material of the present invention, the main raw material consisting of vegetable food waste is dried and selected after the production of tofu. Okara in the form of particles and dried and selected waste obtained by squeezing fats and oils from soybean. It is also possible to use, for example, waste particles of defatted soybeans, canned coffee, and the like, which are discharged after the production of canned coffee, as drying pretreatment residues, wheat milling byproducts such as bran discharged as wheat milling byproducts, or corn meal.

In the new board material of the present invention, powdery resin of polypropylene (PP) or polyethylene (PE) can be used as an auxiliary raw material.

[0009] In the method for producing a new board material of the present invention, the main raw material consisting of vegetable food waste is pre-dried by a drier, dried to a dry moisture content of about several%, and crushed by a pulverizer. (20─30 microns), etc., to secure the selected raw material in the form of fine particles which has been sifted, and to determine the weight ratio of the main raw material and the sub-raw material composed of powdered resin of polypropylene (PP) or polyethylene (PE) 55-65% and 45-35%, respectively, and these are charged into a mixer and mixed, the mixed raw materials are charged into a feeder of an extruder, and gas generated inside a cylinder of the extruder is exhausted by a vacuum exhaust device. In addition, a gear pump, also called a gear pump, is installed at the rear of the extruder to stabilize the internal pressure generated in the cylinder, to suppress the self-voluntary firing action of the material, Then, a fan-shaped mold, also called T-table, is installed, and a plate-shaped board is extruded. The dimensions of the mold are selected, and an arbitrary width and thickness are set. In order to improve hardness and gloss, and to prevent distortion and warping due to heat, the extruded board is cut into a predetermined length by a cutting machine, and is processed by a rolling machine called a roller capable of performing a stepwise heat reduction process. A feature is to secure a product of a new material board material having a predetermined size.

In the method for producing a new board material according to the present invention, the main raw material generally consisting of vegetable food waste has an autonomous firing action under high temperature and pressure. In addition, the spontaneous firing action due to moisture is suppressed, and a gear pump, also called a gear pump, is installed at the rear of the extruder to stabilize the internal pressure generated in the cylinder of the extruder at a constant level and suppress the spontaneous firing action of the material. As a result, a uniform and lightweight plate-like board product can be secured.

The new board material of the present invention has a weight content of 5%.
Since the main raw material consisting of vegetable food waste containing 0% or more is used, it is easy to burn because it is vegetable even in the combustion and disposal treatment, and has an action that is compatible with the environment.

The new board material of the present invention has a weight content of 5%.
Since a chain hydrocarbon polymer having no benzene ring, polypropylene (PP) or polyethylene (PE), is used as an auxiliary material composed of a chain hydrocarbon polymer resin as a curing agent containing 0% or less, Trade name made from polystyrene (PS), which is a chain hydrocarbon polymer containing a benzene ring, as compared to board material called Styrofoam. Combustion mainly produces carbon dioxide and water vapor, and the calorific value of combustion (about 6000 c
al / g) is smaller than that of the polystyrene (PS) board material, so that the combustion waste treatment can be performed together with ordinary waste in ordinary households.

[0013] In the method of manufacturing a new board material according to the present invention, a mold, a rolling mill and a cutting machine have a predetermined length.
It has a thickness and width, has a good surface hardness and gloss, and can secure a product of a new material board material that prevents distortion and warpage due to heat. In terms of hardness, for example, thickness 3─5 mm, width 90 cm , 180 cm length, specific gravity 0.97 and hardness 280 kg / cm ²
It has characteristics equivalent to those of integrated plywood, also known as veneer boards and control panels.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings of an embodiment of the present invention, FIG. 1 is a schematic view of a process of a method for manufacturing a new board material.

An embodiment of the present invention will be described below. The method for manufacturing a new board material comprises, as shown in FIG. 1, a main raw material consisting of vegetable food waste having a weight content of 50% or more. Polypropylene (PP) or polyethylene (P) as a curing material containing a weight content of 50% or less
E) The secondary raw material is composed of a chain hydrocarbon polymer resin having no benzene ring.

As the main raw material, about 90% hydrated refuse consisting of vegetable food waste after tofu production is pre-dried by a drier, dried to a dry water content of about several%, and crushed. Fine-grained okara, which has been sieved using a mesh (20-30 microns), and the waste of industrial waste, which has been squeezed out of oils and fats from soybeans, is subjected to drying treatment with a dryer to a dry moisture content of about several percent, and crushed. Preliminary treatment of the finely grained defatted soybeans, which have been sieved using a mesh (20-30 microns), or coffee lees discharged after the production of canned coffee, etc. with a dryer, and a dry water content of about several%
Was used for drying.

As the above-mentioned auxiliary raw material, polypropylene (PP) or polyethylene (PE) which is a chain hydrocarbon polymer having no benzene ring made of resin is used.
A powdery low-density melt index 3 which was easy to mold was used.

The weight ratios of the main raw material consisting of vegetable food waste and the auxiliary raw material consisting of polyethylene (PE) resin are 60-65% and 40-35%, respectively.
And put into a mixer capable of mixing about 100 kg at a time and mix.

As a preparation for the extruder before the mixed raw material is fed to the twin-screw quantitative feeder of the twin-screw extruder, a six-connected 6-screw having a special screw in the same direction as the twin-screw extruder. Each temperature of cylinders C-1 to C-6 is set to 1
Heat to 80-200 ° C and raise polyethylene (P
E) Put resin into the feeder, confirm that PE comes out from the die tip of the extruder, put the mixed raw material into the fixed quantity feeder, and rapidly increase the screw rotation speed of the extruder. And gradually raise it.

In order to remove water generated from the main raw material consisting of vegetable food waste from the two places of the front cylinder C-2 and the cylinder C-4 of the extruder, a vacuum exhaust device is used. Exhaust the moisture.

A gear pump, also called a gear pump, is installed next to the rear cylinder of the extruder to stabilize the internal pressure generated in the cylinder at 15─20 kg / cm ² , thereby suppressing material firing. .

Next to the gear pump, a fan-shaped mold, also called a T-shaped table, is installed, a plate-shaped board is extruded, dimensions of the mold are selected, and an arbitrary width and thickness are set. I can do things.

A rolling mill, also called a roller, is installed next to the above-mentioned mold to improve the hardness and gloss of the surface of the extruded board, and to prevent distortion and warping due to heat. Roller equipment capable of heat reduction was used.

Next to the rolling mill, a cutting machine is installed, and the extruded board from the rolling mill equipment is cut into a predetermined length, and a new material board material having a predetermined length and thickness is formed. Secure.

The product of the new board material obtained in the above process is, for example, 3─5 mm thick, 90 cm wide and 18 cm long.
Have dimensions of 0 cm and a specific gravity of 0.97, and a hardness of 2
A board product having a weight of 80 kg / cm ² was obtained.

[0026]

The present invention is embodied in the form described above and has the following effects.

The board material of the present invention uses plant wastes such as okara and defatted soybeans, which are industrial wastes, as main raw materials, so that it not only contributes to effective use of industrial wastes, but also contributes to effective use of industrial wastes. It is an inexpensive and economical board material, and has the effect of being easily combustible and suitable for the environment because its main component is vegetable during disposal.

The new board material of the present invention can be used as a secondary raw material of a resin such as polypropylene (PP) or polyethylene (P) which is a chain hydrocarbon polymer having no benzene ring.
Since E) is used, the benzene ring, which is a main component of soot in smoke and soot in the combustion and disposal treatment, is contained, compared to polystyrene (PS), which is a chain hydrocarbon containing a benzene ring called Styrofoam. Since it burns less and becomes mainly carbon dioxide and water vapor, and has a smaller calorific value of combustion than the polystyrene (PS), it has the effect of being able to dispose of the combustion waste treatment together with ordinary waste in ordinary households.

The new board material of the present invention can provide any length, width and thickness according to the demands of the market and can be used as a substitute for architectural materials such as plywood made of wood pieces and integrated plywood which is also called a control panel. It has an effect, has good surface hardness and gloss, and can secure a lightweight product that prevents distortion and warpage due to heat. It has the same properties as hard materials as ordinary building materials. In addition, it is possible to drive nails, and it is possible to cut with a saw or the like.

The new board material of the present invention is obtained by modifying an extruder having one or a plurality of screw extruding shafts, which is a simple device usually used in the food and resin molding industries. By using raw materials, it is possible to produce a new board material that is comprehensively compatible with price, physical properties, moldability, environmental friendliness, etc., and is as good as building materials currently used mainly in the market at present. .

[Brief description of the drawings]

FIG. 1 is a process schematic diagram of a method of manufacturing a new board material, showing an embodiment of the present invention.

[Description of symbols] Drying machine Mixer Extruder Vacuum exhaust device Gear pump Mold Rolling machine Cutting machine

Claims (2)

[Claims] 1. A benzene ring of polypropylene (PP) or polyethylene (PE) as a hardening material having a weight content of 50% or less and a main raw material consisting of vegetable food waste having a weight content of 50% or more. A new board material characterized by being formed from a mixed raw material with an auxiliary raw material made of a chain hydrocarbon polymer resin having no. 2. A main raw material consisting of vegetable food waste is pre-dried by a drier, and the main raw material in the form of finely selected particles is secured using a pulverizer or the like. Or 50% or more and 50% or less, respectively, of the weight ratio with the powdery auxiliary raw material composed of a chain hydrocarbon polymer resin of polyethylene (PE), and these are charged into a mixer and mixed. Into the feeder of the extruder, remove the gas generated inside the cylinder of the extruder using a vacuum exhaust device, and further install a gear pump at the rear of the extruder to set the internal pressure generated in the cylinder. Is stabilized and then the mold is installed.
Extrusion of a board in the form of a plate is performed, the extruded board is rolled by a rolling mill, the extruded board is cut into a predetermined length by a cutting machine, and a product of a new material board material having a predetermined dimension is produced. A method of manufacturing a new board material characterized by securing.