JP2003328285A - Raw material for building material, method for producing raw material for building material and building material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a building material having high effect of mildewproofing, deodorization, antimicrobial action, etc., by effectively recycling wastepaper without selecting the kind of the wastepaper. <P>SOLUTION: The raw material for the building material comprising a cellulose fiber obtained by chipping or fibrillating the wastepaper, at least one of copper and a copper-containing material and at least one of boron and a boron- containing material is used. The method for producing the building material comprises a step S01 for chipping the wastepaper to give a wastepaper raw material, a step S02 for introducing boric acid in a preset ratio to the wastepaper raw material and a step S03 for introducing at least one of copper and the copper-containing material being a material having antimicrobial properties in a preset ratio to the wastepaper raw material. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building material, a building material and a method for manufacturing the building material, and more particularly to a building material, a building material and a building material manufacturing method using waste paper.

[0002]

2. Description of the Related Art In recent years, the recycling of materials and equipment has been promoted due to increasing environmental problems. As one of the recycling methods, building materials for homes made from waste paper are known. As a technique of using waste paper as a housing building material, a method of manufacturing a heat insulating material and a board from waste paper is known.

For example, as a board using waste paper, the waste paper is defibrated by a dry method, a small amount of an adhesive is homogeneously added and mixed, and molded by a multi-stage hot press to obtain a product. In addition, as a heat insulating material using waste paper, the waste paper is defibrated and then refined into a cotton shape to be commercialized.

[0004] These have the advantages that it is possible to reuse the waste paper that is difficult to dispose, that the material cost can be reduced, and that harmful substances such as formaldehyde and ammonia are hard to generate. is there. However, although the material cost can be reduced, the manufacturing cost and storage cost increase,
There are drawbacks such as the fact that the effects of mold prevention and deodorization are not necessarily high, and that the type of waste paper must be selected depending on the application and applied technology.

There is a demand for a technique capable of more effectively recycling used paper. There is a demand for a technology for manufacturing a building material using waste paper that is inexpensive and can be easily manufactured. There is a demand for a technique for producing a building material having high effects such as mold prevention, deodorization and antibacterial. There is a demand for a technology capable of manufacturing a building material that does not select the type of waste paper.

[0006]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a raw material for building materials, a raw material for building materials and a method for producing a building material, which enables more effective recycling of waste paper.

Another object of the present invention is to provide a raw material for a building material, a raw material for a building material, and a method for producing a building material, which can be manufactured inexpensively and easily using waste paper.

Still another object of the present invention is to prevent mildew and deodorize,
It is an object of the present invention to provide a building material raw material having a high effect such as antibacterial, a building material raw material, and a method for manufacturing the building material.

Another object of the present invention is to provide a raw material for building materials, a raw material for building materials, and a method for producing a building material, which can be produced regardless of the type of waste paper.

[0010]

[Means for Solving the Problems] Means for solving the problems will be described below by using the numbers and symbols used in the embodiments of the present invention. These numbers and signs are added to clarify the correspondence between the description of [Claims] and the [Embodiment of the Invention]. However, those numbers and signs should not be used for the interpretation of the technical scope of the invention described in [Claims].

Therefore, in order to solve the above-mentioned problems, the raw material for building materials of the present invention comprises cellulose fibers obtained by chipping or defibrating used paper, and at least one of copper and a material containing copper. Here, there is no limitation on the type of used paper, and it is sufficient that it can be cut (or defibrated). Examples are newspapers, advertisements, leaflets, catalogs, magazines, books, documents, paperboard, cardboard, wrapping paper, and the like. Cellulose fiber is one of the main components of waste paper. The material containing copper is exemplified by a copper compound such as copper sulfite or copper sulfate, or a fiber containing copper or a copper compound. Copper and a material containing copper are contained in the raw material for building materials in a state (chemically and physically) capable of exhibiting the antibacterial and deodorizing effects of copper. As an example of such a state, copper sulfite ion, copper sulfate ion, copper ion, or a state in which they are bound to a substrate (raw paper raw material or the like) can be considered. Further, other metals or compounds such as silver and silver compounds that exhibit antibacterial and deodorant effects may be contained in a state capable of exerting the effect.

The building material raw material of the present invention further comprises at least one of boron and a material containing boron. Materials containing boron are exemplified by boron compounds, fibers containing boron and boron compounds. Boron and a boron compound are contained in a raw material for building materials in a state (chemical, physical) capable of exerting effects such as mildew resistance, dew protection and fire protection.

In order to solve the above-mentioned problems, the method for producing a raw material for building materials according to the present invention comprises a step (S01) of converting waste paper into chips into a waste paper raw material, and an antibacterial property of the waste paper raw material at a preset ratio. Introducing a material having
03) and. The chip formation can be performed using a method that has been used (or can be used) for recycling used paper. The material having antibacterial properties may have other useful effects (eg, those useful as building materials such as deodorant and dew proof). The introduction means that the introduced material is retained (included) in a state capable of exhibiting its characteristics (antibacterial property and the like).

The method for producing a building material according to the present invention is
Step of making waste paper into chips and using it as raw material (S01)
However, the method includes the steps of cutting the used paper into coarse chips and defibrating the coarse chips. Defibration
It can be performed by using a method conventionally used (or available) for recycling used paper.

The method for producing a building material according to the present invention is
The material having antibacterial properties includes at least one of copper and a material containing copper. The material containing copper is exemplified by a copper compound such as copper sulfite or copper sulfate, or a fiber containing copper or a copper compound. Copper and a material containing copper are contained in the raw material for building materials in a state (chemically and physically) capable of exhibiting the antibacterial and deodorizing effects of copper. In addition to copper and a material containing copper, a metal or compound such as silver that can exert antibacterial and deodorizing effects may be used. As an example of a state in which the antibacterial effect and the deodorizing effect can be exhibited, it is considered that copper sulfite ion, copper sulfate ion, copper ion, silver ion, or a state in which they are bonded to a base material (raw paper material, etc.) .

Further, the method for producing a building material of the present invention is
The step of introducing a material having antibacterial properties (S03) includes
The method comprises the steps of cutting a fiber into which copper is introduced using at least one of copper sulfite and copper sulfate into a preset size, and mixing the fiber with the used paper raw material. The fiber may be a natural material fiber or a chemical fiber. Copper compounds other than copper sulfite and copper sulfate may be used, and soluble copper [II] salts such as copper nitrate can be used.

Further, the method for producing a building material according to the present invention comprises:
The step of introducing a material having antibacterial properties (S03) includes
And a step of mixing at least one of copper sulfite and copper sulfate with a used paper raw material. At least one of copper sulfite and copper sulfate is mixed with the used paper raw material in the form of powder, chunk, or the like, or in the form of its aqueous solution. Copper compounds other than copper sulfite and copper sulfate may be used, and soluble copper [II] salts such as copper nitrate can be used.

Furthermore, the method for producing a building material according to the present invention comprises:
The method further comprises a step (S02) of introducing boron and a material containing boron into a used paper material at a preset ratio. Materials containing boron are exemplified by boron compounds, fibers containing boron and boron compounds. Boron and a boron compound are contained in a raw material for building materials in a state (chemical, physical) capable of exerting effects such as mildew resistance, dew protection and fire protection.

In order to solve the above-mentioned problems, the method for producing a waste paper board of the present invention comprises a step (S01) of chipping or disintegrating waste paper to obtain a waste paper raw material, a fiber containing copper, copper sulfite and copper sulfate. At least one of them and the waste paper raw material are mixed at a preset ratio to be a building material raw material (S03), and the building material raw material is heated and compressed under preset conditions (S22). It is equipped with.
Fibers containing copper are loaded with copper using copper compounds such as copper sulfite and copper sulfate. Soluble copper [II] salts such as copper nitrate can be utilized as well as copper sulfite and copper sulfate. For heating and compression, a method exemplified by hot isostatic pressing (HIP) can be used in addition to hot pressing.

In order to solve the above-mentioned problems, the method for producing wallpaper according to the present invention comprises a step (S01) of chipping or disintegrating waste paper into a raw material for waste paper, and a fiber containing copper, copper sulfite and copper sulfate. A step of mixing at least one and the used paper material at a preset ratio to obtain a building material (S
03) and the step (S11-S13) of making paper using the raw material for building materials. Fibers containing copper are loaded with copper using copper compounds such as copper sulfite and copper sulfate. Soluble copper [II] salts such as copper nitrate can be utilized as well as copper sulfite and copper sulfate. For the papermaking performed using the building material, for example, a conventionally known papermaking process for producing recycled paper can be used.

In order to solve the above-mentioned problems, the method for producing a heat insulating material of the present invention comprises a step (S01) of chipping or disintegrating used paper into a used paper raw material, and a fiber containing copper, copper sulfite and copper sulfate. At least one of the above and the waste paper raw material are mixed at a preset ratio to obtain a building material raw material (S03), and a step of introducing at least one of gas and a foaming agent into the building material raw material and solidifying ( S32). Fibers containing copper are loaded with copper using copper compounds such as copper sulfite and copper sulfate. Soluble copper [II] salts such as copper nitrate can be utilized as well as copper sulfite and copper sulfate. In order to introduce and solidify at least one of a gas and a foaming agent into a building material, for example, when producing a heat insulating wall by blowing the building material with a blower, it is possible to enclose a large amount of gas. I can.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a raw material for building materials according to the present invention,
Regarding the embodiment of the raw material for building material and the manufacturing method of the building material,
Description will be given with reference to the accompanying drawings. In this embodiment, a building material used for a wall for a house will be described as an example. However, it is also applicable to building materials, containers, furniture, interiors, etc. for other types of buildings that can be manufactured using pulp.

The raw materials for building materials of the present invention are waste paper, mildew-proof,
It contains a material having a dew-proof and fire-proof effect and a material having an antibacterial effect derived from copper sulfite, copper sulfate and the like.
The various building materials of the present invention are obtained by mixing the building material with other materials necessary for commercialization (adhesives, curing agents, foaming agents, etc.). Their building materials are mildew-proof,
It is a building material that has a strong antibacterial effect in addition to dew and fire protection. Since it does not matter what kind of used paper, it can be applied to the recycling of all used paper.

Embodiments of the building material material of the present invention and various building materials using the same will be described below with reference to the drawings. FIG. 1 is a perspective view showing a construction of a building material to which the raw material for building material according to the present invention is applied. 1A shows a wallpaper 1, FIG. 1B shows a board 2, and FIG. 1C shows a heat insulating material 5.

The building material raw material of the present invention contains waste paper material, additive A and additive B. The waste paper is a paper produced by sticking plant fibers and other fibers (including synthetic polymer material fibers, inorganic material fibers, etc.) to each other and used. The waste paper is exemplified by unnecessary (used) newspapers, advertisements, leaflets, catalogs, magazines, books, documents, paperboards, cardboards, wrapping papers, and the like. The used paper material is obtained by finely cutting the used paper, or fibers obtained by further defibration (mainly including cellulose fiber, chemical fiber material, etc.)
Is.

Additive A is a material having antifungal, insecticidal and dewproof effects. It may have a fireproof effect. Additive A is exemplified by boric acid. The method of mixing waste paper and boric acid is also used in conventional paper clay and various building materials, and there is no concern about toxic gases, and its safety is widely recognized. In the case of boric acid, 0.5 to 5 for waste paper
% (% By weight, the same applies hereinafter). If it is less than 0.5%, there is no effect. More than 5% may be mixed, but in that case, the effect is almost the same as when 5% is mixed.

Additive B is a material having an antibacterial effect.
The additive B is exemplified by copper sulfite and copper sulfate. The safety of copper sulphite and copper sulphate or the copper derived therefrom is based on the US FDA (Food and Drug Admi).
Safety is recognized by the Ministry of Health, Labor and Welfare of Japan as well as the NISTRATION). In the case of cuprous sulfite, 0.1 to 5% is mixed with used paper. If less than 0.1%, there is no effect. More than 5% may be mixed, but in that case, the effect is almost the same as when 5% is mixed.

Further, silver or a compound containing silver may be used. Compounds containing copper such as copper sulfite and copper sulfate, or copper, silver and compounds containing silver produced therefrom can exert their antibacterial and deodorant effects (chemical,
It is contained in the raw material for building materials in the (physical) state. As an example of such a state, copper sulfite ion, copper sulfate ion, copper ion, silver ion, or a state in which they are bonded to a base material (raw paper material or the like) is considered.

The wallpaper 1 (FIG. 1 (a)) contains the above-mentioned raw materials for building materials (waste paper material, additive A and additive B), and is manufactured into a thin paper form. Additive A and additive B
You may mix a dye and give a pattern and color in the range which does not affect the effect of. The ratio of waste paper, boric acid and copper is as described above, but more preferably 100: 0.5 to 3:
It is 0.1-5. For example, waste paper: boric acid: copper sulfite:
Water = 100 g: 2 g: 5 g: 1000 g.

The board 2 (FIG. 1B) is the board body 3
And a cover 4. The board body 3 contains the above-mentioned building material (waste paper material, additive A and additive B), and is manufactured in a plate shape having an appropriate thickness. Strength can be increased by increasing the density. Further, if the density is lowered, the porosity is increased, and the heat insulating property and the sound absorbing property can be improved. The cover 4 covers the board body 3,
It protects the surface and improves aesthetics. Cover 4
Is an overlay (plastic, paper, cloth, sheet metal,
Very thin veneer), printing, painting, etc.
However, the cover 4 may not be used. In that case, the manufacturing cost is reduced. From the use form of the board 2 and the above-mentioned reason, the specific gravity is preferably 0.5 to 1.0.
More preferably, it is 0.7 to 0.9. Bending strength is
It is 200 kgf / cm ² or more. The ratio of waste paper, boric acid and copper is as described above, but more preferably 10
It is 0: 1 to 5: 1 to 5.

The heat insulating material 5 (FIG. 1 (c)) contains the above-mentioned building material (waste paper material, additive A and additive B), and while it contains a large amount of gas, it is cotton-like or internal. It is manufactured to contain a large amount of bubbles (holes). The figure shows a state in which the wall 6 (concrete or the like) is sprayed so as to take in a large amount of gas and processed. In addition, it is also possible to pack and use it in a bag such as a non-woven (burning) cloth. The density is 30 to 50 Kg / m ³ , and the thermal conductivity is 0.
It is 030 to 0.050 Kcal / mh ° C. The ratio of used paper, boric acid and copper is as described above, but more preferably 100: 0.5 to 3: 0.5 to 3.

Next, an embodiment of a building material and a method for manufacturing a building material according to the present invention will be described with reference to the drawings. FIG. 2 is a flow chart showing an embodiment of a method for manufacturing a building material and a building material (wallpaper 1, board 2 and heat insulating material 5) according to the present invention. Here, steps S01 to S03 are a flow showing a method for manufacturing a building material, and step S04 shows a method for manufacturing a building material (wallpaper 1, board 2, and heat insulating material 5) using the building material. It is a flow.

A. Manufacturing Method of Building Material Raw Material (1) Step S01: Chiping of Waste Paper The waste paper is finely cut into chips to be used as a waste paper raw material. The size of the chip is about 1 mm square to about 5 mm. Here, the cutting is performed with a cutting mixer, a pulp crusher (cutting machine), or the like. Regardless of the type of waste paper, it is possible to chip waste paper into a desired size. However, the method of chipping is not limited to this method, and a known method can be used. Shredded paper may be used as long as it is cut to the above size. In addition, in order to make the building material (and the building material using the same) more homogeneous, the size of the chip should be made as small as possible, or the chipped waste paper should be defibrated. For defibration, a known method such as a dry pulp manufacturing device or a dry refiner can be used.

(2) Step S02: The boric acid-containing material is added, and the used paper material (used paper pulp that has been chipped or defibrated, the same applies hereinafter) is thoroughly mixed with the boric acid-containing material that contains boric acid. The boric acid concentration in the boric acid-containing material is set in advance according to the application (wall material, heat insulating material, etc.). Here, the mixing is performed by introducing the waste paper and the boric acid-containing material that are made into chips into a mixing (stirring) machine. The boric acid-containing material is exemplified by boric acid aqueous solution. In the case of boric acid aqueous solution, the boric acid concentration has the following values, for example. For wallpaper 1, use 2% boric acid aqueous solution and 100% for waste paper.
(Weight, the same applies below) For board 2,
A 100% aqueous solution of 3% boric acid is introduced into the used paper. As the heat insulating material 5, a 2% aqueous solution of boric acid is introduced to about 100% of the used paper.

(3) Step S03: Add Copper-Containing Material After mixing the waste paper raw material and the boric acid-containing material, mix the copper-containing material (at least one of copper and the material containing copper) with copper and mix well. Mix. The concentration of copper in the copper-containing material is preset according to the application (wall material, heat insulating material, etc.). The mixing is performed by introducing the chipped waste paper and the boric acid-containing material into a mixing (stirring) machine. The copper-containing material (at least one of copper and a material containing copper) is a copper-impregnated fiber that is a fiber impregnated with an aqueous solution of a copper compound such as copper sulfite or copper sulfate, or copper sulfite or copper sulfate (water / organic )
Illustrated in solution. In the case of copper-impregnated fiber, the copper concentration has the following values, for example. As the wallpaper 1, about 10% of copper-impregnated fiber impregnated with 20% of copper sulfite or an aqueous solution of copper sulfate is introduced into used paper. 2 for board 2
About 15% of copper impregnated fiber impregnated with 0% copper sulfite or copper sulfate aqueous solution is introduced into waste paper. As the heat insulating material 5, about 10% of copper impregnated fiber impregnated with a 20% copper sulfite or copper sulfate aqueous solution is introduced into waste paper.

However, the fibers (impregnated with copper sulfite or copper sulfate) are exemplified by chemical fibers exemplified by polyester, rayon, tetron, polypropylene, PET (polyethylene terephthalate), and silk, cotton, and cellulose. It is a natural fiber. Further, the impregnation with copper sulfite or copper sulfate is performed by various conventionally used dyeing techniques using a solution of copper sulfite or copper sulfate dissolved in a solvent. In addition,
Besides copper sulfite or copper sulfate, it is also possible to utilize soluble copper [II] salts such as copper nitrate. Alternatively, a soluble silver salt such as silver nitrate can be used to support the silver on the fiber.

The copper-containing material (at least one of copper and a material containing copper) is not limited to a fibrous material, and an organic or inorganic compound containing / combining a copper compound such as copper sulfite or copper sulfate. Sheet-like material finely cut, powdered organic or inorganic material containing / compounding copper compound such as copper sulfite or copper sulfate, mixed copper compound and organic material such as copper sulfite or copper sulfate Paste or the like can be used.

The above steps (step S01 to step S)
By 03), the raw material for building materials is completed. It should be noted that this was dissolved (mixed) in a dried product, or a suitable binder or solvent (however, boric acid or a solvent that does not leach copper).
Also, those mixed with additives having other effects are also
It is a raw material for building materials of the present invention. Moreover, step S02 and step S03 may be performed simultaneously. That is, at the same time, the boric acid-containing material and the copper-containing material are mixed with the chipped waste paper. The quantitative conditions are as described above.

B. Manufacturing method of building materials (wallpaper 1, board 2 and heat insulating material 5) using building material (4) Step S04: Processed building material (completed in Step S03, the same applies hereinafter) Type of building material manufactured Process according to (use). (4-1) Wallpaper 1 FIG. 3 is a flow chart showing a method for manufacturing the wallpaper 1 from the building material. (4-1-1) Step S11: Uniformly Developing Raw Materials for Building Materials The raw materials for building materials (however, defibrated waste paper) are introduced into a conventionally used papermaking machine. Then, by an injection method or the like, the aqueous solution containing the building material is spread uniformly and thinly. (4-1-2) Step S12: Moisture Removal In the papermaking apparatus, the moisture is removed by squeezing the moisture from the uniformly spread thin building material and drying it. (4-1-3) Step S13: Finishing Treatment The papermaking apparatus performs finishing treatment on the wallpaper obtained by removing water. The finishing treatment is, for example, surface treatment, and includes flattening by pressing, surface coating with an appropriate solvent, painting, printing and the like. In addition, cutting to appropriate size, winding, etc. may be possible. The above-mentioned process (4-1) is just an example, and it is possible to use other conventional techniques which are carried out when making wallpaper.

(4-2) Board 2 FIG. 4 is a flow chart showing a method of manufacturing the board 2 from the building material. (4-2-1) Step S21: Filling the Building Material Raw Material into the Mold The building material raw material (however, used paper can be made into chips) is filled in the hot press mold. As the mold, one having a size large enough to obtain the board 2 having a desired size is used. At that time, a binder is mixed with the building material. (4-2-2) Step S22: The hot press formwork filled with the hot press building material is set in the hot press device, and hot press is performed at a preset temperature and pressure. A board having a desired shape (area, thickness) is formed. (4-2-3) Step S23: Finishing treatment Finishing the board having a desired thickness and density obtained by hot pressing. The finishing treatment is, for example, a surface treatment, and includes flattening by polishing and formation of the cover 4. In addition, cutting to an appropriate size, processing such as punching, and attachment of parts may be possible. The above process (4-2) is just an example, and it is possible to use other conventional techniques that are performed when a board is manufactured.

(4-3) Heat Insulating Material 5 FIG. 5 is a flow chart showing a method for producing the heat insulating material 5 from the building material. (4-3-1) Step S31: Mixing a building material with a solvent and a building material (provided that waste paper is made into chips) and the solvent are mixed. Here, the solvent is a binder (a material for interposing between non-adhesive particles to develop tackiness and integrating them) or an adhesive, and a solute that mixes them with a building material. is there. (4-3-2) Step S32: Spraying A material obtained by mixing a building material and a solvent is sprayed and fixed to the back side of the wall or ceiling by an electric blower. The air mixed in at the time of spraying with an electric blower introduces bubbles into the raw material for building materials, increasing the number of pores and improving the heat insulating property. Then, the density (example: 30 to 50 Kg / m ³ ) of the heat insulating material 5 that is formed can be changed depending on the amount of air mixed. (4-3-3) Step S33: Finishing treatment The finishing treatment is performed on the portion of the heat insulating material 5 obtained by the blowing treatment. The finishing treatment is, for example, a treatment of the surface, such as flattening off a thick portion so as to obtain a desired thickness. Alternatively, the surface may be covered with a sheet.
The above process (4-3) is just an example, and it is also possible to use other conventional techniques that are performed when manufacturing a heat insulating material.

By the above process, the building material of the present invention and the building material using the building material can be manufactured.

The produced product contains cellulose fibers as a main component, and boric acid and copper sulfite, copper sulfate, or copper derived therefrom is added thereto. That is, due to the presence of copper sulfite, copper sulfate, or copper derived therefrom, it has a very strong antibacterial effect (FDA approval in the United States) and deodorant effect which have not been obtained in the past. Moreover, the presence of boric acid has antifungal, dewproof and fireproof effects. Unless the cellulose fiber is manufactured by being extremely compressed, it has a porous structure and has a very high porosity, and thus has a large heat insulating effect.

In addition, since copper sulfite, copper sulfate, or copper and boric acid derived therefrom are supported on the surface of the aggregate of cellulose fibers having a large surface area, gas molecules (or odorous molecules) can be very efficiently prepared. , Mold, etc.). Therefore, the effect of copper and boric acid becomes very high.

An example of characteristics of the raw material for building material of the present invention will be described with reference to FIG. FIG. 6 is a table showing the results of testing the effect of chemical substances that emit odor on a sample in which waste paper and a copper-containing material are mixed. There are four types of samples, Sample 1 to Sample 4. Sample 1 is only waste paper. Sample 2 is a mixture of 5% copper-impregnated fibers (copper-impregnated fibers impregnated with a 20% copper sulfate aqueous solution cut to about 5 mm, the same in FIG. 6 below) to waste paper. Sample 3 contains 10% copper impregnated fiber against waste paper.
It is a mixture. Sample 4 is a mixture of 15% copper-impregnated fiber with used paper. Ammonia, trimethylamine, methyl mercaptan and hydrogen sulfide were used as the odorous chemical substances.

The test was conducted in the following procedure. (1) First, a container 1 containing 200 ppm of ammonia (existing in a gaseous state, the rest being air, the same in FIG. 6 below), a container 2 containing 60 ppm of trimethylamine, a container 3 containing 46 ppm of methyl mercaptan, and 20 p of hydrogen sulfide.
A container 4 containing pm is prepared. Each container (1-4) is 5
It is a container of 00 cc. (2) 3 g of each sample A is placed in each container (1 to 4) and left for a certain time (2 hours). (3) Check the concentration of the chemical substance in each container (1 to 4). (4) Perform (1) to (3) for all the samples A to D.

The numbers in the table of FIG. 6 represent the deodorizing rate (%). That is, deodorization rate (%) = 100 × (remaining amount of chemical substance after a certain period of time) / (remaining amount of initial chemical substance). As can be seen from the figure, it is clear that four kinds of chemical substances are reduced in the waste paper + copper-containing material. It can be seen that the larger the amount of the copper-containing material (= the larger the content of copper), the higher the deodorizing rate. That is, it is understood that the building material of the present invention has a strong deodorizing effect. This means that the deodorizing effect of copper sulfite, copper sulfate, or copper derived therefrom is retained as it is in the raw material of the building material.

Therefore, the use of such a copper-containing material (eg, copper sulfite or fibers impregnated with copper sulfate) makes it possible to retain the effect in the building material. For copper-containing materials (eg, fibers impregnated with copper sulfite or copper sulfate), the effect of removing chemical substances such as formaldehyde related to sick house, Escherichia coli O-157, MRS
A, antibacterial effect against pathogenic bacteria such as Salmonella typhimurium,
It has an antifungal effect against blue mold and other three types of permanent mold. Therefore, it can be seen that the raw material for building materials according to the present invention also has those effects. That is, it can be seen that the raw material for building materials has an improved antibacterial effect and deodorant effect in each stage, as compared with the conventional raw materials for building materials and building materials using the same.

In this embodiment, a wall material for a house (replacement of gypsum board such as wallpaper, wall / ceiling / floor) and a heat insulating material for house (replacement of glass wool / styrofoam) are shown. Partition boards (alternative to office partition boards), Styrofoam cases (plus antibacterial deodorant effect as a replacement for Styrofoam cases), cardboard (antibacterial as a replacement for conventional cardboard,
Plus deodorant function). They can be carried out by using the raw material for building material of the present invention and manufacturing it by a conventionally known method.

Furthermore, when the building material using the raw material for building material of the present invention is applied to a medical facility, the building itself has deodorant and antibacterial functions. Therefore, it becomes possible to reduce labor and cost for maintaining hygiene of the medical facility, and to significantly reduce the possibility of occurrence of problems such as nosocomial infection.

[0051]

Industrial Applicability According to the present invention, it is possible to effectively recycle waste paper regardless of the type of waste paper, and to produce a building material having high effects such as mildew proof, deodorant and antibacterial.

[Brief description of drawings]

FIG. 1 (a), (b), (c) are perspective views showing the construction of a building material to which the raw material for building material of the present invention is applied.

FIG. 2 is a flow chart showing a raw material for building material and a method for manufacturing a building material according to the present invention.

FIG. 3 is a flow diagram showing a method for producing wallpaper from a building material.

FIG. 4 is a flow chart showing a method for producing a board from a building material.

FIG. 5 is a flow chart showing a method for producing a heat insulating material from a building material.

FIG. 6 shows a sample in which waste paper and a copper-containing material are mixed,
It is a table | surface which shows the result of having tested the effect with respect to the chemical substance which emits an odor.

[Explanation of symbols]

1 wallpaper 2 boards 3 board body 4 cover 5 insulation 6 walls

Front page continuation (51) Int.Cl. ⁷ Identification code FI theme code (reference) D21H 17/63 D21H 17/63 21/36 21/36 27/20 27/20 A (72) Inventor Kenji Fukui Tokyo Taito-ku 2-28-25 Asakusa TAI Building 501 F term (reference) 2B260 AA01 BA04 BA13 CA02 CB02 CD10 DB01 EA20 4F055 AA17 BA02 CA13 EA02 EA26 HA18 4L055 AA11 AF09 AF10 AF33 AF43 AG03 AG04 AG08 AH21 AH50 BA05 BA20 BD22 FA10 FA20 BD10 FA08 GA23 GA24 GA50

Claims (11)

[Claims] 1. A raw material for building materials, comprising cellulose fibers obtained by chipping or defibrating waste paper, and at least one of copper and a material containing copper. 2. The raw material for building materials according to claim 1, further comprising at least one of boron and a material containing boron. 3. A method of manufacturing a raw material for a building material, which comprises: chipping waste paper into a waste paper raw material; and introducing a material having antibacterial properties into the waste paper raw material at a preset ratio. 4. The method according to claim 3, wherein the step of chipping the used paper into a used raw material comprises cutting the used paper into coarse chips and defibrating the coarse chips. Manufacturing method of raw materials for building materials. 5. The method for producing a building material raw material according to claim 3, wherein the antibacterial material contains at least one of copper and a material containing copper. 6. The step of introducing the material having an antibacterial property, the step of cutting a fiber into which copper is introduced using at least one of copper sulfite and copper sulfate into a preset size, And a step of mixing the waste paper raw material with each other, the method for producing a building material raw material according to claim 5. 7. The building material raw material according to claim 5, wherein the step of introducing the antibacterial material comprises the step of mixing at least one of copper sulfite and copper sulfate with the used paper raw material. Production method. 8. The raw material for building materials according to claim 3, further comprising a step of introducing at least one of boron and a material containing boron into the waste paper raw material at a preset ratio. Manufacturing method. 9. A step of chipping or defibrating used paper to obtain a used paper raw material; mixing at least one of a fiber containing copper, copper sulfite and copper sulfate with the used paper raw material at a preset ratio. A method of manufacturing a waste paper board, comprising: a step of using a raw material for building materials; and a step of heating and compressing the raw material for building materials under preset conditions. 10. A step of chipping or defibrating used paper to obtain a used paper raw material, mixing fibers containing copper, at least one of copper sulfite and copper sulfate, and the used paper raw material at a preset ratio. A method of manufacturing a wallpaper, comprising: a step of using a building material as a raw material; and a step of papermaking using the building material. 11. A step of chipping or disintegrating waste paper to obtain a waste paper raw material, mixing at least one of a fiber containing copper, copper sulfite and copper sulfate with the waste paper raw material in a preset ratio. A method for producing a heat insulating material, comprising: a step of using as a raw material for a building material; and a step of introducing at least one of a gas and a foaming agent into the raw material for a building material to solidify.