Sheet glass and resin plate and their production and method for removing contaminant

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Technical field to which the invention belongs]

The present invention relates to a method for using a photocatalyst, and more specifically, a method for removing low-concentration pollutants (nitrogen oxides) in the environmental atmosphere (International Patent Classification B01D53 / 36) and a plate glass having a photocatalyst as a main surface. The present invention relates to a resin plate and its manufacturing method.

【0002】

[Conventional technology]

As a means for removing nitrogen oxides and the like in the atmosphere, a configuration in which a sheet-like or panel-like member having a photocatalyst arranged on the surface is arranged as a soundproof wall of a road is proposed in Japanese Patent Application Laid-Open No. 6-315614.

【0003】

Similarly, a toxic gas removing device in which a photocatalyst is supported on a vane-shaped reaction plate made of a thin plate and the reaction plates are arranged in a blind manner in an air passage is proposed in Japanese Patent Application Laid-Open No. 6-108138.

【0004】

By the way, when flat glass such as a wooden house, a high-rise building, or a glass window or a glass door constituting an automobile or a vehicle is dirty, it is manually or automatically washed with water and detergent.

【0005】

[Problems to be Solved by the Invention]

However, in the case proposed in JP-A-6-315614, the soundproof walls arranged on both sides of the road are installed only in a limited range (area), and the working area is limited. In addition, the soundproof wall is fixed and has no mobility. Therefore, the area of action is also limited. Japanese Patent Application Laid-Open No. 6-108138 has a similar problem.

【0006】

It should be noted that dirt such as organic substances adhering to the main surface of a glass window of a house, a high-rise building or a moving body (for example, an automobile) was removed by cleaning, and was not automatically decomposed and removed by a photocatalyst.

【0007】

[Means for solving problems]

In order to solve the above problems, the method for removing low-concentration pollutants (nitrogen oxides, etc.) in the environmental atmosphere and the plate glass and the resin plate in the present invention are glass windows or glass doors constituting buildings, moving objects, etc. The main plane (surface) of the photocatalyst is provided with powder particles of the photocatalyst.

【0008】

As a specific constitutional means for providing a photocatalyst on a main plane such as a plate glass or a resin plate, (1) A manufacturing method characterized in that an adhesive member containing a photocatalyst is applied to the main plane of a sheet base material constituting a plate glass or a resin plate (for example, screen printing, roll printing, spray coating, etc.). (2) A manufacturing method characterized in that a sheet-like base material is extruded from an extruder, an adhesive is printed by a coating roller, and then the photocatalyst is arranged on a main plane by spraying powder particles of the photocatalyst. (3) A manufacturing method characterized in that a photocatalyst is disposed on a main plane by extruding a sheet-like base material from an extruder and then spraying powder particles of the photocatalyst. (4) Manufacture characterized in that the sheet-like base material is extruded from an extruder, powder particles of the photocatalyst are sprayed, and then the photocatalyst is embedded in the main plane of the sheet base material by further pressing with a roller. Method. (5) A manufacturing method characterized by extruding a sheet base material from an extruder and then printing a mixture of a photocatalyst and a liquid component (for example, an organic adhesive) on a main plane with a coating roller. Is used.

【0009】

Among the above-mentioned constituent means, the adhesive member for carrying out (1), (2), and (5) is a thermosetting acrylic resin member (for example, acrylic melamine resin), an alkyd melamine resin member, or vinyl acetate. It is one of an organic binder such as a system, a fluororesin system, a silicon resin system, an epoxy resin system, or a UV resin (ultraviolet curing resin).

【0010】

Of course, it may be the following member which is often used as a glue material. For example, starch made of rice, cornstarch, konjac, etc., gelatin, agar, natural rubber, etc., water-soluble resin member such as polyvinyl alcohol (PVA / Poval), rubber member (eg, butyl rubber), vinyl chloride. , Any member such as phenol resin may be used.

【0011】

The poval is a white powder made by reacting a vinyl acetate resin with an alkali and is water-soluble. As other water-soluble plastic paste, sodium polyacrylate, CMC (caboxymethyl cellulose), methyl cellulose, polyvinylpyrrolidone (water-soluble) and the like may be arbitrarily used.

【0012】

Needless to say, when the water-soluble adhesive is impregnated with a photocatalyst and arranged on a plate glass or a resin plate, the photocatalyst can be removed as needed.

【0013】

As the photocatalyst contained in the adhesive member, for example, titanium dioxide or any photocatalyst such as a mixture of titanium dioxide and activated carbon may be used.

【0014】

The surface of the photocatalyst, which is included in the adhesive member and fixed to the main plane (surface) of the plate glass or the resin plate, is initially covered with the organic binder (acrylic resin adhesive member or the like).

【0015】

However, when the photocatalyst receives near-ultraviolet rays of 300 nm to 400 nm, the organic binder on the side that receives the near-ultraviolet rays (the surface side in contact with the atmosphere) is decomposed and removed, and the photocatalyst is exposed. And it functions as a photocatalyst.

【0016】

By arranging a thin film of a photocatalyst made of titanium dioxide or a mixture of titanium dioxide and activated carbon on the surface of a plate glass or a resin plate by a method such as coating, printing, spraying, or burying, the surface of the plate glass or the resin plate can be treated. Prevents dirt, kills bacteria on the surface, and removes clinging odors. It also removes low concentrations of pollutants (such as nitrogen oxides) in the environmental atmosphere.

【0017】

That is, a photocatalyst that receives near-ultraviolet rays of 300 nm to 400 nm, such as the sun or a fluorescent lamp, is activated to oxidize and decompose organic substances (acetaldehyde, ammonia, etc.), nitrogen oxides, chlorine compounds, and the like.

【0018】

The minimum coating thickness of the adhesive member containing the photocatalyst is about 0.1 micrometer to several hundred microns.

【0019】

The compounding ratio of the photocatalyst compounded in the adhesive member is 0.5 W% to 50 W%, and the weight average particle size of the photocatalyst is in the range of 0.01 micron to 100 micron.

【0020】

As a structure of the photocatalyst, for example, Japanese Patent Application Laid-Open No. 4-45853 has been proposed. Here, a highly active photocatalyst is formed by contacting a catalyst carrying a reducing catalytically active component and a photocatalyst carrying an oxidizing catalytically active component with each other, and also contacting a water-repellent substance with one of them. doing.

【0021】

As a specific example, a component having catalytic activity for the reduction reaction of carbon dioxide gas such as copper and mercury is supported on a conductive carrier such as carbon black. Further, a component having catalytic activity for the oxidation reaction of water such as silver and platinum is supported on a semiconductor such as titanium dioxide. Then, they are brought into contact with each other, but the active sites are separated from each other, which hinders charge recombination. Further, since the water-repellent substance is brought into contact with any of them, the catalyst floats and exists in the surface layer of the aqueous solution to obtain a highly active photocatalyst.

【0022】

Further, the alkoxide compound of titanium is dissolved in isomolar ethanol or the like, and hydrochloric acid or the like is added for hydrolysis. The obtained titanium oxide can be formed into any shape without a binder.

【0023】

The titanium dioxide is preferably anatase type, but may be rutile type titanium dioxide metallized with copper, silver, platinum or other metals.

【0024】

Further, the photocatalyst may be formed by a semiconductor such as W0 2, CdS, SrTiO 2, MoS 2. Further, the transparent conductive powder particles Ti0 2 may be used.

【0025】

The flat glass member may be an arbitrary member such as soda glass, sodium silicate, or hardened glass. The resin plate may be any resin member such as a transparent acrylic resin, a polycarbonate resin, or a vinyl chloride resin.

【0026】

According to the above-described configuration, the present invention removes pollutants in the atmosphere and organic substances adhering to the main surface of the plate glass or resin plate constituting a building or a moving body (for example, an automobile) without using a special device or manpower. It becomes possible to do.

【0027】

Specifically, when the photocatalyst is exposed to near-ultraviolet rays such as sunlight outdoors or indoors, low-concentration nitrogen oxides and the like in the atmosphere can be oxidized to nitric acid and captured on the photocatalyst. As a result, a healthy and comfortable life is possible. In addition, the environment can be improved. With the passage of time, the active part of the surface of the photocatalyst is mainly covered with a product such as nitric acid, and the pollutant removing ability gradually decreases, but the activity is restored by washing away the product by precipitation or washing.

【0028】

BEST MODE FOR CARRYING OUT THE INVENTION

The method for removing pollutants according to claim 1 of the present invention includes a photocatalyst on the main surface of the flat glass constituting the window or door of either the building or the moving body, and receives near-ultraviolet rays in the atmosphere. It is characterized by removing pollutants, and has the action of oxidizing and decomposing pollutants in the air or organic substances (acetaldehyde, ammonia, etc.), nitrogen oxides, chlorine compounds, etc. adhering to the main surface of flat glass. Have.

【0029】

Next, in the method for removing pollutants according to claim 2, in the method for removing pollutants according to claim 1, the photocatalyst is mainly composed of either titanium dioxide or a mixture of titanium dioxide and activated charcoal. It has the effect of oxidizing and decomposing pollutants in the air and organic substances, nitrogen oxides, chlorine compounds, etc. adhering to the main surface of the window glass.

【0030】

Next, the flat glass for building materials according to claim 3 is characterized by having a photocatalyst on the main surface, and has an action of removing pollutants in the atmosphere and stains on the surface by receiving near ultraviolet rays. Has.

【0031】

Next, the flat glass according to claim 4 is characterized in that powder particles of a photocatalyst are embedded in a main surface, and has an action of removing pollutants in the atmosphere and stains on the surface by receiving near ultraviolet rays. Has.

【0032】

Next, the flat glass according to claim 5 is provided with an adhesive member containing a photocatalyst on the main surface, and is characterized in that pollutants in the atmosphere and stains on the surface are removed by receiving near ultraviolet rays. It has the effect of removing pollutants in the air and dirt on the surface by receiving near-ultraviolet rays.

【0033】

Next, in the plate glass according to claim 6, the adhesive member according to claim 5 is made of an acrylic-based, vinyl acetate-based, fluororesin-based, silicon resin-based, epoxy resin-based, urethane resin-based, polyester resin-based, or phenol resin. It is characterized by being either based or polyvinyl chloride or polyvinyl alcohol, or starch, or a mixture of acrylic emulsion and water, or rubber or vinyl chloride, and is exposed to near-ultraviolet rays to the atmosphere. It has the effect of removing the contaminants inside and the dirt on the surface.

【0034】

Next, the method for producing flat glass according to claim 7 is characterized in that the photocatalyst is arranged by spray coating in which an adhesive member containing a photocatalyst is sprayed by air pressure or vaporized gas, and the glass is efficiently and inexpensively produced. It has the effect of mass-producing windows or glass doors.

【0035】

Next, the method for producing a flat glass according to claim 8 is characterized in that the sheet base material is extruded from an extruder and then the photocatalyst is arranged on the main surface by spraying the powder particles of the photocatalyst. It has the effect of being able to mass-produce glass windows or glass doors equipped with a photocatalyst efficiently and inexpensively without including an adhesive member.

【0036】

Next, in the method for producing a flat glass according to claim 9, the sheet base material is extruded from an extruder, powder particles of the photocatalyst are sprayed, and then the photocatalyst is further pressed by a roller to apply the photocatalyst to the main surface of the sheet base material. It is characterized by being buried, and has an effect of being able to mass-produce glass windows or glass doors having a photocatalyst and a smooth surface, efficiently and inexpensively without including an adhesive member.

【0037】

Next, the method for manufacturing a flat glass according to claim 10 is characterized in that a sheet base material is extruded from an extruder and then a mixture of a photocatalyst and a liquid component is printed by a coating roller, which is efficient and inexpensive. It has the effect of being able to mass-produce glass windows or glass doors equipped with a photocatalyst.

【0038】

Next, in the method for producing a flat glass according to claim 11, the sheet base material is extruded from an extruder, an adhesive is printed by a coating roller, and then powder particles of a photocatalyst are sprayed to cover the sheet base material. It is characterized by arranging a photocatalyst on the main surface, and has an effect of being able to mass-produce glass windows or glass doors equipped with a photocatalyst efficiently and inexpensively.

【0039】

Next, the resin plate according to claim 12 is characterized in that powder particles of a photocatalyst are embedded in a main surface, and pollutants in the atmosphere and stains on the surface are removed by receiving near ultraviolet rays. It has the effect of.

【0040】

Next, the method for manufacturing a resin plate according to claim 13 is characterized in that the photocatalyst is arranged by spray coating in which an adhesive member containing a photocatalyst is sprayed with air pressure or vaporized gas, and the photocatalyst is efficiently and inexpensively used. It has the effect of being able to mass-produce resin plates equipped with.

【0041】

Next, the method for manufacturing a resin plate according to claim 14 is characterized in that a photocatalyst is disposed on a main surface by extruding a sheet base material from an extruder and then spraying powder particles of a photocatalyst. It has the effect of being able to mass-produce resin plates equipped with a photocatalyst efficiently and inexpensively without using adhesive members.

【0042】

Next, in the method for manufacturing a resin plate according to claim 15, the sheet base material is extruded from an extruder, powder particles of the photocatalyst are sprayed, and then the photocatalyst powder particles are further pressed by a roller to press the photocatalyst on the main surface of the sheet base material. It is characterized by being embedded in the resin plate, and has an effect of being able to mass-produce a resin plate provided with a smooth surface and a photocatalyst efficiently and inexpensively without using an adhesive member.

【0043】

Next, the method for manufacturing a resin plate according to claim 16 is characterized in that a sheet base material is extruded from an extruder and then a mixture of a photocatalyst and a liquid component is printed by a coating roller, which is efficient and inexpensive. It has the effect of being able to mass-produce resin plates equipped with a photocatalyst.

【0044】

Next, in the method for manufacturing a resin plate according to claim 17, the sheet base material is extruded from an extruder, an adhesive is printed by a coating roller, and then the photocatalyst is arranged on the main surface by spraying powder particles of the photocatalyst. It is characterized by being installed, and has the effect of being able to mass-produce resin plates equipped with a photocatalyst efficiently and inexpensively.

【0045】

Next, the flat glass for a mobile body according to claim 18 is provided with a photocatalyst on the main surface, and is characterized in that pollutants in the atmosphere and dirt on the surface are removed by receiving near ultraviolet rays, and is efficient. It has the effect of being able to mass-produce flat glass for automobiles and the like equipped with a photocatalyst at low cost.

【0046】

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 4. (Embodiment 1) FIG. 4 shows an external perspective view of a wooden house 100 according to an embodiment of the present invention. 70 indicates a glass window and 71 indicates a glass door. The sheet-like base material constituting the glass window 70 or the glass door 71 is made of plate glass or a resin plate.

【0047】

The main plane of the flat glass (both the inner surface side facing the room and the outer surface side in contact with the outside air) constituting the glass window 70 or the glass door 71 is a transparent or predetermined photocatalyst contained in an adhesive member having a predetermined color tone. It is arranged in a film thickness dimension of, for example, 50 microns.

【0048】

As the adhesive member, as described above, a thermosetting acrylic resin member (for example, acrylic melamine resin), an alkyd melamine resin member, a vinyl acetate type, a fluororesin type, a silicon resin type, an epoxy resin type, or a urethane It is one of resin-based or polyester resin-based, phenol-resin-based, or polyvinyl chloride-based synthetic resin members (or organic binders).

【0049】

As the photocatalyst contained in the adhesive member, for example, titanium dioxide or any photocatalyst such as a mixture of titanium dioxide and activated carbon may be used.

【0050】

The minimum coating thickness of the photocatalyst layer is about 0.3 micron to 50 micron.

【0051】

The compounding ratio of the photocatalyst compounded in the adhesive member is 0.5 W% to 50 W%, and the weight average particle size of the photocatalyst is in the range of 0.01 micron to 30 micron.

【0052】

In addition to the above-mentioned adhesive member, a method using an epoxy adhesive member may be used as a method for supporting the titanium dioxide particles. In this case, the titanium dioxide particles are impregnated with water, dispersed in an adhesive member containing an epoxy resin, and then applied to the main plane of a sheet-like base material constituting a glass window or a glass door. Then, the thinner is first dried at 30 to 50 degrees Celsius to evaporate the thinner, and then secondarily dried at 80 to 200 degrees Celsius to form a photocatalyst layer.

【0053】

Needless to say, as the coating method, any means such as printing, dip coating, spray coating, electrostatic coating or powder coating may be used.

【0054】

Further, the UV resin may be impregnated with the powder particles of the photocatalyst and applied to the main plane of the plate glass.

【0055】

Further, the same applies to the fact that the titanium dioxide particles may be dispersed and applied to the portion corresponding to the dispersion medium of the pigment, that is, the portion (vehicle) corresponding to the transparent adhesive member.

【0056】

Further, the powder particles of the photocatalyst may be directly embedded in the surface of the plate glass or the resin member without using the adhesive member.

【0057】

Further, as the sheet-like substrate, any member such as a transparent or colored glass substrate, a patterned opaque glass substrate, or a transparent or colored resin substrate may be used. The transparent silicate glass does not absorb the ultraviolet and visible light regions of sunlight and activates the photocatalyst from the back surface of the plate glass.

【0058】

Objects for installing windows, doors (or doors) made of glass or transparent resin members are also optional, such as wooden houses, high-rise buildings, moving objects (for example, automobiles (motorcycles, tricycles, four-wheeled vehicles, buses, etc.), railways, etc.) Vehicles, flying objects such as aircraft, ships), show windows, display cases (for example, Gazette No. 62-198472, etc.), see-through windows surrounding the product display section of vending machines (for example, Japanese Patent Application Laid-Open No. 1-30988 The see-through window portion 5a, etc. in FIGS. 6 and 7 in the publication may be arbitrary.

【0059】

In the case of the four-wheeled vehicle, a photocatalyst may be arbitrarily arranged as the glass window, such as a windshield, a rear glass, a window glass attached to a door or a body and moving up and down.

【0060】

(Embodiment 2) FIG. 1 is a side view of a main part of a manufacturing apparatus for a sheet-like base material (plate glass or resin plate) constituting a window, a door, etc. in the second embodiment of the present invention. The sheet-like base material will be described with reference to an example of an acrylic resin member.

【0061】

The structure of the sheet-shaped base material manufacturing apparatus includes an extrusion molding means for extruding a continuous sheet-shaped base material, an adhesive coating means for printing an adhesive layer with a coating roller, and a vibration or shaking means. Alternatively, it is provided with a photocatalytic particle supply means using a cascade type electromagnetic vibrator and a pair of heat-molded roll means for patterning at least one main plane to make it opaque.

【0062】

A method for producing a sheet-like base material using the apparatus shown in FIG. 1 will be described. First, the sheet-like base material 1 is continuously extruded to a thickness of about 1 mm to 10 mm by an extrusion molding means using an extruder 40 and a T die (not shown).

【0063】

Next, the adhesive layer 19 is coated on one main plane (upper surface side in the embodiment of FIG. 1) of the sheet-like base material 1 to be continuously molded by the coating roller 44 in the form of a thin film having a thickness of about 2 to 20 μm. Print and apply using 44. As the adhesive, a transparent liquid member such as an ultraviolet curable resin or an acrylic resin is used.

【0064】

The adhesive 41 is supplied to the coating roller 44 by the hopper 42, and the coating film thickness to the coating roller 44 is regulated by opening and closing the doctor blade 43 arranged on the side wall of the hopper. The coating roller 44 has a surface layer coated with a rubber lining 45 such as silicon or fluorine. The rubber lining 45 may be carried out as needed, and the surface of the coating roller 44 may be processed in a predetermined manner as in letterpress printing or gravure printing. After that, the shake 6 located above the sheet-like base material 1 is slightly vibrated by means such as an electromagnetic vibrator 7 connected to the shake 6, and is shaken left and right to form a powder particle-like photocatalyst 4 in a sheet shape. Spray on the main plane of substrate 1. In the sheet-shaped base material 1 on which the photocatalyst 4 is mounted, both sides of the sheet-shaped base material 1 are molded into a predetermined shape by a pair of heat-molded rolls 8 and 9 (each heated to 90 degrees Celsius), and the traveling direction is reversed. Then proceed in the direction of Extruda 40.

【0065】

As a matter of course, after cooling, the sheet-like base material 1 is cut into dimensions corresponding to windows or doors (not shown).

【0066】

Further, the photocatalyst 4 supplied on the sheet-like base material 1 by using the shake 6 is not necessarily supplied only for one particle, but is supplied in a multi-layered manner. However, when the sheet-like base material 1 is changed in direction by the pair of heat-molded rolls 8 and 9, all but the photocatalyst adhered by the adhesive force of the adhesive 41 is naturally dropped and removed. Of course, if necessary, an air spray nozzle or a scraping blade may be provided near the heat forming roll 8 to forcibly remove the air spray nozzle or scraping blade.

【0067】

In addition, although the example using the shake 6 and the electromagnetic vibrator 7 as the spraying means of the photocatalyst was described, instead of this, the photocatalyst is sprayed directly from the tip of the gutter of the cascade type electromagnetic vibrator (for example, a product of Shinko Electric Co., Ltd.). You may do so.

【0068】

When the photocatalyst is arranged on the main plane of the sheet-like base material made of a glass member, it can be similarly carried out by changing the arrangement of the pair of heat-molded roll means. That is, the heat-molded roll 9 may be arranged on the upper part of the heat-molded roll 8 to linearly transport the sheet-shaped base material.

【0069】

Further, in the above embodiment, the example in which the photocatalyst is arranged on one main plane of the sheet-like base material has been described, but it is possible to arrange the photocatalyst on both main planes of the sheet-like base material. Needless to say.

【0070】

(Embodiment 3) FIG. 2 is a side view of a main part of the sheet-shaped base material manufacturing apparatus according to the third embodiment of the present invention. This case will also be described with reference to an example of a sheet-like base material made of a resin member.

【0071】

The apparatus consists of an extrusion molding means for extrusion molding a continuous sheet-like base material, a means for supplying a photocatalyst by a vacuum suction drum, and an external light scattering layer having an arbitrary pattern such as a stripe or a mesh on at least one main plane. It is provided with a pair of heat-molded roll means for press-molding.

【0072】

A method for manufacturing a sheet-like base material using the apparatus shown in FIG. 2 will be described. First, the sheet-like base material 1 is continuously extruded to a thickness of about 1 mm to 10 mm by an extrusion molding means using an extruder 50 and a T die (not shown).

【0073】

Next, the photocatalyst 4 adsorbed on the surface of the vacuum suction drum 53 is supplied to one main plane (upper surface side in the embodiment of FIG. 2) of the sheet-shaped base material 1 that is continuously molded.

【0074】

The vacuum suction drum 53 is made of a porous member such as ceramics or sintered metal, and is exhausted from the vacuum suction hole 54. The photocatalyst 4 is supplied to the vacuum suction drum 53 by the hopper 51, and the supply amount is regulated by opening and closing the doctor blade 52 arranged on the side wall of the hopper. In the sheet-shaped base material 1 on which the photocatalyst 4 is mounted, both sides of the sheet-shaped base material 1 are molded into a predetermined shape by a pair of heat-molded rolls 8 and 9, as in the apparatus configuration of the first embodiment, and the traveling direction is formed. Reverse and proceed in the direction of extruder 40. Whether the photocatalyst 4 supplied on the sheet-shaped base material 1 is placed on the surface of the sheet-shaped base material 1 or embedded in the surface layer can be set by the distance between the centers of the heat-molded rolls 8 and 9. It may be arbitrarily selected and implemented according to the target sheet-like substrate.

【0075】

(Embodiment 4) FIG. 3 is a side view of a main part of the sheet-shaped base material manufacturing apparatus according to the fourth embodiment of the present invention.

【0076】

This case will also be described with reference to an example of a sheet-like base material made of a resin member. The configuration of the apparatus is arbitrary, such as an extrusion molding means for extrusion molding a continuous sheet-like base material, a coating means for printing a mixture of a photocatalyst and a liquid component with a coating roller, and a striped or mesh-like shape on at least one main plane. It is provided with a pair of heat-molded roll means for press-molding the external light scattering layer of the pattern.

【0077】

A method for manufacturing a sheet-like base material using the apparatus shown in FIG. 3 will be described. First, the sheet-like base material 1 is continuously extruded to a thickness of about 1 mm to 10 mm by an extrusion molding means using an extruder 60 and a T die (not shown).

【0078】

Next, a photocatalyst and water or an adhesive liquid member such as an ultraviolet curable resin or an acrylic resin are formed on one main plane (upper surface side in the embodiment of FIG. 3) of the sheet-like base material 1 that is continuously molded by a coating roller 63. The mixed liquid photocatalyst 66 is printed and applied in the form of a thin film, and is predeterminedly dried with a far-infrared heater 65 or the like. The mixed liquid photocatalyst 66 is supplied to the coating roller 64 by the hopper 61, and the coating film thickness is regulated by opening and closing the doctor blade 62 arranged on the side wall of the hopper. The coating roller 63 is provided with a rubber lining 64 such as silicon or fluorine on the surface layer. The rubber lining 64 may be performed as needed, and the surface of the coating roller 63 may be processed in a predetermined manner as in letterpress printing or gravure printing. After that, in the sheet-shaped base material 1, both sides of the sheet-shaped base material 1 are molded into a predetermined shape by the pair of heat-molded rolls 8 and 9, and the traveling direction is reversed as in the apparatus configuration of the first embodiment. Then proceed in the direction of Extruder 40.

【0079】

In the above embodiment, an example of forming a pattern for light scattering on the main plane of a sheet-like base material has been described, or it is not necessary to separately arrange a pattern for light scattering, and both sides are flat transparent. Needless to say, it may be used as an optical sheet (transparent plate glass or resin plate).

【0080】

Similarly, the photocatalyst may be arranged on both sides of the plate glass or the resin plate.

【0081】

[Effect of the invention]

As described above, the method for removing pollutants and the plate glass and the resin plate in the present invention can oxidize pollutants in the atmosphere such as low-concentration nitrogen oxides to nitric acid and capture them on the photocatalyst. Further, it is possible to remove organic substances and the like adhering to the main plane of the glass window or the glass door without using a special device or manpower.

【0082】

In addition, it is not necessary to separately manufacture and install a sheet or panel equipped with a photocatalyst, a blind type toxic gas removing device, or the like. Of course, there is no need for installation space for seats, panels, blind-type toxic gas removal devices, and the like. Further, the sheet-like base material can be mass-produced at low cost.

[Simple explanation of drawings]

[Figure 1]

Side view of the sheet-shaped base material manufacturing apparatus according to the second embodiment of the present invention. [Figure 2]

Side view of the sheet-shaped base material manufacturing apparatus according to the third embodiment of the present invention. [Fig. 3]

Side view of the sheet-shaped base material manufacturing apparatus according to the fourth embodiment of the present invention. [Fig. 4]

Perspective view of a wooden house used in the description of Embodiment 1 of the present invention. [Explanation of symbols]

1 Sheet-like base material 4 Photocatalyst 6 shake 7 vibrator 8,9 Heat-molded roll 40,50,60 Extruder 41 Adhesive 42,51,61 Hopper 43,52,62 blades 44,63 Coating roller 45,64 rubber lining 53 drums 54 Vacuum suction hole 65 heater 66 Mixed-liquid photocatalyst 70 glass windows 71 glass door 100 wooden house