JPH09220734A - Transfer sheet and molding of molded product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently develop the antibacterial action of a functional member and the decomposition action of a contaminant such as nitrogen oxide and to reduce the use amt. of the functional member by coating the surface of a sheet base material and providing a photocatalyst such as titanium dioxide on the release material coating layer. SOLUTION: At first, a sheet base material with a thickness of 16-40μm composed of PET is delivered from a delivery roller 20 to be moved to a taking-up roller 21. On the way of the movement of the sheet base material 2, the release material 3, for example, the silicone member supplied from a release material storage tank 23 is applied to the single surface of the sheet base material 2 by a roller 24. The coating film thickness of the release material 3 is set to 1-5μm. A functional member 1, for example, powdery particles (a particle size; 1-10μm) of a photocatalyst composed, for example, of titanium dioxide or a mixture of titanium dioxide and activated carbon is allowed to fall on the layer of the release material 3 from a hopper 25 to obtain such a state that the functional member 1 is placed on the layer of the release material 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer sheet provided with a functional member of either an antibacterial member or a photocatalyst, and a resin member or a ceramic member for injection molding. The present invention relates to a molded product obtained by loading and softening a softening member and simultaneously transferring a functional member of either an antibacterial member or a photocatalyst to the surface of the molded product, and a molding method thereof.

[0002]

2. Description of the Related Art Conventionally, a method of arranging one of an antibacterial member and a photocatalyst functional member on the surface of a sheet base made of cloth, paper, metal foil, resin member, or the like, or a molded product or the like is known. For example, a coating means such as coating, printing (screen printing, gravure printing), spraying, dipping, or the like is used by incorporating a functional material into an adhesive or paint.

Further, a material obtained by mixing an antibacterial member into a sheet base material has been proposed in Japanese Patent Laid-Open No. 6-158002.

Further, a method is widely used in which an antibacterial member is mixed in advance with a resin member and injection molding is performed to obtain a molded product.

Further, Japanese Patent Laid-Open No. 7-290448 has proposed a structure in which an adhesive layer is provided on one side of a sheet base material and a decorative layer is provided on the other side as a sheet for in-mold decorative molded products.

[0006]

However, a method of applying and printing a functional material in an adhesive or a paint by including the functional material cannot be applied simultaneously with molding in an injection molding process, and is carried out in a separate process.

[0007] Further, a method in which an antibacterial member is mixed with a sheet base material, or a method in which an antibacterial member is preliminarily mixed in a resin member and injection-molded to obtain a molded product is a surface of a sheet base material or a molded product. There are few antibacterial members exposed on the surface of and the antibacterial effect is small. Further, a large amount of the antibacterial member mixed into the sheet base is required.

Further, in the case of a sheet for an in-mold decorative molded product, it is difficult to make a close contact between the sheet base material and the molded product, and wrinkles occur and the shape of the molded product is restricted.

On the other hand, no transfer sheet has been proposed in which a functional material of either an antibacterial member or a photocatalyst is provided on the surface of a sheet base material and the functional member is transferred to an object.

The present invention provides a transfer sheet which can be transferred by pressing or heat-pressing a functional member of either a photocatalyst or an antibacterial member onto an object having an arbitrary shape.

Further, the transfer sheet is set in an injection molding die, and the functional member disposed on the surface of the transfer sheet is transferred or embedded on the surface of the molded product by injection molding of the softening member at the same time as the molding. To do.

Further, the transfer sheet is set in an injection molding die, and a functional member disposed on the surface of the transfer sheet by being included in the adhesive in the injection molding step is provided on the surface of the molded product together with the adhesive at 1 μm. The purpose is to transfer to a thin film of ˜30 μm.

According to the present invention, the antibacterial action of the functional member,
The purpose of the present invention is to efficiently exhibit the decomposition action of pollutants such as nitrogen oxides and to reduce the amount of functional members used. It is another object of the present invention to stabilize the molding process, shorten the molding cycle, and arbitrarily shape the molded article without adhering the sheet base material to the surface of the molded article.

[0014]

In order to solve the above problems, the transfer sheet according to the present invention comprises: (1) a release material is applied to the surface of a sheet base material, and a functional member (photocatalyst) is applied on the release material. Or one of the antibacterial members)
Is provided. (2) A release agent is applied to the surface of the sheet base material, and a mixture of a functional member and an adhesive agent is applied on top of the release agent. (3) A release material layer and an adhesive layer (adhesive layer) are sequentially applied to the surface of the sheet base material in a layered manner, and a functional member is embedded in the adhesive layer.

Further, the molded article and the molding method of the present invention include (1) a transfer sheet having a functional member (either a photocatalyst or an antibacterial member) on a release material applied to a sheet base material. Is placed in a mold, and a resin member is injection-molded to obtain a molded product in which the functional member is transferred to the surface of the molded product. (2) A transfer sheet provided with a functional member on a release material applied to a sheet base material is placed in a mold, and a ceramic member is injection-molded to transfer the functional member to the surface of a molded product. It is a molded product. (3) A transfer sheet provided with a functional member is placed in a mold on a release material applied to a sheet base material, and one of a resin member and a ceramic member is injected, and simultaneously with molding. An injection molding method is used in which the functional member is transferred onto the surface of the molded product.

In the above structure of the present invention, the sheet base material may be a film or sheet made of any resin member. For example, if the thickness is 3 μm to 100 μm,
PET (polyethylene terephthalate), PE (polyethylene), PP preferably comprising about 16 μm to 40 μm
(Polypropylene), PS (polystyrene), PC (polycarbonate), polyamide, polyimide, polyvinyl chloride, nylon or the like. Of course,
It may be paper, a metal thin film such as AL foil, or cellophane, a rubber sheet, or the like.

As the release agent applied to the sheet base material,
Seed wax, silicon-based material, or fluorine-based part
Thickness of material is 0.1μm-10μm, preferably 1μm
Apply to ~ 3μm (print (gravure, offset,
Clean, etc.), spray, dip, etc.) to form a release layer.
It will be done. Of course, acrylic resin (application amount 2 g /
m ^Two), Or copper stanocyanide on amino copolymer resin
Parts with dyes added (coating amount 10-11g / m^Two)
And so on.

Examples of the adhesive (or sizing agent) for supporting the functional member include starch (rice, corn starch, konjak, etc.), gelatin, agar, natural rubber and other natural members, and POVAL (polyvinyl alcohol / PV).
A) and other water-soluble resin members, rubber members (for example, natural rubber,
Any member such as butyl rubber, an acrylic resin member, an epoxy resin member, vinyl chloride, and a phenol resin may be used.

Poval is a white powder produced by reacting vinyl acetate resin with an alkali and is water-soluble.

As the other water-soluble plastic paste, sodium polyacrylate, polyvinylpyrrolidone or the like may be used.
It may be a sizing agent CMC (caboxymethylcellulose), methylcellulose, or the like made from a natural product by a scientific reaction. The coating thickness of the adhesive is about 1 μm to 30 μm.

The form of the antibacterial member on the release material or contained in the adhesive member (carrier) is in the form of powder particles or liquid.

The outer dimensions of the antibacterial member and the like in the form of powder particles are about 0.05 μm to about 100 μm. 0.5% to 10% by weight
About.

The antibacterial member is composed of zeolite (antibacterial metal ion / silver, copper, zinc), chitosan, mugwort, cypress (hinokitiol), hiba and the like.

Zeolite is a mixture of antibacterial ceramics containing a sterilizing substance such as silver, copper or zinc at a ratio of several% of the weight of the adhesive (paste material) or paint, and the surface of a molded article or the like. By attaching and fixing to, the survival environment of the bacteria attached to the molded product is cut off. In addition, the antibacterial member in the form of powder particles is embedded on the release material applied to the sheet substrate,
Alternatively, it goes without saying that the antibacterial effect is remarkably improved by applying a liquid antibacterial member and transferring it to the surface of the molded article.

Chitosan is a natural polysaccharide that is often contained in crab shells and shrimp shells and has antibacterial and antifungal properties. A ratio of about 0.3% to about several% by weight is sufficient for embedding as a powder particle on the surface of a molded article, mixing into an adhesive member, or mixing into a solution or water, and a fine particle having a particle size of about 5 μm or less is sufficient. Powder.

Mugwort has tannin contained in mugwort for anti-allergic and antipruritic effects, chlorophyll (chlorophyll) for sterilization and antibacterial effects, and a particle size of about 0.05 μm including the extract of mugwort It may be embedded or applied as microcapsules of about 20 μm and fixed on the surface of the object.

As for cypress, the tropylone contained in the cypress plays a role of an antiseptic that keeps bacteria and mold away, and like other antibacterial members, it may be used as microcapsules having a particle size of several microns.

Further, as a liquid antibacterial member, hinoki or hiba essential oil (essential oil) or metronidazole, or else silver acetate or silver nitrate is dissolved in pure water, and K2SO3 and K2S2O3 are sequentially added to the solution,
The solution contains at least one of a silver thiosulfato complex salt and a silver salt.

Further, at least one of silver thiosulfato complex salt or silver salt is supported and adsorbed on hydrated amorphous silicon dioxide, and further an outer shell coating layer is formed on the outer surface thereof, or organic arsenic. Vinazine or the like may be mixed in water or a solvent at a weight ratio of about 0.5% to about 10%, and applied on the release material of the sheet substrate by printing, spraying or the like. Alternatively, the solvent, the resin member, and the antibacterial member may be kneaded, and applied and printed as ink (adhesive including the antibacterial member).

In addition to the above, as an antibacterial member, iodoform, metronidazole, silver silica gel antibacterial agent particles, diphenyl ether type or silicon quaternary ammonium salt (trade name ACP-20, TK-520), zirconium phosphate and oxidation. A mixture of silver, a compound in which isothiocyanate is used as an antibacterial component and which is included in cyclodextrin, and the like may be optionally used.

Any member may be used as the photocatalyst.
For example, photocatalyst fine powder particles made of titanium dioxide or a mixture of titanium dioxide and activated carbon are used. The fine powder particles of the photocatalyst are directly embedded in the surface of the object.
Of course, it may be contained in various adhesives such as Povar and transferred to and disposed on an object.

By disposing the powder particles of the photocatalyst or the thin film of the adhesive containing the photocatalyst on the surface of the object, dirt on the surface is prevented, bacteria on the surface are killed, and the attached odor is removed.

That is, 300 nm to 40 nm for the sun, fluorescent lamp, etc.
The photocatalyst that receives near-ultraviolet rays of 0 nm is activated and oxidizes and decomposes organic substances (acetaldehyde, ammonia, etc.), nitrogen oxides, chlorine compounds, and the like.

The fine powder particles of the photocatalyst made of titanium dioxide or a mixture of titanium dioxide and activated carbon have an outer shape of 0.01 micrometer to 100 micrometer.

Further, the content of the adhesive in the adhesive may be about 0.1 to 30% by weight. The coating thickness may be arbitrarily determined according to the purpose of use. For example, it may be applied to a thickness of several micrometers to 100 micrometers. In the case of screen or gravure printing or the like, a range of several micrometers to 20 micrometers is suitable.

The structure of the photocatalyst is, for example, JP-A-4-4.
Japanese Patent No. 5853 is proposed. Here, a highly active photocatalyst is formed by bringing a catalyst carrying a reducing catalytically active component and a photocatalyst carrying an oxidizing catalytically active component into contact with each other, and further contacting a water-repellent substance with one of them. doing.

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

The titanium alkoxide compound is dissolved in equimolar ethanol or the like, and hydrochloric acid or the like is added to hydrolyze it. The obtained titanium compound can be formed into any shape without a binder.

The titanium dioxide is preferably anatase type, but it may be rutile type titanium dioxide metallized with copper, silver, platinum or other metal. Also, W
A photocatalyst may be formed of a semiconductor such as O ↓ 2, Cds, SrTiO ↓ 2, and MoS ↓ 2.

According to the invention of the present application, the functional member can be easily transferred to an arbitrary object by the above-mentioned structure. In addition, a functional member or an adhesive containing the functional member can be provided on the surface of the molded article at the same time as molding during the injection molding process.

As a result, the antibacterial member prevents the growth of mold and bacteria, and the photocatalyst decomposes pollutants adhered to the surface of the air or the surface of the molded article to enable a healthy and comfortable life. In addition, hospital-acquired infections can be reduced.

Furthermore, the amount of the functional member used can be reduced. Further, since the sheet base material is not adhered to the surface of the molded product and wrinkles do not occur, the molding process can be stabilized, the molding cycle can be shortened, and the shape of the molded product can be made optional.

[0043]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is a transfer sheet characterized in that a release material is applied to the surface of a sheet substrate and a photocatalyst is provided on the release material. The photocatalyst can be easily transferred to an arbitrary object. Also, it has the effect that the photocatalyst can be easily transferred to the surface of the molded article during the injection molding process.

The invention according to claim 2 is the transfer sheet according to claim 1, characterized in that the photocatalyst is in the form of powder particles composed of titanium dioxide or a mixture of titanium dioxide and activated carbon. Can be easily transferred to any object. Also, it has the effect that the photocatalyst can be easily transferred to the surface of the molded article during the injection molding process.

According to a third aspect of the present invention, the outer dimensions of the photocatalyst in the form of powder particles are 0.01 μm to 10 μm.
The transfer sheet according to claim 2, wherein the photocatalyst can be easily transferred to an arbitrary object. Also, it has the effect that the photocatalyst can be easily transferred to the surface of the molded article during the injection molding process.

The invention according to claim 4 is a transfer sheet characterized in that a release agent is applied to the surface of a sheet base material, and a photocatalyst is embedded in the release agent. And the effect of reducing the amount of photocatalyst used.

The invention according to claim 5 is a transfer sheet characterized in that a release agent is applied to the surface of a sheet base material, and a photocatalyst is printed on the surface of the sheet base material. It has the effect of being transferred to an object.

The invention according to claim 6 is a transfer sheet characterized in that a release agent is applied to the surface of a sheet base material, and a mixture of a photocatalyst and an adhesive is applied on the surface of the sheet base material. It has an effect of easily transferring an adhesive material containing a to an object.

The invention according to claim 7 is characterized in that the adhesive is any one of polyvinyl alcohol, starch, a mixture of acrylic emulsion and water, rubber, vinyl chloride, or phenol resin. According to another aspect of the present invention, the transfer sheet has a function of easily transferring the adhesive containing the photocatalyst to an arbitrary object.

According to an eighth aspect of the present invention, a transfer sheet is characterized in that a release agent layer and an adhesive layer are sequentially applied on the surface of a sheet base material and a photocatalyst is embedded in the adhesive layer. It has a function of easily transferring the adhesive containing the photocatalyst to an arbitrary object.

According to a ninth aspect of the present invention, a transfer sheet having a photocatalyst on a release material applied to a sheet base material is placed in a mold, and a resin member is injection-molded on the surface of a molded product. The photocatalyst is transferred to form a resin molded product, and the photocatalyst can be easily provided on the surface of the molded product during the molding process. Further, the shape of the molded product is not restricted. In addition, it has the effect of reducing the amount of photocatalyst used.

According to a tenth aspect of the present invention, a transfer sheet having a photocatalyst on a release material applied to a sheet base material is placed in a mold, and a ceramic member is injection-molded on the surface of a molded article. The photocatalyst is transferred to form a ceramic molded article, and the photocatalyst can be easily provided on the surface of the molded article during the molding process. Further, the shape of the molded product is not restricted. In addition, it has the effect of reducing the amount of photocatalyst used.

According to an eleventh aspect of the present invention, a transfer sheet having a photocatalyst on a release material applied to a sheet base material is placed in a mold, and one of a resin member and a ceramic member is used. The injection molding method is characterized in that the photocatalyst is transferred onto the surface of the molded product at the same time as molding, and the photocatalyst can be easily disposed on the surface of the molded product during the molding process. . Further, the shape of the molded product is not restricted. In addition, it has the effect of reducing the amount of photocatalyst used.

The invention according to claim 12 is a transfer sheet characterized in that a release agent is applied to the surface of a sheet base material, and an antibacterial member is provided on the release agent. Can be easily transferred to any object. In addition, the antibacterial member can be easily transferred to the surface of the molded product during the injection molding process.

In the invention described in claim 13, the antibacterial member is prepared by dissolving the following a) silver acetate or silver nitrate in pure water and adding K2 to the solution.
SO3 and K2S2O3 are sequentially added, and a solution containing at least one of silver thiosulfato complex salt or silver salt, and (b) at least one of silver thiosulfato complex salt or silver salt is supported and adsorbed on hydrous amorphous silicon dioxide. , An antibacterial composite having an outer shell coating layer on its outer surface, c) antibacterial zeolite, d) organic arsenic-based bainazine, e) chitosan f) wormwood) hinokichi) hibari) iodoformne) metronidazole E) Silver silica gel type antibacterial agent particles w) Diphenyl ether type or silicon quaternary ammonium salt c) Mixture of zirconium phosphate and silver oxide Thi) Any compound among compounds in which isothiocyanate is used as an antibacterial component and cyclodextrin is included A single member is used.
The transfer sheet described in 2 can easily transfer the antibacterial member to an arbitrary object. In addition, the antibacterial member can be easily transferred to the surface of the molded product during the injection molding process.

According to a fourteenth aspect of the present invention, the outer size of the antibacterial member in the form of powder particles is 0.05 micrometer to.
The transfer sheet according to claim 12, wherein the antibacterial member is easily transferred to an arbitrary object. In addition, the antibacterial member can be easily transferred to the surface of the molded product during the injection molding process.

The invention according to claim 15 is a transfer sheet characterized in that a release material is applied to the surface of a sheet base material and an antibacterial member is embedded in the release material. It has the effect of improving the action and reducing the amount of the antibacterial member used.

The sixteenth aspect of the present invention is a transfer sheet characterized in that a release agent is applied to the surface of a sheet base material, and an antibacterial member is printed on the surface of the sheet base material. It has the effect of transferring to an arbitrary object.

According to a seventeenth aspect of the present invention, there is provided a transfer sheet characterized in that a release agent is applied on the surface of a sheet base material, and a mixture of an antibacterial member and an adhesive agent is applied on the surface of the sheet base material. It has an effect of easily transferring the adhesive containing the antibacterial member to an arbitrary object.

According to the eighteenth aspect of the present invention, the adhesive is made of any one of polyvinyl alcohol, starch, a mixture of acrylic emulsion and water, rubber, vinyl chloride, or phenol resin. The transfer sheet according to claim 16 has the function of easily transferring an adhesive containing an antibacterial member to an arbitrary object.

According to a nineteenth aspect of the present invention, a transfer sheet is characterized in that a release material layer and an adhesive layer are applied in sequence on the surface of a sheet base material, and an antibacterial member is embedded in the adhesive layer. It has the function of easily transferring the adhesive containing the antibacterial member to an arbitrary object.

According to a twentieth aspect of the present invention, a transfer sheet having an antibacterial member is placed on a release material applied to a sheet base material in a mold, and a resin member is injection-molded to form a surface of a molded article. The antibacterial member is transferred to the resin molded article, and the antibacterial member can be easily disposed on the surface of the molded article during the molding process. Further, the shape of the molded product is not restricted. Further, it has an effect of reducing the amount of the antibacterial member used.

According to a twenty-first aspect of the present invention, a transfer sheet comprising an antibacterial member on a release material applied to a sheet base material is placed in a mold, and a ceramic member is injection molded to obtain a surface of a molded article. The above-mentioned antibacterial member is transferred to a ceramic molded product, and the antibacterial member can be easily disposed on the surface of the molded product during the molding process. Further, the shape of the molded product is not restricted. Further, it has an effect of reducing the amount of the antibacterial member used.

According to a twenty-second aspect of the present invention, a transfer sheet having an antibacterial member on a release material applied to a sheet base material is placed in a mold, and either a resin member or a ceramic member is placed. The injection molding method is characterized in that the antibacterial member is injected onto the surface of the molded product at the same time as molding, and the antibacterial member is easily distributed on the surface of the molded product during the molding process. Set up. Further, the shape of the molded product is not restricted. Further, it has an effect of reducing the amount of the antibacterial member used.

The transfer sheet according to the embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

(Embodiment 1) FIG. 1 is an enlarged sectional view of an essential part of a transfer sheet 10 according to Embodiment 1 of the present invention and a conceptual diagram showing an example of a manufacturing method thereof.

As shown in FIG. 1, the sheet base material 2 is fed out from the feed roller 20 around which the sheet base material is wound, and the functional member 1 (one of the photocatalyst and the antibacterial member).
After the powder particles are adhered, the transfer sheet 10 is wound by the winding roller 21. The release material storage tank 23 storing the release material 3 and the release material 3 supplied from the bottom of the tank 23 are provided on the sheet substrate 2 between the delivery roller 20 and the take-up roller 21. A release agent applying roller 24 for applying to the sheet, a hopper 25 for storing the functional member 1 and spraying the functional member 1 on the sheet base material 2, and a sheet base material 2 and the functional member 1 which are located in a subsequent step of the hopper 25 And a pair of pressure rollers 26 that are sandwiched by the pressing force of.

In the present embodiment, first, 16 μm
The sheet base material 2 made of PET having a thickness of about 40 μm is fed from the feed roller 20 and moves toward the take-up roller 21. On the way, the release material 3 supplied from the release material storage tank 23,
4 is applied to one surface of the sheet substrate 2. The coating thickness of the release material 3 is 1 μm to 5 μm.

Then, a hopper 25 is placed on the three layers of the release material.
From the functional member 1, for example, photocatalyst powder particles (particle outline 1 μm to 10 μm) made of titanium dioxide or a mixture of titanium dioxide and activated carbon, etc. are dropped and supplied, and as shown in an enlarged scale in the circle of FIG. The functional member 1 is placed on the three layers of the release material.

After that, by being pressed by the pressure roller 26 in a predetermined manner, at least part of the functional member 1 (in the embodiment shown in FIG. Half) is embedded in the release material 3.

In this way, the three layers of the release material in which the functional member 1 is embedded is solidified, the functional member 1 is fixed on the sheet base material 2, and the transfer sheet 10 is manufactured. Thereafter, the transfer sheet 10 is taken up by a take-up roller 21.

In the above embodiment, the mutual relationship between the outer dimension of the functional member 1, the coating thickness dimension of the three layers of the release material, and the embedding depth dimension is arbitrary depending on the type and purpose of the constituent members. It goes without saying that it may be carried out.

Further, although the amount of the functional member to be dispersed on the release material is arbitrary, it goes without saying that the surface of the sheet base material may be uniformly and evenly covered.

When the functional member of the transfer sheet is transferred onto the surface of the object, first, the side on which the functional member is provided is placed on the object. Next, the functional member may be embedded or transferred onto the surface of the object by pressing while heating from the sheet base material side. Even if the surface of the functional member is covered with the release material by the transfer, the antibacterial member is effective.

That is, in the case of an antibacterial member, bacteria that have entered the mold release material are killed to prevent their reproduction.

Of course, the photocatalyst has the same function. This is because the release material covering the functional member is decomposed by irradiating near ultraviolet rays of 300 nm to 400 nm to expose the functional member.

(Embodiment 2) FIG. 2 is a sectional view of a main part of a transfer sheet according to Embodiment 2 of the present invention. In this case, the transfer sheet is characterized in that a release material layer and an adhesive layer are sequentially applied on the surface of the sheet base material and the antibacterial member is embedded in the uppermost adhesive layer.

In the procedure for constructing the transfer sheet 100, first, three layers of the release material are constructed on one surface of the sheet base material 2 in the same manner as in FIG.

Next, an adhesive (carrier) is laminated on the three layers of the release material.
4 layers are provided. Next, the powder particles of the functional member 1 are sprinkled and pressed to a predetermined degree so that at least a part of the functional member 1 (in the case of FIG. 2, the lower half of the functional member 1) is adhesive 4
The structure is embedded in layers.

In the second embodiment, the types of members constituting the functional member 1, the sheet base material 2 and the release material 3, the plate thickness dimension, the coating thickness and the like are the same as those in the first embodiment. Good.

As the adhesive (carrier) 4, any member such as starch or water-soluble Poval is used in an amount of 1 μm to 5 μm.
Is applied or printed in the thickness dimension of. In this way,
Adhesive (carrier) in which the powder particles of the functional member 1 are embedded
When 4 is solidified, the functional member 1 is fixed on the sheet base material 2 via the release material layer.

When the functional member of the transfer sheet is transferred onto the surface of the object, first, the side on which the functional member is arranged is placed on the object. Next, the functional member may be embedded or transferred onto the surface of the object by pressing while heating from the sheet base material side.

In this case, the functional member is an adhesive (carrier)
Is transcribed with. However, in the case of the above-mentioned very antibacterial member, bacteria that have penetrated into the adhesive are killed to prevent their reproduction. In the case of a photocatalyst, the adhesive (carrier) made of an organic substance is decomposed by the photocatalyst that has received near-ultraviolet light, and the functional member is exposed.

(Embodiment 3) FIG. 3 is a sectional view showing the main part of a transfer sheet according to Embodiment 3 of the present invention. In this case, a release material is applied to the surface of the sheet base material, and the transfer sheet is characterized in that a mixture of the antibacterial member and the adhesive material is further applied, and an adhesive containing the antibacterial member is used. It has the effect of being easily transferred to an arbitrary object.

In the third embodiment, the types of members constituting the functional member 1, the sheet base material 2 and the mold release material 3, the plate thickness dimension, the coating thickness and the like are the same as those in the first embodiment. Good.

As the adhesive (carrier) 50 containing (mixing) the powder particles of the functional member 1, any member such as starch or water-soluble poval may be used. The amount of the powder particles of the functional member, for example, the antibacterial member to be contained in the adhesive (carrier) 50 is mixed at a ratio of about 0.5% to about 10% by weight with respect to the adhesive. Also, in the case of powder particles of the photocatalyst, they are mixed at a weight ratio of about 0.5% to about 20%. The coating or printing thickness of the adhesive 50 including the functional member is set to 1 μm to 30 μm.

In this manner, when the adhesive (carrier) 4 containing the powder particles of the functional member 1 is solidified, the functional member 1 is fixed on the sheet base material 2 via the release material layer.

When the functional member of the transfer sheet is transferred onto the surface of the object, first, the side on which the functional member is arranged is placed on the object. Next, the functional member may be transferred onto the surface of the object by pressing while heating from the sheet substrate side.

In this case, the functional member is transferred together with the adhesive (carrier). However, as described above, in the case of an antibacterial member, bacteria that have entered the adhesive are killed and propagation is prevented. In the case of a photocatalyst, the adhesive (carrier) made of an organic substance is decomposed by the photocatalyst that has received near-ultraviolet light, and the functional member is exposed.

Next, a molded product provided with a functional member on its surface and a molding method therefor according to the embodiment of the present invention will be described with reference to FIGS. 4 to 7.

(Embodiment 4) FIG. 4 shows a flow chart of a method for manufacturing a molded article having a functional member on its surface.

FIG. 5 is a sectional view showing the concept of the injection molding simultaneous transfer device. FIG. 6 is a perspective view of a molded product provided with a functional member on the surface, and FIG. 7 is a sectional view taken along the line AA in FIG.

The molded article having the functional member on its surface and the molding method thereof in the fourth embodiment are configured to use the transfer sheet described in the first to third embodiments. In the following description, the transfer sheet 100 shown in FIG. 2 is described as a representative.

As shown in the manufacturing flow chart of FIG. 4, a transfer sheet is arranged in a predetermined manner in a mold for injection molding a softened (melted) member. Next, the mold is closed and either the resin member or the ceramic member is injected and molded. In this molding step, the functional member (either the photocatalyst or the antibacterial member) arranged on the surface of the transfer sheet is transferred and fixed on the surface of the molded product. Thereafter, the sheet material is peeled off from the molded article to complete the molded article.

In FIG. 5, a female mold 11 having a vent is provided.
And the male die 12 having an injection hole between the transfer sheet 10
0 is continuously supplied from a supply roll 31 via a feed roll 32, and the formed transfer sheet 100 is taken up by a take-up roll 33.

Positioning sensor marks (line segments, straight lines, crosses, etc. (not shown)) are provided on the transfer sheet 100, and these sensor marks are used as a positioning sensor 3 such as a photoelectric tube.
4 is detected and the transfer sheet 100 is arranged at a desired position with respect to the female mold 11.

Although not shown, the transfer marks are aligned not only in the direction parallel to the feed direction but also in the direction perpendicular to the feed direction by the sensor mark and the positioning sensor.

Needless to say, the positioning sensor and the sensor mark are unnecessary when the alignment between the transfer sheet and the female die is not required.

Incidentally, since the female die 11 usually has a concave cavity surface, it is called a female die. The male mold 12 is called a male mold because it has a convex cavity surface. However, it is not necessary that the female mold 11 has a cavity surface in which the female mold 11 is concave and the male mold 12 is convex, and the reverse may be possible. The point is that the female mold 11 has at least a vent hole for molding the transfer sheet, and the male mold 12 has at least an injection hole for introducing the molten resin into the mold.

Hot platen 3 loaded in the injection molding simultaneous transfer device
6 (heating device) has a configuration in which a heating adjusting material is partially disposed between the heating platen surface and the transfer sheet.

In order to heat the transfer sheet 100 using the heating plate 36, the transfer sheet 100 is fixed to the female mold 11 with the clamp 35, and the heating surface of the heating plate faces the transfer sheet and is not in contact with it. By arranging the heating plate at the position, the transfer sheet is heated and softened as desired.

In order to arrange the heating platen so that its heating surface is not in contact with the transfer sheet, the movable supporting member 42 for supporting the heating platen is used.
If the heat plate has sufficient rigidity considering the weight of the heat plate, it is only necessary to dispose the heat plate at a position facing the transfer sheet by a movable support, and the transfer sheet and the heat plate can be separated by a predetermined distance. Can be placed in separate positions.

After that, the female mold 1 is opened by the ventilation hole 13 connected to a vacuum source (not shown) provided in the female mold 11.
The transfer sheet 100 is molded by degassing the cavity space of No. 1 and bringing the transfer sheet 100 into close contact with the cavity surface of the female die 11 by air pressure. At this time, if necessary, the transfer sheet may be molded into the female mold 11 from the hot platen side together with the pressurized air blowing.

After the transfer sheet is molded, the mold is closed and the molten resin is injected into the mold. The hot platen 36 is moved upward by a driving means such as an air cylinder or a hydraulic cylinder when the mold is closed, and the hot plate 36 is compared between the molds. Thus, a molded article having the desired functional member on the surface can be obtained by using the injection molding simultaneous transfer device equipped with a hot platen.

The hot platen 36 is placed in the range of, for example, 60 to 180 degrees Celsius according to the uneven shape of the molded product.
Heat 00. In the fourth embodiment of the present invention, heating is performed at 70 degrees Celsius.

Next, the operation of simultaneous injection molding transfer will be described. First, a positioning mark is read by a positioning sensor using a transfer device for the transfer sheet 100, and the transfer sheet on the roll is fed from the feed roll 32 between the male and female dies at a predetermined pitch and stopped at a desired position.

The transfer sheet 100 is arranged so that the surface provided with the functional member (either the photocatalyst or the antibacterial member) faces the male mold 12 having the injection hole 14.

Next, the hot platen 36 heated to a predetermined temperature is pressed against the female mold 11 to sandwich the transfer sheet 100 between the female mold 11 and the hot platen 36, and the transfer sheet 100 is contactlessly held for 10 seconds. To heat. The transfer sheet 100 is about 70 degrees Celsius. Next, the transfer sheet 100 is vacuum formed by the female die 11.

Then, the hot platen 36 is retracted from between the molds,
The mold is closed, and then either the softened (melted) resin member or the ceramic member is injected to perform molding. Further, the sheet base material 2 of the transfer sheet is peeled from the obtained molded article, and a molded article having the functional member transferred to the surface is obtained.

FIG. 6 is a perspective view of a molded product having a functional member on the surface having the above structure. In addition, the cutting line A-
A sectional view taken along line A is shown in FIG.

In the first to fourth embodiments described above, as the antibacterial member, as described above, any antibacterial member in the form of liquid or powder particles may be used. For example, the outer dimensions of the antibacterial member are 0.1 μm to 100 μm, and antibacterial zeolite harmless to the human body, or chitosan, or mugwort, hinoki, hiba, isothiocyanate, metronidazole, zirconium phosphate and silver oxide It is preferable to use any one of a mixture, diphenyl ether type, silicon quaternary ammonium salt and the like.

Further, as the resin member to be injected, PS,
Any resin member such as ABS, PP, PC, acrylic resin, vinyl chloride, polyamide resin, styrene resin, and epoxy resin may be used. Of course, it may be biodegradable plastic. For example, a denatured protein member such as gluten, a member obtained by kneading denatured protein member with paper or cellulose constituting paper, an agar member, a member obtained by kneading potato starch with water, a natural polymer Novamont (trade name: Materby / Nihon Gosei Co., Ltd.) Kagaku Kogyo), Microbial Polyester ICI
(Trade name: Biopol / ICI Japan), chemically synthesized aliphatic polyester (trade name: Bionole / Showa Kobunshi), and the like may be used arbitrarily.

As the ceramic member for injection molding, any member such as alumina (Al ↓ 2O ↓ 3), silicon nitride (Si ↓ 3N ↓ 4), steatite, forsterite, zirconia, ferrite, beryllia, magnesia may be used.

[0114]

As described above, in the transfer sheet of the present invention, the functional member (either the photocatalyst or the subcontracting member) can be easily transferred and arranged on the surface of an object having an arbitrary shape.
Further, the functional member can be arranged on the surface of the molded product by being placed in a mold and simultaneously transferring by injection molding. Further, the usage amount of the functional member can be reduced.

Furthermore, molded articles provided with a functional member on the surface prevent the propagation of bacteria, and oxidize and decompose the bad odors and pollutants such as organic substances and nitrogen oxides adhering to the atmosphere or the surface. It can be removed without the use of other devices or human hands. As a result, a healthy and comfortable life is enabled. In addition, nosocomial infections can be reduced.

[Brief description of drawings]

FIG. 1 is a transfer sheet 10 according to Embodiment 1 of the present invention.
Conceptual diagram showing an enlarged cross-sectional view of an essential part of the

FIG. 2 is a sectional view of a main part of a transfer sheet according to a second embodiment of the present invention.

FIG. 3 is a sectional view of a main part of a transfer sheet according to a third embodiment of the present invention.

FIG. 4 is a flowchart of a method for manufacturing a molded product according to a fourth embodiment of the present invention.

FIG. 5 is a cross-sectional view of a main part showing a concept of a simultaneous injection molding transfer device according to a fourth embodiment of the present invention.

FIG. 6 is a perspective view of a molded article having a functional member on the surface.

FIG. 7 is a cross-sectional view of FIG. 6 taken along a cutting line AA.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Functional member (photocatalyst or antibacterial member) 2 Sheet base material 3 Release material 4,50 Adhesive (carrier) 10,100,200 Transfer sheet 11 Female type 12 Male type 13 Vent hole 14 Injection hole 20 Sending roller 21 Roll Take-up roller 23 Tank 24 Coating roller 25 Hopper 26 Pressure roller 31 Supply roll 32 Feed roll 33 Winding roll 34 Positioning sensor 35 Clamp 36 Hot platen

Claims (22)

[Claims] 1. A transfer sheet comprising a release material coated on the surface of a sheet base material, and a photocatalyst provided on the release material. 2. The transfer sheet according to claim 1, wherein the photocatalyst is in the form of powder particles made of titanium dioxide or a mixture of titanium dioxide and activated carbon. 3. The transfer sheet according to claim 2, wherein the photocatalyst in the form of powder particles has an outer dimension of 0.01 μm to 100 μm. 4. A transfer sheet comprising a release material coated on the surface of a sheet base material and a photocatalyst embedded in the release material. 5. A transfer sheet comprising a release material coated on the surface of a sheet base material and further printed with a photocatalyst. 6. A transfer sheet, characterized in that a release agent is applied to the surface of a sheet base material, and a mixture of a photocatalyst and an adhesive agent is applied on top of it. 7. The adhesive according to claim 6, wherein the adhesive is one of polyvinyl alcohol, starch, a mixture of acrylic emulsion and water, rubber, vinyl chloride, or phenol resin. Transfer sheet. 8. A transfer sheet comprising a release material layer and an adhesive layer which are sequentially applied to a surface of a sheet base material and a photocatalyst is embedded in the adhesive layer. 9. A transfer sheet comprising a photocatalyst on a release material applied to a sheet base material is placed in a mold, and a resin member is injection-molded to transfer the photocatalyst onto the surface of a molded article. Characterized resin molded product. 10. A transfer sheet comprising a photocatalyst on a release material applied to a sheet base material is placed in a mold, and a ceramic member is injection molded to transfer the photocatalyst to the surface of a molded article. Characteristic molded ceramic products. 11. A transfer sheet provided with a photocatalyst on a release material applied to a sheet base material is placed in a mold, and either one of a resin member and a ceramic member is injected to simultaneously perform molding. An injection molding method, wherein the photocatalyst is transferred onto the surface of a molded product. 12. A transfer sheet comprising a release agent applied to the surface of a sheet base material, and an antibacterial member provided on the release agent. 13. An antibacterial member having the following a) silver acetate or silver nitrate dissolved in pure water, and K2 is added to the solution.
SO3 and K2S2O3 are sequentially added, and a solution containing at least one of silver thiosulfato complex salt or silver salt, and (b) at least one of silver thiosulfato complex salt or silver salt is supported and adsorbed on hydrous amorphous silicon dioxide. , An antibacterial composite having an outer shell coating layer on its outer surface, c) antibacterial zeolite, d) organic arsenic-based bainazine, e) chitosan f) wormwood) hinokichi) hibari) iodoformne) metronidazole E) Silver silica gel type antibacterial agent particles w) Diphenyl ether type or silicon quaternary ammonium salt c) Mixture of zirconium phosphate and silver oxide Thi) Any compound among compounds in which isothiocyanate is used as an antibacterial component and cyclodextrin is included A single member is used.
2. The transfer sheet according to 2. 14. The transfer sheet according to claim 12, wherein the outer shape of the antibacterial member in the form of powder particles is 0.05 μm to 100 μm. 15. A transfer sheet comprising a release agent applied to the surface of a sheet base material, and an antibacterial member embedded in the release agent. 16. A transfer sheet comprising a release agent applied to the surface of a sheet base material, and further printed with an antibacterial member. 17. A transfer sheet, characterized in that a release agent is applied to the surface of a sheet base material, and a mixture of an antibacterial member and an adhesive agent is applied on top of the release agent. 18. The adhesive according to claim 16, wherein the adhesive is one of polyvinyl alcohol, starch, a mixture of acrylic emulsion and water, rubber, vinyl chloride, or phenol resin. Transfer sheet. 19. A transfer sheet comprising a release material layer and an adhesive layer which are successively applied on a surface of a sheet base material, and an antibacterial member is embedded in the adhesive layer. 20. A transfer sheet comprising an antibacterial member provided on a release material applied to a sheet substrate is placed in a mold, and a resin member is injection molded to transfer the antibacterial member to the surface of a molded article. A resin molded product characterized by the above. 21. A transfer sheet comprising an antibacterial member on a release material applied to a sheet base material is placed in a mold, and a ceramic member is injection molded to transfer the antibacterial member to the surface of a molded article. Ceramics molded product characterized by the above. 22. A transfer sheet comprising an antibacterial member on a release material applied to a sheet base material is placed in a mold, and one of a resin member and a ceramic member is injected to carry out molding. At the same time, the antibacterial member is transferred onto the surface of the molded product, which is an injection molding method.