JPH10329494A - Method and apparatus for transferring curved surface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently manufacture a decorative material while effectively transferring a transfer sheet to a three-dimensional convexo-concave surface. SOLUTION: A transfer layer side of a transfer sheet S having a support and a transfer layer is opposed to a convexo-concave surface side of a base material B to be transferred, and solid particles P injected from an ejector 1 are collided with the support side of the sheet. And, the sheet S is brought into pressure contact with the material B by the collision pressure. Then, in the case of releasing the support to obtain a decorative material, the particles P are collided with the sheet S, then the heated sheet S and cooling air of lower temperature than the temperature of the adhesive are sprayed at least to the support side of the sheet S to forcibly cool the sheet S and adhesive. Then, the support of the sheet S is released and removed to be effectively transferred.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to decorative panels for exterior and interior materials of houses, furniture, home appliances and the like, and more particularly to a method and an apparatus for manufacturing decorative panels having a decorative uneven surface.

[0002]

2. Description of the Related Art Conventionally, decorative boards having decorations such as pictures on a substrate surface of the decorative board by a direct printing method, a laminating method, a transfer method or the like have been used for various purposes. In this case, if the surface of the base material is flat, the decoration of the picture can be easily made, but the decoration of the pattern is applied to the uneven surface by a special device. For example, in the case of a columnar shape such as a window frame or a surface border material, the base material decoration surface is a two-dimensional unevenness (a shape having a curvature only in one direction (a direction perpendicular to the generating line or the height direction) like a cylinder). One applicable curved surface decoration technique is proposed in Japanese Patent Publication No. 61-5895. That is, the technology of the publication is a surface decoration method by a laminating method, in which a surface-coated sheet coated with an adhesive on one side is supplied, while the base material is horizontally conveyed at a speed synchronized with a supply speed of the surface-mounted sheet, and is installed side by side. While maintaining the state in which the end of the facing sheet is not adhered by the large number of holding jigs, the adhesive-applied surface side of the facing sheet is gradually pressed against the base material for each small area, and the It is to be adhered by heating to the material surface. This method is called a lapping method. Japanese Patent Application Laid-Open No. 5-139097 proposes a curved surface decoration technique applicable to the case where the surface unevenness is a three-dimensional unevenness such as an embossed shape (that is, a shape having a curvature in two directions like a hemisphere). Have been. That is, the technology of the same publication is a surface decoration method by a transfer method, a thermoplastic resin film is used as a support of a transfer sheet, and a release layer, a pattern layer, and an adhesive layer are sequentially provided on the support. The transfer sheet is placed on a substrate having an uneven surface, and is pressed from the back surface of the support with a heat roller made of rubber having a rubber hardness of 60 ° or less to transfer a picture, thereby obtaining a decorative plate. Further, a foamed layer which foams by heat during transfer is provided between the support and the release layer, and the foaming is also utilized to follow the uneven surface of the substrate.

[0003]

However, in the above-described conventional method, the technique disclosed in Japanese Patent Publication No. 61-5895 can only handle a two-dimensional curved surface. Although the technology proposed in Japanese Patent Application Publication No. H08-27139 can handle three-dimensional curved surfaces, it basically uses elastic deformation of the rotating heat roller by rubber to follow the surface irregularities. Not applicable to irregularities. In addition, the soft rubber roller is liable to be worn by the corners of the unevenness of the transfer-receiving substrate. Also,
In a configuration in which the foam layer is provided on the transfer sheet, the transfer sheet becomes too complicated and expensive. In addition, there is a problem that the substrate is limited to a flat substrate as a whole.

Accordingly, the present invention provides a decorative material which can be reliably transferred to a large three-dimensional uneven surface and has excellent surface decorativeness, and does not require a specially shaped jig for pressing the transfer pressure.
An object of the present invention is to provide a method and an apparatus for transferring a curved surface, which do not require replacement due to wear of parts such as rubber rollers.

[0005]

In order to solve the above-mentioned problems, the curved surface transfer method according to the present invention employs, as a means for pressing a transfer sheet including a support and a transfer layer against a transfer-receiving substrate by pressing the transfer sheet. Solid particles collided with the support side of the transfer sheet, and the collision pressure was used. That is, the transfer layer side of the transfer sheet including the support and the transfer layer is opposed to the uneven surface side of the transfer-receiving base material having the uneven surface, and solid particles collide with the support side of the transfer sheet, and the collision pressure Using
The transfer sheet is pressed onto the uneven surface of the transfer substrate, and after the transfer layer adheres to the transfer substrate, the support of the transfer sheet is peeled off to transfer the transfer layer to the transfer substrate. I made it. At this time, by heating, the heat softened state of the transfer sheet,
Alternatively, in one or both states of the heat-activated state of the adhesive, the transfer layer of the transfer sheet is bonded to the uneven surface of the transfer-receiving substrate, and then, the transfer-receiving substrate and the transfer-receiving substrate are bonded to each other. The transfer sheet is passed through a cool air area, and in the cool air area, a cooling gas having a temperature lower than the temperature of the heated transfer sheet or / and the adhesive is sprayed on at least the support side of the transfer sheet to transfer the transfer sheet or / and After cooling the adhesive, the transfer sheet support was peeled off. As a result, the transfer layer can be reliably transferred without the transfer layer being peeled off together with the support when the support is peeled off. Further, the curved surface transfer apparatus of the present invention is an apparatus used for performing the curved surface transfer method, and includes at least a solid particle ejecting unit for ejecting solid particles, and a cool air after colliding the solid particles with the transfer sheet. In the area, a cooling gas lower than the temperature of the heated transfer sheet or / and the adhesive,
Blowing at least onto the support side of the transfer sheet, cooling air blowing means for cooling the transfer sheet or / and the adhesive, and transporting the substrate to be transferred to a position facing the solid particle ejection means,
Then, an apparatus having a configuration including: a base material conveying unit that conveys the transfer sheet to a position facing the cool air blowing unit in the cool air area; and a sheet supply unit that positions the transfer sheet between the solid particle ejection unit and the transfer target substrate. did.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the method and apparatus for transferring a curved surface according to the present invention will be described below. First, FIG. 1 is a conceptual diagram showing one embodiment of the present invention. In FIG. 1, the solid particles P are ejected from the ejector 1 as the solid particle ejecting means in a substantially vertical downward direction, and are ejected toward the support of the transfer sheet S. The substrate B to be transferred has a flat envelope shape, and the uneven surface, which is the surface to be transferred, is directed horizontally and upwards. Conveyed from right to left. Then, the transfer sheet S composed of the support and the transfer layer is supplied so that the transfer layer side faces the uneven surface side of the transfer-receiving substrate located below.

Then, the solid particles P ejected from the ejector 1
Collides with the support side of the transfer sheet. As a result, the transfer sheet is pressed against the uneven surface of the substrate to be transferred by the collision pressure of the solid particles, and the transfer layer of the transfer sheet adheres to the uneven surface of the substrate to be transferred. In this case, in the present invention, the transfer layer is adhered to the substrate to be transferred in one or both states of heating and softening the transfer sheet or heating and activating the adhesive by heating.

[0008] The heat softening of the transfer sheet is carried out by using a thermoplastic resin sheet or the like as the transfer sheet so as to follow the shape of the uneven surface of the substrate to be transferred and to form the transfer sheet so that the transfer sheet can be stretched. It is. If the transfer sheet has the property of expanding at room temperature, such as a rubber film, heating softening is not necessarily required.

On the other hand, the heat activation of the adhesive is performed at least when an adhesive using heat is used for the development of the initial adhesive force.
Performed when heating to develop adhesive strength. Such an adhesive is a heat-sensitive adhesive or the like. There are various types of heat-sensitive adhesives, and specifically, for example, a heat-sealing adhesive (heat-sensitive adhesive). In the heat-sensitive adhesive, from the state in which the transfer layer and the transfer-receiving substrate are in contact with the adhesive in a heat-activated state, the adhesive is cooled, so that at least initial bonding is completed. The final adhesive strength. If the adhesive is, for example, an ultraviolet curable adhesive that is liquid at room temperature,
If the adhesive is cured and irradiated only by ultraviolet irradiation, heat activation of the adhesive is not necessary. The adhesive for adhering the transfer layer to the transfer substrate is applied as a part of the transfer layer on the transfer sheet side, or applied to the transfer substrate, or applied to both. . As a special case, a transfer sheet having a transfer layer to which no adhesive is applied, that is, a transfer layer having no adhesive layer and in which the transfer layer itself also functions as an adhesive layer such as a decorative layer in the transfer layer If used, the decorative layer and the like are also adhesives to be heat-activated in the present invention.

[0010] Then, depending on the combination of the transfer sheet to be used and the adhesive to be used, the transfer layer is formed in one or both of the heat-softened state of the transfer sheet and the heat-activated state of the adhesive. It will adhere to the substrate to be transferred. As described above, when the transfer sheet and / or the adhesive is heated when the transfer sheet is pressed against the transfer base material by the collision pressure, after the transfer sheet is bonded to the transfer base material, the transfer sheet and / or the adhesive is heated. By forcibly cooling the adhesive, the support of the transfer sheet can be peeled off more quickly, and reliable transfer can be performed without causing a transfer failure such as transfer omission where a part of the transfer layer is not transferred. Therefore, according to the present invention, when the transfer sheet and / or the adhesive is heated, after the transfer sheet is bonded to the transfer target substrate, the transfer target substrate and the transfer sheet are passed through a cool air area for cooling by blowing cool air. Thus, reliable transfer can be performed smoothly.

For this reason, in the present invention, at least the transfer from the cool air blowing means 4 is performed in the cool air area 3 until the support of the transfer sheet is peeled off from the substrate to be transferred by the peel roller 5 or the like after the application of the collision pressure. Cold air is blown against the support side of the sheet to forcibly cool the heated transfer sheet or adhesive. The cool air blowing means 4 blows out a pressurized gas such as air from a blower or a compressor (not shown) toward the transfer sheet support. The cool air blowing means 4 is, specifically, a gas blowing nozzle such as a slit nozzle having a rectangular opening or a nozzle having a circular opening, from which gas is ejected, or a fan.

The promotion of cooling by forced cooling promotes the fixation of the transfer sheet formed following the inside of the concave portion of the uneven surface of the substrate to be transferred, and when the transfer sheet has a restoring force after releasing the collision pressure, the transfer is performed. Prevents the sheet from returning to its original shape. Further, by this, after the heating becomes unnecessary, the support can be separated and removed more quickly, and the production speed can be improved. Also, if the support is peeled off too early, the transfer sheet is adhered in a heated and softened state. In some cases, the film breaks and is not easily peeled.
In the case where the adhesive is bonded in a heat-activated state,
If the adhesive does not exhibit a sufficient adhesive force to the extent that the transfer layer remains on the transfer substrate side, the transfer layer will not remain on the transfer substrate and will not be transferred. After bonding by heat fusion of the adhesive,
The adhesive must be cooled to a high viscosity enough to develop the desired adhesive strength or must be solidified. If the adhesive strength is insufficient at the time of peeling the support, transfer omission such as not transferring the transfer layer occurs. The transfer omission can be prevented by forced cooling of the adhesive.

[0013] The temperature of the gas for cooling (hereinafter referred to as cooling gas) is lower than the temperature at the time of bonding. In addition, if there is natural cooling due to heat radiation or the like before the separation, the temperature is set to a low enough temperature to cool the support to a temperature at which the support can be separated by the cooling including the natural cooling. The temperature setting of the cooling gas depends on the type of the heat-sensitive adhesive, for example, when the adhesive is heated and activated, but in the case of a normal heat-fusion adhesive (heat-sensitive adhesive), it is approximately 80 ° C.
It is as follows. In the case where the support is peeled off manually without using a mechanical operation such as a peeling roller, the temperature is set to approximately 50 ° C. or less in order to prevent burns. However, when air at normal temperature is used as the gas to be blown, it is not necessary to use the gas heated forcibly as the cooling gas. The above is a description of the high-temperature side that can act as a cooling gas. Further, as can be understood from the above, the cooling gas also explains that it is not necessary to forcibly cool air at room temperature to cool the temperature. Of course, for faster cooling, a gas that has been forcibly cooled may be used.

Next, FIG. 2 shows an arrangement example when a blowing nozzle is used as the cool air blowing means, as viewed from above the transfer sheet. The arrangement shown in the figure is a case where a continuous belt-shaped transfer sheet S is conveyed with its support surface horizontal. The blowing nozzles 4a to 4c are formed of, for example, slit nozzles so that the gas to be blown out forms a band. FIG. 2A shows an example in which the blowing nozzles 4a to 4c are arranged at intervals in parallel with the width direction of the transfer sheet, and normally blow cold air vertically downward. FIG.
(B) is an example of an arrangement suitable for blowing solid particles remaining on a transfer sheet support together with forced cooling by blowing cool air. The spray nozzles 4d are arranged in parallel to the width direction of the transfer sheet, and a plurality (three or more) of the spray nozzles 4e and 4f are obliquely different from each other, and the spray nozzles 4e are arranged at the center in the width direction. And 4f are arranged side by side at intervals in the transport direction such that the areas where the gas from 4f hits the transfer sheet overlap in the width direction. The direction of the blowing of the blowing nozzle 4d is tilted vertically downward toward the downstream side, and the direction of the blowing of the blowing nozzles 4e and 4f is tilted vertically downward toward the end in the width direction and the upstream direction. With the spray nozzles 4e and 4f, the solid particles are blown off from the center in the width direction of the transfer sheet toward the end. The solid particles that have not yet moved to the end are blown again toward the end by the downstream spray nozzle, fall down from the end, and are removed from the transfer sheet.

The arrangement of the spray nozzles (gas blowing direction, number of spray nozzles, arrangement direction, etc.) is not limited to the example shown in FIG. In addition, although not shown, the two blowing nozzles are installed on the upstream side and the downstream side so that the longitudinal direction of the nozzles is oriented in the width direction (like 4a and 4d in FIG. 2). The wind direction of the downstream nozzle is directed in the downstream direction in the same manner as 4d in FIG. Further, the cold air may be blown not from the transfer sheet side as shown in FIGS. 1 and 2 but from the transfer substrate side (not shown), or both may be used in combination. When the heat capacity of the substrate to be transferred is large, it is preferable to use both the blowing of cold air from the side of the transferring substrate and the blowing of cold air from the side of the transfer sheet in terms of cooling speed and efficiency.

The space in the cool air area where the cool air is blown onto the transfer sheet may be separated from the surroundings by a chamber or the like (FIG. 12) or may not be separated (FIG. 1). However, if solid particles remain on the transfer sheet support or on the side surface of the substrate to be transferred, the solid particles are scattered into the surrounding working environment by blowing cold air. In this case, the cooling air blowing also removes solid particles. In addition,
Isolation is advantageous not only for maintaining the working environment but also for the recovery and reuse of solid particles. In the case of isolation, the isolation may be all or part of the cold air area. For example, the upstream side of the cool air area is isolated, and the forced cooling on the downstream side after the completion of solid particle removal together with the forced cooling is a space that is opened without isolation. With the open space, it is possible to save the trouble of pressure adjustment such as making the pressure in the chamber an appropriate negative pressure with respect to the outside. Also, in combination with forced cooling by a cool air area, during application of the collision pressure, cooling is performed by using cooling solid particles without releasing the collision pressure, or using a cooling fluid when using a solid particle acceleration fluid. Is also good. When the heat capacity of the transfer substrate is large, in addition to the cooling solid particles and the cooling fluid, the low-temperature fluid is sprayed in the cooling area or during the application of the collision pressure, and the rollers for transporting the substrate and the belt conveyor are cooled. Thereby, the substrate to be transferred can be cooled from the back surface. As the gas used as cold air, air is the easiest to handle and is inexpensive, but other gases can also be used. For example, when the heat-fusible adhesive is further cured by ionizing radiation after the initial bonding, an inert gas such as nitrogen, argon, carbon dioxide, or chlorofluorocarbon may be used to prevent curing inhibition. As a method for cooling the gas, a method of passing through a heat exchanger, adiabatically expanding compressed air, or utilizing heat of vaporization when vaporizing from a liquid (in the case of CFCs) is used.

Hereinafter, the present invention will be described in more detail.

[Substrate to be Transferred] First, as the substrate to be transferred B of the present invention, the surface to be transferred can of course be applied to a flat surface. In particular, the substrate to be transferred has three-dimensional irregularities. Conventional rotary contact holding jig
No. 1-5895) or a transfer roller made of rubber (see the above-mentioned Japanese Patent Application Laid-Open No. Hei 5-13997) essentially has directionality due to the rotation axis thereof, and therefore, the applicable surface irregularity shape is limited. Be constrained. That is, the former is limited to two-dimensional irregularities having a curvature only in one axial direction, and the latter is capable of transferring to three-dimensional irregularities having a curvature in two axial directions, but the three-dimensional shape is in any direction. Cannot be applied homogeneously. For example, unless the longitudinal direction of the wood grain conduit pattern is parallel to the feed direction of the transfer sheet, it cannot be successfully transferred to the concave portion of the conduit. Moreover, in the latter case, the shape of the base material is practically limited to a flat plate shape, and otherwise, it is impossible unless a transfer roller having a special shape tailored to each base material shape is used. However, in the present invention, as described later, since the collision pressure of a group of solid particles that can behave fluidly is utilized, the planar direction of the pressure application region is essentially required for the three-dimensional shape of the surface irregularities. Do not have. (This directionality is the direction of the temporal position change of a point on the transfer-receiving substrate to which pressure is applied.) Therefore, a shape having irregularities in the transfer direction of the transfer sheet or the transfer-receiving substrate is considered. The substrate to be transferred may be used. In other words, it means that the present invention can be applied to two-dimensional unevenness having unevenness only in one direction such as only the feed direction or width direction, and three-dimensional unevenness having unevenness in two directions such as both the feed direction and the width direction. The point that the collision pressure of the solid particles does not have any direction is that the ejector that ejects the solid particles is moved so that the sheet-by-sheet transfer sheet is placed on the substrate to be transferred and pressed into contact one by one. Alternatively, it can be easily understood by considering the manner in which the transfer sheet and the transfer-receiving substrate are moved with the ejector fixed to move the region to which the collision pressure is applied.

The base material to be transferred is not limited to a flat plate material (envelope surface shape) as a whole, but has a two-dimensional unevenness whose cross section is convex or concave in an arc shape and curved in the feeding direction or width direction. The curved surface may have finer three-dimensional surface irregularities. In the present invention, it is possible to arbitrarily determine whether to transfer the two-dimensional irregularities such as the arc shape of the base material to be transferred, for example, in the width direction or in the feed direction, in consideration of workability and the like. Further, a transferred substrate having an uneven surface superimposed on large pattern unevenness and having fine unevenness, or a transferred substrate having a surface to be transferred to the bottom of the concave portion or the inner surface of the concave portion of the uneven surface is also possible. The large irregularities and the fine irregularities are, for example, as shown in FIG. 13B, the irregularities of the substrate to be transferred are composed of large irregularities 401 and 402 and minute irregularities 403 on the convex portions 402. The large irregularities have a step of 1 to 10 mm, the width of the concave is 1 to 10 mm, and the width of the convex is 5 mm or more. The fine irregularities are large irregularities in both the step and the width. Specifically, the step is about 0.1 to 5 mm, the width of the concave portion and the width of the convex portion are 0.1 mm or more, and is less than about １ ／ of the width of the convex portion having a large irregular shape. Specific examples of the uneven pattern of the decorative material having a combination of large irregularities and fine irregularities and having three-dimensional surface irregularities include, for example, tiles and bricks having joints and grooves as large irregularities. , Stones and other two-dimensional array patterns, and fine irregularities on the spray-painted surface such as stucco and lysine, as well as stones such as cleaved surfaces of granite and stone surfaces such as travertine marble boards Wood-grained uneven pattern with a contoured pattern, or a large-sized uneven pattern, such as a paneling pattern having grooves, grooves, saury, sane, etc., a floating wood grain pattern, and a conduit groove, a hairline, etc. as fine irregularities thereon Is mentioned. In addition, each surface which forms the uneven surface is not limited to a flat surface, may be a curved surface alone, or may be a combination of a flat surface and a curved surface. Therefore, the curved surface on the substrate to be transferred according to the present invention also means a concavo-convex surface having no curved surface composed of only a plurality of flat surfaces, such as a tooth profile of a clog. Further, the curvature in the present invention includes a case where the curvature is infinite (the radius of curvature = 0) which is angular like the periphery of a side or a vertex of a cube. In order to make the surface of the substrate to be transferred into a desired unevenness, a pressing process, an embossing process, an extrusion process, a cutting process, a forming process, or the like may be used.

The material of the substrate to be transferred is arbitrary.
Non-porcelain ceramic plates such as calcium silicate plate, extruded cement plate, ALC (lightweight foamed concrete) plate, GRC (glass fiber reinforced concrete) plate, veneer veneer, wood plywood, particle board, or wood Wood plates such as medium density fiberboard (MDF), metal plates such as iron, aluminum and copper, ceramics such as ceramics and glass,
A resin molded product such as polypropylene, ABS resin, and phenol resin may be used. When a liquid is used as a solid particle accelerating fluid and solid particles are ejected together with the liquid as described later, a substance that is insoluble and non-absorbable in the liquid is preferable. For example, a metal plate, a resin molded product, ceramics such as ceramics and glass, and the like are used. In addition, these transfer receiving substrate surfaces are coated in advance with an easy-adhesion primer for assisting the adhesion with the adhesive, or a sealer agent for sealing and sealing fine irregularities and porosity on the surface. Is also good. A resin such as an isocyanate, a two-part curable urethane resin, an epoxy resin, an acrylic resin, or a vinyl acetate resin is applied as an easy-adhesion primer or a sealer.

[Transfer Sheet] The transfer sheet S is composed of a support and a transfer layer that transfers and transfers. The transfer layer comprises at least a decorative layer. Further, the adhesive may be formed on the transfer sheet as an adhesive layer that becomes a part of the transfer layer. When a liquid is used as the solid particle acceleration fluid and solid particles are ejected together with the liquid, an insoluble substance for the liquid is used for the support and the transfer layer. For example, if the liquid is water, except for the water-soluble resin and the like, it may be appropriately selected and used from materials used as general transfer sheets according to the following.

(Support) When the substrate to be transferred has a two-dimensional uneven surface, the support has a non-stretchable paper (however, when the solid particle accelerating fluid is a liquid, It is possible to use an insoluble material), but in order to apply the present invention to a three-dimensional uneven surface exhibiting its true value, a stretchable support is used at least at the time of transfer. Due to the stretchability, when the collision pressure of the solid particles is applied, the transfer sheet can be closely adhered and transferred to the inside of the concave portion on the surface of the transfer-receiving substrate. The stretchability of the entire transfer sheet is mainly governed by the stretchability of the support. Therefore, in addition to a conventionally known thermoplastic resin film, a rubber film that can be stretched even at normal temperature can be used as the support.
In the case of a thermoplastic resin film, when forming a transfer layer such as a decorative layer, there is almost no stretchability, and during transfer, a sufficient stretchability is exhibited by heating, and after cooling, the deformed shape is maintained, and the shape due to elasticity is maintained. As a transfer sheet that does not cause restoration, a transfer sheet that can be used in the present invention can be prepared as easily as a conventionally known ordinary transfer sheet. As a specific example of the support, in terms of stretchability, a biaxially stretched polyethylene terephthalate film, which has been widely used in the past, can provide sufficient and sufficient stretchability by setting heating conditions, collision pressure conditions and the like depending on the surface unevenness. Because it can be expressed, curved surface transfer is possible, but low temperature, low pressure, easy to develop stretchability, for example, polybutylene terephthalate, or copolymer polyester film such as terephthalate isophthalate copolymer, polypropylene film, polyethylene Films, polyolefin-based films such as polymethylpentene films, low-stretch or non-stretch films such as polyvinyl chloride resin films and nylon films, and rubber (elastomer) films such as natural rubber, synthetic rubber, urethane elastomers, and olefin-based elastomers Favorable support It is. The thickness of the support is usually from 20 to 200 μm.

When a liquid is used as the fluid for accelerating the solid particles, a resin film which swells but is insoluble in the liquid in contact with the transfer can be used. As an example of such a swellable and insoluble resin film, when water or an aqueous solution is used as a liquid, see JP-A-54-1.
No. 50208, JP-B-61-3276, etc. are polyvinyl alcohol-based films having an average degree of polymerization of 300 to 3000 and a degree of saponification of 65 to 97 m.
ol%, and a film having a thickness of 20 to 200 μm is typical. The support may be provided with a release layer on the transfer layer side, if necessary, in order to improve the releasability from the transfer layer. The release layer is removed together with the support from the transfer layer when the support is released. As the release layer, for example, a simple substance such as a silicone resin, a melamine resin, a polyamide resin, a urethane resin, a polyolefin resin, a wax, or a mixture containing these is used.

If an uneven pattern is provided on the surface of the support that is in contact with the transfer layer, the uneven pattern can be formed on the surface of the transfer layer after transfer. The uneven pattern is, for example,
There are hairline, line-shaped groove, uneven pattern of cleavage face of granite, wood grain conduit groove, wood grain ring pattern, cloth texture surface texture, skin squeezing, characters, geometric pattern and so on. The formation of the concavo-convex pattern is performed by embossing, sandblasting, or hairline processing the resin sheet of the support by hot pressing, or forming the ink (2) using a resin having a releasing property as a binder on the support. Liquid curable urethane, silicone resin, melamine resin, polyfunctional acrylate or methacrylate monomer or prepolymer cross-linkable by ultraviolet light or electron beam) to form a desired concavo-convex pattern by silk-screen printing or the like. There is a method of providing a shape layer and using it as a support having a shape layer. The shaping layer has the function of the release layer.

(Transfer Layer) The transfer layer is composed of at least a decorative layer, and a release layer, an adhesive layer and the like may be a component of the transfer layer as appropriate. In the configuration having the adhesive layer, it is possible to omit applying the adhesive to one or both of the transfer sheet and the substrate to be transferred at the time of transfer. The decoration layer is gravure printing,
Conventionally known methods such as silk screen printing and offset printing, a pattern layer printed with a pattern or the like with a material, aluminum,
A metal thin film layer or the like in which a metal such as chromium, gold, silver or the like is partially or entirely formed by using a known vapor deposition method or the like. As the pattern, according to the surface irregularities of the transferred substrate, wood pattern, stone pattern, cloth pattern, tile pattern, brick pattern, leather pattern, letters, geometric pattern,
Use solid on the whole surface. The picture layer ink is composed of a vehicle such as a binder, a coloring agent such as a pigment or a dye, and various additives appropriately added thereto. As the binder, an acrylic resin, a vinyl chloride-vinyl acetate copolymer, a polyester resin, a cellulosic resin, a polyurethane resin, a fluororesin, or the like, or a mixture containing them is used. As the pigment of the colorant, inorganic pigments such as titanium white, carbon black, red iron oxide, graphite, and ultramarine blue, and organic pigments such as aniline black, quinacridone, isoindolinone, and phthalocyanine blue are used. Conventionally, a release layer is provided between the support or the release layer and the decorative layer to adjust the releasability between the decorative layer and to protect the surface of the decorative layer after transfer. This is the same as a known transfer sheet. In addition, this release layer is transferred to the transfer-receiving substrate side together with the decoration layer at the time of transfer,
Cover the surface of the decorative layer. Further, as a means for easily removing air remaining between the transfer sheet and the transfer-receiving substrate at the time of transfer, a large number of small holes penetrating all layers of the transfer sheet may be formed in the transfer sheet as necessary. .

[Adhesive] The adhesive may be used as an adhesive layer constituting a transfer layer of a transfer sheet or as an adhesive layer on a substrate to be transferred, before or immediately before transfer, by online coating or offline coating. Apply in. When applied to a substrate to be transferred, the adhesive layer of the transfer sheet transfer layer can be omitted. The adhesive used is
The liquid may be appropriately selected depending on the use, required physical properties, and the like. As the adhesive used, for example,
Sensitivity with heat-sensitive adhesive, moisture-curable heat-sensitive adhesive, hot-melt adhesive, moisture-curable hot-melt adhesive, two-part curable adhesive, ionizing radiation-curable adhesive, water-based adhesive, or adhesive Various adhesives such as a pressure-sensitive adhesive can be used. When water is used for the solid particle accelerating fluid, a moisture-curable adhesive or an aqueous adhesive should be avoided. As the heat-sensitive adhesive, any of a heat-sealing adhesive using a thermoplastic resin and a thermosetting adhesive using a thermosetting resin can be used. However, from the viewpoint that the bonding is completed in a short time, a heat fusion type (heat-sensitive adhesive) is preferable. The adhesive may be diluted with a solvent or without a solvent, or may be a liquid or a solid at room temperature. In the case of an adhesive other than a pressure-sensitive adhesive exhibiting tackiness, a transfer layer can be formed with only a single adhesive layer. If a coloring agent such as a pigment is added to the adhesive layer, it can be said that the entire layer is a decorative layer composed of a solid ink layer.

Various types of adhesives can be used as described above. Among them, the adhesives activated by heating include a heat-sensitive adhesive, a hot-melt adhesive, a moisture-curable heat-sensitive adhesive, and a moisture-curable hot adhesive. It is a heat-sensitive adhesive such as a melt adhesive. In addition, among the thermosetting adhesives and the ionizing radiation-curable adhesives, adhesives which are solid when uncured and have a property of exhibiting thermoplasticity at normal temperature and which can be heated and used can be used. In this case, after the initial bonding is performed by heat fusion, before or after the support is removed, the chemical reaction is completed, and the adhesive is cured and finally bonded.

Examples of the heat-sensitive adhesive include polyvinyl acetate resin, vinyl chloride-vinyl acetate copolymer, acrylic resin, thermoplastic polyester resin, thermoplastic urethane resin, and polyamide obtained by polycondensation of dimer acid and ethylenediamine. A conventionally known adhesive such as a resin can be used. As the thermosetting adhesive, a phenol resin, a urea resin, a diallyl phthalate resin, a thermosetting urethane resin, an epoxy resin, or the like can be used.

A moisture-curable heat-sensitive adhesive is also a kind of heat-sensitive adhesive. The moisture-curable heat-sensitive adhesive is applied immediately before transfer from the viewpoint of work stability, because the curing reaction proceeds with moisture in the air when left to stand naturally. Immediately after transfer, the moisture-curable heat-melt adhesive has the same adhesive strength as a normal heat-melt adhesive, but the cross-linking / curing reaction gradually proceeds with moisture in the air when left naturally, It is excellent in heat resistance without creep deformation and heat melting, and a large adhesive strength can be obtained. However, in order to promote the crosslinking and curing of the adhesive by moisture after the transfer is completed, the decorative board after the transfer is left to cure in air containing moisture. Preferable atmospheric conditions for curing are generally about 50% RH or more in relative humidity and 10 ° C in temperature.
That is all. When the temperature and the relative humidity are both higher, the curing is completed in a shorter time. The standard curing completion time is usually about 10 hours in an atmosphere of 20 ° C. and 60% RH.

The moisture-curable heat-sensitive adhesive is a composition containing a prepolymer having an isocyanate group at a molecular terminal as an essential component. The prepolymer is usually a polyisocyanate prepolymer having one or more isocyanate groups at both molecular terminals, and is a solid thermoplastic resin at normal temperature. Isocyanate groups react with each other due to moisture in the air to cause a chain extension reaction, and as a result, a reactant having a urea bond in a molecular chain is generated,
The urea bond further reacts with the isocyanate group at the molecular terminal, causing a biuret bond and branching to cause a crosslinking reaction. Although the skeleton structure of the molecular chain of the prepolymer having an isocyanate group at the molecular terminal is arbitrary, specific examples include a polyurethane skeleton having a urethane bond, a polyester skeleton having an ester bond, and a polybutazine skeleton.
Adhesive properties can be adjusted by appropriately employing one or more of these skeletal structures. If a urethane bond is present in the molecular chain, the terminal isocyanate group also reacts with the urethane bond to form an allophanate bond, which also causes a cross-linking reaction.

Specific examples of the polyisocyanate prepolymer include, for example, an isocyanate group at a molecular terminal obtained by reacting an excess polyisocyanate with a polyol;
There is a urethane prepolymer having a polyurethane skeleton having a urethane bond in a molecular chain. Also, Japanese Unexamined Patent Publication No.
No. 14287, a polyester skeleton and a polybutadiene skeleton obtained by adding a polyester polyol and a polyol having a polybutadiene skeleton in an arbitrary order to a polyisocyanate and subjecting them to an addition reaction are bonded by a urethane bond. Crystalline urethane prepolymer having an isolated structure and having an isocyanate group at the molecular terminal, or a molecule obtained by reacting a polycarbonate polyol with a polyisocyanate as disclosed in JP-A-2-305882. A polycarbonate-based urethane prepolymer having two or more isocyanate groups therein, a polyester-based urethane prepolymer having two or more isocyanate groups in a molecule obtained by reacting a polyester polyol and a polyisocyanate, and the like. It is.

As the moisture-curable heat-sensitive adhesive, other than the above-mentioned various polyisocyanate prepolymers,
In order to adjust various physical properties, various auxiliary materials such as a thermoplastic resin, a tackifier, a plasticizer, and a filler can be further added to the above-mentioned essential reaction components, if necessary. As these auxiliary materials, for example, ethylene-vinyl acetate copolymer,
Low molecular weight polyethylene, modified polyolefin, atactic polypropylene, linear polyester, thermoplastic resin such as ethylene-ethyl acrylate (EAA), terpene-phenol resin, tackifier such as rosin abietic acid ester, calcium carbonate, barium sulfate, silica ,
Fillers (extenders) composed of fine powders such as alumina, coloring pigments, curing catalysts, moisture removers, storage stabilizers, antioxidants and the like.

The ionizing radiation-curable resin which can be used as the ionizing radiation-curable adhesive is a composition curable by ionizing radiation, and specifically includes a radical polymerizable unsaturated bond or a cationic polymerizable functional group in the molecule. A prepolymer (including a so-called oligomer) having a group and / or a composition which is appropriately mixed with a monomer and which can be cured by ionizing radiation is preferably used. These prepolymers or monomers are used alone or as a mixture of two or more.

The above prepolymer or monomer specifically has a radical polymerizable unsaturated group such as a (meth) acryloyl group or a (meth) acryloyloxy group, a cationic polymerizable functional group such as an epoxy group in the molecule. Consisting of a compound having Further, a polyene / thiol prepolymer based on a combination of polyene and polythiol is also preferably used. In addition, for example, a (meth) acryloyl group is
Acryloyl group or methacryloyl group,
(Meth) acrylate means acrylate or methacrylate. Examples of the prepolymer having a radical polymerizable unsaturated group include polyester (meth) acrylate, urethane (meth) acrylate, epoxy (meth) acrylate, melamine (meth) acrylate, and triazine (meth) acrylate.
A molecular weight of about 250 to 100,000 is usually used. Examples of the monomer having a radical polymerizable unsaturated group include monofunctional monomers such as methyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, and phenoxyethyl (meth) acrylate. As polyfunctional monomers, diethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, trimethylpropane tri (meth) acrylate, trimethylolpropane ethylene oxide tri (meth) acrylate, dipentaerythritol penta (meth) acrylate And dipentaerythritol hexa (meth) acrylate. Examples of prepolymers having a cationically polymerizable functional group include prepolymers of epoxy resins such as bisphenol epoxy resins and novolak epoxy compounds, and vinyl ether resins such as fatty acid vinyl ethers and aromatic vinyl ethers. Examples of the thiol include polythiols such as trimethylolpropane trithioglycolate and pentaerythritol tetrathioglycolate. Examples of the polyene include those obtained by adding allyl alcohol to both ends of a polyurethane made of a diol and a diisocyanate.

If necessary, a thermoplastic resin such as a vinyl chloride-vinyl acetate copolymer, polyvinyl acetate, an acrylic resin, or a cellulose resin may be added to the ionizing radiation-curable resin. If used without adding a diluting solvent, it becomes a hot melt adhesive.

When the ionizing radiation-curable adhesive is used after being activated by heating, the ionizing radiation-curable adhesive which is uncured and is solid at room temperature and exhibits thermoplasticity is bonded to a heat-fusion adhesive (heat-sensitive adhesive). Adhesive), and also used as a cross-linking and curing type adhesive. The adhesive is initially bonded by heat fusion and then crosslinked and cured by irradiation with ionizing radiation. The “normal temperature” in the present invention means the ambient temperature in a room (or outside the room) where the work of peeling the support of the transfer sheet is performed. Specific values vary depending on the climate and work environment, but are usually 10 to 40.
° C, more usually about 15 to 25 ° C. or,
Room temperature is also the lowest temperature at which the support is peeled off. Then, an activation (adhesive strength) temperature of the adhesive is selected to be higher than normal temperature, that is, ambient temperature. Activation temperature is usually 1
The temperature is set to about 00 to 150 ° C. As the ionizing radiation-curable adhesive having such properties, for example, the following ionizing radiation-curable resins (I) and (II) can be used.

(I) having a radically polymerizable unsaturated group,
The following two types of thermoplastic resins (1) or (2). (1) Those having a radical polymerizable unsaturated group in a polymer having a glass transition temperature of 0 to 250 ° C. More specifically, a polymer obtained by polymerizing or copolymerizing the following can be used by introducing a radical polymerizable unsaturated group by methods (a) to (d) described below. A monomer having a hydroxyl group; N-methylol (meth) acrylamide, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate,
2-hydroxybutyl (meth) acrylate, 2-hydroxy-3-phenoxypropyl (meth) acrylate, and the like. Monomers having a carboxyl group; (meth) acrylic acid, (meth) acryloyloxyethyl monosuccinate and the like. Monomers having an epoxy group; glycidyl (meth) acrylate and the like. Monomers having an aziridinyl group; 2-aziridinylethyl (meth) acrylate, allyl 2-aziridinylpropionate, and the like. Monomer having an amino group; (meth) acrylamide, diacetone (meth) acrylamide, dimethylaminoethyl (meth) acrylate, diethylaminoethyl (meth) acrylate and the like. A monomer having a sulfone group; 2- (meth) acrylamido-2-methylpropanesulfonic acid and the like. A monomer having an isocyanate group; an adduct of a diisocyanate and a radical polymerizable monomer having active hydrogen, such as an adduct of 1 to 1 mol of 2,4-toluene diisocyanate and 2-hydroxyethyl (meth) acrylate; A monomer copolymerizable with the above-mentioned monomers and other than the above-mentioned monomers; this monomer is used as a copolymer component for controlling the glass transition temperature and physical properties of the obtained copolymer.
For example, methyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, isobutyl (meth) acrylate, tert-butyl (meth) acrylate, isoamyl (meth) acrylate,
Cyclohexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, and the like.

Next, the polymer or copolymer obtained as described above is reacted by the following methods (a) to (d) to introduce a radically polymerizable unsaturated group. (a) In the case of a polymer or copolymer of a monomer having a hydroxyl group, a monomer having a carboxyl group such as the aforementioned (meth) acrylic acid is subjected to a condensation reaction. (b) In the case of a polymer or copolymer of a monomer having a carboxyl group or a sulfone group, the above-mentioned monomer having a hydroxyl group is subjected to a condensation reaction. (c) In the case of a polymer or copolymer of a monomer having an epoxy group, an isocyanate group, or an aziridinyl group, the above-mentioned monomer having a hydroxyl group or the above-described monomer having a carboxyl group is subjected to an addition reaction. (d) In the case of a polymer or copolymer of a monomer having a hydroxyl group or a carboxyl group, the monomer having the epoxy group or the monomer having the aziridinyl or the diisocyanate compound and the hydroxyl group-containing acrylate monomer A monomer having an isocyanate group such as 1 mole to 1 mole of an adduct is
Addition reaction is performed. In order to carry out the above reaction, it is desirable to add a trace amount of a polymerization inhibitor such as hydroquinone and to carry out the reaction while sending dry air.

(2) A compound having a melting point of 20 ° C. to 250 ° C. and having a radically polymerizable unsaturated group. Specific examples include stearyl (meth) acrylate, triacryl isocyanurate, cyclohexanediol di (meth) acrylate, spiroglycol diacrylate, spiroglycol (meth) acrylate, and the like.

The above (1) and (2) can be used as a mixture. Furthermore, the above (1) or (2), or (1) and
A radical polymerizable monomer can be added as a reactive diluent to the mixture of (2). This radical polymerizable monomer increases the crosslink density by irradiation with ionizing radiation and improves heat resistance. Examples of the monomer include, in addition to the above-mentioned monomers, ethylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, hexanediol di (meth) acrylate, trimethylolpropane di (meth) acrylate, and trimethylolpropane di (meth) acrylate. Methylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, pentaerythritol tri (meth) acrylate,
Dipentaerythritol tetra (meth) acrylate,
Dipentaerythritol tri (meth) acrylate, ethylene glycol diglycidyl ether di (meth) acrylate, polyethylene glycol diglycidyl ether di (meth) acrylate, propylene glycol diglycidyl ether di (meth) acrylate, polypropylene glycol diglycidyl ether di ( (Meth) acrylate, sorbitol tetraglycidyl ether tetra (meth) acrylate, and the like can be used. The compounding amount is 100% of the resin (1) or (2) alone or as a mixture.
It is preferable to use 0.1 to 100 parts by weight with respect to parts by weight. Further, a non-crosslinked resin described in (b) below can also be added.

(II) An ionizing radiation curable resin obtained by mixing a non-crosslinkable resin which is a thermoplastic solid at normal temperature with an ionizing radiation curable resin which is liquid at normal temperature. (A) Ionizing radiation curable resin which is liquid at ordinary temperature; a composition comprising a simple substance or a mixture of a prepolymer or monomer having a radical polymerizable unsaturated group in a molecule. Alternatively, it is a composition comprising a prepolymer or monomer having a cationically polymerizable functional group. Examples of the prepolymer having a radical polymerizable unsaturated group include polyester (meth) acrylate, urethane (meth) acrylate, epoxy (meth) acrylate, melamine (meth) acrylate, and triazine (meth) acrylate. Examples of the monomer having a radical polymerizable unsaturated group include monofunctional monomers such as methyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, and phenoxyethyl (meth) acrylate. As polyfunctional monomers, diethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, trimethylpropane tri (meth) acrylate, trimethylolpropane ethylene oxide tri (meth) acrylate, dipentaerythritol penta (meth) acrylate And dipentaerythritol hexa (meth) acrylate. Examples of the prepolymer having a cationically polymerizable functional group include bisphenol type epoxy resins, epoxy resins such as novolak type epoxy compounds,
There are prepolymers of vinyl ether resins such as fatty acid vinyl ethers and aromatic vinyl ethers.

(B) The non-crosslinkable resin is a room-temperature solid thermoplastic resin that does not contribute to the crosslinking and curing reaction by ionizing radiation. For example, an acrylic resin, a cellulose resin, a polyester resin, a vinyl acetate resin, Vinyl resins such as vinyl chloride-vinyl acetate copolymers and butyral resins. For example, an acrylic resin has, as its monomers, (meth) acrylic acid, methyl (meth) acrylate, ethyl (meth) acrylate, (meth) acrylic acid-
n-propyl, isopropyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, n-amyl (meth) acrylate, n-hexyl (meth) acrylate, (meth) ) (Meth) acrylic acid alkyl esters such as -n-octyl acrylate and lauryl (meth) acrylate; (meth) acrylic such as 2-chloroethyl (meth) acrylate and 3-chloropropyl (meth) acrylate Alkyl acid halides, (meth)
(Meth) having a hydroxyl group such as 2-hydroxyethyl acrylate and 2-hydroxypropyl (meth) acrylate
Halogenated (meth) acrylates such as acrylates, α-methyl (meth) acrylate, ethyl α-chloro (meth) acrylate, and 1-chloro-2-hydroxyethyl (meth) acrylate It is a homopolymer or copolymer composed of one or more (meth) acrylic monomers such as α-alkyl (meth) acrylate having a hydroxyl group and glycidyl (meth) acrylate. In addition, it is preferable to use those acrylic resins having an average molecular weight of 50,000 to 600,000 and a glass transition temperature of 50 to 130 ° C. When both the average molecular weight and the glass transition temperature are within these numerical ranges, the effect of eliminating the fluidity of the ionizing radiation curable resin liquid at room temperature at room temperature, the high durability of the adhesive, the high final adhesive strength, and the adhesion It is possible to have all the flexibility of the agent layer, which is preferable.

In the case of curing with ultraviolet light or visible light, a photopolymerization initiator is further added to the ionizing radiation-curable resin in a liquid or solid state at room temperature at the time of uncuring. In the case of a resin system having a radical polymerizable unsaturated group,
As the photopolymerization initiator, acetophenones, benzophenones, thioxanthones, benzoin, benzoin methyl ethers can be used alone or in combination.
In the case of a resin having a cationically polymerizable functional group,
As the photopolymerization initiator, an aromatic diazonium salt, an aromatic sulfonium salt, an aromatic iodonium salt, a metallocene compound, a benzoinsulfonic acid ester or the like can be used alone or as a mixture. The addition amount of these photopolymerization initiators is about 0.1 to 10 parts by weight based on 100 parts by weight of the ionizing radiation-curable resin. In addition, as the ionizing radiation, an electromagnetic wave or a charged particle having energy capable of crosslinking the molecules in the adhesive is used. Usually, ultraviolet rays or electron beams are used, but it is also possible to use visible rays, X-rays, ion beams or the like. As the ultraviolet light source, a light source such as an ultra-high pressure mercury lamp, a high pressure mercury lamp, a low pressure mercury lamp, a carbon arc lamp, a black light, and a metal halide lamp is used. As a wavelength of the ultraviolet light, a wavelength range of 190 to 380 nm is usually mainly used. As an electron beam source, various electron beam accelerators such as a Cockcroft-Walton type, a Van degraft type, a resonance transformer type, an insulating core transformer type, or a linear type, a dynamitron type, and a high frequency type are used, and 100 to 1000 keV, preferably A device that irradiates electrons having an energy of 100 to 300 keV is used.

When an ionizing radiation-curable adhesive is used, an ionizing radiation irradiating device for irradiating an ultraviolet ray or an electron beam to the curved surface transfer device can be incorporated. The irradiation is performed during, after, or after and after the application of the collision pressure.

Further, various additives may be further added to the various resins used for the adhesive, if necessary. These additives include, for example, extenders (fillers) composed of fine powders such as calcium carbonate, barium sulfate, silica, and alumina, and thixotropic agents such as organic bentonite (especially for transfer-receiving substrates having a large uneven step). In this case, the adhesive may be added to prevent the adhesive from flowing into the concave portion from the convex portion.).

To apply the adhesive to a sheet such as a transfer sheet or a substrate to be transferred, a solvent (or dispersion medium) such as water or an organic solvent is used.
In the form of a solution (or dispersion) dissolved (or dispersed) in
Alternatively, a hot-melt thermoplastic composition or a room-temperature liquid uncured resin is applied in the form of a solvent-free resin liquid. As a coating method,
What is necessary is just to apply by the solution coating by a gravure roll coat etc. which are a conventionally well-known coating method, or the fusion coating (melt coating) method by an applicator etc. When used without adding a diluting solvent, solvent drying is unnecessary. For example, heat-sensitive adhesives can be used as solventless hot-melt adhesives, respectively. In addition, an ionizing radiation-curable adhesive or the like can be applied without a solvent. When used as a hot-melt adhesive, there is no solvent, so solvent drying is unnecessary even immediately before transfer, and high-speed production is possible. The amount of the adhesive applied varies depending on the composition of the adhesive, the type of the substrate to be transferred, and the surface condition.
Usually, it is about 10 to ²⁰⁰ g / m ² (solid content).

In the case where the adhesive is used as a hot-melt adhesive, and when the transfer sheet is further modified to follow the irregular shape of the substrate to be transferred and transferred, the support of the transfer sheet is necessarily made of polypropylene. It is necessary to select a material exhibiting thermoplasticity or rubber elasticity at room temperature or in a heated state, such as a thermoplastic resin sheet such as a system resin. However, from another viewpoint, a material having low heat resistance should be selected for the support. Means that you don't get it. Therefore, when the adhesive is melt-coated to form a transfer sheet, when the adhesive layer is thickly applied, the support is softened by heat during the melt coating, and the adhesive is heated in an adhesive coating apparatus. The sheet may stick to the applicator roller and may be stretched, distorted, or entangled by dragging. Therefore, in such a case, the transfer sheet may be formed by applying an adhesive via a release sheet (separator) instead of directly applying the adhesive to the sheet by melt coating. That is, the adhesive is heated and melt-coated on a release sheet having heat resistance and release properties, and then the release sheet and the sheet to be the transfer sheet are temporarily laminated by a nip roller or the like with the applied adhesive. Then, by peeling only the release sheet from the sheet by a peeling roller or the like,
The transfer sheet having the adhesive layer formed thereon can be obtained by reducing heat damage to the sheet. The release sheet does not need to be stretchable. A heat-resistant resin sheet such as biaxially stretched polyethylene terephthalate sheet, polyethylene naphthalate, polyarylate, or polyimide, or paper is used as a base material. For example, a conventionally known release sheet subjected to a release treatment by such coating can be used. The thickness of the release sheet is usually about 50 to 200 μm.

Note that the heat-sensitive adhesive such as a heat-melting adhesive is used as the adhesive, and the timing of heating to activate and heat-bond the adhesive is before applying the collision pressure, during the application of the collision pressure,
Alternatively, it may be before or during the application of the collision pressure.
The heating of the adhesive is performed by heating the transfer sheet or the substrate to be transferred. Materials to which adhesive has been applied (transfer sheet and substrate to be transferred)
May be heated, the material on the side where the adhesive is not applied may be heated, or both materials may be heated. Further, for the heating during the application of the collision pressure, heated solid particles or a fluid for accelerating the solid particles may be used as the heating fluid. On the other hand, if the transfer sheet follows the surface shape of the substrate to be transferred and is formed, and the adhesive is sufficiently activated, cooling of the adhesive may be promoted by cooling means such as cold air. Cold air is blown from the transfer sheet side or the transfer-receiving substrate side. In the present invention,
As this cold air, part or all of the cooling gas blown to the transfer sheet support side for removing solid particles is also used. In addition, cooling solid particles and cooling fluid can also be used as cooling means. The promotion of cooling also prevents the transfer sheet formed following the inside of the concave portion of the concave-convex surface of the transfer-receiving substrate from returning to the case where there is a restoring force after releasing the collision pressure. (Hereafter, following the next document file)

[Solid Particles] Solid particles P include glass beads, ceramic beads, calcium carbonate beads, alumina beads, zirconia beads, alundum beads,
Non-metallic inorganic particles that are inorganic powders such as corundum beads,
Iron, carbon steel, iron alloys such as stainless steel, aluminum,
Or metal particles such as metal alloys such as aluminum alloys such as duralumin, titanium and zinc, or fluorine resin beads, nylon beads, silicone resin beads, urethane resin beads, urea resin beads, phenol resin beads,
Organic particles such as resin beads such as crosslinked rubber beads can be used. When liquid water is used as the solid particle accelerating fluid, the solid particles are preferably non-metals such as stainless beads, glass beads, ceramic beads, and resin beads that do not rust or corrode with water. The shape is preferably spherical, but spheroidal, polyhedral, scaly, amorphous, and other shapes can also be used. The particle size of the solid particles is usually about 10 to 1000 μm.

Incidentally, the solid particles can also serve as a heating means and a cooling means. When heated solid particles are used, the activation of the adhesive by heating and the promotion of crosslinking and curing thereof, or the improvement of the stretchability by heating the transfer sheet can be performed together with the pressing of the transfer sheet. In this case, the transfer sheet and the substrate to be transferred may be heated to some extent by another heating method before the application of the collision pressure. For the purpose of promoting cooling after bonding, solid particles having a temperature lower than the temperature of the adhesive at the time of bonding can be used as the cooling solid particles. The solid particles may be used in combination with a part or all of the solid particles as heated solid particles or cooled solid particles, or after the heated solid particles collide with the cooled solid particles.
In addition, the transfer sheet, the base material to be transferred, the adhesive, etc., which need to be heated by another heating method, are sufficiently heated, and the cooling solid particles are used for the formation, adhesion and cooling of the transfer sheet. It can be done at the same time. In order to cool or cool the solid particles, when the storage of the solid particles is stored in a tank such as a hopper or the like, a heating means, a cooling means, or the like provided by an electric heater, heated steam, or a refrigerant provided in the tank or on the outer wall of the tank. You can do it in Further, these means may be provided on the outer wall of the solid particle transport pipe, and heating or cooling may be performed in the transport pipe. Alternatively, when a fluid is used for accelerating the solid particles, a cooled or heated fluid may be used to cool or heat the solid particles by heat conduction from the fluid. In this case, by causing the fluid to collide with the transfer sheet, the fluid can be used as a heating or cooling unit together with the solid. Alternatively, when the fluid is a liquid and a tank for storing solid particles together with the liquid is used, the solid particles and the liquid may be cooled and heated during storage.

[Application of Impact Pressure by Solid Particles] In order to impinge the solid particles against the transfer sheet and apply the impact pressure to press the transfer sheet against the substrate to be transferred, the solid particles are ejected from the solid particle ejection means for ejecting the solid particles. The particles are ejected toward the transfer sheet, and an impact pressure is applied to the transfer sheet. As the solid particle ejecting means, for example, an ejector using a rotating impeller or an ejector using an ejection nozzle is used as a particle accelerator. The ejector using the impeller accelerates and ejects solid particles by rotation of the impeller. The ejector using the ejection nozzle accelerates and transports solid particles with a high-speed fluid flow using a solid particle acceleration fluid, and ejects the solid particles together with the fluid. Sandblasting, shot blasting, shot peening and the like used in the blasting field can be used for the impeller and the blowing nozzle. For example, a centrifugal blast device is used for the impeller, and a pressurized or suction blast device, a wet blast device, or the like is used for the blowing nozzle. The centrifugal blast device accelerates and ejects solid particles by the rotational force of the impeller. A pressurized blasting device ejects solid particles together with air while being mixed with compressed air. The suction-type blast device sucks solid particles into a negative pressure portion generated by a high-speed flow of compressed air, and ejects the solid particles together with the air. The wet blast device mixes and ejects solid particles with a liquid. In addition to the blowing nozzle and the impeller, a method of accelerating solid particles using free fall due to gravity, a method of accelerating magnetic particles by a magnetic field, and the like can be adopted as the solid particle ejecting means. is there. In the case of an impeller, a gravitational force, and a magnetic field ejecting means using a magnetic field, the solid particles can be ejected toward the transfer sheet in a vacuum.

FIG. 3 to FIG. 6 are conceptual diagrams of an example of an impeller that can be used as a particle accelerator of an ejector. These correspond to centrifugal blasting devices used in the blasting field. In the drawing, the impeller 812 has a plurality of blades 813 fixed on both sides by two side plates 814, and a rotation center portion is a hollow portion 815 without the blades 813. Further, the direction controller 8 is provided in the hollow portion 815.
16 are inherent. The direction controller 816 has an opening 817 that is partially open in the circumferential direction, has a hollow cylindrical shape, and has the same rotation axis as the rotation axis of the impeller 812, and rotates independently of the impeller. It is free. When the impeller is actually used, the opening is fixed in an appropriate direction. Further, inside the directional controller, another impeller having a hollow inside and the same rotation axis as the rotation axis of the impeller 812 is provided as a sprayer 818 (see FIG. 5). The spreader 818 rotates with the outer impeller 812. A rotation shaft 819 is fixed to the center of rotation of the side plate 814.
The impeller 812 is rotatably supported by a bearing 820 and driven and rotated by a rotation power source (not shown) such as an electric motor. The rotating shaft 819 has a blade 813 between them.
It does not penetrate between the side plates 814 and forms a space without a shaft. Then, the solid particles P are supplied into the sprayer 818 from a hopper or the like through a transport pipe. Normal,
The solid particles are supplied from above (directly or obliquely above) the impeller. The solid particles supplied into the sprayer are scattered outward by the impeller of the sprayer. The scattered solid particles are emitted only in the direction allowed by the opening 817 of the direction controller 816 and supplied between the blades 813 of the outer impeller 812. Then, it collides with the impeller 813, is accelerated by the rotational force of the impeller 812, and ejects from the impeller.

The ejection direction of the solid particles is shown in FIGS.
, But may be horizontal or obliquely downward (not shown). FIG. 6 (A) and FIG. 6 (B)
6A and 6B are conceptual diagrams of the ejection direction control for adjusting the ejection direction of the solid particles by setting the direction of the opening 817 of the direction controller 816 (in FIGS. 6A and 6B, the direction controllers are at the illustrated positions, respectively). Fixed). Note that the direction controller 816
By adjusting the size of the opening in the circumferential direction and the width direction, the ejection amount of solid particles can also be adjusted. In FIG. 4, the rotating shaft 819 is configured to be only outside the side plate 814 and not penetrate to the hollow portion 815. A configuration may be adopted in which the inside of a hollow cylindrical rotary shaft having an opening through which solid particles pass through is formed as a hollow part (not shown). The shape of the wing 813 is
A rectangular flat plate (a rectangular parallelepiped) as shown in FIGS. 3 to 6 is typical, but a curved curved plate, a propeller shape such as a screw propeller or the like can also be used. I do. The number of blades is usually selected from a range of 2 to 10 blades. By the combination of the shape, number, rotation speed, mass and supply speed and supply direction of the solid particles, and the opening size and direction of the direction controller, the ejection direction of the accelerated solid particles, the ejection speed, Adjust the projection density, ejection angle, etc.

FIG. 7 is a conceptual diagram showing another example of the impeller. The impeller 812a shown in the drawing has a structure in which a plurality of flat blades 813a are fixed on both sides by two side plates 814a. Usually, the solid particles P are supplied from above (directly above or obliquely above) the impeller. Also, the side plate 814
a also regulates the jetting direction in the width direction with respect to the rotating shaft 819a. By adjusting the shape, the number, the rotation speed, the mass of the solid particles, the supply speed and the supply direction of the impellers, the direction of the ejection (spout) of the accelerated solid particles, the ejection speed, the projection density, the ejection diffusion angle, etc. are adjusted. . The ejection direction of the solid particles can be vertically downward (not shown), horizontal (FIG. 7), obliquely downward (not shown), or the like. In addition, the above-described impeller 81
2, 812a, etc., if necessary,
By providing an ejection guide (not shown) that opens only the ejection and extraction portion of solid particles and covers the periphery of the other impeller,
The ejection direction of the solid particles can be aligned, and the ejection direction of the solid particles can be controlled. The shape of the opening of the ejection guide is, for example, a hollow cylindrical shape, a polygonal column shape, a conical shape, a polygonal pyramid shape, a fish tail shape, or the like. The ejection guide may have a single opening, or may have an interior partitioned into a honeycomb shape.

The dimensions of the impellers such as the impellers 812 and 812a are usually about 5 to 60 cm in diameter, and the width of the impeller is 5 to 20 c.
m, the length of the impeller is about the diameter of the impeller, and the rotation speed of the impeller is about 500-5000 [rpm]. The ejection speed of the solid particles is about 10 to 50 [m / s], and the projection density is about 10 to 150 [kg / m ² ].

The material of the impeller blades may be appropriately selected from ceramics, metals such as steel, high chromium cast steel, titanium, and titanium alloy. Since the solid particles are accelerated upon contact with the blade, it is preferable to use a high chromium cast steel or ceramic having good wear resistance for the blade.

[Blowing Nozzle] FIG. 8 is a conceptual diagram showing an example of a blowing device 840 using a blowing nozzle as a solid particle blowing means for blowing solid particles together with a fluid. Note that the ejector 840 shown in the figure uses gas as a solid particle accelerating fluid,
It is an example of an ejector in a form in which the gas and the solid particles are mixed and ejected when the solid particles are ejected. The ejector 840 shown in the figure includes an induction chamber 841 for mixing the solid particles P and the fluid F, and an induction chamber 8
The nozzle 41 includes an internal nozzle 842 for ejecting the fluid F into the nozzle 41, and an ejection nozzle 844 for ejecting the solid particles P and the fluid F from the nozzle opening 843. Compressor or blower (not shown)
Fluid F sent from a pressure tank (not shown)
Is ejected from the nozzle 844 of the nozzle 844 by jetting from the internal nozzle 842 through the induction chamber 841, a negative pressure is created by the action of the fluid flow flowing at high speed in the induction chamber 841 in the ejector. The negative pressure guides and mixes the solid particles into the fluid flow, accelerates and transports the solid particles with the fluid flow,
44 is ejected together with the fluid flow from the nozzle opening 843. It should be noted that the blowing nozzle includes a blowing nozzle using a liquid as a solid particle accelerating fluid. For liquids,
For example, a pump (not shown, when the fluid is a liquid) mixes and stores the fluid and the solid particles in a pressurized tank (not shown), and ejects the mixed solution from the nozzle opening of the blowing nozzle. used.

As the shape of the nozzle opening, a hollow cylindrical shape, polygonal column shape, conical shape, polygonal pyramid shape, fish tail shape or the like is used. The blowing nozzle may have a single opening, or may have an inside partitioned into a honeycomb shape. Fluid pressure is spraying pressure, usually 0.1-100k
g / cm ² . The flow velocity of the fluid flow is usually about 1 to 20 m / sec for the liquid flow, and is usually about 5 to 80 m / sec for the air flow. The material of the ejector such as the induction chamber and the nozzle portion may be appropriately selected from ceramics, steel, titanium, titanium alloy and the like according to the type of fluid. Since the solid particles pass through the inner wall of the ejector, when metal beads or inorganic particles are used as the solid particles, the particles are hard, and therefore, a ceramic having good wear resistance is preferably used. If the fluid is a liquid,
Select a material that does not cause rust, dissolution, corrosion, etc. For example, if the fluid is water, stainless steel, titanium, a titanium alloy, a synthetic resin, or ceramic is used. However, steel or the like may be used if the surface is waterproofed.

[Fluid] The fluid F is used as a solid particle accelerating fluid when the solid particles are accelerated and conveyed by the fluid flow and the solid particles are ejected together with the fluid from the solid particle ejecting means (eg, an ejection nozzle). . The fluid F is a solid particle acceleration fluid for accelerating the solid particles. As the fluid, both gas and liquid can be used, but usually, gas which is easy to handle is used. Air is a typical gas, but carbon dioxide,
Nitrogen or the like may be used. Although the liquid is not necessarily limited, water is one of the preferred materials because of its nonflammability, ease of drying, non-toxicity, low cost, availability, and the like. In addition,
Nonflammable liquids such as chlorofluorocarbon, glycerin, and silicone oil can also be used. A liquid (as well as a gas) can be impinged on the transfer sheet along with the solid particles. Naturally, liquid has a higher density than gas, so liquid is easier to accelerate when solid particles are accelerated by a fluid flow than gas, and when liquid collides with a transfer sheet, Even at the same collision speed, the collision pressure is higher than that of gas and a practical collision pressure can be obtained. (Since the difference in density from the solid particles is small, the solid particles can be easily transported.) Therefore, in the case of a liquid, in addition to the collision pressure of the solid particles, the collision pressure of the liquid can be used as the transfer pressure. A transfer pressure can be applied, and as a result, a large effect can be obtained by molding the transfer sheet by following the surface irregularities of the substrate to be transferred. Further, when a fluid is used as the heating or cooling means when the collision pressure is applied, the liquid has a higher specific heat than the gas, so that a greater heating or cooling effect can be obtained. In addition, when the liquid is an electric conductor such as water, explosion-proof measures against electrostatic charging are easier than in the case of a gas.

[Collision Pressure Application Form] Although it is possible to use only one ejector depending on the area of the collision pressure application area, if the required area is large, a plurality of ejectors are used to eject solid particles colliding with the transfer sheet. Preferably, the collision area has a desired shape. For example, a plurality of rows are arranged in a straight line in the width direction perpendicular to the feeding direction of the transfer sheet and the transfer-receiving base material to form a wide and band-shaped collision region in the width direction. 9 (A) is a staggered arrangement, and FIG. 9 (B) is a single-row arrangement, but the center in the width direction is arranged so as to collide on the upstream side in the feed direction. It is. FIG.
In the arrangement (B), the pressing of the transfer sheet against the transfer-receiving substrate by the collision pressure starts from the center in the width direction and is sequentially pressed toward both ends in the width direction. With this configuration, it is possible to prevent the transfer sheet from closely adhering to the transfer-receiving substrate while holding the air in the center in the width direction. When a plurality of ejectors are arranged in the width direction as shown in FIG. 9, it is preferable that the pressurizing regions of the individual ejectors are partially overlapped with each other so that the ejectors are arranged so as to be able to pressurize the entire width. FIG. 9B shows an example of such an arrangement. In the figure, the dotted line indicates the pressure area. In addition, in order to lengthen the collision pressure application time,
It is preferable that the ejectors are arranged in two or more rows in the feed direction of the transfer sheet and the substrate to be transferred.

Further, it is not always necessary to make the collision pressures all uniform within the collision area. FIG. 10 shows a setting example of a mountain-shaped pressure distribution in which the central portion in the width direction orthogonal to the transfer direction of the transfer sheet has the maximum collision pressure, and the collision pressure decreases toward both ends in the width direction. This setting assists the pressure welding to proceed in a stepwise manner from a place where the pressure is high (the center part in the figure) to a place where the pressure is low (the both sides in the figure). However, in the case of a pressure distribution as shown in FIG. 10, the impact pressure on the substrate to be transferred is such that the transfer to the desired uneven surface can be completely performed, the transfer sheet is distorted due to excessive pressure, and the transfer Adjust so that it is all within the appropriate pressure range that does not cause deformation or breakage of the material. In the curved surface transfer method using a rubber transfer roller,
If the diameter of the central part of the transfer roller is made large, the central part can be strengthened in terms of pressure, but the circumferential length differs between the central part and both ends. Can not do. The collision pressure is adjusted by controlling the speed of the solid particles colliding from the ejector with the transfer sheet, the number of colliding solid particles per unit time, the projection amount, and the mass of one particle. Among them, to adjust the speed of the solid particles, for example, in the case of an ejector using an impeller, the speed is adjusted by the rotation speed of the impeller, the diameter of the impeller, and the like. In the case of an ejector using a blowing nozzle, the opening / closing amount of a valve, the size of an inner diameter of a pipe for conveying solid particles connected to the valve, the fluid pressure (fluid) immediately before the ejector using a pressure regulator (regulator) or the like. By itself or a mixture of fluid and solid particles)
It is adjusted by controlling the velocity of the ejected solid particles and the fluid flow.

[Method of arranging ejector with respect to substrate to be transferred]
In the case of an ejector using an impeller, the ejection direction of solid particles does not spread in principle in a direction parallel to the rotation axis of the impeller, but tends to spread in a direction perpendicular to the rotation axis. On the other hand, in the case of the blowing nozzle, the spread of the ejected solid particles is smaller than that in the case of the ejector using the impeller, and even if it spreads, it is usually uniform and isotropic in any direction. The arrangement of the ejectors may be determined in consideration of such characteristics of the ejectors. However, when one ejector cannot achieve the desired collision area size, a plurality of ejectors may be used. As described above, when a plurality of ejectors are arranged on the transfer surface of the substrate to be transferred, each ejector is parallel to the substrate to be transferred, and the ejection direction of each ejector is The basic arrangement is such that it is in the normal direction. This is because such a parallel arrangement allows the solid particles to collide perpendicularly to the envelope surface of the surface to be transferred of the substrate to be transferred, and basically allows the collision pressure to be used most effectively. Therefore, for example, as shown in FIG. 11, if the envelope surface (the cross-sectional shape perpendicular to the transport direction) of the transfer-receiving surface of the transfer-receiving substrate B is a cylindrical convex curved surface having a circular shape, a plurality of ejectors can be used. 32, and the direction of the ejector is set so that the direction of the ejector is close to the individual collision surface (tangent plane of the convex curved surface) which each ejector mainly serves so that the solid particles collide almost perpendicularly. It is good to arrange in the normal direction of the envelope surface. In this manner, the ejector may be arranged so that the ejecting direction of the ejector is such that the solid particles collide as perpendicularly as possible according to the uneven shape of the target substrate to be transferred. However, the direction of the ejector need not necessarily be perpendicular to the side surface of the transfer sheet support. Further, a large number of ejectors may be provided, and some ejectors may be stopped depending on the substrate to be transferred.

[One Form of Continuous Transfer Using Chamber] When solid particles are actually used, as described above, it is preferable that the solid particles are not scattered in the surrounding atmosphere and are circulated and reused. . Then, next, as an embodiment of the curved surface transfer method of the present invention, a conceptual diagram of one embodiment of the curved surface transfer device of the present invention which performs continuous transfer while preventing scattering and circulating reuse of solid particles by using a chamber. The present invention will be described in further detail with reference to FIG.

The apparatus shown in the figure is an apparatus which uses a long transfer sheet S to successively and successively transfer a decorative layer and the like onto a flat substrate B having an uneven surface. The apparatus includes a substrate transporting device 10 that transports a substrate to be transferred B as a substrate transporting device, a sheet feeding device 20 that feeds a transfer sheet S as a sheet feeding device, and solid particles P in a chamber 33. A collision pressure application unit 30 is a collision pressure application unit that ejects a jet from an ejection unit 32 that is a particle ejection unit, collides with a support side of a transfer sheet to sequentially apply a collision pressure, and presses the transfer sheet against a transfer target substrate. Is provided. The ejector 32 uses, for example, the above-described impeller. Chamber 33
Except for the entrance of the transfer sheet and the base material to be transferred, except for the transfer sheet and the base material to be exposed to the collision pressure, at least the opening of the ejector is covered from the outside, and the solid particles are not leaked into the outside working atmosphere. Like that. For this reason, the pressure inside the chamber is preferably made lower (negative pressure) than outside.

The second chamber 71 serves as a cool air area on the downstream side of the chamber 33 and on the upstream side of the peeling roller 60.
Equipped. On the transfer sheet support side in the second chamber 71, a cool air blowing device 70 including a slit-shaped blowing nozzle for blowing room temperature air toward the transfer sheet is provided as a cool air blowing means. The second chamber 71 is isolated from the chamber 33 on the transfer sheet support side, but has an integrated structure connected to the transfer substrate side of the chamber 33 on the transfer substrate side. Note that the cold air blowing device 70 also serves as a removing device that blows and removes solid particles remaining on the transfer sheet. The cold air area is changed to the second chamber 71.
This is because if solid particles still remain on the transfer sheet support, they are blown off by cold air and scattered into the surrounding working environment. Of course, if it is not necessary to prevent the solid particles from scattering, the second chamber 71 can be omitted.

The substrate transporting device 10 as the substrate transporting means includes:
It is composed of a row of driving rotary rollers for conveyance, an endless conveyor belt, and the like. In addition, the substrate transporting unit transports the substrate to be transferred to at least the position facing the ejector, and further transports the substrate to the position facing the remover. After a certain cold wind area,
The substrate to be transferred is transported to the peeling roller 60. The sheet feeding device 20 serving as a sheet feeding unit includes the sheet feeding device 2.
1, a sheet supporting device 22, a sheet discharging device 23, and other guide rollers. The sheet supply means supplies the transfer sheet to at least a position facing the ejector, but in the apparatus shown in the figure, the transfer sheet is further conveyed to the sheet discharge device 23 via the cold air area having the cool air blowing device 70 and the peeling roller 60. I do. A collision pressure application unit 30 serving as a collision pressure application unit includes a hopper 31 for storing and supplying solid particles to an ejector 32, an ejector 32, a chamber 33, and a drain pipe 34 serving as a return path to the hopper for the solid particles having the collision pressure. A separation device 35 for separating solid particles from gas, a vacuum pump 36 for sucking and exhausting a carrier gas for the collected solid particles, and the like. The cool air blowing device 70, which is a cool air blowing means, is a rectangular slit-shaped nozzle having a long opening, and blows out, as a cooling gas, air from a blower that sucks ambient air at room temperature. Then, the heated transfer sheet or adhesive is cooled. At the same time, if any solid particles remain on the transfer sheet with the blown air, they are blown off and removed. Therefore, the cool air blowing device is also a device for removing solid particles. The arrangement of the cool air blowing device 70 is as illustrated in FIG. The curved surface transfer apparatus of the present invention is an apparatus including at least the solid particle ejection unit, the cool air blowing unit, the sheet supply unit, and the base material conveyance unit, and further includes a sheet heating device 40 for heating the transfer sheet. In the chamber 33, on the upstream side of the ejector, a substrate heating device 4 for heating the substrate to be transferred
1 on the upstream side of the chamber 33, a base material coating device 50 for appropriately applying an adhesive or a base coat to the base material to be transferred on the upstream side of the base material heating device, and a peeling roller 60 with the second chamber 71. On the outer downstream side, the apparatus further includes a suction and exhaust device 90 for promoting preliminary contact between the transfer sheet and the substrate to be transferred.

First, in the apparatus shown in the figure, a plate-shaped transfer base material B is transferred one by one by a base material transfer device 10, and an adhesive is applied by the base material coating device 50 onto the entire surface or only the convex portions. Apply to desired parts. If the adhesive has a solvent,
The substrate to be transferred and the adhesive are heated by the next substrate heating device 41, and the evaporated components are evaporated and dried. Note that a plurality of the substrate coating devices 50 and the substrate heating devices 41 may be connected to each other, and the undercoating or the sealer coating before the undercoating may be performed simultaneously with the transfer before the adhesive is applied. Then, after the transfer substrate B is heated by the heating device 41, the collision pressure application unit 3
0 is conveyed and supplied into the chamber 33.

The transfer sheet S is tensioned by a sheet feeding device 20 including a sheet feeding device 21, a sheet supporting device 22, a sheet discharging device 23, etc., and is unwound from a feeding roll set in the sheet feeding device 21. After entering the chamber 33 of the collision pressure applying unit 30 via the guide roller. When applying the adhesive to the transfer sheet during transfer,
The transfer sheet is fed from the sheet feeding device 21 to the collision pressure applying unit 30.
When the adhesive is applied by an adhesive coating device (not shown) while the solvent is being supplied, and the solvent is required to be further dried, the drying device (not shown) is dried and then supplied to the collision pressure applying section. I do.

Further, as shown in FIG. 12 (B), when the transfer sheet S enters the chamber 33, both ends in the width direction are sandwiched by the sheet supporting device 22 (not shown in FIG. 12 (A)). Transferred substrate B transported on the layer side surface
A slight space is opened above the substrate B to be transferred so as to face the side (in the case where nothing is performed without applying an impact pressure or the like), and the speed is parallel to the substrate B to be conveyed. Until it comes into contact with the transfer-receiving substrate B under the impact pressure, while maintaining the gap therebetween. The sheet supporting device 22 includes a belt or the like that rotates in accordance with the transfer of the transfer sheet while sandwiching both ends of the transfer sheet having a width wider than the width of the base material. Here, since the envelope surface of the substrate to be transferred is substantially flat, complete contact of the transfer sheet with the substrate by the impact pressure at the center in the width direction is temporally earlier at the above-described gap by the sheet supporting device. In the vicinity of both ends in the width direction, the operation is performed with a delay. this is,
This is one of the measures for preventing air from leaving and adhering between the base material to be transferred and the transfer sheet (particularly near the center thereof).
When transferring the transfer sheet at a constant speed in the vicinity of the transfer substrate, whether the transfer sheet is slightly separated or transferred as a contact state with respect to the transfer substrate, the shape of the surface unevenness of the transfer substrate, The preheating temperature of the substrate to be transferred, the thermal deformability of the transfer sheet, the collision pressure of solid particles, the activation temperature of the adhesive, and the like are appropriately taken into consideration. The sheet heating device 40 is heated by heater heating, infrared heating, dielectric heating, induction heating, hot air heating, or the like before being nipped and conveyed by the sheet supporting device and receiving the application of collision pressure.
Then, the transfer sheet is heated and softened, and is easily stretched when a collision pressure is applied. Since the sheet heating device is provided in the chamber in the figure, it is better to reduce the air volume in the case of hot air heating. This is because air enters the chamber, hinders the maintenance of a negative pressure in the chamber and agitates the solid particles as described later. In addition,
The transfer sheet is also indirectly heated by the transfer target substrate heated by the substrate heating device and supplied to the collision pressure applying unit. Heating by the sheet heating device can be omitted when preheating of the transfer sheet is unnecessary.

On the other hand, the solid particles P are supplied from the hopper 31 to the ejector 32 in the chamber 33, where they are accelerated by the impeller as shown in FIGS. I do. Then, the transfer sheet is exposed to collision of solid particles ejected from the ejector.
The change in the momentum of the solid particles per unit time at the time of collision is the collision pressure for pressing the transfer sheet against the transfer-receiving substrate. Here, since the envelope surface of the substrate to be transferred is substantially flat,
The main component of the solid particles collides substantially perpendicularly to the support side of the transfer sheet is the main component, and the entire width in which the base material to be transferred and the transfer sheet are conveyed is the collision area. Then, as the transfer base material and the transfer sheet are conveyed, the entire region in the longitudinal direction is sequentially exposed to the collision pressure. The sheet supporting device also prevents solid particles from flowing around from both ends in the width direction of the transfer sheet and flowing between the transfer sheet and the base material. Then, the transfer sheet is pressed against the substrate to be transferred by the solid particle collision pressure, and the transfer sheet is also extended and deformed into the concave portions of the concave and convex surface of the substrate to be transferred. The transfer layer is formed following the shape, and the activated adhesive adheres the transfer layer to the substrate to be transferred. The substrate to which the transfer sheet is in close contact exits the chamber 33 and enters the second chamber 71, which is separated from the chamber 33 only in the upper part of the substrate transport device 10, as the next cool air area. In the second chamber 71, a slit nozzle-shaped cold air blowing device 7 is provided.
Air at room temperature is blown from 0 to the transfer sheet and the substrate to be transferred, and the transfer substrate and the transfer sheet are forcibly cooled to a temperature at which the support of the transfer sheet can be peeled off. Then, after that, the transfer-receiving substrate on which the transfer sheet is in close contact exits the second chamber 71 and moves toward the peeling roller 60.

On the other hand, the solid particles that have been subjected to the collision with the transfer sheet partially fall to the lower part of the chamber 33 bypassing the side surface of the sheet supporting device 22. The remaining part is placed on the transfer sheet support while the chamber 3
3 and enters the second chamber 71, which is a cool air area. Then, there, the solid particles remaining on the transfer sheet are blown down from the end of the transfer sheet to the lower part of the second chamber 71 connected and integrated with the lower part of the chamber 33 by the air blown out from the cool air blowing device 70. The solid particles collected in the lower part of the chamber 33 are sucked from there by a drain pipe 34 and collected in the original hopper 31. Also,
The air in the chamber for collecting and transporting the solid particles is also sucked by the drain tube 34 together with the solid particles, and is transported to the airflow / solid particle separation device 35 above the hopper. The separation device 3
In FIG. 5, as shown in the drawing, solid particles conveyed by air flow are discharged into the apparatus cavity in the horizontal direction, and solid particles having a high density relative to the gas fall downward by their own weight, and the gas flows horizontally as it is. The remaining solid particles that are to move with the airflow are filtered by a filter, and then discharged out of the system by a vacuum pump 36. In this way, the solid particles are transferred from the chamber entrance through which the transfer sheet and the substrate to be transferred enter and exit,
Avoid spilling with air. Further, in order to prevent the solid particles from flowing out of the chambers 33 and 71 and to prevent the solid particles from flowing back from the chamber 33 to the hopper, the pressure inside the chambers 33 and 71 is preferably lower than that of the outside. The pressure of the chamber is adjusted by adjusting the exhaust amount of the vacuum pump 36, the amount of gas flowing out of the chamber due to the exhaust amount and the like by connecting an exhaust fan (not shown) as appropriate, and the solid particles from the ejector. The amount of gas entering the chamber (especially in the case of an ejector such as a blowing nozzle using gas as a solid particle accelerating fluid), the amount of gas entering the chamber from a cool air blowing device for blowing gas, and a blower (not shown) This is performed by adjusting the balance with the amount of gas (especially in the case of an impeller using an impeller) and the like to be connected to the chamber as appropriate and put into the chamber.

After the transferred base material and the transfer sheet are brought out of the second chamber 71, the transfer sheet (support) is peeled off from the transferred base material by the peeling roller 60. As a result, a decorative material D in which a decorative layer or the like is transferred and formed as a transfer layer of the transfer sheet on the uneven surface of the base material to be transferred is obtained. On the other hand, (the support of) the transfer sheet after passing through the peeling roller is wound around the sheet discharge device 23 as a discharge roll.

In the case where an ejection nozzle using a liquid as a solid particle accelerating fluid is used as an ejector, a dryer is provided upstream or downstream, separately from the cooling by the cold air blowing device, or used also as the cold air blowing device itself. The liquid is dried or blown off, for example, by blowing air at room temperature or warm air (at an appropriate temperature that does not hinder the cooling of the transfer sheet or the adhesive). When using an ionizing radiation-curable resin for the adhesive or the like, the resin is cured by providing an ionizing radiation irradiation device such as a mercury lamp (ultraviolet light source) between the ejector and the peeling roller.

[Method of heating adhesive and the like when using chamber]
As described above, as an embodiment of the present invention, an example of colliding solid particles in a chamber and removing solid particles has been described.
A heating method for activating the adhesive or improving transfer sheet stretchability when the chamber is used will be further described.

The transfer sheet may be heated by any means. For example, the heating before the application of the collision pressure may be, for example, heater heating, infrared heating, or the like.
Dielectric heating, induction heating, hot air heating, or the like is used. The apparatus shown in FIG. 12 is an example in which a sheet heating device 40 is provided in the chamber 33 so that heating before the application of the collision pressure is performed immediately before the ejector so as not to be cooled after the heating. However, when the heating is performed in the chamber 33 and hot air heating is used as the heating means (the same applies to the heating of the substrate to be transferred, which will be described later), it is better to reduce the blowing air volume. This will cause air to enter the chamber 33, increase the load on the vacuum pump for collecting solid particles, including when using air for accelerating solid particles, and disrupt the flow of solid particles. Because. In addition to performing the sheet heating in the chamber 33 as illustrated in FIG. 12, if the elongation of the transfer sheet due to the heating does not hinder the transfer of the transfer sheet, the sheet is heated outside the chamber 33 or in the chamber 33. It may be performed both inside and outside. Heating may be performed from any of the back side, front side, and front and back sides of the transfer sheet. Note that the sheet heating is preferably performed after both ends in the width direction are supported by the sheet supporting device. Before that, the sheet is likely to extend in the feeding direction or hang down, thereby hindering the transfer. Next, in the heating means during the application of the collision pressure, when a heated solid particle or a fluid for accelerating solid particles is used, the heated fluid can also be used. Further, heating may be performed by providing a heat source dispersed in the gap between the ejectors. Of course, the heating during and before the application of the collision pressure can be used together, or the heating during the application of the collision pressure alone may be performed.

If the substrate to be transferred is coated with an adhesive or a sealer and the solvent is heated and dried by the substrate heating device 41 or the like, the substrate to be transferred is heated and then heated. The transfer sheet can also be heated to some extent indirectly from the transferred substrate. Therefore, even when heating of the transfer sheet is necessary, if the indirect heating from the transfer-receiving substrate or the heating by the solid particles or the solid particle accelerating fluid is sufficient, the sheet heating device dedicated to the transfer sheet is omitted. Can also.

The substrate to be transferred may be heated before the collision pressure is applied, during the application of the collision pressure, or before and during the application of the collision pressure. By heating the transfer-receiving substrate, it is possible to prevent a decrease in the temperature of the heated transfer sheet when the transfer sheet is heated to improve the stretchability. Further, the transfer sheet can be heated from the side of the substrate to be transferred. The substrate to be transferred may be heated outside or inside the chamber 33 or outside and inside. For external and internal heating,
Even when sufficient preheating is required, heating can be performed using a long transport distance. Long substrate heating device in chamber 33
If the internal volume of the chamber 33 itself becomes large in order to provide the inside of the chamber 33, it is better to provide a part or all of the substrate heating device outside the chamber 33 and reduce the internal volume of the chamber 33. This is because it is advantageous in handling in consideration of scattering, collection, and the like. The advantage of heating inside the chamber 33 is that the heating can be performed immediately before the application of the collision pressure or even during the application of the collision pressure. Particularly, the substrate to be transferred having a large heat capacity can be effectively preheated only in the vicinity of the surface to be transferred. And so on. In the case of a substrate heating device which also has a role of evaporating a solvent or moisture in order to dry the coating and the adhesive by the substrate coating device disposed on the upstream side, the chamber 3
3 is not preferable. A means for exhausting the evaporated solvent or moisture filled in the chamber 33 or the second chamber 71 is required, and in the case of a solvent, it is necessary to consider explosion-proof measures. Even if the substrate heating device for such a purpose is disposed outside or inside the chamber 33, it is preferable that a substrate heating device (drying furnace) for evaporation is separately disposed outside. Of course, if the undercoating is performed on a separate line, it is not necessary to use the substrate heating device as a drying device. As the heating means for the transfer-receiving substrate, induction heating and dielectric heating can be performed from the inside of the substrate. On the other hand, heater heating, infrared heating, and hot-air heating are efficient from the uneven surface side. The substrate to be transferred may also be heated from the back side. If the substrate to be transferred is heated to just before or during the application of the collision pressure after the substrate to be transferred is conveyed to the opening of the chamber 33, the heating from the back side of the substrate is preferable in view of the apparatus space. As for the heating during the application of the collision pressure, in addition to the heating on the upstream side of the collision pressure application unit, a heat source may be provided dispersedly in the gap between the ejectors (heating through the transfer sheet).

[Forced Cooling of Adhesive] When the adhesive is of a heat-sealing type, if the adhesive is forcibly cooled after the transfer sheet is in close contact with the base material to be transferred, the adhesive follows the inside of the concave portion and is formed. It promotes the fixation of the transfer sheet, prevents the transfer sheet from returning to its original shape after pressure release when the transfer sheet has a restoring force, and allows the transfer sheet (support) to be separated and removed more quickly. Therefore, transfer omission can be prevented and production speed can be improved.
In addition, in combination with the forced cooling by the cool air area, during application of the collision pressure, cooling is performed by using cooling solid particles without releasing the collision pressure, or using a cooling fluid when using a solid particle acceleration fluid. Is also good. When the heat capacity of the transfer substrate is large, in addition to the cooling solid particles and the cooling fluid, the low-temperature fluid is sprayed in the cooling area or during the application of the collision pressure, and the rollers for transporting the substrate and the belt conveyor are cooled. Thereby, the substrate to be transferred can be cooled from the back surface.

[Removal of Support] The release of the support was performed after the collision pressure was released, by passing through a cool air area and cooling the support to such an extent that the support was not cut or plastically deformed by the stress at the time of release. The transfer may be performed after the adhesive layer is solidified by the cooling or curing reaction and the transfer sheet is fixed to the transfer-receiving substrate.

[Air Vent] If the adhesive to be the transfer layer or the adhesive layer on the substrate to be transferred is not activated even if heated before application of the collision pressure, or if the adhesive is not activated, If the time process can be used, non-adhesive contact between the transfer substrate and the transfer sheet can be performed, so the transfer sheet is brought into contact with the uneven surface of the transfer substrate, and the transfer sheet and the transfer substrate It is advisable to perform “air bleeding” by forcibly removing the air in the gap. By removing the air, the air between the transfer sheet and the substrate to be transferred can be prevented from remaining “at the time of transfer”, and the transfer can be prevented. For example, in the apparatus shown in FIG.
This is performed by a suction / exhaust device 90 composed of 2 or the like. The suction / exhaust nozzles 91 are provided on the transfer layer side of the transfer sheet and on both sides adjacent to both sides along the transport direction of the transferred base material (FIG. 12).
(B) is provided along the transfer direction of the transfer substrate, and the air between the transfer sheet and the transfer substrate may be sucked and exhausted by the vacuum pump 92. The outer periphery of the opening of the suction / exhaust nozzle 91 is surrounded by, for example, a brush, and if the tip of the brush is brought into contact with the base material to be transferred and the transfer sheet, air can be vented without any trouble in transporting them. Further, it is preferable that the air be removed until the collision pressure is applied. The timing of the air release and the preheating of the transfer sheet may be started in either order depending on the speed at which the transfer sheet is preheated and softened, and the degree of softening, or both may be started simultaneously. Air bleeding is effective when the surface to be transferred of the base material to be transferred has a rough surface such as a rock surface tone or a stucco tone.

[Others] The curved surface transfer method and apparatus of the present invention have been described above, but the present invention is not limited to the above description. For example, in the description of the curved surface transfer method using the apparatus of FIG.
In this method, a continuous ejection pressure of solid particles is continuously applied by a fixed ejector while a long strip-shaped transfer sheet and a sheet-like transfer substrate are conveyed and moved integrally. The pressure contact with the transfer substrate may be stopped only at that time and the transfer sheet and the substrate to be transferred may be stopped and intermittently performed for each substrate (for example, an ejector is moved with respect to these). Similarly, in the cool air area, the transfer sheet or the adhesive in close contact with the transfer substrate is cooled by transporting the transfer substrate (and the transfer sheet) by a fixed cool air blowing device and cooling. However, the transfer substrate (and the transfer sheet) may be stopped only at that time, and the transfer may be performed intermittently for each substrate (for example, a cool air blowing device is moved with respect thereto). Further, the transfer substrate and the transfer sheet may be in the form of a single sheet, and may be supplied to the jetting device or to the cooling area. Further, the positional relationship between the ejecting direction of the solid particles of the ejector and the transfer sheet and the substrate to be transferred is not limited to the positional relationship in which the solid particles are both placed in a horizontal plane and eject the solid particles vertically downward from above. Even if the side of the transfer sheet support and the ejection direction maintain the vertical relationship, the placement or conveyance direction of the transfer sheet may be in a horizontal plane, in a slope, in a vertical plane (FIG. 7B), or the like. Further, even when the transfer sheet is in a horizontal plane, solid particles may be ejected from the support side to the lower side, that is, from the bottom to the upper side, and collide. Of course, the solid particles may be ejected at an angle to the transfer sheet support surface.

Similarly, when the transfer sheet is cooled by the cool air blowing device, the transfer sheet may be in a state other than a horizontal plane, such as an inclined plane or a vertical plane. Further, even when the transfer sheet is in a horizontal plane, the support may be blown with cold air from the lower side, that is, from below. Before passing through the cold air area, the adhesive may be heated using a heated gas (when the reaction of the thermosetting adhesive is promoted). In addition, when the inside of the chamber to which the collision pressure is applied is filled with an inert gas such as nitrogen, argon, carbon dioxide gas, or chlorofluorocarbon gas, when ionizing radiation-curable resin is used as an adhesive or the like, oxygen, water vapor, and the like in the air are removed. Inhibiting the curing of the resin may be prevented. In the cold air area, a low-temperature cooling liquid can be used in combination with the cooling gas. As the cooling liquid, water, chlorofluorocarbon or the like is used. In the combined use, for example, cooling and drying of the cooling liquid are performed by using the cooling liquid on the upstream side of the cold air area and using only the cooling gas on the downstream side. Further, before applying the collision pressure, the transfer sheet may be preliminarily pressed against the transfer base material by the elastic roller.

[Cosmetic Materials] Cosmetic materials obtained by the present invention include exterior materials such as outer walls, fences, roofs, gates, and gable boards, architectural interior materials such as walls and ceilings, window frames, doors, handrails, sills, and Kamoi. Such as fittings,
It can be used in various fields such as a surface material of furniture such as a chest, a cabinet of light electric / OA equipment, and a vehicle interior material such as an automobile.

[Post-processing] The surface of the cosmetic material after the transfer may be further coated with a transparent protective layer. Examples of such a transparent protective layer include fluororesins such as polytetrafluoroethylene and polyvinylidene fluoride, acrylic resins such as polymethyl methacrylate, silicone resins, and urethane resins.
Species or two or more kinds as a binder, and if necessary, a benzotriazole, an ultraviolet absorber such as ultrafine cerium oxide, a light stabilizer such as a hindered amine radical scavenger, a coloring pigment, an extender pigment, a lubricant, etc. Use the added paint. Spray coating, flow coating, etc. are used for coating. The thickness of the transparent protective layer is about 1 to 100 μm.

[0085]

The present invention will be further described with reference to the following examples. First, FIG. 1 shows a transfer substrate B having three-dimensional surface irregularities.
As illustrated in the plan view of FIG. 3A and the perspective view of the main part of FIG.
mm-shaped groove-shaped concave portion 401 and a brick-patterned flat convex portion 402, and a pear-finished tone having a depth of 0.1 to 0.5 mm distributed on the flat convex portion as fine irregularities. A 12-mm-thick calcium silicate plate having three-dimensional surface irregularities in which large irregularities and fine irregularities were superimposed, having fine irregularities 403 was prepared. Then, undercoating and undercoating were performed on the uneven surface by another apparatus offline. The transfer sheet S is a gravure film in which a brick-like pattern having a cement joint whose position is synchronized with the shape of the uneven surface as a decorative layer serving as a transfer layer is sequentially provided on one side of a polypropylene-based thermoplastic elastomer film having a thickness of 100 μm on a support. I prepared a printed version. As the resin for the binder of the pattern ink,
A mixture of an acrylic resin and a vinyl chloride-vinyl acetate copolymer in a ratio of 8: 2 (weight ratio) was used, and as a coloring pigment, red iron oxide, isoindolinone, carbon black, and titanium white were used.

Next, in the apparatus as shown in FIG. 12, an ejector using an impeller as shown in FIG. 3 to FIG. It is placed on the substrate transporting device 10 composed of a row of transporting rollers and transported. The substrate coating device 50 is a solvent-free hot-melt heat-sensitive melting type made of moisture-curable urethane resin. 50g of adhesive
After the m ² melt coating, the adhesive and the substrate to be transferred were heated by the substrate heating device 41 and supplied to the collision pressure applying unit 30. On the other hand, the transfer sheet S is also positioned by the sheet feeding device 20 such that the joint side of the pattern and the joint-shaped groove-shaped concave portion of the transfer-receiving substrate are aligned (registered) with the support side thereof facing upward. It was supplied to the collision pressure application section. When the substrate B to be transferred entered the chamber 33 of the collision pressure applying section, the transfer sheet was brought close to the substrate to be transferred. Then, both ends in the width direction of the transfer sheet were sandwiched between the front and back sides by a pair of endless belt-shaped sheet support devices 22. In this state, the sheet heating device 4 using radiant heat from a heating wire heater from the support side of the transfer sheet 4
At 0, preheating of the transfer sheet, activation of the adhesive, and heating of the substrate to be transferred were performed.

Next, the solid particles P have an average particle size of 0.4
A spherical zinc ball having a diameter of 2 mm was ejected from the ejector 32 to collide with the support side of the transfer sheet, and the transfer sheet was pressed against the substrate to be transferred. The rotation speed of the impeller of the ejector is 3600 [rpm
m], and the ejection speed of the solid particles was 40 [m / s].
Then, the transfer sheet is extended into the concave portion of the joint and heat-fused. Then, in the second chamber 71 as a cool air area provided downstream from the chamber 33 at a temperature of 20 ° C. by the cool air blowing device 70. A cold air consisting of (room temperature) air is blown to cool the adhesive to a temperature lower than the bonding temperature, and the solid particles remaining on the transfer sheet are moved from the end of the transfer sheet toward the lower part of the chamber by the cool air. After dropping and removing, the support of the transfer sheet was peeled off with a peeling roller 60 to obtain a decorative material D. In the decorative material, the pattern was transferred by the transfer sheet following the concave side surface of the large irregularities of the surface irregularities. Further, there was no transfer omission that occurred because the transfer sheet returned before the adhesive was fixed. Further, an emulsion paint of polyvinylidene fluoride containing 2% by weight of a benzotriazole-based ultraviolet absorber is applied to a dry thickness of 10 μm on the surface of the transfer layer of the decorative material to form a transparent protective layer.
A cosmetic material with a transparent protective layer was obtained.

[0088]

According to the present invention, a decorative material having a large three-dimensional uneven surface decorated can be easily obtained. Of course, two-dimensional irregularities such as a window frame and a sash are also possible, and in addition to a flat plate material, a tile having a wavy shape (envelope shape) as a whole, or a convex or concave curve Even those with shapes can be easily obtained. In addition, it is possible to transfer on the convex portion of the large irregular surface and also inside the concave portion (the bottom portion or the side surface which is the connecting portion between the convex portion and the bottom portion). Also,
On the convex part of large irregularities, a finer irregular pattern (for example,
Even if there is a hairline, satin finish, etc., it is possible to decorate by transfer even in the concave portion of the fine unevenness. Furthermore, before peeling and removing the support of the transfer sheet, the heated transfer sheet and the adhesive are forcibly cooled through the cold air area, so that when the adhesive is heated and activated, the adhesion of the adhesive is promoted, The support of the transfer sheet can be peeled off more quickly, and reliable transfer can be performed without causing a transfer failure such as transfer omission where a part of the transfer layer is not transferred. Further, when the transfer sheet is heated and softened, it is possible to prevent the transfer sheet formed following the inside of the concave portion of the concave-convex surface of the transfer-receiving substrate from returning to the case where there is a restoring force after releasing the collision pressure. Also,
It can also prevent the support from stretching or breaking when the support is peeled off. As a result, the production speed can be improved. Further, unlike the conventional rubber roller pressing method, there is no wear of parts such as the roller due to the concave and convex portions of the substrate to be transferred. As a result, a decorative material having an extremely excellent design property is obtained, which has never been obtained before.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram illustrating forced cooling of a transfer sheet and an adhesive in a cool air area according to the present invention.

FIG. 2 is a conceptual diagram illustrating an arrangement of a cool air blowing device for forcibly cooling a transfer sheet and an adhesive in the present invention.

FIG. 3 is a conceptual diagram (front view) illustrating one embodiment of an ejector using an impeller.

FIG. 4 is a perspective view of an impeller part of FIG. 3;

FIG. 5 is a conceptual diagram illustrating the inside of the impeller of FIG. 3;

FIG. 6 is an explanatory diagram for adjusting the ejection direction with an impeller.

FIGS. 7A and 7B are conceptual diagrams illustrating another embodiment of an ejector using an impeller, wherein FIG. 7A is a front view and FIG. 7B is a side view.

FIG. 8 is a conceptual diagram illustrating one embodiment of an ejector using an ejection nozzle.

FIG. 9 is a plan view showing various arrangement forms of the ejector. (A) is an arrangement arranged in a houndstooth check pattern, (B) is an arrangement in which the central portion is on the upstream side, and is shifted to the downstream side toward both ends.

FIG. 10 is an explanatory diagram in which a collision direction is provided with a width distribution.

FIG. 11 is a side view showing one aspect of the ejector viewed from the flow direction.

FIGS. 12A and 12B are conceptual views of one embodiment of the curved surface transfer apparatus of the present invention capable of performing the curved surface transfer method of the present invention, wherein FIG. FIG. 2 is a schematic device view of the ejector portion of the device of FIG.

FIGS. 13A and 13B are explanatory views showing an example of three-dimensional surface irregularities of a base material to be transferred, wherein FIG. 13A is a plan view and FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Solid particle ejection means (ejection device) 2 Substrate conveyance means (substrate conveyance device) 3 Cold air area 4, 4a-4f Cold air blowing means (cold air blowing device) 10 Substrate conveyance device (substrate conveyance means) 20 Sheet supply Apparatus (sheet feeding means) 21 sheet feeding apparatus 22 sheet supporting apparatus 23 sheet discharging apparatus 30 collision pressure applying unit (collision pressure applying means) 31 hopper 32 ejector (solid particle ejection means) 33 chamber 34 drain pipe 35 separation apparatus 36 vacuum Pump 40 Sheet heating device 41 Substrate heating device 50 Substrate coating device 60 Peeling roller (peeling device) 70 Cold air blowing device (Cold air blowing device) 71 Second chamber 90 Suction exhaust device (Suction exhaust device) 91 Suction exhaust nozzle 92 Vacuum pump 401 Groove-shaped concave portion 402 Flat convex portion 403 Fine unevenness 812, 812a Impeller 813, 813a Blade Root 814, 814a Side plate 815 Hollow portion 816 Direction controller 817 Opening 818 Sprayer 819, 819a Rotating shaft 820 Bearing 840 Jetting device using blowing nozzle 841 Induction chamber 842 Internal nozzle 843 Nozzle opening 844 Nozzle B Transfer base Material D Cosmetic material F Fluid P Solid particles S Transfer sheet

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hirohisa Yoshikawa 1-1-1, Ichigaya-Kagacho, Shinjuku-ku, Tokyo Inside Dai Nippon Printing Co., Ltd. (72) Inventor Haruo Miyashita 1-1-1, Ichigaga-cho, Ichigaya-cho, Shinjuku-ku, Tokyo No. 1 Inside Dai Nippon Printing Co., Ltd.

Claims (2)

[Claims] 1. A transfer sheet comprising a support and a transfer layer is opposed to a transfer layer side of a transfer sheet comprising a support and a transfer layer, and solid particles are caused to collide with the support side of the transfer sheet. Utilizing the collision pressure, the transfer sheet is pressed against the uneven surface of the transfer substrate, and after the transfer layer adheres to the transfer substrate, the support of the transfer sheet is peeled off to remove the transfer layer. A curved surface transfer method for transferring to a transfer-receiving substrate, wherein the transfer layer of the transfer sheet is transferred to the transfer-receiving substrate in one or both of a heat-softened state of a transfer sheet and a heat-activated state of an adhesive. After being bonded to the uneven surface, the transfer substrate and the transfer sheet bonded to the transfer substrate are passed through a cool air area, and a cooling gas having a temperature lower than the temperature of the heated transfer sheet or / and the adhesive, Spray at least on the support side of the transfer sheet, Copy sheets or / and adhesive after cooling, separating and removing the support of the transfer sheet, the curved transfer method. 2. The transfer layer side of a transfer sheet comprising a support and a transfer layer is opposed to the uneven surface side of a transfer-receiving base material having an uneven surface, and solid particles collide with the support side of the transfer sheet. Utilizing the collision pressure, when the transfer sheet is pressed against the uneven surface of the substrate to be transferred and is transferred, one or both of the heat softened state of the transfer sheet and the heat activated state of the adhesive. After the transfer layer of the transfer sheet is adhered to the uneven surface of the base material to be transferred, a cooling gas having a temperature lower than the temperature of the heated transfer sheet or / and the adhesive is passed through the cold air area at least to support the transfer sheet. An apparatus used for performing a curved surface transfer method of cooling a transfer sheet or / and an adhesive by spraying on a body side, wherein at least solid particle ejection means for ejecting solid particles; Opposition In the cold air area after the cooling, a cooling gas having a temperature lower than the temperature of the heated transfer sheet or / and the adhesive is blown at least to the support side of the transfer sheet to cool the transfer sheet or / and the adhesive. Means for transporting the substrate to be transferred to a position facing the solid particle ejecting means, and then transporting the substrate to a position opposite to the cool air blowing means in the cold air area; and transferring the transfer sheet to the solid particle ejecting means and the transferred medium. A curved surface transfer device, comprising: a sheet supply unit positioned between the substrate and the substrate.