JPH02573A - A method of transferring a colored uneven pattern and a transfer sheet used in the method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of transferring a colored uneven pattern and a transfer sheet used in the method.

[Conventional technology and the problem to be solved by the invention]

Traditionally, in order to give a three-dimensional effect to a pattern on a smooth surface, the pattern itself was made thicker.
Adding thickness to the pattern requires a special printing method, and it is difficult to form sharp ridges. Furthermore, it is usually difficult to print or paint on a surface with unevenness, and the -C printing method or the -C mounting method cannot be applied.

The present invention aims to solve the problems in the conventional descriptions described above, and each step itself is easy to implement.
The present invention provides a method that makes it possible to form a sharp uneven shape and a material used for the method.

[Means to solve the problem]

The present invention provides: ``(1) A method for transferring a colored uneven pattern, characterized in that each of the following steps is performed around 1.

(a) Colored layers are provided on the outer surfaces f, lI, and I of an ionizing radiation transparent sheet whose surface is removable, and an electrolytic radiation shielding layer is provided on either the front or back surface of the ionizing radiation transparent sheet or the surface of the colored layer. (bl) a step of overlapping the above-mentioned transfer sheet and a transfer substrate with a transparent or translucent ionizing radiation-curable resin layer interposed therebetween; a step of curing the ionizing radiation-curable resin layer corresponding to the portion without the ionizing radiation-shielding pattern by irradiating the ionizing radiation-transparent sheet with 1 radiation from the side of the ionizing radiation-transparent sheet; (d) peeling off the ionizing radiation-transparent sheet and curing with ionizing radiation; A step of attaching a part of the resin in the uncured portion of the transparent resin layer to the transparent sheet and removing it, and forming a hardened portion of the colored layer in close contact with the transparent sheet.

(2) Transferring the colored uneven pattern according to claim 1, wherein the transfer sheet is superimposed on the transfer substrate provided with the ionizing radiation-curable resin layer so that the colored layer and the t* radiation-curable resin layer are in contact with each other. how to.

(3) Claim 1 or 2, wherein the uncured ionizing radiation-curable resin remaining on the transfer substrate is cured by irradiating ionizing radiation.
Method for transferring the colored uneven pattern described.

(4) The method for transferring a colored uneven pattern according to claim 2, wherein the uncured ionizing radiation-curable resin remaining on the transfer substrate is removed.

(5) The method for transferring a colored uneven pattern according to claim 1.2 or 3, further comprising forming a protective layer over the entire surface after forming the hardened portion in which the colored layer is in close contact with each other.

(6) The method for transferring a colored uneven pattern according to claim 4, further comprising forming a protective layer over the entire surface after removing the uncured ionizing radiation-curable resin remaining on the transfer target substrate.

(7) The method for transferring a colored uneven pattern according to claim 5 or 6, wherein an ionizing radiation-curable layer is formed as the protective layer.

(8) A colored layer is provided on the releasable surface of the ionizing radiation-transparent sheet whose surface is releasable, and iii. either the front or back surface of the ionizing radiation-transparent sheet or the surface of the colored layer has ionizing radiation shielding property 8. ! A transfer sheet used in a method for transferring a colored uneven pattern characterized by a pattern.

(9) The transfer sheet according to claim 8, further comprising an ionizing radiation-curable resin layer provided on the colored layer. ” is the gist.

Effect C] According to the present invention, the ionizing radiation-curable resin on the base material is removed by III of the transfer sheet without being cured in the areas with the ionizing radiation-shielding pattern, and the ionizing radiation-curable resin is removed in the areas without the ionizing radiation-shielding pattern. When the radiation-curable resin is cured and remains, the colored layer is transferred only to this portion, and the boundaries of the unevenness are determined by the shape of the ionizing radiation-shielding pattern and are thus made clear.

〔Example] Embodiments of the present invention will be described below with reference to the drawings.

An example of the structure of the transfer sheet used in the present invention is explained with reference to FIG. 1. l is a TL ionizing radiation transparent sheet;
2 is a colored layer, and 3 is an ionizing radiation shielding pattern.

The ionizing radiation shielding pattern 3 is for shielding ionizing radiation when ionizing radiation is irradiated from the upper surface side of the transfer sheet, and in that sense, the position where the ionizing radiation shielding pattern 3 is provided is as shown in FIG. , the upper surface or lower surface of the ionizing radiation transparent sheet 1, or the lower surface of the colored layer 2, and when the transfer sheet is accompanied by other layers, it may be located at any position on the transfer sheet.

The radiation-transparent sheet 1 is made of a sheet or film that is transparent to ionizing radiation, and when the ionizing radiation is ultraviolet rays, for example, a sheet or film of polyester, polyamide (nylon, etc.), polypropylene, fluorine fiber resin, etc. However, those that do not contain pigments that affect ultraviolet transmittance are preferred. When the ionizing radiation is an electron beam, there are not many restrictions because the electron beam has high transparency.
In principle, the above-mentioned sorts or films that transmit ultraviolet rays can be used, and paper and the like can also be used.

The ionizing radiation-transparent sheet supports the colored layer in a transferable manner, so at least the side that supports the colored layer must be releasable.If the sheet itself is releasable, it will remain as is; It is used as a surface removable material by applying a resin or composition. The thickness of the sheet 1 is preferably 5 to 200 μm, particularly preferably 25 to 100 μm.

The colored layer 2 is for transferring and forming a colored layer onto a transfer target substrate, and is formed using various paints or inks depending on the purpose.

The colored layer 2 is transparent to ionizing radiation because it is necessary to transmit ionizing radiation to cure the ionizing radiation-curable resin, which will be described later. When the ionizing radiation is ultraviolet rays, in order to ensure ultraviolet transmittance, it is better to avoid using too many pigments and fillers that interfere with ultraviolet transmittance.
It is preferable to use pigments with extremely small particle sizes.

The colored layer 2 may be formed as a uniform colored layer (so-called base layer) or may be provided in a pattern.

In the method of the present invention, it is possible to form a pattern with the ionizing radiation shielding pattern described later, so it may be a solid layer, but it is also possible to form a complicated pattern by printing, in which case the colored layer itself is not a solid layer. It may also be a pattern layer. The pattern layer may be a printed layer of one color or a printed layer of two or more colors.

The 7rL chick radiation shielding pattern 3 is a mask pattern for partially curing and raising the ionizing radiation curable resin layer in the present invention. Although it is outside the scope of the present invention, it is also possible to provide the mask pattern with a sheet other than the transfer sheet.

When the ionizing radiation is ultraviolet rays, the material forming the ionizing radiation shielding pattern 3 may be a substance that reflects and shields ultraviolet rays, such as a filler such as titanium oxide, potassium sulfate, or calcium carbonate, or a particle size of 0. Ink containing a pigment with a large hiding power of about 3 to 10 μm, substances that absorb ultraviolet rays, such as benzophenol type, salicylate type, etc.
Examples include inks containing ultraviolet absorbers such as benzotriazole-based and acrylonitrile-based ultraviolet absorbers, light-absorbing pigments, carbon black, or quenchers (for example, metal complex salt-based or hindered amine-based) in addition to inorganic substances. Further, TLi% [When the radiation is an electron beam, examples include the above-mentioned inks and inks containing other pigment-based ones. The ionizing radiation shielding pattern 3 can be formed using these inks by a normal printing method.

Next, a method for transferring a colored uneven pattern using the above transfer sheet will be described in detail.

First, as shown in FIG. 2, the above-mentioned transfer sheet is placed on a transfer substrate 4 provided by coating a separately provided ionizing radiation curable resin layer 5, and the colored layer 2 of the transfer sheet is
The ionizing radiation curable resin layer 5 and the transfer sheet are brought into contact and brought into close contact (FIG. 3). The ionizing radiation curable resin layer 5 may be provided on the transfer sheet 4 as described above, or may be provided on the transfer sheet side, or may be provided on both the transfer sheet and the transfer substrate. When forming on the transfer sheet side, it is necessary to provide at least a position where the resin layer 5 can come into contact with the transferred substrate side. For example, in the transfer sheet shown in FIG. In the figure, it is formed on the lower surface of the colored layer).

The substrate to be transferred may be of any type, but examples include: - Plates or molded products of metal such as stainless steel, steel, aluminum, or copper; - Glass, marble, ceramics, plasterboard, asbestos cement board, and silicic acid. Calcium plate, GRC
Temporary or molded products of inorganic materials such as (glass fiber reinforced cement), ■ Boards and molded products of organic polymers such as polyester, melamine, polyvinyl chloride, diallyl phthalate, or sheets and films thereof; ■Wood, plywood, and verticles. Wooden plates or molded products such as boards; Tissue paper, bleached craft, titanium, linter, paperboard, plasterboard; polyethylene film, polypropylene film, polyvinyl chloride film, polyvinylidene chloride film, polyvinyl alcohol Plastic films such as film, polyethylene terephthalate film, polycarbonate film, nylon film, polystyrene film, ethylene vinyl acetate copolymer film, ethylene vinyl alcohol copolymer film, ionomer; metal foils or sheets of iron, aluminum, copper, etc.; Examples include composites of each of the above materials.

These transfer base materials 4 may be subjected to surface treatments such as sealing treatment and brimer treatment, and treatments to improve adhesion. A vapor deposition layer may be provided, or a pattern-printed sheet may be laminated with an adhesive.

The transparent or translucent ionizing radiation-curable resin layer 5 provided on the transfer substrate or the laminated surface of the transfer sheet is
A polymer having a radically polymerizable double bond in its structure,
It is mainly composed of oligomers, hexamers, etc., and contains photopolymerization initiators, sensitizers, and other additives such as non-reactive polymers, organic solvents, waxes, etc. as necessary, and is available in various grades. It is easily available on the market and can be used in the present invention. Further, a flame retardant, a conductive material, etc. can be mixed into the ionizing radiation curable resin layer 5 to impart functions such as flame retardancy and conductivity. Further, the resin layer 5 may be a colored layer as long as it is transparent or semi-transparent, and the radiation-curable resin 1'! 5 can be formed by a known method such as gravure coating, roll coating, flow coating, or spray coating. The thickness of the resin layer 5 is 3 μm-1
III11, especially 30 to 200 μm is preferred. The same materials and formation methods as described above can also be applied to the overcoat after transfer.

Next, the transfer sheet and the transferred substrate are stacked with the ionizing radiation-curable resin layer 5 interposed therebetween as described above, and then ionizing radiation 6 is irradiated from the side of the T1 radiation-transparent sheet 1, which is the convex material of the transfer sheet. (Figure 3).

Ionizing radiation! Typical JA6 materials are ultraviolet light and electronic cotton, but other materials can also be used.

By the irradiation with the ionizing radiation 6, the ionizing radiation curable resin layer 5 is cured in the areas where the ionizing radiation shielding pattern 3 is not provided, and the transferred substrate 4, the resin layer in which the electron radiation curable resin layer is cured, and the colored The three parts of the layer 2 are cured and integrated, and the ionizing radiation curable resin layer 5 is left uncured in a portion of the TL radiation shielding pattern 3.

When the ionizing radiation-transparent sheet 1 is peeled off after irradiation with the ionizing radiation 6, a colored layer remains on the resin layer of the four transfer substrates in the cured and integrated parts, and an uncured layer remains in the uncured parts. Because the irradiation radiation-curable resin adheres to the ionizing radiation-transparent sheet, the adhered amount becomes the sheet 1'! , lI
It is removed together with Kl, and as a result, a recess 7 in which a small amount of uncured ionizing radiation curable resin 5a remains and a cured part (convex part) 8 with a colored layer 2 on the resin layer are formed.

In the method of the present invention, a colored uneven pattern is transferred and formed through the above steps, and then, if necessary, the uncured 1i1 radiation curable resin 5a remaining on the transfer target substrate 4 is cured by irradiation with ionizing radiation. .

Further, in the method of the present invention, the uncured ionizing radiation curable resin 5a remaining on the transfer target substrate 4 is removed as necessary to form a recess 7a without the uncured resin 5a (FIG. 6). This removal can be done by various physical removal methods and chemical removal methods, but taking advantage of the high solubility of the remaining uncured parts in solvents, the uncured parts can be cured by ionizing radiation using an appropriate solvent. It is more preferable to employ a chemical removal method that dissolves and removes the resin. Solvents for dissolving and removing include ester necks such as ethyl acetate and n-butyl acetate; ketones such as methyl ethyl ketone, methyl isobutyl ketone, and cyclohexanone; alcohols such as ethanol, isopropanol, and n-butanol; used? aW1 Select and use according to the type of radiation-curable resin.

Removal by dissolution with these solvents can be carried out by simply pouring over or dipping, but a more preferable method is to apply the coating onto the transfer base and then perform puff polishing using a brush or a cotton puffing roller.

Furthermore, in the method of the present invention, since the colored layer in the colored uneven pattern to be formed is exposed at the top, in order to increase the durability of the surface, after forming the hardened part 8 as shown in FIG. 5, or as shown in FIG. After removing the uncured ionizing radiation-curable resin remaining on the transfer target substrate as shown in FIG. 2, a protective layer 9 is further formed on the entire surface.

This protective layer is preferably a transparent or semitransparent layer, but is not particularly limited thereto. For example, the adhesive layer may be formed of a similar ionizing radiation-curable resin constituting the ionizing radiation-curable resin layer 5 described above, or may be formed mainly of a resin such as aminoalkyd, polyurethane, unsaturated polyester, or polysiloxane. It is formed.

Next, the present invention will be explained in more detail by giving specific examples.

Implementation 1 p41 Polyester film (manufactured by Toshi ■) was used as the base sheet,
Using a colored pearl ink (manufactured by Moroyo Ink 0), solid printing was performed using a gravure printing method so that the thickness after drying was 3 μm, and then white ink (manufactured by Moroyo Ink 2) was used on the solid printing surface. A transfer sheet was prepared by printing an abstract pattern using a gravure plate with a plate temperature of 60 μm at the pattern portion.

On the other hand, the surface of the calcium silicate plate was treated with an alkali sealer, and the treated surface was flow-coated with a transparent ultraviolet curable paint (Nippon Paint Q (1)?) to a thickness of 100 μm.

The transfer sheet obtained above was stacked so that the printed surface was in contact with the flow coated surface, and the transfer sheet was placed 20 m from the base sheet side of the transfer sheet into an irradiation device equipped with 5 ozone-less ultraviolet lamps with an output of 8 Q w / cm. The substrate sheet was irradiated while being passed at a speed of 1/min, and the base sheet was peeled off after the irradiation.

Due to this 2.11 problem, most of the UV-curable paint adhered to the base sheet in the area corresponding to the pattern printed with white ink on the transfer sheet, and was removed from the other area, which was printed with colored pearl ink. The cured ultraviolet curable resin with a layer remained to form a colored convex pattern, and a decorative calcium silicate board with an excellent appearance and colored according to the irregularities was obtained.

Thereafter, an ultraviolet curable paint was further applied to the colored uneven patterned surface by spray coating to a uniform thickness of 5 μm, and was irradiated and cured using the same ultraviolet irradiation device as described above. As a result, the surface of the decorative calcium silicate plate had good durability.

Example 2 After peeling off the base sheet in Example 1, the remaining uncured ultraviolet curable paint was removed with ethanol to form a colored uneven pattern, and then 2 coats were further applied to the colored uneven pattern surface. A liquid-curing acrylic urethane resin was spray coated to a uniform thickness of 5 μm to form a resin layer.

As a result, a decorative calcium silicate temporary was obtained which had a clearer uneven pattern than in Example 1, was colored according to the unevenness, and had good surface durability and a beautiful appearance.

〔Effect of the invention〕

As explained above, the method of the present invention has the advantage that it is possible to easily form a concavo-convex pattern with sharp, colored convex portions.

Furthermore, according to the present invention, after peeling off the radiation-transparent sheet, the uncured TA remaining on the transfer substrate, (i) curing the radiation-curable resin by irradiation with ionizing radiation, or By further providing a protective layer over the entire colored uneven surface, it is possible to form a colored uneven pattern that is easy to remove and has excellent durability.In particular, the protective layer is made of ionizing radiation-curable resin. When formed in layers, it is easy to form and a colored uneven pattern surface with better durability can be obtained.

Furthermore, the above-described blue uneven pattern can be easily formed by using the transfer sheet of the present invention.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing an example of a transfer sheet used in the present invention, and FIGS. 2 to 6 are joint cross-sectional views showing each step of the method of the present invention. l...'::L Dispersion radiation-transparent sheet 2...Colored layer 3...''S, radiation-resistant radiation-shielding pattern/transferred group + 5th...ionizing radiation-curable resin layer 6...1 xiang Radiation 8: Cured portion 9: Protective layer No. 1 Fig. 4 Fig. 3: Ionizing radiation shielding pattern No. 2 Fig. 5a 8: Cured portion No. 5 Fig. 5: Ionizing radiation curable resin layer No. 5 Figure 3 Figure 6 Figure 6... Ionizing radiation

Claims (9)

[Claims] (1) A method for transferring a colored uneven pattern, which is characterized by performing the following steps in order. (a) A colored layer is provided on the releasable surface of an ionizing radiation transparent sheet whose surface is releasable, and an ionizing radiation shielding pattern is provided on either the front or back surface of the ionizing radiation transparent sheet or the surface of the colored layer. (b) superimposing the transfer sheet and the substrate to be transferred via a transparent or translucent ionizing radiation-curable resin layer; (c) ionizing radiation transparency of the transfer sheet; irradiating ionizing radiation from the sheet side to harden the ionizing radiation-curable resin layer corresponding to the portion without the ionizing radiation-shielding pattern; (d) peeling off the ionizing radiation-transparent sheet to remove the remaining portion of the ionizing radiation-curable resin layer; A step of attaching a part of the resin in the cured part to the transparent sheet and removing it, and forming a cured part to which the colored layer is adhered. (2) Transferring the colored uneven pattern according to claim 1, wherein a transfer sheet is superimposed on a transfer substrate provided with an ionizing radiation-curable resin layer such that the colored layer and the ionizing radiation-curable resin layer are in contact with each other. Method. (3) Claim 1 or 2, wherein the uncured ionizing radiation-curable resin remaining on the transfer substrate is cured by irradiating ionizing radiation.
Method for transferring the colored uneven pattern described. (4) The method for transferring a colored uneven pattern according to claim 1 or 2, wherein the uncured ionizing radiation-curable resin remaining on the transferred substrate is removed. (5) The method for transferring a colored uneven pattern according to claim 1, 2 or 3, further comprising forming a protective layer over the entire surface after forming the hardened portion in which the colored layer adheres tightly. (6) The method for transferring a colored uneven pattern according to claim 4, further comprising forming a protective layer over the entire surface after removing the uncured ionizing radiation-curable resin remaining on the transfer target substrate. (7) The method for transferring a colored uneven pattern according to claim 5 or 6, wherein an ionizing radiation-curable layer is formed as the protective layer. (8) A colored layer is provided on the releasable surface of the ionizing radiation transparent sheet whose surface is releasable, and an ionizing radiation shielding pattern is provided on either the front or back surface of the ionizing radiation transparent sheet or the surface of the colored layer. A transfer sheet used in a method for transferring a colored uneven pattern characterized by a textured pattern. (9) The transfer sheet according to claim 8, further comprising an ionizing radiation-curable resin layer provided on the colored layer.