WO2000002739A1

WO2000002739A1 - Transfer coating material and method for transfer coating mirror surface

Info

Publication number: WO2000002739A1
Application number: PCT/JP1998/003142
Authority: WO
Inventors: Akiyoshi Tanimoto
Original assignee: Hyogo Trading Co., Ltd.
Priority date: 1998-07-13
Filing date: 1998-07-13
Publication date: 2000-01-20
Also published as: WO2000002970A1; AU4650999A; AU8129998A

Abstract

A transfer coating material or transfer mirror coating material usable for interior and exterior materials for building, materials for furnitures, and the like which are mass-produced by the transfer method; and a method for applying the same. A new adhesive is used which is obtained by adding a low-viscosity monomer or oligomer of a radical polymerization resin to an EB glue to reduce the viscosity of the glue and further adding a photopolymerization agent thereto in such an amount as to prevent the resin from being completely cured through UV irradiation. The adhesive is semicured by UV irradiation and a stamped film obtained with a hot-stamping press is bonded thereto. As a result, improved smoothness is obtained after transfer or after application of paper or film thereto. Further, curing and bonding can be completed by EB irradiation. Since the speed of transfer and that of paper or film application depend on the rate of curing by EB irradiation, the transfer and bonding can be conducted at a rate as high as 30 m/min or higher. The transfer coating material or transfer mirror coating material is excellent, for example, in any of appearance, fouling resistance, chemical resistance, heat resistance, flame resistance, marring resistance, and mirror finishing all required of interior materials for building.

Description

Specification

Transfer coating material and transfer mirror surface coating method

Technical field

The present invention relates to a transfer coating material that can be used for interior materials for buildings, exterior materials, furniture materials, and the like. A transfer mirror surface coating material, a transfer coating method thereof, and a transfer mirror surface coating method. The use of a new adhesive containing a photopolymerizing agent that does not promote 100% UV curing into the resin by lowering the viscosity by mixing monomers and oligomers of the radical polymerized resin of A transfer coating material that can provide a transfer coating material or a transfer mirror surface coating material that is excellent in any of the following design properties, stain resistance, chemical resistance, heat resistance, flame resistance, scratch resistance, and mirror surface properties. The present invention relates to a transfer mirror surface coating method.

Background art

As a typical representative building interior material, we have created veneers that make use of beautiful wood grain, such as sliced veneers, son veneers, and half-round veneers, from natural wood, and apply these veneers to the surface of plywood. There is a single veneer overlay plywood.

However, because it is difficult to obtain a veneer with beautiful wood grain and it is expensive, direct printing is performed by filling and filling the surface of inexpensive material, and then transferring the wood grain or the required pattern by elaborate printing. Plywood is produced and used.

In addition, as a resin overlay plywood in which a synthetic resin film, impregnated paper, or a resin laminate is pressed against the surface of the plywood, a resin film overlay plywood covered with a resin film on which a pattern or the like is printed as necessary, and a plastic overlay Laminating and overlaying are performed simultaneously, and a resin sheet made by impregnating resin or paper with resin in advance, such as a resin sheet overlay plywood using colored paper or pattern paper or a melamine resin decorative board, is attached to the plywood. There is a resin plate overlay plywood. In recent years, base materials for overlaying the above-mentioned synthetic resin films, impregnated papers, resin laminates, etc. are not limited to the above-mentioned plywoods, but also paper boards, fiber boards, plant boards, etc., in which plant fibers and wood chips are fixed with resin. Various materials such as MDF, wood cement board, rubber materials, inorganic materials, metals, and laminates of these materials have been adopted.

The conventional thermal transfer film has a pattern adhesion color layer provided on a base film via a release layer, and further has an adhesive layer laminated thereon.The adhesive layer of the thermal transfer film is brought into contact with the surface of the transfer partner material and heated. It has the function of fixing the pattern-attached color layer to the surface of the material to be transferred by applying pressure through the adhesive layer.

The above-mentioned release layer, pattern-attached color layer, and adhesive layer can be easily printed on the substrate film by various printing methods, especially gravure printing. PET film and PVC film, which are thin films, have excellent heat resistance and thermal conductivity, and have the flexibility to conform to the shape of the adherend, have been used.

In particular, from the viewpoint of durability, heat insulation, and productivity, inorganic plates such as cement boards, lightweight concrete, and ceramics have come to be used for exterior wall materials today. Initially, surface design utilizing the properties of the raw material was used, but gradually the emphasis was placed on the design as in the resin overlay plywood.

On the other hand, inorganic plates have come to be used as the base material of today's building interior materials, and with regard to the designability required as an essential function, the design is realized by the various overlay means described above. However, since it is not a natural material, there have been many demands for additional physical properties.

In other words, the characteristics required for today's building interior materials are:

(1) Pollution resistance Not to be affected by various pollutants in the home,

(2) Not to be affected by various chemical substances,

(3) Heat resistance Not to be destroyed by high temperature (eg 140 ° C), (4) Flame resistance Although it is a short time, it does not burn by flame,

(5) Scratch resistance It is required that the material has an appropriate hardness and that scratches and roots are not easily formed.

Another characteristic that is required depending on the application is specularity.

(a) The surface should be as smooth as possible without distortion,

(b) high gloss,

(c) that the above two points can be retained for many years;

Are required.

In short, today's architectural interior materials have been required to have excellent physical properties and high specularity at the same time as being applied with transfer coating to impart design properties using inorganic plates as base materials. Nothing that satisfies all has been proposed.

Therefore, it is necessary to analyze the conventional transfer films and processing methods for inorganic plates, and consider their advantages and disadvantages together with the future of production technology. The inventor's consideration is shown below.

First, regardless of the type of transfer film, there are always problems such as poor adhesion and peeling over time.

PVC films are inexpensive and have good design, but have poor heat resistance and have the problem of generating dioxins, especially when burned. There is a film coated with fluorine to impart stain resistance and chemical resistance to this PVC film, which is extremely expensive due to the fluorine treatment, but the above problem has not been solved.

Among the melamine resins, low-pressure melamine has excellent scratch resistance, but cannot be mirror-finished and has poor design properties. High-pressure melamine is excellent in various physical properties such as design properties, scratch resistance, chemical resistance, etc., but is expensive because it requires labor for production.

Dup film is excellent in various physical properties such as scratch resistance and chemical resistance, but cannot be mirror-finished and has poor design properties. In addition, various types of synthetic resin alone or films laminated with various films according to the required physical properties have been proposed, and they have the advantage of being superior in productivity because they can be simply laminated to the base material. It is not easy to change the properties and there are problems such as peeling due to poor bonding.

On the other hand, with regard to the coating process, typical urethane coatings have the advantages of easy handling, low cost and low capital investment, but they have problems with poor design and poor physical properties as described above.

UV coating can be expected to have higher physical properties than urethane, has the advantage of high productivity and low capital investment, but is difficult to apply to applications that require high hardness because the required film thickness cannot be obtained.

Inorganic coatings and fluorine coatings have the potential to produce the required high-performance products, but have the problem of poor mass productivity and the inability to provide interior materials at low cost.

If the current mainstream transfer (Hot Stamp) technology is introduced, the following problems will be added. The transfer layer has a pattern adhesion color layer and a coating film laminated on the surface of the substrate via an adhesive layer (Hot melt), but the heat resistance and flame resistance properties are remarkably affected by the adhesive layer. It degrades. For example, when the temperature becomes high, there is a problem that the adhesive layer is softened or burns and the coating film is destroyed.

Examples of transfer include paper pasting and resin film pasting.For example, as shown in FIG. 1A, a commonly used PET film 2 is provided with a release treatment layer 2a, and an ink pattern printing layer 3 and an adhesive layer 4 are formed. The stamp film 5 having a three-layer structure is pressed against the surface of the substrate 1 with a press roll heated as shown in FIG. 1B, and then, as shown in FIG. 1C.

Since the PET film 2 is peeled off, an ink pattern printing layer 3 is formed on the surface of the substrate 1 via the adhesive layer 4. Since this transfer is performed only with heat and pressure energy, high-speed transfer of 10 to 15 m or more per minute is difficult, and other paper paste and resin film paste are almost the same as heat curing of urea resin etc. Because of the use of adhesives, it was not possible to increase the speed to 30m or more. For the purpose of improving the transfer speed, an adhesive (Ε · 線 glue) made of an electron beam curing resin using electron beam curing (硬化 · Β curing) has recently been developed. The process is as follows. As shown in Fig. 2 (1), a glue 7 is applied to the surface of the substrate 1 with a roll coater 6 and, as shown in Fig. 2 (1), a stamp film 8 is provided with an ink pattern printing layer on a release-treated PET film. The glue is then laminated on the 7th layer of 先 · Εdal with a laminator or press roll 9 of a hot stamping machine, and then irradiated with an electron beam as shown in FIG. To complete the bonding, and then peel off the PET film.

The transfer method using Β · 利用 glue makes it possible to increase the processing speed because it uses electron beam curing of the adhesive, but Ε. In addition, it is difficult to apply uniformly and accurately to the surface of the base material, and there is a problem in that the surface properties after transfer, pasting, pasting, etc. are poor. Disclosure of the invention

An object of the present invention is to provide a transfer coating material that can be used for building interior materials, exterior materials, furniture materials, and the like that are mass-produced using the transfer method, and to provide a transfer mirror surface coating material. The present invention is excellent in all of the design properties, stain resistance, chemical resistance, heat resistance, flame resistance, abrasion resistance, and specularity required for building interior materials, and all properties are satisfied. It aims to provide a transfer coating material or a transfer mirror surface coating material to be added.

Further, the present invention provides a transfer coating material that satisfies all of the characteristics of design, stain resistance, chemical resistance, heat resistance, flame resistance, abrasion resistance, and specularity. The purpose of the present invention is to provide a transfer coating method or a transfer mirror surface coating method that can be easily manufactured with high productivity and mass-produced.

The inventor of the present invention has proposed that the adhesive in the transfer method using a paddle be uniformly and accurately applied to the substrate surface, and that the surface property after transfer, paper pasting, film pasting, etc. be improved. As a result of various studies for the purpose, low-viscosity radical polymerization resin monomers and oligomers were mixed into the glue adhesive to reduce the viscosity, and the resin was cured by UV. The adhesive has a low viscosity and is easy to apply because it has a low viscosity and a smooth surface can be easily formed by using a reverse roll. It was found that it could be obtained.

In addition, as a result of intensive studies on the EB / UV glue, the inventors have performed a semi-curing by UV irradiation after coating to cure a layer having a certain thickness or more from the surface, and at the same time, a resin added for lowering the viscosity. When cured, it is possible to return to the original tackiness.In other words, it is possible to improve the smoothness during the previous application and improve the adhesiveness by UV semi-curing after applying the adhesive, improving the workability When the stamp film is bonded by a hot stamping machine after semi-curing by UV irradiation, the smoothness after transfer or paper pasting and film pasting is improved, and curing is also performed by E'B irradiation to complete the bonding. Therefore, since the transfer and bonding speeds are similar to the Ε · Β curing speed, it was theoretically found that high-speed transfer and bonding up to 80 m / min were possible.

Furthermore, the inventor bonded the stamp film using this EB / UV glue, semi-cured and partially cured the UV, and examined the resin layer provided on the substrate surface in detail. Greatly improves the peel strength, heat resistance, and flame resistance of stamped films and papers, and finally, the irradiation from the top coat to the UV-cured part of the surface. It is possible to completely polymerize completely by this, and by this, it becomes a polymer resin in which each layer is chemically integrated, so that peeling strength is extremely high, and furthermore, radical polymerization by Ε The bonding strength between molecules is very strong, the resin is resistant to heat shrinkage, and there is no oxygen that causes combustion in the cured resin, so the flame resistance is remarkably improved. Designability, stain resistance, The inventors have found that a resin layer strength that satisfies all the properties of chemical resistance, heat resistance, flame resistance, abrasion resistance, and specularity has been obtained, and has completed the present invention. Description of the drawings

FIGS. 1A, 1B and 1C are explanatory views of a substrate and a stamp film showing steps of a transfer (hot stamp) method.

FIGS. 2A, 2B, and 2C are explanatory views of a substrate and a stamp film showing the steps of the transfer method using the Β · Β glue.

3A, 3B, 3C, and 3D are explanatory views of a substrate and a stamp film showing the steps of a transfer method using E'B / UV glue according to the present invention.

FIG. 4A is an explanatory view of a substrate showing an application step of an EB / UV glue according to the present invention. FIGS. 4B, 4C, 4D, and 4E show a laminated state of a transfer method using the EB / UV glue according to the present invention. FIG. BEST MODE FOR CARRYING OUT THE INVENTION

Explaining the steps of the transfer method according to the present invention, the adhesive glue, the monomer or oligomer of the low-viscosity radically polymerized resin, and the photopolymerizing agent of a degree such that the UV curing does not proceed 100% are confused. Then, as shown in Fig. 3 グルー, using the EB / UV glue whose viscosity has been reduced to a predetermined value, applying E'B / UV glue 10 to the surface of the base material 1 with a mouthpiece 16 Because of its low viscosity, it is easy to apply and if a reverse roll is used, a smooth flat surface can be easily obtained.

Next, as shown in Fig. 3Β, after coating, semi-curing by UV irradiation is performed to cure a layer with a certain thickness or more from the surface of the substrate 1, and at the same time, a cured layer 10a that is also cured with the resin added to reduce the viscosity. It can be made and restored to its original tackiness, and the adhesiveness is improved by UV curing after application of the adhesive, as well as the smoothness during the previous application.

As shown in Fig. 3C, a stamp film 11 in which an ink pattern printing layer is provided on a release-treated PET film on an uncured layer 10b on the upper layer of the EB / UV glue 10 is pressed by a laminator hot stamping machine. Paste with roll 9 and then PET fill Then, as shown in Fig. 3D, the E'B / UV glue 10 was hardened by irradiating an electron beam to complete the bonding, and the UV-cured portion from the top coat on the separately applied surface The entire process is completed by completely integrating polymerization through irradiation of Ε · Β.

The process of forming the transfer film according to the present invention will be described in detail. As shown in FIGS. 4 and 4, the EB / UV dull layer 10 is transferred to the surface of the base material 1 by a roll coater 16 and the paper layer is pasted. Only the amount corresponding to the thickness is applied, and then semi-cured by UV irradiation to form a cured layer 10a and an uncured layer 10b.

As shown in FIG. 4C, the stamped film 11 is laminated by transferring with a hot press, that is, a heated press roll, and the uncured layer is added to the patterned layer 12 where the PET film 13 is peeled off and left, or the paper laminated layer. To form an impregnated patterned layer 12.

Next, as shown in FIGS. 4D and 4E, a clear layer 14 made of a curable resin as a top coat is applied on the impregnated patterning layer 12, and then the UV light is applied to the clear layer 14 by UV irradiation. The whole of the cured layer up to the cured layer 10a is completely integrated and polymerized by Β · Β. In other words, it becomes a polymerized resin in which each layer is chemically integrated, and because of the radical polymerization by Β · Β, the bonding strength between molecules is extremely strong, it is strong against heat shrinkage, Since there is no mixing of oxygen that causes combustion, flame resistance is improved.

Mirror coating with the cross-sectional structure shown in Fig. 4 ΕThe coating method is as follows.The coating method from the clear layer 14 made of the hardening resin on the surface to the hardened layer 10a of the E'B / UV glue on the bottom is Both different resins such as EB and UV are integrated by the same resin such as monomer and oligomer of radically polymerized resin such as attarinole resin and unsaturated polyester resin, and no distortion occurs between layers. Since the adhesion does not decrease, it can withstand stress given by heat or the like under similar conditions. In particular, the clear coating film of EB resin at the top is an acrylic resin film obtained by polymerizing the basic molecules of monomers and oligomers of very high physical properties of acrylic resin with 最もThis results in a very strong coating film.

The conventional urethane coating film is a polymer and has gaps between molecules.The UV coating film has weak bonding between molecules, so all contaminants easily penetrate, and destruction by external energy can occur. Easy to get up.

In contrast, the acrylic-based EB / UV glue coating film of the present invention has low molecular weight, small intermolecular gaps, strong intermolecular bonding, makes it difficult for contaminants to penetrate, and is susceptible to destruction by external energy. Unlikely to happen.

A similar example is diamond. Diamond is basically a carbon bond and, as is well known in elemental terms, very weak, but in its formation it is produced at very high temperatures and pressures, far exceeding normal energy levels. ing. This has very high physical properties. Similarly, acrylic monomers and oligomers are also polymerized by electron beam energy, which cannot be considered normally, so that a naturally formed coating film is unlikely to be destroyed by normal state energy.

Unlike the conventional transfer layer, the impregnated patterning layer 12 uses a material that is very easy to permeate the resin molecules.When a clear resin is applied, acrylic monomers and oligomers can easily pass through. And are united.

The cured layer 10a of EB / UV glue strengthens the bonding strength of the base material by infiltrating low-molecular NCO, low-molecular acrylic monomers and oligomers, and changes the temperature and moisture of the base for many years. The movement of the material can be prevented. In other words, one of the important points in mirror-painting is to suppress the occurrence of distortion in the mirror-finished plane due to changes in the situation over time. In the present invention, it is particularly important that the solid content is reduced in all steps.

By using 100% paint, a moderately thick film can be formed, the smoothness of the coating film can be easily obtained, and the solvent-free paint has been achieved.

Hereinafter, the adhesiveness, heat resistance, chemical resistance, stain resistance, bacteriostaticity, and weather resistance obtained by the transfer mirror coating method according to the present invention will be described. Adhesion

Inorganic materials, such as gaical plates, have a small organic content required for binding inorganic particles to secure the physical properties required for the certification of noncombustible materials. Until now, it has been important to use a high-density, high-density material to improve adhesion, but it is inevitably heavy and disadvantageous.

Therefore, in the present invention, as a method of improving the adhesion strength of an inorganic material having a low specific gravity, a method of blending about 10% of isocyanate into a permeable low-viscosity UV sealer and curing the inside of the inorganic material is proposed. UV curing on the production line will not hinder polishing, etc., and will react with the OH group of the isocyanate to stop the galling of the glass plate. The effect of strengthening the binding of inorganic particles can be expected.

Heat-resistant

Conventionally, when a sealer layer provided on the surface layer of the base material, and a coloring and patterning layer, and a heat-resistant coating film as the outermost layer, a heat-resistant resin or resin is used for the sealer layer or the patterning layer. Then, there is a problem that the weak portion softens and cannot support the heat-resistant coating film, resulting in deterioration.

Therefore, in the present invention, the heat-resistant coating film (top coat), the coloring and patterning layer, and the sealer layer are formed into one acrylic resin layer, that is, an inorganic pigment is used for the transfer layer used for the patterning layer. The resin has a molecular weight greater than the molecular weight of the topcoat, so that the heat-resistant topcoat paint easily penetrates, and removes the oxygen necessary for combustion. The composition should be high in polymerization density so as not to be contained, and the coating film should be flexible so that it can withstand long-term high temperatures (around 140 ° C).

Chemical resistance, stain resistance, bacteriostatic

The use of high polymerization density, which is inherent in cured resins, will inevitably provide chemical resistance, stain resistance, and bacteriostatic properties. When the pigment is mixed with some pigments such as enamel, it is necessary to use an inorganic pigment system.

Weatherability

In order to improve the weather resistance, it is necessary to mix an ultraviolet absorber to prevent the color change of the pigment and the resin due to the ultraviolet rays.It is necessary to select an inorganic pigment or to perform a unique movement in each layer, for example, A strong adhesion between each layer of paint is generated to withstand the movement caused by the difference in expansion and contraction due to moisture absorption and the difference in expansion and contraction caused by heat. Although it is necessary to prevent the attachment of contaminants that invade, transfer coating according to the present invention enables the heat-resistant coating (top coat), coloring or patterning layer, and sealer layer to be formed into one acryl resin layer. Therefore, it has extremely high weather resistance.

Creativity

In the present invention, the following method is desirable in order to enhance the design of the coloring and patterning layer.

(1) The transfer resin layer is laminated on a sheet or roll-shaped base film for thermal transfer, and the transfer resin layer is transferred and adhered to the transfer substrate while applying heat to the transfer resin layer by pressing or rolling. In the transfer method, using a base film of 23 g / m2 to 50 g / m2 paper or aluminum foil or a composite paper of paper and aluminum foil, the transfer resin layer provided on the base film with a release layer interposed After heating, heat transfer onto substrate. (2) A transfer method in a membrane press transfer method in which a transfer resin layer is laminated on a sheet-like base film for thermal transfer and heat is applied to the transfer resin layer by applying heat to the transfer resin layer with a no-run type heat press. In the above, a biaxially stretched foamed PP film is used as the base film, and a transfer resin layer is laminated directly on the base film and thermally transferred.

(3) In the transfer method described above or the conventional transfer method, in which at least one resin layer is transferred onto a transfer-receiving substrate by coloring and / or patterning, the transfer method is applied to the transferred resin layer. Apply low molecular weight paint or resin with a smaller molecular diameter than the pigment, paint, resin, etc., on the transfer resin layer.

(4) In the above transfer method for applying a top coat, the substrate to be transferred is an inorganic plate, and the substrate to be transferred is subjected to neutralization treatment or pretreatment for providing a surface-solidification resin layer.

When performing heat transfer to fine uneven surfaces by the hot-press roll transfer method, if paper is used for the base film, the total thickness of the paper and composite base film will be reduced to fine unevenness during hot-press roll transfer. Although the thickness is set to be sufficient to prevent breakage, the conventional method of applying heat from the base film opposite to the transfer layer involves, for example, scratches on the substrate to be transferred, grooves such as grooves generated in the manufacture of the substrate, and the like. Since the concave portion is larger than the fine concave portion on the surface and has a low yield point with respect to the tension of the paper, it always breaks at the concave portion, and the substrate film does not release and remains on the transfer surface when releasing. appear.

To solve the problem, the paper may be made thicker. However, in this case, the heat conductivity of the paper is so low that the conventional method of heating from the base film side does not provide sufficient heat to the transfer layer for adhesion. Moreover, if the paper is thick, it will not fit well into fine irregularities. However, in this invention, without the duplex in a release layer provided colored pattern with the adhesive layer of the paper is not too thick ^{(23g / m 2 ~50g / m} 2), provided with a transfer layer arrangement mainly transferred This is about 50 ° C from the layer side After pre-heating the substrate to be transferred, and pre-heating the substrate to be transferred to about 50 ° C, the transfer film and the substrate are combined and transferred with a hot-press roller.

Therefore, in the present invention, a paper having a predetermined rigidity is used, the stretch is small at the time of roll winding, etc., and it is easily adapted to fine irregularities on the substrate to be transferred, and extra heat is applied to the release layer at the time of heating. Since it is not applied too much, the release from the base film is better than before, which has the effect of improving the bonding reliability of thermal bonding.Also, the activation of the transfer layer can be promoted by preheating, and transfer and bonding Efficiency is improved, and no extra tension is needed on the paper, and it does not break at the aforementioned recess. In addition, the composite substrate film made of paper and resin according to the present invention has the following advantages over the conventional substrate films made of PET film and PVC film. That is, conventional PET film and PVC film substrates cannot be preheated to about 50 ° C because heating the film to about 50 ° C stretches the film itself, but this invention uses paper base. The use of a film eliminates unnecessary elongation of the base film, makes it possible to perform printing while ensuring dimensional accuracy when the transfer layer is printed, and can further increase the transfer speed.

In the present invention, the composite substrate film made of paper and resin can be used as a composite substrate film of aluminum foil and resin film, or a composite substrate film of aluminum foil and paper and a resin film. By using this, there is an advantage that heating from the base film side can be performed efficiently. As the aluminum foil, various known thicknesses can be used, but a laminate of a polyethylene sheet or a polypropylene sheet is preferable for improving the releasability of the transfer layer.

In this invention, the sheet or paper roll 23 g / m ² of Ru used thermal transfer base one Sufuirumu ~ 50 g / m ^2, such as kraft paper are available, 30 g / m ² or more preferably paper. Also, there is one side to promote the releasability of the transfer resin layer and prevent migration. Alternatively, polyethylene, polypropylene, or the like can be used for the release layer provided on both surfaces, and a laminate of these sheets is preferable.

Conventionally, the membrane press transfer method was used (as a base film for iPVC film. The reason for this is that PVC film can be relatively easily stretched in response to an increase in heat, and is transferred to a three-dimensional shape. However, there was a problem that the temperature control had to be controlled and maintained in an extremely narrow range of 170 to 175 ° C in order to conform to the three-dimensional shape.

The present invention is characterized in that a biaxially stretched foamed PP film is used as a sheet-like base film for thermal transfer, and the biaxially stretched foamed PP film has good heat resistance and can be used at the time of pressing. The film stretches well and contains many air layers, so it has excellent follow-up to the elongation force. Also, the thermal force from one direction exceeds the softening point of the resin. Since it functions as a material, the rigidity of the base film as a whole is ensured, and the resin layer can be transferred with good adhesion onto the surface of the plate material with irregularities.

That is, the foamed PP film of the biaxially stretched type, when tensile same force at the same temperature conditions as compared with a solid PP film, it greater than厶L ₂ of the elongation amount ΔΙ ^ (iPP film It has the property that it is easier to adjust to the 3D shape than the solid PP film, and it is wider than before to adjust to the 3D shape.

Transfer was possible by controlling the temperature from 150 ° C to 175 ° C.

In the present invention, the transfer resin layer may have any one of known one to many layers. For example, when an inorganic plate is used as the substrate to be transferred, it is subjected to an alkali neutralization treatment or a pretreatment for providing a surface-solidification resin layer, followed by a colored undercoat, and then a transfer and lamination of a transparent resin layer on which a color pattern is printed. Or, by transferring and laminating a transparent resin layer printed with coloring and color pattern, by combining the uneven surface of the substrate, the pattern and the transparent colored pattern of the transfer sheet, while taking advantage of the pattern and the color developing action of the substrate, Various design patterns can be applied. By using a structure in which a colored undercoat transparent resin layer, a transparent resin layer with a colored pattern, and a colored overcoat transparent resin layer are sequentially laminated on the transfer resin layer, a small number of By combining these resin films, many patterns such as wood grain and color patterns can be produced with good reproducibility. In addition, a two-layer film in which a colored undercoat transparent resin layer and a transparent resin layer with a colored pattern are a transfer film and pre-laminated, or a three-layer film in which each transparent resin layer is a transfer film and a pre-laminated transfer film. By configuring, mass productivity is improved. In the present invention, the target substrate is not only a natural wood board but also a veneer overlay plywood in which a veneer such as a sliced veneer, a thorn veneer, a half-round veneer, a single-ply tally veneer is adhered to the surface of the plywood. Not only plywood, but also veneer, plywood, fiberboard, particle board, MDF, wood cement board, which is made by hardening vegetable fibers and wood chips with resin, rubber materials, various ceramics, etc. Various materials such as inorganic materials, metals, and laminates thereof can be used.

In the present invention, a transparent resin material such as a transparent film, a transparent adhesive, a colored transparent paint can be appropriately selected for the resin layer to be laminated, and an acrylic resin film, a vinyl chloride resin film, polypropylene Resin film, resin film formed on a release-treated base film with acrylic polymer, vinyl polymer, cell opening derivative, epoxy resin, etc. Transparent film suitable for laminating is acrylic Or a transparent film of vinyl chloride is desirable.

Examples of the transparent adhesive include a solvent-type polyurethane adhesive, a moisture-curable polyurethane adhesive, an acrylic adhesive, and a vinyl acetate adhesive. Colored transparent coatings include polyurethane coatings, UV-curable epoxy coatings, polyester coatings, acrylic coatings, and aminoalkyd coatings. Examples of film-forming resins that can be dissolved in paint solvents include acrylic polymers, vinyl polymers, polyethylene wax, and wax. A resin film having a thickness of about 2 to 3 μιη is preferably formed using a resin such as oxyresin or a cell mouth derivative.

Depending on the method of bonding the resin film to the substrate, the adhesive side of the transparent resin film to be colored undercoat is arbitrarily determined as to whether an adhesive is to be applied to the film or to the substrate in advance. When the colored patterned transparent resin film and the colored overcoating transparent resin film are laminated, the basic configuration is the same except for the order of lamination. At this time, examples of the colored undercoat or overcoat transparent resin film to be applied include a vinyl chloride resin and an acrylic resin film, and the colored undercoat include a vinyl acetate film. In addition, the three-layer laminate structure is basically performed by the same lamination method as the two-layer structure.

In the present invention, a low-molecular-weight paint or resin, such as a pigment, a paint, and a resin used for the transferred resin layer, is applied on the transfer resin layer so that the coloring and patterning resin layer is applied to the base material. The patterning is strengthened, but as a specific example, when the colored undercoating transparent resin layer, the colored patterning transparent resin layer, and the colored overcoating transparent resin layer are sequentially laminated, the colored undercoating transparent resin layer and the coloring The overcoating transparent resin layer uses a paint such as urethane paint, UV-curable polyester, UV-curable epoxy, or UV-curable acryl, and the colored pattern-transparent resin layer is a thermal transfer sheet made of the above acryl polymer or the like. Lamination allows the color tone and pattern to be firmly fixed to the substrate.

Therefore, the method according to the present invention provides a transfer coating material or a transfer mirror coating material which satisfies all the properties of design, stain resistance, chemical resistance, heat resistance, flame resistance, abrasion resistance and specularity. It can be manufactured easily and with high productivity by mass production.

Process control

Hereinafter, the process control in the case of performing the coating according to the present invention on the gaical plate will be described.

1) A backside sanding process is performed to control the thickness of the gaical plate (grinding). 2) A surface sanding process is performed to ensure the smoothness of the surface of the glass plate (grinding → polishing).

3) To prevent warping of the car board, apply a UV seal on the back side.

4) Apply a UV drying process to completely cure the UV sealer.

5) In order to enhance the adhesion between the substrate particles by sufficiently penetrating the NCO into the base material of the quartz plate, and to neutralize the alkali by reacting the NCO with the OH groups in the car plate. Apply NCO + 10% white base process.

6) Apply an NCO scraping step to completely scrape any NCO remaining on the surface to apply the UV filter.

7) In order to completely fill the gaical plate and reduce the load on the sealer sander, apply one UV filter process.

8) Apply a UV drying process to completely cure the UV filter.

9) In order to smooth the surface roughness of the surface of the gaical plate capped with the UV filter, a sealer polishing process is performed.

10) UV white glue must be used to ensure that the transfer film in the next process can be applied quickly and easily, and that acrylic monomers and oligomers, the main resin of Glue, infiltrate into the transfer film. use.

Apply glue to the base material surface so that the transfer film of the next process can be applied at high speed and easily. Apply glue to the base material surface so that the transfer film of the next process can be applied at high speed and easily. This is because the applied glue uniformly impregnates the transfer film and the main resin of the glue is surely mixed into the transfer film.

To achieve these, it is required that the adhesive be applied uniformly and easily, that the applied adhesive surface have sufficient tackiness, and that a certain amount of resin be impregnated into the transfer film. Is done. Example

Example 1

Ε · Β The following steps were performed as a mirror-surface transfer coating using transfer and transfer. Process 1 Polishing the back side of the car board, dimensional tolerance within ± 0.05mm

Process 2 Surface polishing, dimensional tolerance within ± 0.05mm

Process 3 Backside UV curable sealer, urethane coating for the purpose of warping and improving water resistance Process 4 Drying, UV drying, hot air drying

Process 5 Surface isocyanate coating or UV sealer coating

Add about 10% solution to UV curable paint

Process 6 Scraping of isocyanate or UV-curable sealer (but not necessary if permeability is good)

Process 7 Dry Not required if it does not affect UV filler application

Process 8 UV filter application

UV-curable polyester paint, UV-curable acrylic paint, and in some cases, ordinary thermosetting polyester paint, urethane paint, etc.

Process 9 UV drying

Process 10 Sealer polishing

Process 11 UV curable glue coating (characterized by complete curing and UV curing semi-curing) Process 12 UV semi-curing

Process 13 transfer or lamination

As long as it is easily impregnated, the material can be any of printing paper, transfer, and resin film.

Process 14 Apply pressure with a Ε · Βcurable top coat roller

Step 15 Β · Β curing type top coat Improve smoothness with curtain coater Step 16 Ε · Β irradiation and curing completed Through the above steps, mirror transfer coating was applied to the required surface of the gaical plate.

Example 2

Ε · Β The following steps were performed as a mirror-surface transfer coating using transfer and transfer. Process 1 Polishing of the back of the gaical plate, dimensional tolerance within ± 0.05mm

Process 2 Surface polishing, dimensional tolerance within ± 0.05 nmi

Process 5 Make a paint containing isocyanate in a UV curable filler, infiltrate the paint into the base material by the pressing force of the reverse roll coater, and form a coating film on the surface

Process 6 UV drying

Process 7 Sealer polishing

Process 8 UV curable glue application

Process 9 UV semi-curing

Process 10 Transfer or lamination Here, the material is printing paper

Process 11 Β · ΒCurable type top coat Apply pressure with roller

Step 12 Improve smoothness with a curable top coat curtain coater Step 13 Complete irradiation and curing

Through the above steps, mirror transfer coating was applied to the required surface of the gaical plate.

Example 3

Process 2 Surface polishing, dimensional tolerance within ± 0.05mm

Process 3 Backside UV curable sealer, urethane coating for the purpose of warping and improving water resistance Process 4 Drying, UV drying, hot air drying Step 5 Make a paint containing isocyanate in the UV curable film, infiltrate the paint into the substrate under the pressure of the reverse roll coater, and form a coating film on the surface

Process 6 UV drying

Process 7 Sealer polishing

Process 8 Low viscosity Ε

Process 9 semi-cured

In order to make only the surface of the Β- 未 glue uncured, hold oxygen at 200 ppm or more at a concentration of about 5% to keep the glue from being cured. Ε Irradiate and cure.Step 10 Transfer or lamination.

Process 11 Ε.ΒApply pressure with a hardening type top coat roller

Step 12 Improve smoothness by using a hardening type top coat force coater.Step 13 Complete irradiation and curing.

Through the above steps, mirror-surface transfer coating was applied to the required surface of the scalp.

Example 4

The following steps were performed in order to obtain a product similar to a mirror-transferred coated product using Ε · Ε painting and transfer without using Ε · Β.

Process 1 Polishing the back side of the car board, dimensional tolerance within ± 0.05mm

Process 2 Surface polishing, dimensional tolerance within ± 0.05mm

Process 3 back urethane sealer

Process 4 drying, hot air drying

Process 5 塗布 Retensioner coating (2 liquid type)

Process 6 drying

Process 7 polishing

Process 8 Urethane filler application

Process 9 Sealer polishing Process 10 Urethane type adhesion sealer application

Process 11 semi-dry

Process 12 transfer or lamination

Process 13 UV curable top coat Pressure coating by roller coater Process 14 UV curable top coat Curtain coater

Process 15 UV drying or N ₂ gas UV drying

Through the above process, mirror-transfer coating was applied to the required surface of the car board without using Ε · Β.

Example 5

In Example 1, Step 13 is a post-transfer and lamination step.

Process 14 Ε · ΒCurable Topcoat Thinner Use カーテン · Βcurable resin to lower viscosity and use curtain coater

Process 15 thinner drying

Process 16 Irradiation and curing

By doing so, mirror transfer coating was applied to the required surface of the car board. Further, in the same process as in Examples 2 to 4, the top coat can be cured after evaporation of the thinner.

Example 6

In Examples 1 to 3, mirror transfer transfer coating was performed in the same process using an aluminum plate instead of the gaical plate.

Example 7

In Example 1, a wood material (MDF, P.B, etc.), here a particle board (P.B), was mirror-transferred in the same process as in the case of the car board.

Example 8

A comparative test was conducted on the chemical resistance performance of the mirror-transferred coating obtained by Example 1 to Example 3 and the conventional high-pressure melamine material. Table 1 shows the test results. You. In the table, ◎ indicates little change, 〇 indicates slight coloring and stains, Δ indicates coloring and stains, X indicates marked coloring and stains. The test method is based on JIS A5703. Approximately 0.2 ml of the reagent is dropped on the surface, covered with a watch glass, left at room temperature for 24 hours, and cleaned with a dry cloth to observe the surface condition.

Table 1 Chemical resistance performance

Test solution (concentration) Ε · Clear High-pressure melamine hydrochloride (5%) ◎ X

Hydrochloric acid (10%) ◎ X

Sulfuric acid (5%) ◎ X

Sulfuric acid (10%) ◎ X

Glacial acetic acid (98%) ◎

Sodium hydroxide (5%) ◎ ◎

Sodium hydroxide (10%) ◎ ◎

Case ◎ ◎

Hydrogen peroxide (31%) ◎ 〇

Black mouth Holm (99%) ◎ ◎

Ethanol ◎ ◎ Example 9

In Example 7, the particle board was subjected to mirror-transfer coating according to the specifications of Sample 1) and Sample 2) according to the process of Example 1. In addition, the conventional melamine coating was applied according to the specifications of sample 3) and sample 4). The sample specifications are as follows.

1) Particle board EB acryl (with white luster): 15 (mm)

2) Particle board EB acryl (white-gloss): 15 (mm)

3) High pressure melamine (particle): 15 (mm)

4) MDF low pressure melamine (white): 10 (mm)

Using the above specimens, an antibacterial activity test was performed by the drop method. Table 2 shows the test results for Escherichia coli and Table 3 shows the test results for Staphylococcus aureus.

Antibacterial test results by the drop method

10: Not detected Control: Po Bacterial solution preparation solution: 1 / 500NB medium Antibacterial test results by the drop method

Example 10

Heat resistance and flame resistance tests were performed using the panels manufactured in Examples 1 to 7 and subjected to the mirror surface transfer coating according to the present invention.

The heat resistance was evaluated based on no deformation or breakage after holding at 140 ° C for 4 hours.

Flame resistance was evaluated by the change in surface after the flame was applied for 30 seconds with an alcohol lamp.

In the heat resistance test, deformation was observed in the case of Example 4 where no paint was applied, but there was no deformation or peeling in the other cases.

In the flame resistance test, the surface of Example 4 was charred black when exposed to a flame with an alcohol lamp for 10 seconds, but the others did not ignite, had no burn marks, did not peel, and did not deform. Industrial applicability

In the transfer mirror surface coating method according to the present invention, the EB glue adhesive is mixed with a monomer or oligomer of a low-viscosity radically polymerized resin to reduce the viscosity, and further, the resin is provided with a photopolymerizing agent of a degree that does not promote 100% UV curing. It is characterized by the use of newly mixed resin and adhesive, and after application, semi-curing by UV irradiation to cure a layer of a certain thickness or more from the surface, and at the same time, the resin added to reduce the viscosity When cured, it is possible to return to the original adhesiveness, and it is possible to apply the adhesive in the transfer method uniformly and accurately on the substrate surface, and also to improve the adhesiveness and workability, so that UV Bonding the stamp film with a hot stamping machine after semi-curing by irradiation improves the smoothness after transfer or paper pasting and film pasting, and also allows EB irradiation to complete the curing-bonding. Since the transfer and re-bonding speeds follow the curing speed, high-speed transfer and bonding of 30 m / min or more are possible.

The transfer mirror surface coating method according to the present invention has a great advantage in that the peel strength, heat resistance, and flame resistance of a stamp film, paper pasting, etc. by using UV glue are greatly improved. It is possible to carry out complete integrated polymerization by EB irradiation up to the UV-cured part in a lump, which results in a polymerized resin in which each layer is chemically integrated. Furthermore, due to radical polymerization by Ε · Ε, the bonding force between the molecules becomes very strong, and it becomes strong against shrinkage due to heat, and there is no mixing of oxygen, which causes combustion, in the cured resin. There is a significant improvement.

The transfer mirror surface coating method according to the present invention can form a resin layer that satisfies all of the properties of design, stain resistance, chemical resistance, heat resistance, flame resistance, scratch resistance, and mirror surface. According to the present invention, it is possible to provide a high-quality transfer mirror surface coating material that can be used not only for architectural interior materials satisfying the above-mentioned characteristics but also for furniture materials having excellent designability and mirror finish at a low cost. Since a thick film can be transferred and coated on metal, an exterior material having extremely high weather resistance and flame resistance can be provided.

Claims

The scope of the claims

1. In a transfer coating material having at least a transfer layer and / or a patterned layer on the required surface of the base material via an adhesive layer and having three resin layers of the top coat on the surface, A transfer coating material that has a resin film that uses the same resin system of the monomer and oligomer of the radical polymerized resin and is cured by 一体 (electron beam) and polymerized integrally.

2. The transfer coating material according to claim 1, wherein the monomer or oligomer of the radically polymerizable resin is an acrylic resin.

3. The transfer coating material according to claim 1, wherein the base material is an inorganic material and / or a metal or alloy material.

4. A transfer coating method in which a transfer layer and / or a patterned layer is provided on at least the required surface of the base material via an adhesive layer and three resin layers of a top coat on the surface are laminated, A monomer or oligomer of a low-viscosity radically polymerized resin is mixed with an amount of a polymerizing agent that does not completely cure the UV (ultraviolet), and after applying an adhesive layer whose viscosity has been reduced, UV irradiation is performed. Then, a transfer layer and / or a patterned layer is provided by transfer or lamination treatment, and thereafter, after laminating the curable resin layer as a surface layer, all layers are irradiated by irradiation. A transfer coating method that cures to form a resin film that is integrally polymerized.

5. UV (ultraviolet) curing in a transfer coating method in which a transfer layer and / or a patterned layer is provided at least on the required surface of the base material via an adhesive layer and three resin layers of the top coat on the surface are laminated. After the glue adhesive layer is applied, a part is cured by UV irradiation, a transfer layer and / or a patterned layer is provided by transfer or lamination processing, and then the Β-curable resin layer is used as a surface layer. A transfer coating method in which after lamination, all layers are cured by irradiating to form a resin film that is integrally polymerized.

6. A transfer coating method in which a transfer layer and / or a patterned layer is provided on at least the required surface of the base material via an adhesive layer, and the three resin layers of the top coat on the surface are laminated. , After applying an adhesive layer composed of a low-viscosity EB-cured glue, Ε-irradiation is performed to partially cure the adhesive layer, and a transfer layer and / or a patterned layer is provided by transfer or lamination processing. (4) A transfer coating method in which, after laminating a curable resin layer as a surface layer, all the layers are cured by irradiation with heat to form an integrally polymerized resin film.

The resin according to any one of claims 4 to 6, wherein the resin used is the same resin of a monomer and an oligomer of a radically polymerized resin, and the transfer layer and / or the patterned layer has a property that the resin can be impregnated. Transfer coating method made of resin or paper.

8. In claim 7, the monomer or oligomer of the radical polymerization resin is a low molecular weight resin having a small molecular diameter such as a pigment, a paint, and a resin used for the transfer layer and / or the patterned layer. A transfer coating method.

9. The transfer coating method according to any one of claims 4 to 6, wherein a force for scraping after a step of applying a resin or the like or a reverse roll is used to ensure the flatness of the laminated material.

10. The transfer coating method according to any one of claims 4 to 6, wherein a UV-curable or thermosetting filler is applied to smooth the substrate.

11. In any one of claims 4 to 6, in order to improve the adhesion strength of the resin layer to the inorganic substrate, apply isocyanate or a UV-curable sealer to the surface of the substrate, or a UV-curable paint. A transfer coating method in which isocyanate is added to a paint.