JP2001157872A - Decorative sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative sheet excellent in the antifoulancy of a matte part while having an excellent visual three-dimensional feeling or material quality feeling due to a change in a surface gloss state and capable of sharply reproducing a fine matte part. SOLUTION: A decorative sheet is constituted by successively providing a topcoat layer 3 and a matte pattern 4 containing a release agent on a base sheet 1 to which a pattern 2 is applied. The topcoat layer 3 may consist of a plurality of layers 31, 32 but it is desirable to also add a release agent to at least the upermost topcoat layer 31. The matte pattern 4 or the upper topcoat layer 31 is desirably constituted of a curable resin compounded with a reactive release agent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to interior and exterior materials of buildings such as houses, fittings, furniture and fixtures, cosmetics for housing equipment and home appliances, and interiors of transportation equipment such as vehicles, ships and aircraft. The present invention relates to a decorative sheet for use as a material or the like, and more particularly to a decorative sheet useful as a surface decorative material for interior kitchen doors, kitchen cabinets, fittings, and the like.

[0002]

2. Description of the Related Art Conventionally, decorative sheets formed by printing an appropriate pattern such as wood grain on a base sheet such as paper or a thermoplastic resin film have been widely used for the above applications. . Such a decorative sheet is basically a flat design only with a pattern printed by ordinary printing, and therefore lacks a three-dimensional effect and a material effect, and cannot be wiped off by an artificial feeling.

A technique of embossing the surface of a decorative sheet by embossing, for example, a wood-grain channel-like groove, to supplement the three-dimensional appearance and material appearance is also commonly used. However, embossing plates used for embossing require time and effort to produce. Since it is expensive, it is difficult to cope with high-mix low-volume production and short delivery time, and there is a problem that the produced decorative sheet is expensive.

[0004] In view of this, the glossiness of the surface of the decorative sheet is changed depending on the location by using a printing ink or paint having a different glossiness after printing, without depending on the provision of irregularities due to embossing or the like. There is also used a method of giving a simple three-dimensional feeling and material feeling simply and inexpensively. Although there are various methods, typical methods include the following methods.

[0005] (1) After printing a pattern such as wood grain on a base sheet, first apply a low-gloss resin in a solid pattern over the entire surface, and then place a low-gloss portion such as a wood channel groove on the base sheet. A method of printing high-gloss ink on parts other than.

(2) After printing a pattern such as wood grain on a base sheet, a low gloss resin absorbing ink is printed on a portion where low gloss is desired such as a conduit groove portion, and a high gloss resin is coated on the entire surface. A method of coating and absorbing the resin applied on the resin-absorbing ink into the ink.

However, in the method (1), a low gloss resin is required to have a considerable matting degree in order to visually give a sense of gloss change, and it is necessary to add a large amount of inorganic particles such as silica. However, the added inorganic particles tend to absorb and adsorb contaminants. In addition, the matte portion is inferior in stain resistance to the matte portion, in combination with the concave portion as compared with the surrounding high gloss portion. Further, since the matte portion has a small amount of resin coating on the picture, there is a problem that physical properties such as abrasion resistance are inferior.

In the above method (2), the matte portion is made of a resin-absorbing ink, so that it is easy to absorb contaminants.
Poor stain resistance is due to the contribution of the inorganic particles added in large amounts to reduce the gloss. In addition, the resin-absorbing ink has a limited resin-absorbing ability. If the amount of high-gloss resin applied on the resin-absorbing ink is too large, the resin-absorbing ink will not be able to absorb it. High gloss resin will cover the ink and the difference in gloss will be reduced, so it is difficult to achieve sufficient surface properties due to the limitation of the amount of resin applied, In order to absorb the applied amount of resin sufficiently, the image size of the matte part cannot be made too small to secure the film thickness of the resin-absorbing ink. Is difficult.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems in the prior art, and has an excellent visual three-dimensional effect and material due to a change in the gloss state of the surface. An object of the present invention is to provide a decorative sheet which has a feeling of being excellent in stain resistance of a matte portion and which can clearly reproduce a delicate matte portion.

[0010]

Means for Solving the Problems The decorative sheet of the present invention comprises:
A decorative sheet comprising a top coat layer and a matte pattern having a lower gloss than the top coat layer on the surface of the substrate sheet on which the pattern is applied, wherein the matte pattern is released. It is characterized by containing an agent.

The decorative sheet of the present invention is a reactive release agent in which the matte pattern is mainly composed of a curable resin, and the release agent reacts with the curable resin to form a chemical bond. It is characterized by the following.

In the decorative sheet of the present invention, the curable resin, which is a main component of the matte pattern, is a two-part curable acrylic urethane resin obtained by blending an acrylic polyol resin and an isocyanate curing agent. The reactive release agent is a reactive silicone release agent having an active hydrogen group or an isocyanate group in the molecule.

In the decorative sheet of the present invention, the matte pattern contains a pigment containing a matting agent, and the ratio of the pigment to the resin is in the range of 5: 7 to 3: 2. It is characterized by the following.

Further, the decorative sheet of the present invention is characterized in that the topcoat layer is composed of one or more layers, and at least the uppermost topcoat layer contains a release agent.

The decorative sheet of the present invention is characterized in that at least the uppermost top coat layer is mainly composed of a curable resin containing a reactive release agent.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the decorative sheet of the present invention will be described below in detail with reference to the drawings. 1 to 3 are side sectional views showing an embodiment of the decorative sheet of the present invention.

In the decorative sheet shown in FIG. 1, a pattern 2, a topcoat layer 3 composed of two layers of an undercoat topcoat layer 31 and an overcoat topcoat layer 32, and a matte pattern 4 are formed on a base sheet 1. They are provided sequentially. The decorative sheet of the present invention has a point that the matte pattern 4 contains a release agent.

The base sheet 1 serves as a support for the decorative sheet of the present invention, and may be the same as the base sheet in the conventional decorative sheet. Specifically, for example, thin paper, titanium paper, resin-impregnated paper, resin-mixed paper, paper-reinforced paper, bleached or unbleached kraft paper, linter paper, woodfree paper, coated paper, inorganic paper, flame-retardant paper, Japanese paper, etc. Various papers, woven or non-woven fabrics made of natural fiber, recycled fiber, synthetic fiber, inorganic fiber, etc., synthetic resins such as olefin resin, polyester resin, polyvinyl chloride resin, acrylic resin, styrene resin, etc. A film or sheet comprising
Metal foils such as iron foils, copper foils, brass foils, stainless steel foils, aluminum foils and the like, veneers and the like, or a plurality of kinds of laminates selected therefrom can be used.

The thickness of the base sheet 1 is not particularly limited, but the basis weight is about 23 to 80 g / m ² for paper and about 20 to 300 μm for synthetic resin film. Is generally used.

By adding a volatile organic substance absorbent to the base sheet 1 as needed, a function corresponding to the problem of indoor air pollution due to volatile organic substances, which have been gaining public attention in recent years, has been developed. The property can also be given. Specifically, for example, by mixing a nitrogen-containing compound such as a protein, an amino compound, an amide, or a hydrazine derivative, it is possible to absorb and remove formaldehyde emitted from plywood or the like.

The pattern 2 is basically the same as that of the conventional decorative sheet. For example, using a printing ink or a paint obtained by kneading a coloring agent such as a dye or a pigment with an appropriate binder resin, the gravure is used. Printing method, offset printing method,
It is generally provided by an appropriate printing method such as a gravure offset printing method, a flexographic printing method, a letterpress printing method, a screen printing method, an inkjet printing method, an electrostatic printing method, a transfer printing method, and the like.

The type of the binder resin of the printing ink or paint for forming the picture pattern 2 is also optional. When the base sheet 1 is paper, for example, a nitrified cotton type, a nitrified cotton-urethane type,
Urethane-butyral, casein, etc. base sheet 1
Is a synthetic resin film or sheet, for example, vinyl chloride-based, vinyl acetate-acrylic, acrylic, amide-based, urethane-based, acrylic urethane-based, polyester urethane-based, vinyl chloride acetate-urethane-based, etc. If necessary, an isocyanate-based additive or the like is used in combination for the purpose of improving the cohesive strength or adhesion of the ink.

The type of the picture pattern 2 is optional as desired. For example, a wood pattern, a stone pattern, a cloth pattern, an abstract pattern, a geometric pattern, a character or a symbol, or a combination of a plurality of kinds selected from the above are common. However, if a color pattern is unnecessary, a single-color solid color may be used.

When the decorative sheet needs to be concealed from the base depending on the purpose of use, opaque printing containing a large amount of highly opaque pigments such as inorganic pigments or metal powder pigments in combination with a color pattern. A hiding layer of ink or paint may be provided. Prior to the application of the pattern 2 or the like to the base sheet 1, the surface of the base sheet 1 may be subjected to, for example, corona discharge treatment, ozone treatment, plasma treatment, ionizing radiation treatment, dichromic acid treatment, anchor or An easy adhesion treatment such as a primer treatment may be performed.

The picture pattern 2 may be provided on the front side of the base sheet 1 as shown in FIG. 1, or the base sheet 1 may be transparent or semi-transparent such as a transparent thermoplastic resin film or transparent paper. In the case of a transparent material, as illustrated in FIG.
It can also be provided on the back side of the base sheet 1. When the pattern 2 is provided on the front side of the base sheet 1, as shown in FIG. 3, a transparent or translucent material such as a transparent thermoplastic resin film or transparent paper is further provided on the pattern 2. The top sheet 5 made of the above material can be laminated.

A top coat layer 3 made of a suitable transparent resin composition is formed on the surface of the substrate sheet on which the picture pattern 2 has been formed in this manner. The top coat layer 3 may be a single layer, or may be composed of two or more layers. In the example shown in FIG. 1, the top coat layer 3 is composed of two layers, an undercoat top coat layer 31 and an overcoat top coat layer 32.

If the coating amount of the top coat layer 3 is too small, satisfactory surface physical properties cannot be obtained. On the other hand, if it is too large, the flexibility is lowered, causing cracks and peeling, and also increasing the cost. generally designed in a range of about from 1 to 20 g / m ^2, within a range of about 5 to 10 g / m ² being most preferred. When the top coat layer 3 is composed of two or more layers, the total coating amount of all the top coat layers 3 is designed within the above range.

When the top coat layer 3 is composed of two or more layers, the surface is smoothed, which is advantageous in terms of high gloss, pinholes are reduced and stain resistance is improved. For the top coat layer 32), a material having high physical properties is used, and for the lower top coat layer (undercoat top coat layer 31), a less expensive material such as a general-purpose urethane top coat agent is used. Therefore, there is an advantage that the manufacturing cost can be reduced without lowering the surface properties.

The top coat layer 3 is preferably formed of a curable resin in view of the surface properties of the decorative sheet. Specifically, for example, melamine resin, epoxy resin, urethane resin, alkyd resin, urea resin, phenol resin,
Thermosetting resins such as unsaturated polyester resins and silicone resins, and ionizing radiation-curable resins such as (meth) acrylate resins and unsaturated polyester resins can be suitably used.

The method of forming the top coat layer 3 is the same as that of the conventional decorative sheet, for example, various printing methods listed as the method of forming the pattern 2 described above, a roll coating method, a gravure coating method, a knife coating method, and the like. The method can be arbitrarily selected from various coating methods such as an air knife coating method, a lip coating method, a die coating method, a flow coating method, a spray coating method, and a dip coating method.

On the surface of the top coat layer 3, for example, a conduit made of wood grain, a glossy printing ink or paint having a lower gloss than the surface of the top coat layer 3 is applied to a place to be expressed in a matte shape. A blank pattern 4 is provided. Matte pattern 4
In order to obtain a desired matte state, for example, fine particles of silica, alumina, calcium carbonate, barium sulfate, titanium dioxide, zinc oxide, zirconium oxide, silicon carbide, silicon nitride, glass, zeolite, shirasu balloon, diatomaceous earth, etc. A matting agent consisting of a powder is added. Also, matte pattern 4
Is the most protruding part in the decorative sheet of the present invention, and therefore, from the viewpoint of surface properties such as abrasion resistance, it is mainly composed of the same curable resin as in the case of the top coat layer 3 described above. Is desirable.

In the decorative sheet of the present invention,
In order to improve the stain resistance of the matte pattern 4, the matte pattern 4
Is added with a release agent. Since the addition of the release agent to the matte pattern 4 reduces the adhesion of the adhesive substance to the matte pattern 4,
When a cellophane tape or the like is adhered to the surface of the decorative sheet containing the matte pattern 4 and peeled off, the occurrence of a phenomenon in which the matte pattern 4 peels off from the top coat layer 3 is prevented (improves cellophane tape resistance). It also has an effect.

Examples of the release agent to be added to the matte pattern 4 include paraffins such as polyethylene wax, fatty acid derivatives such as fatty acids, fatty acid amides and fatty acid esters.
One or more selected from metal soaps, silicone compounds, fluorine compounds and the like are used. Among them, for example, a silicone compound represented by, for example, dimethylpolysiloxane or methylphenylpolysiloxane gives the most excellent effect in terms of stain resistance. The compounding ratio of the release agent is preferably in the range of 0.1 to 10% by weight with respect to the resin component, and more preferably 0.1 to 10% by weight.
Most preferably, it is in the range of 5 to 5% by weight.

The surface of the decorative sheet of the present invention including the matte pattern 4 is exposed to repeated wiping with a rag or the like in order to remove contaminants at the time of use. In order not to reduce the contamination, the release agent to be added to the matte pattern 4
It is desirable to use a reactive release agent which reacts with the curable resin which is the main component of the above to chemically bond.

Examples of such a reactive release agent include an active hydrogen group such as a hydroxyl group, a carboxyl group, an amino group or a mercapto group, a polymerizable double bond group such as a vinyl group or a (meth) acryloyl group in the molecule, Reactive release agents such as a reactive silicone release agent containing at least one reactive group selected from an isocyanate group or an epoxy group, a hydrolyzable silyl group, and the like. According to the curing reaction mechanism of the curable resin as the main component of the matte pattern 4,
What is necessary is just to select and use what can chemically bond with this hardening type resin.

Specifically, an acrylic polyol-based resin and an isocyanate-based curing agent are blended in view of printability, curing reactivity, physical properties after curing, etc. of the printing ink for forming the matte pattern 4. A matte pattern 4 is formed by a printing ink composition containing the obtained two-part curable acrylic urethane-based resin as a main component and a reactive silicone-based release agent having an active hydrogen group or an isocyanate group in the molecule. Is most desirable.

The matte pattern 4 generally contains a pigment as a coloring agent together with a pigment as a matting agent. To improve the matting effect, it is advantageous to increase the compounding ratio of the matting agent. However, if the matting agent is added excessively, the resin content decreases relatively, the physical properties become weak, and the release agent Is also reduced at the same time, which is disadvantageous in terms of stain resistance. Therefore, it is most desirable that the ratio of the pigment component to the resin component as the matting agent and the colorant is in the range of 5: 7 to 3: 2.

[0038] In addition to the above, the matte pattern 4 may include, if necessary, for example, an antibacterial agent such as a silver-based, copper-based, or organic-based material, an anti-wear agent such as alumina or silicon carbide, an ultraviolet absorber, a light stabilizer, or a heat stabilizer. Stabilizer,
Appropriate additives such as a fungicide, a volatile organic substance absorbent, and an antistatic agent may be added.

In order to further improve the stain resistance and cellophane tape resistance of the surface of the decorative sheet of the present invention, a release agent is contained in the top coat layer 3 in addition to the matte pattern 4 described above. Is desirable. When the top coat layer 3 is composed of two or more layers, at least the outermost top coat layer 3
It is sufficient if a release agent is contained in the (top coat layer 32). As a result, the amount of the expensive release agent used can be reduced, and the production cost can be reduced. Of course, by incorporating a release agent also in the lower top coat layer 3 (undercoat top coat layer 31), the stain resistance is maintained after the top coat layer 32 is lost due to abrasion during use. It is also optional.

The kind and the mixing ratio of the release agent to be mixed with at least the top coat layer 3 (top coat layer 32) on the outermost surface are basically arbitrary as in the case of the matte pattern 4, and are not particularly limited. However, from the viewpoint of repeated wiping resistance, it is most desirable to use a reactive release agent.
Such a reactive release agent is, for example, an active hydrogen group, a polymerizable double bond group or an isocyanate group which can react and chemically bond together in a curing reaction mechanism of a curable resin as a main component of the top coat layer 3. It is also possible to use a reactive mold release agent having a reactive functional group such as in the molecule by blending it with an appropriate curable resin, or to use a monomer whose main chain before the curing reaction already has mold release properties. Alternatively, it is also possible to use a resin of a type in which a prepolymer is used as a reaction-type release agent and main agent, and this is polymerized or cross-linked and cured alone or in combination with an appropriate curing agent. As the latter example, an isocyanate-curable silicone resin or the like can be suitably used.

When a release agent is contained in the top coat layer 3, the surface of the top coat layer 3 becomes releasable by the action of the release agent. In order to secure the property, it is desirable that the matte pattern 4 is formed before the top coat layer 3 is sufficiently dried or cured, and is dried or cured together with the top coat layer 3. In particular, when the top coat layer 3 and the matte pattern 4 are mainly composed of resins that cure by a common reaction mechanism,
There is an advantage that strong adhesion is obtained by forming a chemical bond between the two.

For example, matte printing mainly using an acrylic polyol resin containing a reactive silicone release agent and an isocyanate curing agent as the matte pattern 4 using an isocyanate curable silicone resin as the top coat layer 3. When the ink is used, the latter is printed and formed before the former is completely reactive-cured and simultaneously cured by reaction, and a chemical bond is formed between the two by a urethane crosslinking reaction to obtain a decorative sheet with excellent adhesion. be able to.

A similar adhesion mechanism is as follows.
The present invention can be applied to each layer in the case of being composed of layers or more.
For example, in the embodiment illustrated in FIGS. 1 and 3, an acrylic urethane-based resin obtained by blending an isocyanate curing agent with an acrylic polyol is used as the undercoat topcoat layer 31, and an isocyanate-curable silicone-based resin is used as the topcoat topcoat layer 32. As a matte pattern 4, a matte printing ink mainly composed of an acrylic polyol-based resin blended with a reactive silicone release agent and an isocyanate curing agent is used. By sequentially coating or printing and then simultaneously curing and curing three layers, all three layers are bonded and integrated by a urethane crosslinking reaction, and a decorative sheet having excellent interlayer adhesion can be obtained.

The top coat layer 3, especially the topmost top coat layer 3 (the top coat top coat layer 32) may be coated with, for example, an antibacterial agent such as a silver-based, Silicon and other anti-wear agents, UV absorbers, light stabilizers,
Any desired functionality can be imparted by adding appropriate additives such as a heat stabilizer, a fungicide, a volatile organic substance absorbent, and an antistatic agent.

[0045]

The present invention will be described in more detail with reference to examples and comparative examples of the decorative sheet of the present invention.

Example 1 First, a wood-grain pattern was printed on the surface of a sheet-to-paper reinforced paper having a basis weight of 30 g / m ² by a gravure printing method using a nitrifying cotton-based printing ink to which an isocyanate curing agent was added. Then, a solvent-based two-part curable acrylic urethane-based resin composed of a mixture of an acrylic polyol resin and an isocyanate curing agent is applied by a gravure coating method after drying.
g / m ² to form an undercoat topcoat layer. Further, in a dry-to-touch state before curing of the undercoat topcoat layer, the amount of the isocyanate-curable silicone resin after drying by a gravure coating method 2 g / m ² to form an overcoat topcoat layer, and then, in a dry-to-touch state before curing of the overcoat topcoat layer, use a matte ink having the following composition to impart a luster to the wood-grain conduit pattern. An eraser pattern was formed by printing, touch-dried by heat drying, and cured and cured at room temperature to produce a decorative sheet of the present invention.

[0047]

Comparative Example 1 Basis weight 30 g / m^TwoFirst, attach the paper to the surface of the paper
Use nitrifying cotton-based printing ink with anate hardener
Of wood grain pattern including wood grain pipe pattern by gravure printing method
Print and form a pattern, then blend silica-based matting agent
Gravure solvent-based two-component curable acrylic urethane resin
Coating amount after drying by coating method 3 g / m ^TwoCoated on the entire surface
To form a matte resin layer, and thereafter, the hardening of the matte resin layer
No matting agent in dry-to-touch state
Gravure marking of solvent-based two-component curable acrylic urethane resin
5 g of coating amount after drying on parts other than the wood grain conduit part by the printing method
/ M^TwoTo form a glossy resin layer.
After touch drying, curing at room temperature to make a decorative sheet
Was.

Comparative Example 2 First, a wood-grain pattern was printed on the surface of a sheet-reinforced paper having a basis weight of 30 g / m ² by a gravure printing method using a nitrifying cotton-based printing ink to which an isocyanate curing agent was added. After that, a wood-grain conduit pattern is printed by a gravure printing method using a resin-absorbing ink containing a silica-based matting agent, and then a solvent-based two-part curable acrylic containing no matting agent. The top coat layer is formed by applying a urethane-based resin to the entire surface by a gravure printing method at an application amount of 5 g / m ² after drying, and the top coat layer on the wood grain conduit pattern is sufficiently incorporated into the wood grain conduit ink layer. After absorption, the composition was cured and cured at room temperature to prepare a decorative sheet.

Performance Comparison The decorative sheets of Example 1 and Comparative Examples 1 and 2 were repeatedly stained with commercially available black magic and wiped dry with a wet cloth. The dirt wiping properties were as follows. Was.

[0051]

Example 2 After a corona discharge treatment was applied to both surfaces of a 90 μm-thick transparent base material sheet made of a random polypropylene resin containing an ultraviolet absorber and a light stabilizer, a two-component curable urethane ink was used on the back surface. After the wood pattern is formed by gravure printing, a gravure coating method is performed using a two-part curable urethane ink containing a titanium oxide pigment, an iron oxide pigment, a carbon black pigment and a phthalocyanine pigment. After forming the concealing layer by the above method, a solvent-based two-part curable acrylic urethane-based resin composed of a mixture of an acrylic polyol resin and an isocyanate curing agent is coated on the surface of the base sheet by a gravure coating method after drying at 5 g / m 2.
² to form an undercoat topcoat layer. Further, in a dry-to-touch state before curing of the undercoat topcoat layer, an isocyanate-curable silicone resin is coated by a gravure coating method after drying at a coating amount of 2 g / m 2. ² to form an overcoat topcoat layer, and then, in a dry-to-touch state before curing of the overcoat topcoat layer, use a matte ink having the same composition as that used in Example 1 above. A matte pattern of a wood grain conduit pattern was formed by printing, and touch-drying was performed by heat drying, followed by curing and curing at room temperature to prepare a decorative sheet of the present invention. The wiping ability of this decorative sheet for black magic stains was equivalent to that of the decorative sheet of Example 1 described above.

Example 3 After a corona discharge treatment was applied to both surfaces of a 90 μm-thick transparent substrate sheet made of a random polypropylene resin containing an ultraviolet absorber and a light stabilizer, a two-component curable urethane ink was used on the back surface. After the wood pattern is formed by gravure printing, a gravure coating method is performed using a two-part curable urethane ink containing a titanium oxide pigment, an iron oxide pigment, a carbon black pigment and a phthalocyanine pigment. After the formation of the concealing layer, the isocyanate-curable silicone resin is applied to the surface of the base sheet by a gravure coating method to a coating amount after drying of 4 g / m ² to form a top coat layer. In the dry-to-touch state before curing of the topcoat layer, a matte ink having the same composition as that used in Example 1 Matte pattern conduit pattern formed by printing, after the touch drying by heat drying, by curing the curing at room temperature, to prepare a decorative sheet of the present invention. The wiping ability of this decorative sheet for black magic stains was equivalent to that of the decorative sheet of Example 1 described above.

Example 4 After applying a corona discharge treatment to both sides of a base sheet made of a colored random polypropylene resin having a thickness of 70 μm, first, a two-part curable urethane-based primer compounded with fine silica powder was applied to the back surface after drying. After coating at 1 g / m ² to form an easily-adhesive primer layer, a two-component curable urethane-based ink is used to print and form a wood-grain pattern on the printed surface by gravure printing. Through a two-component curable urethane dry laminate adhesive comprising a mixture of a polyester polyol and an isocyanate curing agent, to a thickness of 50 μm.
After dry laminating a transparent acrylic resin film, a solvent-based two-part curable acrylic urethane resin composed of a mixture of an acrylic polyol resin and an isocyanate curing agent is dried on the surface of the acrylic resin film by a gravure coating method. To a coating amount of 5 g / m ² to form an undercoat topcoat layer. Further, in a touch-dry state before curing of the undercoat topcoat layer, the isocyanate-curable silicone resin is dried by a gravure coating method. of the topcoat topcoat layer is formed by coating the coating amount 2 g / m ^2, thereafter, the dry to the touch before curing of the upper coating topcoat layer, the same composition as that used in example 1 The matte pattern of the wood grain conduit pattern is printed and formed using the matte ink of the present invention, and after touch drying by heat drying, curing and curing at room temperature, the present invention A decorative sheet was produced. The wiping ability of this decorative sheet for black magic stains was equivalent to that of the decorative sheet of Example 1 described above.

[0055]

The decorative sheet according to the present invention is a decorative sheet comprising a top coat layer and a matte pattern having a lower gloss than the top coat layer on the surface of the base sheet on which the pattern is applied. A sheet, in which the matte pattern contains a release agent, which is a decorative sheet having an excellent visual three-dimensional effect and material feeling due to a change in the gloss state of the surface, while the matte pattern is a decorative sheet. The surface of the matte pattern has protrusions instead of recesses on the surface, and since the surface of the matte pattern has mold release properties, contaminants are unlikely to adhere to the surface of the matte pattern, and if there is any Since it can be easily wiped off, it is extremely excellent in stain resistance. In addition, when peeling after sticking adhesive such as cellophane tape, the adhesive is easily peeled off from the surface of the matte pattern due to poor adhesion to the matte pattern adhesive, and the matte pattern is removed. Since it does not peel off from the surface of the decorative sheet due to the adhesive force of the adhesive, it is extremely excellent in cellophane tape resistance.

In particular, the matte pattern has a curable resin as a main component, and the release agent is a reactive mold release agent which reacts with the curable resin and chemically bonds to the matte pattern. The release agent contained therein is not lost even by repeated wiping of contaminants adhered to the surface, and can stably maintain excellent stain resistance and cellophane tape resistance over a long period of time.

In particular, the curable resin, which is the main component of the matte pattern, is a two-part curable acrylic urethane resin obtained by blending an acrylic polyol resin and an isocyanate curing agent. Since the release agent is a reactive silicone release agent having an active hydrogen group or an isocyanate group in the molecule, it can be used as a printing ink because it is a room-temperature-curable or thermosetting resin having an appropriate reaction rate. It is easy to use, has excellent binding power to pigments and matting agents by the action of isocyanate-based curing agents, and has sufficiently excellent surface properties such as abrasion resistance and solvent resistance required for the surface of the decorative sheet. It becomes a decorative sheet having a matte pattern.

Particularly, the matte pattern contains a pigment containing a matting agent, and the ratio of the pigment component to the resin component is 5: 7 to 5: 7.
When it is within the range of 3: 2, it has a sufficient matting effect in comparison with the top coat layer, has a sufficient coloring power, is excellent in stain resistance, and has excellent abrasion resistance and solvent resistance. A decorative sheet having a sufficiently excellent matte pattern in terms of surface physical properties is obtained.

In particular, the top coat layer is composed of one or more layers, and at least the uppermost top coat layer contains a release agent, so that the makeup is more excellent in stain resistance and cellophane tape resistance. It becomes a sheet. In particular, by making the top coat layer a multilayer of two or more layers, various characteristics required for the top coat layer are shared among the respective layers, and the amount of expensive release agent used is reduced, and overall superiority is obtained. It is possible to obtain a decorative sheet having excellent performance at lower cost.

In particular, since at least the top coat layer of the uppermost layer is mainly composed of a curable resin containing a reactive release agent, the top coat layer can be repeatedly wiped off of contaminants adhering to the surface. Excellent stain resistance and cellophane tape resistance can be stably maintained during a long-term use without loss of the release agent in the layer.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an embodiment of a decorative sheet of the present invention.

FIG. 2 is a side sectional view showing an embodiment of the decorative sheet of the present invention.

FIG. 3 is a side sectional view showing an embodiment of the decorative sheet of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base sheet 2 ... Pattern pattern 3 ... Top coat layer 31 ... Undercoat top coat layer 32 ... Top coat top coat layer 4 ... Matte pattern 5 ... Surface sheet

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) E04F 13/00 E04F 13/00

Claims (6)

[Claims] 1. A decorative sheet comprising: a top coat layer; and a matte pattern having a lower gloss than the top coat layer. A decorative sheet, wherein the eraser pattern contains a release agent. 2. The matte pattern is mainly composed of a curable resin,
The decorative sheet according to claim 1, wherein the release agent is a reactive release agent that reacts with and chemically bonds to the curable resin. 3. The curable resin, which is a main component of the matte pattern, is a two-part curable acrylic urethane resin obtained by blending an acrylic polyol resin and an isocyanate curing agent. The decorative sheet according to claim 2, wherein the mold agent is a reactive silicone release agent having an active hydrogen group or an isocyanate group in a molecule. 4. The method according to claim 1, wherein the matte pattern contains a pigment containing a matting agent, and the ratio of the pigment to the resin is in the range of 5: 7 to 3: 2. The decorative sheet according to any one of claims 1 to 3. 5. The cosmetic according to claim 1, wherein said top coat layer comprises one or more layers, and at least the uppermost top coat layer contains a release agent. Sheet. 6. The decorative sheet according to claim 5, wherein the at least the top coat layer is mainly composed of a curable resin containing a reactive release agent.