JP4406975B2 - Makeup inorganic board - Google Patents

Description

【００２７】
上記結果より、印刷模様層を積層する接着層として不透明着色反応性ホットメルト接着剤を介して積層したものが密着性、隠蔽性、耐温水性に良好な性能をしめした。
【００２８】
【発明の効果】
本発明の化粧無機質板は、印刷模様層が不透明着色反応性ホットメルト接着剤を介して積層されているので、浴室、洗面、台所等の水回りに用いても密着性の低下のない意匠性に優れた化粧無機質板が得られる。
【００２９】
また、前記無機質系基材の上面にシーラー層を形成することで、アルカリの成分の溶出を防止し、表面を平滑に処理出来、印刷模様層の転移性の向上し、意匠性、密着性に優れた化粧無機質板が得られる。
【図面の簡単な説明】
【図１】本発明の化粧無機質板の断面図を示す。
【符号の説明】
１；化粧無機質板
２；無機質系基材
３；シーラー層
４；不透明着色反応性ホットメルト接着剤層
５；印刷模様層
５ａ；ベタインキ層
５ｂ；絵柄インキ層
６；表面保護層[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a decorative interior board having a good design property, and a method for producing the same, which are used for architectural interior materials, particularly in bathrooms, washstands, kitchens and the like.
[0002]
[Prior art]
Conventionally, decorative inorganic plates include inorganic substrates such as calcium silicate plates, slate plates, and cement slate plates, a release layer on one side of the transfer sheet substrate, an ink layer, polyamide-based, polyester-based, ethylene acetate It is known that a pattern is hot-pressure transferred using a transfer sheet in which hot-melt adhesive layers made of thermoplastic adhesive resin such as vinyl copolymer (EVA) are sequentially laminated, and a surface protective layer is provided. However, since a hot melt adhesive is used to bond the base material and the printed pattern layer, the adhesive strength will be obtained when exposed to a heat-resistant, water-resistant atmosphere for a long period of time in a bathroom, bathroom, kitchen, etc. In addition, since the hot melt adhesive is transparent and has low concealability, the color of the base material appears on the appearance, the sharpness of the printed pattern layer is impaired, and good design properties are difficult to obtain. There are drawbacks It was.
[0003]
[Problems to be solved by the invention]
The present invention has been made in view of such problems, and the object of the present invention is heat resistance, water resistance, no deterioration in adhesion, even when used around the water in bathrooms, washstands, kitchens, etc. An object of the present invention is to provide a makeup inorganic board capable of easily producing the makeup inorganic board while providing a makeup inorganic board excellent in design.
[0004]
[Means for Solving the Problems]
As a result of intensive studies to achieve the above object, the present inventor has found that the above problem can be solved by using an opaque colored reactive hot melt adhesive as an adhesive for a printed pattern layer, The present invention has been completed.
[0005]
That is, [I] The present invention relates to a decorative inorganic board in which a sealer layer, a printed pattern layer, and a surface protective layer are sequentially laminated on an inorganic base material. The sealer layer is made of a cured resin and an ionizing radiation curable resin The printed pattern layer is made of urethane ink transferred from the transfer sheet , the surface protective layer is made of ionizing radiation curable paint, and laminated through an opaque colored reactive hot melt adhesive. The present invention provides a decorative inorganic board characterized by the above.
[0006]
The present invention is characterized in that the printed pattern layer is laminated through an opaque colored reactive hot melt adhesive. Thereby, even if it uses the makeup | decoration inorganic board of this invention for the surroundings of water, such as a bathroom, a washroom, and a kitchen, what was excellent in the design property which does not reduce adhesiveness is obtained.
[0007]
In addition, when a sealer layer is formed on the top surface of the inorganic base material, the elution of alkali components from the inorganic base material can be prevented, and the surface unevenness of the inorganic base material can be filled and smoothed. Can be improved, the transferability of the printed pattern layer can be improved, and an inorganic decorative board excellent in design and adhesion can be obtained.
The decorative inorganic board of the present invention has excellent concealability, water resistance, and heat resistance, and also has excellent adhesion without peeling of the printed pattern layer.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be specifically described with reference to FIG. 1 which is a cross-sectional view showing the laminated structure of the decorative inorganic board of the present invention.
[0009]
The decorative inorganic board 1 of the present invention has a single layer or a plurality of layers of a sealer layer 3 laminated on an inorganic base material 2 as necessary, and a solid ink layer 5a and a pattern through an opaque colored reactive hot melt adhesive layer 4. The printed pattern layer 5 composed of the ink layer 5b is laminated, and further a surface protective layer is laminated.
[0010]
In general, the inorganic base material 2 of the present invention includes a calcium silicate plate, a slate plate, a gypsum slag plate, a gypsum cement plate, a volcanic glassy multilayer plate, and the like.
[0011]
The sealer layer 3 prevents alkaline component elution from the inorganic base material, improves the surface layer strength of the inorganic base material, smoothes the surface of the inorganic base material, smoothes the surface, and improves the adhesion of the printed pattern layer. Although it is provided in order to improve, this sealer layer 3 may not be provided, and it is preferable to provide appropriately according to a base material. This sealer layer can be provided as a single layer or a plurality of layers. Examples of the sealer include moisture curable urethane resins and polyisocyanate resins for preventing elution of alkali components, and ionizing radiation curable resins for filling and smoothing the surface irregularities. In order to improve the adhesion of the printed pattern layer, a polyol-isocyanate resin or the like can be used.
[0012]
Examples of the reactive hot melt adhesive of the opaque coloring reactive hot melt adhesive 4 of the present invention include polyurethane moisture curing type, silane moisture curing type, epoxy thermosetting type, ionizing radiation curing type, and oxygen curing type. The polyurethane moisture-curing type is preferable from the viewpoints of practical stability and device simplicity, and particularly contains a hot-melt urethane having an isocyanate group at the end as a component from the viewpoint of heat resistance and water resistance. It is preferable that
[0013]
The opaque colorant reactive hot melt adhesive 4 can be colored by adding a color pigment to the adhesive. The color pigment is not particularly limited, and a known pigment can be used as it is. From the viewpoints of concealability, sharpness of the printed pattern layer, etc., titanium-based white pigments are particularly preferable, and those containing at least 5% by weight or more in the adhesive composition are preferable. If it is less than 5% by weight, the hiding property and the sharpness of the printed pattern layer are weak, which is not preferable.
[0014]
The printed pattern layer 5 is prepared by previously applying an opaque colored reactive hot melt adhesive 4 to the printed pattern layer side of a transfer sheet 8 formed by laminating a printed pattern layer composed of a pattern ink layer 5b and a solid ink layer 5a on a transfer sheet substrate 7. The transfer sheet 8 is heated on the inorganic base material 2 in which the inorganic base material 2 or the sealer layer 3 is laminated as required while the opaque colored reactive hot melt adhesive 4 is in the molten state. After sticking and solidifying the opaque colored reactive hot melt adhesive 4, the transfer sheet substrate 7 is peeled off and laminated, or the inorganic substrate 2 or the sealer layer 3 as necessary is laminated. The opaque coloring reactive hot melt adhesive 4 is applied to the base substrate 2 in a heated and melted state. While the opaque colored reactive hot melt adhesive 4 is in a molten state, the pattern ink layer 5b and After the printed pattern layer 5 side of the transfer sheet 8 formed by laminating the printed pattern layer 5 composed of the ink layer 5a is adhered by heat and pressure, and the opaque coloring reactive hot melt adhesive 4 is solidified, the transfer sheet substrate 7 is attached. It peels and is laminated.
The transfer sheet is not particularly defined. For example, the solid ink layer 5a and the pattern ink layer 5b are formed on the surface of the polyolefin resin layer 7b of the transfer sheet substrate 7 in which the polyolefin resin layer 7b is formed as a release layer on one surface of the thin paper 7a. A layer in which an arbitrary printed pattern layer 5 is laminated is preferably used.
[0015]
Examples of the ink vehicle include nitrified cotton, vinyl acetate, and urethane, and are not particularly limited, but urethane is preferred from the viewpoint of heat resistance.
[0016]
In the present invention, the surface protective layer 6 is not particularly limited, and various paints can be used depending on the application. Examples of paints include thermosetting paints such as amino alkyd paints, urethane paints and nitrocellulose lacquer paints, ionizing radiation curable paints such as urethane-modified acrylate paints, epoxy-modified acrylate paints, and unsaturated polyester paints. However, ionizing radiation curable coatings are preferred from the viewpoint of stain resistance, solvent resistance, and scratch resistance.
[0017]
The method for producing the decorative inorganic board of the present invention is not particularly limited. For example, the opaque coloring reactive hot melt adhesive is applied to the transfer sheet (1), and the opaque coloring reaction is applied to the upper surface of the inorganic substrate. Step (2) of placing and adhering the transfer sheet so that the hot-melt adhesive is in contact, and forming a printed pattern layer on the inorganic base material by peeling the transfer sheet base material of the transfer sheet (3) A method comprising a step (4) of forming a surface protective layer by applying a resin paint on the surface of the printed pattern layer and drying, and sequentially performing each step,
Step (1 ′) of applying an opaque colored reactive hot melt adhesive on the top surface of the inorganic base material, and placing the transfer printed pattern layer of the transfer sheet in contact with the opaque colored reactive hot melt adhesive A step of adhering the transfer sheet to the inorganic base material (2 ′), a step of forming a printed pattern layer on the inorganic base material by peeling the transfer sheet base material of the transfer sheet (3), The method includes a step (4) of forming a surface protective layer by applying a resin paint on the surface of the printed pattern layer and drying, and includes a method of sequentially performing each step.
[0018]
【Example】
Example 1
Apply 100g / m ² of moisture curable urethane resin paint to calcium silicate plate, then apply 150g / m ^{2 of} polyester UV curable paint, cure by irradiating with UV light, then apply with # 400 abrasive paper 10 parts of hot-melt urethane with an isocyanate group at the end and a titanium-based white pigment are added to the ink surface of the transfer sheet in which urethane film is laminated on a transfer base material coated with polypropylene resin on thin paper and polished on the film surface. The opaque colored reactive hot melt adhesive was applied to a thickness of 60 μm using a die coater, placed on the sealer-treated substrate, and transferred with an iron roll press heated to 80 ° C. After the material is peeled off, a urethane acrylate resin is applied to the surface as a protective layer to a thickness of 100 μm and cured by irradiation with ionizing radiation. To obtain a cosmetic inorganic board.
[0019]
Example 2
An opaque colored reactive hot-melt adhesive containing 30 parts of a hot-melt urethane having two isocyanate groups at the end and a titanium-based white pigment is applied to a volcanic glassy multilayer board at a thickness of 150 μm, and a thin paper A transfer sheet in which urethane ink is laminated on a transfer substrate coated with polypropylene resin is placed, transferred with an iron roll press heated to 100 ° C., peeled off the transfer sheet substrate, and then a urethane acrylate as a protective layer on the surface. A base resin was applied to a thickness of 100 μm and cured by irradiation with ionizing radiation to obtain a decorative inorganic board.
[0020]
Comparative Example 1
The decorative inorganic board is treated in the same manner as in Example 1 except that the adhesive layer for laminating the printed pattern layer is a polyamide resin adhesive as a hot melt adhesive and transferred with an iron roll press heated to 150 ° C. Obtained.
The performance was evaluated about the decorative inorganic board obtained by the said Example and the comparative example.
The evaluation method is shown below.
[0021]
<Adhesion>
After the test piece was immersed in boiling water for 4 hours and then dried in a 60 ° C. dryer for 20 hours, the test piece was evaluated by the cross-cut tape method (JIS K5400) after two cycles.
[0022]
<Concealment>
The surface of the decorative board obtained by the above method was visually observed using an inorganic base material partially colored with white and black ink on the surface in advance, and the colors of the white colored portion and the black colored portion were compared, thereby improving the concealability. evaluated.
[0023]
Evaluation standard (circle): The color difference of a white coloring part and a black coloring part is not seen.
[0024]
Δ: A slight difference in color between the white colored portion and the black colored portion is observed.
[0025]
X: The color difference of a white colored part and a black colored part is seen clearly.
<Heat resistant water>
The decorative board obtained by the above method was immersed in warm water at 60 ° C. for 240 hours, then dried in a dryer at 60 ° C. for 24 hours, and the decorative surface was observed.
[0026]
[Table 1]

[0027]
From the above results, an adhesive layer for laminating a printed pattern layer laminated via an opaque colored reactive hot melt adhesive showed good performance in adhesion, concealment and hot water resistance.
[0028]
【The invention's effect】
The decorative inorganic board of the present invention has a printed pattern layer laminated via an opaque colored reactive hot melt adhesive, so that the design does not deteriorate the adhesion even when used around the water in a bathroom, bathroom, kitchen, etc. An excellent decorative inorganic board can be obtained.
[0029]
In addition, by forming a sealer layer on the top surface of the inorganic base material, the elution of alkali components can be prevented, the surface can be treated smoothly, the transferability of the printed pattern layer can be improved, and the design and adhesion can be improved. An excellent decorative inorganic board can be obtained.
[Brief description of the drawings]
FIG. 1 shows a cross-sectional view of a decorative inorganic board of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1; Cosmetic inorganic board 2; Inorganic base material 3; Sealer layer 4; Opaque coloring reactive hot melt adhesive layer 5; Print pattern layer 5a; Solid ink layer 5b;

Claims (3)

In a decorative inorganic board in which a sealer layer, a printed pattern layer, and a surface protective layer are sequentially laminated on an inorganic base material, the sealer layer is a sealer layer made of a curable resin and a sealer layer made of an ionizing radiation curable resin. The layer is made of urethane-based ink transferred from a transfer sheet, the surface protective layer is made of an ionizing radiation curable paint, and is a decorative inorganic board laminated via an opaque colored reactive hot melt adhesive , A decorative inorganic board characterized in that the adhesive comprises hot-melt urethane having an isocyanate group at the end and a titanium-based white pigment as essential components . Step (1) of applying an opaque coloring reactive hot-melt adhesive comprising, as essential components, a hot-melt urethane having an isocyanate group at the terminal and a titanium-based white pigment on a transfer sheet in which urethane ink is laminated on a transfer substrate Then, a sealer layer is formed by applying and curing a cured resin on the top surface of the inorganic substrate, and further forming a sealer layer by applying and curing an ionizing radiation curable resin, and then on the sealer-treated substrate. A step (2) of placing and adhering the transfer sheet so that the opaque colored reactive hot melt adhesive contacts, and a printed pattern on the inorganic base material by peeling the transfer sheet substrate of the transfer sheet From the step (3) of forming a layer, and the step (4) of forming a surface protective layer by applying an ionizing radiation curable coating to the surface of the printed pattern layer and drying it. Ri, method of manufacturing the decorative inorganic board, characterized in that sequentially carried out each step. A sealer layer is formed by applying and curing a cured resin on the upper surface of the inorganic base material, and further forming a sealer layer by applying and curing an ionizing radiation curable resin, and then on the sealer-treated substrate. A step (1 ') of applying an opaque coloring reactive hot melt adhesive comprising a hot-melt urethane having an isocyanate group at the terminal and a titanium-based white pigment as essential components, and a transfer sheet in which urethane-based ink is laminated on a transfer substrate The transfer printing pattern layer is placed in contact with the opaque colored reactive hot melt adhesive, and the transfer sheet is bonded to the inorganic base material (2 ′). A step (3) of forming a printed pattern layer on the inorganic base material by peeling, and applying an ionizing radiation curable coating on the surface of the printed pattern layer and drying it. Made from step (4) for forming a surface protective layer, the manufacturing method of the decorative inorganic board, characterized in that sequentially carried out each step.

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