JP2573677C - - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a decorative material such as flooring and wallpaper. [Prior Art] Conventionally, it has been customary to produce a decorative material having a pattern protruding from the surface by using an ink having a large solid content or printing by a printing method having a large ink transfer amount. Further, there is a method of forming a concavo-convex pattern by suppressing foaming with a foam suppressing ink, which is conventionally known as a chemical emboss. This is described, for example, in JP-A-51-10.
As described in Japanese Patent No. 5368, a composition layer in which a foaming agent that decomposes by heating is mixed with a thermoplastic resin is formed on a substrate (11), and a part of the foamable thermoplastic resin layer is foamed. Foaming resin (12) by suppressing foaming with restraining ink (18)
A decorative material such as a flooring material and a wallpaper having an image layer which forms a pattern (13) in which foaming is suppressed and which is recessed from the foamed resin surface and has different depths of embossed concave portions is known. . (See FIG. 2) [Problem to be Solved by the Invention] The decorative material manufactured by the printing method which has been conventionally performed usually has a viscosity of the ink when an ink having a high solid content is used in the manufacturing process. The printability deteriorated due to the change in elasticity, which was not preferable. In addition, when using a printing method with a large amount of ink transfer, there is a disadvantage that the drying speed after printing is reduced, and there is also a disadvantage that a printed pattern is liable to be broken or a blocking phenomenon occurs after being manufactured and wound or deposited. Was. As described in JP-A-51-105368, the decorative material of the chemical embossing method can form a concave portion (13) depressed from the surface of a foamed resin layer (12) after foaming.
Since no convex pattern protruding from the surface of the foamed resin layer (12) was formed, the uneven pattern was poor in volume, the contrast of the unevenness was small, and the pattern lacked clarity and fineness. In addition, since the foaming inhibitor such as trimellitic anhydride used here has a performance deterioration with time due to moisture absorption, the halftone portion with a small amount of suppression (that is, the amount of coating) stably reproduces the dent depth. However, in actual production, there was no suppression on the stability of uneven gradation and two gradations of complete suppression. The present invention eliminates the drawbacks in the manufacturing process of the decorative material manufactured by the above-described printing method and chemical embossing method, and has a pattern with a larger unevenness gradation expression than conventionally known decorative materials, and has clarity or fineness. The present invention provides a decorative plate having a multi-step uneven pattern having the following. [Means for Solving the Problems] In order to solve the above problems, the present invention provides a foamed resin layer (2) formed on a substrate (1), and the foamed resin layer (2) has a foamed resin layer. (2) It has a convex foaming resin pattern (4) (5) protruding from the surface and a concave foaming suppressing pattern (3), and has a foaming suppressing ink on the foaming suppressing pattern (3). (8) a resin pattern of one color or more foam consisting of foamed resin is suppressed to react to (9) and the foam control ink (8) 1 or more colors convex foamed resin pattern consisting of the reaction was not foaming resin (10) And a cosmetic material having both . In addition, the decorative material can be provided with a normal ink pattern (7) and / or a transparent surface protective layer (6) as appropriate. [Effect] In the cosmetic material of the present invention, in the production process, the foaming-suppressing ink (8), the foaming resin reacting with the foaming-suppressing ink, and the foaming property are added to the heat-foamable resin layer before heating and foaming. After printing or transferring the foamable resin that does not react with the ink in a pattern, by heating the whole, a foamable resin layer, a portion of the foamable resin that reacts with the foamable ink that does not come into contact with the foam suppression ink, and It is manufactured by foaming a foamable resin that does not react with the foam suppressing ink. At this time, foaming of the foamable resin and the foamable raw material that reacts with the foaming ink in contact with the foaming suppression ink are suppressed. As described above, since the present invention is completely different from the method of forming a convex pattern by a printing method conventionally used in the related art, there is no drawback based on applying the printing method. In addition, the present invention is significantly different from the known chemical embossing method in that both a foamable resin ink that reacts with the foam-suppressing ink and a foamable resin ink that does not react with the foam-suppressing ink are used. It has become possible to express uneven gradations sharply. Embodiment FIG. 1 shows an embodiment of the decorative material of the present invention. In general, a foamed resin layer (2) is formed on a substrate (1), and the foamed resin layer (2) is formed. Has a convex foaming resin pattern (4) (5) protruding from the surface thereof and a concave foaming suppressing pattern (3). On foamed suppression pattern (3) is convex consisting foamed resin which does not react in the foam control ink (8) resin pattern foaming was suppressed consisting foamed resin which reacts to (9) and the foam control ink (8) It has a structure in which both foamed resin patterns (10) are formed. The decorative material may be provided with a normal ink pattern and a transparent surface protective layer as necessary. The resin pattern (9) and the convex foamed resin pattern (10), in which the foaming is suppressed, are formed continuously with the convex foamed resin patterns (4) and (5) on the surface of the foamed resin (2). May be present, or may be present in a discontinuous state on the foam suppression pattern (3). Therefore, the substrate (1) is selected from asbestos sheet, paper, especially glass fiber mixed paper, woven fabric, especially glass fiber woven fabric, non-woven fabric, especially glass fiber non-woven fabric, and before the foaming of the foamed resin layer (2), It functions as a carrier for supporting the heat-foamable material. The foamed resin layer (2) is formed by adding a heat-foamable foaming agent to a thermoplastic synthetic resin and foaming the heat-foamable material formed into a film or a sheet. As the thermoplastic synthetic resin, For example, polyolefins such as polyethylene and polypropylene: polyolefin copolymers such as ethylene-vinyl alcohol copolymer, polystyrene, polyvinyl chloride, polyvinyl acetate, vinyl chloride-vinyl acetate copolymer,
Nylon, using synthetic resins such as acrylic or a mixture thereof, as a foaming agent,
Among the same foaming agents used for the heat-foamable ink constituting the heat-foamable pattern described later, the softening point of the synthetic resin used, the foaming temperature, or the foaming inhibitor used for the composition constituting the foam-suppressing pattern Is selected in consideration of the combination of the above, and further, a plasticizer, a stabilizer, a coloring agent, a foaming accelerator, a lubricant, and the like are appropriately kneaded to form a composition. The foamed resin pattern (4) that reacts to the foaming suppressing ink, the resin pattern (5) that does not react to the foaming suppressing ink, the foaming suppressing resin pattern (9), and the convex foaming resin pattern (10) are inks using an appropriate vehicle. It is formed using a heat-foamable ink obtained by mixing a foaming agent into the ink. As the vehicle, ethyl cellulose, ethyl hydroxyethyl cellulose, cellulose acetate brobionate, cellulose derivatives such as cellulose acetate, polystyrene resin, styrene copolymer resin, acryl or methacryl resin alone or copolymer resin, rosin ester resin, polyvinyl acetate resin, Use one or a mixture of two or more of coumarone resin, vinyl toluene resin, vinyl chloride / vinyl acetate copolymer resin, vinyl chloride resin, polyester resin, polyurethane resin, etc., and add a plasticizer, a stabilizer, and a dispersion to these vehicles. Agents, extenders, coloring agents, solvents and diluents as appropriate, and as a foaming agent, inorganic foaming agents such as sodium bicarbonate, ammonium carbonate, sodium boron hydride, and silicon oxyhydride;
An organic blowing agent such as azodicarbonamide, azobisisobutyronitrile, dinitrosopentamethylenetetramine, paratoluenesulfonyl hydrazide, 4,4'-oxybisbenzenesulfonyl hydrazide, etc., is added in an amount of 1 to 100 parts by weight of the vehicle. ~ 1
Preferably, 2 to 8 parts by weight are added and kneaded to prepare a heat-foamable ink. The heat-foamable pattern made of the heat-foamable ink is heat-foamed or forms a pattern without foaming. Since the pattern portion foams and protrudes, it is not necessary to increase the amount of particular transfer as a printing condition. At this time, the selection of the foaming agent is appropriately selected in consideration of a combination with the compound having a foam suppressing function (foaming inhibitor) used in the foam suppressing ink (8). Further, the coating film of the foamed resin pattern preferably has a thickness of 70 to 300 μm. If it is less than this, the feeling of swelling will be lacking, and if it is more than this, the pattern will flow or it will come out with the same drawbacks as in conventional stencil printing. That is, the foamable resin composition for forming the foamed resin pattern (4) which reacts with the foaming suppressing ink includes a compound having a foaming suppressing function (foaming suppressing agent) contained in the foaming suppressing ink. Is selected. In addition, the foamable resin composition for forming the foamed resin pattern (5) that does not react with the foaming suppression ink includes a foaming resin composition that does not react with the foaming suppression agent contained in the foaming suppression ink, even on the surface of the ink. A blowing agent that causes foaming is selected. Specifically, using trimellitic anhydride to suppress foaming, and using each foaming agent of azodicarbonamide and oxybisbenzenesulfonyl hydrazide in the foaming ink, foaming ink containing azodicarbonamide, Does not foam on the foam suppressing ink pattern. On the other hand, the foaming ink containing oxybisbenzenesulfonyl hydrazide foams on the foam suppressing ink pattern. Next, regarding the foam suppressing ink (8), the foam suppressing ink (8) is a composition containing a compound that prevents decomposition of the foaming agent or prevents the action of the foaming accelerator that promotes foaming of the foaming agent. It can be formed using. Examples of such compounds, namely, foam inhibitors, include organic acids such as maleic acid, fumaric acid, adipic acid, and 1,2-phthalic acid, particularly those containing at least two carboxyl groups and one hydroxyl group and having 2 to 12 carbon atoms. Organic acids: organic acid halides having 2 to 20 carbon atoms, especially acid chlorides: 2 carbon atoms
Organic acid anhydrides of up to 20: polyhydric aromatic alcohols and ketones having 2 to 20 carbon atoms having 2 functional groups: from saturated amines having 3 to 12 carbon atoms or unsaturated 6 to 10-membered ring amines Depending on the application, for example, a foaming agent used for a heat-foamable material, a foaming aid, a material having an effect of raising the foaming temperature in combination with a stabilizer is selected and used, and further, a coloring agent, a plasticizer, a stabilizer, and the like are used. It is an ink that is appropriately added and kneaded. A foaming suppression pattern is printed using the ink, and the foaming suppression pattern portion is concave and concave in shape because heating and foaming are suppressed. The selection of the foaming inhibitor contained in the ink (8) must be performed in consideration of the combination with the foaming agent and the like, similarly to the above-mentioned selection of the foaming agent. It goes without saying that a foaming agent whose foaming is suppressed by the foaming suppressing ink (8) is used in the foamed resin layer formed on the base material (1). Usually, the ink (7) is applied to provide a pattern as required. This may be provided in synchronization with the foam suppression pattern (3), or may be provided as a base pattern or an overcoat pattern.
Among these patterns, an ink layer having solid printing on the entire surface, being colorless and transparent, and having only appropriate gloss is also included. Next, specific examples of the decorative board of the present invention will be described. Substrate Kojin WK-70NRD Composition of foamed resin layer Vinyl chloride G-121 (manufactured by Zeon Corporation) 100 parts by weight Filler Whiton-H (manufactured by Shiraishi Industry Co., Ltd.) 30 顔 Face R-820 (Ishihara Sangyo Co., Ltd.) 10) Foaming agent AZS (Otsuka Chemical Co., Ltd.) 3 〃 Azodicarbonamide plasticizer DOP 70 〃 Kicker ZnO 1 〃 Stabilizer KF-838 (Kyodo Yakuhin) 1 発 泡 Foaming suppression ink CEX (Morosei Ink Co., Ltd.) ) Normal ink containing trimellitic anhydride NWP (manufactured by Showa Ink) Foaming ink-1 NSFT Kai (manufactured by Showa Ink) Foaming ink containing azodicarbonamide blowing agent-2 NSFTN ・ 8 (manufactured by Showa Ink) Foaming agent oxy Bisbenzenesulfonyl hydrazide content Using the above materials, first coat a foamed resin layer material with sufficient viscosity after adjusting the viscosity to a thickness of 180 μm, and then heat it at 160 ° C for 60 seconds to obtain semi-gel. Become Next, the above four types of inks were printed on this surface, and 15
Heat at 0 ° C for about 20 seconds to dry. After printing the finished web at 210 ° C, 60
The cosmetic material of the present invention was obtained by foaming by heating for 2 seconds. [Effects of the Invention] The present invention eliminates the drawbacks of the conventional method of producing a decorative material having a concavo-convex pattern, and allows a multi-tone pattern of concavo-convex to be stably expressed without a change over time, and the pattern is more clear. It is a cosmetic material such as flooring and wallpaper with excellent appearance, which can form a rugged pattern with a delicate interest.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing a structure of a decorative material according to an embodiment of the present invention, and FIG. 2 shows a structure of a conventionally known decorative material. Reference numerals 1, 11: Base material 2, 12: Foaming resin layer 3, 13: Foaming suppressing pattern 4: Foaming resin pattern reacting to foaming inhibitor 5: Foaming resin pattern not reacting to foaming inhibitor 6: Surface protective layer 7: Normal Ink pattern 8, 18: Foam control ink 9: Foam control resin pattern 10: Convex foam resin pattern A: Cosmetic material

Claims (1)

Claims: 1. A foamed resin layer (2) is formed on a substrate (1), and said foamed resin layer (2) is
) Has a convex foamed resin pattern (4) (5) protruding from the surface of the foamed resin (2) and a depressed concave foaming suppressing pattern (3), and on the foaming suppressing pattern (3) , The foam
1 comprising a foamed resin that reacts with the foam suppressing ink (8) constituting the suppressing pattern (3)
A cosmetic material having both a resin pattern (9) in which foaming of more than one color is suppressed and a convex foamed resin pattern (10) of one or more colors made of a foaming resin that does not react with the foaming suppressing ink (8).
The foam-suppressing ink (8) contains trimellitic anhydride as a foam-suppressing agent, and the foaming resin reacting with the foam-suppressing ink (8) is azodicarboxylic acid as a foaming agent.
A foaming resin containing an amide and not reacting with the foaming suppressing ink (8) may be used as a foaming agent.
A cosmetic material comprising nzensulfonyl hydrazide . 2. An ink pattern (7) on a surface of a foamed resin layer (2).
The cosmetic material described. 3. The decorative material according to claim 1, further comprising a transparent surface protective layer (6) on the outer surface opposite to the outer surface of the decorative material on the side of the substrate (1).