JP2015199314A - Brilliant decorative sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brilliant decorative sheet which allows stable production of a whole-surface totally brilliant pigment layer by restricting the grain size and the amount of coating at the same time, does not glare excessively and has stable glossy and depth feelings without whitishness of a brilliant pigment.SOLUTION: A decorative sheet has a substrate, a first whole-surface totally colored layer, a whole-surface totally brilliant pigment layer and a second whole-surface totally colored layer, in this order, and the amount of coating of the second whole-surface totally colored layer after drying is 0.5-2 g/m.

Description

  The present invention relates to a member for kitchen, a sheet for laminating steel sheets, an architectural interior material, an exterior material, a sheet for wrapping to an aluminum base material, a lamination to a wooden base material, wrapping, and a glittering decorative sheet used for vacuum forming. .

  Conventionally, it has been practiced to print a pattern with a glittering pigment so as to provide glitter on a thermoplastic resin substrate, thin paper, titanium paper or impregnated paper. However, since the solid printing with the glitter pigment is not stable in coating and coating, unevenness, streaks, omission (due to irregularities such as scratches on the impression roll) and the like are likely to occur. In addition, the entire solid glitter pigment layer was too glaring, and the whitishness of the glitter pigment often occurred.

  Although raw materials as glitter pigments have been studied and application and coating methods have been studied, sufficient stability has not been achieved.

Japanese Patent No. 2632314 Japanese Patent No. 3241142 Japanese Patent No. 3,835,577 JP 2004-167702 A JP 2009-078394 A

The present invention has been made in order to solve this problem, and the object of the present invention is to provide a substrate, a first whole solid colored layer, a whole solid glitter pigment layer, a second whole solid, from at least the lower side. It is a decorative sheet having a colored layer in this order, and the coating amount after drying of the second whole surface solid colored layer is 0.5 to ² g / m ² to provide streaks, unevenness, omission, etc. It is an object of the present invention to provide a glittering decorative sheet capable of providing a stable glossy feeling and a feeling of depth, in which the entire solid glittering pigment layer is not too bright and the whitishness of the glittering pigment does not occur.

The present invention solves this problem, that is, the invention according to claim 1 comprises a substrate, a first whole surface solid colored layer, a whole surface solid glitter pigment layer, a second whole surface solid colored layer, at least from the lower side, In this order, the decorative sheet has a coating amount of 0.5 to ² g / m ² after drying of the second whole-surface solid colored layer.

  The invention according to claim 2 is characterized in that the base material is a polyolefin resin or a polyester resin, and has an adhesive layer and a transparent thermoplastic resin layer at least from the lower side on the decorative sheet. The glittering decorative sheet according to claim 1.

  According to the invention of claim 1, by simultaneously limiting the particle size and the coating amount, it becomes possible to stably produce the entire solid glitter pigment layer, which is too glare and the whitish of the glitter pigment. It has become possible to provide a glittering decorative sheet having a stable gloss and depth that does not occur.

  Further, according to the invention described in claim 2, there is a depth and a stereoscopic effect. Furthermore, it becomes possible to provide a glittering decorative sheet that has a more stable color tone, and is limited by some glitter pigments and has a glitter property of any color that is not limited to some color tone. It was.

It is explanatory drawing which shows the structure of the cross section of one Example of the glittering decorative sheet of this invention. It is explanatory drawing which shows the structure of the cross section of one Example of the glittering decorative sheet of this invention. It is explanatory drawing which shows the structure of the cross section of one Example of the glittering decorative sheet of this invention. It is explanatory drawing which shows the structure of the cross section of one Example of the glittering decorative sheet of this invention.

  Hereinafter, the glittering decorative sheet of the present invention will be described in detail with reference to the drawings. 1 to 4 show a cross-sectional structure of an embodiment of the glittering decorative sheet of the present invention. From the base material 1, the third whole surface solid colored layer 5, the first whole surface solid colored layer 2, the whole surface solid glitter pigment layer 3, the second whole surface solid colored layer 4, the adhesive layer 6, the transparent thermoplastic resin layer 7, and the like. Thus, a primer layer (not shown in the figure) may be provided on the back surface of the base material 1 so that the glittering decorative sheet is preferably bonded.

  As a thing used for the base material 1 in the glittering decorative sheet of this invention, the thing similar to what was used for the conventional general glittering decorative sheet can be used fundamentally. Thin paper, titanium paper, and impregnated paper may be used as the paper substrate. Examples of the resin include polyolefin resins such as polyethylene, polypropylene, polymethylpentene, polybutene, ethylene-propylene copolymer, ethylene-α-olefin copolymer, propylene-α-olefin copolymer, and ethylene-vinyl acetate copolymer. Olefin copolymer resins such as polymers, ethylene-vinyl alcohol copolymers, ethylene- (meth) acrylic acid (ester) copolymers, ethylene-unsaturated carboxylic acid copolymer metal neutralized products (ionomers), etc. Polyolefin resin, polyethylene terephthalate, polybutylene terephthalate, polytetramethylene terephthalate, polyethylene naphthalate, polyethylene terephthalate-isophthalate copolymer, 1,4-cyclohexanedimethanol copolymer polyethylene terephthalate Rate, polyarylate, polyester resins such as polycarbonate, poly (meth) acrylonitrile, polymethyl (meth) acrylate, polyethyl (meth) acrylate, polybutyl (meth) acrylate, acrylic resins such as polyacrylamide, 6-nylon, 6, Polyamide resins such as 6-nylon, 6,10-nylon, styrene resins such as polystyrene, AS resin, ABS resin, vinyl resins such as polyvinyl chloride, polyvinyl acetate, polyvinyl alcohol, polyvinyl acetal, polyvinyl butyral, Fluorine resins such as polyvinyl fluoride, polyvinylidene fluoride, polytetrafluoroethylene, ethylene-tetrafluoroethylene copolymer, ethylene-perfluoroalkyl vinyl ether copolymer, etc., or two or more thereof Mixtures, copolymers, can be used complex, a laminate or the like.

  Among the above-mentioned various thermoplastic resins, in view of the increasing social interest in environmental problems in recent years, it is not desirable to use a resin containing chlorine (halogen) such as polyvinyl chloride resin. It is desirable to employ a halogen-based thermoplastic resin. Among these, from the viewpoints of various physical properties, processability, versatility, economy, etc., it is most desirable to use polyolefin resin or polyester resin (amorphous or biaxial stretching). Of these, polyolefin resins have been pointed out to be conspicuously poor in machinability, although they have been adopted as glittering decorative sheet materials that replace polyvinyl chloride resins. It is a material that can remarkably improve the machinability and exhibits the effect of the present invention most remarkably.

  As the above-mentioned polyolefin resin, many types are known as already listed, and it may be used by appropriately selecting from them according to the purpose of use of the glittering decorative sheet. The most suitable for typical use is a polypropylene resin, that is, a propylene-based single or copolymer, specifically, for example, a homopolypropylene resin, a random polypropylene resin, a block polypropylene resin, etc. In addition, a resin or the like in which atactic polypropylene is appropriately blended with them can be used. Further, it may be a copolymer containing an olefin monomer other than propylene, for example, an α-olefin having a polypropylene crystal part and having 2 to 20 carbon atoms other than propylene, preferably ethylene, butene- Examples thereof include a propylene-α-olefin copolymer containing 15 mol% or more of one or more comonomers of 1,4-methylpentene-1, hexene-1 or octene-1. In addition, low density polyethylene, ethylene-α-olefin copolymer, ethylene-propylene copolymer rubber, ethylene-propylene-nonconjugated diene copolymer rubber, styrene-butadiene copolymer, which are usually used for softening polypropylene resins. A modifier such as a coalescence or a hydrogenated product thereof can be appropriately added.

  For the substrate 1, for example, a colorant, a filler (silica, talc, titanium oxide, barium sulfate, etc.), an ultraviolet absorber, a light stabilizer, a heat stabilizer, an antioxidant, an antistatic agent, a lubricant (as necessary) 1 type or more chosen from various additives, such as a stearic acid, a metal soap, a flame retardant, an antibacterial agent, an antifungal agent, an anti-friction agent, a light scattering agent, and a gloss adjusting agent, may be added. In addition, the base material 1 is often used in order to conceal the color variation or defects on the surface of the substrate or the like to which the glittering decorative sheet is attached, but the substrate 1 is opaquely colored. In order to make use of the surface texture, a transparent or translucent material may be used.

The 1st whole surface solid colored layer 2, the 2nd whole surface solid colored layer 4, and the 3rd whole surface solid colored layer 5 are provided as needed, in order to provide the designability by a picture to the glittering decorative sheet of the present invention. However, it can be omitted if the base material 1 itself can be colored. The first whole surface solid colored layer 2 is formed by using, for example, a gravure printing method or a printing ink or paint obtained by dissolving or dispersing a colorant such as a dye or a pigment in a suitable diluent solvent together with a suitable binder resin. It is generally formed by various printing methods such as an offset printing method and various coating methods such as a gravure coating method or a roll coating method. As the binder resin, for example, urethane resin, acrylic resin, vinyl chloroacetate resin, polyimide resin, nitrified cotton, or a mixture thereof is often used, but it is not limited thereto. The type of the pattern is arbitrary as desired, for example, a wood grain pattern, a stone pattern, a cloth pattern, an abstract pattern, a geometric pattern, a character or a symbol, a combination thereof, etc., and may be a solid color. In addition, in order to improve the concealing property of the glittering decorative sheet, a concealing layer made of an opaque printing ink or paint containing a large amount of opaque pigments such as titanium dioxide and iron oxide is provided on the back side of the first full-colored colored layer 2. Sometimes it is done. In particular, the second whole surface solid colored layer 4 is 0.5 to 2 g / in coating amount after drying so that the whole surface solid glitter pigment layer 3 is not too bright and the whitish of the glitter pigment does not occur. m ² is desirable.

As the bright pigment used for the entire solid bright pigment layer 3, a pearl pigment in which natural mica is coated with a metal oxide such as titanium oxide or iron oxide can be suitably used, and other metal powders such as aluminum powder can also be used. It can be used. A particle size of 1 to 40 μm is used, preferably 5 to 30 μm, and particularly an average particle size of 30 μm with a small variation in particle size is optimal. If it is smaller than 1 μm, sufficient glitter is not expressed, and if it is larger than 40 μm, defects such as unevenness and streaks tend to occur.
As a printing method, gravure printing, microgravure printing, finisher roll printing, offset printing, ink jet printing, silk screen printing, and the like can be performed. The layer thickness is provided so as to be 1 to 3 g / ^{m 2} of the coating amount after drying, in particular at best 2 g / ^{m 2.} When it is thinner than 1 g / m ² , sufficient glitter is not expressed, and when it is thicker than 3 g / m ² , defects such as omission tend to occur.

  The adhesive layer 6 is provided as necessary in order to bond the base material 1 and the transparent thermoplastic resin layer 7, and may be omitted when the adhesiveness of other layers can be used. It is. Although there is no restriction | limiting in particular in the kind of adhesive agent used for the adhesive bond layer 6, It is most desirable to use the 2 liquid curing type urethane adhesive which uses an isocyanate type hardening | curing agent. Specifically, for example, polyester polyol or polyether polyol can be used as the main agent, and tolylene diisocyanate, diphenylmethane diisocyanate, xylylene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, or the like can be used as the curing agent.

The adhesive layer 6 is disposed on the second whole surface solid colored layer 4, which is a normal manufacturing procedure, that is, the first whole surface solid colored layer 2, the whole surface solid glitter pigment layer 3, and after drying. Assuming a manufacturing procedure in which a decorative sheet having the second whole surface solid colored layer 4 in this order is formed in a coating amount of 0.5 to ² g / m ² and then laminated with the transparent thermoplastic resin layer 7 via the adhesive layer 6 However, it is not limited to this arrangement. That is, the manufacturing procedure is arbitrary. For example, the third whole surface solid colored layer 5 is formed on the lower surface of the first whole surface solid colored layer 2, and this is laminated on the base material 1 via the adhesive layer 6. It is also possible to use a manufacturing procedure.

  The primer layer (no instruction in the figure) is applied as necessary in order to improve the adhesion with the adhesive used for bonding to the substrate to which the glittering decorative sheet of the present invention is bonded. . As an adhesive to the most common wood substrate as a substrate, for example, an adhesive such as a vinyl acetate emulsion type or a two-component curable urethane type is widely used. Therefore, the primer layer is adapted to these general-purpose adhesives. It is desirable to have a resin design. Specifically, for example, urethane-based, acrylic-based, ethylene-vinyl acetate copolymer, vinyl chloride-vinyl acetate copolymer system, polyester-based, and the like can be mentioned. Among them, two liquids by blending polyester polyol and isocyanate compound A curable urethane primer is effective. Further, for example, addition of inorganic powder such as silica, barium sulfate, calcium carbonate, etc. is effective for preventing blocking during winding and storage, and improving adhesive force due to anchoring effect.

A colored homopolypropylene resin sheet having a thickness of 70 μm produced by an extrusion method was used as the substrate 1, and gravure printing was performed on the surface using a two-component urethane resin ink as the first full-color solid colored layer 2. The weight after drying was 1.9 g / m ² , 0.7% by weight of organic pigment, and 99.3% by weight of urethane resin.

Further, on this surface, 35.6% by weight of a two-part urethane resin medium, 5.0% by weight of an aliphatic isocyanate curing agent, and 59.3% of a bright pigment (average particle size 30 μm) as a solid solid glitter pigment layer 3 were obtained. With a solid plate of 150 lines (150 lines per 25.4 mm) prepared by a heliograssation method with a plate depth of 38 to 39 μm using an ink added with a% addition, the coating amount after drying is 1.8 g / m ² Printed on.

Next, gravure printing was performed using a two-component urethane resin ink as the second whole surface solid colored layer 4. The weight after drying was 0.5 g / m ² , 0.7% by weight of organic pigment, and 99.3% by weight of urethane resin.

Further, a transparent biaxially stretched film having a thickness of 100 μm as the transparent thermoplastic resin layer 7 is formed on the surface of the transparent thermoplastic resin layer 7 through a two-component curable polyester urethane adhesive as the adhesive layer 6 (the coating amount after drying is 5.5 g / m 2). A polyester resin sheet (140 g / m ² ) was dry laminated to obtain a glittering decorative sheet of the present invention. The appearance of the resulting glittering decorative sheet had a stable glitter on the entire surface of the sheet, and was free from streaks, unevenness and omission.

<Comparative Example 1>
A glittering decorative sheet was obtained in the same manner as in Example 1 except that the second whole surface solid colored layer 4 was applied such that the coating amount after drying was 4 g / m ² . The resulting glittering decorative sheet had poor glitter and was not good in appearance.

<Comparative Example 2>
A glittering decorative sheet was obtained in the same manner as in Example 1 except that the second whole surface solid colored layer 4 was applied such that the coating amount after drying was 0.1 g / m ² . The resulting glittering decorative sheet was too bright and glaring, became whitish and poor in appearance.

  The glittering decorative sheet of the present invention can be used for kitchen components, steel sheet laminating sheets, architectural interior materials, exterior materials, wrapping sheets for aluminum base materials, lamination to wooden base materials, wrapping, and vacuum forming. It is.

DESCRIPTION OF SYMBOLS 1 ... Base material 2 ... 1st whole surface solid colored layer 3 ... Whole surface solid luster pigment layer 4 ... 2nd whole surface solid colored layer 5 ... 3rd whole surface solid colored layer 6 ... Adhesive layer 7 ... transparent thermoplastic resin layer

Claims (2)

A decorative sheet having at least a base material, a first whole surface solid colored layer, a whole surface solid glitter pigment layer, and a second whole surface solid colored layer in this order from the lower side, the coating amount after drying of the second whole surface solid colored layer It is 0.5-2 g / m < ² > by glossiness decorative sheet characterized by the above-mentioned.   2. The glittering decorative sheet according to claim 1, wherein the base material is a polyolefin resin or a polyester resin, and has an adhesive layer and a transparent thermoplastic resin layer at least on the upper side of the decorative sheet from the lower side.