JP2004306491A - Metallic gloss tone decorative sheet and decorative material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decorative sheet which is decorated simultaneously with injection molding by folding processing, drawing processing, lapping, vacuum forming, vacuum pressure, in-mold molding, etc., and a decorative material. <P>SOLUTION: In the metallic gloss tone decorative sheet, (1) in a decorative sheet composed of a metallic gloss tone thermoplastic resin substrate 2, a pattern layer 4, and a transparent or translucent thermoplastic resin 5, the resin 5 is a methyl methacrylate resin. Moreover, (2) 0.5-20 pts.wt of a bright pigment comprising a mica pigment, metal powder, and the mixture of them in relation to 100 pts.wt .of the transparent thermoplastic resin is kneaded with the transparent thermoplastic resin 5. (3) As a material developing the metallic gloss of the substrate 2, an inorganic pigment of mica, metal powder, etc., is used. (4) Mica and/or metal powder are used in the pigment of ink used in the pattern layer 4. (5) A surface protecting layer 6 is formed in the transparent thermoplastic resin 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a decorative sheet for use in interior materials such as building materials, fittings, furniture and fixtures, exteriors of household equipment and home appliances, furniture such as TV stands, and interior and exterior of vehicles such as automobiles. More specifically, the present invention relates to a decorative sheet and a decorative material which are simultaneously decorated and decorated by injection molding such as bending and stretching, wrapping, vacuum forming, vacuum pressurization, and in-mold forming for the above members.
[0002]
Furthermore, by preparing the sheet material of each layer, the material is made in consideration of not only landfill incineration but also recycling of broken materials and used members.
[0003]
[Prior art]
Conventional (lower and upper from left),
There is a thermoplastic resin layer (vinyl chloride resin: hereinafter PVC) / metal layer / adhesive / biaxially stretched polyethylene terephthalate resin (hereinafter PET) / adhesive / hot fluororesin layer (Patent Document 1), so that a metallic design can be obtained. However, since the decorative sheet was not stretched due to the presence of the PET layer, the deep drawing and the three-dimensional shape irregularity followability were not good.
[0004]
There were high-crystal PP / soft-PP / high-crystal PP / pattern / adhesive / transparent acrylic resin (Patent Document 2), but a metallic design could not be obtained.
[0005]
Although there was a sheet for in-mold molding comprising an ABS resin backer layer (0.1 mm) / ABS sheet layer / picture layer / transparent acrylic resin sheet layer (Patent Document 3), a metal-like design could not be obtained.
[0006]
Although there was an amorphous crystalline polyester resin / amorphous polyester resin base sheet (PET-G) / acrylic resin (Patent Document 4), a metallic design could not be obtained.
[0007]
Although a thermoplastic resin (ABS) layer / metallic ink / acrylic resin layer (Patent Document 5) was used for in-mold molding for automobiles, when the sheet was stretched, the ink layer could be cracked.
[0008]
[Patent Document 1]
JP-A-7-251632 [Patent Document 2]
Japanese Patent Application Laid-Open No. 2000-225672 [Patent Document 3]
JP 2001-334609 [Patent Document 4]
JP 2002-337295 A [Patent Document 5]
JP-A-2002-46230
[Problems to be solved by the invention]
The present invention relates to a decorative sheet and a decorative material simultaneously decorated by injection molding such as bending and stretching, wrapping, vacuum forming, vacuum pressurization, and in-mold forming.
[0010]
[Means for Solving the Problems]
A decorative sheet comprising a metallic glossy thermoplastic resin substrate, a picture layer, and a transparent or translucent thermoplastic resin, wherein the transparent or translucent thermoplastic resin is a methyl methacrylate resin. Sheet.
[0011]
A metallic luster characterized in that a glitter pigment comprising a mica pigment, a metal powder, and a mixture thereof is mixed with a transparent thermoplastic resin in an amount of 0.5 to 20 parts by weight based on 100 parts by weight of the transparent thermoplastic resin. Makeup sheet.
[0012]
Metallic glossy decorative sheet characterized by using an inorganic pigment such as mica or metal powder as a material that expresses metallic gloss of a thermoplastic resin base material.
[0013]
A metallic glossy decorative sheet characterized by using mica and / or metal powder as the pigment of the ink used for the picture layer.
[0014]
A metallic glossy decorative sheet characterized in that a surface protective layer is provided on a transparent thermoplastic resin.
[0015]
A metallic glossy decorative sheet characterized in that a backer layer of the same resin as the metallic glossy thermoplastic resin substrate is provided on the back side of the metallic glossy thermoplastic resin substrate.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
The metallic glossy thermoplastic resin substrate 2 is made of a known copolyester resin, amorphous crystalline polyethylene terephthalate resin, crystalline polyethylene terephthalate resin, polypropylene resin, polyethylene resin, methyl methacrylate resin, polymethyl methacrylate resin. And acrylonitrile-butadiene-styrene copolymer resin (hereinafter referred to as ABS resin) to which a known coloring pigment, a heat stabilizer, a light stabilizer and the like are added.
[0017]
The adhesive layer 3 may be a two-component urethane resin-based adhesive such as a polyester polyol-based material coated with a 5 μm to 10 μm thick after drying. It may not be used depending on the resin system of the base material and the ink binder resin of the picture layer.
[0018]
The picture layer 4 can be made of a known gravure ink such as a urethane resin or vinyl chloride resin. As the pigment, organic pigments, inorganic pigments, mica, gold powder, silver powder, aluminum powder, and scale-like aluminum powder can be used. It is desirable not to use toluene as the solvent. When the base material is an ABS resin, the surface may not be mirror-finished due to residual solvent when laminated with a transparent acrylic resin. Therefore, a method of first printing on a corona-treated PET film and then transferring it to the ABS base material is used. Is desirable.
[0019]
The transparent or translucent methyl methacrylate resin 5 can be used by adding known aluminum powder, flaky aluminum, stainless steel powder, brass powder, indium powder, gold powder, silver powder, pearl, mica, or a mixture thereof. The thickness of the substrate is preferably from 0.045 mm to 0.200 mm, but in the case of the in-mold molding method, it is particularly preferably from 0.090 mm to 0.160 mm. The metal powder is contained in an amount of 0.5 to 20 parts by weight based on 100 parts by weight of the resin. You may add an ultraviolet absorber, a light stabilizer, and a heat stabilizer. A thickness of 0.050 mm to 0.100 mm is suitable for vacuum formability.
[0020]
When the surface protective layer 6 is applied, a two-component urethane resin to which a known ultraviolet absorber, a light stabilizer or the like has been added may be applied at a coating amount of 6 g / m ² after drying, or an organopolysiloxy group may be added to the side chain of the acrylic urethane resin. After drying, the silicone-modified acrylic urethane resin into which is introduced is applied at a coating amount of 5 to 15 g / m ² and dried.
[0021]
When performing in-mold molding,
In the case of vacuum forming or the like, the back surface is coated with an easy-adhesion layer 1 obtained by adding silica or the like to a two-component urethane resin having a weight of 0.9 to 1.5 g / m ² after drying. A metal-like three-dimensional molded decorative sheet was obtained.
[0022]
【Example】
Example 1
8 parts by weight of aluminum powder was added to 100 parts by weight of the copolymerized polyester resin and kneaded, and a flake-like aluminum powder was added to a 0.100 mm-thick metal-based polyester resin base material 2 of an acrylic resin and a vinyl chloride acetate resin binder. A 0.100 mm thick transparent methyl methacrylate resin (Sandulen 009NCT Kanegafuchi Chemical Industry Co., Ltd.) and a backer layer 7 having a thickness of 0.100 mm were formed on a 0.100 mm thick metal-like thermoplastic substrate 2 on which a hairline pattern was printed with ink. A 100 mm colored copolyester resin was heated and pressed at 200 ° C. to obtain a metallic glossy decorative sheet.
[0023]
Example 2
The same metallic glossy decorative sheet as in Example 1 except that 100 parts by weight of the transparent methyl methacrylate resin of Example 1 was kneaded with 2 parts by weight of a pearl pigment (ME100 manufactured by Nippon Koken Co., Ltd.).
[0024]
Example 3
On the surface of the transparent methyl methacrylate resin containing pearl pigment of Example 2, a surface protective layer 6 (weight average molecular weight of about 25,000, 100 parts by weight of an acrylic polyol having an average number of hydroxyl groups per molecule of about 25, and a weight average molecular weight of about 500 g of polydimethylsiloxane propylene and 10 parts by weight of a hexamethylene diisocyanate-based curing agent), a weight of 12 g / m ² after drying, coating, and drying. Metallic glossy decorative sheet.
[0025]
Example 4
The same metallic glossy decorative sheet as in Example 2 except that the resin system of the metallic glossy thermoplastic resin base material and the backer layer 7 of Example 2 was ABS resin.
[0026]
Example 5
The present invention is performed by applying a liquid adhesive layer obtained by adding silica or the like to a two-liquid urethane resin having a weight of 0.9 to 1.5 g / m ² after drying on the back surface without laminating the backer layer 7 of Example 2. To obtain a metallic glossy decorative sheet.
[0027]
Example 6
The resin system of the backer layer 7 of Example 2 was made of a polypropylene resin, and a metallic glossy decorative material was produced by in-mold molding while extruding the polypropylene resin at 230 ° C.
[0028]
Comparative Example 1
The same metallic glossy decorative sheet as in Example 1 except that 700 nm of aluminum was deposited instead of the printing layer of Example 1.
[0029]
Performance Evaluation 1) Vacuum Forming The above-mentioned metal-shaped three-dimensionally formed decorative sheet was spray-coated with a urethane-modified vinyl resin aqueous adhesive CVC555: crosslinking agent V = 100: 5 (manufactured by Konishi Co., Ltd.) at 60 g / m ² (WET) and sprayed on all sides. As a result of evaluation of the appearance performance of a decorative board obtained by vacuum forming a medium-density fiberboard having a curvature radius of 5R and a thickness of 25 mm at a sheet temperature of 120 ° C., there was no crack in the metallic glossy layer except for Comparative Example 1, but Comparative Example 1 was good. In the figure, the deposited layer was cracked.
[0030]
Performance Evaluation 2) In-Mold Molding Insert the metallic glossy decorative sheet 1 between the female mold 8 and the male mold 9 of the injection molding mold with the backer layer 7 facing the male mold, and vacuum mold or the like as necessary. After the resin was brought into close contact with the female mold 8, the molten resin was injected from the male mold 9 to produce a metal-like decorative member. In Example 1, the deposited layer was cracked.
[0031]
Evaluation condition of metallic glossiness The superiority or inferiority of metallic feeling is determined by using a spectrophotometer X-Rite MA68II to reflect 45 ° with a C light source, and from specular reflection at 15 °, 25 °, 45 °, 75 °, and 110 °. And the color difference may be measured based on the presence or absence of specular reflection. In particular, when it is desired to know the metallic gloss rather than the surface gloss, the measurement may be performed without regular reflection.
[0032]
【The invention's effect】
1) The metallic layer can be maintained in a metallic luster without breaking even if it is three-dimensionally molded.
2) Metallic glossy decorative sheet that can be three-dimensionally formed by vacuum forming.
3) A metallic glossy decorative sheet that can be in-mold molded.
[Brief description of the drawings]
FIG. 1 is a metallic glossy decorative sheet of the present invention. FIG. 2 is an in-mold molding diagram of a metallic glossy decorative sheet of the present invention.
DESCRIPTION OF SYMBOLS 1 ... Metallic glossy decorative sheet 2 ... Metallic glossy thermoplastic resin base material 3 ... Picture layer 4 ... Adhesive layer 5 ... Transparent methyl methacrylate resin containing glitter pigment 6 ... Surface protective layer 7 ... Backer layer 8 ... Concave mold 9 ... Convex type 10 ... Metallic glossy decorative material

Claims (8)

A decorative sheet comprising a metallic glossy thermoplastic resin substrate, a picture layer, and a transparent or translucent thermoplastic resin, wherein the transparent or translucent thermoplastic resin is a methyl methacrylate resin. Sheet. The transparent thermoplastic resin according to claim 1, wherein a glitter pigment comprising a mica pigment, a metal powder, and a mixture thereof is kneaded from 0.5 to 20 parts by weight based on 100 parts by weight of the transparent thermoplastic resin. Metallic glossy decorative sheet. A metallic glossy decorative sheet characterized by using an inorganic pigment such as mica or metal powder as a material exhibiting metallic gloss of the metallic glossy thermoplastic resin substrate according to claim 1. A metallic glossy decorative sheet, wherein mica and / or metal powder is used as a pigment of the ink used in the picture layer according to claim 1. 5. A metallic glossy decorative sheet comprising the transparent thermoplastic resin according to claim 1 and 4 provided with a surface protective layer. A metallic glossy decorative sheet comprising a backer layer of the same resin as the metallic glossy thermoplastic resin on the back side of the metallic glossy thermoplastic resin substrate according to claim 1. A three-dimensionally formed metallic glossy decorative material using the metallic glossy decorative sheet according to claim 1. A metallic glossy decorative material which is simultaneously decorated by injection molding with a thermoplastic resin using the metallic decorative sheet according to claim 6 by in-mold molding.

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