JP6586749B2 - Cosmetic sheet and cosmetic material - Google Patents

Description

  The present invention relates to a decorative sheet used as a building material and a decorative material using the decorative sheet. The decorative sheet and the decorative material of the present invention are suitable for exterior use used outdoors.

A decorative sheet is used for various uses such as indoor and outdoor buildings and furniture and furniture as a building material that is inexpensive and excellent in processability. Among such decorative sheets, an exterior decorative sheet used outdoors is used by being attached to the surface of an exterior decorative steel sheet such as an entrance. The exterior decorative sheet is required to have weather resistance higher than that of the interior decorative sheet.
As decorative sheets having high weather resistance, decorative sheets using olefin-based materials are currently in practical use. The weather resistance is evaluated by actual outdoor exposure and accelerated weather resistance test. The weather resistance of a decorative sheet using an olefin-based material satisfies a practical condition. Such a decorative sheet is described in Patent Document 1, for example.

JP 2012-131112 A

However, the existing exterior decorative sheet was evaluated for weather resistance against ultraviolet light of sunlight, and although it was formulated, weather resistance against infrared light was not considered. In the exterior decorative sheet, heat is stored by absorbing infrared light, and expansion is caused by the stored heat being transmitted to the base material of the decorative sheet. When the base material of the decorative sheet expands, the decorative material to which the decorative sheet is bonded is warped, and the beauty of the building material and the function of protecting the building are deteriorated.
This invention is made | formed in view of such a point, and it aims at providing the decorative sheet and cosmetics which have heat insulation and can prevent the curvature by infrared light.

In order to solve the above problems, the decorative sheet of one embodiment of the present invention is provided with a coating layer on one side of the thermoplastic resin base material layer, the thermoplastic resin base material layer is made of a polyolefin-based resin, The coating layer is made of an acrylic urethane-based resin containing a triazine-based ultraviolet absorber, the thickness of the coating layer is 5 g / m ² or more and 10 g / m ² or less in terms of solid content, and the thermoplastic resin substrate layer And the coating layer, and the printing layer has a solid printing layer and a pattern layer in this order from the thermoplastic resin substrate side, and the solid printing layer contains a pigment. , Isoindolinone, disazo, polyazo, diketopyrrolopyrrole, quinacridone, phthalocyanine, and titanium oxide. In the pattern layer, black is isoindolinone. Charges, characterized in that it is reproduced by mixing the diketopyrrolopyrrole pigments and phthalocyanine pigments.

  According to the present invention, it is possible to provide a decorative sheet and a decorative material that have heat shielding properties and can prevent warping due to infrared light.

It is sectional drawing of the decorative material using the decorative sheet of one Embodiment of this invention, and a decorative sheet.

Hereinafter, a decorative sheet and a decorative material according to an embodiment of the present invention will be described.
(Cosmetic materials)
FIG. 1 is a cross-sectional view for explaining a decorative material 1 of the present embodiment. The decorative material 1 of this embodiment includes a base material 20, a decorative sheet 3 that is bonded to the base material 20, and a first adhesive layer 21 that bonds the base material 20 and the decorative sheet 3.
The decorative material 1 of the present embodiment increases the transmittance of the printing layer 13 with respect to infrared light having a wavelength of 0.7 μm to 1000 μm, and reflects the transmitted infrared light by the thermoplastic resin substrate layer 11. 20 heat storage is prevented.

(Decorative sheet)
The decorative sheet 3 of the present embodiment is obtained by providing a top coat layer 19 as a coating layer on one surface side of the thermoplastic resin base material layer 11. That is, the decorative sheet 3 includes a thermoplastic resin base material layer 11, a printing layer 13, an overlay film layer 15, a second adhesive layer 17, and a topcoat layer 19 that are provided in this order from the first adhesive layer 21 side. Yes.

Hereinafter, each layer of the decorative sheet 3 will be described.
<Thermoplastic resin base material layer>
As the thermoplastic resin base material layer 11, a layer made of a polyolefin resin is used. As the thermoplastic resin base material layer 11, a translucent material, a colored material, or the like can be selected depending on the application. In this embodiment, the thermoplastic resin base material layer 11 is a colored base material.
By using a polyolefin-based resin for the thermoplastic resin base material layer 11, the decorative material 1 does not have a problem even if it is incinerated, unlike a fluorine-based resin. As the polyolefin-based resin, polyethylene, polypropylene, or a modified resin thereof is generally used, but a polypropylene-based resin is preferable in consideration of surface hardness, heat resistance, and the like. There are two types of polypropylene-based resins, random copolymerization and homo-based resins, both of which can be used depending on the application.

  Moreover, you may add a ultraviolet absorber (a benzotriazole type, a triazine type, a benzophenone type etc.) to the thermoplastic resin base material layer 11 as a weather resistance prescription. The addition amount may be added according to the desired weather resistance, but is 0.1% to 10%, preferably 1% to 5%, based on the resin solid content. Among the ultraviolet absorbers, 2- (2-hydroxy-5-tert-butylphenyl) -2H-benzotriazole, 2- (5-methyl-2-hydroxyphenyl) benzotriazole, 2- [ 2-hydroxy-3,5-bis (α, α-dimethylbenzyl) phenyl] -2H-benzotriazole, 2- (3,5-di-t-butyl-2-hydroxyphenyl) benzotriazole, 2- (3 -T-butyl-5-methyl-2-hydroxyphenyl) -5-chlorobenzotriazole, 2- (3,5-di-t-butyl-2-hydroxyphenyl) -5-chlorobenzotriazole, 2- (3 , 5-Di-t-amyl-2-hydroxyphenyl) benzotriazole, 2- (2′-hydroxy-5′-t-octylphenyl) ben Examples thereof include zotriazole and the like, mixtures thereof, modified products, polymers, and derivatives.

  Examples of triazines include 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-[(hexyl) oxy] -phenol, 2- [4-[(2-hydroxy -3-dodecyloxypropyl) oxy] -2-hydroxyphenyl] -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- [4-[(2-hydroxy-3) -Tridecyloxypropyl) oxy] -2-hydroxyphenyl] -4,6-bis (2,4dimethylphenyl) -1,3,5-triazine, 2,4-bis (2,4-dimethylphenyl)- 6- (2-Hydroxy-4-iso-octyloxyphenyl) -s-triazine and the like, a mixture, a modified product, a polymerized product and a derivative thereof can be used. Furthermore, as the benzophenone series, octabenzone, modified products thereof, polymers and derivatives can be used.

  Further, a hindered amine light stabilizer may be added in order to prevent the resin itself from being deteriorated by light, heat, water or the like. The added part may be added according to the desired weather resistance, but is 0.1% to 10%, preferably 1% to 5%, based on the resin solid content. As a hindered amine light stabilizer, bis (1,2,2,6,6-pentamethyl-4-piperidyl) [[3,5-bis (1,1-dimethylethyl) -4-hydroxyphenyl] methyl] Butyl malonate, bis (1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate, methyl (1,2,2,6,6-pentamethyl-4-popperidinyl) sebacate, bis (2) decanedioate , 2,6,6-tetramethyl-1 (octyloxy) -4-piperidinyl) ester, mixtures thereof, modified products, polymers, derivatives, and the like.

The thermoplastic resin base layer 11 can be obtained by appropriately blending the above materials and molding it into a film by an extrusion molding method, an inflation molding method, a calendar molding method, or the like. The thickness of the thermoplastic resin base material layer 11 is suitably about 30 μm to 120 μm in consideration of the ease of adhesive bonding processing, weather resistance, transparency, and the like.
Moreover, in this embodiment, in order to improve the reflectance of the infrared light in the thermoplastic resin base material layer 11, you may add a titanium oxide to the said material and make it contain in the thermoplastic resin base material layer 11. FIG. At this time, in this embodiment, when the thermoplastic resin base material layer 11 contains 23 parts by mass or more of titanium oxide, the heat shielding property is improved.

Moreover, when using a titanium oxide as a hiding layer for the thermoplastic resin base material layer 11, the total of the content of titanium oxide as a hiding layer and the added titanium oxide should just be 23 mass parts or more. Moreover, when the thermoplastic resin base material layer 11 contains 23 mass parts or more of titanium oxide as a concealing layer, it is not necessary to add titanium oxide any more.
However, when the amount of titanium oxide added to the thermoplastic resin substrate layer 11 increases, the titanium oxide affects the film quality of the thermoplastic resin substrate layer 11. For this reason, suitable content of the titanium oxide of the thermoplastic resin base material layer 11 is 23 mass parts or more and 40 mass parts or less.

  In the present embodiment, as shown in FIG. 1, a titanium oxide layer 111 may be provided by applying titanium oxide to the surface of the thermoplastic resin base material layer 11 on the printed layer 13 side. Even when the titanium oxide layer 111 is provided, if the thermoplastic resin base material layer 11 contains 23 parts by mass or more of titanium oxide by the titanium oxide layer 111, the thermoplastic resin base material layer 11 can be applied to the base material 20. Thermal insulation is improved. Under such conditions, the thickness of the titanium oxide layer 111 is preferably 5 μm to 10 μm.

<Print layer>
The printing layer 13 of the present embodiment is provided by gravure printing or the like using an ink using a pigment. The printing layer 13 of this embodiment includes a solid printing layer 131 and a pattern layer 132. The solid print layer 131 is a print layer without a pattern, and the picture layer 132 is a layer for applying an arbitrary pattern to the decorative sheet 3. Examples of the pattern include a wood grain pattern, a stone pattern, a cloth pattern, an abstract pattern, and a geometric pattern. Further, when the design is merely colored or color-adjusted, it may be a solid color. As the pattern of the pattern layer 132, an arbitrary pattern can be adopted according to the use of the decorative sheet 3.

In addition, the solid print layer and the pattern layer 132 may be either a single layer or a laminate of a plurality of layers.
The ink used for the solid print layer 131 and the pattern layer 132 may be any ink that can be printed on the thermoplastic resin base material layer 11. Specifically, the thermoplastic resin base material layer 11 is a random polypropylene resin. If present, a mixture of urethane resin and vinyl chloride = vinyl acetate copolymer resin is preferably used.

  In the present embodiment, a pigment selected from isoindolinone, disazo, polyazo, diketopyrrolopyrrole, quinacridone, phthalocyanine, and titanium oxide is used as a pigment for the solid print layer 131. In addition, when the solid print layer 131 is provided and the pattern layer 132 represents, for example, a wood conduit, a black pigment is not used, but a black color is obtained by mixing isoindolinone, diketopyrrolopyrrole, and phthalocyanine pigment. To reproduce.

With this configuration, the present embodiment obtains a deep design by combining the pattern layer 132 with the solid print layer 131, suppresses color change over time, and makes the reflectance in the infrared region more than a certain level. It is possible to raise.
The inventors of the present invention printed a wood grain pattern on the solid print layer 131 as described above, and measured the total infrared light transmittance of the print layer 13. According to this measurement, the transmittance of light having a wavelength of 0.781 μm to 2.5 μm was 40% or more.

In addition, for the printing layer 13, for example, extender pigments, plasticizers, dispersants, surfactants, tackifiers, adhesion assistants, drying agents, heat stabilizers, weathering stabilizers, curing agents, curing accelerators. Various additives such as an agent or a curing retarder can be appropriately added.
The method for forming the printing layer 13 is not particularly limited, and various known printing methods such as a gravure printing method, an offset printing method, a screen printing method, a flexographic printing method, an electrostatic printing method, and an ink jet printing method are used. be able to. In addition, for example, in the case of a solid surface, in addition to the above-described various printing methods, for example, roll coating method, knife coating method, air knife coating method, die coating method, lip coating method, comma coating method, kiss coating method, flow coating method Various coating methods such as a dip coating method can also be used. In addition, for example, the hand-drawn method, the ink sink method, the photographic method, the laser beam or electron beam drawing method, the partial vapor deposition method of metal or the like, the etching method, etc., or a combination of these methods can of course be performed.
Further, prior to the formation of the printing layer 13, if necessary, the surface of the thermoplastic resin substrate layer 11 is subjected to, for example, corona treatment, ozone treatment, plasma treatment, ionizing radiation treatment, dichromic acid treatment, anchor or primer treatment. By performing the surface treatment, the adhesion between the thermoplastic resin base material layer 11 and the printing layer 13 can be improved.

<Overlay film layer>
For the overlay film layer 15, a resin as a material is selected in consideration of interlayer adhesion with the thermoplastic resin base material layer 11 and the printing layer 13. Specifically, if the thermoplastic resin base material layer 11 is any one of a homopolypropylene resin, a random polypropylene resin, and a polyethylene resin, any of the same homopolypropylene resin, random polypropylene resin, and polyethylene resin is used. Is selected. In addition, it is preferable to add an ultraviolet absorber and a hindered amine light stabilizer to the overlay film layer 15.

  In addition, when the overlay film layer 15 becomes a surface layer without providing the top coat layer 19 as an upper layer, it is preferable to use a polymethylmethacrylic resin as the overlay film layer 15. At this time, it is preferable to add an ultraviolet absorber and a hindered phenol antioxidant to the overlay film layer 15. Further, in consideration of interlayer adhesion with the printing layer 13, the printing layer 13 is attached to the printing layer 13 with an adhesive made of at least one of acrylic resin, polyester resin, vinyl chloride = vinyl acetate copolymer resin. Combined.

The overlay film layer 15 needs to have transparency that allows at least the printing layer 13 below to be transparent, and is most preferably colorless and transparent, but may be colored and transparent or translucent. . As long as this is the case, the overlay film layer 15 may contain a colorant and a filler.
The surface of the overlay film layer 15 can be appropriately provided with an emboss having a desired pattern as necessary. There is no particular limitation on the type of embossed pattern, and for example, it may be various patterns such as wood grain (particularly conduit pattern), stone texture, fabric texture, Japanese paper texture, geometric pattern, etc. It may be a simple matte shape, grain shape, hairline shape, suede tone or the like. Further, the design can be further improved by synchronizing these embossed patterns with the pattern of the printed layer 13, but if not necessary, the pattern of the printed layer 13 may be out of sync. Embossing of a pattern including both a pattern synchronized with and a pattern not synchronized can be provided.

The embossing method is not particularly limited, but a mechanical embossing method using a metal embossing plate is the most common. Moreover, there is no restriction | limiting in particular also in the formation time of embossing, Arbitrary time can be selected from before lamination | stacking with the thermoplastic resin base material layer 11 of the transparent acrylic resin film 5, simultaneous with lamination | stacking, or after lamination | stacking, Further, embossing with the same or different pattern can be performed a plurality of times at a plurality of times selected from the respective times.
The thickness of the overlay film layer 15 is preferably about 50 to 150 μm, more preferably about 70 to 100 μm.
As a method for forming the overlay film layer 15, for example, an extrusion molding method, an inflation molding method, a calendar molding method, a cast molding method, or the like can be used.

<Second adhesive layer>
The second adhesive layer 17 is provided for the purpose of allowing adhesion between the overlay film layer 15 and the top coat layer 19 by a dry laminating method and developing adhesive strength between both layers. Adhesive made of urethane resin with polyester resin as the main chain is adopted. As an adhesive made of a urethane resin, a polyester polyol type and a two-part urethane resin adhesive of hexamethylene diisocyanate, tolylene diisocyanate, and a mixture thereof as a curing agent and coated with a thickness of 2 μm to 10 μm after drying, etc. Can be used.
For the second adhesive layer 17, depending on the intended use of the decorative sheet, for example, an antioxidant, an ultraviolet absorber, a light stabilizer, a heat stabilizer, a plasticizer, a lubricant, an antistatic agent, a flame retardant, One or more conventionally known various additives such as fillers may be added.

<Topcoat layer>
The top coat layer 19 is prepared by adding an ultraviolet absorber and a hindered amine light stabilizer to acrylic polyol as a main resin and hexamethylene diisocyanate as a curing agent. As the ultraviolet absorber, a triazine ultraviolet absorber is used.
Examples of the triazine ultraviolet absorber include 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-[(hexyl) oxy] -phenol, 2- [4-[(2- Hydroxy-3-dodecyloxypropyl) oxy] -2-hydroxyphenyl] -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- [4-[(2-hydroxy- 3-tridecyloxypropyl) oxy] -2-hydroxyphenyl] -4,6-bis (2,4dimethylphenyl) -1,3,5-triazine, 2,4-bis (2,4-dimethylphenyl) -6- (2-hydroxy-4-iso-octyloxyphenyl) -s-triazine and the like, mixtures, modified products, polymers, and derivatives thereof can be used. Furthermore, as the benzophenone series, octabenzone, modified products thereof, polymers and derivatives can be used.
The thickness of the top coat layer 19 is 5 g / m ² or more and 10 g / m ² or less in terms of solid content. More preferably, it is 6-9 g / m < ² >. Thereby, versatility, such as the coating property of the topcoat layer 19 of this embodiment and storage, becomes high.

  In the present embodiment, the coating layer is the topcoat layer 19 that is the uppermost layer of the decorative sheet 3, but the present embodiment is not limited to the topcoat layer 19 being the coating layer. For example, the coating layer below the top coat layer 19 may contain a triazine-based ultraviolet absorber, or another coating layer may be appropriately provided on the coating layer containing the triazine-based ultraviolet absorber.

(Base material)
The base material 20 is used by attaching (laminating) the decorative sheet 3 to the surface. The base material 20 includes various materials such as a metal base material and a wood base material. An example of the metal base material is an Alpolic material. The Alpolic material is an aluminum resin composite plate in which a resin material is sandwiched between metal plates that have been subjected to surface processing such as painting or mirror finishing. As the metal plate, aluminum, galvalume steel plate, stainless steel, titanium or the like is used. As the resin material, polyethylene alone or a material obtained by adding an inorganic material to polyethylene is used.
Moreover, as a wood-type base material, MDF (medium density fiberboard), a plywood, a particle board etc. are used, for example.
For attaching the sheet 3 to the base material 20, for example, an appropriate adhesive such as urethane or vinyl acetate is used.

(First adhesive layer)
As the 1st contact bonding layer 21, if it is a well-known adhesive used for bonding of the decorative sheet for floors and a base material, what kind of thing may be used. In the present embodiment, for example, the first adhesive layer 21 can be formed using a reactive hot-melt adhesive. In particular, the first adhesive layer 21 may be formed using a two-component polyurethane adhesive among reactive hot-melt adhesives. Among such first adhesive layers 21, in the present embodiment, it is particularly preferable to use a member that has been certified non-combustible according to the regulations of the Japan Wallcovering Association.
The first adhesive layer 21 may contain an ultraviolet absorber or a light stabilizer. The thickness of the first adhesive layer 21 is preferably about 5 μm to 50 μm.

  According to this embodiment described above, the color of the isoindolinone pigment, the diketopyrrolopyrrole pigment, and the phthalocyanine pigment is mixed to represent black, so that the light transmittance in the printed layer is higher than that of the existing decorative sheet. Since the infrared light transmitted through the printing layer 13 is reflected by the thermoplastic resin base material layer 11, heat is not transmitted to the base material 20, and heat storage of the base material 20 can be prevented. And by preventing the heat storage of the base material 20, it is possible to obtain a cosmetic material 1 that is less likely to be warped by sunlight even when used outdoors.

In the present embodiment, an acrylic urethane-based resin is used as the topcoat layer 19, a triazine-based ultraviolet absorber having good compatibility with this is used, and the solid content coating amount is 5 g / m ² or more. It is possible to form a coating film that is excellent in ultraviolet shielding power and does not deteriorate with time. Moreover, the coating film without a crack of a surface protective layer can be formed also at the time of the lamination to an uneven | corrugated | grooved part by making solid content application amount into 10 g / m < ² > or less.

The embodiment described above exemplifies a configuration for embodying the technical idea of the present invention, and the technical idea of the present invention is based on the material, shape, structure, arrangement, etc. of the component parts. It is not specific to the above. The technical idea of the present invention can be variously modified within the technical scope defined by the claims described in the claims.
In addition, it should be noted that the drawings in the embodiments are schematic, and the relationship between the thickness and the planar dimensions, the ratio of the thickness of each layer, and the like are different from the actual ones. Therefore, specific thicknesses and dimensions should be determined in consideration of the above description.

Next, examples of the present invention will be described.
[Example 1]
In Example 1, as a thermoplastic resin substrate layer, 3 parts by mass of a hindered phenol antioxidant, 1 part by mass of an ultraviolet absorber, 1 part by mass of a hindered amine light stabilizer, 23 parts by mass of titanium oxide, 100 parts by mass of polypropylene resin. A film having a thickness of 70 μm was formed.

  Next, in Example 1, a solid printing layer was formed on the surface of the colored thermoplastic resin base material layer. The solid printing layer ink is a mixture of urethane resin and vinyl chloride = vinyl acetate copolymer resin in a ratio of 7: 3, and hexamethylene diisocyanate and isophorone diisocyanate as a curing agent in a ratio of 2: 8. 3 parts by mass of the resulting product was added, and 5.3 parts by mass of isoindolinone, 2.4 parts by mass of polyazo, and 1.7 parts by mass of phthalocyanine were added as pigments. The solid print layer is formed by printing such ink on the entire surface of the colored thermoplastic resin base material layer.

  In Example 1, the first layer of the pattern layer was printed on the surface of the solid print layer. The ink for the first layer of the pattern layer is a mixture of urethane resin and vinyl chloride = vinyl acetate copolymer resin in a ratio of 7: 3, and hexamethylene diisocyanate and isophorone diisocyanate as a curing agent in a ratio of 2: 8. It was manufactured by adding 3 parts by mass of a mixture mixed in a proportion, and adding 6.0 parts by mass of polyazo and 3.1 parts by mass of phthalocyanine as pigments. The first layer of the pattern layer is for printing the bark portion of the wood grain pattern.

  Next, in Example 1, the second layer of the pattern layer was printed. The ink of the second layer of the pattern layer is a mixture of urethane resin and vinyl chloride = vinyl acetate copolymer resin in a ratio of 7: 3, and hexamethylene diisocyanate and isophorone diisocyanate as a curing agent in a ratio of 2: 8. It was manufactured by adding 3 parts by weight of the mixture mixed at a ratio and adding 2.4 parts by weight of isoindolinone, 5.2 parts by weight of polyazo, and 2.7 parts by weight of phthalocyanine as pigments. The second layer of the pattern layer is for printing the bark portion of the wood grain pattern.

Next, in Example 1, the third layer of the pattern layer was printed. The ink of the third layer of the pattern layer is a mixture of urethane resin and vinyl chloride = vinyl acetate copolymer resin in a ratio of 7: 3, and 2: 8 of hexamethylene diisocyanate and isophorone diisocyanate as curing agents. It was manufactured by adding 3 parts by mass of the mixture mixed at a ratio and adding 3.2 parts by mass of isoindolinone, 4.9 parts by mass of diketopyrrolopyrrole , and 3.0 parts by mass of phthalocyanine as pigments. The third layer of the pattern layer is to print a wood-patterned conduit portion.

  In Example 1, an overlay film layer was formed on the printed layer. The overlay film layer is formed by melting and extruding a material obtained by adding 0.5 parts by mass of a benzotriazole ultraviolet absorber and 0.3 parts by mass of a hindered amine light stabilizer to 100 parts by mass of a random polypropylene resin. It is produced by. The thickness of the overlay film layer after drying is 70 μm.

Furthermore, in Example 1, the topcoat layer was formed on the surface of the overlay film layer. The topcoat layer was formed by coating 10 parts by weight of hexamethylene diisocyanate, 5 parts by weight of a triazine ultraviolet absorber and 5 parts by weight of a hindered amine light stabilizer with respect to 100 parts by weight of an acrylic polyol. The thickness of the top coat layer was 9 g / m ² in terms of solid content, and in Example 1, it was 9 μm.

[Example 2]
In Example 2, a decorative sheet was prepared by changing only the pigment of the thermoplastic resin substrate layer among the preparation conditions of the decorative sheet of Example 1. In Example 2, 2 parts by mass of diketopyrrolopyrrole, 2 parts by mass of quinacridone, 1 part by mass of phthalocyanine and 23 parts by mass of titanium oxide were added to 100 parts by mass of polypropylene resin to produce a thermoplastic resin base material layer.

[Comparative example]
In the comparative example, only the condition of the black pigment used for the printed layer of Example 1 was changed to prepare a decorative sheet. The decorative sheet of the comparative example was produced using an ink using carbon black as a black pigment.
[Evaluation]
The inventors of the present invention evaluated the heat shielding performance, the heat storage performance, and the weather resistance of Example 1, Example 2, and Comparative Example, respectively.

<Weatherability>
The inventors of the present invention evaluated the accelerated weather resistance of a decorative sheet using a metal halide lamp type super accelerated weather resistance tester (manufactured by Daipura Wintes Co., Ltd.). The test was performed under the conditions of a metal halide lamp irradiance of 650 W / m ² and a black panel temperature (test piece temperature) of 53 ° C. And after irradiation, the case where there was no remarkable change in the test piece was evaluated as “◯”, and the case where the surface resin layer was cracked or peeled was evaluated as “x”.
Such an accelerated weather resistance test method is defined in JIS standard K5602.

<Heat insulation performance>
The inventors of the present invention measured the heat shielding performance using a method for measuring the solar reflectance of a coating film defined in JIS standard, K5602. The measurement was performed with a spectrophotometer UV3600 (product name) manufactured by Shimadzu Corporation. And according to the regulation of JIS standard K5602, if the solar reflectance of the coating film was 40% or more, it was evaluated as “◯”, and if it was 40% or less, it was evaluated as “x”.

<Heat storage performance>
In the evaluation of the heat storage performance, the inventors of the present invention bonded a decorative sheet to the surface of one side of an uncoated steel sheet having a length of 21 cm, a width of 29.7 cm, and a thickness of 0.5 mm using an adhesive. Produced. Then, a halogen sphere is installed at a position 15 cm away from the surface directly above the surface of the test piece, and the temperature of the front and back surfaces of the test piece is measured every minute while irradiating with halogen light for 120 minutes. The maximum temperature was recorded.

表１は、上記遮熱性能、蓄熱性能及び耐候性の評価をまとめて示している。表１によれば、イソインドリノン顔料、ジケトピロロピロール顔料及びフタロシアニン顔料を混色して黒色を表した実施例１及び実施例２の化粧シートは、いずれも耐候性及び遮熱性能について「〇」の評価を得た。一方、比較例の化粧シートは、耐候性能について「〇」の評価を得たものの、遮熱性能については「×」と評価された。

Table 1 summarizes the evaluation of the heat shielding performance, the heat storage performance, and the weather resistance. According to Table 1, the decorative sheets of Example 1 and Example 2 in which the color is mixed with an isoindolinone pigment, a diketopyrrolopyrrole pigment, and a phthalocyanine pigment to express black are both “weather resistant” and “heat shielding performance”. Was obtained. On the other hand, although the decorative sheet of the comparative example obtained an evaluation of “◯” for the weather resistance performance, it was evaluated as “×” for the heat shielding performance.

  Moreover, about the heat storage performance, although the test piece of Example 1 and Example 2 and all became 61 degreeC, the temperature of the test piece of the comparative example rose to 72 degreeC. Such a difference is that Example 1 and Example 2 represent black by mixing an isoindolinone pigment, a diketopyrrolopyrrole pigment and a phthalocyanine pigment, whereas the comparative example uses carbon black as a black pigment. It is thought that it was caused by doing.

In addition, the inventors of this invention apply | coated the topcoat layer so that it might become 5 g / m < ² > by solid content application quantity, and produced the decorative sheet which made the other conditions the same as Example 1 and Example 2. . In addition, the inventors of the present invention produced a decorative sheet in which the top coat layer was applied so that the solid content was 10 g / m ^2, and other conditions were the same as in Example 1 and Example 2. . And about such a decorative sheet, the weather resistance and heat-insulating property were evaluated. In this evaluation, the inventors of the present invention obtained good weather resistance and heat shielding properties as in Examples 1 and 2.

  The decorative base material and decorative sheet of the present invention described above are suitable for outdoor use because they do not easily warp even when exposed to sunlight.

DESCRIPTION OF SYMBOLS 1 Cosmetic material 3 Cosmetic sheet 11 Thermoplastic resin base material layer 13 Print layer 15 Overlay film layer 17 2nd adhesive layer 19 Topcoat layer 20 Base material 21 1st adhesive layer 111 Titanium oxide layer 131 Solid print layer 132 Picture layer

Claims (4)

An acrylic urethane in which a coating layer is provided on one side of the thermoplastic resin substrate layer, the thermoplastic resin substrate layer contains a polyolefin resin and titanium oxide, and the coating layer contains a triazine ultraviolet absorber made from the system resin, a thickness of the coating layer has a 10 g / ^{m 2} or less 5 g / ^{m 2} or more in terms of solid content in the coating solution,
A printed layer is provided between the thermoplastic resin base material layer and the coating layer, and the printed layer has a solid printed layer and a pattern layer in this order from the thermoplastic resin base material layer side. In the solid printing layer, the pigment is selected from isoindolinone, disazo, polyazo, diketopyrrolopyrrole, quinacridone, phthalocyanine, and titanium oxide. Reproduced by mixing pyrrole pigment and phthalocyanine pigment,
The thermoplastic resin base layer has a titanium oxide layer composed of titanium oxide on the surface side of the print layer,
The content of the titanium oxide in the thermoplastic resin base material layer is 23 parts by mass or more and 40 parts by mass or less,
Decorative sheet The content of the titanium oxide of said thermoplastic resin base layer having a titanium oxide layer, which is a on 23 parts by weight or less.   The decorative sheet according to claim 1, wherein a thickness of the thermoplastic resin base material layer is 30 μm or more and 120 μm or less.   The thickness of the said titanium oxide layer is 5 micrometers or more and 10 micrometers or less, The decorative sheet of Claim 1 or Claim 2 characterized by the above-mentioned.   A decorative material comprising the decorative sheet according to any one of claims 1 to 3 bonded to a base material.

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