JP2013237248A - Heat barrier decoration sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat barrier decoration sheet which can inexpensively be manufactured in a short delivery time, is excellent in weather resistance, wear resistance and water resistance and the like, has a light block effect, and is also excellent in design performance such as the deepness or the like of an illustration.SOLUTION: In a heat barrier decoration sheet formed by laminating a colored base film layer, a printed layer and an overlay film layer at least in this order, there is used, as a pigment of the printed layer, at least one or more of isoindolinone, disazo, polyazo, diketopyrrolopyrrole, quinacridone, phthalocyanine and a titanium oxide, and as a black pigment in particular, perylene black is used.

Description

  The present invention is mainly used for the outer layer of exterior doors of houses, stores, ships, etc., and is used for outdoor such as window frames, terraces, garages, etc. Regarding the sheet.

  Conventionally, olefin-based decorative sheets with weather resistance have been used for the surface of entrance doors, etc., but weather resistance has been evaluated by actual outdoor exposure and accelerated weather resistance tests, and in the ultraviolet region of sunlight. On the other hand, although it was the design which gave the prescription, it was not considered about the absorption of the heat | fever of an infrared region.

  When actually used, the weather resistance was satisfactory, but the heat storage effect occurred due to the absorption of heat in the infrared light region of sunlight, and as a result, it was transferred to the base material. The chronic problem of swelling and warping due to temperature differences between the front and back remained unresolved.

JP2010-089441

  The present invention has been made to solve such a problem, that is, the problem is that it can be manufactured at a low cost with a short delivery time, and has various physical properties such as weather resistance, wear resistance, and water resistance. An object of the present invention is to provide a heat-insulating decorative sheet that has an excellent light shielding effect and also has excellent design properties such as the depth of a pattern.

  The present invention solves this problem, that is, the invention according to claim 1 is a heat-shielding decorative sheet comprising a colored base film layer, a printed layer, and an overlay film layer laminated in this order. A heat-shielding decorative sheet characterized by using at least one of isoindolinone, disazo, polyazo, diketopyrrolopyrrole, quinacridone, phthalocyanine, and titanium oxide as a pigment, and particularly using perylene black as a black pigment. is there.

  Further, the invention according to claim 2 uses, as the overlay film layer, a homo- or random polypropylene resin added with an ultraviolet absorber and a hindered amine light stabilizer, and further on the surface side of the overlay film layer, 2. The heat-shielding decorative sheet according to claim 1, wherein a coating layer obtained by adding an ultraviolet absorber and a hindered amine light stabilizer to acrylic polyol and hexamethylene diisocyanate is provided.

  The invention according to claim 3 uses, as the overlay film layer, a polymethylmethacrylic resin added with an ultraviolet absorber and a hindered phenol antioxidant, and further between the print layer and the overlay film layer. The thermal insulation decorative sheet according to claim 1, wherein an adhesive layer comprising at least one of acrylic resin, polyester resin, and vinyl chloride = vinyl acetate copolymer resin is provided.

Thermal absorption occurs due to the absorption of heat in the infrared light region of sunlight, and as a result, thermal expansion occurs due to transmission to the base material, and warpage occurs due to a temperature difference between the front and back sides. According to the first aspect of the present invention, by using a specific pigment for the colored base film layer and the printing layer, the reflectance in the infrared light region can be increased to a certain level or more, and a light shielding effect is obtained. Therefore, it is possible to prevent warping.
In particular, carbon black has often been used as a black pigment in the past, but because of its low reflectivity in the near-infrared light region (781 nm to 2500 nm), heat storage occurs due to heat absorption in the infrared light region. Was. This is improved by using perylene black pigment as an alternative.

  According to the invention described in claim 2, the weather resistance over time and the light shielding effect can be maintained by specifying the resin of the overlay film layer and further providing a coating layer of the specific resin on the surface side.

  According to the invention of claim 3, by specifying the resin of the overlay film layer and further providing an adhesive layer of the specific resin between the printing layer and the overlay film layer, the interlayer strength over time and the light shielding effect can be maintained. And made it possible.

It is explanatory drawing which shows the shape of the cross section of one Example of the thermal insulation decorative sheet of this invention.

  Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 shows a cross-sectional shape of one embodiment of the heat-shielding decorative sheet of the present invention. It consists of a colored base film layer 1, a printing layer 2, and an overlay film layer 3, and is provided with an adhesive layer 4 and a coating layer 5 as appropriate.

  As the colored base film layer 1 in the present invention, a homo- or random polypropylene-based resin or polyethylene resin that is easy to handle as a substitute for vinyl chloride resin is preferably used. In addition, it is preferable to appropriately use a hindered phenol-based antioxidant, an ultraviolet absorber, a hindered amine-based light stabilizer and the like.

  What is necessary is just to provide the printing layer 2 in this invention using the ink suitable for the said colored base film layer 1. FIG. Specifically, if the base film layer 1 is a polypropylene resin, a mixture of urethane resin and vinyl chloride = vinyl acetate copolymer resin is preferably used.

  As the pigment used for the printing layer 2 in the present invention, at least one of isoindolinone, disazo, polyazo, diketopyrrolopyrrole, quinacridone, phthalocyanine, and titanium oxide is used. Thereby, the reflectance in the infrared light region can be increased to a certain level or more.

As the over film layer 3 in the present invention, when the coating layer 5 is further provided on the surface, a resin may be selected in consideration of interlayer adhesion with the colored base film layer 1 and the printing layer 2. If the colored base film layer 1 is a homo- or random polypropylene resin or polyethylene resin, the same homo- or random polypropylene resin or polyethylene resin is preferable, and it is preferable to add an ultraviolet absorber and a hindered amine light stabilizer. is there.
On the other hand, when the overlay film layer 3 is a surface layer, it is preferable to use a polymethylmethacrylic resin, and it is preferable to add an ultraviolet absorber and a hindered phenol-based antioxidant, considering interlayer adhesion. It is preferable to provide an adhesive layer 4 made of at least one of acrylic resin, polyester resin, and vinyl chloride = vinyl acetate copolymer resin between the printing layer 2 and the printed layer 2.

  As a colored base film layer 1, 3 parts by weight of a hindered phenol antioxidant, 1 part by weight of an ultraviolet absorber, and 1 part by weight of a hindered amine light stabilizer are added to 100 parts by weight of a polypropylene resin, and the thickness is 60 μm. To form a film.

  As a printed layer 2 on the surface of the colored base film 1, a mixture of urethane resin and vinyl chloride = vinyl acetate copolymer resin in a ratio of 7: 3 is mixed with 100 parts by weight of hexamethylene diisocyanate and isophorone diisocyanate in a ratio of 2: 8. Add 3 parts by weight of a curing agent consisting of a mixture, add a pigment consisting of isoindolinone, polyazo, and phthalocyanine to make an ink, and after performing color printing twice, use the same ink as above Printed with wood grain, and finally, a curing agent consisting of a mixture of hexamethylene diisocyanate and isophorone diisocyanate in a ratio of 2: 8 is added to 100 parts by weight of a urethane resin and vinyl chloride = vinyl acetate copolymer resin mixed in a ratio of 7: 3. Add 3 parts by weight and print a conduit pattern using a pigment made of perylene black. It was carried out grain printing with.

  On the surface of the colored base film 1 on which the printing layer 2 is provided, as an overlay film layer 3, 0.5 parts by weight of an ultraviolet absorber and 0.3 parts by weight of a hindered amine light stabilizer with respect to 100 parts by weight of a random polypropylene resin. Was added by melt extrusion, and the thickness after drying was 70 μm.

  Finally, the surface of the overlay film layer 3 was added with 10 parts by weight of hexamethylene diisocyanate, 5 parts by weight of an ultraviolet absorber and 5 parts by weight of a hindered amine light stabilizer with respect to 100 parts by weight of an acrylic polyol. Thus, a thermal insulation decorative sheet was prepared.

<Comparative example>
As a color tone of the colored base film used for the colored base film layer 1, a color is blended using a pigment so as to be equivalent to the color tone after the color tone is adjusted by solid printing in Example 1, and a conduit is formed in the printing layer 2. A decorative sheet was prepared using carbon black as the pigment in the ink for printing the pattern, and the other material configurations similar to those in Example 1.

<Performance comparison 1>
About the heat-insulating decorative sheet of Example 1, Example 2 and Comparative Example 1, using a U-4100 spectrophotometer manufactured by Hitachi High-Technologies Corporation, the heat-insulating decorative sheet is reflected with respect to light having a wavelength of 250 nm to 2500 nm. Was measured. The results are shown in Table 1.

<Performance comparison 2>
In addition, when a non-painted steel sheet having a length of 21 cm and a width of 29.7 cm and a thickness of 0.5 mm is bonded to a thermal insulation decorative sheet only on one side using an adhesive, the halogen bulb is separated from the top by 15 cm. Then, irradiation was continued for 120 minutes so that the heat-shielding decorative sheet became the irradiated surface, the temperature was recorded on the front and back of the steel sheet every minute, and the maximum value was measured. The results are shown in Table 2.

  From Table 1, it was confirmed that the reflectance in the infrared light region (781 nm to 2500 nm) is high and the heat shielding property is excellent. From Table 2, it was confirmed that the heat shielding property was excellent.

  The heat-insulating decorative sheet of the present invention can be used not only for the surface layer of exterior doors of residences, stores, ships, etc., but also outdoors such as window frames, terraces, and garages.

DESCRIPTION OF SYMBOLS 1 ... Colored base film layer 2 ... Printing layer 3 ... Overlay film layer 4 ... Adhesive layer 5 ... Coating layer

Claims (3)

  In a heat-shielding decorative sheet obtained by laminating a colored base film layer, a printing layer, and an overlay film layer in this order, isoindolinone, disazo, polyazo, diketopyrrolopyrrole, quinacridone, phthalocyanine, titanium oxide as a pigment for the printing layer A thermal insulation decorative sheet characterized in that at least one of the above is used, and in particular, perylene black is used as the black pigment.   As the overlay film layer, a homo- or random polypropylene resin to which an ultraviolet absorber and a hindered amine light stabilizer are added is used, and on the surface side of the overlay film layer, an acrylic polyol and hexamethylene diisocyanate are combined with an ultraviolet absorber. The heat-insulating decorative sheet according to claim 1, further comprising a coating layer to which a hindered amine light stabilizer is added.   As the overlay film layer, a polymethylmethacrylic resin added with an ultraviolet absorber and a hindered phenol antioxidant is used, and an acrylic resin, a polyester resin, and vinyl chloride between the printed layer and the overlay film layer The thermal insulation decorative sheet according to claim 1, further comprising an adhesive layer made of at least one vinyl acetate copolymer resin.