JP4500387B2 - Surface decorative sheet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a surface decorative sheet used for interior / exterior of a building, surface makeup of furniture / furniture, interior of a vehicle, and the like.
[0002]
[Prior art]
The surface decorative sheet is susceptible to scratches on the surface layer, not only when handling and processing products that are affixed to substrates such as plywood, metal plates, and plastic plates, but also in the final product after processing. . For this reason, the surface decorative sheet is required to have scratch resistance and abrasion resistance on the surface layer.
[0003]
Therefore, conventionally, for example, as disclosed in JP-A-8-183147, a decorative material used as a surface decoration material for furniture or the like has a crosslinkable resin so that its surface has wear resistance. And a surface layer formed of a coating composition containing spherical particles having a hardness higher than that of the binder.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to improve the scratch resistance and abrasion resistance of the surface layer of the surface decorative sheet, thereby enhancing the durability of the decorative sheet. Another object of the present invention is to make it possible for a person who watches the expression on the printed layer constituting the surface decorative sheet to have a visual three-dimensional effect, thereby further enhancing the decorative effect of the surface decorative sheet.
[0005]
As used herein, the term “release agent” is as defined below. That is, the term “release agent” refers to a release agent such as silicone oil that is pre-applied to the mold in order to facilitate the separation of the plastic casting product from the mold and other known applications applicable to this purpose. Refers to the agent.
[0006]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention increases the hardness of the surface layer of the surface decorative sheet and increases the slipping resistance of the surface layer of an object touching the surface layer, thereby providing scratch resistance and abrasion resistance. It is intended to increase. Therefore, the surface decorative sheet according to the present invention includes a printing layer on a printing substrate, a first coating layer on the printing layer, and a second coating layer on the first coating layer. The coating layer is made of a thermosetting resin or a radical polymerization resin, and the second coating layer is spherical with respect to 100 parts by weight of the binder made of the thermosetting resin or radical polymerization resin after drying and reaction. It is characterized by comprising a coating composition adjusted so that the glass beads are 20 to 100 parts by weight and the silicone release agent is 2 to 10 parts by weight. The thermosetting resin is a urea resin, melamine resin, phenol resin, epoxy resin, unsaturated polyester resin, alkyd resin, urethane resin, or alkyd resin and urea resin or melamine resin. Can be used, and the radical polymerization resin can be an ultraviolet curable resin or an electron beam curable resin. Furthermore, low alkaline glass can be used for the spherical glass beads.
[0007]
In order to achieve the above object, the present invention is characterized in that the thermosetting resin, the radical polymerization resin, and the spherical glass beads are transparent or translucent.
[0008]
【The invention's effect】
According to the present invention, since the first coat layer of the surface decorative sheet is composed of a thermosetting resin or a radical polymerization resin, the first coat layer can be provided with wear resistance. Further, by configuring the second coat layer as containing a larger amount of spherical glass beads than in the prior art, the surface hardness and slipperiness can be further increased. By comprising as what contains a silicone type mold release agent, the slipperiness of the surface can be further increased, and thereby the second layer can be provided with high scratch resistance and abrasion resistance.
[0009]
According to the present invention, the thermosetting resin or radical polymerization resin constituting the first layer is transparent or translucent, and similarly, the spherical glass beads constituting the second layer are also transparent or translucent. Therefore, the viewer can see the solid color, the pattern, etc. of the lower printed layer as a deep and sharp three-dimensional expression through the surface layer composed of the second layer and the first layer. The decorative effect of the sheet can be enhanced. This is because a phase difference such as a pattern of the printing layer is obtained by providing the first coating layer having a certain thickness on the printing layer, and the second coating layer on the first coating layer is transparent or semi-transparent. By providing the second coating layer containing transparent spherical glass beads, a difference between incident light and reflected light is generated, so that a stereoscopic effect can be obtained.
[0010]
Embodiment
In the embodiment shown in FIG. 1, the surface decorative sheet 10 according to the present invention includes a printing layer 14 on a printing substrate 12, a first coating layer 16 on the printing layer, and a second coating on the first coating layer. Coating layer 18. The first coat layer 16 is made of a thermosetting resin or a radical polymerization resin. The second coat layer 18 is composed of 20 to 100 parts by weight of spherical glass beads and silicone-based release agent with respect to 100 parts by weight of the binder made of a thermosetting resin or radical polymerization resin after drying and reaction. It consists of a coating composition adjusted to 2 to 10 parts by weight.
[0011]
The printing substrate 12 is paper, plastic film, metal foil, nonwoven fabric or synthetic paper. This paper includes thin paper, emulsion-impregnated paper, latex-impregnated paper and the like. The plastic film includes polyethylene, polypropylene, polyethylene terephthalate, polyvinyl chloride, polyvinylidene chloride, polystyrene, polycarbonate, polyvinyl alcohol, polyacryl, amorphous polyethylene terephthalate, nylon, cellophane, and the like. Furthermore, the metal foil includes aluminum foil, iron foil, stainless steel foil, and the like.
[0012]
The thermosetting resins of the first coat layer 16 and the second coat layer 18 are urea resin, melamine resin, phenol resin, epoxy resin, unsaturated polyester resin, alkyd resin, urethane resin, or alkyd. It is an amino alkyd resin that is a combination of a urea resin and a urea resin or a melamine resin. Moreover, the radical polymerization type resin of the first coat layer 16 and the second coat layer 18 is an ultraviolet curable resin or an electron beam curable resin.
[0013]
The glass beads of the second coat layer are made of low alkali glass.
[0014]
The radicals of the first coat layer 16 and the second coat layer 18, the thermosetting resin and the radical polymerization resin, and the spherical glass beads of the second coat layer 18 give a second print expression such as a solid color and a pattern of the print layer 14. In order to be visible from the outside through the coat layer and the first coat layer, it is transparent or translucent. Note that the silicone release agent in the second coat layer, for example, silicone oil, is colorless and transparent, and this does not interfere with the above visual recognition.
[0015]
【Example】
A latex-impregnated paper is used as the printing substrate 12, solid printing is performed using an ink that adheres to the printing substrate 12 by a gravure printing machine, and then a wood grain pattern is printed to form the printing layer 14. Thereafter, a urethane resin is applied onto the printing layer 14 using a 150 μ gravure plate to form the first coat layer 16. The layer thickness at that time is such that the thickness after the reaction is 15 μm. Then, 100 parts of binder which is a main component of the non-volatile content of 40%, a silicone based releasing agent (NV40%) 6 parts, the second coating layer a coating solution obtained by mixing 100 parts of spherical glass beads with a gravure plate of 50.mu. 18 Form. The layer thickness at that time is such that the thickness after the reaction is 4.5 μm. The surface-cured raw sheet 10 thus obtained is excellent in scratch resistance and abrasion resistance, and brings a three-dimensional effect to the printed pattern.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view of a surface decorative sheet according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Surface decorative sheet 12 Printing base material 14 Printing layer 16 1st coating layer 18 2nd coating layer

Claims (5)

  A printing layer on a printing substrate; a first coating layer on the printing layer; and a second coating layer on the first coating layer, wherein the first coating layer is a thermosetting resin or a radical polymerization resin. The second coating layer is composed of 20 to 100 parts by weight of spherical glass beads and 100 parts by weight of silicone based on 100 parts by weight of a binder comprising a thermosetting resin or radical polymerization resin after completion of drying and reaction. A surface decorative sheet comprising a composition coated with a gravure plate, adjusted so that the mold is 2 to 10 parts by weight.   The thermosetting resin includes urea resin, melamine resin, phenol resin, epoxy resin, unsaturated polyester resin, alkyd resin, urethane resin, or alkyd resin and urea resin or melamine resin. The surface decorative sheet according to claim 1, which is an aminoalkyd resin in combination.   The surface decorative sheet according to claim 1, wherein the radical polymerization resin is an ultraviolet curable resin or an electron beam curable resin.   The surface decorative sheet according to claim 1, wherein the spherical glass beads are made of low alkali glass.   The surface decorative sheet according to claim 1, wherein the thermosetting resin, the radical polymerization resin, and the spherical glass beads are transparent or translucent.

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