JP3341222B2 - Mirror glossy makeup sheet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a plastic surface,
The present invention relates to a specular gloss decorative sheet which is used by attaching it to the surface of wood, other furniture, building interior materials, etc. for the purpose of decoration or surface protection.

[0002]

2. Description of the Related Art Conventionally, when a decorative sheet is provided with an uneven pattern or a mirror surface smoothness, a decorative sheet made of a thermoplastic resin has a desired surface (mirror surface or uneven pattern).
After the forming sheet having the shape is laminated and pressurized with a heated roll, the forming sheet is peeled off to form the surface of the forming sheet on the surface of the decorative sheet (Japanese Patent Publication No. 42-551, etc.). . However, the above method cannot form an excellent mirror surface with insufficient smoothness of the mirror surface, and the surface of the thermoplastic resin sheet is easily scratched depending on the material, and sag easily occurs.
When the surface is mirror-like, there is a drawback that defects are more conspicuous.

[0003] As described in JP-B-62-25429, an ultraviolet curable paint is applied to the surface of a decorative sheet and then coated with a shaping film having a desired surface shape (mirror surface or the like). Then, a technique has been developed in which the paint is cured with ultraviolet rays, the surface shape of the molded film is molded on a molding surface, and then the film is peeled to obtain a desired surface. However, in recent years, decorative materials having higher specular gloss have been required for exterior materials of refrigerators and the like in recent years, and in order to satisfy such requirements, the specular gloss and surface smoothness are still not achieved by the above method. Not satisfying,
The development of a higher-grade decorative sheet has been desired.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide an excellent decorative sheet which satisfies more advanced user requirements. Is what you do.

[0005]

Means for Solving the Problems In order to achieve the above-mentioned object, the decorative sheet of the present invention is provided on one side of a base sheet,
A transparent resin layer, and a shaping film composed of a resin film are sequentially laminated, and in a state where the transparent resin is solidified,
This is a specular gloss sheet obtained by heating and pressing with a specular roll and then peeling off the shaped film. The transparent resin of the present invention is composed of an ionizing radiation curable resin.

[0006] The decorative sheet 1 of the present invention comprises a transparent resin layer 1 on one surface of a base sheet 14 as shown in FIGS.
2. The shaping film 11 is sequentially laminated, and although not shown, the resin is solidified at room temperature in a drying and solidifying portion of the resin by a method according to the characteristics of the resin, and further formed by a heating drum 36. After the sheet 21 is heated and pressurized and cooled by the mirror roll 40, the shaping film 11 is peeled off to form the decorative sheet 1 having a mirror gloss on the surface.

When the transparent resin layer 12 is provided with a component containing an evaporation component such as a solvent, the base sheet 14 and the shaping film 11 can be laminated and adhered after removing the evaporation component in a drying furnace. The transparent resin layer 12 may be applied and dried on either surface of the base sheet 14 or the forming film 11, but from the process side, after applying and drying the forming film, It is preferable to adhere closely. After the transparent resin layer is provided on the shaping film or the base sheet, when the base sheet or the transparent sheet is brought into close contact, the transparent resin layer does not necessarily need to be completely solidified or cured. When the evaporation of the volatile component as a solvent is completed, the layers are brought into close contact with each other, and the reaction can be advanced by aging in a stacked form.

As the base sheet, there can be used many base sheets usually used as base sheets for decorative materials. For example, polyolefins such as polyethylene and polypropylene, polyvinyl chloride, polyvinylidene chloride, vinyl resins such as polyvinyl alcohol, ethylene / vinyl acetate copolymer, saponified ethylene acetic acid / vinyl copolymer, ethylene / acrylic acid copolymer , Polyolefin copolymers such as ethylene-acrylate copolymers, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polymethyl methacrylate, polymethyl acrylate, acrylic resins such as polyethyl methacrylate, polystyrene, Resin sheets such as acrylonitrile-butadiene-styrene copolymer (ABS), cellulose triacetate, and polycarbonate can be used.

[0009] The transparent resin layer is made of a thermosetting resin such as amino alkyd, a two-component curing reaction type resin such as unsaturated polyester, polyester isocyanate, polyether.
It can be selected from isocyanate, epoxy resin / amine cured product, epoxy resin cured product by acid anhydride, epoxy / polyamide, etc.

The transparent resin layer formed from the solvent-soluble varnish includes cellulose acetate butyrate, linear polyester, vinyl chloride / vinyl acetate copolymer and the like. In addition, a transparent resin layer can be provided by melt extrusion of a thermoplastic resin such as polycarbonate and polyacetal. In the case where the above-mentioned resin does not provide adhesion to the base sheet and the imprinting sheet, it is preferable to form a primer layer as a bonding medium on the surface.

The ionizing radiation-curable resin is a general-purpose monomer,
It can be used by selecting from a prepolymer and a polymer. For example, an acryloyl group, a methacryloyl group,
The main component is a monomer, prepolymer, or a mixture of two or more polymerizable unsaturated bonds such as an acryloyloxy group and a methacryloyloxy group, and a polymerizable group such as an epoxy group and a thiol group. Can be.

Examples of the above prepolymer include acrylates such as urethane acrylate, urethane methacrylate, polyester acrylate, polyester methacrylate, epoxy acrylate, epoxy methacrylate, methacrylates, unsaturated polyesters, thiols, Polyvinylpyrrolidone and the like. Examples of the monomer include acrylate monomers such as trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, dipentaerythritol hexaacrylate, and dipentaerythritol hexamethacrylate.

An antistatic agent, a lubricant and the like for modifying the physical properties of the surface layer can be added to these resins. In addition, the ionizing radiation-curable resin is to be applied to the base sheet that will eventually become a decorative sheet, but if allowed in the process, after application to the film surface for shaping,
It can also be bonded to a base sheet. In particular, when laminating a printed base sheet and a shaping film, in which air bubbles are easily involved, it is an effective method for finally smoothing the surface.

Examples of the material of the film for shaping include olefin resins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, and acrylic resins such as polymethyl methacrylate, polymethyl acrylate and polyethyl methacrylate. And resin films such as polystyrene, acrylonitrile / butadiene / styrene copolymer (ABS), cellulose triacetate, cellophane, polycarbonate, saponified ethylene / vinyl acetate copolymer, and polyamide. To these films, a release agent or a lubricant can be added if necessary. When using an ionizing radiation-curable resin, particularly in the case of an ultraviolet-curable resin, a transparent film that does not hinder the transmission of ultraviolet light is selected.

[0015]

According to the present invention, a transparent resin such as an ionizing radiation-curable resin and a molding film are sequentially laminated on a base sheet of a decorative sheet, and ultraviolet rays are irradiated in a state of being in close contact with the molding film. The hardening resin is cured or solidified by promoting the reaction of the transparent resin layer by aging or by aging. However, the resin at this point includes an uncured resin having a relatively small degree of polymerization, and the interface with the imprint film is not completely adhered, and the surface shape of the imprint film is completely reduced. It has not been reproduced. By heating, pressurizing, and cooling steps shown in FIG.
The resin layer is softened by heating the sheet with the heating drum 36,
The mirror roll 40 and the backing roll 37 are pressed against each other to adhere to the surface of the shaping film, and the mirror smoothness of the mirror roll and the mirror tone of the shaping film are faithfully formed on the transparent resin layer on the other side. The reaction and solidification are completed by forming an excellent mirror gloss with a smooth surface. Then, by releasing the imprinting film in a state where the imprinting constituent sheet is cooled and solidified, the mirror gloss acts so as to be maintained in a state formed on the surface of the base material sheet.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. (Example 1) A stone pattern 13 was printed on one surface of a colored polyvinyl chloride sheet having a thickness of 0.1 mm as a base material sheet 14 by a normal gravure printing method as shown in FIG. ,
Then, a commercially available ionizing radiation-curable coating material (Seika Beam 301-G, manufactured by Dainichi Seika Co., Ltd.) is applied to the printing surface by a known gravure printing method (not shown) to have a thickness of 5 μm.
Ionizing radiation curable resin layer 1 which is a transparent resin layer
2 is applied. A polyester film (Lumirror T-70, manufactured by Toray Industries, Inc.) having a thickness of 25 μm, which is to be used as the imprinting film 11, is closely adhered thereto, and ionizing radiation equipped with four known 160 KW ozone high-pressure mercury lamps is provided. Ultraviolet rays were irradiated by an irradiation device (the device is not shown) to obtain a shaping constituent sheet 21.

Further, the first heating / pressing machine 30 shown in FIG.
After the above-mentioned forming component sheet 21 is mounted on the feeding reel 31 and preheated by the heating drum 36 (drum temperature 150 to 170 ° C.), the mirror surface roll 40 (roll temperature 50 to
80 ° C, 2.8 kg / cm ² , line speed 7-20
m / min. ), Heating and pressurizing, cooling roll 41,
After cooling at 42, the shaping film 11 was wound up from the shaping component sheet 21 as a peeled-off shaping film 44, and the decorative sheet 1 of Example 1 was obtained as a product winding roll 43.

Example 2 A base sheet 14 shown in FIG.
A commercially available ionizing radiation-curable paint (Seika Beam P-1730, manufactured by Dainichi Seika Co., Ltd.) is applied to one surface of a transparent polyvinyl chloride sheet having a thickness of 0.1 mm by a gravure printing method and cured. An ionizing radiation-curable resin layer 12, which is a transparent resin layer, is provided so that the thickness of the resulting film becomes 15 μm, and a 25 μm-thick polyester film (Lumilar T-Lite manufactured by Toray Industries, Ltd.) similar to that in Example 1 is provided thereon. 70) as a shaping film 11, which were adhered and adhered, and irradiated with ultraviolet rays by the same ionizing radiation irradiation apparatus as in Example 1 to form a shaping constituent sheet 22.

Next, the forming component sheet 22 is mounted on the first reel 31 of the heating / pressing machine 30 shown in FIG. 5, and the pattern 13 of the stones is previously attached to the reel 32 by a normal gravure printing method. The printed polyvinyl chloride sheet 15 having a thickness of 0.1 mm is mounted thereon, and the third reel 33 is provided with a transparent polyvinyl chloride sheet 16 serving as a backer sheet having a thickness of 0.5 mm. Then, the shaping film 11, the ionizing radiation-curable resin 12, the base sheet 14, the picture layer 13, the coloring sheet 15, and the backer sheet 16 are sequentially laminated and bonded through a pressure roll 34, and the infrared heater 35 , Heating drum 36 (drum temperature 15
After preheating at 0 to 170 ° C.), pressure bonding is performed with a mirror roll 40 (roll temperature 50 to 80 ° C., pressure 2.8 kg / cm ² , line speed 7 to 20 m / min.) To improve the surface shaping effect. After the welding between the films, the decorative film 2 was cooled by the cooling rolls 41 and 42 and the shaping film 11 was peeled off to obtain the decorative sheet 2 of Example 2.

Example 3 Similarly to Example 2 described above, a commercially available ionizing radiation-curable type was applied to one surface of a transparent polyvinyl chloride sheet having a thickness of 0.1 mm, which is the base sheet 14 shown in FIG. Paint (Seika Beam P-173, manufactured by Dainichi Seika Co., Ltd.)
0) is applied by gravure printing, and an ionizing radiation-curable resin layer 12 which is a transparent resin layer is provided so that the film thickness after curing becomes 15 μm. And a 25 μm thick polyester film (Lumilar T-70, manufactured by Toray Industries, Inc.)
Ultraviolet rays were irradiated by the same ionizing radiation irradiation apparatus as in Example 1 to obtain a shaping constitution sheet 23 shown in FIG.

Next, the forming component sheet 23 is mounted on the feeding reel 31 of the heating / pressing machine 30 shown in FIG. 5, and the feeding reel 32 has a thickness of 0.
A 5 mm transparent polyvinyl chloride sheet 16 is mounted, and a payout reel 33 is mounted with a 0.1 mm thick colored polyvinyl chloride sheet 15 on which a stone pattern 13 is printed in advance by a normal gravure printing method. , A shaping film 11, an ionizing radiation-curable resin layer 12, a base film 14, a backer sheet 16, a picture layer 13, and a coloring sheet 15 in this order, and pasted through a pressure roll 34;
After preheating with the heating drum 36 (drum temperature 150 to 170 ° C.), the mirror surface roll 40 (roll temperature 50 to 80 ° C.,
Pressure 2.8 kg / cm ^2, line speed 7～20M /
min. ) To improve the molding effect on the surface and weld between the films, and then cool and peel off the molding film 11 from the molding composition sheet 23 to obtain the decorative sheet of Example 3. 3 was constructed.

Example 4 Similarly to Example 2, a commercially available ionizing radiation-curable paint (manufactured by Dainichi Seika Co., Ltd.) was applied to one surface of a transparent polyvinyl chloride sheet 14 having a thickness of 0.1 mm.
Seika Beam P-1730) was coated by gravure printing to form an ionizing radiation-curable resin layer 12 having a cured film thickness of 15 μm, and a 25 μm-thick polyester similar to that of Example 1 was formed thereon. Film for shaping 1 by film (Lumilar T-70, manufactured by Toray Industries, Inc.)
4 are irradiated with ultraviolet rays by the same ionizing radiation irradiating apparatus as in Example 1, and the forming sheet 24 shown in FIG.
I got

Next, the shaping component sheet 24 is mounted on a pay-out reel 31 of a heating / pressing machine 30 shown in FIG. 5, and the pattern 13 of the stone is printed on the pay-out reel 32 in advance by a normal gravure printing method. The colored polyvinyl chloride sheet 14 having a thickness of 0.1 mm is attached, and the shaping film 11
The ionizing radiation-curable resin layer 12, the base sheet 14, the picture layer 13, and the colored sheet 15 are laminated in this order and the heating drum 36
After preheating at (drum temperature 150-170 ° C),
Mirror roll 40 (roll temperature 50-80 ° C, pressurized 2.8
Kg / cm ² , line speed 7-20 m / min. )
Then, after performing the improvement of the shaping effect and the welding between the films, the film 11 for shaping is peeled off from the shaping component sheet 24 to obtain the decorative sheet 4 of Example 4. Was.

(Comparative Example 1) As Comparative Example 1, a laminated sheet was prepared by the same layer configuration and the same method as in Example 1. However,
The shaping film 11 was peeled off without processing the mirror-finished roll, and a decorative sheet of Comparative Example 1 was formed (not shown).

The surface state of the decorative sheet according to the embodiment of the present invention and the decorative sheet according to the comparative example were compared with each other in terms of gloss value, sharpness, and surface roughness. Table 1 shows the results of the comparison. The 60 ° gloss value is a value measured by a digital gloss meter GM-3D manufactured by Murakami Color Research Laboratory, and the sharpness is measured by a sharpness gloss meter manufactured by Japan Color Research Laboratory. The surface roughness is a value measured by a surf coder AY-31 by Kosaka Laboratory Co., Ltd.

[0026]

[Table 1]

[0027]

From the above results, the molding film having a mirror-like surface, which is the effect of the present invention, is cured by irradiating with ionizing radiation while being in close contact with the molding resin layer, and further heated by a mirror-finished roll. By applying pressure, the mirror tone of the molding film was completely molded to form the ionizing radiation-curable resin layer on the side to be laminated, and excellent mirror gloss with a smooth surface was obtained.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a cross section showing a laminated structure of a decorative sheet according to Example 1 of the present invention.

FIG. 2 is a conceptual diagram of a cross section showing a laminated structure of a decorative sheet according to a second embodiment of the present invention.

FIG. 3 is a conceptual diagram of a cross section showing a laminated structure of a decorative sheet according to a third embodiment of the present invention.

FIG. 4 is a conceptual diagram of a cross-sectional view showing a laminated structure of a decorative sheet according to Example 4 of the present invention.

FIG. 5 shows the heating and heating of a mirror-finished roll for producing a decorative sheet according to the present invention.
It is a figure showing a pressurization process.

[Description of Signs] 1, 2, 3, 4 decorative sheet 11 film for shaping 12 transparent resin layer 13 picture layer 14 base sheet 15 colored sheet 16 backer sheet 21, 22, 23, 24 shaping constituent sheet 30 heating / Pressing machine 31, 32, 33 Feeding reel 34 Pressure roll 35 Infrared heater 36 Heating drum 37 Backing roll 40 Mirror roll 41, 42 Cooling roll 43 Product take-up roll 44 Peeling shaped film

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B32B 1/00-35/00 B05D 1/00-7/26

Claims (2)

(57) [Claims] 1. A transparent resin layer on one surface of a base sheet.
And laminating the embossing film comprising a resin film in this order, the transparent resin is a solidified state at room temperature, further, pressurized heat a mirror roll, after processing pressure is obtained by peeling off the embossing film A mirror glossy decorative sheet characterized by the above-mentioned. 2. A specular gloss decorative sheet, wherein the transparent resin according to claim 1 is an ionizing radiation curable resin.