JPH07276568A - Specular glossy decorative sheet - Google Patents

Abstract

PURPOSE:To obtain a specular glossy sheet used in the application to furniture, building interior materials, and the like for the purpose of decoration or surface protection by providing a higher-gloss surface decoration to a plastic or wood material. CONSTITUTION:In the production of a decorative sheet 1 having a specular glossy surface, a transparent resin layer 12 and a shaping film 11 are laminated on one surface of a substrate sheet 14 in this order, in the state that the transparent resin is set, this laminate is again processed under heat and pressure by a mirror roll, and the shaping film 11 is released to obtain the title sheet.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a plastic surface,
The present invention relates to a mirror-gloss decorative sheet that is used by being attached to the surface of wood, various other furniture, interior materials for construction, 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 mirror surface smoothness, the desired surface (mirror surface or uneven pattern) is applied to the decorative sheet made of a thermoplastic resin.
The shape-imparting sheet having the above was laminated and pressed by a heated roll, and then the shape-imparting sheet was peeled off to form the shape of the shape-imparting sheet on the decorative sheet surface (Japanese Patent Publication No. 42-551, etc.). . However, in the above method, the smoothness of the mirror surface is insufficient to form an excellent mirror surface, and the surface of the thermoplastic resin sheet is easily scratched depending on the material and slack is likely to occur,
When the surface is mirror-like, there is a drawback that defects are more noticeable.

Further, as described in JP-B-62-25429, after coating a surface of a decorative sheet with an ultraviolet-curable coating material, coating with a shaped film having a desired surface shape (mirror surface etc.). Then, a technique has been developed in which the coating material is cured with ultraviolet rays, the surface shape of the shaped film is shaped on the molding surface, and then the film is peeled to obtain a desired surface. However, in recent years, as for exterior materials for refrigerators and the like, decorative materials having more specular gloss have been demanded. Therefore, in order to satisfy such requirements, the above method still requires specular gloss and surface smoothness. Not satisfied,
Development of a higher-grade decorative sheet has been desired.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide an excellent decorative sheet that satisfies the requirements of higher users. To do.

[0005]

In order to achieve the above object, the decorative sheet of the present invention comprises:
A transparent resin layer and a shaping film are laminated in this order, and the transparent resin in a solidified state is further heated by a mirror surface roll, subjected to pressure processing, and then peeled off the shaping film to obtain a mirror gloss sheet. . The transparent resin of the present invention is composed of an ionizing radiation curable resin.

The decorative sheet 1 of the present invention has a transparent resin layer 1 on one surface of a base sheet 14 as shown in FIGS.
2. Laminating the shaping film 11 in order, and, though not shown, solidify at a normal temperature in a drying and solidifying portion of the resin by a method according to the characteristics of the resin, and further form a shaping by the heating drum 36. After the sheet 21 is heated, pressed by the mirror surface roll 40, and cooled, the patterning 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 formed of a material containing an evaporation component such as a solvent, the base sheet 14 and the shaping film 11 can be laminated and adhered to each other after the evaporation component is removed in a drying furnace. The transparent resin layer 12 may be applied and dried on either surface of the base sheet 14 or the shape-imparting film 11, but from the process side, after application and drying on the shape-imparting film, the base material sheet is in the same line. It is preferable to closely contact with. After providing the transparent resin layer on the patterning film or the base sheet, the transparent resin layer does not necessarily have to be completely solidified or cured when the base sheet or the transparent sheet is adhered. It is also possible to carry out the adhesion by laminating in a state where the evaporation of the volatile component as the solvent is completed, and allow the reaction to proceed by aging in the laminated form.

As the base material sheet, many materials which are usually used as base material sheets for decorative materials can be used. For example, polyolefin such as polyethylene and polypropylene, vinyl chloride such as polyvinyl chloride, polyvinylidene chloride and polyvinyl alcohol, ethylene / vinyl acetate copolymer, saponified ethylene acetate / vinyl copolymer, ethylene / acrylic acid copolymer Polyolefin copolymers such as ethylene-acrylic acid ester copolymers, polyesters such as polyethylene terephthalate and polybutylene terephthalate, acrylic resins such as methyl polymethacrylate, methyl polyacrylate, ethyl polymethacrylate, polystyrene, Resin sheets such as acrylonitrile / butadiene / styrene copolymer (ABS), cellulose triacetate, and polycarbonate can be used.

The transparent resin layer comprises aminoalkyd which is a thermosetting resin, unsaturated polyester which is a two-component curing reaction type resin, polyester isocyanate, and polyether.
It can be selected from isocyanate, epoxy resin / amine cured product, cured product of epoxy resin acid anhydride, epoxy / polyamide and the like.

The transparent resin layer formed from a solvent-soluble varnish includes cellulose acetate butyrate, linear polyester, vinyl chloride / vinyl acetate copolymer and the like. A thermoplastic resin such as polycarbonate or polyacetal can be provided with a transparent resin layer by melt extrusion. When the above-mentioned resin does not provide adhesion to the base material sheet and the shaping sheet, it is preferable to form a primer layer as an adhesion medium on that surface.

The ionizing radiation curable resin is a general-purpose monomer,
A prepolymer or a polymer can be selected and used. For example, an acryloyl group, a methacryloyl group in one molecule,
The main component is a monomer, prepolymer, or a mixture of both, which has two or more polymerizable groups such as an acryloyloxy group, a methacryloyloxy group, or a polymerizable unsaturated bond, or an epoxy group or a thiol group. You can

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

An antistatic agent, a lubricant or the like which modifies the physical properties of the surface layer may be added to these resins. Further, the ionizing radiation curable resin is to be applied to the base material sheet to be the final decorative sheet, but if it is allowed in the process, after applying to the surface of the shaping film,
It can also be attached to a substrate sheet. This is an effective method for finally smoothing the surface in the case of laminating a printed substrate sheet and a patterning film, which are particularly likely to involve air bubbles.

Examples of the material for the imprinting film include olefin resins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, acrylic resins such as methyl polymethacrylate, methyl polyacrylate and ethyl polymethacrylate. Resin films such as polystyrene, polystyrene, acrylonitrile / butadiene / styrene copolymer (ABS), cellulose triacetate, cellophane, polycarbonate, saponified ethylene / vinyl acetate copolymer, and polyamide can be used. If necessary, a release agent or a lubricant may be added to these films. When the ionizing radiation curable resin is used, especially when it is an ultraviolet curable resin, a transparent film that does not interfere with ultraviolet ray transmission is selected.

[0015]

According to the present invention, a transparent resin such as an ionizing radiation-curable resin and a patterning 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 patterning film. Alternatively, the reaction of the transparent resin layer is promoted by aging to cure or solidify the curable resin. However, the resin at this point includes an uncured resin having a relatively small degree of polymerization, and the interface with the shape-imparting film is not completely in close contact with the surface shape of the shape-imparting film. It has not been reproduced. This is subjected to the steps of heating, pressurizing, and cooling shown in FIG.
The resin layer is softened by heating the sheet with the heating drum 36,
The mirror surface roll 40 and the backing roll 37 are pressed to adhere to the surface of the pattern forming film, and the mirror surface smoothness of the mirror surface roll and the mirror tone of the pattern forming film are faithfully modeled on the transparent resin layer on the other side. The surface is smooth and forms an excellent specular gloss to complete the reaction and solidification. The specular gloss acts by maintaining the state of being formed on the surface of the base sheet by peeling off the shaping film in a state where the shaping component sheet is cooled and solidified.

[0016]

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

Further, the first of the heating / pressurizer 30 shown in FIG.
The shaping component sheet 21 is mounted on the delivery reel 31 and preheated by the heating drum 36 (drum temperature 150 to 170 ° C.), and then the mirror surface roll 40 (roll temperature 50 to
80 ° C, 2.8 kg / cm ² , line speed 7 to 20
m / min. ), Heating and pressurizing the cooling roll 41,
After cooling at 42, the above-mentioned film 11 for patterning was wound up from the patterning component sheet 21 as a stripped patterning 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 Dainichiseika 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 subsequent film thickness becomes 15 μm, and a polyester film having a thickness of 25 μm similar to that of Example 1 (Lumirror T- manufactured by Toray Industries, Inc.) is provided thereon. 70) was used as the imprinting film 11 and was closely adhered, and was irradiated with ultraviolet rays by the same ionizing radiation irradiation device as in Example 1 to form the patterning component sheet 22.

Next, the shaping component sheet 22 is mounted on the first feeding reel 31 of the heating / pressurizing machine 30 shown in FIG. 5, and the feeding reel 32 is prefabricated by the usual gravure printing method to form the stone pattern 13. The colored polyvinyl chloride sheet 15 having a thickness of 0.1 mm printed thereon is mounted, and the transparent polyvinyl chloride sheet 16 serving as a backer sheet having a thickness of 0.5 mm is mounted on the third feeding reel 33. Then, the imprinting film 11, the ionizing radiation curable resin 12, the base sheet 14, the pattern layer 13, the coloring sheet 15, and the backer sheet 16 are laminated in this order and pasted through the pressure bonding roll 34, and the infrared heater 35. , Heating drum 36 (drum temperature 15
After preheating at 0 to 170 ° C., it is pressure-bonded with a mirror surface 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 welding between the films and the films, the film 11 for forming was peeled off by cooling with the cooling rolls 41 and 42 to obtain the decorative sheet 2 of Example 2.

(Embodiment 3) Similar to Embodiment 2, the commercially available ionizing radiation-curable type is 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 (manufactured by Dainichiseika Co., Ltd., Seika Beam P-173)
0) is coated by gravure printing to provide an ionizing radiation curable resin layer 12 which is a transparent resin layer so that the film thickness after curing is 15 μm, and the shaped film 11 similar to that of Example 1 is provided thereon. , A 25 μm thick polyester film (Lumirror T-70 manufactured by Toray Industries, Inc.) is overlaid,
Ultraviolet rays were irradiated by the same ionizing radiation irradiation device as in Example 1 to obtain a shaped component sheet 23 shown in FIG.

Next, the shaping component sheet 23 is mounted on the feeding reel 31 of the heating / pressurizing 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 colored polyvinyl chloride sheet 15 having a thickness of 0.1 mm on which a stone pattern 13 is printed in advance by a normal gravure printing method. , Patterning film 11, ionizing radiation curable resin layer 12, base film 14, backer sheet 16, pattern layer 13, and coloring sheet 15 are laminated in this order and pasted through a pressure bonding roll 34, an infrared heater 35,
After preheating with the heating drum 36 (drum temperature 150 to 170 ° C.), the mirror surface roll 40 (roll temperature 50 to 80 ° C.,
Pressurization 2.8Kg / cm ² , line speed 7 ~ 20m /
min. ), The surface shaping effect is improved and the films are welded together, and then cooled to peel the shaping film 11 from the shaping component sheet 23, and the decorative sheet of Example 3 Configured 3.

(Example 4) As in Example 2, a commercially available ionizing radiation curable paint (manufactured by Dainichiseika Co., Ltd., on one surface of the transparent polyvinyl chloride sheet 14 having a thickness of 0.1 mm,
SEIKA BEAM P-1730) is coated by a gravure printing method to form an ionizing radiation curable resin layer 12 so that the film thickness after curing is 15 μm, and the same polyester as in Example 1 having a thickness of 25 μm. Film 1 for forming with a film (Lumirror T-70 manufactured by Toray Industries, Inc.)
1 are superposed and irradiated with ultraviolet rays by the same ionizing radiation irradiation device as in Example 1 to form the sheet 24 as shown in FIG.
Got

Next, the shaping component sheet 24 is mounted on the feeding reel 31 of the heating / pressurizing machine 30 shown in FIG. 5, and the pattern 13 of stones is printed on the feeding 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 to the shaped film 11,
The ionizing radiation curable resin layer 12, the base sheet 14, the pattern layer 13, and the coloring sheet 15 are laminated in this order on the heating drum 36.
After preheating at (drum temperature 150-170 ° C),
Mirror surface roll 40 (roll temperature 50 to 80 ° C., pressure 2.8
Kg / cm ² , line speed 7 to 20 m / min. )
After press-bonding to improve the shape-imparting effect and welding between the films, it is cooled to peel off the shape-imparting film 11 from the shape-imparting sheet 24 to obtain the decorative sheet 4 of Example 4. It was

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

The mirror-like state of the surface of the cosmetic sheet of the example of the present invention and the decorative sheet of the comparative example were compared by the values of gloss value, sharpness and surface roughness. The results of the comparison are shown in Table 1. The 60 ° gloss value is a value measured with a digital gloss meter GM-3D manufactured by Murakami Color Research Laboratory, and the sharpness is measured with a sharpness gloss meter manufactured by Japan Color Research Laboratory. The surface roughness is a value measured by a surf coder AY-31, Kosaka Laboratory Ltd.

[0026]

[Table 1]

[0027]

From the above results, the imprinting film having the mirror-like surface, which is the function of the present invention, is cured by irradiation with ionizing radiation while being in close contact with the imprinting resin layer, and is further heated with a mirror surface roll. -By applying pressure, the mirror tone of the imprinting film was completely imprinted on the ionizing radiation curable resin layer on the laminated side, and an excellent specular gloss with a smooth surface could be obtained.

[Brief description of drawings]

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

FIG. 2 is a conceptual diagram of a cross section showing a laminated structure of a decorative sheet of Example 2 of the present invention.

FIG. 3 is a conceptual view of a cross section showing a laminated structure of a decorative sheet of Example 3 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: Heating of a mirror surface roll for manufacturing the decorative sheet of the present invention
It is a figure which shows a pressurization process.

[Explanation of symbols]

 1, 2, 3, 4 Decorative sheet 11 Film for shaping 12 Transparent resin layer 13 Picture layer 14 Base sheet 15 Coloring sheet 16 Backer sheet 21, 22, 23, 24 Molding component sheet 30 Heating / pressurizing machine 31, 32 , 33 Delivery reel 34 Crimping roll 35 Infrared heater 36 Heating drum 37 Backing roll 40 Mirror surface roll 41, 42 Cooling roll 43 Product take-up roll 44 Peeled shaped film

Claims (2)

[Claims] 1. A transparent resin layer on one surface of a substrate sheet,
And a film for shaping are laminated in order, the transparent resin, in a state of being solidified at room temperature, further heated again by a mirror surface roll, after pressure processing, characterized by peeling the film for shaping A specular glossy decorative sheet. 2. A mirror glossy decorative sheet, wherein the transparent resin according to claim 1 is an ionizing radiation curable resin.