KR101000290B1 - High glossy sheet having etched metallic effect - Google Patents

Abstract

The present invention maximizes the effect of metal etching through thermal pressing by laminating a plastic sheet of metal texture on an ABS sheet capable of thermal lamination, and is free to be cut and processed in various forms, and implements groove processing and various three-dimensional patterns through vacuum molding. It relates to a high gloss sheet that can be.

High gloss sheet, etching, metal texture

Description

High glossy sheet having etched metallic effect

The present invention relates to a high gloss sheet that can be applied to business cards, plywood, labels, building materials, furniture, home appliances, etc. to have a deep and beautiful metallic gloss, and in particular, a high gloss sheet having an etched metal texture and excellent moldability It is about.

Conventional etching and corrosion metal plate is embossed pattern and pattern of the embossed through the chemical corrosion on the metal plate, such as stainless steel plate, mainly used as interior and exterior panel, but the price is very expensive, cutting and bending processing is generally difficult, various Post-processing, such as grooving, is impossible.

In order to overcome this problem, there is a sheet having a stainless steel texture in which aluminum is deposited on a plastic sheet such as PET, but it is attached only to a substrate having a very high surface smoothness such as steel or glass, and is used for furniture wood. ), Or even when the particle board (PB) is attached to the smoothness is uneven, there is a problem that the pinhole and adhesive marks are exposed as it is. It also has a UV emboss coating on the surface to give it an etched feel, but the etching expression is significantly lower than the actual etched metal.

Republic of Korea Patent Publication No. 2006-78530 is a high gloss sheet for producing a metal effect used to be laminated on the iron plate and aluminum plate, forming a hairline pattern layer on the other side of the PET film coated with an ultraviolet curable or thermosetting resin layer on one side Then, a high gloss sheet having a metal effect consisting of a primer layer, an aluminum deposition layer, a urethane-based adhesive layer, and a thermoplastic resin sheet layer sequentially formed of a polyester copolymer is disclosed.

This patent has a disadvantage in that pinholes are generated when attached to wood with low smoothness as described above, and it is difficult to express the etching effect of the actual metal.

Japanese Laid-Open Patent Publication No. 2006-341388 discloses a thermoforming laminate having a thermoplastic resin film layer, a decorative layer having a metal deposition layer or a piece of metal thin film and a binder resin, and having an ink layer having metallic gloss, and a support base resin layer. A method of forming a laminated sheet for thermoforming is disclosed, wherein the sheet is molded at a molding temperature in a specific range.

Republic of Korea Patent Publication No. 2007-25229 is based on at least one member selected from the group consisting of modified polypropylene, modified polyethylene, and modified ethylene-propylene rubber modified with unsaturated carboxylic acid or unsaturated carboxylic acid derivative, 5% Disclosed is a metallic cosmetic sheet characterized in that a modified polyolefin resin layer, a metal foil layer, and a transparent film layer having a tensile stress of 25-500 MPa at the time of elongation are formed in this order.

Korean Patent Publication No. 2007-98665 discloses a cosmetic sheet having a base material, an adhesive layer, a colored layer, and a transparent resin layer, wherein the colored layer contains a high brightness pigment and a copolymer of vinyl chloride and vinyl acetate as an binder resin and acryl. Resin is used, and the ratio is a copolymer of vinyl chloride and vinyl acetate: acrylic resin = 5: 5 to 7: 3 (weight ratio), and the transparent resin layer contains an acrylic resin containing 5 wt% or less of an ultraviolet absorber. It includes, the thickness of the transparent resin layer is 70 to 150 ㎛, the product of the content of the ultraviolet absorber (% by weight) and the thickness of the transparent resin layer (㎛) is within the range of 100 to 250 (wt% · ㎛), transparent water A cosmetic sheet is disclosed in which the ultraviolet ray transmittance of the strata is 8% or less (380 nm).

Korean Utility Model Registration No. 421433 includes a high gloss sheet layer composed of a vinyl chloride base layer, an adhesive layer disposed on the vinyl chloride base layer, and a polyethylene terephthalate layer laminated on the adhesive layer; An adhesive layer comprising an aluminum paste and coated on a high gloss sheet layer; And a release layer laminated on the pressure-sensitive adhesive layer and including a release layer that can be easily peeled off during processing with glass.

However, the prior arts differ from the present invention in the laminated structure and are laminated using an adhesive, and in particular, the etching effect is not disclosed.

It is an object of the present invention to realize the texture as a plastic sheet instead of a metal plate such as stainless through the conventional etching, and to freely express various shapes, sizes, and yin and yang design, high gloss that can be applied to interior materials such as furniture. To provide a sheet.

In order to achieve the above object, the present invention is a UV curable or thermosetting resin layer, polyethylene terephthalate (PET) film, a primer layer made of a polyester copolymer, aluminum deposition layer, urethane adhesive layer, thermoplastic resin sheet layer from above Provided is a high gloss sheet in which acrylonitrile butadiene styrene (ABS) sheet is laminated on the bottom of the made metal texture sheet.

The high gloss sheet of the present invention is characterized in that an etching effect is given to the surface, and the etching effect is represented by the metal deposition layer and the emboss, and the high gloss surface applied to the metal deposition layer using a mold composed of a mirror surface layer and the emboss layer. (Embodiment 70% to 100% glossiness by ASTM D 2457) and a matte surface (gloss 0 to 20%).

In addition, the present invention from the above UV-curable or thermosetting resin layer, polyethylene terephthalate (PET) film, a primer layer made of a polyester copolymer, an aluminum deposition layer, a urethane-based adhesive layer, a metal sheet made of a thermoplastic resin sheet layer After manufacturing, the metal sheet is laminated on acrylonitrile butadiene styrene (ABS) sheet, and the etching embossing mold is placed on the sheet, and then the thermal lamination is performed without adhesive, thereby simultaneously giving an etching effect. It provides a manufacturing method.

In the present invention, the thermal lamination is carried out in a batch manner by pressing at a pressure of 100 to 150 kgf / cm 2 using a multi-stage hot press at a temperature of 140 to 180 ° C., or when extruding an ABS sheet, The texture sheet may be performed in a manner of continuously laminating using a roll press.

It can overcome the poor workability of the metal while maintaining the texture of the existing etched metal, and can exhibit realistic etching effect due to the excellent thermal formability compared to the conventional metal texture sheet, even if attached to the wood with low smoothness of the substrate It can maintain the smoothness and vacuum forming of various curved surfaces and grooves.

In addition, when manufacturing the sheet of the present invention can be laminated without an adhesive through the thermal pressure, by applying an embossing mold when the lamination can be implemented at the same time the etching effect on the surface.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of a high gloss sheet according to the present invention, wherein the sheet of the present invention is composed of a metal sheet 10 and an ABS sheet 20 laminated thereunder.

2 is a cross-sectional view of the metal texture sheet according to the present invention, the metal texture sheet 10 is UV / thermosetting resin layer 11, PET film 12, primer layer 13, metal deposition layer 14 from above ), An adhesive layer 15, and a thermoplastic resin sheet layer 16.

In the metal texture sheet 10 of the present invention, in order to solve the disadvantage that the metal deposition layer 14 is peeled off by weakening the adhesion with the PET film 12, the metal deposition layer 14 is deposited on the PET film 12. Before applying the adhesion reinforcing primer layer 13 on the surface of the PET film 12, the metal deposition layer 14 is a metal sheet with an improved adhesion that can be firmly bonded and fixed.

The metal texture sheet 10 forms a PET film 12 having a heat or ultraviolet curable resin layer 11 formed on one surface thereof and a hairline pattern formed on the other surface thereof, and having a primer layer under the hairline pattern. (13) and the metal deposition layer 14 are sequentially formed, coated with a urethane adhesive 15, dry lamination, and manufactured by laminating the thermoplastic resin sheet layer 16.

Before forming the UV-curable resin layer 11 or after forming the hairline on the PET film 12, it is also possible to further laminate a printed pattern layer including various pattern layers (not shown).

The lower thermoplastic resin sheet layer 16 is preferably a polyvinyl chloride film in terms of flexibility, transparency, heat resistance, and the like, but is not particularly limited as long as it is a normal plastic film in addition to polyvinyl chloride. For example, a polyolefin film including a polypropylene film, a polystyrene film, and a polyester film such as polyethylene terephthalate or polybutylene terephthalate, or an engineering plastic film such as polyimide or polysulfone, etc. can be selected. Using a material having a thickness of 50 to 1000 µm may satisfy mechanical properties such as strength and flexibility.

The PET film 12 used for the upper substrate has a clear metallic effect by using a high transparency PET film having a haze of 1 to 10%, a light transmittance of 90% or more, a gloss of 150% or more, and a thickness of 20 to 50 μm. can do.

By forming a hairline pattern on one surface of the PET film 12 to have a beautiful metallic feeling, the method of forming the hairline pattern is a conventional hairline pattern generating method, uniformly attaching an abrasive to a nonwoven fabric and then to the film surface A variety of methods can be used, such as polishing and forming the surface by sandpaper or the like, but the method is not particularly limited.

Hairline fringes usually have a depth of 0.1 to 1.0 mu m or less and an average width of 5 mu m or less can be formed continuously on the surface, which may further impart a metal-like effect. If it is out of the above range, the metal gloss desired in the present invention cannot be sufficiently obtained, so it is better to adjust the range within the above range.

Before depositing a metal layer such as aluminum on one surface of the PET film 12 having the hairline formed thereon, a primer layer 13 is formed to enhance the adhesion between the PET film 12 and the metal deposition layer 14. The layer 13 is made of a polypropylene comprising 20 to 30 parts by weight of adipic acid, 10 to 20 parts by weight of terephthalic acid, 10 to 15 parts by weight of isophthalic acid, 25 to 30 parts by weight of ethylene glycol, and 20 to 25 parts by weight of neopentyl glycol. It is characterized by using an ester copolymer.

The polyester copolymer may be prepared by conventional bulk polymerization or solution polymerization or interfacial polymerization. After preparing the polyester copolymer, the polyester copolymer is dissolved in a solvent and the solution is coated with a conventional coating method, for example, a gravure coating method, a bar. Coating is performed by a coating method, a flow coating method, or the like, and preferably, a gravure coating method is preferable.

The primer layer 13 is coated with a solution in which a polyester copolymer is dissolved in 30 to 60 parts by weight of a solvent such as toluene, xylene, ketones containing methyl ethyl ketone, and halogenated hydrocarbons such as chloroform. Coating thickness is applied in 0.1 to 1.0 ㎛, this thickness can be adjusted by adjusting the viscosity of the solution, so further description is omitted. As monomers of the polymer constituting the primer layer 13, 20 to 30 parts by weight of adipic acid, 10 to 20 parts by weight of terephthalic acid, 10 to 15 parts by weight of isophthalic acid, 25 to 30 parts by weight of ethylene glycol, and 20 to 25 neopentyl glycol When using a polyester copolymer prepared by including a weight part, it is possible to obtain a sheet having the best adhesion between the PET film 12 and the metal deposition layer 14.

The metal deposition layer 14 usually uses an aluminum film. The aluminum deposition film is deposited using a conventional vacuum deposition method, and vacuum deposition is performed at a temperature of 300 to 1800 ° C. in a vacuum of 10 ⁻² to 10 ⁻⁶ Torr to form a deposition film having a thickness of 200 to 500 kPa.

The opposite surface on which the hairline of the PET film 12 is formed and the vacuum deposition film is sequentially formed forms the thermosetting or ultraviolet curing resin layer 11 so as to protect the surface while maintaining the transparency of the surface. The UV curable resin can be used as long as it is a conventional UV curable composition composed of an acrylic monomer, a photoinitiator by ultraviolet light and a solvent, and many techniques are known in the art, and the components have excellent light transmittance by curing. As long as it may be anything, the present invention does not specifically limit it. In the present invention, a thermosetting resin may also be used. For example, a transparent urethane curable resin or an epoxy resin may be used, and any polymer capable of thermal polymerization such as acrylic or methacrylic group, vinyl group, allyl group, etc. used during UV curing may be used. Can be. Dyestuffs and pigments may be added to the ultraviolet curable resin composition or the thermosetting resin composition to produce various colors.

The adhesive 15 for bonding the upper substrate and the lower substrate is 20 to 30 parts by weight of isophthalic acid, 25 to 30 parts by weight of adipic acid, 30 to 40 parts by weight of neopentyl glycol, 5 to 15 parts by weight of ethylene glycol, 1,6 hexane Polyester urethane resin consisting of 1 to 10 parts by weight of diol, 1 to 10 parts by weight of toluene diisocyanate, a curing agent consisting of 65 to 75 parts by weight of toluene diisocyanate, 15 to 25 parts by weight of trimethyllopropane, and 50 to 100 parts by weight of a solvent. It is preferable to apply the composed urethane two-component adhesive after applying 5 to 15 µm in terms of flexibility, impact resistance and workability of the film. The urethane adhesive can maintain transparency as it is used, thereby obtaining a beautiful effect such as the metal of the final sheet.

ABS sheet 20 is produced by extruding ABS resin, the thickness is preferably 0.5 to 3 mm. ABS sheet has good physical properties such as elongation, which is advantageous to realize a fine etching embossed pattern.

In the high gloss sheet of the present invention, in laminating the metal texture sheet 10 to the ABS sheet 20, the sheet is embossed on the surface by thermal lamination using an emboss mold.

In an implementation method, the metal texture sheet 10 is laminated on the ABS sheet 20 by laminating the etching embossing mold plate thereon. The laminated sheet may be manufactured in a batch manner by pressing the sheet at a pressure of 100 to 150 kgf / cm 2 using a multi-stage hot press at a temperature of 140 to 180 ° C. In addition, when extruding the ABS sheet 20, the metal texture sheet 10 may be manufactured by continuously laminating using a roll press.

The high gloss sheet of the present invention is a structure in which the ABS sheet 20 excellent in formability of about 0.5 to 3 mm in thickness is thermally laminated to the metal texture sheet 10 as an underlayer, and has an etching effect that cannot be exhibited in the existing metal texture sheet. Various surface effects of can be implemented by hot press molding and vacuum molding. Therefore, it is not only laminated on the existing iron plate and aluminum plate, but also can be laminated on various wooden boards such as MDF and PB where the smoothness of the substrate surface is not good, and thus it can be applied to furniture surface materials such as kitchen furniture and built-in cabinets and various interior surface materials. .

Even when the existing high gloss metal texture sheet is attached to a wooden board such as MDF, or adhered to wood with a high degree of smoothness by undercoating, an orange peel phenomenon may occur. This is because of the high gloss treatment, the adhesive marks on the back, small foreign matters, and incomplete smoothness appear on the upper layer.

When the sheet of the high gloss metal texture sheet 10 and the ABS sheet 20 laminated according to the present invention is applied, the high gloss effect of the upper layer is excellent and the orange peel phenomenon does not occur even if the smoothness of the substrate is not good. In addition, by laminating the metal texture sheet 10 and the ABS sheet 20 without an adhesive through thermal lamination, the marks due to the adhesive do not appear.

In the present invention, the etching effect is represented by the combination of the metal deposition layer 14 and the emboss, and specifically, when hot pressing is performed using a mold composed of a mirror surface layer and an emboss layer, a high gloss surface (ASTM D 2457) 70 to 100%) and the matt surface (0 to 20% gloss) can be implemented at the same time to exhibit the etching effect of the metal as it is. The embossing may be applied to both the metal sheet 10 and the ABS sheet 20, or may be applied only to the metal sheet 10, or may be applied only to a portion of the layer.

[Example]

47% by weight of epoxy acrylate (SKUCBEbecryl 3700), 20% by weight of pentaerythritol triacrylate, on the surface of a highly transparent PET film having a haze of 6%, a light transmittance of 92%, a gloss of 160%, and a thickness of 25 μm. UV light consisting of 15% by weight trimethylolpropanetriacrylate, 12% by weight 1,6-nucleodiol diacrylate, 5% by weight photoinitiator (Ciba-Geigy D1173) and 1% by weight leveling agent (SK-UCB Ebecryl 350) The curable coating composition was applied by bar coating to 6 µm, irradiated with ultraviolet rays, and cured. A hairline pattern having an average depth of 0.24 µm and a width of 3.2 µm was formed on the other surface. A toluene solution containing a polyester primer prepared by polymerizing 25 parts by weight of adipic acid, 15 parts by weight of terephthalic acid, 13 parts by weight of isophthalic acid, 27 parts by weight of ethylene glycol, and 22 parts by weight of neopentyl glycol was coated on the surface of the hairline. After drying, a primer layer having a thickness of 0.7 μm was formed, and after sufficiently drying, an aluminum vacuum deposition film having an average thickness of 400 kV was formed by vacuum depositing at 10 ^-4 Torr at 1420 ° C to prepare an upper base layer. The polyurethane two-component adhesive was applied to the lower portion of the upper substrate layer to a thickness of 12 μm, and then the lower substrate of the 105 μm thick polyvinyl chloride film was dry laminated with the upper substrate to prepare a metal texture sheet.

After laminating the metal texture sheet on a 2 mm thick ABS sheet and placing an etching die plate thereon, the laminated sheet was laminated at 120 kgf / cm 2 using a multi-stage hot press at 160 ° C. A high gloss sheet having an etching effect according to the present invention was prepared by pressurizing with pressure and thermal lamination.

1 is a cross-sectional view of a high gloss sheet according to the present invention.

2 is a cross-sectional view of the metal texture sheet according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: metal texture sheet

20: ABS sheet

11: UV / thermosetting resin layer

12: PET film

13: primer layer

14: metal deposition layer

15: adhesive layer

16: thermoplastic resin sheet layer

Claims (6)

Acrylonitrile at the bottom of the metallic sheet consisting of an ultraviolet curable or thermosetting resin layer, a polyethylene terephthalate (PET) film, a primer layer made of a polyester copolymer, an aluminum deposition layer, a urethane-based adhesive layer, and a thermoplastic resin sheet layer from above. High gloss sheet laminated with reel butadiene styrene (ABS) sheet. The high gloss sheet according to claim 1, wherein an etching effect is imparted to the surface. 3. The high gloss surface (70 to 100% glossiness of ASTM D 2457) according to claim 2, wherein the etching effect is exhibited by the metal deposition layer and the embossing, and is applied to the metal deposition layer by using a mold composed of the mirror surface layer and the emboss layer. ) And a matte surface (high glossiness 0 to 20%) is characterized by embossed sheet. After preparing a metallic sheet consisting of an ultraviolet curable or thermosetting resin layer, a polyethylene terephthalate (PET) film, a primer layer made of a polyester copolymer, an aluminum deposition layer, a urethane-based adhesive layer, a thermoplastic resin sheet layer, A method of manufacturing a high gloss sheet, comprising: laminating a metal texture sheet on an acrylonitrile butadiene styrene (ABS) sheet, placing an etching embossed mold plate thereon, and thermally laminating without an adhesive to impart an etching effect. The high gloss sheet according to claim 4, wherein the thermal paper is pressurized to a pressure of 100 to 150 kgf / cm 2 using a multi-stage hot press at a temperature of 140 to 180 ° C. Manufacturing method. The method of manufacturing a high gloss sheet according to claim 4, wherein the thermal lamination is performed by continuously laminating the metal texture sheet using a roll press when extruding the ABS sheet.

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