JP2005254572A - Insulating part metallic luster sheet and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an insulating part metallic luster sheet which is free from a flaw or the like in an insulating metal thin film layer, and a manufacturing method thereof. <P>SOLUTION: At least a solvent-soluble pattern layer 5 is formed partially on a base sheet 2 and then the insulating metal thin film layer 7 having metallic luster is formed overall. An insulating protective layer 8 is formed overall subsequently and the solvent-soluble pattern layer 5 is removed by solvent washing, together with the insulating metal thin film layer 7 and the insulating protective layer 8 formed on the layer 5. Thereby a pattern having the metallic luster is formed in the area wherein the solvent-soluble pattern layer 5 is not formed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an insulating partial metallic glossy sheet that does not cause scratches on an insulating metal thin film layer and a method for producing the same.

  There is a transfer method as a method for decorating a plastic molded article or the like with a metallic luster. The transfer method uses a transfer material in which a transfer layer composed of a release layer, a metallic thin film layer having a metallic luster, an adhesive layer, etc. is formed on a base sheet, and is heated and pressed to bring the transfer layer into close contact with the transfer object. Thereafter, the base sheet is peeled off, and only the transfer layer is transferred to the surface of the transfer object to decorate. In addition, when the material to be transferred is a resin molded product, there is a simultaneous molding transfer method as a method for performing the transfer method more rationally. The molding simultaneous transfer method is a method in which a transfer material is sandwiched in a molding die, a resin is injected and filled in the die, and cooled to obtain a resin molded product. In this method, the substrate sheet is peeled off and the transfer layer is transferred to the surface of the transfer object to decorate.

  It is also possible to decorate plastic molded products etc. with metallic luster by using an insert material in which a metallic thin film layer having metallic luster or an adhesive layer is formed on a base sheet instead of a transfer material. It is.

Here, when the plastic molded product is used as a casing for information communication equipment such as mobile phones, information equipment inside automobiles, home appliances, etc., as a metal thin film layer to prevent electrostatic breakdown or radio wave interference In addition, those having insulative properties using indium, tin or the like are used (for example, see Patent Documents 1 and 2).
Japanese Patent Publication No. 3-25353 Japanese Patent Laid-Open No. 10-324093

  Here, in order to perform various expressions in terms of design, if you want the metal thin film layer to be partially formed, print the solvent soluble pattern layer in advance with water-soluble ink and then form the metal thin film layer entirely. Then, it is conceivable that a solvent-soluble pattern layer formed with water-soluble ink or the like is combined with a metal thin film formed on the solvent-soluble pattern layer and then washed with a solvent to remove the solvent, thereby forming a desired pattern.

  However, in such a method, friction is applied to the metal design surface portion by the washing brush at the time of washing with water, or the roll is brought into contact with the surface of the metal thin film by being conveyed between a large number of rolls when the sheet is moved in the washing process. In addition, there is a problem in that a soft metal such as indium or tin with an insulating specification having a metallic luster causes a defect such as a scratch on the metal design portion.

  Accordingly, an object of the present invention is to provide an insulating partial metal glossy sheet that eliminates the above-described problems and does not cause scratches on the insulating metal thin film layer and a method for producing the same.

  In order to achieve the above object, the insulating partial metallic glossy sheet and the manufacturing method thereof according to the present invention are configured as follows.

  According to the first aspect of the present invention, at least a solvent-soluble pattern layer is partially formed on a base sheet, and then an insulating metal thin film layer having a metallic luster is formed entirely, and then an insulating protective layer is formed. Metal is formed in the region where the solvent-soluble pattern layer was not formed by solvent washing and removing the solvent-soluble pattern layer together with the insulating metal thin film layer and the insulating protective layer formed on the solvent-soluble pattern layer. Provided is a method of manufacturing an insulating partial metal glossy sheet configured to form a glossy pattern.

  According to the second aspect of the present invention, the insulative metal thin film is made of the first or second metal or alloy selected from the group consisting of Sn, In, Ag, Sb, Zn, Pb, and Bi. The manufacturing method of the insulating partial metallic glossy sheet as described in the embodiment is provided.

  According to the 3rd aspect of this invention, the manufacturing method of the insulating partial metal glossy sheet as described in the 1st-2nd aspect in which an insulating protective layer consists of a metal oxide is provided.

  According to the 4th aspect of this invention, the manufacturing method of the insulating partial metal glossy sheet as described in an insert material or a transfer material 1st-3rd aspect is provided.

  According to the fifth aspect of the present invention, the insulating partial metal glossy sheet is configured such that the insulating metal thin film layer having the metallic luster and the insulating protective layer are formed in the same pattern at least on the base sheet. I will provide a.

  According to the sixth aspect of the present invention, the insulating metal thin film is composed of one or more metals or alloys selected from the group consisting of Sn, In, Ag, Sb, Zn, Pb and Bi. The insulating partial metal glossy sheet according to the embodiment is provided.

  According to the 7th aspect of this invention, the insulating partial metal glossy sheet as described in the 5th-6th aspect in which an insulating protective layer consists of a metal oxide is provided.

  According to the 8th aspect of this invention, the insulating partial metal glossy sheet as described in the aspect of insert material or a transfer material 5th-7th is provided.

  In the method for producing an insulating partial metal glossy sheet of the present invention, at least a solvent-soluble pattern layer is partially formed on a base sheet, and then an insulating metal thin film layer having a metallic gloss is formed over the entire surface and then insulated. The solvent-soluble pattern layer is not formed by cleaning the solvent-soluble pattern layer together with the insulating metal thin film layer and the insulating protection layer formed on the solvent-soluble pattern layer, and then removing the solvent-soluble pattern layer with a solvent. Since the pattern having the metallic luster is formed in the region, the insulating metal thin film layer is not damaged.

  Since the insulating partial metal glossy sheet of the present invention is configured such that the insulating metal thin film layer having the metallic luster and the insulating protective layer are formed at least in the same pattern on the base sheet in order, the insulating metal The thin film layer is not damaged.

  Embodiments of the present invention will be described in detail with reference to the drawings.

  1 and 4 to 6 are sectional views showing an embodiment of the method for producing an insulating partial metallic glossy sheet of the present invention. 2 to 3 are sectional views showing an embodiment of the insulating partial metallic glossy sheet of the present invention. In the figure, 1 is an insulating partially metallic glossy sheet, 2 is a base sheet, 3 is a release layer, 4 is a design layer, 5 is a solvent-soluble pattern layer, 6 is an anchor layer, 7 is an insulating metal thin film layer, and 8 is insulating. The protective layer 9 is an adhesive layer. Note that the thickness ratio of each component in the drawing does not reflect the actual thickness ratio of each component.

  In the method for producing an insulating partial metallic glossy sheet 1 of the present invention, at least a solvent-soluble pattern layer 5 is partially formed on a base sheet 2, and then an insulating metallic thin film layer 7 having metallic gloss is formed on the entire surface. Next, the insulating protective layer 8 is formed over the entire surface, and the solvent-soluble pattern layer 5 is then removed by washing with the insulating metal thin film layer 7 and the insulating protective layer 8 formed on the solvent-soluble pattern layer 5. This is a method of forming a pattern having metallic luster in a region where the solvent-soluble pattern layer 5 is not formed (see FIGS. 1 and 4 to 6).

  As the base sheet 2, a single-layer resin sheet selected from polyester resins, polycarbonate resins, polyamide resins, acrylic resins, polypropylene resins, polyethylene resins, polyvinyl chloride resins, acrylonitrile butadiene styrene resins, or A laminated sheet or copolymer sheet made of two or more kinds of resins selected from the resins described above may be used.

  When the insulating partial metallic glossy sheet 1 is an insert material, it is preferable to use a translucent sheet. In addition, when the insulating partial metallic glossy sheet 1 is a transfer material, the base sheet 2 does not remain on the surface of the molded product, so that it is not necessary to have translucency.

  In addition, an easy-adhesion layer 9 (not shown) may be formed on the base sheet 2 in order to increase the adhesion of each layer in the printing process.

  When the insulating partial metallic glossy sheet 1 is a transfer material, a release layer (not shown) is provided before the transfer layer is provided on the base sheet 2 in order to improve the peelability of the transfer layer from the base sheet 2. ) May be formed entirely. The release layer is released from the transfer layer together with the base sheet 2 when the base sheet 2 is peeled off after transfer or after simultaneous molding transfer. As the material of the release layer, melamine resin release agent, silicone resin release agent, fluororesin release agent, cellulose derivative release agent, urea resin release agent, polyolefin resin release agent, Paraffin-type release agents and composite release agents thereof can be used. As a method for forming the release layer, there are a coating method such as a roll coating method and a spray coating method, a printing method such as a gravure printing method and a screen printing method.

  Moreover, when the insulating partial metallic glossy sheet 1 is a transfer material, the peeling layer 3 may be formed (see FIGS. 5A and 6A). The release layer 3 is formed entirely or partially on the base sheet 2 or the release layer. The release layer 3 is a layer that peels from the base sheet 2 or the release layer and becomes the outermost surface of the transfer object when the base sheet 2 is peeled after transfer or after simultaneous molding transfer. The release layer 3 can be made of acrylic resin, polyester resin, polyvinyl chloride resin, cellulose resin, rubber resin, polyurethane resin, polyvinyl acetate resin, or vinyl chloride-vinyl acetate copolymer. Copolymers such as system resins and ethylene-vinyl acetate copolymer resins may be used. When the release layer 3 requires hardness, a photo-curing resin such as an ultraviolet curable resin, a radiation curable resin such as an electron beam curable resin, or a thermosetting resin may be selected and used. The release layer 3 may be colored or uncolored. Examples of the method for forming the release layer 3 include a coating method such as a gravure coating method, a roll coating method, and a comma coating method, and a printing method such as a gravure printing method and a screen printing method.

  At least the solvent-soluble pattern layer 5 is formed on the base sheet 2 (see FIGS. 1A, 4C, 5B, and 6D). An insulating metal thin film layer 7 and an insulating protective layer 8 are entirely formed on the partially formed solvent-soluble pattern layer 5, and the solvent-soluble pattern layer 5 is removed with a solvent such as water, A pattern having metallic luster is formed in a region where the solvent-soluble pattern layer 5 is not formed. The solvent-soluble pattern layer 5 is formed by using a printing method such as a gravure printing method, a flexographic printing method, or a screen printing method using an ink having a water-soluble resin typified by polyvinyl alcohol, starch, alginide, epoxy, polyurethane, or the like as a binder. It is good to form.

  Moreover, you may form the symbol layer 4 as needed (refer FIG. 4A, FIG. 4G, FIG. 6B, FIG. 6H). The pattern layer 4 is a layer formed in order to exhibit various decorative effects together with a pattern having a metallic luster formed by the insulating metal thin film layer 7. The pattern layer 4 is made of vinyl chloride-vinyl acetate resin, polyamide resin, chlorinated polypropylene resin, epoxy resin, cyanoacrylate resin, polyester resin, acrylic resin, polyurethane resin, polyvinyl acetal resin, polyester urethane resin. Ordinary printing methods such as gravure printing, screen printing, offset printing, etc. using ink containing resin such as cellulose ester resin, argide resin as binder and metal pigment, inorganic pigment, dye, etc. as colorant It is good to form using etc. If the pattern layer 4 is formed so as to be located under the solvent-soluble pattern layer 5, it is not removed by the subsequent water washing step, and conversely, it is located on the solvent-soluble pattern layer 5. If formed, it is removed and patterned together with the insulating metal thin film layer 7 in a later water washing step.

  Next, an insulating metal thin film layer 7 is formed over the entire surface (see FIGS. 1B, 4D, 5C, and 6E). The insulating metal thin film layer 7 is formed by a vacuum deposition method, a sputtering method, an ion plating method, or the like. In order to have metallic luster and insulation, one or more metals or alloys selected from the group consisting of Sn, In, Ag, Sb, Zn, Pb, Bi are used, for example, fine It is good to form it adjusting to conditions which become striped vapor deposition.

  Next, an insulating protective layer 8 is formed (see FIGS. 1C, 4E, 5D, and 6F). As the insulating protective layer 8, an insulating metal oxide such as aluminum, silicon, zirconium, tantalum, or titanium may be used. A thin film may be formed using such a metal oxide by a vacuum evaporation method, a sputtering method, an ion plating method, or the like. Further, when the insulating partial metallic glossy sheet 1 is an insert material and an adhesive layer 9 to be described later is formed on the surface of the base sheet 2 where the insulating metal thin film layer 7 is not formed, the insulating protective layer 8 By making the transparent, the metallic luster of the insulating metal thin film layer 7 can be observed (see FIG. 3).

  Moreover, when providing the insulating metal thin film layer 7, the insulating protective layer 8, etc. as needed, in order to improve the adhesiveness of these layers, you may provide the anchor layer 6 (FIG. 4B, figure). 6C). As the material of the anchor layer 6, two-component cured urethane resin, thermosetting urethane resin, melamine resin, cellulose ester resin, chlorine-containing rubber resin, chlorine-containing vinyl resin, acrylic resin, epoxy resin, vinyl A copolymer resin may be used. Examples of the method for forming the anchor layer 6 include a coating method such as a gravure coating method, a roll coating method, and a comma coating method, a printing method such as a gravure printing method, and a screen printing method.

  Next, solvent cleaning is performed (see FIGS. 1D, 4F, 5E, and 6G). In order to perform solvent cleaning, the surface on which the insulating protective layer 8 is formed is softly brushed while the sheet on which the solvent-soluble pattern layer 5 is formed is immersed in cold water or a hot water tank, or cold water or warm water shower water is discharged. The solvent-soluble pattern layer 5 may be completely removed together with the insulating metal thin film layer 7 and the insulating protective layer 8 formed on the solvent-soluble pattern layer 5 by friction cleaning. At the time of washing with water, the insulating metal thin film layer 7 is physically protected by the insulating protective layer 8, so that the insulating metal thin film layer 7 is hardly damaged even when the washing brush or the transport roll comes into contact. Next, water adhering to the sheet is removed by hot air drying.

  Next, an adhesive layer 9 may be formed as necessary (see FIGS. 2, 3, 4G, 5F, and 6H). The adhesive layer 9 adheres each of the above layers to the surface of the plastic molded product. As the adhesive layer 9, a heat-sensitive or pressure-sensitive resin suitable for the material of the adherend is appropriately used. For example, when the material of the adherend is an acrylic resin, an acrylic resin may be used. In addition, when the material of the adherend is polyphenylene oxide / polystyrene resin, polycarbonate resin, styrene copolymer resin, polystyrene blend resin, acrylic resin, polystyrene resin, polyamide having affinity with these resins A series resin or the like may be used. Furthermore, when the material of the adherend is a polypropylene resin, a chlorinated polyolefin resin, a chlorinated ethylene-vinyl acetate copolymer resin, a cyclized rubber, or a coumarone indene resin can be used. Examples of the method for forming the adhesive layer 9 include a coating method such as a gravure coating method, a roll coating method, and a comma coating method, a printing method such as a gravure printing method, and a screen printing method.

  As a method of obtaining a partially metallic glossy molded article using the insulating partial metallic glossy sheet 1 having the above-described configuration, the insulating partial metallic glossy sheet 1 is installed in a mold having a cavity, and a molten resin is contained in the mold. There is an insert method in which a molded product in which the insulating partial metallic glossy sheet 1 and the molten resin are integrated is obtained. Specifically, it may be performed as follows.

  First, the insulating partial metallic glossy sheet 1 is installed in the mold. At this time, the fixed position of the insulating partial metallic glossy sheet 1 may be aligned using a phototube sensor or the like so that the design of the insulating partial metallic glossy sheet 1 and the mold shape are aligned.

  Next, the insulating partial metallic glossy sheet 1 is fixed in the mold by appropriately performing heating and suction. Further, in order to heat the insulating partial metallic glossy sheet 1 so as to be easily along the cavity surface, the insulating partial metallic glossy sheet 1 may be heated by heating means such as an infrared heater. Further, the insulating partial metallic glossy sheet 1 may be formed by vacuum forming or pressure forming along the cavity surface.

  Next, the mold is closed, the molding resin is injected into the mold, and the insulating partial metallic glossy sheet 1 and the molding resin are integrated.

  Molding resins include acrylic resins, acrylonitrile styrene resins, styrene resins, polycarbonate resins, acrylonitrile butadiene styrene resins, silicon resins, nylon resins, urethane resins, thermoplastic elastomer resins, polyethylene resins, A polypropylene resin or the like may be used.

  After the molding resin is solidified, the mold is opened, and the resin molded product to which the insulating partial metal glossy sheet 1 is integrated and bonded is taken out to obtain a partial metal gloss molded product.

  Further, when the insulating partial metallic gloss sheet 1 is a transfer material, a partial metallic gloss molded product can be obtained as follows.

  First, the adhesive layer 9 side of the transfer material is brought into close contact with the surface of the transfer object. Examples of materials to be transferred include acrylic resins, acrylonitrile styrene resins, styrene resins, polycarbonate resins, acrylonitrile butadiene styrene resins, silicon resins, nylon resins, urethane resins, thermoplastic elastomer resins, polyethylene resins. A plastic molded product made of polypropylene resin or the like may be used.

  Next, using a transfer machine such as a roll transfer machine or an up-down transfer machine equipped with a heat-resistant rubber-like elastic body such as silicon rubber, a heat-resistant rubber-like condition set at a temperature of about 80 to 260 ° C. and a pressure of about 490 to 1960 Pa. Heat and pressure are applied from the substrate sheet 2 side of the transfer material through the elastic body. By doing so, the adhesive layer 9 adheres to the surface of the transfer object. Finally, when the base sheet 2 is peeled off after cooling, peeling occurs at the boundary surface between the base sheet 2 and the release layer 3, and transfer is completed. Further, when a release layer is provided on the base sheet 2, when the base sheet 2 is peeled off, peeling occurs at the boundary surface between the release layer and the release layer 3 and transfer is completed.

  Next, a method for decorating the surface of a resin molded product, which is a transfer object, using the above-described transfer material and utilizing a simultaneous molding transfer method by injection molding will be described.

  First, a transfer material is fed into a molding die composed of a movable die and a fixed die. At that time, a single sheet of transfer material may be fed one by one, or a necessary part of a long transfer material may be intermittently fed. When a long transfer material is used, it is preferable to use a feeding device having a positioning mechanism so that the registration of the pattern layer 4 of the transfer material and the molding die coincide. In addition, when the transfer material is intermittently fed, if the transfer material is fixed by the movable mold and the fixed mold after the position of the transfer material is detected by the sensor, the transfer material can always be fixed at the same position. This is convenient because the positional shift of the symbol layer 4 does not occur.

  After closing the molding die, the molten resin is injected and filled from the gate into the die, and at the same time as the transfer object is formed, the transfer material is adhered to the surface. As the molten resin, acrylic resin, acrylonitrile styrene resin, styrene resin, polycarbonate resin, acrylonitrile butadiene styrene resin, silicon resin, nylon resin, urethane resin, thermoplastic elastomer resin, polyethylene resin, A polypropylene resin or the like may be used.

  After the resin molded product, which is the transfer target, is cooled, the molding die is opened and the resin molded product is taken out. Finally, a partially metallic glossy molded product can be obtained by peeling off the base sheet 2.

  An insert material, which is an insulating partial metal glossy sheet, was produced as follows, and an AV device casing was produced using the insert material.

  A transparent vapor deposition anchor using a transparent polyethylene terephthalate film having a thickness of 100 μm as a base sheet, a pattern layer made of an acrylic-vinyl resin thereon, and a translucent transparent ink made of a two-component curable urethane urethane resin. A layer, and then a solvent-soluble pattern layer with water-soluble ink were sequentially formed by a gravure printing method.

  Next, after heat treatment at 170 ° C. × 30 seconds / m, an insulating metal thin film layer made of a tin metal layer having an insulation specification having a light transmittance of 7 to 9% is formed on the entire surface by vacuum deposition, and then a thickness of 300 An insulating protective layer made of an alumina metal layer of ± 50 mm was formed on the entire surface.

  Next, the solvent-soluble pattern layer was removed by washing with the insulating metal thin film layer and the insulating protective layer formed thereon.

  Subsequently, a pattern layer made of a two-component curable polyester urethane resin and a transparent adhesive layer made of a polycarbonate resin were laminated on the entire surface by a screen printing method.

  The insulating metal thin film layer of the insert material thus obtained was free from scratches and had a beautiful pattern.

  This was cut into an appropriate size by a Thomson die, and then primary molded into a desired shape by a die press method to provide a positioning guide hole.

  This insulating partial metallic glossy sheet is placed so that the adhesive layer is positioned at the gate portion, and polycarbonate resin (Taflon (registered trademark) IR1700 manufactured by Idemitsu Petrochemical Co., Ltd.) is melted, injected, cooled and individualized for insulation. An insulative partial metallic glossy molded product was obtained in which the insulating partial metallic glossy sheet was integrated on the surface of the resin member. The use of this molded product is an AV equipment casing.

  Since the insulating metallic thin film layer having a metallic luster formed on the surface of the molded product has an insulation specification, phenomena such as appearance changes due to electrostatic breakdown and damage to internal circuits were not observed.

  A transfer material, which is an insulating partial metal glossy sheet, was produced as follows, and an AV device casing was produced using the transfer material.

  A polyethylene terephthalate film having a thickness of 50 μm is used as a base sheet, a release layer made of an acrylic resin thereon, a pattern layer made of ink made of an acrylic-vinyl resin, and a translucent made of a two-component curable urethane resin. A transparent vapor-deposited anchor layer using a transparent ink, and then a solvent-soluble pattern layer using a water-soluble ink were sequentially formed by a gravure printing method.

  Next, after heat treatment at 170 ° C. × 30 seconds / m, an insulating metal thin film layer made of a tin metal layer having an insulation specification having a light transmittance of 7 to 9% is formed on the entire surface by vacuum deposition, and then a thickness of 300 An insulating protective layer made of an alumina metal layer of ± 50 mm was formed on the entire surface.

  Next, the solvent-soluble pattern layer was removed by washing with the insulating metal thin film layer and the insulating protective layer formed thereon.

  Next, an anchor layer and an adhesive layer made of vinyl chloride-vinyl acetate resin were sequentially laminated on the entire surface by a gravure printing method to obtain a transfer material.

  The insulating metal thin film layer of the transfer material thus obtained was free from scratches and had a beautiful pattern.

  This transfer material is placed so that the adhesive layer is positioned at the gate portion, ABS resin (Toyolac (registered trademark) 920 manufactured by Toray Industries, Inc.) is melted, injected, cooled, and individualized to produce an insulating partially metallic glossy sheet. After being integrated on the surface of the resin member, the base sheet was peeled off from the surface of the molded product to obtain an insulating partial metal gloss molded product in which the transfer layer was integrated on the surface of the molded product. The use of this molded product is an AV equipment casing.

  Since the insulating metallic thin film layer having a metallic luster formed on the surface of the molded product has an insulation specification, phenomena such as appearance changes due to electrostatic breakdown and damage to internal circuits were not observed.

  A transfer material, which is an insulating partial metal glossy sheet, was prepared as follows, and an information communication device panel was prepared using the transfer material.

  A polyethylene terephthalate film having a thickness of 38 μm is used as a base sheet, a release layer made of an acrylic resin on the base sheet, a pattern layer made of an ink made of an acrylic-vinyl resin, and a translucent made of a two-component curable urethane urethane resin. A transparent vapor-deposited anchor layer using a transparent ink, and then a solvent-soluble pattern layer using a water-soluble ink were sequentially formed by a gravure printing method.

  Next, after heat treatment at 170 ° C. × 30 seconds / m, an insulating metal thin film layer made of a tin metal layer having an insulation specification having a light transmittance of 7 to 9% is formed on the entire surface by vacuum deposition, and then a thickness of 300 An insulating protective layer made of an alumina metal layer of ± 50 mm was formed on the entire surface.

  Next, the solvent-soluble pattern layer was washed away with water together with the insulating metal thin film layer and the insulating protective layer formed thereon.

  Next, an anchor layer and an adhesive layer made of vinyl chloride-vinyl acetate resin were sequentially laminated on the entire surface by a gravure printing method to obtain a transfer material.

  The insulating metal thin film layer of the transfer material thus obtained was free from scratches and had a beautiful pattern.

  This transfer material is placed so that the adhesive layer is located at the gate portion, and acrylic resin (Acrypet (registered trademark) VH manufactured by Mitsubishi Rayon Co., Ltd.) is melted, injected, cooled and individualized to produce an insulating partial metallic luster. After the sheet was integrated on the surface of the resin member, the base sheet was peeled off from the surface of the molded product to obtain an insulating partial metal gloss molded product in which the transfer layer was integrated on the surface of the molded product. This molded product is used for communication information equipment panels.

  Since the insulating metallic thin film layer having a metallic luster formed on the surface of the molded product has an insulation specification, phenomena such as a change in appearance due to electrostatic breakdown, damage to internal circuits, and communication failure due to radio wave interference were not observed.

  A transfer material, which is an insulating partial metal glossy sheet, was prepared as follows, and an information communication device panel was prepared using the transfer material.

  A polyethylene terephthalate film having a thickness of 38 μm is used as a base sheet, a release layer made of an acrylic resin on the base sheet, a pattern layer made of an ink made of an acrylic-vinyl resin, and a translucent made of a two-component curable urethane urethane resin. A transparent vapor-deposited anchor layer using a transparent ink, and then a solvent-soluble pattern layer using a water-soluble ink were sequentially formed by a gravure printing method.

  Next, after heat treatment at 175 ° C. × 30 seconds / m, an insulating metal thin film layer made of an indium metal layer having an insulation specification with a light transmittance of 10% is formed on the entire surface by vacuum deposition, and then a thickness of 300 ± 50 mm An insulating protective layer made of an alumina metal layer was formed on the entire surface.

  Next, the solvent-soluble pattern layer was washed away with water together with the insulating metal thin film layer and the insulating protective layer formed thereon.

  Next, an anchor layer and an adhesive layer made of vinyl chloride-vinyl acetate resin were sequentially laminated on the entire surface by a gravure printing method to obtain a transfer material.

  The insulating metal thin film layer of the transfer material thus obtained was free from scratches and had a beautiful pattern.

  This transfer material is placed so that the adhesive layer is located at the gate portion, and acrylic resin (Acrypet (registered trademark) VH manufactured by Mitsubishi Rayon Co., Ltd.) is melted, injected, cooled and individualized to produce an insulating partial metallic luster. After the sheet was integrated on the surface of the resin member, the base sheet was peeled off from the surface of the molded product to obtain an insulating partial metal gloss molded product in which the transfer layer was integrated on the surface of the molded product. This molded product is used for communication information equipment panels.

  Since the insulating metallic thin film layer having a metallic luster formed on the surface of the molded product has an insulation specification, phenomena such as a change in appearance due to electrostatic breakdown, damage to internal circuits, and communication failure due to radio wave interference were not observed.

Comparative example

  A transfer material, which is an insulating partial metal glossy sheet, was produced as follows, and an AV device casing was produced using the transfer material.

  Using a polyethylene terephthalate film with a thickness of 50 μm as a base sheet, a transparent layer ink made of a release layer made of an acrylic resin, a pattern layer made of an acrylic-vinyl resin, and a two-component curable urethane resin is used. Then, a transparent deposition anchor layer and a solvent-soluble pattern layer with water-soluble ink were sequentially formed by a gravure printing method.

  Subsequently, an insulating metal thin film layer made of a tin metal layer having an insulation specification having a light transmittance of 7 to 9% was formed on the entire surface by vacuum deposition after heat treatment at 170 ° C. × 30 seconds / m.

  Next, the solvent-soluble pattern layer was removed by washing with the insulating metal thin film layer formed thereon.

  Next, an anchor layer and an adhesive layer made of vinyl chloride-vinyl acetate resin were sequentially laminated on the entire surface by a gravure printing method to obtain a transfer material.

  In the transfer material thus obtained, the insulating metal thin film layer was partially damaged by the frictional contact between the water washing brush and the insulating metal thin film layer when washed with water.

  This transfer material is placed so that the adhesive layer is positioned at the gate portion, ABS resin (Toyolac (registered trademark) 920 manufactured by Toray Industries, Inc.) is melted, injected, cooled, and individualized to produce an insulating partially metallic glossy sheet. After being integrated on the surface of the resin member, the base sheet was peeled off from the surface of the molded product to obtain an insulating partial metal gloss molded product in which the transfer layer was integrated on the surface of the molded product.

  The use of this molded product is an AV equipment casing. However, the partial metal thin film layer formed on the surface of the molded product had scratches and uneven thickness of the tin metal layer, and a beautiful design surface could not be formed.

  INDUSTRIAL APPLICABILITY The present invention can be suitably used in various molded products such as information communication devices such as mobile phones, information devices inside automobiles, and home appliances, and is industrially useful.

It is sectional drawing which shows one Example of the manufacturing method of the insulating partial metal glossy sheet | seat of this invention. It is sectional drawing which shows one Example of the insulating partial metallic glossy sheet | seat of this invention. It is sectional drawing which shows one Example of the insulating partial metallic glossy sheet | seat of this invention. It is sectional drawing which shows one Example of the manufacturing method of the insulating partial metal glossy sheet | seat of this invention. It is sectional drawing which shows one Example of the manufacturing method of the insulating partial metal glossy sheet | seat of this invention. It is sectional drawing which shows one Example of the manufacturing method of the insulating partial metal glossy sheet | seat of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Insulating partial metallic luster sheet 2 Base sheet 3 Peeling layer 4 Design layer 5 Solvent soluble pattern layer 6 Anchor layer 7 Insulating metal thin film layer 8 Insulating protective layer 9 Adhesive layer

Claims (8)

At least a solvent-soluble pattern layer is partially formed on the substrate sheet, then an insulating metal thin film layer having a metallic luster is formed entirely, then an insulating protective layer is formed entirely, and then a solvent-soluble pattern A pattern having a metallic luster is formed in a region where the solvent-soluble pattern layer is not formed by solvent-washing and removing the solvent-soluble pattern layer together with the insulating metal thin film layer and the insulating protective layer formed on the layer. A method for producing an insulating partial metallic glossy sheet. The insulating partial metal glossy sheet according to claim 1, wherein the insulating metal thin film is made of one or more metals or alloys selected from the group consisting of Sn, In, Ag, Sb, Zn, Pb, Bi. Production method. The method for producing an insulating partial metallic glossy sheet according to claim 1, wherein the insulating protective layer is made of a metal oxide. The method for producing an insulating partial metallic glossy sheet according to claim 1, wherein the insulating partial metallic glossy sheet is an insert material or a transfer material. An insulating partial metal glossy sheet, wherein an insulating metal thin film layer having a metallic luster and an insulating protective layer are successively formed in the same pattern on a base sheet. The insulating partial metal glossy sheet according to claim 5, wherein the insulating metal thin film is made of one or more metals or alloys selected from the group consisting of Sn, In, Ag, Sb, Zn, Pb, and Bi. The insulating partial metallic glossy sheet according to claim 5, wherein the insulating protective layer is made of a metal oxide. The insulating partial metallic glossy sheet according to any one of claims 5 to 7, wherein the insulating partial metallic glossy sheet is an insert material or a transfer material.

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