WO2016152252A1 - Matte metal tone decorative sheet and manufacturing method therefor - Google Patents

Matte metal tone decorative sheet and manufacturing method therefor Download PDF

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Publication number
WO2016152252A1
WO2016152252A1 PCT/JP2016/052889 JP2016052889W WO2016152252A1 WO 2016152252 A1 WO2016152252 A1 WO 2016152252A1 JP 2016052889 W JP2016052889 W JP 2016052889W WO 2016152252 A1 WO2016152252 A1 WO 2016152252A1
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WO
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Prior art keywords
decorative sheet
matte
sheet
thin film
metal
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PCT/JP2016/052889
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French (fr)
Japanese (ja)
Inventor
忠壮 谷口
裕也 岩本
拓也 吉永
周一 田谷
篤昌 松本
和田　聡
大智 林
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日本写真印刷株式会社
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Publication of WO2016152252A1 publication Critical patent/WO2016152252A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
    • B44C3/02—Superimposing layers

Definitions

  • the present invention relates to a matte metal tone decorative sheet capable of decorating a matte metal tone decoration to a molded product having a complicated three-dimensional shape with a high deep drawing degree, and a manufacturing method thereof.
  • metallic decorations may be partially applied to give a high-class feeling, but depending on the parts, to prevent the driver's eyes from being dazzled by the reflection of light due to metallic luster. In some cases, it is necessary to suppress the metallic luster. In order to obtain such a molded product, it is known to use a matte metallic tone decorative sheet.
  • Patent Document 1 discloses a method for forming a concavo-convex portion on a part of a base sheet, thereby delustering a metal thin film layer thereunder. It is disclosed. Further, Patent Document 2 discloses a method in which a mat layer is partially printed on a base material sheet to form irregularities so that the design layer and metal thin film layer below the mat layer are delustered.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a matte metal tone decorative sheet that can be easily decorated with a matte metal tone, and a method for producing the same. To do.
  • the manufacturing method of the matte metallic tone decoration sheet of this invention heats the decoration sheet
  • the base sheet is easily stretched by heating, but the metal thin film layer laminated on the base sheet cannot follow the stretch of the base sheet, Receives tensile force by the sheet. Therefore, microcracks can be generated uniformly in the metal thin film layer, and a matte metal tone decorative sheet can be obtained. That is, since it is not necessary to form unevenness or a mat layer partially on the base sheet, the number of production steps can be reduced, and the alignment accuracy of the boundary between the glossy part and the matte part can be improved. .
  • the decorative sheet is obtained by laminating an adhesive layer on a metal thin film layer.
  • the decorative sheet has a pattern layer laminated on a base sheet.
  • the decorative sheet is obtained by laminating an anchor layer between a base sheet and a metal thin film layer.
  • the adhesion between the metal thin film layer and the anchor layer can be improved.
  • the anchor layer follows the stretching of the base sheet and a tensile force is applied to the metal thin film layer that is hardly stretched and is in close contact with the anchor layer, micro cracks can be generated uniformly in the metal thin film layer.
  • the decorative sheet is obtained by laminating a release layer on a base sheet.
  • the decorative sheet is obtained by laminating a release layer serving as the outermost surface of the transferred material on a base sheet.
  • the heating of the decorative sheet includes a step of arranging the decorative sheet on the transfer object and a step of applying pressure and heat to the decorative sheet.
  • the heating of the decorative sheet includes a step of feeding the decorative sheet into the mold and a step of closing the mold and applying pressure and heat to the decorative sheet by the molten resin to be injected. .
  • the heating of the decorative sheet is performed by the step of feeding the decorative sheet into the mold, the step of preheating the decorative sheet, the mold is closed, and the molten resin is injected into the decorative sheet. Applying pressure and heat.
  • the heating of the decorative sheet includes a step of preheating the decorative sheet, a step of preforming the decorative sheet, a step of feeding the preformed decorative sheet into the mold, and a mold. And a step of applying pressure and heat to the decorative sheet by the molten resin to be closed.
  • the matte metallic tone decorative sheet of the present invention includes at least a stretchable base sheet and a metal thin film layer partially laminated on the base sheet, and the metal thin film layer is evenly heated. It is characterized by having a matte metallic tone by having generated microcracks.
  • the base sheet is easily stretched by heating, but the metal thin film layer laminated on the base sheet cannot follow the stretch of the base sheet and receives a tensile force by the base sheet. Therefore, it becomes easy to generate microcracks uniformly in the metal thin film layer. That is, since it is not necessary to form unevenness or a mat layer partially on the base sheet, the number of production steps is reduced and the alignment accuracy of the boundary between the glossy part and the matte part can be improved.
  • the metal thin film layer is made of a metal having lower stretchability than the base sheet.
  • the metal thin film layer laminated on the base sheet cannot follow the stretching of the base sheet and receives a tensile force by the base sheet. Therefore, it is possible to easily generate microcracks uniformly in the metal thin film layer.
  • the metal thin film layer is made of aluminum or chromium.
  • an anchor layer is formed between the base sheet and the metal thin film layer.
  • the adhesion between the metal thin film layer and the anchor layer can be improved.
  • the anchor layer follows the stretching of the base sheet and a tensile force is applied to the metal thin film layer that is hardly stretched and is in close contact with the anchor layer, it is possible to easily generate microcracks uniformly in the metal thin film layer.
  • the anchor layer is made of a material having higher stretchability than the metal thin film layer.
  • the adhesion between the metal thin film layer and the anchor layer can be improved, and further, since the anchor layer is more easily stretched than the metal thin film layer, microcracks are easily generated uniformly in the metal thin film layer. be able to.
  • the manufacturing method of the matte metallic tone decoration sheet of this invention heats the decoration sheet
  • FIG. 1 shows a matte metal-like decorative sheet 11 in which a metal thin film layer is laminated on a substrate sheet 20 and microcracks are uniformly generated by heating.
  • the release layer 70, the release layer 80, and the anchor layer 30 are laminated on the base sheet, and the design layer 50 and the adhesive layer 60 are further formed, and the microcracks are uniformly generated by heating.
  • the matte metal tone decorative sheet 11 is shown.
  • 3 to 6 show examples of the embodiment of the heating step in the method for producing a matte metallic tone decorative sheet of the present invention.
  • the base sheet 20 As the base sheet 20, a resin sheet that is easily stretched by heating and excellent in moldability can be used. Examples of such materials include acrylic resins, olefin resins, polyester resins, vinyl chloride resins, polycarbonate resins, ABS resins, and laminates thereof.
  • the thickness of the base sheet 20 can be 20 ⁇ m to 600 ⁇ m.
  • Metal thin film layer The metal thin film layer is partially formed on the base sheet in order to express a metallic decoration.
  • a vacuum deposition method, a sputtering method, an ion plating method, a plating method, or the like may be used as a method for forming the metal thin film layer.
  • the metal is not particularly limited, but in the present invention, a metal having a matte metal-like decorative sheet 11 by generating microcracks uniformly in the metal thin film layer is preferable, and a metal having lower stretchability than the base sheet is preferable.
  • Aluminum or chromium is particularly preferable. By doing in this way, it can make it easy to generate a microcrack uniformly in a metal thin film layer.
  • An anchor layer 30, a release layer 70, and a release layer 80 may be formed between the base sheet 20 and the metal thin film layer 40 in which microcracks are uniformly generated (see FIG. 2).
  • the anchor layer 30 is preferably made of a resin that is easily stretched by heating. By doing in this way, the adhesiveness of a metal thin film layer can be improved.
  • the material of the anchor layer 30 include acrylic resins, acrylic urethane resins, polyurethane resins, vinyl resins, epoxy resins, and polyester resins.
  • a normal printing method such as a gravure printing method or a screen printing method, or a coating method such as a gravure coating method or a roll coating method may be used.
  • the release layer 70 is formed in order to improve the peelability of the base sheet 20, and peels off together with the base sheet 20 when the base sheet 20 is peeled off.
  • the release layer may be formed entirely on the base sheet.
  • the release layer material include melamine resin release agents, silicon resin release agents, fluororesin release agents, cellulose resin release agents, paraffin release agents, and composite release agents thereof. Can be used.
  • a coating method such as a roll coating method or a spray coating method, a printing method such as a gravure printing method, or a screen printing method may be used.
  • the release layer 80 is formed so as to peel from the base sheet 20 or the release layer 70 and become the outermost surface of the transfer object when the base sheet 20 is peeled after transfer.
  • the release layer is entirely formed on the base sheet or the release layer.
  • the release layer 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 system. It is preferable to use a resin or a copolymer such as ethylene-vinyl acetate copolymer resin.
  • 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.
  • a normal printing method such as a gravure printing method or a screen printing method, or a coating method such as a gravure coating method or a roll coating method may be used.
  • the design layer 50 may be formed between the partially formed metal thin film layers, and the adhesive layer 60 may be formed on the metal thin film layer and the design layer 50.
  • Examples of the material of the pattern layer 50 include resins such as polyvinyl resins, polyamide resins, polyester resins, acrylic resins, polyurethane resins, polyvinyl acetal resins, polyester urethane resins, cellulose ester resins, alkyd resins.
  • a colored ink containing a suitable color pigment or dye as a colorant may be used as a binder.
  • a normal printing method such as a gravure printing method, a screen printing method, or an offset printing method, a roll coater method, or a transfer method may be used.
  • the adhesive layer 60 is formed to adhere each of the above layers on the transfer object.
  • a heat-sensitive or pressure-sensitive resin suitable for the material of the transfer object may be appropriately selected and used.
  • the material of the transfer object is an acrylic resin
  • an acrylic resin may be used.
  • the material of the material to be transferred is polyphenylene oxide / polystyrene resin, polycarbonate resin, styrene copolymer resin, or polystyrene blend resin, acrylic resin, polystyrene resin, polyamide having affinity with these resins A series resin or the like may be used.
  • the material of the transfer object is a polypropylene resin
  • a chlorinated polyolefin resin a chlorinated ethylene-vinyl acetate copolymer resin, a cyclized rubber, a coumarone indene resin, or the like
  • a method for forming the adhesive layer 60 a normal printing method such as a gravure printing method or a screen printing method, or a coating method such as a gravure coating method or a roll coating method may be used.
  • the decorative sheet having the respective layers made of the above materials is heated to produce the matte metallic tone decorative sheet of the present invention.
  • a decorative sheet 10 in which a microcrack is not generated in a metal thin film layer is placed on an object to be transferred such as a molded product 100 (see FIG. 3A), and the decorative sheet 10 is heated by a heated roll 90. Heat and pressure are applied to (see FIG. 3B).
  • the temperature of heat applied to the decorative sheet by the roll can be 170 to 240 ° C., and the pressure can be 0.1 to 1.0 MPa.
  • the decorative sheet is stretched by heating with a roll, and microcracks can be evenly generated in the metal thin film layer. That is, the decoration sheet 10 can be made into the matte metal tone decoration sheet 11 by the heating by a roll. Further, the decorative sheet is further stretched by pressurization with a roll. By this action, microcracks can be generated more uniformly than when heating.
  • the base material sheet 20 of the matte metal tone decorating sheet 11 can be peeled off, and the transfer layer of the matte metal tone decorating sheet 11 is formed into a molded product. By transferring to the surface, a molded product having a matte metallic decoration can be obtained. Furthermore, if the matte metal tone decorative sheet 11 has a release layer and a release layer, after peeling the base material sheet 20 of the matte metal tone decorating sheet 11, the molded product is exposed to, for example, ultraviolet rays. The release layer can be cured. That is, it is possible to obtain a molded article having a high surface hardness and a matte metallic decoration. When the metal thin film layer in which microcracks are generated uniformly is located on the outer surface of the molded product, a protective layer may be formed by painting after the molding process.
  • the transfer layer of the matte metallic tone decorative sheet 11 is transferred to the molded product 100 by heating and pressurizing with a roll, and a molded product having a matte metallic tone decoration can be obtained.
  • the decorative sheet 10 includes the base material sheet 20 and the anchor layer 30 selected from the above materials, the heat shrinkage rate when stretched by heating and heated at 160 ° C. for 3 minutes, for example, is 2.0% or more. It can be. As it is easy to stretch by heating, microcracks are generated even in the drying process after laminating the metal thin film layer, but it does not occur evenly in the metal thin film layer. Microcracks can be generated, and the matte metallic tone decorative sheet 11 of the present invention can be obtained.
  • the decorative sheet 10 is fed into the movable side 220 of the mold 200 (see FIG. 4A), fixed with the clamp member 230 and the like, and then the inside of the movable side cavity is vacuumed to bring the decorative sheet to the cavity surface.
  • the mold is closed, the molten resin 110 is injected into the cavity from the fixed side 210, and heat and pressure are applied to the decorative sheet 10 (see FIG. 4B).
  • the decorating sheet 10 is good to use the same thing as 1st embodiment.
  • Method to send decorative sheet As a method of sending the decorative sheet 10 to the movable side 220, a single sheet of decorative sheet may be sent one by one, or a necessary part of a long decorative sheet may be sent intermittently. When a long decorative sheet is used, a feeding device having a positioning mechanism is used to send the decorative sheet, so that the register of the decorative sheet design layer and the cavity of the movable side 220 coincide with each other. Good.
  • injection resin examples include general-purpose resins such as polystyrene resin, polyolefin resin, ABS resin, AS resin, and AN resin.
  • general engineering resins such as polyphenylene oxide / polystyrene resins, polycarbonate resins, polyacetal resins, acrylic resins, polycarbonate-modified polyphenylene ether resins, polybutylene terephthalate resins, polybutylene terephthalate resins, ultrahigh molecular weight polyethylene resins, and polysulfone Super engineering resins such as resins, polyphenylene sulfide resins, polyphenylene oxide resins, polyarylate resins, polyetherimide resins, polyimide resins, liquid crystal polyester resins, and polyallyl heat-resistant resins can also be used.
  • composite resins to which reinforcing materials such as glass fibers and inorganic fillers are added can also be used.
  • the temperature of heat applied to the decorative sheet by the molten resin can be 200 to 320 ° C., and the pressure can be 19 to 50 MPa.
  • the decorative sheet is stretched by heating with the injected molten resin, and microcracks can be generated uniformly in the metal thin film layer. That is, the decorative sheet 10 can be made into a matte metallic tone decorative sheet 11 by heating with a molten resin. Further, the decorative sheet is further stretched by pressurization with a molten resin. By this action, microcracks can be generated more uniformly than during heating.
  • the matte metal tone decorative sheet 11 and the resin can be integrally formed by heating and pressurizing with the injected molten resin, and a molded article having a matte metal tone decoration can be obtained. it can. Moreover, the dimensional stability of a molded product can be ensured by integral molding.
  • the base material sheet 20 of the matte metal tone decorating sheet 11 can be peeled off, and the transfer layer of the matte metal tone decorating sheet 11 is formed into a molded product. By transferring to the surface, a molded product having a matte metallic decoration can be obtained. Furthermore, if the matte metal tone decorative sheet 11 has a release layer and a release layer, after peeling the base material sheet 20 of the matte metal tone decorating sheet 11, the molded product is exposed to, for example, ultraviolet rays. The release layer can be cured. That is, it is possible to obtain a molded article having a high surface hardness and a matte metallic decoration. When the metal thin film layer 40 in which microcracks are uniformly generated is located on the outer surface of the molded product, a protective layer may be formed by painting after the molding process.
  • thermoforming method As a preheating method, an infrared heater, an electric heater, a high frequency induction, a halogen lamp, a microwave, a high temperature derivative such as steam, a laser, or the like can be used.
  • the temperature of heat applied to the decorative sheet by the heat source can be 100 to 250 ° C.
  • the decorative sheet is stretched by preheating, and microcracks can be uniformly generated in the metal thin film layer. That is, the decorative sheet 10 can be made into a matte metallic tone decorative sheet 11 by preheating.
  • the matte metal tone decorative sheet is stretched by heating with the molten resin, and the matte metal tone decorating sheet is further stretched by pressurization with the molten resin.
  • the matte metal tone decorative sheet 11 and the resin can be integrally formed by heating and pressurizing with the injected molten resin, and a molded product having a matte metal tone decoration can be obtained.
  • a protective layer may be formed by painting after the molding process.
  • the decorative sheet 10 is fed into the preforming mold 400 and preheated by the heat source 300 (see FIG. 6A).
  • the matte metal tone decorating sheet is preliminarily formed by vacuum suction or applying compressed air to the matte metal tone decorating sheet (see FIG. 6B). Unnecessary portions of the preformed matte metallic decoration sheet are trimmed, and the trimmed matte metallic decoration sheet is inserted into the cavity of the movable side 220 (see FIG. 6C).
  • the inserted matte metallic decoration sheet may be fixed by a clamp member or vacuum suction.
  • the mold is closed, the molten resin 110 is injected into the cavity from the fixed side 210, and heat and pressure are applied to the matte metal tone decorative sheet (see FIG. 6D).
  • the matte metal tone decorative sheet is stretched by heating with the molten resin, and the matte metal tone decorating sheet is further stretched by pressurization with the molten resin.
  • the matte metal tone decorative sheet 11 and the resin can be integrally formed by heating and pressurizing with the molten resin to be injected, and a molded product having a matte metal tone decoration can be obtained. Moreover, the dimensional stability of a molded product can be ensured by integral molding.
  • a protective layer may be formed by painting after the molding process.
  • a matte metallic decoration sheet can be obtained.

Abstract

[Problem] The purpose of the present invention is to provide a matte metal tone decorative sheet with which a matte metal tone decoration can be easily implemented, and a manufacturing method therefor. [Solution] The present invention is characterized by heating a decorative sheet in which at least a metal thin film layer is partially laminated on a base material sheet having stretching properties, so as to evenly generate micro cracks in the metal thin film layer and obtain a matte metal tone. The base material sheet is made easily stretchable by the heating, but the metal thin film layer is not capable of following the stretching of the base material sheet and receives a tensile force from the base material sheet. Accordingly, the micro cracks can be evenly generated in the metal thin film layer. That is, since there is no need to partially form irregularities or a matte layer on the base material sheet, the number of processing steps can be decreased and the aligning accuracy at the boundary between a gloss portion and a matte portion can be improved.

Description

艶消金属調加飾シートとその製造方法Matte metal tone decorative sheet and its manufacturing method
　本発明は、深絞り度の高い複雑な立体形状を有する成形品に対して艶消金属調の装飾を施すことができる艶消金属調加飾シートとその製造方法に関する。 [Technical Field] The present invention relates to a matte metal tone decorative sheet capable of decorating a matte metal tone decoration to a molded product having a complicated three-dimensional shape with a high deep drawing degree, and a manufacturing method thereof.
　自動車の外装部品や内装部品などの樹脂成形品は、深絞り度の高い複雑な立体形状を有するものが多く、近年は多様な装飾を施した外装部品や内装部品が望まれている。 Many resin molded products such as exterior parts and interior parts of automobiles have a complicated three-dimensional shape with a high degree of deep drawing. In recent years, exterior parts and interior parts with various decorations are desired.
　特に内装部品に関しては、高級感を出すために金属調の装飾を部分的に施す場合があるが、金属光沢による光の反射で運転者の目を眩ませないようにするために、部品によっては金属光沢を抑えなくてはならない場合がある。このような成形品を得るために、艶消金属調加飾シートを用いることが知られている。 Especially for interior parts, metallic decorations may be partially applied to give a high-class feeling, but depending on the parts, to prevent the driver's eyes from being dazzled by the reflection of light due to metallic luster. In some cases, it is necessary to suppress the metallic luster. In order to obtain such a molded product, it is known to use a matte metallic tone decorative sheet.
　加飾シートにおいて部分的に艶消金属調を実現する方法として、たとえば特許文献１には、基材シートの一部分に凹凸を形成することで、その下にある金属薄膜層の艶を消す方法が開示されている。また特許文献２には、基材シートに部分的にマット層を印刷して凹凸を形成することで、その下の図柄層や金属薄膜層の艶を消す方法が開示されている。 As a method for partially realizing a matte metallic tone in a decorative sheet, for example, Patent Document 1 discloses a method for forming a concavo-convex portion on a part of a base sheet, thereby delustering a metal thin film layer thereunder. It is disclosed. Further, Patent Document 2 discloses a method in which a mat layer is partially printed on a base material sheet to form irregularities so that the design layer and metal thin film layer below the mat layer are delustered.
特開平１－４３９９号公報Japanese Patent Laid-Open No. 1-4399 特許第３４０１２３１号公報Japanese Patent No. 3401231
　しかし上記２つの方法によれば、基材シート表面に部分的に凹凸を形成したり、基材シート表面に部分的にマット層を印刷したりする加工が必要になるために、次のような共通の課題が２つ生ずる。
（１）加飾シートの生産工程数が多く煩雑になる
（２）基材シート表面の凹凸またはマット層に対して、図柄層および金属薄膜層の位置を合わせる必要があるため、艶部分と艶消し部分との境界の位置合わせ精度が低下する However, according to the above two methods, it is necessary to perform a process of partially forming irregularities on the surface of the base sheet or partially printing a mat layer on the surface of the base sheet. Two common issues arise.
(1) The number of decorative sheet production processes is large and complicated. (2) Since the positions of the pattern layer and the metal thin film layer need to be aligned with the unevenness or matte layer on the base sheet surface, The alignment accuracy of the border with the erased part decreases.
　本発明は、上記のような課題を解決するためになされたもので、簡単に艶消金属調の装飾を施すことのできる艶消金属調加飾シートとその製造方法を提供することを目的とする。 The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a matte metal tone decorative sheet that can be easily decorated with a matte metal tone, and a method for producing the same. To do.
　以下に、課題を解決するための手段として複数の態様を説明する。これらの態様は、必要に応じて任意に組み合わせることができる。 Hereinafter, a plurality of modes will be described as means for solving the problem. These aspects can be arbitrarily combined as necessary.
　本発明の艶消金属調加飾シートの製造方法は、延伸性を有する基材シート上に少なくとも金属薄膜層が部分的に積層された加飾シートを加熱して、金属薄膜層に均等にマイクロクラックを発生させて艶消金属調にすることを特徴とするものである。 The manufacturing method of the matte metallic tone decoration sheet of this invention heats the decoration sheet | seat on which the at least metal thin film layer was laminated | stacked on the base material sheet | seat which has an extending | stretching property, and it is micro by the metal thin film layer equally. It is characterized by creating a matte metal tone by generating cracks.
　この態様の艶消金属調加飾シートの製造方法では、基材シートは加熱によって延伸させやすくなるが、基材シートに積層させた金属薄膜層は基材シートの延伸に追随できず、基材シートによって引っ張り力を受ける。したがって、金属薄膜層に均等にマイクロクラックを発生させることができ、艶消金属調加飾シートを得ることができる。すなわち、基材シートに部分的に凹凸やマット層を形成する必要がないため、生産工程数を少なくすることができ、かつ艶部分と艶消し部分の境界の位置合わせ精度を良くすることができる。 In the method for producing a matte metallic tone decorative sheet of this aspect, the base sheet is easily stretched by heating, but the metal thin film layer laminated on the base sheet cannot follow the stretch of the base sheet, Receives tensile force by the sheet. Therefore, microcracks can be generated uniformly in the metal thin film layer, and a matte metal tone decorative sheet can be obtained. That is, since it is not necessary to form unevenness or a mat layer partially on the base sheet, the number of production steps can be reduced, and the alignment accuracy of the boundary between the glossy part and the matte part can be improved. .
　好ましい態様においては、加飾シートは、金属薄膜層上に接着層が積層されたものである。 In a preferred embodiment, the decorative sheet is obtained by laminating an adhesive layer on a metal thin film layer.
　好ましい態様においては、加飾シートは、基材シート上に絵柄層が積層されたものである。 In a preferred embodiment, the decorative sheet has a pattern layer laminated on a base sheet.
　好ましい態様においては、加飾シートは、基材シートと金属薄膜層との間にアンカー層が積層されたものである。この好ましい態様においては、金属薄膜層とアンカー層との密着性を向上することができる。またアンカー層が基材シートの延伸に追随し、アンカー層に密着した延伸しにくい金属薄膜層に引っ張り力が加わるため、金属薄膜層に均等にマイクロクラックを発生させることができる。 In a preferred embodiment, the decorative sheet is obtained by laminating an anchor layer between a base sheet and a metal thin film layer. In this preferred embodiment, the adhesion between the metal thin film layer and the anchor layer can be improved. In addition, since the anchor layer follows the stretching of the base sheet and a tensile force is applied to the metal thin film layer that is hardly stretched and is in close contact with the anchor layer, micro cracks can be generated uniformly in the metal thin film layer.
　好ましい態様においては、加飾シートは、基材シート上に離型層が積層されたものである。 In a preferred embodiment, the decorative sheet is obtained by laminating a release layer on a base sheet.
　好ましい態様においては、加飾シートは、基材シート上に被転写物の最外面となる剥離層が積層されたものである。 In a preferred embodiment, the decorative sheet is obtained by laminating a release layer serving as the outermost surface of the transferred material on a base sheet.
　これらの好ましい態様においては、加飾シートの加熱は、被転写物上に加飾シートを配置する工程と、加飾シートに圧力および熱を加える工程とを含むものである。 In these preferred embodiments, the heating of the decorative sheet includes a step of arranging the decorative sheet on the transfer object and a step of applying pressure and heat to the decorative sheet.
　好ましい態様においては、加飾シートの加熱は、金型内に加飾シートを送り込む工程と、金型を閉じて、射出される溶融樹脂により加飾シートに圧力および熱を加える工程とを含むものである。 In a preferred embodiment, the heating of the decorative sheet includes a step of feeding the decorative sheet into the mold and a step of closing the mold and applying pressure and heat to the decorative sheet by the molten resin to be injected. .
　好ましい態様においては、加飾シートの加熱は、金型内に加飾シートを送り込む工程と、加飾シートを予備加熱する工程と、金型を閉じて、射出される溶融樹脂により加飾シートに圧力および熱を加える工程とを含むものである。 In a preferable aspect, the heating of the decorative sheet is performed by the step of feeding the decorative sheet into the mold, the step of preheating the decorative sheet, the mold is closed, and the molten resin is injected into the decorative sheet. Applying pressure and heat.
　好ましい態様においては、加飾シートの加熱は、加飾シートを予備加熱する工程と、加飾シートを予備成形する工程と、金型内に予備成形した加飾シートを送り込む工程と、金型を閉じて、射出される溶融樹脂により加飾シートに圧力および熱を加える工程とを含むものである。 In a preferred aspect, the heating of the decorative sheet includes a step of preheating the decorative sheet, a step of preforming the decorative sheet, a step of feeding the preformed decorative sheet into the mold, and a mold. And a step of applying pressure and heat to the decorative sheet by the molten resin to be closed.
　本発明の艶消金属調加飾シートは、延伸性を有する基材シートと、前記基材シート上に部分的に積層された金属薄膜層とを少なくとも含み、前記金属薄膜層が加熱により均等に発生させられたマイクロクラックを有することにより艶消金属調を示すことを特徴とするものである。 The matte metallic tone decorative sheet of the present invention includes at least a stretchable base sheet and a metal thin film layer partially laminated on the base sheet, and the metal thin film layer is evenly heated. It is characterized by having a matte metallic tone by having generated microcracks.
　この好ましい態様においては、基材シートは加熱によって延伸しやすくなるが、基材シートに積層された金属薄膜層は基材シートの延伸に追随できず、基材シートによって引っ張り力を受ける。したがって、金属薄膜層に均等にマイクロクラックが発生させられやすくなる。すなわち、基材シートに部分的に凹凸やマット層を形成する必要がないため、生産工程数が少なく簡略になり、かつ艶部分と艶消し部分の境界の位置合わせ精度を良くすることができる。 In this preferred embodiment, the base sheet is easily stretched by heating, but the metal thin film layer laminated on the base sheet cannot follow the stretch of the base sheet and receives a tensile force by the base sheet. Therefore, it becomes easy to generate microcracks uniformly in the metal thin film layer. That is, since it is not necessary to form unevenness or a mat layer partially on the base sheet, the number of production steps is reduced and the alignment accuracy of the boundary between the glossy part and the matte part can be improved.
　好ましい態様においては、金属薄膜層が、基材シートよりも低い延伸性を有する金属からなるものである。 In a preferred embodiment, the metal thin film layer is made of a metal having lower stretchability than the base sheet.
　この好ましい態様においては、基材シートに積層させた金属薄膜層は基材シートの延伸に追随できず、基材シートによって引っ張り力を受ける。したがって、金属薄膜層に均等にマイクロクラックを発生させやすくすることができる。 In this preferred embodiment, the metal thin film layer laminated on the base sheet cannot follow the stretching of the base sheet and receives a tensile force by the base sheet. Therefore, it is possible to easily generate microcracks uniformly in the metal thin film layer.
　好ましい態様においては、金属薄膜層がアルミニウムまたはクロムからなるものである。 In a preferred embodiment, the metal thin film layer is made of aluminum or chromium.
　好ましい態様においては、基材シートと金属薄膜層との間にアンカー層が形成されたものである。 In a preferred embodiment, an anchor layer is formed between the base sheet and the metal thin film layer.
　この好ましい態様においては、金属薄膜層とアンカー層との密着性を向上させることができる。また、アンカー層が基材シートの延伸に追随し、アンカー層に密着した延伸しにくい金属薄膜層に引っ張り力が加わるため、金属薄膜層に均等にマイクロクラックを発生させやすくすることができる。 In this preferred embodiment, the adhesion between the metal thin film layer and the anchor layer can be improved. In addition, since the anchor layer follows the stretching of the base sheet and a tensile force is applied to the metal thin film layer that is hardly stretched and is in close contact with the anchor layer, it is possible to easily generate microcracks uniformly in the metal thin film layer.
　この好ましい態様においては、アンカー層が、金属薄膜層よりも高い延伸性を有する材質からなるものである。 In this preferred embodiment, the anchor layer is made of a material having higher stretchability than the metal thin film layer.
　この好ましい態様においては、金属薄膜層とアンカー層との密着性を向上させることができ、さらにアンカー層が金属薄膜層よりも延伸しやすいため、金属薄膜層に均等にマイクロクラックを発生させやすくすることができる。 In this preferred embodiment, the adhesion between the metal thin film layer and the anchor layer can be improved, and further, since the anchor layer is more easily stretched than the metal thin film layer, microcracks are easily generated uniformly in the metal thin film layer. be able to.
　本発明によれば、簡単に艶消金属調の装飾を施すことのできる艶消金属調加飾シートとその製造方法を提供することができる。 According to the present invention, it is possible to provide a matte metal tone decorative sheet that can be easily decorated with a matte metal tone and a method for producing the same.
本発明の艶消金属調加飾シートの一実施形態を示す模式的な断面図である。It is typical sectional drawing which shows one Embodiment of the matte metal tone decoration sheet | seat of this invention. 本発明の艶消金属調加飾シートの他の実施形態を示す模式的な断面図である。It is typical sectional drawing which shows other embodiment of the matte metal tone decoration sheet | seat of this invention. 本発明の艶消金属調加飾シートの製造方法における加熱工程の一実施形態を示す模式的な断面図である。It is typical sectional drawing which shows one Embodiment of the heating process in the manufacturing method of the matte metal tone decoration sheet of this invention. 本発明の艶消金属調加飾シートの製造方法における加熱工程の他の実施形態を示す模式的な断面図である。It is typical sectional drawing which shows other embodiment of the heating process in the manufacturing method of the matte metal tone decoration sheet of this invention. 本発明の艶消金属調加飾シートの製造方法における加熱工程の他の実施形態を示す模式的な断面図である。It is typical sectional drawing which shows other embodiment of the heating process in the manufacturing method of the matte metal tone decoration sheet of this invention. 本発明の艶消金属調加飾シートの製造方法における加熱工程の他の実施形態を示す模式的な断面図である。It is typical sectional drawing which shows other embodiment of the heating process in the manufacturing method of the matte metal tone decoration sheet of this invention.
　以下、図面を参照しながら、本発明の艶消金属調加飾シートとその製造方法について、実施形態の一例を説明する。 Hereinafter, an example of the embodiment of the matte metal tone decorative sheet and the manufacturing method thereof according to the present invention will be described with reference to the drawings.
　本発明の艶消金属調加飾シートの製造方法は、延伸性を有する基材シート上に少なくとも金属薄膜層が部分的に積層された加飾シートを加熱して、金属薄膜層に均等にマイクロクラックを発生させて艶消金属調にすることを特徴とするものである。 The manufacturing method of the matte metallic tone decoration sheet of this invention heats the decoration sheet | seat on which the at least metal thin film layer was laminated | stacked on the base material sheet | seat which has an extending | stretching property, and it is micro by the metal thin film layer equally. It is characterized by creating a matte metal tone by generating cracks.
　図１に、基材シート２０上に金属薄膜層が積層され、加熱することによってマイクロクラックが均等に発生させられた艶消金属調加飾シート１１を示す。図２に、基材シート上に離型層７０、剥離層８０、アンカー層３０が積層され、さらに図柄層５０および接着層６０が形成され、加熱することによってマイクロクラックが均等に発生させられた艶消金属調加飾シート１１を示す。図３～図６に、本発明の艶消金属調加飾シートの製造方法における加熱工程の実施形態の例を示す。 FIG. 1 shows a matte metal-like decorative sheet 11 in which a metal thin film layer is laminated on a substrate sheet 20 and microcracks are uniformly generated by heating. In FIG. 2, the release layer 70, the release layer 80, and the anchor layer 30 are laminated on the base sheet, and the design layer 50 and the adhesive layer 60 are further formed, and the microcracks are uniformly generated by heating. The matte metal tone decorative sheet 11 is shown. 3 to 6 show examples of the embodiment of the heating step in the method for producing a matte metallic tone decorative sheet of the present invention.
＜第一実施形態＞
　まず、第一実施形態について説明する。 <First embodiment>
First, the first embodiment will be described.
（基材シート）
　基材シート２０としては、加熱によって延伸しやすく成形性に優れた樹脂シートを用いることができる。そのような材質としては、アクリル系樹脂、オレフィン系樹脂ポリエステル系樹脂、塩ビ系樹脂、ポリカーボネート系樹脂、ＡＢＳ系樹脂およびそれらの積層品が挙げられる。また基材シート２０の厚みは、２０μｍ～６００μｍとすることができる。 (Substrate sheet)
As the base sheet 20, a resin sheet that is easily stretched by heating and excellent in moldability can be used. Examples of such materials include acrylic resins, olefin resins, polyester resins, vinyl chloride resins, polycarbonate resins, ABS resins, and laminates thereof. The thickness of the base sheet 20 can be 20 μm to 600 μm.
（金属薄膜層）
　金属薄膜層は、金属調の装飾を表現するために、基材シート上に部分的に形成する。金属薄膜層の形成方法としては、真空蒸着法、スパッタリング法、イオンプレーティング法、めっき法などを用いるとよい。金属としては、特に限定されないが、本発明では金属薄膜層にマイクロクラックを均等に発生させることで艶消金属調加飾シート１１を得るため、基材シートよりも延伸性が低い金属が好ましく、特にアルミニウムまたはクロムが好ましい。このようにすることで、金属薄膜層に均等にマイクロクラックを発生させやすくすることができる。 (Metal thin film layer)
The metal thin film layer is partially formed on the base sheet in order to express a metallic decoration. As a method for forming the metal thin film layer, a vacuum deposition method, a sputtering method, an ion plating method, a plating method, or the like may be used. The metal is not particularly limited, but in the present invention, a metal having a matte metal-like decorative sheet 11 by generating microcracks uniformly in the metal thin film layer is preferable, and a metal having lower stretchability than the base sheet is preferable. Aluminum or chromium is particularly preferable. By doing in this way, it can make it easy to generate a microcrack uniformly in a metal thin film layer.
（その他の層）
　基材シート２０とマイクロクラックが均等に発生した金属薄膜層４０との間には、アンカー層３０、離型層７０、剥離層８０を形成してもよい（図２参照）。アンカー層３０は、加熱によって延伸しやすい樹脂を用いることが好ましい。このようにすることで金属薄膜層の密着性を向上することができる。アンカー層３０の材質としては、アクリル系樹脂、アクリルウレタン系樹脂、ポリウレタン系樹脂、ビニル系樹脂、エポキシ系樹脂、ポリエステル系樹脂が挙げられる。アンカー層３０の形成方法としては、グラビア印刷法、スクリーン印刷法などの通常の印刷法や、グラビアコート法、ロールコート法などのコート法を用いるとよい。 (Other layers)
An anchor layer 30, a release layer 70, and a release layer 80 may be formed between the base sheet 20 and the metal thin film layer 40 in which microcracks are uniformly generated (see FIG. 2). The anchor layer 30 is preferably made of a resin that is easily stretched by heating. By doing in this way, the adhesiveness of a metal thin film layer can be improved. Examples of the material of the anchor layer 30 include acrylic resins, acrylic urethane resins, polyurethane resins, vinyl resins, epoxy resins, and polyester resins. As a method for forming the anchor layer 30, a normal printing method such as a gravure printing method or a screen printing method, or a coating method such as a gravure coating method or a roll coating method may be used.
　離型層７０は、基材シート２０の剥離性を高めるために形成し、基材シート２０を剥離した際に、基材シート２０とともに剥離する。離型層は基材シート上に全面的に形成してもよい。離型層の材質としては、メラミン樹脂系離型剤、シリコン樹脂系離型剤、フッ素樹脂系離型剤、セルロース樹脂系離型剤、パラフィン系離型剤およびこれらの複合型離型剤などを用いることができる。離型層の形成方法としては、ロールコート法、スプレーコート法などのコート法、グラビア印刷法、スクリーン印刷法などの印刷法を用いるとよい。 The release layer 70 is formed in order to improve the peelability of the base sheet 20, and peels off together with the base sheet 20 when the base sheet 20 is peeled off. The release layer may be formed entirely on the base sheet. Examples of the release layer material include melamine resin release agents, silicon resin release agents, fluororesin release agents, cellulose resin release agents, paraffin release agents, and composite release agents thereof. Can be used. As a method for forming the release layer, a coating method such as a roll coating method or a spray coating method, a printing method such as a gravure printing method, or a screen printing method may be used.
　剥離層８０は、転写後に基材シート２０を剥離した際に、基材シート２０または離型層７０から剥離して被転写物の最外面となるように形成する。剥離層は基材シート上または離型層上に全面的に形成する。剥離層の材質としては、アクリル系樹脂、ポリエステル系樹脂、ポリ塩化ビニル系樹脂、セルロース系樹脂、ゴム系樹脂、ポリウレタン系樹脂、ポリ酢酸ビニル系樹脂などの他、塩化ビニル―酢酸ビニル共重合体系樹脂、エチレン―酢酸ビニル共重合体系樹脂などのコポリマーを用いるとよい。剥離層に硬度が必要な場合には、紫外線硬化性樹脂などの光硬化性樹脂、電子線硬化性樹脂などの放射線硬化性樹脂、熱硬化性樹脂などを選定して用いるとよい。剥離層の形成方法としては、グラビア印刷法、スクリーン印刷法などの通常の印刷法や、グラビアコート法、ロールコート法などのコート法を用いるとよい。 The release layer 80 is formed so as to peel from the base sheet 20 or the release layer 70 and become the outermost surface of the transfer object when the base sheet 20 is peeled after transfer. The release layer is entirely formed on the base sheet or the release layer. The release layer 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 system. It is preferable to use a resin or a copolymer such as ethylene-vinyl acetate copolymer resin. When the release layer 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. As a method for forming the release layer, a normal printing method such as a gravure printing method or a screen printing method, or a coating method such as a gravure coating method or a roll coating method may be used.
　また、部分的に形成された金属薄膜層の間に図柄層５０を形成してもよく、金属薄膜層および図柄層５０上に接着層６０を形成してもよい。 Further, the design layer 50 may be formed between the partially formed metal thin film layers, and the adhesive layer 60 may be formed on the metal thin film layer and the design layer 50.
　図柄層５０の材質としては、ポリビニル系樹脂、ポリアミド系樹脂、ポリエステル系樹脂、アクリル系樹脂、ポリウレタン系樹脂、ポリビニルアセタール系樹脂、ポリエステルウレタン系樹脂、セルロースエステル系樹脂、アルキド系樹脂などの樹脂をバインダーとし、適切な色の顔料または染料を着色剤として含有する着色インキを用いるとよい。図柄層５０の形成方法としては、グラビア印刷法、スクリーン印刷法、オフセット印刷法などの通常の印刷法やロールコーター法あるいは転写法などを用いるとよい。 Examples of the material of the pattern layer 50 include resins such as polyvinyl resins, polyamide resins, polyester resins, acrylic resins, polyurethane resins, polyvinyl acetal resins, polyester urethane resins, cellulose ester resins, alkyd resins. A colored ink containing a suitable color pigment or dye as a colorant may be used as a binder. As a method for forming the pattern layer 50, a normal printing method such as a gravure printing method, a screen printing method, or an offset printing method, a roll coater method, or a transfer method may be used.
　接着層６０は、被転写物上に上記の各層を接着するために形成する。接着層６０としては、被転写物の材質に適した感熱性または感圧性の樹脂を適宜選択して用いるとよい。たとえば、被転写物の材質がアクリル系樹脂の場合は、アクリル系樹脂を用いるとよい。また、被転写物の材質がポリフェニレンオキシド・ポリスチレン系樹脂、ポリカーボネート系樹脂、スチレン共重合体系樹脂、ポリスチレン系ブレンド樹脂の場合は、これらの樹脂と親和性のあるアクリル系樹脂、ポリスチレン系樹脂、ポリアミド系樹脂などを使用すればよい。さらに、被転写物の材質がポリプロピレン樹脂の場合は、塩素化ポリオレフィン樹脂、塩素化エチレン‐酢酸ビニル共重合体樹脂、環化ゴム、クマロンインデン樹脂などを使用すればよい。接着層６０の形成方法としては、グラビア印刷法、スクリーン印刷法などの通常の印刷法や、グラビアコート法、ロールコート法などのコート法を用いるとよい。 The adhesive layer 60 is formed to adhere each of the above layers on the transfer object. As the adhesive layer 60, a heat-sensitive or pressure-sensitive resin suitable for the material of the transfer object may be appropriately selected and used. For example, when the material of the transfer object is an acrylic resin, an acrylic resin may be used. In addition, when the material of the material to be transferred is polyphenylene oxide / polystyrene resin, polycarbonate resin, styrene copolymer resin, or polystyrene blend resin, acrylic resin, polystyrene resin, polyamide having affinity with these resins A series resin or the like may be used. Further, when the material of the transfer object is a polypropylene resin, a chlorinated polyolefin resin, a chlorinated ethylene-vinyl acetate copolymer resin, a cyclized rubber, a coumarone indene resin, or the like may be used. As a method for forming the adhesive layer 60, a normal printing method such as a gravure printing method or a screen printing method, or a coating method such as a gravure coating method or a roll coating method may be used.
　上記の材料からなる各層を有する加飾シートを加熱して、本発明の艶消金属調加飾シートを製造する。まず、成形品１００などの被転写物上に、金属薄膜層にマイクロクラックが発生していない加飾シート１０を配置し（図３（ａ）参照）、加熱されたロール９０によって加飾シート１０に熱と圧力を加える（図３（ｂ）参照）。 The decorative sheet having the respective layers made of the above materials is heated to produce the matte metallic tone decorative sheet of the present invention. First, a decorative sheet 10 in which a microcrack is not generated in a metal thin film layer is placed on an object to be transferred such as a molded product 100 (see FIG. 3A), and the decorative sheet 10 is heated by a heated roll 90. Heat and pressure are applied to (see FIG. 3B).
　ロールによって加飾シートに加えられる熱の温度は１７０～２４０℃とすることができ、圧力は０．１～１．０ＭＰａとすることができる。 The temperature of heat applied to the decorative sheet by the roll can be 170 to 240 ° C., and the pressure can be 0.1 to 1.0 MPa.
　ロールによる加熱によって加飾シートが延伸され、金属薄膜層に均等にマイクロクラックを発生させることができる。すなわちロールによる加熱によって、加飾シート１０は艶消金属調加飾シート１１にすることができる。また、ロールによる加圧によって加飾シートはさらに延伸される。この作用によって、加熱時よりも均等にマイクロクラックを発生させることができる。 The decorative sheet is stretched by heating with a roll, and microcracks can be evenly generated in the metal thin film layer. That is, the decoration sheet 10 can be made into the matte metal tone decoration sheet 11 by the heating by a roll. Further, the decorative sheet is further stretched by pressurization with a roll. By this action, microcracks can be generated more uniformly than when heating.
　艶消金属調加飾シート１１が離型層を有するものであれば、艶消金属調加飾シート１１の基材シート２０を剥離でき、艶消金属調加飾シート１１の転写層を成形品表面に転写することで艶消金属調の装飾を有する成形品を得ることができる。さらに艶消金属調加飾シート１１が離型層および剥離層を有するものであれば、艶消金属調加飾シート１１の基材シート２０を剥離した後、成形品をたとえば紫外線に当てることで剥離層を硬化することができる。すなわち表面硬度が高く、艶消金属調の装飾を有する成形品を得ることができる。マイクロクラックが均等に発生した金属薄膜層が成形品外面に位置する場合には、成形加工後に塗装によって保護層を形成してもよい。 If the matte metal tone decorative sheet 11 has a release layer, the base material sheet 20 of the matte metal tone decorating sheet 11 can be peeled off, and the transfer layer of the matte metal tone decorating sheet 11 is formed into a molded product. By transferring to the surface, a molded product having a matte metallic decoration can be obtained. Furthermore, if the matte metal tone decorative sheet 11 has a release layer and a release layer, after peeling the base material sheet 20 of the matte metal tone decorating sheet 11, the molded product is exposed to, for example, ultraviolet rays. The release layer can be cured. That is, it is possible to obtain a molded article having a high surface hardness and a matte metallic decoration. When the metal thin film layer in which microcracks are generated uniformly is located on the outer surface of the molded product, a protective layer may be formed by painting after the molding process.
　ロールによる加熱および加圧によって艶消金属調加飾シート１１の転写層が成形品１００に転写され、艶消金属調の装飾を有する成形品を得ることができる。 The transfer layer of the matte metallic tone decorative sheet 11 is transferred to the molded product 100 by heating and pressurizing with a roll, and a molded product having a matte metallic tone decoration can be obtained.
　なお、加飾シート１０は上記の材質から選択された基材シート２０およびアンカー層３０を含むため、加熱によって延伸され、たとえば１６０℃で３分加熱した時の加熱収縮率を２．０％以上とすることができる。そのように加熱によって延伸しやすいため、金属薄膜層を積層した後の乾燥工程などでもマイクロクラックは発生するが、金属薄膜層に均等に発生することはなく、上記の加熱工程を経ることで均等にマイクロクラックを発生させることができ、本発明の艶消金属調加飾シート１１を得ることができる。 In addition, since the decorative sheet 10 includes the base material sheet 20 and the anchor layer 30 selected from the above materials, the heat shrinkage rate when stretched by heating and heated at 160 ° C. for 3 minutes, for example, is 2.0% or more. It can be. As it is easy to stretch by heating, microcracks are generated even in the drying process after laminating the metal thin film layer, but it does not occur evenly in the metal thin film layer. Microcracks can be generated, and the matte metallic tone decorative sheet 11 of the present invention can be obtained.
＜第二実施形態＞
　次に第二実施形態について説明する。 <Second embodiment>
Next, a second embodiment will be described.
（概要）
　金型２００のうち可動側２２０へ加飾シート１０を送り込み（図４（ａ）参照）、クランプ部材２３０などで固定した後、可動側のキャビティ内を真空吸引して加飾シートをキャビティ表面に密着させ、金型を閉じて固定側２１０から溶融樹脂１１０をキャビティへ射出して加飾シート１０に熱と圧力を加える（図４（ｂ）参照）。なお、加飾シート１０は第一実施形態と同じものを使用するとよい。 (Overview)
The decorative sheet 10 is fed into the movable side 220 of the mold 200 (see FIG. 4A), fixed with the clamp member 230 and the like, and then the inside of the movable side cavity is vacuumed to bring the decorative sheet to the cavity surface. The mold is closed, the molten resin 110 is injected into the cavity from the fixed side 210, and heat and pressure are applied to the decorative sheet 10 (see FIG. 4B). In addition, the decorating sheet 10 is good to use the same thing as 1st embodiment.
（加飾シートを送り込む方法）
　加飾シート１０を可動側２２０へ送り込む方法としては、枚葉の加飾シートを１枚ずつ送り込んでもよいし、長尺の加飾シートの必要部分を間欠的に送り込んでもよい。長尺の加飾シートを使用する場合、加飾シートを送り込むには位置決め機構を有する送り装置を使用して、加飾シートの図柄層と可動側２２０のキャビティとの見当が一致するようにするとよい。 (Method to send decorative sheet)
As a method of sending the decorative sheet 10 to the movable side 220, a single sheet of decorative sheet may be sent one by one, or a necessary part of a long decorative sheet may be sent intermittently. When a long decorative sheet is used, a feeding device having a positioning mechanism is used to send the decorative sheet, so that the register of the decorative sheet design layer and the cavity of the movable side 220 coincide with each other. Good.
（射出樹脂）
　射出樹脂としては、ポリスチレン系樹脂、ポリオレフィン系樹脂、ＡＢＳ樹脂、ＡＳ樹脂、ＡＮ樹脂などの汎用樹脂を挙げることができる。また、ポリフェニレンオキシド・ポリスチレン系樹脂、ポリカーボネート系樹脂、ポリアセタール系樹脂、アクリル系樹脂、ポリカーボネート変性ポリフェニレンエーテル樹脂、ポリブチレンテレフタレート樹脂、ポリブチレンテレフタレート樹脂、超高分子量ポリエチレン樹脂などの汎用エンジニアリング樹脂や、ポリスルホン樹脂、ポリフェニレンサルファイド系樹脂、ポリフェニレンオキシド系樹脂、ポリアリレート樹脂、ポリエーテルイミド樹脂、ポリイミド樹脂、液晶ポリエステル樹脂、ポリアリル系耐熱樹脂などのスーパーエンジニアリング樹脂を使用することもできる。さらに、ガラス繊維や無機フィラーなどの補強材を添加した複合樹脂も使用できる。 (Injection resin)
Examples of the injection resin include general-purpose resins such as polystyrene resin, polyolefin resin, ABS resin, AS resin, and AN resin. In addition, general engineering resins such as polyphenylene oxide / polystyrene resins, polycarbonate resins, polyacetal resins, acrylic resins, polycarbonate-modified polyphenylene ether resins, polybutylene terephthalate resins, polybutylene terephthalate resins, ultrahigh molecular weight polyethylene resins, and polysulfone Super engineering resins such as resins, polyphenylene sulfide resins, polyphenylene oxide resins, polyarylate resins, polyetherimide resins, polyimide resins, liquid crystal polyester resins, and polyallyl heat-resistant resins can also be used. Furthermore, composite resins to which reinforcing materials such as glass fibers and inorganic fillers are added can also be used.
　溶融樹脂によって加飾シートに加えられる熱の温度は２００～３２０℃とすることができ、圧力は１９～５０ＭＰａとすることができる。 The temperature of heat applied to the decorative sheet by the molten resin can be 200 to 320 ° C., and the pressure can be 19 to 50 MPa.
　射出される溶融樹脂による加熱によって加飾シートが延伸され、金属薄膜層に均等にマイクロクラックを発生させることができる。すなわち溶融樹脂による加熱によって、加飾シート１０は艶消金属調加飾シート１１にすることができる。また溶融樹脂による加圧によって加飾シートはさらに延伸される。この作用によって加熱時よりも均等にマイクロクラックを発生させることができる。 The decorative sheet is stretched by heating with the injected molten resin, and microcracks can be generated uniformly in the metal thin film layer. That is, the decorative sheet 10 can be made into a matte metallic tone decorative sheet 11 by heating with a molten resin. Further, the decorative sheet is further stretched by pressurization with a molten resin. By this action, microcracks can be generated more uniformly than during heating.
　この実施形態においては、射出される溶融樹脂による加熱および加圧によって艶消金属調加飾シート１１と樹脂とを一体成形することができ、艶消金属調の装飾を有する成形品を得ることができる。また、一体成形することによって、成形品の寸法安定性を確保することができる。 In this embodiment, the matte metal tone decorative sheet 11 and the resin can be integrally formed by heating and pressurizing with the injected molten resin, and a molded article having a matte metal tone decoration can be obtained. it can. Moreover, the dimensional stability of a molded product can be ensured by integral molding.
　艶消金属調加飾シート１１が離型層を有するものであれば、艶消金属調加飾シート１１の基材シート２０を剥離でき、艶消金属調加飾シート１１の転写層を成形品表面に転写することで艶消金属調の装飾を有する成形品を得ることができる。さらに艶消金属調加飾シート１１が離型層および剥離層を有するものであれば、艶消金属調加飾シート１１の基材シート２０を剥離した後、成形品をたとえば紫外線に当てることで剥離層を硬化することができる。すなわち表面硬度が高く、艶消金属調の装飾を有する成形品を得ることができる。マイクロクラックが均等に発生した金属薄膜層４０が成形品外面に位置する場合には、成形加工後に塗装によって保護層を形成してもよい。 If the matte metal tone decorative sheet 11 has a release layer, the base material sheet 20 of the matte metal tone decorating sheet 11 can be peeled off, and the transfer layer of the matte metal tone decorating sheet 11 is formed into a molded product. By transferring to the surface, a molded product having a matte metallic decoration can be obtained. Furthermore, if the matte metal tone decorative sheet 11 has a release layer and a release layer, after peeling the base material sheet 20 of the matte metal tone decorating sheet 11, the molded product is exposed to, for example, ultraviolet rays. The release layer can be cured. That is, it is possible to obtain a molded article having a high surface hardness and a matte metallic decoration. When the metal thin film layer 40 in which microcracks are uniformly generated is located on the outer surface of the molded product, a protective layer may be formed by painting after the molding process.
＜第三実施形態＞
　続いて第三実施形態について説明する。射出樹脂、加飾シート、金型、固定側、可動側、加飾シートを送り込む方法については第二実施形態と同じものを使用するとよい。 <Third embodiment>
Next, the third embodiment will be described. About the method to send injection resin, a decorating sheet, a metal mold | die, a fixed side, a movable side, and a decorating sheet, it is good to use the same thing as 2nd embodiment.
（概要）
　金型２００のうち可動側２２０へ加飾シート１０を送り込み、クランプ部材２３０などで固定した後、熱源３００を用いて加飾シートを予備加熱する（図５（ａ）参照）。次に、可動側のキャビティ内を真空吸引して加飾シートをキャビティ表面に密着させ、金型を閉じて固定側２１０から溶融樹脂１１０をキャビティへ射出して加飾シート１０に熱と圧力を加える（図５（ｂ）参照）。 (Overview)
After the decorative sheet 10 is fed to the movable side 220 of the mold 200 and fixed by the clamp member 230 or the like, the decorative sheet is preheated using the heat source 300 (see FIG. 5A). Next, the inside of the movable cavity is vacuum-sucked to bring the decorative sheet into close contact with the cavity surface, the mold is closed, the molten resin 110 is injected from the fixed side 210 into the cavity, and heat and pressure are applied to the decorative sheet 10. It adds (refer FIG.5 (b)).
（予備加熱の方法）
　予備加熱の方法としては、赤外線ヒーター、電気ヒーター、高周波誘導、ハロゲンランプ、マイクロ波、スチームなどの高温誘導体、レーザーなどの方法を用いることができる。熱源によって加飾シートに加えられる熱の温度は１００～２５０℃とすることができる。予備加熱によって加飾シートが延伸され、金属薄膜層に均等にマイクロクラックを発生させることができる。すなわち予備加熱によって、加飾シート１０は艶消金属調加飾シート１１にすることができる。 (Preheating method)
As a preheating method, an infrared heater, an electric heater, a high frequency induction, a halogen lamp, a microwave, a high temperature derivative such as steam, a laser, or the like can be used. The temperature of heat applied to the decorative sheet by the heat source can be 100 to 250 ° C. The decorative sheet is stretched by preheating, and microcracks can be uniformly generated in the metal thin film layer. That is, the decorative sheet 10 can be made into a matte metallic tone decorative sheet 11 by preheating.
　この実施形態において、溶融樹脂による加熱によって艶消金属調加飾シートが延伸され、溶融樹脂による加圧によって艶消金属調加飾シートはさらに延伸される。これらの作用によって、予備加熱時よりも均等にマイクロクラックを発生させることができる。 In this embodiment, the matte metal tone decorative sheet is stretched by heating with the molten resin, and the matte metal tone decorating sheet is further stretched by pressurization with the molten resin. By these actions, microcracks can be generated more uniformly than during preheating.
　また、射出される溶融樹脂による加熱および加圧によって艶消金属調加飾シート１１と樹脂とを一体成形することができ、艶消金属調の装飾を有する成形品を得ることができる。一体成形することによって、成形品の寸法安定性を確保することができる。マイクロクラックが均等に発生した金属薄膜層４０が成形品外面に位置する場合には、成形加工後に塗装により保護層を形成してもよい。 Also, the matte metal tone decorative sheet 11 and the resin can be integrally formed by heating and pressurizing with the injected molten resin, and a molded product having a matte metal tone decoration can be obtained. By integrally molding, the dimensional stability of the molded product can be ensured. When the metal thin film layer 40 in which microcracks are uniformly generated is located on the outer surface of the molded product, a protective layer may be formed by painting after the molding process.
＜第四実施形態＞
　最後に第四実施形態について説明する。射出樹脂、加飾シート、予備加熱の方法、金型、固定側、可動側、加飾シートを送り込む方法については第三実施形態と同じものを使用するとよい。 <Fourth embodiment>
Finally, a fourth embodiment will be described. The injection resin, the decorative sheet, the preheating method, the mold, the fixed side, the movable side, and the method for feeding the decorative sheet may be the same as those in the third embodiment.
（概要）
　予備成形用金型４００に加飾シート１０を送り込み、熱源３００によって予備加熱する（図６（ａ）参照）。次に艶消金属調加飾シートを真空吸引し、または艶消金属調加飾シートに圧縮空気を与えることによって艶消金属調加飾シートを予備成形する（図６（ｂ）参照）。予備成形した艶消金属調加飾シートの不要部分をトリミングし、トリミングした艶消金属調加飾シートを可動側２２０のキャビティに挿入する（図６（ｃ）参照）。挿入した艶消金属調加飾シートは、クランプ部材や真空吸引などによって固定してもよい。続いて金型を閉じて固定側２１０から溶融樹脂１１０をキャビティへ射出して艶消金属調加飾シートに熱と圧力を加える（図６（ｄ）参照）。 (Overview)
The decorative sheet 10 is fed into the preforming mold 400 and preheated by the heat source 300 (see FIG. 6A). Next, the matte metal tone decorating sheet is preliminarily formed by vacuum suction or applying compressed air to the matte metal tone decorating sheet (see FIG. 6B). Unnecessary portions of the preformed matte metallic decoration sheet are trimmed, and the trimmed matte metallic decoration sheet is inserted into the cavity of the movable side 220 (see FIG. 6C). The inserted matte metallic decoration sheet may be fixed by a clamp member or vacuum suction. Subsequently, the mold is closed, the molten resin 110 is injected into the cavity from the fixed side 210, and heat and pressure are applied to the matte metal tone decorative sheet (see FIG. 6D).
　この実施形態において、溶融樹脂による加熱によって艶消金属調加飾シートが延伸され、溶融樹脂による加圧によって艶消金属調加飾シートはさらに延伸される。これらの作用によって、予備加熱時よりも均等にマイクロクラックを発生させることができる。 In this embodiment, the matte metal tone decorative sheet is stretched by heating with the molten resin, and the matte metal tone decorating sheet is further stretched by pressurization with the molten resin. By these actions, microcracks can be generated more uniformly than during preheating.
　射出される溶融樹脂による加熱および加圧によって艶消金属調加飾シート１１と樹脂とを一体成形することができ、艶消金属調の装飾を有する成形品を得ることができる。また一体成形することによって、成形品の寸法安定性を確保することができる。マイクロクラックが均等に発生した金属薄膜層４０が成形品外面に位置する場合には、成形加工後に塗装により保護層を形成してもよい。 The matte metal tone decorative sheet 11 and the resin can be integrally formed by heating and pressurizing with the molten resin to be injected, and a molded product having a matte metal tone decoration can be obtained. Moreover, the dimensional stability of a molded product can be ensured by integral molding. When the metal thin film layer 40 in which microcracks are uniformly generated is located on the outer surface of the molded product, a protective layer may be formed by painting after the molding process.
　以上のようにして、艶消金属調加飾シートを得ることができる。 As described above, a matte metallic decoration sheet can be obtained.
　　１０：加飾シート
　　２０：基材シート
　　３０：アンカー層
　　４０：マイクロクラックが均等に発生した金属薄膜層
　　５０：図柄層
　　６０：接着層
　　７０：離型層
　　８０：剥離層
　　９０：ロール
　１００：成形品
　１１０：溶融樹脂
　２００：金型
　２１０：固定側
　２２０：可動側
　２３０：クランプ部材
　３００：熱源
　４００：予備成形用金型 DESCRIPTION OF SYMBOLS 10: Decorating sheet 20: Base material sheet 30: Anchor layer 40: Metal thin film layer in which the micro crack generate | occur | produced uniformly 50: Design layer 60: Adhesive layer 70: Release layer 80: Release layer 90: Roll 100: Molded article 110: Molten resin 200: Mold 210: Fixed side 220: Movable side 230: Clamp member 300: Heat source 400: Pre-molding mold

Claims (15)

  1. 　延伸性を有する基材シート上に少なくとも金属薄膜層が部分的に積層された加飾シートを加熱して、前記金属薄膜層に均等にマイクロクラックを発生させて艶消金属調にすることを特徴とする艶消金属調加飾シートの製造方法。 A decorative sheet in which at least a metal thin film layer is partially laminated on a stretchable base sheet is heated to uniformly generate microcracks in the metal thin film layer so that the matte metal tone is obtained. A method for producing a matte metallic tone decorative sheet.
  2. 　前記加飾シートは、前記金属薄膜層上に接着層が積層されたものである請求項１に記載の艶消金属調加飾シートの製造方法。 The method for producing a matte metal tone decorative sheet according to claim 1, wherein the decorative sheet is obtained by laminating an adhesive layer on the metal thin film layer.
  3. 　前記加飾シートは、前記基材シート上に絵柄層が積層されたものである請求項１または２に記載の艶消金属調加飾シートの製造方法。 The method for producing a matte metal tone decorative sheet according to claim 1 or 2, wherein the decorative sheet is obtained by laminating a pattern layer on the substrate sheet.
  4. 　前記加飾シートは、前記基材シートと前記金属薄膜層との間にアンカー層が積層されたものである請求項１～３のいずれか一項に記載の艶消金属調加飾シートの製造方法。 The matte metal-tone decorative sheet according to any one of claims 1 to 3, wherein the decorative sheet is obtained by laminating an anchor layer between the base sheet and the metal thin film layer. Method.
  5. 　前記加飾シートは、前記基材シート上に離型層が積層されたものである請求項１～４のいずれか一項に記載の艶消金属調加飾シートの製造方法。 The method for producing a matte metallic tone decorative sheet according to any one of claims 1 to 4, wherein the decorative sheet is obtained by laminating a release layer on the base sheet.
  6. 　前記加飾シートは、前記基材シート上に被転写物の最外面となる剥離層が積層されたものである請求項１～５のいずれか一項に記載の艶消金属調加飾シートの製造方法。 The matte metal tone decorative sheet according to any one of claims 1 to 5, wherein the decorating sheet is obtained by laminating a release layer serving as an outermost surface of a transfer object on the base sheet. Production method.
  7. 　前記加飾シートの加熱は、
    　被転写物上に前記加飾シートを配置する工程と、
    　前記加飾シートに圧力および熱を加える工程と
    　を含むものである請求項５または６に記載の艶消金属調加飾シートの製造方法。     The heating of the decorative sheet,
    Arranging the decorative sheet on the transfer object;
    The method for producing a matte metallic tone decorative sheet according to claim 5 or 6, comprising a step of applying pressure and heat to the decorative sheet.
  8. 　前記加飾シートの加熱は、
    　金型内に前記加飾シートを送り込む工程と、
    　前記金型を閉じて、射出される溶融樹脂により前記加飾シートに圧力および熱を加える工程と
    　を含むものである請求項１～６のいずれか一項に記載の艶消金属調加飾シートの製造方法。     The heating of the decorative sheet,
    Sending the decorative sheet into the mold;
    The matte metal decoration sheet manufacturing method according to any one of claims 1 to 6, further comprising a step of closing the mold and applying pressure and heat to the decoration sheet by an injected molten resin. Method.
  9. 　前記加飾シートの加熱は、
    　金型内に前記加飾シートを送り込む工程と、
    　前記加飾シートを予備加熱する工程と、
    　前記金型を閉じて、射出される溶融樹脂により前記加飾シートに圧力および熱を加える工程と
    　を含むものである請求項１～４のいずれか一項に記載の艶消金属調加飾シートの製造方法。     The heating of the decorative sheet,
    Sending the decorative sheet into the mold;
    Preheating the decorative sheet;
    The manufacturing of the matte metallic tone decorative sheet according to any one of claims 1 to 4, further comprising: closing the mold and applying pressure and heat to the decorative sheet by a molten resin to be injected. Method.
  10. 　前記加飾シートの加熱は、
    　前記加飾シートを予備加熱する工程と、
    　前記加飾シートを予備成形する工程と、
    　金型内に予備成形した前記加飾シートを送り込む工程と、
    　前記金型を閉じて、射出される溶融樹脂により前記加飾シートに圧力および熱を加える工程と
    　を含むものである請求項１～４のいずれか一項に記載の艶消金属調加飾シートの製造方法。     The heating of the decorative sheet,
    Preheating the decorative sheet;
    A step of preforming the decorative sheet;
    Sending the preformed decorative sheet into a mold;
    The manufacturing of the matte metallic tone decorative sheet according to any one of claims 1 to 4, further comprising: closing the mold and applying pressure and heat to the decorative sheet by a molten resin to be injected. Method.
  11. 　延伸性を有する基材シートと、前記基材シート上に部分的に積層された金属薄膜層とを少なくとも含み、前記金属薄膜層が加熱により均等に発生させられたマイクロクラックを有することにより艶消金属調を示すことを特徴とする艶消金属調加飾シート。 It includes at least a stretchable substrate sheet and a metal thin film layer partially laminated on the substrate sheet, and the metal thin film layer has a microcrack generated uniformly by heating. A matte metallic decoration sheet characterized by showing a metallic tone.
  12. 　前記金属薄膜層が、前記基材シートよりも低い延伸性を有する金属からなるものである請求項１１に記載の艶消金属調加飾シート。 The matte metal tone decorative sheet according to claim 11, wherein the metal thin film layer is made of a metal having lower stretchability than the base sheet.
  13. 　前記金属薄膜層がアルミニウムまたはクロムからなるものである請求項１１または１２に記載の艶消金属調加飾シート。 The matte metal tone decorative sheet according to claim 11 or 12, wherein the metal thin film layer is made of aluminum or chromium.
  14. 　前記基材シートと前記金属薄膜層との間にアンカー層が形成されたものである請求項１１～１３のいずれか一項に記載の艶消金属調加飾シート。 The matte metal finish decorative sheet according to any one of claims 11 to 13, wherein an anchor layer is formed between the base sheet and the metal thin film layer.
  15. 　前記アンカー層が、前記金属薄膜層よりも高い延伸性を有する材質からなるものである請求項１４に記載の艶消金属調加飾シート。 The matte metal tone decorative sheet according to claim 14, wherein the anchor layer is made of a material having higher stretchability than the metal thin film layer.
PCT/JP2016/052889 2015-03-20 2016-02-01 Matte metal tone decorative sheet and manufacturing method therefor WO2016152252A1 (en)

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