JP6104588B2 - Three-dimensional decorative molded product and manufacturing method thereof - Google Patents

Description

  INDUSTRIAL APPLICABILITY The present invention is used for decoration on the surface of molded products such as automobile interior parts, home appliance decoration parts, display panels, operation panels, amusement device operation parts and cases, communication equipment operation parts and cases. In particular, in the manufacturing process of molded products, it is possible to easily align the main sheet with the sheet that three-dimensionally represents the decorative part, and there is no problem such as pattern displacement even during injection molding. The present invention relates to a decorative molded product and a manufacturing method thereof.

  Conventionally, molding with three-dimensional decoration on the surface of molded products such as automobile interior parts, home appliance decoration parts, display panels, operation panels, amusement machine operation parts and cases, communication equipment operation parts and cases, etc. When manufacturing a product, a pattern is decorated on one sheet, and the position of the sheet is aligned in the mold at the time of insert molding.

  In addition, there is a method in which a separate decorative sheet is bonded to a main sheet with an adhesive layer in advance, the sheet bonded in a mold is set, and insert molding is performed (Patent Document 1).

  Also, when manufacturing a molded product that feels as if a separate member or the like is attached to one molded product, that is, a molded product that has a different body feel, a different design from the overall design is added to the part that has a different body feel. A separate body sensation was expressed by performing insert molding using one decorated sheet and forming a groove as a recess at the boundary where different designs were decorated at the time of insert molding.

JP 2000-330489 A

  However, when the sheet is aligned in the mold at the time of insert molding, the film is stretched due to molten resin heat at the time of insert molding. In particular, when a large three-dimensional shape is formed, there is a problem in that the film tends to be non-uniformly stretched, so that the positional deviation between the design and the mold shape tends to occur.

  In addition, a separate decorative sheet is bonded to the main sheet with an adhesive layer, and a separate decorative sheet once bonded by the injection pressure at the time of injection molding is used even if it is aligned in the mold during insert molding. There was a problem that displacement caused by movement.

  Furthermore, a molded product that is insert-molded using a sheet in which a different pattern is decorated on a single sheet becomes a molded product due to problems such as the sheet being stretched due to heat at the time of insert molding, resulting in misalignment. It was not possible to have a groove that was a large concave-convex shape. For this reason, there is a problem that it is difficult to manufacture a molded product having a separate feeling.

  Therefore, the present invention is to provide a three-dimensional decorative molded product that does not cause misalignment when producing a large three-dimensional molded product, and has a separate feeling, and a method for manufacturing the same. .

  In order to solve the above problems, the present invention is configured as follows.

  According to the first aspect of the present invention, a method for producing a three-dimensional decorative molded product includes a three-dimensional sub sheet formed by preforming a sub sheet having an adhesive layer into a three-dimensional shape, and a main sheet having a larger area than the sub sheet. Prepare a three-dimensional main sheet formed by preforming a part of the three-dimensional sub-sheet into the same three-dimensional shape, and then paste the three-dimensional sub sheet so as to match the three-dimensional shape of the three-dimensional main sheet. The forming step, and then placing the three-dimensional sub-sheet side of the three-dimensional decorative sheet so as to match the three-dimensional shape of the cavity surface of the injection mold, injecting and cooling the molten resin, It comprised so that it might consist of a process of obtaining a three-dimensional decorating sheet.

  Further, the sub-sheet is a base sheet, an adhesive layer formed under one surface of the base sheet, a decorative layer formed on the surface of the base sheet, and a surface of the decorative layer You may comprise so that the formed coating layer may be provided.

  Further, the sub-sheet may be configured to include a transparent sheet, a decorative layer formed on one surface of the transparent sheet, and an adhesive layer formed on the surface of the decorative layer.

  According to the second aspect of the present invention, a method for manufacturing a three-dimensional decorative molded product is performed by preforming a sub-sheet having a protective sheet on an adhesive layer to form a three-dimensional sub-sheet, A three-dimensional sub-sheet formed by peeling and a three-dimensional main sheet formed by preforming a part of a main sheet having a larger area than the sub-sheet into the same three-dimensional shape as the three-dimensional sub sheet are prepared. To form the three-dimensional decorative sheet by pasting the three-dimensional main sheet so as to match the three-dimensional shape of the three-dimensional main sheet, and then the three-dimensional sub-sheet side of the three-dimensional decorative sheet to match the three-dimensional shape of the cavity surface of the injection mold The molten resin is injected and cooled, and is configured to include a step of obtaining an integrally formed base material and a three-dimensional decorative sheet.

  Further, the sub-sheet was formed on the surface of the base sheet, the adhesive layer formed under one side of the base sheet, the protective sheet formed under the adhesive layer, and the base sheet You may comprise so that a decoration layer and the coating layer formed on the surface of a decoration layer may be provided.

  Further, the sub-sheet includes a transparent sheet, a decorative layer formed on one surface of the transparent sheet, an adhesive layer formed on the surface of the decorative layer, and a protective sheet on the surface of the adhesive layer. You may comprise.

  The sub sheet having the protective sheet may be configured such that the sub sheet excluding the protective sheet is cut.

  Moreover, you may comprise a main sheet so that a base material sheet, the decorating layer provided in the upper surface of the base material sheet, and the coating layer provided on the decorating layer may be provided.

  The three-dimensional shape is an uneven shape, and may be configured such that a groove-like recess is formed around the recess.

  According to the third aspect of the present invention, the three-dimensional decorative molded product includes a three-dimensional sub sheet having a three-dimensional shape, and a three-dimensional main sheet positioned to match the three-dimensional shape of the three-dimensional sub sheet under the three-dimensional sub sheet. And a base material formed under the three-dimensional main sheet.

   By providing the same three-dimensional shape with the two sheets of the three-dimensional main sheet and the three-dimensional sub-sheet, the restriction on the size of the three-dimensional shape is relaxed, and a three-dimensional molded product can be obtained.

  According to the first aspect of the present invention, a method for producing a three-dimensional decorative molded product includes a three-dimensional sub sheet formed by preforming a sub sheet having an adhesive layer into a three-dimensional shape, and a main having a larger area than the sub sheet. Prepare a three-dimensional main sheet formed by preforming a part of the sheet into the same three-dimensional shape as the three-dimensional sub sheet, and then paste the three-dimensional sub sheet so as to match the three-dimensional shape of the three-dimensional main sheet The step of forming a three-dimensional decorative sheet, and then the three-dimensional sub-sheet side of the three-dimensional decorative sheet is arranged so as to match the three-dimensional shape of the cavity surface of the injection mold, cooled by injecting molten resin, Since it comprised so that it might consist of the process of obtaining the base material and the three-dimensional decorating sheet which were integrally molded, there exists an effect that the molded article with position shift prevention is obtained.

  That is, since the main sheet has the same three-dimensional shape as the three-dimensional sub sheet, the three-dimensional main sheet can be matched with the three-dimensional main sheet, so that the positional deviation at the time of bonding is eliminated. Further, when the three-dimensional decorative sheet is set, the shape in the injection mold becomes the same as that of the cavity surface, so that the displacement due to the injection pressure during injection molding is eliminated. Furthermore, since the three-dimensional sub-sheet and the three-dimensional main sheet that are to be separately provided with a three-dimensional decoration are used, the positional deviation due to the elongation of the film is also eliminated.

  According to the second aspect of the present invention, a method for manufacturing a three-dimensional decorative molded product is performed by preforming a sub-sheet having a protective sheet on an adhesive layer to form a three-dimensional sub-sheet, and the protection of the three-dimensional sub-sheet Preparing a three-dimensional main sheet formed by preforming the three-dimensional sub-sheet formed by peeling the sheet and a part of the main sheet having a larger area than the sub-sheet into the same three-dimensional shape as the three-dimensional sub-sheet; Next, a step of forming the three-dimensional decorative sheet by pasting the three-dimensional sub sheet so as to match the three-dimensional shape of the three-dimensional main sheet, and then the three-dimensional sub sheet side of the three-dimensional decorative sheet is placed on the cavity of the injection mold It is arranged so as to match the three-dimensional shape of the surface, and is composed of a process of injecting a molten resin and cooling to obtain an integrally formed base material and a three-dimensional decorative sheet Since, there is an effect that the displacement prevention.

  That is, since the main sheet has the same three-dimensional shape as the three-dimensional sub sheet, the three-dimensional main sheet can be matched with the three-dimensional main sheet, so that the positional deviation at the time of bonding is eliminated. Also, when setting a three-dimensional decorative sheet, the shape in the injection mold becomes the same as the cavity surface, so even when molding a large three-dimensional shape, the displacement due to the injection pressure during injection molding is eliminated. . In addition, since the three-dimensional sub-sheet and the three-dimensional main sheet, which are parts to be separately decorated in three dimensions, are used, the positional deviation due to the elongation of the film is also eliminated. Furthermore, by providing a protective sheet or a protective film on the sub-sheet, the jig is not soiled at the time of preforming, which facilitates production.

  According to the third aspect of the present invention, the three-dimensional shape of the three-dimensional main sheet is a concavo-convex shape, and a groove-shaped concave portion is formed around the concave portion. There is an effect that can be obtained.

  In other words, since the three-dimensional main sheet and the three-dimensional sub-sheet are formed using two decorative sheets, the three-dimensional main sheet can have a large uneven shape without worrying about positional displacement due to elongation. Therefore, it is possible to obtain a molded product having a different feeling by enlarging the groove, which is a recess, to match the two sheets and insert molding.

  According to the fourth aspect of the present invention, the three-dimensional decorative molded product includes a three-dimensional sub sheet having a three-dimensional shape, and a three-dimensional main sheet positioned below the three-dimensional sub sheet so as to match the three-dimensional shape of the three-dimensional sub sheet. And a base material formed under the three-dimensional main sheet, there is an effect that a molded article having a three-dimensional effect can be obtained.

  That is, since the three-dimensional sub-sheet and the three-dimensional main sheet that are to be separately provided with a three-dimensional decoration are used, the positional deviation due to the elongation of the film is eliminated. Moreover, since the restriction | limiting of the magnitude | size of a solid shape is eased by using two sheets, a molded article with a three-dimensional effect can be obtained.

It is sectional drawing which shows one Example of the manufacturing process of the three-dimensional decoration molded product of this invention. It is sectional drawing which shows one Example of the sub sheet | seat of this invention. It is sectional drawing which shows one Example of the sub sheet | seat of this invention. It is sectional drawing which shows one Example in which the subsheet containing the half cut of this invention forms a solid subsheet. It is sectional drawing which shows one Example of the solid main sheet | seat of this invention. It is sectional drawing which shows one Example of the manufacturing process of the three-dimensional decoration molded product which has a groove | channel in the three-dimensional shape of the main sheet | seat of this invention. It is sectional drawing which shows one Example of the three-dimensional decoration molded product of this invention. It is sectional drawing which shows one Example of the three-dimensional decoration molded product which has a groove | channel in the three-dimensional shape of the main sheet | seat of this invention. It is a perspective partial sectional view which shows one Example of the three-dimensional decoration molded product which has a groove | channel in the three-dimensional shape of the main sheet | seat of this invention.

   Hereinafter, a three-dimensional decorative molded product 30 and a manufacturing method thereof according to an embodiment of the present invention will be described with reference to the drawings.

  The manufacturing method of the three-dimensional decorative molded product 30 of the present invention includes a three-dimensional subsheet 5 formed by preforming the subsheet 3 having the adhesive layer 1 into a three-dimensional shape, and a main sheet 4 having an area larger than the subsheet 3. A three-dimensional main sheet formed by preforming a part of the three-dimensional sub sheet 5 into the same three-dimensional shape as the three-dimensional sub sheet 5 is prepared, and then the three-dimensional sub sheet 5 is pasted so as to match the three-dimensional shape of the three-dimensional main sheet 6. And forming the three-dimensional decorative sheet 7 and then arranging the three-dimensional sub-sheet 5 side of the three-dimensional decorative sheet 7 so as to match the three-dimensional shape of the cavity 9 surface of the injection mold, It comprised so that it might consist of the process which inject | pours and cools and obtains the base material and the three-dimensional decorating sheet 7 which were integrally molded (refer FIG. 1).

  First, the three-dimensional decorative sheet 7 used for forming the three-dimensional decorative molded product 30 will be described.

  The three-dimensional decoration sheet 7 is obtained by bonding the three-dimensional sub sheet 5 so as to match the three-dimensional main sheet 6 having the same three-dimensional shape as the three-dimensional sub sheet 5 (see FIG. 1-e).

  In order to form the three-dimensional sub-sheet 5, the sub-sheet 3 is preformed into a three-dimensional shape (see FIGS. 1a and 1b). As the sub-sheet 3, a base sheet 2, an adhesive layer 1 formed under one surface of the base sheet 2, a decorative layer 12 formed on the base sheet 2, and a decoration A thing provided with the coat layer 11 formed on the layer 12 is good to use (refer FIG. 2-a). The base sheet 2, the decorative layer 12, and the coat layer 13 are design sheets 20.

  As a manufacturing method of the sub-sheet 3, for example, there are the following methods. There is a method in which the decorative layer 12 and the coat layer 11 are sequentially laminated on the upper surface of the base material sheet 2 and the adhesive layer 1 is formed on the lower surface of the base material sheet 2. Further, there is a method in which a coating layer 11 is formed on one surface of the transparent sheet 13 and a transfer sheet in which a decorative layer 12 is sequentially laminated on the surface of the coating layer 11 is used. The transfer sheet is thermally transferred to the base sheet 2 so that the decorative layer 12 side is grounded to the base sheet 2. Further, the transparent sheet 13 is peeled off, and the adhesive layer 1 is formed on the lower surface of the base sheet 2. However, when the transparent sheet 13 is not peeled off, the coat layer 11 may not be formed.

  The material of the base sheet 2 does not need to be transparent, for example, acrylic resin, polyester resin, polypropylene resin, polyethylene resin, polyethylene terephthalate resin, polycarbonate resin, ABS resin, nylon resin, vinylon resin, Resin sheets such as acetate resin, polyamide resin, polyacrylic resin, polyvinyl chloride resin, metal foil such as aluminum foil and copper foil, cellulose sheet such as glassine paper, coated paper, cellophane, or each of the above sheets Those used as the base material sheet 2 of a normal transfer material, such as a composite of the above, can be used. In order to improve the shape followability at the time of preforming, it is particularly preferable to use an ABS resin. The thickness of the base sheet 2 can be 50 to 650 [mu] m, and it is preferable to use a sheet having a thickness of 350 to 550 [mu] m in view of good handling properties and good molding stability.

  The decorative layer 12 may be composed of only a design layer, composed of only a metal thin film layer, or a combination of a design layer and a metal thin film layer. The material of the pattern layer is a resin such as polyvinyl chloride resin, polyamide resin, polyester resin, polyacrylic resin, polyurethane resin, polyvinyl acetal resin, polyester urethane resin, cellulose ester resin, alkyd resin, etc. It is preferable to use a colored ink containing a suitable color pigment or dye as a colorant. As a pattern layer forming method, a normal printing method such as an offset printing method, a gravure printing method, or a screen printing method may be used. In particular, the offset printing method and the gravure printing method are suitable for performing multicolor printing and gradation expression. In the case of a single color, a coating method such as a gravure coating method, a roll coating method, or a comma coating method may be employed. The design layer may be provided entirely or partially depending on the design to be expressed.

  The metal thin film layer is for expressing the metallic luster as the decorative layer 12, and is formed by a vacuum deposition method, a sputtering method, an ion plating method, a plating method or the like. Metals such as aluminum, nickel, gold, platinum, chromium, iron, copper, tin, indium, silver, titanium, lead, and zinc, and alloys or compounds thereof are used depending on the metallic luster color to be expressed. As an example of forming a partial metal thin film layer, a solvent-soluble resin layer is formed on a portion that does not require the metal thin film layer, and then a metal thin film is formed on the entire surface, followed by solvent cleaning. There is a method of removing an unnecessary metal thin film together with a solvent-soluble resin layer. The solvent often used in this case is water or an aqueous solution. As another example, there is a method in which a metal thin film is formed on the entire surface, a resist layer is then formed on a portion where the metal thin film is to be left, and etching is performed with acid or alkali to remove the resist layer. . In addition, when providing a metal thin film layer, in order to improve the adhesiveness of another transfer layer and a metal thin film layer, you may provide a front anchor layer and a rear anchor layer. As materials for the front anchor layer and the rear anchor layer, two-component cured urethane resin, thermosetting urethane resin, melamine resin, cellulose ester resin, chlorine-containing rubber resin, chlorine-containing vinyl resin, acrylic resin, epoxy It is preferable to use a vinyl resin, a vinyl copolymer resin resin, or the like. Examples of methods for forming the front anchor layer and the rear anchor layer include coating methods such as gravure coating, roll coating, and comma coating, printing methods such as gravure printing, and screen printing.

  The coat layer 11 functions as a protective layer that protects the decorative layer 12. As a material for the coat layer 11, a thermosetting resin, a two-component reaction curable resin, an electron beam curable resin, a thermoplastic resin, or the like may be selected and used. Specifically, a melamine resin, a urea resin, a polyester resin, a polyurethane resin, or the like may be used. As the coat layer 11, a layer having high adhesion to the decorative layer 12 can be selected. Further, a matting material such as extender pigment may be mixed in the resin constituting the coat layer 11. Examples of the method for forming the coating layer 11 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 coating method, and a screen printing method. The thickness of the coat layer 11 is preferably 5 to 30 μm, particularly preferably 8 to 15 μm.

  The coat layer 11 may use a transparent sheet 13 in order to increase the surface friction strength. If comprised in this way, the shape stability of the solid sub-sheet 5 after preforming will improve. The transparent sheet 13 is only required to be transparent and have heat followability. For example, acrylic resin, polyester resin, polypropylene resin, vinyl chloride resin, polyethylene resin, polyethylene terephthalate resin, polycarbonate resin, nylon resin, vinylon resin, Any resin such as acetate resin, polyethylene resin, polyamide resin, polyacrylic resin, and polyvinyl chloride resin may be used. Particularly preferred is an acrylic resin. The transparent sheet 13 having a thickness of 50 to 650 μm can be used, and considering that the handling property and the molding stability are good, it is preferable to use the one having a thickness of 350 to 550 μm.

  Further, when the transparent sheet 13 is used for the coat layer 11, a material suitable for the material of the transparent sheet 13 is appropriately used as the material of the rear anchor layer that improves the adhesion with the decorative layer 12. For example, when the material of the transparent sheet 13 is an acrylic resin, an acrylic resin may be used. Further, when the material of the transparent sheet 13 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 transparent sheet 13 is polypropylene resin, chlorinated polyolefin resin, chlorinated ethylene-vinyl acetate copolymer resin, cyclized rubber, and coumarone indene resin can be used. Examples of the method for forming the adhesive layer 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.

  The adhesive layer 1 is a layer for adhering to the surface of the three-dimensional main sheet 6, and a resin suitable for the material of the base sheet 2 is used as appropriate. For example, acrylic resin, synthetic rubber, modified rubber or the like may be used. Examples of the method for forming the adhesive layer 1 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 coating method, and a screen printing method. The thickness of the pressure-sensitive adhesive layer 1 is preferably 5 to 150 μm, and 40 to 100 μm is preferable in consideration of good handling properties and molding stability.

  The sub sheet 3 may be one without the base sheet 2 and may have the following configuration. The sub-sheet 3 may be configured to include the transparent sheet 13, the decorative layer 12 formed on one surface of the transparent sheet 13, and the adhesive layer 1 formed on the decorative layer 12. (See FIG. 2-b). At this time, the transparent sheet 13, the decorative layer 12, and the adhesive layer 1 may be the same as those used for the material of the sub-sheet 3. The transparent sheet 13 and the decorative layer 12 are design sheets 20.

  Further, the sub sheet 3 may be a sheet in which a protective sheet 14 is formed under the adhesive layer 1 (see FIG. 3). If comprised in this way, it can manufacture, without deteriorating the function of the adhesion layer 1. FIG. Moreover, it can manufacture by the roll to roll system which winds up again in roll shape, laminating | stacking the subsheet 3 continuously. Since it can manufacture continuously, it contributes to the improvement of productivity.

  The protective sheet 14 may be of any formability or stretchability, such as a polyvinyl chloride film, a polyethylene film, an amorphous or low crystalline polyester film, an amorphous or low crystalline polypropylene film, Examples include butylene terephthalate film (G-PET), unstretched or low-stretchable ethylene vinyl alcohol film, and heat-resistant polyethylene film. The protective sheet 14 having a thickness of 20 to 1000 μm can be used, and a thickness of 70 to 100 μm is particularly preferable.

  When the protective sheet 14 is provided, the protective sheet 14 must be removed after the sub-sheet 3 is preformed into the three-dimensional sub-sheet 5. The method for removing the protective sheet 14 is not limited as long as the protective sheet 14 can be removed from the three-dimensional sub-sheet 5. In particular, it is preferable that the three-dimensional sub-sheet 5 is cut to a portion excluding the protective sheet 14 (half-cut 15). With this configuration, the protective sheet 14 can be easily removed from the three-dimensional sub-sheet 5 (see FIG. 4).

  The method for cutting the sheet is not particularly limited. For example, there are a flat punching method using a mainspring blade, a Thomson blade, an NC engraving blade, a titanium blade, a flexible die, a cylindrical cutting method using a die cut roll, a magnet cylinder and a corrosive blade, a laser cutting method, and the like.

  As a method of preforming the sub-sheet 3 into a three-dimensional shape, a method of forming a normal plastic sheet into a desired three-dimensional shape, such as a vacuum forming method or a vacuum / pressure method, may be used. The mold used in the vacuum forming apparatus or the vacuum / pneumatic apparatus has an uneven part having the same shape as the cavity 9 forming surface of a mold for insert molding for forming a resin molded product having a desired three-dimensional shape, and is a sub-sheet. There is a type in which 3 is in close contact with the inner surface of the concavo-convex portion. Alternatively, there is a type having an uneven part that is a copy of the cavity 9 forming surface of the insert molding die, and in which the sub-sheet 3 is in close contact with the outer surface of the uneven part. The vacuum forming apparatus has a vacuum suction hole 11. In order to facilitate processing of the sub-sheet 3, the sub-sheet 3 may be heated and softened during vacuum forming.

  Next, in order to form the three-dimensional main sheet 6, the main sheet 4 is preformed so that the same three-dimensional shape as the three-dimensional sub-sheet 5 is formed at least partially (see FIGS. 1-c and d). As the main sheet 4, a sheet provided with the base material sheet 2, a decorative layer 12 provided on the upper surface of the base material sheet 2, and a coat layer 11 provided on the decorative layer 12 may be used. (See FIG. 5). The material for the base sheet 2, the decorative layer 12, and the coat layer 11 may be the same as that used for the sub-sheet 3. The preform of the main sheet 4 may be the same as that of the sub sheet 3.

  The three-dimensional shape at the time of preforming the main sheet 4 may be a shape having irregularities. In this way, when the three-dimensional sub sheet 5 is bonded to the same three-dimensional shape of the three-dimensional main sheet 6 and insert-molded, the end of the three-dimensional sub sheet 5 is hidden in the groove 31, so that the positional deviation of the three-dimensional sub sheet 5 is shifted. Even if it occurs, it is possible to prevent the end portion of the three-dimensional sub-sheet 5 from being seen (see FIG. 6).

  The deeper the groove 31 is, the more the body feel can be obtained. However, in general, a molded product obtained by insert molding with one sheet is likely to be misaligned due to film elongation or the like. For this reason, it is difficult to form the deep groove 31. In the present invention, by using the three-dimensional sub-sheet 5 of another sheet as a part where a separate body feeling is desired, the need to consider positional deviation due to film elongation is reduced. Therefore, the groove 31 that is a three-dimensional concave portion of the three-dimensional main sheet 6 can be formed deeply. The groove 31 of a normal in-mold molded product can be formed only within a range of 0.3 to 0.8 mm and a depth of 0.3 to 0.5 mm. On the other hand, the width of the groove 31 of the three-dimensional main sheet 6 formed by preforming the main sheet 4 can be, for example, 0.65 mm and a depth of 1.0 mm.

  The three-dimensional decorative sheet 7 is formed by laminating the same three-dimensional shape sub-sheet 5 with the same three-dimensional shape portion as the three-dimensional sub-sheet 5 of the three-dimensional main sheet 6 (see FIG. 1-e).

  Hereinafter, the manufacturing method of the three-dimensional decoration molded product 30 of this invention using the three-dimensional decoration sheet 7 is demonstrated.

  It arrange | positions in the cavity 9 of a metal mold | die for insert molding so that it may correspond to the three-dimensional shape of the three-dimensional sub sheet | seat 5 surface of the three-dimensional decorating sheet 7, a mold is closed, and molding resin is inject | emitted (refer FIG. 1-f). By the injection pressure at the time of injection, the three-dimensional sub-sheet 5 and the three-dimensional main sheet 6 are firmly bonded, and the three-dimensional decorative sheet 7 and the substrate 8 that is the cooled resin are integrally formed, thereby forming the three-dimensional decorative molded product 30. (See FIG. 7) is formed.

  Examples of insert molding dies include injection molding and compression molding dies. The mold for insert molding includes a fixed mold having a gate portion for injecting molding resin, a movable mold, and the like, and the fixed mold and the movable mold are closed so that they are surrounded by the fixed mold 9 and the movable mold cavity 9. In some cases, a single cavity or a plurality of cavities 9 are formed. The cavity 9 may form a hole in the resin molded product. The transfer to the mold for insert molding may be performed automatically by grasping the three-dimensional decorating sheet 7 with a robot, or may be performed manually. The mounting of the three-dimensional decorative sheet 7 may be fixed by suction from the cavity 9 of the injection mold.

  Examples of the molding resin include general-purpose resins such as polystyrene resin, polyolefin resin, ABS resin, AS resin, and AN resin. In addition, polyphenylene oxide / polystyrene resin, polycarbonate resin, polyacetal resin, polypropylene resin, polyacrylic resin, polycarbonate modified polyphenylene ether resin, polybutylene terephthalate resin, polybutylene terephthalate resin, ultra high molecular weight polyethylene resin, etc. Engineering resins, polysulfone resins, polyphenylene sulfide resins, polyphenylene oxide resins, polyarylate resins, polyetherimide resins, polyimide resins, liquid crystal polyester resins, polyallyl heat-resistant resins, and other super engineering resins, polycarbonate / acrylonitrile-butadiene-styrene copolymers Polymer alloy resins such as (PC / ABS) can also be used. Furthermore, composite resins to which reinforcing materials such as glass fibers and inorganic fillers are added can also be used. The molded resin may be colored or uncolored.

  FIG. 9 shows a three-dimensional decorative molded product 30 obtained by cutting off a part of the long product of the present invention thus obtained. Since the three-dimensional decorative molded product 30 of the present invention has the same three-dimensional shape as the sub-sheet 3 in a part of the main sheet 4, alignment during molding becomes easy. Therefore, since the three-dimensional decorative molded product 30 can be easily manufactured and a large uneven shape can be expressed, the molded product having a three-dimensional design can be obtained.

  Although the present invention has been fully described in connection with preferred embodiments with reference to the accompanying drawings, various variations and modifications will be apparent to those skilled in the art. Such changes and modifications are to be understood as being included therein, so long as they do not depart from the scope of the present invention according to the appended claims.

  The present invention is used for decoration on the surface of molded products such as automobile interior parts, home appliance decoration parts, display panels, operation panels, amusement device operation parts and cases, communication equipment operation parts and cases, etc. Can be industrially useful.

DESCRIPTION OF SYMBOLS 1 Adhesive layer 2 Substrate sheet 3 Sub sheet 4 Main sheet 5 Solid sub sheet 6 Solid main sheet 7 Solid decor sheet 8 Substrate 9 Cavity 10 Core 11 Coat layer 12 Decor layer 13 Transparent sheet 14 Protective sheet 15 Half cut 20 Design Sheet 30 Three-dimensional decorative molded product 31 Groove

Claims (3)

A step of preparing a three-dimensional sub-sheet in which a sub-sheet having an adhesive layer is formed into a three-dimensional shape;
A main sheet having an area larger than the sub-sheet is three-dimensionally such that a part thereof has the same three-dimensional shape as the three-dimensional sub-sheet, and a groove is formed around the three-dimensional shape. Preparing a three-dimensional main sheet molded into a shape;
Pasting the three-dimensional sub-sheet through the adhesive layer to the three-dimensional main sheet so as to match the three-dimensional shape of the three-dimensional main sheet, and forming a three-dimensional decorative sheet;
The three-dimensional decorative sheet is arranged in an injection mold having a cavity surface having a shape that matches the three-dimensional shape of the three-dimensional decorative sheet on the three-dimensional sub sheet side so that the three-dimensional sub sheet side is in contact with the cavity surface. Process,
A method of manufacturing a three-dimensional decorative molded product, comprising: clamping a mold, injecting a molten resin, cooling, and forming a base material, and integrating the three-dimensional decorative sheet with the base material. The sub-sheet further has a protective sheet on the adhesive layer,
The three-dimensional object according to claim 1, wherein the step of forming the three-dimensional decorative sheet removes the protective sheet from the sub-sheet, and then bonds the three-dimensional sub-sheet to the three-dimensional main sheet via the adhesive layer. A method for producing a decorative molded product. A step of preparing a three-dimensional sub-sheet in which a sub-sheet having an adhesive layer and a protective sheet bonded onto the adhesive layer is formed into a three-dimensional shape;
Preparing a three-dimensional main sheet in which a main sheet having a larger area than the sub-sheet is formed into a three-dimensional shape so that a portion thereof has the same three-dimensional shape as the three-dimensional sub sheet;
Remove the protective sheet from the three-dimensional sub-sheet and paste the three-dimensional sub-sheet to the three-dimensional main sheet via the adhesive layer so as to match the three-dimensional shape of the three-dimensional main sheet. Forming, and
The three-dimensional decorative sheet is arranged in an injection mold having a cavity surface having a shape that matches the three-dimensional shape of the three-dimensional decorative sheet on the three-dimensional sub sheet side so that the three-dimensional sub sheet side is in contact with the cavity surface. Process,
The mold is clamped, the molten resin is injected and cooled, and a base material is formed, and the three-dimensional decorative sheet is integrated with the base material, and
The method of manufacturing a three-dimensional decorative molded product, wherein the sub-sheet is half-cut leaving the protective sheet.

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