JP2018167511A - Method for manufacturing decorative formed article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a decorative molded product having a design having irregularities in depth and having excellent surface smoothness. SOLUTION: A first laminating step of laminating a first film having a plurality of convex portions on a molded product by vacuum / pressure forming, vacuum forming or pressure forming, and the above-mentioned by vacuum / pressure forming, vacuum forming or pressure forming. A second lamination step of laminating the pressure-sensitive adhesive layer and the second film on the first film so that the pressure-sensitive adhesive layer is on the first film side, and the film of the pressure-sensitive adhesive layer and the second film The total thickness is 500 μm or more. [Selection] Figure 5

Description

The present invention relates to a method for producing a decorative molded product.

Conventionally, by pasting a film having a design surface to a molded product, a design such as a pattern, a pattern, or a character is imparted to the molded product and decorated. As a method for producing a decorative molded product, a method of pasting a decorative film on the surface of a molded product having a complicated surface shape such as a three-dimensional curved surface using vacuum forming, vacuum pressure forming, or the like is known. .

For example, in Patent Document 1, an adhesive sheet in which an adhesive layer is disposed on one surface of a stretchable release film is subjected to vacuum molding, pressure molding, or vacuum / pressure molding so that the adhesive layer is on the side of an uneven molded product. After the laminating step (1) for laminating on the surface of the concavo-convex molded product, the stretchable release film is peeled off to expose the surface of the adhesive layer, and then vacuum forming or pressure forming is performed. Alternatively, a desired decorative film can be freely laminated via the adhesive layer by performing a lamination step (2) of laminating the decorative film on the surface of the adhesive layer of the concavo-convex molded article by vacuum / pressure forming. A method for producing a laminated molded product that can be attached) is disclosed.

Japanese Patent Application Laid-Open No. 2015-196289

Among decorative molded products, a design having irregularities in the depth is required for members for motorcycles, wallpaper for construction, and the like. Here, in the said patent document 1, by performing the lamination process (2) which laminates | stacks a decoration film on the surface of an adhesive bond layer after the lamination process (1) which laminates | stacks an adhesive bond layer on the surface of an uneven | corrugated molded article, It is disclosed that the adhesive layer and the decorative film can follow the unevenness of the uneven molded product, and the adhesive layer and the decorative film can be adhered to the entire surface of the uneven molded product. However, the above Patent Document 1 does not disclose any technique for forming a design with unevenness in depth. Further, there is no disclosure about a technique for improving the surface smoothness of the decorative molded product.

This invention is made | formed in view of the said present condition, and it aims at providing the manufacturing method of the decorative molded product excellent in the smoothness of the surface, having a design with an unevenness | corrugation in depth.

The inventors of the present invention have made various studies on a method for manufacturing a decorative molded product having a design having unevenness in depth and having excellent surface smoothness. As a result, after the first film having a plurality of convex portions is laminated on the molded product by vacuum / pressure forming, vacuum forming or pressure forming, the pressure-sensitive adhesive layer and the second layer are further formed by vacuum / pressure forming, vacuum forming or pressure forming. It has been found that by stacking two films, a design with irregularities in the depth can be formed. Moreover, it discovered that the smoothness of the surface of a decorative molded product can be improved by making the sum total of the film thickness of the said adhesive layer and said 2nd film into a specific range, and completed this invention.

The method for producing a decorative molded product of the present invention includes a first lamination step of laminating a first film having a plurality of convex portions on a molded product by vacuum / pressure forming, vacuum forming or pressure forming, and vacuum / pressure forming, A second lamination step of laminating the pressure-sensitive adhesive layer and the second film on the first film such that the pressure-sensitive adhesive layer is on the first film side by vacuum forming or pressure forming, and the pressure-sensitive adhesive. The total thickness of the layer and the second film is 500 μm or more.

The height of the plurality of convex portions of the first film is preferably 10 μm or more and 55 μm or less.

The pressure-sensitive adhesive layer is preferably an acrylic pressure-sensitive adhesive layer or a urethane-based pressure-sensitive adhesive layer.

At least one of the first film and the second film preferably contains polyvinyl chloride.

The second film is preferably subjected to inkjet printing.

The first film is preferably a calendered colored film.

The molded product is preferably a member for exterior of a motorcycle.

ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of the decorative molded product excellent in surface smoothness can be provided, having a design with an unevenness | corrugation in depth.

(A)-(c) is a schematic diagram for demonstrating the method of laminating | stacking a 1st film on the surface of a molded article in a 1st lamination process. (D)-(f) is a schematic diagram for demonstrating the method of laminating | stacking a 1st film on the surface of a molded article in a 1st lamination process. (A)-(c) is a schematic diagram for demonstrating the method of laminating | stacking an adhesive layer and a 2nd film on the surface of a 1st film in a 2nd lamination process. (D)-(f) is a schematic diagram for demonstrating the method of laminating | stacking an adhesive layer and a 2nd film on the surface of a 1st film in a 2nd lamination process. It is the expanded cross-section schematic diagram which showed an example of the decorative molded product manufactured by the manufacturing method of the decorative molded product of this invention.

The method for producing a decorative molded product of the present invention includes a first lamination step of laminating a first film having a plurality of convex portions on a molded product by vacuum / pressure forming, vacuum forming or pressure forming, and vacuum / pressure forming, A second lamination step of laminating the pressure-sensitive adhesive layer and the second film on the first film such that the pressure-sensitive adhesive layer is on the first film side by vacuum forming or pressure forming, and the pressure-sensitive adhesive. The total thickness of the layer and the second film is 500 μm or more. In the present invention, in each of the first laminating step and the second laminating step, vacuum / pressure forming, vacuum forming, or pressure forming is used. Therefore, the shape of the surface of the molded product has a curved surface or a protrusion. Even if it is a shape, it is possible to produce a decorative molded product having a smooth surface and having a design with irregularities in the depth in a short time.

[First lamination process]
The 1st lamination process of this invention is a process of laminating | stacking the 1st film which has a some convex part on a molded article by vacuum pressure forming, vacuum forming, or pressure forming. By laminating the first film on the molded product, an uneven design can be formed on the molded product. In addition, by performing the first lamination process by vacuum / pressure forming, vacuum forming or pressure forming, even if the surface shape of the molded product is a three-dimensional shape having a curved surface or a protrusion, the first film is placed on the molded product. Lamination can be performed in a short time.

(Vacuum / Pneumatic forming, Vacuum forming or Pressure forming)
Vacuum forming is a method of sticking a film on a molded product using vacuum, softening the film, placing it on the molded product, and evacuating the space between the film and the molded product, This is a method of forming a film by adsorbing it to a molded product. An example of vacuum forming will be described. First, a film and a molded product are set in a molding chamber in an atmospheric pressure state. Next, the film is heated to a desired temperature using a heater, the film is softened, the gap between the molded product and the film is evacuated, and the film is adhered to the molded product to be molded. Then, it cools, a vacuum can be cancelled | released and a decorative molded product can be taken out. In addition, when setting a vacuum degree high with respect to the film which can be extended | stretched at normal temperature, a film can also be closely_contact | adhered to a molded article at normal temperature.

Compressed air molding is a method of sticking a film on a molded product using compressed air, softening the film, placing it on the molded product, and flowing a gas from the film side toward the molded product, and above the film. In this method, the space is pressurized and the film is pressure-bonded to the molded product. As the gas, air or an inert gas such as nitrogen gas, argon gas, or helium gas can be used. An example of pressure forming will be described. First, a film and a molded product are set in a molding chamber in an atmospheric pressure state. Next, the film is heated to a desired temperature using a heater, the film is softened, and the film is stretched by the force of compressed air so as to conform to the molded product. Thereafter, it is cooled, the compressed air is released, and the decorative molded product can be taken out.

The vacuum / pressure forming is a method in which the above vacuum forming and pressure forming are combined, and can be performed using, for example, a vacuum / pressure forming apparatus. An example of vacuum / pressure forming will be described. First, a film and a molded product are set in a molding chamber under atmospheric pressure. Next, after the molding chamber is airtight, vacuum suction is performed using a vacuum tank, and the molding chamber is vacuumed. Subsequently, while maintaining the vacuum state, the film is heated to a desired temperature using a heater to soften the film. After bringing the molded product into contact with the softened film, the vacuum in the molding chamber is released to atmospheric pressure, and compressed air is introduced from the pressurized air tank into the molding chamber to press the film against the molded product. Paste along. Thereafter, it is cooled, the compressed air is released, and the decorative molded product can be taken out.

Hereinafter, the method of laminating the first film on the surface of the molded product will be described in detail by taking the case of using vacuum / pressure forming as an example. The vacuum forming can be performed in the same manner as the vacuum / pressure forming described below, except that the step of pressurizing with compressed air is not performed. Moreover, pressure forming can be performed similarly to the vacuum pressure forming shown below except not performing the process of making it into a vacuum state.

(A)-(f) shown in FIG.1 and FIG.2 is a schematic diagram for demonstrating the method of laminating | stacking a 1st film on the surface of a molded article. In FIG.1 and FIG.2, the convex part which a 1st film has is expanded and shown in figure.

A vacuum / pressure forming apparatus 100 shown in FIGS. 1 and 2 includes upper and lower forming chambers (upper forming chamber 110 and lower forming chamber 120), and these are formed on the surface of the molded product 10 by vacuum / pressure forming in the forming chamber. The first film 20 having a plurality of convex portions is laminated.

First, in a state where the upper molding chamber 110 is raised (not shown), the molded product 10 is set on the table 130 in the lower molding chamber 120, and the first film 20 laminated on the molded product 10 is placed on the upper surface of the lower molding chamber 120. set. Thereafter, the upper molding chamber 110 is lowered by the driving device 140, and the upper and lower molding chambers are respectively airtight (see FIG. 1A).

Next, each of the upper and lower molding chambers is vacuumed from the vacuum tank 150 through the pipe 160 to be in a vacuum state (very low pressure state) (see FIG. 1B).

Thereafter, the heater 170 is turned on to heat the first film 20 (see FIG. 1C). As a result, the first film 20 is softened and can be attached along the surface shape of the molded product 10.

Next, the table 130 in the lower molding chamber 120 is raised by the driving device 140, and the molded product 10 is brought into contact with the softened first film 20 (see FIG. 2D).

Subsequently, the vacuum on the upper molding chamber 110 side is released to an atmospheric pressure state (the inside of the lower molding chamber 120 is in a vacuum state), and further compressed air is introduced into the upper molding chamber 110 from the pressurized air tank 180, whereby the first film 20 is pressed against the molded product 10 and laminated along its shape (see FIG. 2 (e)). As a result, the first film 20 is laminated on the surface of the molded product 10.

Thereafter, the upper molding chamber 110 and the lower molding chamber 120 are each returned to the atmospheric pressure state, the upper molding chamber 110 is raised, and the molded product 10 covered with the first film 20 is taken out (see FIG. 2 (f)). .

By using such a method, the molded article 10 to which the first film 20 is attached can be obtained.

The first lamination step is preferably performed by vacuum / pressure forming, and more preferably performed using a TOM forming machine (NGF-0406-T) manufactured by Fuse Vacuum Co., Ltd.

It is preferable that the heating temperature in a 1st lamination process is 80 degreeC or more and 160 degrees C or less. When the heating temperature in the first lamination step is 80 ° C. or higher and 160 ° C. or lower, the first film 20 can be laminated on the molded product 10 without crushing the convex portions of the first film 20. If the heating temperature in the first laminating step is less than 80 ° C., the first film 20 may not be sufficiently softened and the first film 20 may not be attached along the shape of the molded product 10. On the other hand, when the heating temperature in the first laminating step exceeds 160 ° C., the first film 20 is excessively softened, and the convex portion may be crushed in the laminating step. The heating temperature in the first lamination step is more preferably 100 ° C. or higher, and further preferably 110 ° C. or higher. The heating temperature in the first lamination step is more preferably 140 ° C. or less, and further preferably 130 ° C. or less. Thus, it is preferable that the heating temperature in the 1st lamination process of this invention is low compared with the heating temperature in the case of laminating | stacking a general film. By lowering the heating temperature (for example, 130 ° C. or lower), the first film 20 can be laminated on the molded product 10 without breaking the shape of the convex portions of the first film 20.

The heating time in the first lamination step is preferably 0.1 minutes or more and 60 minutes or less. When the heating time in the first laminating step is 0.1 minutes or more and 60 minutes or less, the first film 20 can be laminated on the molded product 10 without crushing the convex portions of the first film 20. If the heating time in the first laminating step is less than 0.1 minutes, the first film 20 may not be sufficiently softened, and the first film 20 may not be attached along the shape of the molded product 10. On the other hand, when the heating time in the first laminating step exceeds 60 minutes, the first film 20 is excessively softened, and the convex portion may be crushed in the laminating step. The heating time in the first lamination step is more preferably 1 minute or more, and further preferably 3 minutes or more. The heating time in the first lamination step is more preferably 50 minutes or less, and further preferably 40 minutes or less.

(Molding)
The molded product 10 used in the first laminating step of the present invention is not particularly limited. For example, a bicycle such as a bicycle or a motorcycle; a four-wheeled vehicle such as an automobile or a bus; a vehicle such as a train; a wall surface or floor of a building , Ceilings, roofs, pillars, signboards, doors, gates; helmets; ships; airplanes, aircraft such as helicopters; household items such as furniture and household appliances; Etc., or these parts. The molded article 10 is preferably a molded article having a three-dimensional shape, more preferably a two-wheeled vehicle, a wall surface of a building, or a member thereof, and further preferably a member for exterior of a two-wheeled vehicle. The material of the molded article 10 is not particularly limited, and examples thereof include resin, metal, ceramic, and the like.

The resin is not particularly limited. For example, polyethylene resin, polypropylene resin, polystyrene resin, polyethylene terephthalate resin, polyvinyl alcohol resin, vinyl chloride resin, polyamide resin, polyacetal resin, polycarbonate resin, acrylonitrile / butadiene / styrene (ABS) resin. , Ionomer resins, and resin compositions obtained by adding various additives such as inorganic fibers to these resins. It does not specifically limit as said metal, For example, iron, aluminum, copper, SUS etc. are mentioned.

(First film)
The first film 20 has a plurality of convex portions. When the first film 20 has a plurality of convex portions, it is possible to give a design having irregularities in the depth to the molded product. Here, the design having unevenness in depth refers to a design in which unevenness such as an embossed film is formed not on the surface of the decorative molded product but on the lower layer than the surface of the decorative molded product. In particular, in the present invention, even if the surface of the decorative molded product is touched, the irregularities are not felt, but a design as if the surface of the decorative molded product has irregularities can be imparted.

The first film 20 is not particularly limited as long as it is a stretchable film. Specifically, the materials contained in the first film 20 include polyvinyl chloride; polyolefins such as polyethylene, polypropylene, polybutene, and polybutadiene; polyurethane; poly (meth) acrylate, polyethylene terephthalate (PET), and polybutylene terephthalate. And polyesters such as polyethylene naphthalate, and the above materials may be used alone or in the form of a mixture of two or more. The first film 20 preferably contains polyvinyl chloride. Since polyvinyl chloride has a good elongation when formed into a film and is difficult to break, the first film 20 containing polyvinyl chloride facilitates the attachment to a three-dimensional curved surface.

Examples of the polyvinyl chloride include a homopolymer of vinyl chloride and a copolymer of vinyl chloride and other monomers. Examples of the other monomer include vinyl esters such as vinyl acetate and vinyl propionate; olefins such as ethylene, propylene and styrene; (meth) acrylic acid esters such as methyl acrylate, ethyl acrylate and methyl methacrylate. Maleic acid diesters such as dibutyl maleate and diethyl maleate; fumaric acid diesters such as dibutyl fumarate and diethyl fumarate; vinyl cyanides such as acrylonitrile and methacrylonitrile; vinyl halides such as vinylidene chloride and vinyl bromide; Examples thereof include vinyl ethers such as methyl vinyl ether and ethyl vinyl ether. These may be used alone or in combination of two or more.

The content of the other monomer in the copolymer is usually 50% by weight or less, preferably 10% by weight or less. Among the polyvinyl chlorides, a homopolymer of vinyl chloride is preferable from the viewpoint of obtaining dimensional stability.

The average degree of polymerization of the polyvinyl chloride is not particularly limited, and is adjusted according to the required film hardness and the amount of plasticizer used for adjusting the hardness, and the average degree of polymerization of the polyvinyl chloride. Is preferably 800-1200. By setting it as such an aspect, workability can be improved. In the present specification, the average degree of polymerization of polyvinyl chloride means the average degree of polymerization measured according to JIS K6721 “Testing methods for vinyl chloride resin”.

The first film may contain a plasticizer in addition to polyvinyl chloride. Specific examples of the plasticizer include phthalic acid diesters such as octyl phthalate (di-2-ethylhexyl phthalate (DOP)), dibutyl phthalate and dinonyl phthalate; cyclohexane dicarboxylic acid ester, dioctyl adipate, and sebacic acid. Aliphatic dibasic acid diesters such as dioctyl; phosphoric acid triesters such as tricresyl phosphate and trioctyl phosphate; epoxy plasticizers such as epoxidized soybean oil and epoxy resins; and high-molecular polyester plasticizers.

Examples of the polymer polyester plasticizer include polyalkylene glycol diesters such as polyethylene glycol diester, polypropylene glycol diester, and polyethylene glycol polypropylene glycol diester of phthalic acid; polyethylene glycol diesters of aliphatic dibasic acids such as adipic acid and sebacic acid. Polyalkylene glycol diesters such as polypropylene glycol diester and polyethylene glycol polypropylene glycol diester; These may be used alone or in combination of two or more.

The blending amount of the plasticizer is preferably 5 parts by weight or more and 30 parts by weight or less with respect to 100 parts by weight of the polyvinyl chloride.

A concavo-convex pattern can be imparted to the molded product 10 by the plurality of convex portions of the first film 20. By the first film 20 provided with a plurality of convex portions on the entire surface, a concavo-convex pattern may be imparted to the entire surface of the molded product 10, or the first film 20 on which the plurality of convex portions are formed in a predetermined pattern, You may give the uneven | corrugated pattern which has a predetermined pattern to the molded article 10. FIG.

The height of the plurality of convex portions of the first film is preferably 10 μm or more and 55 μm or less. If the height of the plurality of protrusions exceeds 55 μm, the protrusions provided on the first film 20 may be crushed by the second laminating step described later, and the height of the plurality of protrusions is less than 10 μm. And the depth of the design may be reduced. Therefore, it is possible to form a design with a sense of depth by setting the height of the plurality of convex portions to 10 μm or more and 55 μm or less. The height of the plurality of convex portions is more preferably 15 μm or more, and further preferably 20 μm or more. The height of the plurality of convex portions is more preferably 50 μm or less, and further preferably 45 μm or less. The height of the plurality of convex portions is a difference in height between the apex and the bottom of the convex portion. The heights of the plurality of convex portions are measured by using a dial gauge to measure the thickness from the top of the convex portion to the bottom surface of the first film 20 and the thickness from the bottom portion of the convex portion to the bottom surface of the first film 20. , By calculating the difference between the two.

The film thickness of the first film 20 having the plurality of protrusions, that is, the height difference between the tops of the plurality of protrusions and the bottom surface of the first film 20 is preferably 200 μm or more and 500 μm or less. If the film thickness of the first film 20 is less than 200 μm, the protrusions formed on the first film 20 will break through, and the interface between the first pressure-sensitive adhesive layer 30 and the first film 20 described later will be uneven. There is a case. The film thickness of the first film 20 is more preferably 250 μm or more. The film thickness of the first film 20 is more preferably 450 μm or less.

The convex portion (also referred to as an embossed surface) of the first film 20 was obtained, for example, after the composition containing polyvinyl chloride (also referred to as a polyvinyl chloride composition) was formed by a conventionally known method. The resin film can be formed by inserting the resin film between an embossing roll having a predetermined unevenness on the surface and a back roll and embossing the resin film. As said embossing roll, what is necessary is just to be able to form the embossing surface of the predetermined shape mentioned above.

The first film 20 can be produced using calendar molding. Here, calender molding refers to a method of rolling and molding a raw material resin with a roll. In addition, calendar molding is easy to make the thickness of the resin film uniform, can be formed regardless of the composition of the polyvinyl chloride composition, and is also suitable for forming various sizes such as larger sizes. In addition, since it is easy to handle a small lot, it is preferably used when the first film 20 is formed. Since the first film 20 is a colored film, the design of the decorative molded product can be further enhanced. It is preferable that the 1st film 20 is a colored film produced using calendar molding.

In addition, when a polyvinyl chloride composition is formed by calendar molding, it is preferable to guide the resin film to an embossing roll immediately after the film formation. This is because the resin film immediately after film formation by calender molding is still softened by the heat of the calender roll and is suitable for transferring the irregularities on the surface of the emboss roll.

Examples of the calendar format used for the calendar molding include an inverted L shape, a Z shape, an upright two shape, an L shape, and an inclined three shape. Moreover, what is necessary is just to select the roll temperature at the time of calendar | molding suitably according to the composition at the time of forming the 1st film 20 into a film. When using a polyvinyl chloride composition, the roll temperature during calendar molding is preferably 140 ° C. or higher and 190 ° C. or lower, and more preferably 160 ° C. or higher and 180 ° C. or lower.

(Adhesive layer (first adhesive layer))
When the first film 20 is formed on the molded product 10 in the first lamination step, an adhesive layer may be provided between the molded product 10 and the first film 20. The pressure-sensitive adhesive layer provided between the molded product 10 and the first film 20 is also referred to as a first pressure-sensitive adhesive layer. In the first lamination step, vacuum / pressure forming, vacuum forming or pressure forming may be performed using the first film 20 provided with the first pressure-sensitive adhesive layer on the molded product 10 side, and the first film 20 is laminated. You may perform vacuum pressure forming, vacuum forming, or pressure forming using the molded article 10 which provided the 1st adhesive layer in the side. By setting it as such an aspect, the adhesiveness of the 1st film 20 and the molded article 10 can be improved more.

The type of the first pressure-sensitive adhesive layer is not particularly limited, and examples thereof include an acrylic pressure-sensitive adhesive layer, a polyester-based pressure-sensitive adhesive layer, a urethane-based pressure-sensitive adhesive layer, a rubber-based pressure-sensitive adhesive layer, and a silicone-based pressure-sensitive adhesive layer. It is preferable that it is an acrylic adhesive layer.

Moreover, it is preferable that a 1st adhesive layer is a layer (hot melt adhesive layer) which consists of a hot-melt-adhesive. Since the hot-melt pressure-sensitive adhesive layer does not contain a solvent, it is preferably used when a film is laminated by vacuum / pressure forming, vacuum forming or pressure forming. Examples of the hot-melt pressure-sensitive adhesive layer include polyester-based hot-melt pressure-sensitive adhesive layers, acrylic-based hot-melt pressure-sensitive adhesive layers, rubber-based hot-melt pressure-sensitive adhesive layers, and silicone-based hot-melt pressure-sensitive adhesive layers. More preferably, it is a melt pressure-sensitive adhesive layer.

The film thickness of the first pressure-sensitive adhesive layer is preferably 1 μm or more and 100 μm or less. When the film thickness of the first pressure-sensitive adhesive layer is less than 1 μm, the adhesion of the first film 20 to the molded product 10 may be insufficient. On the other hand, if the film thickness of the first pressure-sensitive adhesive layer exceeds 100 μm, the solvent may not be sufficiently dried when the first pressure-sensitive adhesive layer is formed. As for the film thickness of a 1st adhesive layer, it is more preferable that it is 10 micrometers or more. As for the film thickness of a 1st adhesive layer, it is more preferable that it is 80 micrometers or less.

The first pressure-sensitive adhesive layer may be formed by a conventionally known method. The first pressure-sensitive adhesive may be formed by directly applying the first pressure-sensitive adhesive to the first film 20 or the molded product 10, or once on a separately prepared support. After coating, it may be formed by transferring.

[Second lamination step]
Next, the 2nd lamination process of this invention is demonstrated. The present invention provides a second lamination in which a pressure-sensitive adhesive layer and a second film are laminated on the first film 20 by vacuum / pressure forming, vacuum forming or pressure forming so that the pressure-sensitive adhesive layer is on the first film 20 side. A process. By laminating the pressure-sensitive adhesive layer and the second film on the first film 20, it becomes possible to give depth to the design having the irregularities formed in the first laminating step. Moreover, even if the shape of the surface of the molded article 10 is a three-dimensional shape having a curved surface or a protrusion by performing the second lamination step by vacuum / pressure forming, vacuum forming or pressure forming, the pressure-sensitive adhesive layer and the second film Can be laminated on the first film 20 in a short time. Hereinafter, the pressure-sensitive adhesive layer used in the second lamination step is also referred to as a second pressure-sensitive adhesive layer.

(Vacuum / Pneumatic forming, Vacuum forming or Pressure forming)
The vacuum / pressure forming, vacuum forming or pressure forming in the second lamination step of the present invention is the same as the vacuum / pressure forming, vacuum forming or pressure forming in the first lamination step. The first lamination step and the second lamination step may be performed under the same conditions or different conditions.

(A)-(f) shown in FIG.3 and FIG.4 is a schematic diagram for demonstrating the method of laminating | stacking an adhesive layer and a 2nd film on the surface of a 1st film. In FIG.3 and FIG.4, the convex part which the 1st film 20 has is expanded and shown in figure.

The vacuum / pressure forming apparatus 100 shown in FIGS. 3 and 4 is the same as the vacuum / pressure forming apparatus 100 shown in FIGS. 1 and 2. In the second lamination step, the second pressure-sensitive adhesive layer 40 and the second film 50 are laminated on the surface of the first film 20 by vacuum / pressure forming in the upper molding chamber 110 and the lower molding chamber 120.

First, in a state where the upper molding chamber 110 is raised (not shown), the molded product 10 on which the first film 20 is laminated is set on the table 130 in the lower molding chamber 120 and laminated on the first film 20. The laminated body of the second pressure-sensitive adhesive layer 40 and the second film 50 is set on the upper surface of the lower molding chamber 120 so that the second pressure-sensitive adhesive layer 40 is on the first film 20 side. Thereafter, the upper molding chamber 110 is lowered by the driving device 140, and the upper and lower molding chambers are respectively airtight (see FIG. 3A).

Next, each of the upper and lower molding chambers is evacuated from the vacuum tank 150 through the pipe 160 to be in a vacuum state (very low pressure state) (see FIG. 3B).

Thereafter, the heater 170 is turned on to heat the second adhesive layer 40 and the second film 50 (see FIG. 3C). Thereby, the 2nd film 50 softens and it can stick to the 1st film 20 along a surface shape.

Next, the table 130 in the lower molding chamber 120 is raised by the driving device 140, and the molded product 10 on which the first film 20 is laminated is brought into contact with the second pressure-sensitive adhesive layer 40 (see FIG. 4D).

Subsequently, the vacuum on the upper molding chamber 110 side is released to an atmospheric pressure state (the inside of the lower molding chamber 120 is in a vacuum state), and further compressed air is introduced into the upper molding chamber 110 from the pressurized air tank 180, whereby the second adhesive The agent layer 40 and the second film 50 are pressed against the molded product 10 on which the first film 20 is laminated and laminated along the shape (see FIG. 4E). Thereby, the second pressure-sensitive adhesive layer 40 and the second film 50 are laminated on the surface of the first film 20.

Thereafter, the inside of the upper molding chamber 110 and the lower molding chamber 120 is returned to the atmospheric pressure state, the upper molding chamber 110 is raised, and the molding covered with the first film 10, the second pressure-sensitive adhesive layer 40, and the second film 50 is performed. The product 10 is taken out (see FIG. 2 (f)).

The second lamination step is preferably performed by vacuum / pressure forming. The vacuum / pressure forming can be performed using, for example, a TOM molding machine (NGF-0406-T) manufactured by Fuse Vacuum Co., Ltd.

The first laminating step and the second laminating step do not have to be performed by the same method. For example, the first laminating step is performed by vacuum forming, and the second laminating step is performed by vacuum / pressure forming. However, it is preferable that both the first lamination step and the second lamination step are performed by vacuum / pressure forming.

The heating temperature in the second lamination step is preferably 60 ° C. or higher and 200 ° C. or lower. The 2nd adhesive layer 40 and the 2nd film 50 can be laminated | stacked, without crushing the convex part of the 1st film 20 because the heating temperature in a 2nd lamination process is 60 degreeC or more and 200 degrees C or less. If the heating temperature in the second lamination step is less than 60 ° C., the second film 50 may not be sufficiently softened and the second film 50 may not be attached along the shape of the molded product 10. On the other hand, if the heating temperature in the second lamination step exceeds 200 ° C., the first film 20 laminated on the molded product 10 may be softened, and the convex portion may be crushed in the lamination step. The heating temperature in the second lamination step is more preferably 70 ° C. or higher, and further preferably 80 ° C. or higher. The heating temperature in the second lamination step is more preferably 170 ° C. or less, and further preferably 150 ° C. or less.

The heating time in the second lamination step is preferably 0.1 minutes or more and 60 minutes or less. The second pressure-sensitive adhesive layer 40 and the second film are formed on the first film 20 without crushing the convex portions of the first film 20 by the heating time in the second lamination step being 0.1 minutes or more and 60 minutes or less. 50 can be stacked. If the heating time in the second laminating step is less than 0.1 minutes, the second film 50 may not be sufficiently softened and the second film 50 may not be adhered along the shape of the molded product 10. On the other hand, if the heating time in the second lamination step exceeds 60 minutes, the first film 20 laminated on the molded product 10 may be softened, and the convex portion may be crushed in the lamination step. The heating time in the second lamination step is more preferably 1 minute or more, and further preferably 3 minutes or more. The heating time in the second lamination step is more preferably 50 minutes or less, and further preferably 40 minutes or less.

(Second film)
The second film 50 used in the second lamination step is not particularly limited as long as it is a stretchable film. As a material contained in the 2nd film 50, the thing similar to the material contained in the 1st film 20 can be mentioned as a specific example.

The second film 50 preferably contains polyvinyl chloride. By setting it as such an aspect, the followable | trackability to the molded article 10 edge part of the 2nd film 50 can be improved, and moldability can be improved.

The second film 50 is preferably subjected to inkjet printing. By setting it as such an aspect, the designability of a decorative molded product can be improved. The second film 50 that has been subjected to inkjet printing can be produced, for example, by ejecting solvent-based ink onto the second film 50 using an inkjet printer and solvent-based ink.

The second film 50 may be, for example, a colorless transparent film or a colored transparent film. By making the second film 50 colored and transparent, the design of the decorative molded product can be enhanced. The second film 50 may contain metal particles. By setting it as such an aspect, it becomes possible to give gloss to the 2nd film 50, and can improve the designability of a decorative molded product. In the present specification, transparent means that the total light transmittance is 60% or more, preferably the total light transmittance is 80% or more, more preferably the total light transmittance is 90% or more. . In this specification, the total light transmittance can be measured using, for example, a turbidimeter “HazeMeter NDH2000” manufactured by Nippon Denshoku Industries Co., Ltd. The total light transmittance is measured by a method based on JIS K 7361-1.

Although the manufacturing method of the 2nd film 50 is not specifically limited, For example, after melt-kneading the composition containing the said polyvinyl chloride using a Banbury mixer etc., it can form by calendar processing etc.

(Adhesive layer (second adhesive layer))
The second pressure-sensitive adhesive layer used in the second lamination step of the present invention has a function of improving the adhesion between the first film 20 and the second film 50. The second pressure-sensitive adhesive layer 40 preferably has high transparency. For example, the total light transmittance is preferably 60% or more, the total light transmittance is more preferably 80% or more, and the total light transmittance. Is more preferably 90% or more.

The second pressure-sensitive adhesive layer 40 may be an acrylic pressure-sensitive adhesive layer. The acrylic pressure-sensitive adhesive layer is preferably an acrylic hot-melt pressure-sensitive adhesive layer.

The acrylic pressure-sensitive adhesive layer may be formed by a conventionally known method, and may be formed by directly applying the acrylic pressure-sensitive adhesive layer to the second film 50, or after once applied to a separately prepared support, It may be formed by transcription.

Further, the second pressure-sensitive adhesive layer 40 may be a urethane-based pressure-sensitive adhesive layer. The urethane pressure-sensitive adhesive layer is preferably made of a cured product of a thermosetting polyurethane composition. Examples of the thermosetting polyurethane composition include those containing a polyol component, a polyisocyanate component, and a tackifier. Examples of the urethane-based pressure-sensitive adhesive layer include an optically transparent pressure-sensitive adhesive sheet (OCA (Optical Clear Adhesive) sheet). The OCA sheet is a transparent adhesive sheet used for bonding optical members.

The OCA sheet preferably has a micro rubber A hardness of 0.5 to 25 °. When the micro rubber A hardness of the OCA sheet is less than 0.5 °, the handleability when affixed to the adherend is poor, and the OCA sheet may be deformed. When the hardness of the micro rubber A of the OCA sheet exceeds 25 °, the OCA sheet has low flexibility, and cannot adhere to the surface shape of the adherend when being stuck to the adherend, so that air is caught. This may cause peeling from the adherend. In addition, when the OCA sheet is low in flexibility, it may be difficult to cover unevenness and steps present on the optical member attachment surface, particularly when the OCA sheet is attached to an optical member such as a touch panel. A more preferable upper limit of the micro rubber A hardness of the OCA sheet is 15 °. The micro rubber A hardness is measured using, for example, a micro rubber hardness meter “MD-1 type A” manufactured by Kobunshi Keiki Co., Ltd. The micro rubber hardness tester “MD-1 Type A” is a hardness tester designed and manufactured as a reduced model of about 1/5 of the spring type rubber hardness tester (durometer) A type. It is possible to obtain a measurement value that matches the spring type rubber hardness tester A type.

The OCA sheet is prepared by, for example, producing an OCA sheet in which a first release film that covers one surface of the OCA sheet and a second release film that covers the other surface of the OCA sheet are pasted. The first or second release film can be peeled off and laminated on the second film 50.

As an example of a method for producing an OCA sheet having release films on both sides, a master batch is first prepared by adding a predetermined amount of tackifier to a polyol component and heating and stirring to dissolve. Subsequently, by mixing the obtained master batch, polyol component, polyisocyanate component, and other components such as a catalyst as necessary, and stirring with a mixer or the like, a liquid or gel thermosetting polyurethane composition Get things. Thereafter, the thermosetting polyurethane composition is immediately put into the molding apparatus, and the thermosetting polyurethane composition is crosslinked and cured while being moved while being sandwiched between the first and second release films. The polyurethane composition is semi-cured to obtain a sheet integrated with the first and second release films. Then, the OCA sheet which consists of a hardened | cured material of a thermosetting polyurethane composition is obtained by making it cross-link in a furnace for a fixed time.

In the second lamination step, the total thickness of the second pressure-sensitive adhesive layer 40 and the second film 50 is set to 500 μm or more. If the total film thickness is less than 500 μm, the second film 50 cannot sufficiently cover the irregularities of the first film 20, and the surface smoothness of the decorative molded product cannot be obtained. In the 2nd lamination process of this invention, it becomes possible to improve the smoothness of the surface of a decorative molded product by making the sum total of the film thickness of the 2nd adhesive layer 40 and the 2nd film 50 into 500 micrometers or more. In addition, since the 2nd adhesive layer 40 is provided so that the unevenness | corrugation of the 1st film 20 in which the convex part was formed may be filled, the film thickness of the 2nd adhesive layer 40 is formed in the 1st film 20. The thickness of the second pressure-sensitive adhesive layer 40 and the thickness of the second film 50 is assumed to be the thickness from the bottom of the convex portion to the upper surface of the second pressure-sensitive adhesive layer 40 (the surface opposite to the first film 20 side). The total is the thickness from the bottom of the convex portion formed on the first film 20 to the upper surface of the second film 50 (surface opposite to the second pressure-sensitive adhesive layer 40). That is, the total thickness of the second pressure-sensitive adhesive layer 40 and the second film 50 includes the heights of the plurality of convex portions formed on the first film 20.

The total thickness of the second pressure-sensitive adhesive layer 40 and the second film 50 is preferably 600 μm or more, and more preferably 800 μm or more. The total film thickness of the second pressure-sensitive adhesive layer and the second film is preferably 10,000 μm or less, more preferably 3000 μm or less, and even more preferably 1800 μm or less.

When the 2nd adhesive layer 40 is an acrylic adhesive layer, it is preferable that the film thickness of the 2nd adhesive layer 40 is 20 micrometers or more and 100 micrometers or less. If the thickness of the second pressure-sensitive adhesive layer 40 is less than 20 μm, sufficient adhesion may not be obtained. On the other hand, when the film thickness of the 2nd adhesive layer 40 exceeds 100 micrometers, when forming the 2nd adhesive layer 40, a solvent may not fully be dried. The film thickness of the second pressure-sensitive adhesive layer 40 is more preferably 25 μm or more, and further preferably 30 μm or more. The film thickness of the second pressure-sensitive adhesive layer 40 is more preferably 70 μm or less, and further preferably 50 μm or less.

When the film thickness of the 2nd adhesive layer 40 is 20 micrometers or more and 100 micrometers or less, it is preferable that the film thickness of the 2nd film 50 is 480 micrometers or more and 1700 micrometers or less, and it is more preferable that they are 600 micrometers or more and 1000 micrometers or less. preferable.

When the 2nd adhesive layer 40 is a urethane type adhesive layer, it is preferable that the film thickness of the 2nd adhesive layer 40 is 450 micrometers or more and 1750 micrometers or less. Since the urethane-based pressure-sensitive adhesive layer has high flexibility, when the second pressure-sensitive adhesive layer 40 is a urethane-based pressure-sensitive adhesive layer, by setting the film thickness of the second pressure-sensitive adhesive layer 40 to 450 μm or more and 1750 μm or less, The 2nd adhesive layer 40 can be made to follow the unevenness | corrugation of the 1st film 20, and it can be set as the transparent adhesive layer which has an unevenness | corrugation. The height difference of the unevenness can be set to 50 μm or more, for example. The film thickness of the second pressure-sensitive adhesive layer 40 is more preferably 700 μm or more, and further preferably 1000 μm or more. The film thickness of the second pressure-sensitive adhesive layer 40 is more preferably 1700 μm or less, and further preferably 1650 μm or less.

When the film thickness of the second adhesive layer 40 is 450 μm or more and 1750 μm or less, the film thickness of the second film 50 is preferably 50 μm or more and 1350 μm or less, and more preferably 60 μm or more and 150 μm or less. preferable.

[Decorative molded products]
The decorative molded product obtained by the method for producing a decorative molded product of the present invention will be described. FIG. 5 is an enlarged schematic cross-sectional view showing an example of a decorative molded product manufactured by the method for manufacturing a decorative molded product of the present invention. The decorative molded product 1 obtained by the method for producing a decorative molded product of the present invention is, in order from the molded product 10 side, a first pressure-sensitive adhesive layer 30, a first film 20 having a plurality of convex portions, and a second pressure-sensitive adhesive layer. 40 and the second film 50.

The height A of the convex part which the 1st film 20 has is a height from the vertex of a convex part to a bottom part, as shown in FIG. As shown in FIG. 5, the film thickness B of the first film 20 is a height difference between the apex of the convex portion and the bottom surface of the first film 20. The total sum C of the film thicknesses of the second pressure-sensitive adhesive layer 40 and the second film 50 is, as shown in FIG. 5, from the bottom of the convex portion formed on the first film 20 to the upper surface (first The thickness up to the surface opposite to the second pressure-sensitive adhesive layer 40).

By making the total thickness C of the second pressure-sensitive adhesive layer 40 and the second film 50 provided on the first film 20 to be 500 μm or more, as shown in FIG. It can suppress that a part appears on the surface of the decorative molded product 1. As a result, the decorative molded product 1 has a design with irregularities in the depth and is excellent in surface smoothness.

EXAMPLES Hereinafter, although an Example is hung up and demonstrated in more detail about this invention, this invention is not limited only to these Examples.

Example 1
[Production of first film]
Obtained after adding 15 parts by weight of DINP (Diisonyl phthalate) to 100 parts by weight of polyvinyl chloride having an average degree of polymerization of 800, melt-kneading with a Banbury mixer, and forming through each roll of the calendar body. The resin film was inserted between an emboss roll and a back roll having predetermined irregularities formed on the surface, and the resin film was embossed to obtain a first film having a plurality of convex portions.

The acrylic film (first pressure-sensitive adhesive layer) is applied to the surface opposite to the surface on which the convex portions of the first film are formed, and the first film and the first pressure-sensitive adhesive having a plurality of convex portions. A layer stack was obtained. The height of the plurality of convex portions was 50 μm. The film thickness of the 1st adhesive layer was 40 micrometers, and the film thickness of the 1st film was 300 micrometers. That is, the film thickness from the bottom of the convex part of the first film to the bottom of the first film was 250 μm.

[Production of second film]
An acrylic pressure-sensitive adhesive layer (second pressure-sensitive adhesive layer) is applied on a sheet (second film) of Sviron A100 (thickness: 0.8 mm) manufactured by Sekisui Molding Industry Co., Ltd. A laminate was obtained. The film thickness of the 2nd adhesive layer was 40 micrometers. That is, the total film thickness of the second film and the second pressure-sensitive adhesive layer of Example 1 was 840 μm. Note that esviron A100 used as the second film contained polyvinyl chloride.

[First lamination process]
Using a TOM molding machine (manufactured by Fuse Vacuum Co., Ltd., model number: NGF-0406-T) as a vacuum / pneumatic molding machine, a substrate (molded product) having a cubic surface formed using ABS resin is formed at 120 ° C. The laminated body of the 1st film and the 1st adhesive layer was laminated | stacked at the temperature of, and the 1st lamination process was performed. In the first lamination step, the laminate was laminated on the molded product such that the first pressure-sensitive adhesive layer was on the molded product side.

[Second lamination step]
Next, on the first film, the laminate of the second film and the second pressure-sensitive adhesive layer is laminated so that the second pressure-sensitive adhesive layer is on the first film side, and the above TOM molding machine is used, and 120 ° C. The second lamination step was performed at the temperature of

(Example 2)
In the second lamination step, the same operation as in Example 1 was carried out except that the film thickness of the second film was changed to 100 μm and the second pressure-sensitive adhesive layer was changed to a urethane-based pressure-sensitive adhesive layer having a film thickness of 1500 μm. The decorative molded product of Example 2 was obtained. The total film thickness of the second film and the second pressure-sensitive adhesive layer in Example 2 was 1600 μm.

(Example 3)
In the second lamination step, a decorative molded product of Example 3 was obtained in the same manner as Example 1 except that the film thickness of the second film was changed to 500 μm. The total film thickness of the second film and the second pressure-sensitive adhesive layer in Example 3 was 540 μm.

(Comparative Example 1)
Comparative Example 1 was performed in the same manner as in Example 1 except that the composition of the second film was changed and that the total thickness of the second film and the second pressure-sensitive adhesive layer was changed in the second lamination step. A decorative molded product was obtained. In Comparative Example 1, a film containing polycarbonate having a film thickness of 125 μm was used as the second film. That is, the total film thickness of the second film and the second pressure-sensitive adhesive layer in Comparative Example 1 was 165 μm.

(Comparative Example 2)
Comparative Example 2 in the same manner as in Example 1 except that the composition of the second film was changed and that the total thickness of the second film and the second pressure-sensitive adhesive layer was changed in the second lamination step. A decorative molded product was obtained. In Comparative Example 2, a film containing a polyacrylic acid ester having a film thickness of 125 μm was used as the second film. That is, the total film thickness of the second film and the second pressure-sensitive adhesive layer in Comparative Example 2 was 165 μm.

(Comparative Example 3)
In Comparative Example 3, the first pressure-sensitive adhesive layer, the first film, the second pressure-sensitive adhesive layer, and the second film were laminated on the molded product in a single lamination step. Specifically, the laminate of the first film and the first pressure-sensitive adhesive layer and the laminate of the second film and the second pressure-sensitive adhesive layer used in Example 1 were laminated at atmospheric pressure to form the first film. The first film and the second film are formed on the molded product so that the molded product and the first pressure-sensitive adhesive layer are in contact with each other at a temperature of 120 ° C. using the TOM molding machine. Then, a decorative molded product of Comparative Example 3 was obtained.

About the decorative molded products obtained in Examples 1 to 3 and Comparative Examples 1 to 3, (1) surface smoothness, (2) depth design, and (3) followability to a cubic surface. Evaluation was made by the following method. The results are shown in Table 1.

(1) Surface smoothness The smoothness of the surface of the decorative molded article was evaluated visually according to the following criteria. That is, a fluorescent lamp was placed at a location 1 m away from the decorative molded product, and the surface of the decorative molded product was visually observed with the fluorescent lamp turned on. In addition, in the evaluation of the smoothness of the surface, since the fluorescent lamp is reflected in the decorative molded product, it is possible to easily determine the irregularities on the surface of the decorative molded product by observing the reflected part visually. it can.
◯: Unevenness is not confirmed on the surface of the decorative molded product.
Δ: Concavities and convexities are confirmed on the surface of the decorative molded product, and the height difference of the concavities and convexities is small.
X: Concavities and convexities are confirmed on the surface of the decorative molded product, and the height difference of the concavities and convexities is large.

(2) Depth design property The depth design property of the decorative molded product was evaluated visually according to the following criteria. That is, a fluorescent lamp was placed at a location 1 m away from the decorative molded product, and the design of the depth of the decorative molded product was visually observed with the fluorescent lamp turned on.
A: A transparent second film can be confirmed on the surface of the decorative molded product, and irregularities can be confirmed in the back of the second film.
X: A transparent 2nd film can be confirmed on the surface of a decorative molded product, and an unevenness | corrugation cannot be confirmed in the back of the said 2nd film.

(3) Followability to a cubic curved surface The followability to a cubic curved surface of a decorative molded product was evaluated according to the following criteria.
◯: When a film is laminated on the base material, the film follows up to the end of the base material.
Δ: When laminating the film on the base material, the film follows up to the end of the base material, but some floats are confirmed.
X: When laminating | stacking a film on the said base material, a film does not follow to the edge part of the said base material.

In Comparative Examples 1 to 3, when the film was laminated on the base material, the film did not follow up to the end of the base material, and a laminate of the first film and the second film could not be obtained. Therefore, in the said evaluation, the smoothness of the surface and the designability of the depth could not be evaluated.

The decorative molded products of Examples 1 and 2 had a design with irregularities in the depth, and were excellent in surface smoothness. Moreover, compared with Example 2 which used the urethane type adhesive layer for the 2nd adhesive layer, the direction of Example 1 which used the acrylic adhesive layer for the 2nd adhesive layer follows the cubic curve. It was excellent in nature. The second lamination step of Examples 1 and 2 is performed at the same heating temperature, and the behavior of the acrylic pressure-sensitive adhesive layer and the urethane pressure-sensitive adhesive layer with respect to the heating temperature is different. It is thought that there was a difference in the followability to the next curved surface.

On the other hand, as shown in Table 1 above, since Comparative Examples 1 and 2 had a total film thickness of the second film and the second pressure-sensitive adhesive layer of less than 500 μm, surface smoothness, depth designability, and tertiary Good results were not obtained in any of the followability to the curved surface.

In Comparative Example 3 in which the decorative molded product was manufactured by one TOM molding, the decorative molded product was wrinkled. The reason can be considered as follows. That is, in Comparative Example 3, when laminating the first film and the second film under atmospheric pressure, air enters between the convex portion of the first film and the second pressure-sensitive adhesive layer, and is exposed to vacuum. It was thought that wrinkles were formed after molding because the second pressure-sensitive adhesive layer was peeled off from the first film.

On the other hand, in Examples 1 to 3, in which the first film was laminated in the first lamination step and the second film was laminated in the second lamination step, the degree of vacuum in the TOM molding machine was about 0.1 kPa. It is thought that it was possible to suppress the air from entering between the convex portion and the second pressure-sensitive adhesive layer.

1: decorative molded product 10: molded product 20: first film 30: first pressure-sensitive adhesive layer 40: second pressure-sensitive adhesive layer 50: second film 100: vacuum / pressure forming apparatus 110: upper molding chamber 120: lower molding chamber 130: Table 140: Drive device 150: Vacuum tank 160: Pipe 170: Heater 180: Pressure air tank A: Height of convex part B: Film thickness of first film C: Film thickness of second adhesive layer and second film Sum of

Claims (7)

A first laminating step of laminating a first film having a plurality of convex portions on a molded product by vacuum / pressure forming, vacuum forming or pressure forming;
A second lamination step of laminating the pressure-sensitive adhesive layer and the second film on the first film so that the pressure-sensitive adhesive layer is on the first film side by vacuum / pressure forming, vacuum forming or pressure forming. ,
The total thickness of the pressure-sensitive adhesive layer and the second film is 500 μm or more. 2. The method for manufacturing a decorative molded product according to claim 1, wherein a height of the plurality of convex portions of the first film is 10 μm to 55 μm. The said adhesive layer is an acrylic adhesive layer or a urethane adhesive layer, The manufacturing method of the decorative molded product of Claim 1 or 2 characterized by the above-mentioned. The method for producing a decorative molded product according to any one of claims 1 to 3, wherein at least one of the first film and the second film contains polyvinyl chloride. The said 2nd film is inkjet-printed, The manufacturing method of the decorative molded product in any one of Claims 1-4 characterized by the above-mentioned. The method for producing a decorative molded product according to any one of claims 1 to 5, wherein the first film is a colored film that is calendered. The method for manufacturing a decorative molded product according to any one of claims 1 to 6, wherein the molded product is an exterior member of a motorcycle.

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