JP2002192533A - Mold for molding decorative sheet, decorative sheet, method for manufacturing molded decorative sheet, and method for manufacturing resin molded article with decorative sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mold for molding a decorative sheet on which the decorative sheet is not stuck on the surface of the mold by heat and mold clamping force and the decorative sheet. SOLUTION: The mold for molding the decorative sheet for molding the decorative sheet in which at least a decorative layer 15 is formed on a base sheet 14 under a condition where the decorative sheet is held on the mold face by pressing it by means of a clamping material 9 is provided and the mold for molding the decorative sheet in which an anti-sticking layer 1 is formed on a clamping face or the mold face corresponding to this with which the decorative sheet is brought into contact is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention heats a decorative sheet to transform it from a planar shape to a three-dimensional shape, and then cools it to room temperature to form a decorative sheet so that the deformed state is maintained. For forming a decorative sheet, a mold for forming a decorative sheet, a decorative sheet, which can prevent the decorative sheet from being hardly peeled off from the mold surface after the forming process. The present invention relates to a method for manufacturing a sheet and a method for manufacturing a molded article with a decorative sheet.

[0002]

2. Description of the Related Art Conventionally, there has been a decorative sheet in which a decorative layer having various patterns is formed on a base sheet. Since the decorative sheet is usually used for decorating a three-dimensional object, the decorative sheet is used after being deformed from a planar shape to a desired three-dimensional shape. There are the following two examples as a specific method for deforming the decorative sheet into a three-dimensional shape. (1) The decorative sheet is pressed against the mold surface around the female concave portion with a clamp material, and the softened decorative sheet is heated and sucked into the female concave portion by vacuum suction. A method of forming a decorative sheet by cooling it to room temperature. (2) The decorative sheet that has been softened by heating is sandwiched between the male and female molds of the injection molding die, and the mold is clamped and pressed into the female mold concave portion by the male convex portion, or The decorative sheet at room temperature is sandwiched between the male and female molds of the injection mold, and the hot pressure of the injected molten resin makes the decorative sheet softened and pushed into the female mold recesses to decorate. A method of forming a sheet by cooling it to room temperature.

[0003]

However, in the step of heating the decorative sheet, the heat causes heat to adhere to the base sheet side or the decorative layer side of the decorative sheet, and the portion where the adhesive property occurs is caused by gold. It easily adheres when it comes into contact with the mold surface or the clamp surface.
When an external force is applied by the mold clamping, the adhesion becomes stronger. For this reason, when the decorative sheet is separated from the mold surface or the corresponding clamp surface, a part of the base sheet or the decorative layer constituting the decorative sheet undergoes cohesive failure or delamination, and the decorative sheet is damaged. Problems occur, such as the occurrence of cohesion and destruction of cohesive fracture fragments in the female mold.
reference). The term “adhesiveness occurs” means that the plasticizer contained in the material of the decorative sheet elutes and sticks to the surface due to heat, or the decorative sheet becomes soft and soft due to heat. It means that it easily adheres to the mold surface. In addition, the magnitude of adhesion to the mold surface is different between the base sheet side and the decorative layer side. The reason is that the content of the plasticizer of the resin used, the melting point (Tm), and the softening temperature of the resin used are different between the base sheet and the decorative layer.

Accordingly, the present invention provides a decorative sheet molding die and a decorative sheet, the method for producing a molded decorative sheet, and the method for producing a molded article with a decorative sheet, in which the above-mentioned problems are minimized. The purpose is to:

[0005]

Means for Solving the Problems The present invention has been made as follows in order to achieve the above object. As described in claim 1, a decorative sheet forming mold for forming a decorative sheet having at least a decorative layer formed on a base sheet while pressing and holding the decorative sheet against a mold surface with a clamp material. And a mold for molding a decorative sheet having an anti-adhesion layer formed on a clamp surface in contact with the decorative sheet or a mold surface corresponding thereto. As described in claim 2, the decorative sheet molding die may be a vacuum molding die for a resin molded product. As described in claim 3, a decorative sheet molding die for forming a decorative sheet sandwiched between a male mold and a female mold, wherein the decorative sheet is sandwiched. A decorative sheet molding die having an anti-adhesion layer formed on at least one of a male die and a female die in contact with the decorative sheet. As described in claim 4, the mold for molding a decorative sheet may be an injection mold for a resin molded product. As described in claim 5, the main component of the adhesion preventing layer of the vacuum forming gold for resin molded products may be a fluororesin. As described in claim 6, the main component of the adhesion preventing layer of the injection molding die for a resin molded product may be a fluorine-based resin. As described in claim 7, the coefficient of dynamic friction of the decorative sheet against the surface of the adhesion preventing layer formed on the vacuum molding die for a resin molded product according to claim 2 (load 0.98 N / cm ² , speed 5 cm / s, temperature 25 ° C., relative humidity 60%) of 0.05 to 3. As described in claim 8, the coefficient of dynamic friction (load) of the decorative sheet with respect to the surface of the anti-adhesion layer formed on the mold surface of the injection molding die for a resin molded product according to any one of claims 4 and 6 0.95 N / cm ² , velocity 5 cm / s, temperature 25 ° C., relative humidity 60%) was 0.05 to 1.5. As described in claim 9, the decorative sheet according to claim 7 is pressed against the mold surface with a clamp material using the decorative sheet molding die according to any one of claims 2 and 5. This is a method for manufacturing a decorative sheet in which a flat decorative sheet is formed into a three-dimensional shape. As described in claim 10, the decorative sheet according to claim 8 is provided between the male mold and the female mold by using the decorative sheet molding die according to any of claims 3, 4, and 6. A method for manufacturing a decorative sheet in which a flat decorative sheet is formed into a three-dimensional shape while the sheet is sandwiched therebetween. As described in claim 11, claims 4 and 6
By using an injection mold for resin molded products according to any of the above, sandwiching the decorative sheet between the male mold and the female mold, injecting the molten resin into the cavity, and solidifying, the planar shape A method of manufacturing a molded article with a decorative sheet, in which the decorative sheet is formed into a three-dimensional shape and the decorative sheet and the resin molded article are integrated.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION (Decoration Sheet Mold) In a decorative sheet molding die of the present invention, a decoration sheet having at least a decoration layer formed on a base sheet is clamped to a mold surface. A decorative sheet forming mold for forming while holding pressed against a material, the mold surface corresponding to the clamp surface or the corresponding mold surface that comes into contact with the decorative sheet when the decorative sheet is clamped The configuration was such that an adhesion preventing layer was formed. Further, in the decorative sheet molding die of the present invention, a decorative sheet molding die for forming a decorative sheet in a state where the decorative sheet is sandwiched between a male mold and a female mold, And an at least one of a male mold and / or a female mold that comes into contact with the decorative sheet when sandwiched between them.

The decorative sheet molding die for forming the anti-adhesion layer 1 comprises a female mold 3 having a rectangular parallelepiped concave portion 2 and a male mold 5 having a convex portion 4 as shown in FIGS. There is a press molding die for molding the decorative sheet 6 by pressing. Alternatively, there is a vacuum molding die for a resin molded product having a female die 8 having a cubic concave portion 7 as shown in FIGS. A two-shaped clamp member 9 is attached to the mold surface. Alternatively, the female mold 1 having the concave portion 10 as shown in FIG.
There is an injection mold for a resin molded product comprising a mold 1 and a male mold 12. A resin injection port 13 is formed in the female mold 11.

Examples of the material of the adhesion preventing layer 1 include resins such as a fluorine resin, an olefin resin, a silicon resin and a urethane resin, and metals such as chromium, nickel and aluminum. Among them, the base sheet 1 of the decorative sheet 6
Even if the material of the decorative layer 4 or the decorative layer 15 is changed, the kinetic friction coefficient is hard to change, and a fluororesin that can minimize the value of the kinetic friction coefficient as far as the adhesion preventing effect is exhibited is most preferable. The method for forming the adhesion preventing layer 1 includes a coating method and a plating method. The film thickness is 0.1 to 2000 × 10 ^−3.
The range of mm is preferred. Be thinner than 0.1 × 10 -3 ^mm thickness is technically difficult and pinholes tend to occur, 2000 × 10 - When thicker than ^{3 mm,} die life is likely to be extremely short Because.

The thickness of the adhesion preventing layer 1 may be uniform over the entire surface, or may be partially different. When the decorative sheet forming die is a resin forming vacuum forming die, the coefficient of kinetic friction between the decorative sheet 6 and the decorative sheet 6 can be set relatively large as described later. The film thickness can be suppressed to a relatively small range of 0.1 to 100 × 10 ⁻³ mm. This is because the smaller the thickness of the adhesion preventing layer 1, the larger the dynamic friction coefficient. When the decorative sheet molding die is an injection molding die for a resin molded product, the coefficient of kinetic friction between the decorative sheet 6 and the decorative sheet 6 needs to be set relatively small as described later. It is necessary to make the film thickness relatively large in the range of 1 to 500 × 10 ⁻³ mm. This is because the dynamic friction coefficient decreases as the thickness of the adhesion preventing layer 1 increases. When the decorative sheet molding die is a press molding die for a resin molded product, the adhesion preventing layer 1
Can be in the range of 0.5 to 200 × 10 ⁻³ mm.

The place where the adhesion preventing layer 1 is formed may be a clamp surface. The clamp surface refers to a portion of the surface of the clamp material that comes into contact with the mold surface via the decorative sheet. Further, the place where the adhesion preventing layer 1 is formed is the decorative sheet 6
May be the entire surface of the mold surface with which the decorative sheet 6 contacts when molding is performed, or may be a part of the surface of the mold surface with which the decorative sheet 6 contacts. If it is formed in a part, the male and female molds on the mold surface are in contact with each other when the mold is closed and the pressure concentrates, and when heated, they are affected by heat. A place where the temperature is most likely to rise is good. The peeling of the base sheet and the decorative layer of the decorative sheet 6 can be prevented by forming the adhesion preventing layer 1 because the surface friction is reduced and the decorative sheet 6 is less likely to bite into the irregularities on the mold surface. It is thought to be.

(Regarding the decorative sheet) With respect to the decorative sheet, the relationship between the decorative sheet and the anti-adhesion layer 1 formed on the molding die is correlated by the dynamic friction coefficient between the two, and the dynamic friction coefficient which exhibits the anti-adhesion effect. Was selected. In addition,
In the present invention, the "dynamic friction coefficient" is 1 cm square and 1 mm thick.
A decorative sheet is attached to one side of the plastic plate through a double-sided tape, and placed on the adhesion preventing layer 1. Paste the conductor on the other side of the plastic plate and weigh 0.9 on it.
A plastic plate on which an 8N weight is placed and a decorative sheet is attached via a conductive wire is placed on the adhesion preventing layer 1 by 5 cm.
/ S and the load at that time is measured. In the load measurement, the above-described lead wire is connected to a tensile tester through a pulley, the load data of the tensile tester is recorded on a graph, and the average value of the load values when the test piece is moved by 5 cm is taken. The value obtained by dividing the average load value (N) by the weight of 0.98 N is defined as the coefficient of kinetic friction (the weight of a plastic plate, a conducting wire, and a double-sided tape is 0.005 N).
Less than. ). In the above description, the size of the plastic plate is set to be 1 cm square so that the pattern of the adhesion preventing layer 1 can be evaluated even with a small area.
The weight is set to 0.98 N in order to make the weight as heavy as possible within a range that can be placed on the small-area test piece in order to remove an error of the apparatus. The measurement error includes a weight error of a plastic plate or the like.
This definition applies to the relationship between the decorative layer of the decorative sheet 6 and the adhesion preventing layer 1 and the relationship between the base sheet of the decorative sheet and the adhesion preventing layer 1. In the present invention,
It is believed that the degree of the kinetic friction coefficient depends on both the physical roughness of the mold surface and the chemical adhesion.

The value of the coefficient of dynamic friction required for the decorative sheet 6 varies depending on the type of a molding die in which the decorative sheet 6 is used. This is because there is a great difference in the pressing force of the decorative sheet 6 against the surface of the mold depending on the type of the mold. That is, when the decorative sheet 6 is used for a vacuum molding die for a resin molded product, the decorative sheet 6 is several N to several hundred N (several Kg weight to several tens Kg weight) depending on the clamp material.
Since the decorative sheet 6 is originally hardly adhered to the mold surface because it is pressed against the mold surface by the force of?, The coefficient of dynamic friction may be relatively large. When the decorative sheet 6 is used for an injection molding die for resin molded products or a press molding die, the decorative sheet 6 is sandwiched between the dies with a force of several hundred tons due to the clamping force between the male die and the female die. Therefore, the decorative sheet 6 easily adheres to the surface of the mold, so that the coefficient of dynamic friction needs to be relatively small.

Table 1 shows the coefficient of dynamic friction between the base sheet 14 of the decorative sheet 6 and the anti-adhesion layer 1 when a plurality of types of decorative sheets 6 are used in a vacuum forming die for a resin molded product. It is a table | surface which measured and showed the range in which the adhesion prevention effect is exhibited (refer Table 1). Table 2 shows the measurement of the coefficient of kinetic friction between the base sheet of the decorative sheet 6 and the anti-adhesion layer 1 when a plurality of types of the decorative sheets 6 are used for the injection mold, and the anti-adhesion effect is shown. It is a table | surface which showed the range which is exhibited (refer Table 2). The decorative sheet 6 according to the present invention can be applied to various uses. In addition, as the product form, there are a three-dimensional forming sheet, a transfer foil, a decorative sheet and the like. The three-dimensionally formed sheet is one that sells the three-dimensionally shaped decorative sheet 6 as a finished product, or fits the three-dimensionally shaped decorative sheet 6 into an injection molding die. After that, it is used by being integrally bonded to an injection molded product. The transfer foil is used by transferring a transfer layer to an object to be transferred and peeling a base sheet. The decorative sheet means that the flat decorative sheet 6 is fed between the male and female molds of the injection molding die for resin molding and along the concave portion of the female mold. Inject
By solidifying, the decorative sheet is formed into a three-dimensional shape, and is used by being integrally bonded to a molded product.

[0014]

[Table 1]

According to Table 1, when the decorative sheet is used for a vacuum forming die for a resin molded product, the coefficient of dynamic friction between the base sheet of the decorative sheet 6 and the surface of the adhesion preventing layer 1 (load 0. 1). 9
8 N / cm ² , speed 5 cm / s, moving distance 5 cm, average value of three points, measured at a temperature of 25 ° C. and a relative humidity of 60%).
If it is 0 or less, the presence of the anti-adhesion effect was confirmed in all of the tested decorative sheets 6 (see Table 1). In particular, the coefficient of kinetic friction (load 0.98 N / cm ² , speed 5 cm / s, moving distance 5 cm, average value of three points, temperature 25 ° C., relative humidity 6
(Measured at 0%) is 1.8 or less, there was no adhesion to the molding die in all areas of all the decorative sheets 6 tested.

[0016]

[Table 2]

According to Table 2, when the decorative sheet is used for an injection mold for a resin molded product, the coefficient of dynamic friction between the base sheet of the decorative sheet 6 and one surface of the adhesion preventing layer (load 0.98)
N / cm ² , speed 5 cm / s, moving distance 5 cm, average value of 3 points, measured at a temperature of 25 ° C. and a relative humidity of 60%) is 1.5.
If it is below, the existence of the anti-adhesion effect was confirmed in all of the tested decorative sheets 6 (see Table 2). In particular, the coefficient of kinetic friction (load 0.98 N / cm ² , speed 5 cm / s, moving distance 5 cm, average value of three points, temperature 25 ° C., relative humidity 60
% (Measured in%) was 0.5 or less, there was no adhesion of the decorative sheet 6 to the molding die in all areas of the tested decorative sheets 6.

In the above measurement, as the material of the base sheet, a vinyl chloride resin, an acrylic resin, a polypropylene resin, a polystyrene resin, an ABS resin, a polyester resin, and a copolymer of an acrylic resin and a vinyl chloride resin were used. As the material of the adhesion preventing layer 1, a thermosetting urethane resin, a thermosetting acrylic resin, a silicon resin, or a fluororesin was used. As a result of the test, it was found that the dynamic friction coefficient of the decorative sheet fluctuated depending on the material of the base sheet of the decorative sheet 6 (see Table 3). Examination of the material of the anti-adhesion layer whose dynamic friction coefficient value is as small as possible and whose fluctuation is small depending on the material of the base sheet 1 has revealed that the anti-adhesion layer 1 made of "fluororesin" is most preferable. (See Table 3).

[0019]

[Table 3]

The structure of the decorative sheet 6 includes a transfer foil (for peeling off the base sheet) and an insert sheet (for not peeling off the base sheet) as long as at least a decorative layer is formed on the base sheet. Any of them may be used. A mere decorative sheet refers to a sheet in which at least a decorative layer is formed on a base sheet and has no adhesive layer.

As the material of the base sheet, a base sheet of an ordinary decorative sheet such as a resin sheet of polypropylene resin, polyethylene resin, polyamide resin, polyester resin, acrylic resin, polyvinyl chloride resin, etc. What is used can be used.

The decorative layer is usually formed as a printed layer on the base sheet. As the material of the printing layer, a resin such as a polyvinyl resin, a polyamide resin, a polyester resin, an acrylic resin, a polyurethane resin, a polyvinyl acetal resin, a polyester urethane resin, a cellulose ester resin, and an alkyd resin is used as a binder. It is preferable to use a coloring ink containing a pigment or dye of an appropriate color as a coloring agent. As a method for forming the printing layer, a normal printing method such as an offset printing method, a gravure printing method, or a screen printing method may be used. The printing layer may be formed entirely or partially depending on the design to be expressed.

The decorative layer may be made of a metal thin film layer or a combination of a printed layer and a metal thin film layer. The metal thin film layer is for expressing metallic luster as a decorative layer, and may be formed by a vacuum evaporation method, a sputtering method, an ion plating method, a plating method, or the like. Depending on the color of the metallic luster to be expressed, metals such as aluminum, nickel, gold, platinum, chromium, iron, copper, tin, indium, silver, titanium, lead, zinc, and alloys or compounds thereof may be used. The metal thin film layer may be partially formed. Further, an anchor layer may be formed in order to improve the adhesion to other layers when forming the metal thin film layer.

Further, an adhesive layer may be formed as required. The adhesive layer is for bonding the decorative sheet 6 on a molding resin or the like. As the adhesive layer, a heat-sensitive or pressure-sensitive resin suitable for a material such as a molding resin is appropriately used. For example, when the material of the molding resin is an acrylic resin, it is preferable to use an acrylic resin. When the material is a polyphenylene oxide resin, polystyrene resin, polycarbonate resin, styrene copolymer resin, or polystyrene blend resin, an acrylic resin, polystyrene resin, or polyamide resin having an affinity for these resins. It is good to use such as. Further, when the material is a polypropylene resin, a chlorinated polyolefin resin, a chlorinated ethylene-vinyl acetate copolymer resin, a cyclized rubber, a coumarone indene resin, or the like may be used. Examples of a 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, and a printing method such as a gravure printing method and a screen printing method. Also, an adhesive sheet made of the above-mentioned materials can be bonded to the adhesive layer by a laminating method or the like.

[0025] If necessary, an overcoat layer may be formed. The overcoat layer is a layer for protecting the decorative layer. As the overcoat layer, a thermosetting resin, an ultraviolet curable resin, an electron beam curable resin, or the like is preferably used.

The configuration of the decorative sheet 6 is not limited to the above-described embodiment. For example, when a material having excellent adhesiveness with a molding resin is used as the material of the decorative layer, the adhesive layer is omitted. can do. Further, when hiding is necessary for the decorative layer, a hiding layer may be formed. The concealing layer may be an ink layer containing a pigment such as titanium oxide, or may be 0.01 × 10 ^{−
It is} preferable to use a metal deposition layer of ³ mm or more.

(Method of Manufacturing Molded Decorative Sheet) The method of manufacturing the formed decorative sheet of the present invention is performed, for example, by using the above-described vacuum molding die for resin molded article and the decorative sheet 6 to form a metal sheet. The flat decorative sheet 6 is formed into a three-dimensional shape by pressing against a mold surface with a clamp material 9. In addition, as long as it is a molding method in which the decorative sheet 6 is pressed against the mold surface with the clamp material 9 and processed, for example, air pressure molding (including ultra-high pressure molding), blow molding, hydroforming and the like can be applied.

In the method for manufacturing a molded decorative sheet according to the present invention, for example, the decorative sheet is sandwiched between a male mold and a female mold using the above-described injection mold for a resin molded product. In this state, the flat decorative sheet is formed into a three-dimensional shape. In addition, as long as the decorative sheet is sandwiched between the male mold and the female mold in the metal mold and the molding is performed, for example, compression molding, press molding, or the like can be applied. It is also possible to use a combination of the vacuum molding die for resin molding and the injection molding die for resin molding.

[0029]

(Example 1) A female die having a rectangular parallelepiped concave portion as shown in FIG. 1 and a male die having a rectangular parallelepiped convex portion, and a female female of a press molding die for forming a decorative sheet by pressing. A coating liquid composed of 70% of a fluorine-based resin and 30% of a thermosetting acrylic resin is sprayed on the entire surface inside the concave portion of the mold by spraying, the film thickness is set to 200 × 10 ⁻³ mm, and hot air is blown with a dryer to forcibly dry. Thereby, an adhesion preventing layer was formed.

Next, a film made of a polypropylene resin having a thickness of 2 mm was used as a base sheet, and a wood-grain decorative layer was formed thereon by gravure printing using a urethane resin-based ink. Further, a laminate of a transparent urethane resin-based ink layer and an isocyanate resin-based ink layer was formed thereon as an overcoat layer, and a decorative sheet for building materials was prepared.

When the decorative sheet for building material was placed on the press molding die and pressed, it could be molded without any problem (FIG. 2). At this time, the heating temperature of the decorative sheet was 50 ° C., and the mold clamping force between the male mold and the female mold was 500 N.
Met. In addition, in the press molding die before forming the adhesion preventing layer, in the concave corner portion and the concave portion outer peripheral portion of the female mold,
A part of the cohesive fracture fragments of the overcoat layer adhered and stained the female mold (FIG. 3).

The coefficient of kinetic friction between the surface of the press-forming mold or the surface of the anti-adhesion layer before the formation of the anti-adhesion layer and the overcoat layer of the decorative sheet for building material was measured. 0.4, the latter being 0.4.

(Example 2) 30% of a fluorine-based resin and 70% of a silicon resin
The resulting coating solution was applied by a brush so as to have a thickness of about 1 mm, and was dried by applying hot air with a drier to form an adhesion preventing layer.

Next, a decorative ink layer is formed by printing a vinyl-based ink on a base sheet made of a colorless and transparent acrylic resin film, and then a colored soft vinyl chloride resin film is laminated thereon and decorated. Created a sheet.

This decorative sheet is pressed against a clamp surface of the vacuum forming die for resin molding with a clamp material and fixed.
When vacuum forming was performed, the forming could be performed without any problem. In addition, when the above-mentioned vacuum molding die for resin molding was used before the formation of the adhesion preventing layer, after the molding, the eluate considered to be the plasticizer of the vinyl chloride resin film layer adhered to the clamp surface, and the clamp material was removed. Was contaminated.

The coefficient of kinetic friction between the surface of the mold for vacuum molding or the surface of the anti-adhesion layer before the formation of the anti-adhesion layer and the base sheet (vinyl chloride resin film layer) of the decorative sheet was measured. The former was 2.2 and the latter was 0.6.

Example 3 The outer periphery of the concave portion (the entire parting surface) of an injection mold for a resin molded product having a concave portion as shown in FIG. 6 was subjected to fluorine processing (corresponding to an adhesion preventing layer).

Next, a pattern layer is formed on a base sheet made of a polyester film using an acrylic ink, and an adhesive layer is further formed thereon using a vinyl ink to obtain a transfer foil having a wood grain pattern. Decorative sheet was created.

The decorative sheet was placed between the male and female molds of the above-mentioned injection mold for resin molded products, clamped, and injection-molded. Was.
In addition, in the injection molding die for resin molded products before the fluorine processing, after molding, the pattern layer of the transfer foil on the male mold surface, a part of the adhesive layer was adhered as cohesive failure fragments and contaminated the male mold. .

The dynamic friction coefficient between the surface of the injection-molding die for a resin molded product before the fluorine processing and the fluorine-processed surface and the adhesive layer of the transfer foil was measured.
6. The latter was 0.05.

[0041]

According to the present invention, since the anti-adhesion layer is formed on the surface of the mold for molding the decorative sheet, which is in contact with the decorative sheet, the decorative sheet is heated by the heat in the step of heating the decorative sheet. The decorative sheet does not adhere to the mold surface even if an adhesive force is generated on the surface of the base sheet or the surface of the decorative layer, and even if an external force is applied by a clamp material or mold clamping. Therefore,
When the decorative sheet is separated from the mold surface, a part of the base sheet or the decorative layer constituting the decorative sheet undergoes cohesive failure or delamination, causing the decorative sheet to be damaged or a cohesive failure fragment to form the molding metal. It does not remain in the mold.

[Brief description of the drawings]

FIG. 1 is a perspective view of a molding die according to the present invention.

FIG. 2 is a cross-sectional view showing one process of a method for manufacturing a decorative sheet formed using the molding die and the decorative sheet of the present invention.

FIG. 3 is a cross-sectional view showing one step of a conventional method for manufacturing a molded decorative sheet.

FIG. 4 is a perspective view of a molding die according to the present invention.

FIG. 5 is a cross-sectional view showing one step of a method for manufacturing a molded decorative sheet using the molding die and the decorative sheet of the present invention.

FIG. 6 is a cross-sectional view showing one step of a method for manufacturing a molded decorative sheet using the molding die and the decorative sheet of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 anti-adhesion layer 2 concave portion 3 female type 4 convex portion 5 male type 6 decorative sheet 7 concave portion 8 female type 9 clamp material 10 concave portion 11 female type 12 male type 13 resin injection port 14 base sheet 15 decorative layer

Claims (11)

[Claims] A decorative sheet molding die for forming a decorative sheet having at least a decorative layer formed on a base sheet while pressing and holding the decorative sheet against a die surface with a clamp material, A mold for forming a decorative sheet, wherein an anti-adhesion layer is formed on a clamp surface in contact with the decorative sheet or a mold surface corresponding to the clamp surface. 2. The decorative sheet molding die according to claim 1, wherein the decorative sheet molding die is a vacuum molding die for a resin molded product. 3. A decorative sheet molding die for forming a decorative sheet in a state where the decorative sheet is sandwiched between a male mold and a female mold, wherein the decorative sheet is formed when the decorative sheet is sandwiched. A decorative sheet molding die, wherein an adhesion preventing layer is formed on at least one of a male die and a female die in contact with each other. 4. The decorative sheet molding die according to claim 3, wherein the decorative sheet molding die is an injection molding die for a resin molded product. 5. The decorative sheet molding die according to claim 1, wherein a main component of the adhesion preventing layer is a fluororesin. 6. The decorative sheet molding die according to claim 3, wherein a main component of the adhesion preventing layer is a fluororesin. 7. The coefficient of kinetic friction of the decorative sheet against the surface of the anti-adhesion layer formed on the resin-molded article vacuum forming die according to claim 2 (load 0.98 N / cm ² ,
(Measured at a speed of 5 cm / s, a temperature of 25 ° C, and a relative humidity of 60%)
Is a decorative sheet of 0.05 to 3. 8. The coefficient of kinetic friction of the decorative sheet with respect to the surface of the anti-adhesion layer formed on the mold surface of the injection-molding mold for resin molded products according to claim 4 (load 0.98 N /
cm ² , speed 5 cm / s, temperature 25 ° C, relative humidity 60%
) Is 0.05 to 1.5. 9. The decorative sheet according to claim 7, wherein the decorative sheet according to claim 7 is pressed against a mold surface with a clamp material and held using the decorative sheet molding die according to claim 2. A method for manufacturing a shaped decorative sheet, comprising forming a flat decorative sheet into a three-dimensional shape. 10. The decorative sheet according to claim 8 is sandwiched between a male mold and a female mold by using the decorative sheet molding die according to any one of claims 3, 4, and 6. A method for manufacturing a shaped decorative sheet, comprising forming a flat decorative sheet into a three-dimensional shape in a state. 11. A decorative sheet is sandwiched between a male mold and a female mold using the injection molding die for resin molded product according to claim 4, and the molten resin is injected into the cavity. A method of manufacturing a molded article with a decorative sheet, comprising: solidifying the molded sheet into a three-dimensional shape while integrating the decorative sheet and the resin molded article.