JP2018009159A - Decorative film and method for producing decorative molded body using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a polypropylene-based decorative film used for three-dimensional decorative thermoforming, which can achieve both sufficient adhesive strength and product appearance and facilitate recycling, and a method for producing a decorative molded product using the polypropylene-based decorative film. SOLUTION: This is a decorative film for being attached onto a resin molded body by thermoforming, and the decorative film contains a layer (I) made of a polypropylene-based resin (A), and the polypropylene-based resin (1). A) is characterized in that the MFR (230 ° C., 2.16 kg load) is 2 g / 10 minutes or less. [Selection diagram] Fig. 6

Description

  The present invention relates to a decorative film for sticking by thermoforming on a resin molded body and a method for producing a decorative molded body using the decorative film. Specifically, the decorative film for sticking by thermoforming on the resin molded body, which can suppress wrinkles and film breakage of the film during thermoforming, and can exhibit sufficient adhesive strength to the resin molded body, and The present invention relates to a method for producing a decorative molded body using the decorative film.

  In recent years, there has been an increasing demand for decoration techniques that can replace painting due to VOC (volatile organic compound) reduction requirements, and various proposals for decoration techniques have been made.

  In particular, there is proposed a technique for forming a decorative molded product in which a decorative sheet and a molded body are integrated by applying a decorative sheet instead of a coating film to the molded body by vacuum pressure forming or vacuum forming (see, for example, Patent Document 1). In recent years, it has become particularly noticeable.

  Decorative molding by vacuum pressure forming and vacuum forming has a greater degree of freedom of shape than other decorative moldings typified by insert molding, and the end face of the decorative sheet is rolled up to the back side of the decoration target, so that the seam is formed. Since it does not occur, it has excellent appearance, and since it can be thermoformed at a relatively low temperature and low pressure, it is excellent in the reproducibility of wrinkles and the like on the surface of the decorative molded body by imparting wrinkles etc. It has the following advantages.

  In such vacuum pressure forming and decorative forming by vacuum forming, when the decorative sheet and the molded body are stuck, the decorative sheet may be broken or wrinkled, or the bonding strength between the decorative sheet and the molded body is sufficient. There was a problem that could not be obtained. In addition, the use of adhesives, tackifiers, etc. has been proposed as a layer for improving the adhesive strength, but it is expensive, the layer structure becomes extremely complicated, and the solvent resistance and heat resistance are insufficient. , Etc. have problems.

  For such a problem, by applying a decorative sheet including an adhesive layer containing a polypropylene resin to a base body (molded body) made of a polypropylene resin, the decorative sheet and the molded body can be heat-sealed. It has been proposed (see, for example, Patent Documents 2 and 3). The inventions disclosed in Patent Documents 2 and 3 use a polypropylene-based resin as the adhesive layer of the decorative sheet, but substantially further, a surface layer on the adhesive layer, an acrylic resin on the bonding layer and the bulk layer. It is necessary to provide a layer of polyurethane resin, polycarbonate or the like. In this way, by combining different raw materials, thermoformability such as draw-down property is expressed, and a decorative sheet made of polypropylene resin that does not contain these different raw materials can ensure thermoformability. Furthermore, holes, wrinkles, and air were easily generated on the surface of the molded product on which this was adhered, and furthermore, a decorative molded body having an excellent appearance could not be obtained due to film breakage. In particular, when a polyurethane resin is included as a heterogeneous raw material, the polyurethane resin, which is a thermosetting resin, does not melt when heated, and thus easily maintains the form of the film and greatly improves thermoformability, but has a problem of extremely low recyclability. It was.

  That is, the decorative sheets described in Patent Documents 2 and 3 contain different raw materials to ensure thermoformability such as adhesiveness and appearance, have a complicated layer structure, and require many steps for manufacturing. There is a problem that it is difficult to recycle a decorative sheet in which different raw materials are combined.

JP 2002-67137 A JP 2013-14027 A JP 2014-124940 A

  In the prior art, a decorative film made of a propylene-based resin that is easy to recycle and can achieve both adhesiveness and appearance has not been achieved yet. In view of the above problems, an object of the present invention is to provide a decorative film used in three-dimensional decorative thermoforming that can achieve both sufficient adhesive strength and product appearance and is easy to recycle, and a decorative molded body using the same. It is in providing the manufacturing method of.

  In three-dimensional decorative thermoforming, in order to stick a solid decorative film to a solid resin molded body, it is necessary that the surface of the molded body and the film are sufficiently softened or melted. It is important to add the amount of heat necessary to soften or melt the surface of the molded body and the film, or to use a molded body and film that are easily softened or melted. However, if the film is heated sufficiently, the viscosity of the film decreases. Investigating focusing on the fact that the film breaks or ramps up due to the push-up of the molded body in the three-dimensional decorative thermoforming process and the inflow of air when the vacuum chamber is returned to atmospheric pressure, leading to poor appearance. As a result, it has been found that a decorative film including a layer made of a specific polypropylene resin can solve the above-mentioned problems, and has completed the present invention.

That is, the decorative film of the present invention has any one of the following configurations (1) to (3).
(1) A decorative film for adhering to a resin molded body by thermoforming, the decorative film including a layer (I) made of a polypropylene resin (A), and the polypropylene resin (A ) Is a decorative film characterized in that MFR (230 ° C., 2.16 kg load) is 2 g / 10 min or less.
(2) The decorating film has a surface decorating layer (II) made of a surface decorating layer resin on the side of the layer (I) opposite to the sticking side to the resin molded body. The decorative film according to (1) above, characterized in that
(3) The surface decoration layer resin is made of a polypropylene resin (B), and the MFR (230 ° C., 2.16 kg load) of the polypropylene resin (B) exceeds 2 g / 10 minutes. The decorative film according to (1) or (2).

Moreover, the manufacturing method of the decorative molded body of this invention consists of the following structures (4) or (5).
(4) In the step of preparing the decorative film according to any one of (1) to (3), the step of preparing a resin molded body, and the chamber box capable of decompression, the resin molded body and the decorative film A step of reducing the pressure inside the chamber, a step of heating and softening the decorative film, a step of pressing the decorative film against the resin molded body, and a step of returning or pressurizing the inside of the chamber to atmospheric pressure. A method for producing a decorative molded body characterized by the above.
(5) The method for producing a decorative molded body according to (4), wherein the resin molded body is made of a propylene-based resin composition.

  As a result of diligent research, the present inventors have made the decorative film include the layer (I) made of the polypropylene resin (A) having a specific MFR. Excellent thermoformability at the time of original decorative thermoforming, and because it can sufficiently increase the heating time, it is necessary to achieve both high adhesion strength and product appearance to polypropylene resin moldings that were difficult to bond conventionally. It was possible.

  According to the method for producing a decorative molded body of the present invention, it is possible to obtain a beautiful decorative molded body having no holes or wrinkles on its surface and no air entrainment between the decorative film and the resin molded body. In addition, a decorative film can be neatly adhered to a resin molded body that has been difficult to bond. Furthermore, in the decorative molded body obtained in this way, the constituent material of the decorative film is a polypropylene-based resin (A), and since it does not include or does not include the thermosetting resin layer, at the time of recycling Small deterioration in appearance and performance, high recyclability.

BRIEF DESCRIPTION OF THE DRAWINGS It is a cross-sectional schematic diagram which illustrates embodiment of the decorative molded object which stuck the decorative film of this invention to the molded object, (a)-(c) is the example which varied the layer structure of the decorative film, respectively. It is. It is typical sectional drawing explaining the outline | summary of the apparatus used for the manufacturing method of the decorative molded body of this invention. It is typical sectional drawing explaining a mode that the resin molding and the decorating film were set in the apparatus of FIG. It is typical sectional drawing explaining a mode that the inside of the apparatus of FIG. 2 is heated and pressure-reduced. It is typical sectional drawing explaining a mode that a decorating film is pressed on the resin molding in the apparatus of FIG. It is typical sectional drawing explaining a mode that it returns to atmospheric pressure or pressurizes the inside of the apparatus of FIG. It is a typical sectional view explaining signs that the edge of an unnecessary decoration film was trimmed in the obtained decoration fabrication object.

  In this specification, the decorative film refers to a film for decorating a molded body. Decorative molding refers to molding in which a decorative film and a molded body are attached. Three-dimensional decorative thermoforming is a process of adhering a decorative film and a molded body, and has a step of applying a decorative film at the same time as thermoforming along the adhesive surface of the molded body, In order for this process to suppress air from being caught in the decorative film and the molded body, thermoforming is performed under reduced pressure (vacuum), the heated decorative film is adhered to the molded body, and the pressure is released (pressed). Pressure)), which is the process of making it adhere. Hereinafter, embodiments for carrying out the present invention will be described in detail.

  The decorative film in the present invention is a decorative film for sticking on a resin molded body by thermoforming, and includes a layer (I) made of a polypropylene resin (A), and the polypropylene resin (A). Is characterized in that MFR (230 ° C., 2.16 kg load) is 2 g / 10 min or less.

Polypropylene resin (A)
By including the layer (I) made of the polypropylene resin (A), the decorative film can suppress the appearance failure due to the film breaking or rampage during thermoforming. Thereby, since the thermoformability of a decoration film is improved, it is not necessary to include the thermosetting resin layer excellent in thermoformability. Furthermore, by improving the moldability of the polypropylene resin (A), a single layer of the polypropylene resin (A), or the lamination of the layer (I) made of the polypropylene resin (A) and the surface decoration layer is extremely simple. With such a configuration, it can be used as a decorative film. With such a configuration, the decorative film can be formed by (co) extrusion.

  The polypropylene resin (A) in the present invention is a propylene homopolymer (homopolypropylene), a propylene-α-olefin copolymer (random polypropylene), a propylene block copolymer (block polypropylene), or any other type of propylene-based resin. Polymers or combinations thereof can be selected. The propylene-based polymer preferably contains 50 mol% or more of propylene monomer.

  The polypropylene resin (A) has an MFR (230 ° C., 2.16 kg load) of 2 g / 10 min or less, preferably 1.5 g / 10 min or less, more preferably 1 g / 10 min or less. By setting the MFR of the polypropylene resin (A) to be equal to or less than the above value, a decorative molded body having a good appearance can be obtained.

  Although there is no restriction | limiting in particular about the minimum of MFR of a polypropylene resin (A), Preferably it is 0.1 g / 10min or more, More preferably, it is 0.3 g / 10min or more. By making MFR more than said value, the moldability at the time of manufacture of a decoration film improves, and it can suppress that the appearance defect called a shark skin and interface roughness generate | occur | produces on the film surface.

  In this specification, the MFR of the polypropylene resin and the polypropylene resin composition described later was measured in accordance with ISO 1133: 1997 Conditions M under the conditions of 230 ° C. and 2.16 kg load. The unit is g / 10 minutes.

  The polypropylene resin (A) in the present invention preferably has higher crystallinity from the viewpoints of heat resistance, scratch resistance and solvent resistance. The melting point (DSC melting peak temperature) of the polypropylene resin (A) is preferably 155 ° C. or higher, more preferably 158 to 170 ° C., further preferably 160 to 168 ° C. The polypropylene resin (A) is preferably a propylene homopolymer or a propylene-α-olefin copolymer having such a melting point. In addition, since the scratch resistance and solvent resistance are reduced when a low crystalline component is contained even if the melting point is high, the polypropylene resin (A) is an ethylene-α-olefin having an ethylene content of 50 to 70% by weight. It is preferable not to contain a copolymer.

  The polypropylene resin (A) may contain additives, fillers, colorants, other resin components, and the like. That is, it may be a resin composition (polypropylene resin composition) containing a propylene polymer and additives, fillers, colorants, other resin components, and the like. The total amount of additives, fillers, colorants, and other resin components is preferably 50% by weight or less based on the polypropylene resin composition.

  When the polypropylene resin (A) is a polypropylene resin composition, the polypropylene resin composition preferably has the characteristics of the polypropylene resin (A). That is, the MFR (230 ° C., 2.16 kg load) of the polypropylene resin composition is 2 g / 10 min or less.

  When the decorative molded body of the present invention is molded as a colored molded body, it is only necessary to use a colorant only for the decorative film, and therefore, the use of an expensive colorant is used compared to the case where the entire resin molded body is colored. Can be suppressed. Moreover, the physical property change accompanying mixing | blending a coloring agent can be suppressed.

  Additives can be used for polypropylene resins such as antioxidants, neutralizers, light stabilizers, UV absorbers, crystal nucleating agents, antiblocking agents, lubricants, antistatic agents, metal deactivators, etc. Various known additives can be blended.

  Examples of antioxidants include phenolic antioxidants, phosphite antioxidants, and thio antioxidants. Examples of the neutralizing agent include higher fatty acid salts such as calcium stearate and zinc stearate. Examples of the light stabilizer and the ultraviolet absorber include hindered amines, benzotriazoles, and benzophenones.

  Examples of the crystal nucleating agent include amide nucleating agents such as aromatic carboxylic acid metal salts, aromatic phosphoric acid metal salts, sorbitol derivatives, and metal salts of rosin. Among these crystal nucleating agents, pt-butyl aluminum benzoate, 2,2′-methylenebis (4,6-di-t-butylphenyl) sodium phosphate, 2,2′-methylenebisphosphate (4 , 6-Di-t-butylphenyl) aluminum, bis (2,4,8,10-tetra-tert-butyl-6-hydroxy-12H-dibenzo [d, g] [1,2,3] dioxaphospho Syn-6-oxide) aluminum hydroxide salt and organic compound complex, p-methyl-benzylidene sorbitol, p-ethyl-benzylidene sorbitol, sodium salt of rosin, and the like.

  Examples of the lubricant include higher fatty acid amides such as stearic acid amide. Examples of the antistatic agent include fatty acid partial esters such as glycerin fatty acid monoester. Examples of the metal deactivator include triazines, phosphones, epoxies, triazoles, hydrazides, oxamides and the like.

  As a filler, various well-known fillers which can be used for polypropylene resin, such as an inorganic filler and an organic filler, can be mix | blended. Examples of the inorganic filler include calcium carbonate, silica, hydrotalcite, zeolite, aluminum silicate, magnesium silicate, glass fiber, and carbon fiber. Examples of the organic filler include crosslinked rubber fine particles, thermosetting resin fine particles, and thermosetting resin hollow fine particles.

  Examples of other resin components include polyethylene resins, polyolefins such as ethylene elastomers, modified polyolefins, and other thermoplastic resins.

  Moreover, it is also possible to color in order to provide designability, and various colorants, such as an inorganic pigment, an organic pigment, and dye, can be used for coloring. Further, bright materials such as aluminum flakes, titanium oxide flakes, and (synthetic) mica can also be used.

  The polypropylene resin composition is a method of melt-kneading a propylene polymer and additives, fillers, other resin components, etc., and drying other resin components into a melt-kneaded propylene polymer, additives, fillers, etc. It can be produced by a blending method, a method of dry blending a master batch in which additives, fillers and the like are dispersed in a carrier resin at a high concentration in addition to a propylene polymer and other resin components.

Decorating film The decorating film in this invention contains the layer (I) which consists of polypropylene resin (A). That is, the decorative film may be a single layer film composed of the layer (I) or a multilayer film composed of the layer (I) and another layer. The decorative film of the present invention can take various configurations in addition to the layer (I). In addition, the decorative film of the present invention may have a surface with embossing, embossing, printing, sand plasting, scratching, or the like.

  The decorative film has a large degree of freedom in shape, and since the seam does not occur because the end surface of the decorative film is rolled up to the back side of the object to be decorated, it is excellent in appearance, and furthermore, the surface of the decorative film is given wrinkles or the like Can express various textures. For example, when a texture such as embossing is applied to the resin molded body, three-dimensional decorative thermoforming may be performed using a decorative film provided with embossing. For this reason, it is very difficult and expensive to perform molding with a molded body mold that gives embossing, that is, a molded body mold is required for each embossing pattern, and that complicated embossing is applied to a curved mold. Thus, it is possible to obtain a decorative molded body to which various patterns of embossing can be easily applied.

  The multilayer film can include a surface layer, a surface decoration layer, a printing layer, a light shielding layer, a colored layer, a base material layer, a seal layer, a barrier layer, a tie layer layer that can be provided between these layers, and the like. The layer (I) made of the polypropylene resin (A) may be any layer constituting the multilayer film.

  As a preferable aspect of the decorative film, when it is a single layer film, it is a film made of a polypropylene resin (A) having an MFR of 2 g / 10 min or less.

  As another preferable aspect of the decorative film, in the case of a multilayer film having a two-layer structure, a surface layer that is the surface of the decorative molded body and / or an inner layer that is attached to the molded body has an MFR of 2 g / 10 min or less. It is a layer made of a resin (A). More preferably, the inner layer to be bonded to the molded body is a layer made of a polypropylene resin (A) having an MFR of 2 g / 10 min or less.

  As another preferred embodiment of the decorative film, in the case of a multilayer film having a three-layer structure, the surface layer that is the surface of the decorated molded body, the inner layer to be adhered to the molded body and / or the intermediate between the surface layer and the inner layer The intermediate layer interposed between the layers is a layer made of a polypropylene resin (A) having an MFR of 2 g / 10 min or less. More preferably, the inner layer to be bonded to the molded body is a layer made of a polypropylene resin (A) having an MFR of 2 g / 10 min or less.

  Even in a multilayer film having a more complicated layer structure, at least one layer constituting the multilayer film is made of a polypropylene resin (A) having an MFR of 2 g / 10 min or less.

  Drawing 1 (a)-(c) is an explanatory view which illustrates typically the section of the embodiment of the decoration film stuck on the resin fabrication object. In FIG. 1 (a)-(c), in order to understand easily, arrangement | positioning of a layer (I) is specified and demonstrated, However, The layer structure of a decoration film is limited to these illustrations, and is not interpreted. Absent. In the present specification, reference numeral 1 in the drawing denotes a decorative film, reference numeral 2 denotes a layer (I), reference numeral 3 denotes a surface decoration layer (II), and reference numeral 5 denotes a resin molded body. FIG. 1A is an example in which the decorative film is made of a single layer film, and the layer (I) made of the polypropylene resin (A) is adhered to the resin molded body 5. FIGS. 1B and 1C are examples in which the decorative film is a multilayer film. The decorative film in FIG. 1 (b) is composed of a layer (I) and a surface decorative layer (II). The layer (I) is adhered to the surface of the resin molded body 5, and the surface applied on the layer (I). The decorative layer (II) is laminated. The decorative film in FIG. 1 (c) is composed of a layer (I), an intermediate layer, and a surface decorative layer (II). The layer (I) is adhered to the surface of the resin molded body 5, and the top of the layer (I) The intermediate layer and the surface decoration layer (II) are laminated in this order.

  In the multilayer film, the layer other than the layer (I) made of the polypropylene resin (A) having an MFR of 2 g / 10 min or less is preferably a layer made of a thermoplastic resin, more preferably a polypropylene other than the polypropylene resin (A). It is a layer made of a resin. Each layer is preferably a layer that does not contain a thermosetting resin. Recyclability is improved by using a thermoplastic resin. Furthermore, by using a polypropylene resin other than the polypropylene resin (A), the complication of the layer structure can be suppressed, and the recyclability is further improved.

  As still another preferred embodiment of the decorative film, the decorative film is provided on the side opposite to the sticking surface side of the layer (I) made of polypropylene resin (A) having an MFR of 2 g / 10 min or less and the resin molded body of the layer. And a multilayer film including a surface decoration layer (II) made of a surface decoration layer resin.

  The surface decorating layer resin is preferably made of a thermoplastic resin, more preferably a polypropylene resin (B). By using the polypropylene resin (B), it is possible to suppress complication of the layer structure and a decrease in recyclability. In addition, solvent resistance etc. can be made excellent by using a polypropylene resin (B) for the surface decoration layer of a decoration film. Moreover, by using a polypropylene resin (B) for the surface decoration layer, the surface transferability at the time of production of the decorative film and at the time of thermoforming is improved, and if a mirror roll is used at the time of thermoforming, it has a higher gloss. It can be set as a decorative film.

  In the present invention, the polypropylene resin (B) is a propylene homopolymer (homopolypropylene), a propylene-α-olefin copolymer (random polypropylene), a propylene block copolymer (block polypropylene), or any other type of propylene-based resin. Polymers or combinations thereof can be selected. The propylene-based polymer preferably contains 50 mol% or more of propylene monomer. The propylene polymer preferably does not contain a polar group-containing monomer unit. The polypropylene resin (B) is preferably homopolypropylene from the viewpoint of oil resistance, solvent resistance, scratch resistance, and the like. Further, from the viewpoint of gloss and transparency (coloring property), a propylene-α-olefin copolymer is preferable.

  In the polypropylene resin (B) in the present invention, MFR (230 ° C., 2.16 kg load) is preferably more than 2 g / 10 minutes, more preferably 5 g / 10 minutes or more, further preferably 9 g / 10 minutes or more. . By setting the MFR of the polypropylene resin (B) within the above range, effects such as improvement of gloss of the decorative film and improvement of grain transferability can be obtained, and the required surface shape of the molded product ( A decorative molded body having a good appearance can be obtained with respect to gloss, non-gloss, grain and the like.

  Although there is no restriction | limiting in particular about the upper limit of MFR of polypropylene resin (B), Preferably it is 100 g / 10min or less, More preferably, it is 50 g / 10min or less. By setting the MFR within the above range, good oil resistance, solvent resistance, scratch resistance and the like can be exhibited.

  The polypropylene resin (B) may contain additives, fillers, colorants, other resin components, and the like. That is, it may be a resin composition (polypropylene resin composition) of a propylene polymer and additives, fillers, colorants, other resin components, and the like. The total amount of additives, fillers, colorants, and other resin components is preferably 50% by weight or less based on the polypropylene resin composition.

  As an additive, the additive etc. which may be contained in polypropylene resin (A) can be used.

  The polypropylene resin composition is a method of melt-kneading a propylene polymer and additives, fillers, other resin components, etc., and drying other resin components into a melt-kneaded propylene polymer, additives, fillers, etc. It can be produced by a blending method, a method of dry blending a master batch in which additives, fillers and the like are dispersed in a carrier resin at a high concentration in addition to a propylene polymer and other resin components.

  The decorative film of the present invention has a thickness of preferably about 20 μm or more, more preferably about 50 μm or more, and further preferably about 80 μm or more. By setting the thickness of the decorative film to such a value or more, the effect of imparting design properties is improved, the stability at the time of molding is improved, and a better decorative molded body can be obtained. On the other hand, the thickness of the decorative film is preferably about 2 mm or less, more preferably about 1.2 mm or less, and still more preferably about 0.8 mm or less. By making the thickness of the decorative film below such a value, the time required for heating at the time of thermoforming is shortened so that productivity is improved and it becomes easy to trim unnecessary portions.

  When the decorative film is a single layer film, the ratio of the thickness of the layer (I) to the entire decorative film thickness is 100%. When the decorative film is a multilayer film, the ratio of the thickness of the layer (I) to the entire decorative film thickness is preferably 30% or more, more preferably 50% or more. Although there is no restriction | limiting in particular about an upper limit, Preferably it is less than 100%. If the ratio of the thickness of the layer (I) to the whole decorative film is in the range of the above value, it is possible to avoid the thermoformability of the decorative film becoming insufficient.

Production of decorative film The decorative film of the present invention can be produced by various known forming methods.
For example, a method of extruding a layer (I) made of a polypropylene resin (A), a method of coextruding a layer (I) made of a polypropylene resin (A) and another layer, On one surface of the layer, a thermal lamination method in which another layer is bonded by applying heat and pressure, a dry lamination method in which the layer (I) and another layer are bonded through an adhesive, and a wet lamination method, Examples include an extrusion lamination method and a sand lamination method in which a polypropylene resin is melt-extruded on one surface of one layer that has been extruded in advance. As a device for forming the decorative film, a known (co) extrusion T-die molding machine or a known laminate molding machine can be used. Among these, from the viewpoint of productivity, a (co) extrusion T-die molding machine is preferably used.

  As a method of cooling the molten decorative film extruded from the die, a method of bringing the molten decorative film into contact with one cooling roll through the air discharged from the air knife unit or the air chamber unit, There is a method of cooling by pressure bonding with a plurality of cooling rolls.

  In the case of imparting gloss to the decorative film of the present invention, a method is used in which a mirror-like cooling roll is surface-transferred onto the design surface of the decorative film as a product and mirror-finished.

  Furthermore, the surface of the decorative film of the present invention may have a textured shape. Such a decorative film is a method in which a resin in a molten state extruded from a die is directly pressed between a concavo-convex roll and a smooth roll to transfer the concavo-convex shape to a surface, and a smooth film having a concavo-convex shape. It can manufacture by the method etc. which press-contact with the applied heating roll and a smooth roll, and surface-transfer the uneven | corrugated shape. Examples of the wrinkle shape include satin finish, animal skin tone, hairline tone, and carbon tone.

  The decorative film of the present invention may be heat-treated after film formation. Examples of the heat treatment method include a method of heating with a hot roll, a method of heating with a heating furnace or a far infrared heater, a method of blowing hot air, and the like.

Decorated molded body As the molded body (decoration object) to be decorated in the present invention, various molded bodies preferably made of a polypropylene resin or a polypropylene resin composition can be used. The molding method of the molded body is not particularly limited, and examples thereof include injection molding, blow molding, press molding, and extrusion molding.

  Polypropylene resin is a non-adhesive polymer because it is non-polar, but the decorative film in the present invention includes a layer (I) made of polypropylene resin (A), so By sticking the decorative object and the decorative film, it is possible to exhibit very high adhesive strength.

  As the base resin of the polypropylene resin and the polypropylene resin composition, various known propylene monomers such as a propylene homopolymer (homopolypropylene), a propylene-α-olefin copolymer, or a propylene block copolymer are mainly used. Various types of raw materials can be selected. Moreover, unless the effects of the present invention are impaired, a filler such as talc may be included for imparting rigidity, or an elastomer may be included for imparting impact resistance. Moreover, you may contain an additive component and another resin component similarly to the polypropylene resin composition which can comprise the decorating film mentioned above.

  In the decorative molded body in which the decorative film in the present invention is bonded to various molded bodies made of polypropylene resin, VOCs contained in the paint and adhesive are greatly reduced, so automobile members, home appliances, vehicles (railways, etc.) ), Building materials, daily necessities and the like.

  In the method for producing a decorative molded body of the present invention, the resin molded body and the decorative film are set in a step of preparing the above-described decorative film, a step of preparing the resin molded body, and a chamber box capable of decompression. A step, a step of reducing the pressure in the chamber, a step of heat-softening the decorative film, a step of pressing the decorative film against the resin molded body, and a step of returning or pressurizing the chamber to atmospheric pressure. To do.

  Three-dimensional decorative thermoforming sets the object to be decorated and a decorative film in a chamber box that can be depressurized, heat-softens the film in a state where the pressure in the chamber is reduced, and presses the film against the object to be decorated. It has the basic process of attaching the decorative film to the surface of the object to be decorated by returning the interior to atmospheric pressure or pressurizing the film, and the film is attached under reduced pressure. As a result, it is possible to obtain a beautiful decorative molded body free from air accumulation. In the production method of the present invention, any known technique can be used as long as the apparatus and conditions are suitable for three-dimensional decorative thermoforming.

  That is, the chamber box may contain all of the object to be decorated, the decorative film, the mechanism for pressing it, the device for heating the decorative film, etc. A plurality of divided parts may be used.

Moreover, the mechanism for pressing a decorating object and a decorating film may be any type that moves the decorating object, moves the decorating film, or moves both.
More specifically, typical molding methods are exemplified below.

  Hereinafter, a method for sticking a decorative film to a decoration object using a three-dimensional decorative thermoforming machine will be exemplarily described with reference to the drawings.

  As shown in FIG. 2, the three-dimensional decorative thermoforming machine of this embodiment includes upper and lower chamber boxes 11 and 12 and thermoforming the decorative film 1 in the two chamber boxes 11 and 12. I am doing so. A vacuum circuit (not shown) and an air circuit (not shown) are respectively connected to the upper and lower chamber boxes 11 and 12.

  Further, a jig 13 for fixing the decorative film 1 is provided between the upper and lower chamber boxes 11 and 12. The lower chamber box 12 is provided with a table 14 that can be raised and lowered, and the resin molded body (decoration target) 5 is set on the table 14 (via a jig or directly). The A heater 15 is incorporated in the upper chamber 11, and the decorative film 1 is heated by the heater 15. The decoration object 5 can use a propylene-type resin composition as a base | substrate.

  As such a three-dimensional decorative thermoforming machine, a commercially available molding machine (for example, NGF series manufactured by Fuse Vacuum Co., Ltd.) can be used.

  As shown in FIG. 3, first, with the upper and lower chamber boxes 11 and 12 opened, the decoration object 5 is placed on the table 14 in the lower chamber box 12, and the table 14 is lowered. Subsequently, the decorative film 1 is set on a film fixing jig 13 between the upper and lower chamber boxes 11 and 12.

  As shown in FIG. 4, after the upper chamber box 11 is lowered and the upper and lower chamber boxes 11 and 12 are joined to close the inside of the boxes, the chamber boxes 11 and 12 are brought into a vacuum suction state, and the heater 15 To heat the decorative film 1.

  After the decoration film 1 is heated and softened, as shown in FIG. 5, the table 14 in the lower chamber box 12 is raised while the inside of the upper and lower chamber boxes 11 and 12 is kept in a vacuum suction state. The decorative film 1 is pressed against the decoration target 5 to cover the decoration target 5. Further, as shown in FIG. 6, the decorative film 1 is brought into close contact with the decoration object 5 with a larger force by opening the upper chamber box 11 under atmospheric pressure or supplying compressed air from a pressurized air tank.

  Subsequently, the interiors of the upper and lower chamber boxes 11 and 12 are opened to atmospheric pressure, and the decorative molded body 6 is taken out from the lower chamber box 12. Finally, as illustrated in FIG. 7, an unnecessary edge of the decorative film 1 around the decorative molded body 6 is trimmed.

Molding Conditions The pressure in the chamber boxes 11 and 12 may be such that no air is trapped, and the pressure in the chamber is 10 KPa or less, preferably 3 KPa, more preferably 1 KPa or less.

  Moreover, in the two chamber boxes 11 and 12 divided | segmented up and down by the decorating film 1, the chamber box pressure in the side by which the decorating object 5 and the decorating film 1 are affixed should just be this range, and up and down The draw-down of the decorative film 1 can also be suppressed by changing the pressure of the chamber boxes 11 and 12.

  At this time, a film made of a general polypropylene resin may be greatly deformed or broken by a slight pressure fluctuation due to a decrease in viscosity during heating.

  The decorative film 1 of the present invention is not only difficult to draw down, but also has resistance to film deformation due to pressure fluctuations.

  The heating of the decorative film 1 is controlled by the heater temperature (output) and the heating time. It is also possible to measure the surface temperature of the film with a thermometer such as a radiation thermometer and use it as a guideline for appropriate conditions.

  In the present invention, in order to attach the polypropylene decorative film 1 to the decorative object 5 made of polypropylene resin, it is necessary that the surface of the resin molded body 5 and the decorative film 1 are sufficiently softened or melted.

  Therefore, the heater temperature needs to be higher than the melting temperature of the polypropylene resin constituting the decorating object 5 and the polypropylene resin constituting the decorating film 1. The heater temperature is preferably 160 ° C. or higher, more preferably 180 ° C. or higher, and most preferably 200 ° C. or higher.

  The higher the heater temperature, the shorter the time required for heating. However, until the interior of the decorative film 1 (or the surface opposite to the heater when the heater is installed only on one side) is sufficiently heated, If the temperature of the resin is too high, the moldability is deteriorated and the resin is thermally deteriorated. Therefore, the heater temperature is preferably 500 ° C. or lower, more preferably 450 ° C. or lower, most preferably 400 ° C. It is as follows.

  Although an appropriate heating time varies depending on the heater temperature, it is preferably a heating time of 2 seconds or more after the polypropylene decorative film is heated and the rebound called spring back is completed.

  In other words, the decorative film heated by the heater expands by heating from the solid state and sags once with the melting of the crystal. However, after the spring back, the film is completely melted and the molecules are sufficiently relaxed, so that sufficient adhesion strength can be obtained.

  On the other hand, if the heating time is too long, the film hangs down due to its own weight or deforms due to the pressure difference between the upper and lower chambers. Therefore, the heating time is preferably less than 120 seconds after the end of the springback.

  In the case of decorating a complex shaped article having irregularities or achieving higher adhesion, it is preferable to supply compressed air when the decorative film is brought into close contact with the substrate. The pressure in the upper chamber box when compressed air is introduced is 150 kPa or more, preferably 200 kPa or more, more preferably 250 kPa or more. Although there is no particular limitation on the upper limit, 450 kPa or less, preferably 400 kPa or less is preferable because the device may be damaged if the pressure is too high.

  EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples.

1. Measurement method of various physical properties (i) MFR
In accordance with ISO 1133: 1997 Conditions M, measurement was performed at 230 ° C. and a load of 2.16 kg. The unit is g / 10 minutes.

(Ii) Melting point:
Using a differential operation calorimeter (DSC), once the temperature was raised to 200 ° C. and held for 10 minutes, the temperature was lowered to 40 ° C. at a temperature lowering rate of 10 ° C./min, and again at a temperature rising rate of 10 ° C./min. The temperature at the top of the endothermic peak when measured was taken as the melting point. The unit is ° C.

2. Materials used (1) Polypropylene resin (A), Polypropylene resin (B)
The following polypropylene resins were used.
(A-1): Propylene homopolymer (MFR = 0.4 g / 10 min, Tm = 161 ° C.), manufactured by Nippon Polypro Co., Ltd., trade name “NOVATEC (registered trademark) EA9”
(A-2): Polypropylene resin composition (MFR = 0.0.00) obtained by blending 96% by weight of polypropylene resin (A-1) with 4% by weight of black pigment MB (EPP-K-120601 manufactured by Polycol Kogyo Co., Ltd.). 4g / 10min, Tm = 161 ° C)
(B-1): Propylene homopolymer (MFR = 2.4 g / 10 min, Tm = 161 ° C.), manufactured by Nippon Polypro Co., Ltd., trade name “NOVATEC (registered trademark) FY6”
(B-2): Propylene homopolymer (MFR = 10 g / 10 min, Tm = 161 ° C.), manufactured by Nippon Polypro Co., Ltd., trade name “NOVATEC (registered trademark) FA3KM”
(B-3): Polypropylene resin (B-2) 96% by weight, MFR = 11 g / 10 min white pigment MB (Polycol Kogyo Co., Ltd. EPP-W-59578, titanium oxide content 80% by weight) 4% by weight blended polypropylene resin composition (MFR = 10 g / 10 min, Tm = 161 ° C.)
(B-4): Polypropylene resin composition obtained by blending 100 parts by weight of polypropylene resin (B-2) with 0.4 parts by weight of a nucleating agent (trade name “Millad NX8000J” manufactured by Milliken Japan Co., Ltd.) (MFR = 10 g / 10 min, Tm = 164 ° C.)
(B-5): Propylene-α-olefin copolymer (MFR = 7 g / 10 min, Tm = 125 ° C., Mw / Mn = 2.5) by metallocene catalyst, manufactured by Nippon Polypro Co., Ltd., trade name “ Wintech (registered trademark) WFX4M "
(B-6): Polypropylene resin composition obtained by blending 0.4 parts by weight of a nucleating agent (trade name “Millad NX8000J”, manufactured by Milliken Japan Co., Ltd.) with 100 parts by weight of a polypropylene resin (B-5). (MFR = 7 g / 10 min, Tm = 127 ° C.)
(B-7): Polypropylene resin composition (MFR = 10 g / 10) obtained by blending 96% by weight of polypropylene resin (B-2) with 4% by weight of silver pigment MB (PPCM913Y-42 SILVER21X manufactured by Toyocolor Co., Ltd.) Min, Tm = 161 ° C.)

(2) Polypropylene resin (X) used for resin molding
The following polypropylene resins were used.
(X-1): Propylene homopolymer (MFR = 40 g / 10 min, Tm = 165 ° C.), manufactured by Nippon Polypro Co., Ltd., trade name “NOVATEC (registered trademark) MA04H”
(X-2): Propylene ethylene block copolymer (MFR = 30 g / 10 min, Tm = 164 ° C.), manufactured by Nippon Polypro Co., Ltd., trade name “Novatech (registered trademark) NBC03HR”
(X-3): 60% by weight of polypropylene resin (X-2), 20% by weight of EBR (Tafmer (registered trademark) A0550S manufactured by Mitsui Chemicals, Inc.) with MFR = 1.0, inorganic filler (Nippon Talc) Polypropylene resin composition blended with 20% by weight of Talc P-6, average particle size 4.0 μm, manufactured by

3. Production of Resin Molded Body (Substrate) Using polypropylene resins (X-1) to (X-3), injection molding was performed by the following method to obtain a resin molded body (substrate).
Injection molding machine: “IS100GN” manufactured by Toshiba Machine Co., Ltd., mold clamping pressure: 100 tons Cylinder temperature: 200 ° C.
Mold temperature: 40 ℃
Injection mold: Width x height x thickness = 120 mm x 120 mm x 3 mm flat plate condition adjustment: hold for 5 days in a constant temperature and humidity chamber at a temperature of 23 ° C and a humidity of 50% RH

Example 1
-Production of decorative film Polypropylene resin (A-1) was extruded using a 40 mm (diameter) extruder under conditions of a resin temperature of 240 ° C and a discharge rate of 13 kg / h, a temperature of 240 ° C and a die width. It was introduced into a single layer T die adjusted to 400 mm and a lip opening of 0.8 mm, and melt extrusion was performed. The melt-extruded film was cooled and solidified with a cooling roll rotating at 80 ° C. at 3 m / min to obtain a single-layer unstretched film having a thickness of 200 μm. The unstretched film constitutes the decorative film layer (I).

-Three-dimensional decoration thermoforming As the resin molding (base | substrate) 5, the injection molding which consists of the polypropylene resin (X-1) obtained by the above was used.
As a three-dimensional decorative thermoforming apparatus, “NGF-0406-SW” manufactured by Fuse Vacuum Co., Ltd. was used. The decorative film 1 was cut out with a width of 250 mm × a length of 350 mm so that the longitudinal direction was the MD direction of the film, and the opening was set in a film fixing jig 13 having a size of 210 mm × 300 mm. The resin molded body (base body) 5 is placed on a table 14 positioned below the film fixing jig 13 and placed on a sample mounting table having a height of 20 mm, “Nystack NW-K15” manufactured by Nichiban Co., Ltd. ”Pasted through. The film fixing jig 13 and the table 14 were installed in the chambers 11 and 12, the chambers were closed, and the chamber boxes 11 and 12 were sealed. The chamber box is divided up and down via the decorative film 1. In the state which vacuum-sucked the upper and lower boxes and reduced pressure from atmospheric pressure (101.3 kPa) to 1.0 kPa, the far-infrared heater 15 installed on the upper chamber box 11 is started at an output of 80%, and the decorative film 1 is Heated. Vacuum suction was continued during heating, and the pressure was finally reduced to 0.1 kPa. The decorative film 1 is heated to sag temporarily, and then 20 seconds after the end of the springback phenomenon, the table 14 installed in the lower chamber box 12 is moved upward to form a resin molded body. (Substrate) 5 was pressed against the decorative film 1, and immediately after that, compressed air was fed so that the pressure in the upper chamber box 11 was 270 kPa, thereby bringing the resin molded body (substrate) 5 and the decorative film 1 into close contact. In this way, a three-dimensional decorative thermoformed product 6 in which the decorative film 1 was adhered to the upper surface and the side surface of the resin molded body (substrate) 5 was obtained.

-Physical property evaluation (1) Evaluation of the appearance of a decorative molded body A draw-down state of a decorative film at the time of three-dimensional decorative thermoforming, and pasting of a decorative film of a decorative molded body with a decorative film attached to a base The wearing state was visually observed and evaluated according to the following criteria.
○: At the time of three-dimensional decorative thermoforming, the decorative film did not draw down, and the contact between the substrate and the decorative film was made simultaneously on the entire contact surface, so contact unevenness did not occur and it was evenly attached ing.
Δ: Since the decorative film was slightly drawn down during the three-dimensional decorative thermoforming, the decorative film contacted from the center of the base, and contact unevenness occurred at the upper end of the base.
X: During the three-dimensional decorative thermoforming, the decorative film was greatly drawn down, so contact unevenness occurred on the entire surface of the substrate.

(2) Gloss (gloss) near the center of a three-dimensional decorative thermoformed product with a gloss decorative film attached, using Nippon Denshoku Industries Co., Ltd. GLOSS meter Gloss Meter VG2000 at an incident angle of 60 °. It was measured. The measuring method was based on JIS K7105-1981. The measurement results are shown in Table 1.

(3) Adhesive strength between resin molded body (base) and decorative film “Craft adhesive tape No. 712N” manufactured by Nitoms Co., Ltd. was cut into a width of 75 mm and a length of 120 mm, from the end of the resin molded body (base). A masking process was applied to a resin molded body (substrate) in a range of 75 mm × 120 mm (substrate surface exposed portion was 45 mm wide and 120 mm long). It installed in the three-dimensional decorative thermoforming apparatus NGF-0406-SW so that the masking surface of the resin molded body (substrate) was in contact with the decorative film, and three-dimensional decorative thermoforming was performed.

The decorative film surface of the obtained decorative molded body was cut to the substrate surface with a width of 10 mm using a cutter in a direction perpendicular to the longitudinal direction of the adhesive tape to prepare a test piece. In the obtained test piece, the bonding surface between the base and the decorative film is 10 mm wide × 45 mm long. Attach to the tensile tester so that the base part of the test piece and the decorative film part are 180 °, measure the 180 ° peel strength of the adhesive surface at a tensile speed of 200 mm / min, and take the maximum strength at the time of peeling or breaking (N / 10 mm) was measured 5 times, and the average strength was defined as the adhesive strength.
Table 1 shows the physical property evaluation results of the obtained decorative molded body.
Since the MFR of the polypropylene resin (A-1) was 2 g / 10 min or less, the obtained decorative molded body was excellent in appearance and adhesive strength.

(4) Recyclability evaluation The obtained decorative molded body was pulverized, and a recycled molded body was produced by injection molding in the same manner as in the production of a resin molded body (substrate). The obtained recycled molded article was excellent in appearance (evaluation “◯” in the table).

Example 2
In the three-dimensional decorative thermoforming of Example 1, evaluation was performed in the same manner as in Example 1 except that the base was changed to an injection-molded body using resin (X-2). The obtained results are shown in Table 1.
Since the MFR of the polypropylene resin (A-1) was 2 g / 10 min or less, the obtained decorative molded body was excellent in appearance and adhesive strength. The recycled molded body was excellent in appearance.

Example 3
In the three-dimensional decorative thermoforming of Example 1, evaluation was performed in the same manner as in Example 1 except that the base was changed to an injection-molded body using resin (X-3). The obtained results are shown in Table 1.
Since the MFR of the polypropylene resin (A-1) was 2 g / 10 min or less, the obtained decorative molded body was excellent in appearance and adhesive strength. The recycled molded body was excellent in appearance.

Example 4
-Manufacture of a decorative film For the manufacture of a decorative film, a lip opening of 0.8 mm, to which an extruder for surface layer having a diameter of 30 mm (diameter) and an extruder-2 having a diameter of 40 mm (diameter) were connected, A two-type two-layer T die having a die width of 400 mm was used. The polypropylene resin (B-2) and the polypropylene resin (A-1) are fed into the surface layer extruder-1 and the extruder-2, respectively, and discharged from the surface layer extruder-1 at a resin temperature of 240C. Melt extrusion was performed under the conditions of 4 kg / h for the amount and 12 kg / h for the discharge amount of the extruder-2.
The melt-extruded film is cooled and solidified so that the surface layer is in contact with a cooling roll rotating at 80 ° C. and 3 m / min, and a two-layer structure in which a surface layer having a thickness of 50 μm and a layer having a thickness of 150 μm are laminated. An unstretched film was obtained. The obtained unstretched film is a decorative film including the layer (I) and the surface layer (II).
Otherwise, the evaluation was performed in the same manner as in Example 1. The obtained results are shown in Table 1.
Since the MFR of the polypropylene resin (A-1) constituting the layer (I) is 2 g / 10 minutes or less, the obtained decorative molded body was excellent in appearance and adhesive strength. Moreover, it was a result which was excellent in glossiness by having laminated | stacked polypropylene-type resin (B-2) on layer (I) as a surface layer [layer (II)].

Example 5
In the production of the decorative film of Example 4, evaluation was performed in the same manner as in Example 4 except that the composition of the surface layer was changed from the polypropylene resin (B-2) to the polypropylene resin (B-3). The results are shown in Table 1.
Since the MFR of the polypropylene resin (A-1) constituting the layer (I) is 2 g / 10 minutes or less, the obtained decorative molded body was excellent in appearance and adhesive strength. Moreover, since the surface layer [Layer (II)] excellent in gloss was colored in white, the appearance was excellent. The recycled molded body was excellent in appearance.

Comparative Example 1
In the production of the decorative film of Example 1, the evaluation was performed in the same manner as in Example 1 except that the polypropylene resin (A-1) was changed to the polypropylene resin (B-1). The results are shown in Table 1.
Since the polypropylene resin composition (B-1) has a high MFR of 2.4 g / 10 min, it is inferior in the stability of thermoforming, and the decorative film has greatly drawn down during three-dimensional decorative thermoforming, so it contacts the entire surface of the substrate. Unevenness occurred, and the appearance of the decorative molded body was extremely inferior.

Example 6
In the production of the decorative film of Example 4, the evaluation was performed in the same manner as in Example 4 except that the polypropylene resin (B-2) was changed to the polypropylene resin (B-4). The results are shown in Table 2.
Since the MFR of the polypropylene resin (A-1) constituting the layer (I) is 2 g / 10 minutes or less, the obtained decorative molded body was excellent in appearance and adhesive strength. Moreover, it was a result which was excellent in glossiness because the polypropylene resin (B-4) to which the nucleating agent was added was laminated on the layer (I) as the surface decoration layer (II).

Example 7
In the production of the decorative film of Example 4, the evaluation was performed in the same manner as in Example 4 except that the polypropylene resin (B-2) was changed to the polypropylene resin (B-5). The results are shown in Table 2.
Since the MFR of the polypropylene resin (A-1) constituting the layer (I) is 2 g / 10 minutes or less, the obtained decorative molded body was excellent in appearance and adhesive strength. Moreover, it was a result which was excellent in glossiness by having laminated | stacked polypropylene resin (B-5) on layer (I) as surface decoration layer (II).

Example 8
In the production of the decorative film of Example 4, the evaluation was performed in the same manner as in Example 4 except that the polypropylene resin (B-2) was changed to the polypropylene resin (B-6). The results are shown in Table 2.
Since the MFR of the polypropylene resin (A-1) constituting the layer (I) is 2 g / 10 minutes or less, the obtained decorative molded body was excellent in appearance and adhesive strength. Moreover, it was the result which was excellent in glossiness because the polypropylene resin (B-6) to which the nucleating agent was added was laminated on the layer (I) as the surface decoration layer (II).

Example 9
In the production of the decorative film of Example 4, the evaluation was performed in the same manner as in Example 4 except that the polypropylene resin (A-1) was changed to the polypropylene resin (A-2). The results are shown in Table 2.
Since the MFR of the polypropylene resin (A-2) constituting the layer (I) is 2 g / 10 min or less, the obtained decorative molded body is excellent in appearance and adhesive force, and the layer (I) is black. Because of being colored, it was excellent in appearance. Moreover, it was a result which was excellent in glossiness by having laminated | stacked polypropylene resin (B-2) on layer (I) as surface decoration layer (II).

Example 10
In the production of the decorative film of Example 4, the polypropylene resin (A-1) was changed to the polypropylene resin (A-2), and the polypropylene resin (B-2) was changed to the polypropylene resin (B-7). Except for the above, evaluation was performed in the same manner as in Example 4. The results are shown in Table 2.
Since the MFR of the polypropylene resin (A-2) constituting the layer (I) is 2 g / 10 minutes or less, the obtained decorative molded body was excellent in appearance and adhesive strength. Moreover, it was the result which was excellent in glossiness by having laminated | stacked polypropylene resin (B-7) on layer (I) as surface decoration layer (II). Furthermore, since the layer (I) was colored black and the layer (II) was colored silver, it became a metallic film and was excellent in appearance.

1 decorative film 2 layers (I)
3 Surface decoration layer (II)
5 Resin molded body (decoration object, substrate)
6 Decorative Molded Body 11 Upper Chamber Box 12 Lower Chamber Box 13 Jig 14 Table 15 Heater

Claims (5)

A decorative film for sticking by thermoforming on a resin molded body, the decorative film including a layer (I) made of a polypropylene resin (A),
The polypropylene-based resin (A) has a MFR (230 ° C., 2.16 kg load) of 2 g / 10 min or less.   The decorating film has a surface decorating layer (II) made of a surface decorating layer resin on the side of the layer (I) opposite to the sticking surface side with the resin molded body. The decorative film according to claim 1.   The said surface decoration layer resin consists of a polypropylene-type resin (B), and MFR (230 degreeC, 2.16kg load) of this polypropylene-type resin (B) exceeds 2 g / 10min, It is characterized by the above-mentioned. The decorative film described in 1.   A step of preparing the decorative film according to any one of claims 1 to 3, a step of preparing a resin molded body, a step of setting the resin molded body and the decorative film in a chamber box capable of decompression, a chamber A step of depressurizing the interior, a step of heating and softening the decorative film, a step of pressing the decorative film against the resin molded body, and a step of returning or pressurizing the interior of the chamber to atmospheric pressure. Manufacturing method of a molded object.   The said resin molding consists of a propylene-type resin composition, The manufacturing method of the decorative molded body of Claim 4 characterized by the above-mentioned.

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