JP2019111727A - Decorative molding and method for producing the same - Google Patents

Abstract

To provide a decorative molding which is lightweight, is excellent in heat insulation property and sound insulation property, cushion property and energy absorption property, and is excellent in molded body surface appearance such as surface glossiness and touch feeling.SOLUTION: There is provided a decorative molding in which a polypropylene decorative film is stuck onto an injection foam resin molding by thermal molding. The injection foam resin molding is a resin molding which contains a polypropylene resin satisfying the following requirements (i) to (i), and has a foam ratio of 1.1 times or more and 10 times or less. (i): a melt peak temperature Tm of 110°C or higher. (ii) an MFR (230°C and load of 2.16 kg) of 0.01 g/10 min or more and 300 g/10 min or less. The polypropylene decorative film contains a layer (I) formed of a polypropylene resin (A) having an MFR of 2 g/10 min or less.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a decorated molded body and a method of manufacturing the same. Specifically, a method for producing a decorated molded article excellent in the surface shape obtained by sticking a polypropylene-based decorative film by thermoforming on the surface of an injection-foamed resin molded article made of a polypropylene-based resin and a method for producing the decorated molded article About.

  Injection molded foams of polypropylene based resins have excellent properties such as heat insulation, sound insulation, cushioning, and energy absorption, and are therefore used in a wide range of applications such as automotive parts. In particular, in recent years, weight reduction of materials and reduction of environmental impact have become important technological development subjects from the viewpoint of environmental measures such as low emission gas and improvement of fuel consumption, so the technical domain where foam molded articles are used tends to expand. There is a growing demand for resins with high foaming performance.

  Until now, various attempts have been made on a method of molding an injection molded foam made of a polypropylene resin. As an attempt to improve the polypropylene-based resin, a method of increasing the melt tension of a polypropylene-based resin composition by adding a crosslinking agent or a silane graft thermoplastic resin to a linear polypropylene-based resin (patent documents 1 and 2), strain hardening Method to obtain a foam-molded product using HMS-PP (high melt strength-polypropylene) having flexibility (Patent Document 3), the foaming performance is improved by adding a polypropylene-based resin with high melt tension to linear polypropylene A method (Japanese Patent Application Laid-Open No. 2000-112118) has been proposed.

  As an approach from the molding method, for example, a method in which the inside of the mold cavity is previously pressurized with a pressure higher than the foaming pressure (Patent Document 5), the non-foamable resin and the foamable resin are injected and filled in the mold cavity sequentially. A method (patent document 6), a method of heating a mold to a high temperature beforehand (patent document 7), and the like are known. Further, in recent years, molding methods such as a counter pressure method and a heat and cool method have been proposed.

Japanese Patent Application Laid-Open No. 61-152754 Japanese Patent Application Laid-Open No. 7-109372 JP 2001-26032 A JP, 2011-068819, A JP-A-59-227425 Japanese Patent Application Laid-Open No. 58-197029 JP 2002-307473 A

The methods of Patent Documents 1 to 4 have not been able to improve the appearance of appearance defects called silver streaks (or swirl marks) or flow marks on the surface of the molded body. In the methods of Patent Documents 5 to 7 described above, there is a problem in the economics such as the increase in the size and the complexity of the mold and the molding apparatus. In molding methods such as the counter pressure method and the heat and cool method, there are problems such as appearance defects called avatars or that the expansion ratio can be increased only up to twice or less.
The object of the present invention is, in view of the above-mentioned prior art, a decorated molded article which is lightweight, is excellent in heat insulation, sound insulation, cushioning, energy absorption, etc., and is excellent in surface appearance of molded article such as surface gloss and touch. It is to provide.

  As a result of earnest research, the present inventors are so adhered that a polypropylene-based decorative film composed of a specific layer made of a polypropylene-based resin satisfying a specific requirement is bonded to a foamed resin-made product made of a polypropylene-based resin Because of the above, it is possible to provide a decorated molded body that is lightweight, is excellent in heat insulation, sound insulation, cushioning properties, energy absorbability, etc., and has a surface appearance such as surface gloss and touch.

The present invention has the following configuration. That is, the present invention is a decorative molded body in which a polypropylene-based decorative film is attached by thermoforming on an injection-foamed resin molded body, and the polypropylene-based decorative film is made of a polypropylene-based resin (A) A layer (I) is included, and the polypropylene resin (A) has an MFR (230 ° C., 2.16 kg load) of 2 g / 10 min or less, and the injection-foamed resin molded article has the following requirements (i) It is a resin molding characterized by including a polypropylene-based resin (i) satisfying ii) and having an expansion ratio of 1.1 times or more and 10 times or less.
(I): The melting peak temperature Tm is 110 ° C. or more.
(Ii): MFR (230 ° C., 2.16 kg load) is not less than 0.01 g / 10 minutes and not more than 300 g / 10 minutes.

Further, the present invention is a decorative molded body in which a polypropylene-based decorative film is stuck on a resin molded body by thermoforming, and the polypropylene-based decorative film is a layer comprising a polypropylene-based resin (A) (I ) And a polypropylene-based resin (B), and the polypropylene-based resin (A) has a MFR (230 ° C., 2.16 kg load) of 2 g / 10 min or less, the polypropylene-based resin (B) MFR (230 ° C., 2.16 kg load) exceeds 2 g / 10 min, and the injection-foamed resin molded article contains a polypropylene resin (A) satisfying the following requirements (i) to (ii) It is a resin molding whose magnification is 1.1 times or more and 10 times or less, and the polypropylene-based decorative film and the injection foamed resin molding are adhered via a seal layer (II). A decorative molded body, which is a body.
(I): The melting peak temperature Tm is 110 ° C. or more.
(Ii): MFR (230 ° C., 2.16 kg load) is not less than 0.01 g / 10 minutes and not more than 300 g / 10 minutes.

In the present invention, when MFR of the polypropylene resin (A) is MFR (A) and MFR of the polypropylene resin (B) is MFR (B), the following relational expression (1) is satisfied. It is said decoration molded object which is said.
MFR (B) / MFR (A)> 1.5 (1)

Further, the present invention is characterized in that the polypropylene-based decorative film has a surface decoration layer (III) made of a surface decoration layer resin on the surface opposite to the bonding surface with the resin molded body. The above-mentioned decorated molding.
In the present invention, the surface decorative layer resin is made of a polypropylene resin (D), and MFR (230 ° C., 2.16 kg load) of the polypropylene resin (D) exceeds 2 g / 10 min. It is the said decorated molded object made into the characteristics.

  Moreover, this invention is a method of manufacturing said decorated molded object, Comprising: The step of preparing a polypropylene-type decorative film, The step of preparing the injection foaming resin molded object whose foaming ratio is 1.1 times or more and 10 times or less Setting the injection foam resin molding and the decoration film in a depressurizable chamber box, depressurizing the inside of the chamber, heating and softening the decoration film, the injection foam resin molding. A method for producing a decorated formed body, comprising the steps of: pressing the decorative film; and returning the pressure in the chamber to atmospheric pressure.

According to the decorative molded product of the present invention, a polypropylene-based decorative film composed of a specific layer made of a polypropylene-based resin satisfying specific requirements is bonded to an injection-foamed resin molded product made of a specific polypropylene-based resin It is possible to provide a decorated molded body that is lightweight, excellent in heat insulation, sound insulation, cushioning, energy absorption, etc., and has a surface appearance such as surface gloss and touch. did.
Furthermore, according to the method for producing a decorative molded article of the present invention, there are no holes or wrinkles on the surface, no air entrapment between the decorative film and the resin molded article, and a beautiful decorative mold in which a scratch is not noticeable You can get the body. In addition, the decorative film can be beautifully attached to a resin molded body having a complicated shape which has been difficult to be bonded conventionally. Furthermore, the decorative molded body obtained in this manner does not contain a thermosetting resin layer, so that the appearance and performance thereof are not significantly reduced at the time of recycling, and the recycling suitability is high.

It is a figure which shows the example of the laminated constitution of the decorating molded body of this invention. It is a schematic cross section explaining the outline | summary of the apparatus used for the manufacturing method of the decorating molded object of this invention. It is a schematic cross section explaining the mode that the resin molding and the decoration film were set in the apparatus of FIG. It is a schematic cross section explaining the mode of heating and pressure-reducing the inside of the apparatus of FIG. It is a schematic cross section explaining the mode that a decoration film is pressed on a resin molding in the apparatus of FIG. FIG. 3 is a schematic cross-sectional view for explaining how the inside of the apparatus of FIG. 2 is returned to atmospheric pressure or pressurized. In the obtained decorative molded object, it is a schematic cross section explaining the mode that the edge of the unnecessary decorative film was trimmed.

  In the present specification, a decorative film refers to a film for decorating a formed 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 thermoforming the decorative film along the adhering surface of the molded body and simultaneously attaching it. In this process, in order to suppress air being trapped between the decorative film and the molded body, thermoforming is performed under reduced pressure (vacuum), and the heated decorative film is attached to the molded body, and pressure is applied. It refers to molding, which is a process of bringing into close contact by releasing (pressurizing). Hereinafter, modes for carrying out the present invention will be described in detail.

The basic configuration of the decorated molded article of the present invention is a decorated molded article in which a polypropylene-based decorative film is stuck on an injection-foamed resin molded article by thermoforming, and the injection-foamed resin molded article has the following requirements It is a resin molding characterized by including a polypropylene resin (A) satisfying (i) to (ii) and having an expansion ratio of 1.1 times or more and 10 times or less.
(I): The melting peak temperature Tm is 110 ° C. or more.
(Ii): MFR (230 ° C., 2.16 kg load) is not less than 0.01 g / 10 minutes and not more than 300 g / 10 minutes.

In the first aspect of the decorated molded body according to the present invention, in the basic configuration of the decorated molded body, the polypropylene-based decorative film includes a layer (I) made of a polypropylene-based resin (A), and the polypropylene-based resin (A) is a molded object whose MFR (230 degreeC, 2.16 kg load) is 2 g / 10 minutes or less.
In the second aspect of the decorated molded body according to the present invention, in the basic configuration of the decorated molded body, the polypropylene-based decorative film comprises a layer (I) comprising a polypropylene-based resin (A) and a polypropylene-based resin (B) The polypropylene-based resin (A) has a MFR (230 ° C., 2.16 kg load) of 2 g / 10 min or less, and the polypropylene-based resin (B) has an MFR (230 ° C., 2.16 kg load) exceeds 2 g / 10 min, and the polypropylene-based decorative film and the resin molded product are molded products attached via the seal layer (II).

Polypropylene resin (A)
In one aspect of the present invention, the decorative film includes the layer (I) made of a polypropylene resin (A), thereby suppressing the occurrence of appearance defects due to the film being broken or violent during thermoforming. I can do it. Since the thermoforming property of a decoration film is improved by this, it is not necessary to include the thermosetting resin layer which is excellent in thermoforming property.

  The polypropylene-based resin (A) in the present invention is a propylene-based resin of various types such as propylene homopolymer (homopolypropylene), propylene-α-olefin copolymer (random polypropylene), and propylene block copolymer (block polypropylene). Polymers, or combinations thereof, can be selected. The propylene-based polymer preferably contains 50 mol% or more of a 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 making MFR of a polypropylene resin (A) below into the said value, a decorative molded object with a favorable external appearance can be obtained.

  The lower limit of the MFR of the polypropylene resin (A) is not particularly limited, but is preferably 0.1 g / 10 minutes or more, and more preferably 0.3 g / 10 minutes or more. By making MFR more than said value, the moldability at the time of manufacture of a decorating film improves, and it can suppress that the appearance defect called a shark skin or interface roughening generate | occur | produces on the film surface.

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

  The polypropylene resin (A) in the present invention preferably has high crystallinity from the viewpoint 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., and 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 if the low melting point component is included 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 preferred 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, an additive, a filler, a colorant, and other resin components. 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 a polypropylene resin (A) is a polypropylene resin composition, it is preferable that a polypropylene resin composition has the characteristic of said 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 decorated molded body of the present invention is molded as a colored molded body, it is sufficient to use a coloring agent only for the decorating film, so use of an expensive coloring agent as compared to the case of coloring the entire resin molded body It is possible to suppress In addition, it is possible to suppress the change in physical properties associated with the blending of the colorant.

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

  Examples of the antioxidant include phenol-based antioxidants, phosphite-based antioxidants, and thio-based antioxidants. As a neutralizing agent, higher fatty acid salts such as calcium stearate and zinc stearate can be exemplified. Examples of light stabilizers and ultraviolet light absorbers include hindered amines, benzotriazoles, benzophenones and the like.

  Examples of crystal nucleating agents include metal amides of aromatic carboxylic acids, metal salts of aromatic phosphates, sorbitol derivatives, metal salts of rosin, and amide nucleating agents. Among these crystal nucleating agents, aluminum p-t-butylbenzoate, phosphoric acid 2,2'-methylenebis (4,6-di-t-butylphenyl) sodium, phosphoric acid 2,2'-methylenebis (4) , 6-di-t-butylphenyl) aluminum, bis (2,4,8,10-tetra-tert-butyl-6-hydroxy-12H-dibenzo [d, g] [1,2,3] dioxaphospho A complex of aluminum (6-hydroxyl) hydroxide and an organic compound, p-methyl-benzylidene sorbitol, p-ethyl-benzylidene sorbitol, 1,2,3-trideoxy-4,6: 5,7-bis- [ Examples include (4-propylphenyl) methylene] -nonitol, sodium salts of rosin and the like.

  As the lubricant, higher fatty acid amides such as stearic acid amide can be exemplified. As an antistatic agent, fatty acid partial esters, such as glycerol fatty acid monoester, etc. can be illustrated. Examples of metal deactivators include triazines, phosphones, epoxies, triazoles, hydrazides, oxamides and the like.

  As the filler, various known fillers that can be used for polypropylene resins, such as inorganic fillers and organic fillers, can be blended. Examples of the inorganic filler include calcium carbonate, silica, hydrotalcite, zeolite, aluminum silicate, magnesium silicate, glass fiber, carbon fiber and the like. Further, as the organic filler, crosslinked rubber fine particles, thermosetting resin fine particles, thermosetting resin hollow fine particles, and the like can be exemplified.

  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 design property, and various coloring agents, such as an inorganic pigment, an organic pigment, dye, can be used for coloring. In addition, bright materials such as aluminum flakes, titanium oxide flakes and (synthetic) mica can also be used.

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

Decorative Film The decorative film of the first aspect in the present invention comprises a layer (I) comprising a polypropylene resin (A). That is, the decorative film may be a single layer film comprising layer (I) or a multilayer film comprising layer (I) and another layer. The decorative film of the present invention can have various configurations in addition to the layer (I). The decorative film of the present invention may have emboss, emboss, print, sandplast, scratch, etc. on its surface.

  The decorative film has a high degree of freedom in shape, and since the end face of the decorative film is wound up to the back side of the object to be decorated, no seam is generated, and the appearance is excellent, and furthermore, the surface of the decorative film is embossed. Can express various textures. For example, in the case of applying a texture such as embossing to a resin molded body, three-dimensional decorative thermoforming may be performed using the embossed decorative film. For this reason, the problem in the case of molding with a molded body mold to which embossing is applied, that is, the molded body mold is required for each embossing pattern, it is very difficult and expensive to complexly emboss a curved mold. It is possible to solve the problem of being, and to obtain a decorated molded body to which embossing of various patterns is easily imparted.

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

  When it is a single layer film as a preferable aspect of a decoration film, it is a film which consists of a polypropylene resin (A) of MFR2g / 10 minutes or less.

  As another preferable embodiment of the decorative film, in the case of a multilayer film having a two-layer structure, a polypropylene having an MFR of 2 g / 10 min or less is an inner layer to be adhered to a surface layer and / or a molded body to be a surface of the decorated molded body. It is a layer which consists of system resin (A). More preferably, the inner layer to be attached to the molded product is a layer comprising a polypropylene resin (A) having a MFR of 2 g / 10 minutes or less.

  As still another preferred embodiment of the decorative film, in the case of a multilayer film having a three-layer structure, the surface layer which is the surface of the decorated molded article, the inner layer to be stuck to the molded article and / or the intermediate layer 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 a MFR of 2 g / 10 minutes or less. More preferably, the inner layer to be attached to the molded product is a layer comprising a polypropylene resin (A) having a MFR of 2 g / 10 minutes or less.

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

  In the multilayer film, layers other than the layer (I) consisting of a polypropylene resin (A) having a MFR of 2 g / 10 minutes or less are preferably layers consisting of a thermoplastic resin, more preferably polypropylene other than the polypropylene resin (A) It is a layer made of a resin. Each layer is preferably a layer not containing a thermosetting resin. By using a thermoplastic resin, the recyclability is improved. Further, by using a polypropylene-based resin other than the polypropylene-based resin (A), complication of the layer structure can be suppressed, and the recyclability is further improved.

  As a further preferable aspect of a decoration film, it is provided in the surface on the opposite side to the sticking surface of the layer (I) which consists of a polypropylene resin (A) of MFR2g / 10 minutes or less, and the resin molding of this layer. And a multilayer film including a surface decoration layer (III) made of a surface decoration layer resin.

  The surface decoration layer resin is preferably made of a thermoplastic resin, more preferably made of a polypropylene resin (D). By using a polypropylene resin (D), it is possible to suppress the complication of the layer structure and the decrease in the recyclability. In addition, by using the polypropylene resin (D) for the surface decoration layer of the decoration film, it is possible to make the solvent resistance and the like excellent. In addition, by using a polypropylene resin (D) for the surface decoration layer, the transferability of the surface at the time of production and thermoforming of the decoration film is improved, and higher glossiness is obtained by using a mirror roll at the time of thermoforming. It can be a decorative film.

  The polypropylene-based resin (D) in the present invention is a propylene-based resin of various types such as propylene homopolymer (homopolypropylene), propylene-α-olefin copolymer (random polypropylene), and propylene block copolymer (block polypropylene). Polymers, or combinations thereof, can be selected. The propylene-based polymer preferably contains 50 mol% or more of a propylene monomer. The propylene-based polymer is preferably one that does not contain a polar group-containing monomer unit. The polypropylene resin (D) is preferably homopolypropylene from the viewpoint of oil resistance, solvent resistance, scratch resistance and the like. Also, from the viewpoint of gloss and transparency (coloring), a propylene-α-olefin copolymer is preferred.

  The MFR (230 ° C., 2.16 kg load) of the polypropylene resin (D) is preferably more than 2 g / 10 min, more preferably 5 g / 10 min or more, still more preferably 9 g / 10 min or more. By setting the MFR of the polypropylene resin (D) within the above range, the effect of improving the gloss of the decorative film, improving the emboss transferability, etc. is obtained, and the required surface shape of the molded body ( With respect to gloss, non-gloss, emboss etc.), it is possible to obtain a decorated molding having a good appearance.

  The upper limit of the MFR of the polypropylene resin (D) is not particularly limited, but it is preferably 100 g / 10 minutes or less, more preferably 50 g / 10 minutes or less. By setting MFR in the above-mentioned range, good oil resistance, solvent resistance, scratch resistance and the like can be exhibited.

  The polypropylene resin (D) may contain additives, fillers, colorants, other resin components, and the like. That is, it may be a resin composition (polypropylene resin composition) comprising a propylene-based polymer and an additive, a filler, a colorant, another resin component, 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 said polypropylene resin (A) can be used.

  The polypropylene-based resin composition is a method of melt-kneading a propylene-based polymer, additives, fillers, other resin components, etc., and other resin components dried by melt-kneading a propylene-based polymer, additives, fillers, etc. It can be manufactured by a method of blending, a method of dry blending a master batch in which an additive, a filler 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 preferably has a thickness of about 20 μm or more, more preferably about 50 μm or more, and still more preferably about 80 μm or more. By setting the thickness of the decorative film to such a value or more, the effect of providing the designability is improved, the stability at the time of molding is also improved, and it becomes possible to obtain a better decorated molded body. 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 equal to or less than this value, the time required for heating at the time of thermoforming is shortened, the 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 total thickness of the decorative film is 100%. When the decorative film is a multilayer film, the ratio of the thickness of the layer (I) to the total thickness of the decorative film is preferably 30% or more, more preferably 50% or more. The upper limit is not particularly limited but is preferably less than 100%. If the ratio of the thickness of the layer (I) to the entire decorative film is in the above range, it can be avoided that the thermoformability of the decorative film becomes insufficient.

  In one aspect (second aspect) of the present invention, the decorative film includes a layer (I) comprising a polypropylene resin (A) and a seal layer (II) comprising a polypropylene resin (B), wherein The resin (A) has a MFR (230 ° C., 2.16 kg load) of 2 g / 10 min or less, and the polypropylene resin (B) has a multilayer of MFR (230 ° C., 2.16 kg load) exceeding 2 g / 10 min A film is mentioned.

Polypropylene resin (A)
As a polypropylene resin (A), the description of said polypropylene resin (A) and layer (I) can be read as it is, or it can be read suitably, and can be applied.

Polypropylene resin (B)
The decorative film of the present invention may make a scratch attached to the surface of a substrate less noticeable by including a seal layer (II) made of a polypropylene resin (B) on the affixing surface with a resin molded product (substrate). To reduce product defects.

  This is because the flowability of the polypropylene resin (B) constituting the sealing layer (II) is higher than that of the polypropylene resin (A) constituting the layer (I) imparting thermoforming properties. Layer (II) is easier to deform than when it is deformed, and the seal layer (II) deforms in accordance with the shape of the scratch when the seal layer (II) is scratched against the scratch of the substrate. Suppress the relief.

In order for the decorative film to exhibit such an effect, the MFR (230 ° C., 2.16 kg load) of the polypropylene resin (B) needs to exceed 2 g / 10 min, preferably 4 g / min. 10 minutes or more. When MFR of the polypropylene resin (A) is MFR (A) and MFR of the polypropylene resin (B) is MFR (B), the following general formula (1) is preferably satisfied.
MFR (B) / MFR (A)> 1.5 (1)

  The ratio MFR (B) / MFR (A) of the MFRs of the polypropylene resin (B) and the polypropylene resin (A) is preferably 2 or more, and more preferably 10 or more. The higher the MFR (B) and the larger the MFR (B) / MFR (A), the greater the effect of suppressing the relief of scratches, but if the MFR (B) / MFR (A) becomes too large, lamination at the time of film formation MFR (B) / MFR (A) is preferably 1000 or less, more preferably 100 or less.

  The polypropylene-based resin (B) in the present invention is a propylene-based resin of various types such as propylene homopolymer (homopolypropylene), propylene-α-olefin copolymer (random polypropylene), and propylene block copolymer (block polypropylene). Polymers, or combinations thereof, can be selected. The propylene-based polymer preferably contains 50 mol% or more of a propylene monomer. The propylene-based polymer is preferably one that does not contain a polar group-containing monomer unit.

  The melting point (DSC melting peak temperature) of the polypropylene resin (B) is preferably 100 to 170 ° C., more preferably 115 to 165 ° C.

  The polypropylene-based resin (B) is preferably a propylene-α-olefin copolymer from the viewpoint of sealability, and the propylene-α-olefin copolymer usually has a melting point lower than that of a propylene homopolymer. Since the crystallization temperature is also lowered, the effect of making the damage easy to be deformed by thermoforming and making the scratches less noticeable is high.

  Moreover, an additive, a filler, the other resin component etc. may be contained in the polypropylene resin (B). That is, it may be a resin composition (polypropylene resin composition) comprising a propylene polymer, an additive, a filler, and other resin components. The total amount of additives, fillers, other resin components and the like is preferably 95% by weight or less based on the polypropylene resin composition.

Additives can be used for polypropylene resins such as antioxidants, neutralizing agents, light stabilizers, ultraviolet light absorbers, crystal nucleating agents, antiblocking agents, lubricants, antistatic agents, metal deactivators, etc. Various known additives can be blended.
Examples of the antioxidant include phenol-based antioxidants, phosphite-based antioxidants, and thio-based antioxidants. As a neutralizing agent, higher fatty acid salts such as calcium stearate and zinc stearate can be exemplified. Examples of light stabilizers and ultraviolet light absorbers include hindered amines, benzotriazoles, benzophenones and the like.

  Examples of crystal nucleating agents include metal amides of aromatic carboxylic acids, metal salts of aromatic phosphates, sorbitol derivatives, metal salts of rosin, and amide nucleating agents. Among these crystal nucleating agents, aluminum p-t-butylbenzoate, phosphoric acid 2,2'-methylenebis (4,6-di-t-butylphenyl) sodium, phosphoric acid 2,2'-methylenebis (4) , 6-di-t-butylphenyl) aluminum, bis (2,4,8,10-tetra-tert-butyl-6-hydroxy-12H-dibenzo [d, g] [1,2,3] dioxaphospho A complex of aluminum (6-hydroxyl) hydroxide and an organic compound, p-methyl-benzylidene sorbitol, p-ethyl-benzylidene sorbitol, 1,2,3-trideoxy-4,6: 5,7-bis- [ Examples include (4-propylphenyl) methylene] -nonitol, sodium salts of rosin and the like.

  As the lubricant, higher fatty acid amides such as stearic acid amide can be exemplified. As an antistatic agent, fatty acid partial esters, such as glycerol fatty acid monoester, etc. can be illustrated. Examples of metal deactivators include triazines, phosphones, epoxies, triazoles, hydrazides, oxamides and the like.

  As the filler, various known fillers that can be used for polypropylene resins, such as inorganic fillers and organic fillers, can be blended. Examples of the inorganic filler include calcium carbonate, silica, hydrotalcite, zeolite, aluminum silicate, magnesium silicate, glass fiber, carbon fiber and the like. Further, as the organic filler, crosslinked rubber fine particles, thermosetting resin fine particles, thermosetting resin hollow fine particles, and the like can be exemplified.

  Other resin components include ethylene-α-olefin random copolymer, thermoplastic elastomer mainly composed of propylene and / or butene, styrenic elastomer, aromatic hydrocarbon resin, polar functional group having a hetero atom The polyolefin resin etc. which it has can be illustrated.

The ethylene-α-olefin random copolymer is preferably a copolymer of ethylene and an α-olefin having 3 to 20 carbon atoms. Specifically as said C3-C20 alpha-olefin, a propylene, 1-butene, 1-pentene, 1-hexene, 4-methyl- 1-pentene, 1-heptene, 1-octene, 1- Decene, 1-dodecene, 1-tetradecene, 1-hexadecene, 1-eicosene and the like can be mentioned. Among these, in particular, propylene, 1-butene, 1-hexene and 1-octene are preferably used.
As commercially available products of such ethylene-α-olefin random copolymer, Kernel series made by Nippon Polyethylene Co., Ltd., Toughmer P series made by Mitsui Chemical Co., Ltd., Tafmer A series, Engage EG series made by DuPont Dow Etc.

As a thermoplastic elastomer containing propylene and / or butene as a main component, thermoplastic elastomer containing propylene as a main component, thermoplastic elastomer containing butene as a main component, thermoplasticity containing a component obtained by combining propylene and butene as a main component Elastomers are included. Such thermoplastic elastomer is preferably a copolymer of propylene and / or butene, and propylene and an α-olefin other than butene. Specific examples of α-olefins include ethylene, 1-pentene, 1-hexene, 4-methyl-1-pentene, 1-heptene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1- Hexadecene, 1-eikosen etc. are mentioned. These α-olefins can be used alone or in combination.
As such thermoplastic elastomers, as commercially available products, Tafmer XM series, Tafmer BL series, Tafmer PN series manufactured by Mitsui Chemicals, Inc., VISTAMAXX series manufactured by ExxonMobil Chemical, etc. may be mentioned.

As styrene-based elastomers, styrene-butadiene-styrene triblock copolymer elastomer (SBS), styrene-isoprene-styrene triblock copolymer elastomer (SIS), styrene-ethylene-butylene copolymer elastomer (SEB), styrene -Ethylene-propylene copolymer elastomer (SEP), styrene-ethylene-butylene-styrene copolymer elastomer (SEBS), styrene-ethylene-butylene-ethylene copolymer elastomer (SEBC), hydrogenated styrene-butadiene elastomer (HSBR) Styrene-ethylene-propylene-styrene copolymer elastomer (SEPS), styrene-ethylene-ethylene-propylene-styrene copolymer elastomer (SEEPS), styrene Tajien butylene - styrene copolymer elastomer (SBBS) or the like can be exemplified, those hydrogenated can be particularly preferably used.
Examples of commercially available products include Dynaron series manufactured by JSR Corporation, Kraton G series manufactured by Kraton Polymer Japan KK, Tuftec series manufactured by Asahi Kasei Corporation, and the like.

  As an aromatic hydrocarbon resin, a hydrocarbon resin obtained by polymerizing a mixture of one or two or more kinds of dicyclopentadiene derivatives such as dicyclopentadiene, methyldicyclopentadiene, dimethyldicyclopentadiene or the like as a main raw material, Hydrogenated coumarone / indene resin, hydrogenated C9 petroleum resin, hydrogenated C5 petroleum resin, C5 / C9 copolymer petroleum resin, hydrogenated terpene resin, hydrogenated rosin resin, etc., and commercial products Specifically, Alcon series manufactured by Arakawa Chemical Co., Ltd., T-REZ series manufactured by Tonen Chemical Co., Ltd., Quintone series manufactured by Nippon Zeon Co., Ltd., manufactured by Idemitsu Kosan Co., Ltd. Imarb series etc. can be mentioned.

  As the polar functional group having a hetero atom, epoxy group, carbonyl group, ester group, ether group, hydroxy group, carboxy group or metal salt thereof, alkoxy group, aryloxy group, acyl group, acyloxy group, acid anhydride group, Examples thereof include amino group, imide group, amido group, nitrile group, thiol group, sulfo group, isocyanate group, halogen group and the like. Specific examples of such polar functional group-containing polyolefins include acid-modified polypropylenes such as maleic anhydride-modified polypropylene, maleic acid-modified polypropylene and acrylic acid-modified polypropylene; ethylene / vinyl chloride copolymer, ethylene / vinylidene chloride copolymer Combined, ethylene / acrylonitrile copolymer, ethylene / methacrylonitrile copolymer, ethylene / vinyl acetate copolymer, ethylene / acrylamide copolymer, ethylene / methacrylamide copolymer, ethylene / acrylic acid copolymer, ethylene / Methacrylic acid copolymer, ethylene / maleic acid copolymer, ethylene / methyl acrylate copolymer, ethylene / ethyl acrylate copolymer, ethylene / isopropyl acrylate copolymer, ethylene / butyl acrylate copolymer , Echire / Isobutyl acrylate copolymer, ethylene / 2-ethylhexyl acrylate copolymer, ethylene / methyl methacrylate copolymer, ethylene / ethyl methacrylate copolymer, ethylene / isopropyl methacrylate copolymer, ethylene / methacrylic acid Butyl copolymer, ethylene / isobutyl methacrylate copolymer, ethylene / 2-ethylhexyl methacrylate copolymer, ethylene / maleic anhydride copolymer, ethylene / ethyl acrylate / maleic anhydride copolymer, ethylene / acrylic Acid metal salt copolymer, ethylene / methacrylic acid metal salt copolymer, ethylene / vinyl acetate copolymer, or a saponified product thereof, ethylene / vinyl propionate copolymer, ethylene / glycidyl methacrylate copolymer, ethylene / Ethyl acrylate / glycidyl methacrylate Copolymers, ethylene or α- olefin / vinyl monomer copolymers such as ethylene / vinyl acetate / glycidyl methacrylate copolymer; and chlorinated polyolefins such as chlorinated polypropylene chlorinated polyethylene. As a commercial item, Mitsui Chemical Co., Ltd. trade name "Admer", Mitsubishi Chemical Corp. trade name "Modic", Sanyo Chemical Industries "Yumex" etc. can be mentioned.

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

Decorative Film The decorative film of the second aspect includes a layer (I) comprising a polypropylene resin (A) and a seal layer (II) comprising a polypropylene resin (B). A decoration film can take various composition other than layer (I) and seal layer (II). That is, the decorative film may be a two-layer film consisting of the layer (I) and the seal layer (II) or a multilayer film consisting of the layer (I) and the seal layer (II) and other layers . In addition, sealing layer (II) adheres along a resin molding (base | substrate). In addition, the decorative film may be embossed, embossed, printed, sandblasted, scratched or the like on its surface.

  The decorative film has a high degree of freedom in shape, and since the end face of the decorative film is wound up to the back side of the object to be decorated, no seam is generated, and the appearance is excellent, and furthermore, the surface of the decorative film is embossed. Can express various textures. For example, in the case of applying a texture such as embossing to a resin molded body, three-dimensional decorative thermoforming may be performed using the embossed decorative film. For this reason, the problem in the case of molding with a molded body mold to which embossing is applied, that is, the molded body mold is required for each embossing pattern, it is very difficult and expensive to complexly emboss a curved mold. It is possible to solve the problem of being, and to obtain a decorated molded body to which embossing of various patterns is easily imparted.

  The multilayer film can include a surface layer, a surface decoration layer, a printing layer, a light shielding layer, a colored layer, a base layer, a barrier layer, a tie layer layer that can be provided between these layers, and the like. Layer (I) which consists of polypropylene resin (A) may be any layer except a sealing layer among the layers which constitute a multilayer film.

  In the multilayer film, layers other than the layer (I) and the seal layer (II) are preferably layers made of a thermoplastic resin, and more preferably layers made of a polypropylene resin. As far as the layers (I) and the seal layer (II) can be distinguished from the layer (I) and the seal layer (II), the MFR (230 ° C., 2.16 kg load) of the constituting polypropylene resin is It is not particularly limited. Each layer is preferably a layer not containing a thermosetting resin. By using a thermoplastic resin, the recyclability is improved, and by using a polypropylene resin, it is possible to suppress the complication of the layer structure, and the recyclability is further improved.

  When the decorative film is a two-layer film, the layer (I) composed of a polypropylene resin (A) constitutes a surface layer opposite to the surface to which the resin molded article is attached, and from the polypropylene resin (B) The seal layer (II) as described above constitutes a seal layer of the bonding surface to the resin molded body.

  When the decorative film is a multilayer film having three or more layers, another layer intervenes between the layer (I) comprising the polypropylene resin (A) and the seal layer (II) comprising the polypropylene resin (B) Then, the effect which suppresses the relief | lifting of the flaw of the base | substrate surface may fall. For this reason, a multilayer film is a layer (I) which consists of a resin composition (A) containing seal layer (II) / polypropylene resin (A) which consists of polypropylene resin (B) from the sticking surface side of a resin molding. A configuration of other layers (including a plurality of layers) is preferable.

As another preferable aspect of a decoration film, the multilayer film containing surface decoration layer (III) which consists of surface decoration layer resin in the outermost surface on the opposite side to the adhesion surface to a resin molding is mentioned. The surface modification layer resin is preferably a thermoplastic resin, more preferably a polypropylene resin (D) having an MFR (230 ° C., 2.16 kg load) exceeding 2 g / 10 min. That is, the layer (I) comprising a polypropylene resin (A) having a MFR of 2 g / 10 minutes or less which improves the thermoformability may generally be inferior in gloss and emboss transferability due to the low MFR. By further providing a layer (III) made of a polypropylene resin (D) on the surface layer, it is possible to improve the gloss and the emboss transferability without significantly reducing the thermoforming property.
Further, by using the polypropylene resin (D), it is possible to suppress the complication of the layer structure and the decrease in the recyclability. In addition, by using the polypropylene resin (D) for the surface decoration layer of the decoration film, it is possible to make the solvent resistance and the like excellent. In addition, by using a polypropylene resin (D) for the surface decoration layer, the transferability of the surface at the time of production of the decoration film and at the time of thermoforming is improved, and when a mirror surface roll is used at the time of thermoforming It can be a decorative film.

Polypropylene resin (D)
As a polypropylene resin (D), the description of said polypropylene resin (D) and surface decoration layer (III) can be read as it is, or it can be read suitably, and can be applied.

  In the second aspect, the polypropylene resin (D) constituting the surface decorative layer (III) may be the same as or different from the polypropylene resin (B) constituting the sealing layer (II).

  In the second aspect, when the polypropylene-based resin (D) constituting the surface decorative layer (III) is a polypropylene-based resin composition, this polypropylene-based resin composition is a polypropylene-based resin constituting the sealing layer (II) It may be the same as or different from the polypropylene resin composition that constitutes the resin (B). When both polypropylene resin compositions are the same, it is possible to form the seal layer (II) and the surface decoration layer (III) using a feed block or the like in one extruder. Have an advantage.

  The decorative film of the present invention preferably has a thickness of about 20 μm or more, more preferably about 50 μm or more, and still more preferably about 80 μm or more. By setting the thickness of the decorative film to such a value or more, the effect of providing the designability is improved, the stability at the time of molding is also improved, and it is possible to obtain a better decorated molded body. 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 equal to or less than this value, the time required for heating at the time of thermoforming is shortened, the productivity is improved, and it becomes easy to trim unnecessary portions.

  In the decorative film of the second aspect, the ratio of the thickness of the layer (I) to the thickness of the entire decorative film is preferably 30 to 99%, and the ratio of the seal layer (II) is preferably 1 to 70%. If the ratio of the thickness of the layer (I) to the entire decorative film is in the above range, it can be avoided that the thermoformability of the decorative film becomes insufficient. Moreover, if the ratio of the thickness of the seal layer (II) occupied in the entire decorative film is in the range of the above value, it is possible to suppress the damage of the resin molded body (substrate) from floating on the surface.

  Moreover, in the multilayer film which provided surface decoration layer (III) which consists of polypropylene resin (D) in the outermost surface of a decoration film, thickness of the whole decoration film of the thickness of layer (III) in a decoration film Preferably, the ratio of at least 30%.

Production of Decorative Film The decorative film of the present invention can be produced by various known molding methods.
For example, a method of extruding layer (I), a method of coextrusion of layer (I) and layer (II), a method of coextrusion of layer (I) and layer (II) and further layers, Thermal lamination method in which the other layer is bonded by heat and pressure on one surface of one layer extruded in advance, dry lamination method in which bonding is performed via an adhesive and wet lamination method, previously extruded The extrusion lamination method which melt-extrudes polypropylene resin on one side of one layer, the sand lamination method, etc. are mentioned. As an apparatus for forming a decoration film, a well-known co-extrusion T-die molding machine and a well-known lamination 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 a molten decorative film extruded from a die, a method of bringing a molten decorative film into contact with one cooling roll via air discharged from an air knife unit or an air chamber unit, The method of pressure-bonding and cooling by several cooling rolls is mentioned.

  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 a design surface of a product of the decorative film to perform mirror processing.

  Furthermore, the surface of the decorative film of the present invention may have an embossed shape. Such a decorative film is a method of directly pressing the molten resin extruded from a die with a roll having a concavo-convex shape and a smooth roll to transfer the concavo-convex shape, a smooth film having a concavo-convex shape It can manufacture by the method etc. of pressure-contacting with the heating roll and the smooth cooling roll which were given. Examples of the emboss shape include satin, animal skin tone, hairline tone, carbon tone and the like.

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

Injection-foamed resin molded article The injection-foamed resin molded article (target to be decorated) to be decorated in the present invention is a resin molded article containing a polypropylene resin (A) and having an expansion ratio of 1.1 to 10 times. It is a decorated molding characterized by the above.

Polypropylene resin (A)
The polypropylene resin composition (a) used in the present invention may be a propylene homopolymer (homopolypropylene), a propylene-α-olefin copolymer, a propylene block copolymer, a polypropylene resin having a branched structure, etc. It contains a polypropylene resin selected from various known types as a main component and satisfies the following requirements (i) to (ii).
(I): The melting peak temperature Tm is 110 ° C. or more.
(Ii): MFR (230 ° C., 2.16 kg load) is not less than 0.01 g / 10 minutes and not more than 300 g / 10 minutes.

  The melting peak temperature Tm of the polypropylene resin (A) needs to be 110 ° C. or more, preferably 125 ° C. or more, more preferably 130 ° C. or more, because a problem occurs in practical use due to a decrease in heat resistance and a decrease in rigidity. It is. The melting peak temperature Tm can be controlled by adjusting the catalyst used and the content of ethylene copolymerized with propylene.

  The MFR (230 ° C., 2.16 kg load) of the polypropylene resin (A) is 0.5 to 200 g / 10 min, preferably 1 to 150 g / 10 min, more preferably 5 to 100 g / 10 min . Within the above range, it is possible to suppress the deterioration of the molded appearance that occurs during the production of the molded body, such as the reduction of the weld appearance.

  The polypropylene-based resin is mainly made of various known propylene monomers such as propylene homopolymer (homopolypropylene), propylene-α-olefin copolymer, propylene block copolymer, and polypropylene-based resin having a branched structure. You can choose one of the following types.

Polypropylene resin (A)
The polypropylene-based resin (a) of the present invention, as an optional additive component, is a thermoplastic elastomer, a modified polyolefin, a molecular weight depressant, a lubricant, an antioxidant, a neutralizing agent, light, as long as the effects of the present invention are not significantly impaired. Various optional additives such as stabilizers, UV absorbers, crystal nucleating agents, antistatic agents, metal deactivators, fillers and the like can be contained.
The optional additive components may be used in combination of two or more. In the invention, the total amount of optional additive components is preferably 50% by weight or less based on the polypropylene resin composition, and is appropriately selected according to the purpose.

  When the polypropylene-based resin (A) is a polypropylene-based resin composition, it is preferable that the polypropylene-based resin composition has the characteristics of the polypropylene-based resin (A). That is, the melting peak temperature Tm of the polypropylene resin composition is 110 ° C. or more, and the MFR (230 ° C., 2.16 kg load) of the polypropylene resin composition is 0.01 g / 10 min or more and 300 g / 10 min or less .

The above-mentioned thermoplastic elastomer refers to a thermoplastic elastomer selected from an olefin elastomer, a styrenic elastomer and the like.
As an olefin elastomer, for example, ethylene-propylene copolymer elastomer (EPR), ethylene-butene copolymer elastomer (EBR), ethylene-hexene copolymer elastomer (EHR), ethylene-octene copolymer elastomer (EOR) Etc.); ethylene • propylene • ethylidene norbornene copolymer, ethylene • propylene • butadiene copolymer, ethylene • propylene • isoprene copolymer, etc. For example, a former copolymer elastomer can be mentioned.
Also, as the styrene-based elastomer, for example, styrene-butadiene-styrene triblock copolymer elastomer (SBS), styrene-isoprene-styrene triblock copolymer elastomer (SIS), styrene-ethylene-butylene copolymer elastomer ( SEB), styrene-ethylene-propylene copolymer elastomer (SEP), styrene-ethylene-butylene-styrene copolymer elastomer (SEBS), styrene-ethylene-butylene-ethylene copolymer elastomer (SEBC), hydrogenated styrene Butadiene elastomer (HSBR), styrene-ethylene-propylene-styrene copolymer elastomer (SEPS), styrene-ethylene-ethylene-propylene-styrene copolymer elastomer (SEEPS , Styrene - butadiene butylene - styrene copolymer elastomer (SBBS) can be exemplified.
Furthermore, hydrogenated polymer-based elastomers such as ethylene-ethylene-butylene-ethylene copolymer elastomer (CEBC) can also be mentioned.
Among them, when at least one selected from the group consisting of ethylene / octene copolymer elastomer (EOR), ethylene / butene copolymer elastomer (EBR) and ethylene / propylene copolymer elastomer is used, a resin composition and a molded article thereof In the above, it is preferable from the viewpoint that the performances such as low shrinkage, touch and impact strength tend to be more excellent and the economy is also excellent.
In addition, 2 or more types of thermoplastic elastomers can also be used together.

The modified polyolefin is an acid-modified polyolefin and / or a hydroxy-modified polyolefin, and by improving the interfacial strength between the polypropylene resin (a) and the cellulose fiber (i), rigidity and impact of the resin composition and its molded body can be improved. It is effective to improve physical properties such as strength.
There is no restriction | limiting in particular as an acid modified polyolefin, A conventionally well-known thing can be used. The acid-modified polyolefin is, for example, polyethylene, polypropylene, ethylene-α-olefin copolymer, ethylene-α-olefin-non-conjugated diene compound copolymer (EPDM etc.), ethylene-aromatic monovinyl compound-conjugated diene compound copolymer rubber And polyolefins are graft-copolymerized and modified with an unsaturated carboxylic acid such as, for example, maleic acid or maleic anhydride. This graft copolymerization is carried out, for example, by reacting the above-mentioned polyolefin with an unsaturated carboxylic acid using a radical generator such as benzoyl peroxide in a suitable solvent. The components of the unsaturated carboxylic acid or its derivative can also be introduced into the polymer chain by random or block copolymerization with a monomer for polyolefin.
The hydroxy-modified polyolefin is a modified polyolefin containing a hydroxyl group. The modified polyolefin may have a hydroxyl group at an appropriate site, for example, at the end or side chain of the main chain. The olefin resin constituting the hydroxy-modified polyolefin is, for example, a homopolymer or copolymer of an α-olefin such as ethylene, propylene, butene, 4-methylpentene-1, hexene, octene, nonene, decene and dodecene, the above α -A copolymer of an olefin and a copolymerizable monomer can be exemplified. As hydroxy-modified polyolefin, hydroxy-modified polyethylene (for example, low density, medium density or high density polyethylene, linear low density polyethylene, ultra-high molecular weight polyethylene, ethylene- (meth) acrylate copolymer, ethylene-vinyl acetate copolymer Polymers, etc.), Hydroxy-modified polypropylene (eg, polypropylene homopolymer such as isotactic polypropylene, etc., random copolymer of propylene and α-olefin (eg, ethylene, butene, hexane etc.), propylene-α-olefin block co-polymer Polymers, etc.), hydroxy-modified poly (4-methylpentene-1), etc. can be mentioned.

Molecular weight depressants are effective in imparting and improving moldability (flowability) and the like.
As the molecular weight depressant, for example, various kinds of organic peroxides, and so-called decomposition (oxidation) accelerators can be used, and organic peroxides are preferable.
As the organic peroxide, for example, benzoyl peroxide, t-butyl perbenzoate, t-butyl peracetate, t-butyl peroxyisopropyl carbonate, 2,5-di-methyl-2,5-di- (benzoyl peroxy) Oxy) hexane, 2,5-di-methyl-2,5-di- (benzoylperoxy) hexyne-3, t-butyl-di-peradipate, t-butylperoxy-3,5,5-trimethylhexa Noate, methyl-ethyl ketone peroxide, cyclohexanone peroxide, di-t-butyl peroxide, dicumyl peroxide, 2,5-di-methyl-2,5-di- (t-butylperoxy) hexane 2,5-di-methyl-2,5-di- (t-butylperoxy) hexyne-3,1,3-bis- (t-b Ruperoxyisopropyl) benzene, t-butylcumyl peroxide, 1,1-bis- (t-butylperoxy) -3,3,5-trimethylcyclohexane, 1,1-bis- (t-butylperoxy) Cyclohexane, 2,2-bis-t-butylperoxybutane, p-menthane hydroperoxide, di-isopropylbenzene hydroperoxide, cumene hydroperoxide, t-butyl hydroperoxide, p-cymene hydroperoxide, 1 Or one or more selected from the group consisting of 1,1,3,3-tetra-methylbutyl hydroperoxide and 2,5-di-methyl-2,5-di- (hydroperoxy) hexane It can be mentioned.

The lubricant is effective for imparting and improving the releasability and the like at the time of molding of the resin composition and the molded article thereof.
Examples of the lubricant include fatty acid amides such as oleic acid amide, stearic acid amide, erucic acid amide and behenic acid amide, butyl stearate, silicone oil and the like.

Antioxidants are effective in preventing quality deterioration of the resin composition and the molded article thereof.
Examples of the antioxidant include phenol-based, phosphorus-based and sulfur-based antioxidants. As a neutralizing agent, higher fatty acid salts such as calcium stearate and zinc stearate can be exemplified. Examples of light stabilizers and ultraviolet light absorbers include hindered amines, benzotriazoles, benzophenones and the like.

  Examples of crystal nucleating agents include metal amides of aromatic carboxylic acids, metal salts of aromatic phosphates, sorbitol derivatives, metal salts of rosin, and amide nucleating agents. Among these crystal nucleating agents, aluminum p-t-butylbenzoate, phosphoric acid 2,2'-methylenebis (4,6-di-t-butylphenyl) sodium, phosphoric acid 2,2'-methylenebis (4) , 6-di-t-butylphenyl) aluminum, bis (2,4,8,10-tetra-tert-butyl-6-hydroxy-12H-dibenzo [d, g] [1,2,3] dioxaphospho A complex of aluminum (6-hydroxyl) hydroxide and an organic compound, p-methyl-benzylidene sorbitol, p-ethyl-benzylidene sorbitol, 1,2,3-trideoxy-4,6: 5,7-bis- [ Examples include (4-propylphenyl) methylene] -nonitol, sodium salts of rosin and the like.

  As an antistatic agent, fatty acid partial esters, such as glycerol fatty acid monoester, etc. can be illustrated. Examples of metal deactivators include triazines, phosphones, epoxies, triazoles, hydrazides, oxamides and the like.

  As the filler, various known fillers that can be used for polypropylene resins, such as inorganic fillers and organic fillers, can be blended. Examples of the inorganic filler include calcium carbonate, silica, hydrotalcite, zeolite, aluminum silicate, magnesium silicate, glass fiber, carbon fiber and the like. Further, as the organic filler, crosslinked rubber fine particles, thermosetting resin fine particles, thermosetting resin hollow fine particles, and the like can be exemplified.

In addition, the polypropylene resin composition of the present invention should contain a polyolefin resin other than the polypropylene resin (A), a thermoplastic resin such as a polyamide resin and a polyester resin, and the like within the range not significantly impairing the effects of the present invention. Can.
Various components of these optional components are commercially available from many companies, and depending on the purpose, desired products can be obtained and used.

Production of Polypropylene-Based Resin (A) The polypropylene-based resin (A) of the present invention may be produced by passing through a kneading step of adding optionally added components as required, compounding by a conventionally known method, and melt-kneading it can.

  The mixing is usually carried out using a mixing apparatus such as tumbler, V blender, ribbon blender, and the melt-kneading is usually carried out by a single screw extruder, twin screw extruder, Banbury mixer, roll mixer, Brabender plastograph, kneader, stirring The mixture is (semi) melted and granulated using a kneading machine such as a granulator and granulated. (Semi) Melt-kneading / granulation may be carried out by mixing the above-mentioned components at the same time, or by dividing and kneading each component to improve performance. You can also.

Production of Molded Product The injection-foamed resin molded product of the present invention can be obtained by injection foam molding of a polypropylene resin (A). For injection foam molding, known injection molding conditions and known injection molding apparatuses can be applied. For example, the step of injecting the melt of the resin composition into the cavity portion of the closed mold so that the volume of the cavity portion is smaller than the total volume of the melt of the resin composition; During and / or after the process, the mold is opened to the volume of the final molded product, and the mold is opened and injected by injection molding including the step of foaming with a gas generated by thermal decomposition of a chemical blowing agent, or a gas such as nitrogen or carbon dioxide A method (so-called core back method) or a short shot injection foam molding method (short shot method) can be used in which the resin volume is reduced by injecting the reduced resin into the mold with respect to the mold volume into which the resin is injected. . Among them, in physical foaming in which the appearance of silver streaks is significantly deteriorated, it is preferable to be formed by the short shot method.

Foaming Agent In the production of the foam molded article in the present invention, it is preferable to blend a foaming agent.
As the foaming agent, known foaming agents used for plastics, rubber and the like can be used without any problem. Conventional foaming agents such as physical foaming agents, chemical foaming agents (degradable foaming agents) and microcapsules containing thermal expansion agents can be used.

As physical blowing agents, for example, aliphatic hydrocarbons such as propane, butane, pentane and hexane, alicyclic hydrocarbons such as cyclopentane and cyclohexane, chlorodifluoromethane, difluoromethane, trifluoromethane, trichlorofluoromethane, dichlorodifluoromethane , Chloromethane, dichloromethane, chloroethane, dichlorotrifluoroethane, dichlorofluoroethane, chlorodifluoroethane, dichloropentafluoroethane, tetrafluoroethane, difluoroethane, pentafluoroethane, trifluoroethane, trichlorotrifluoroethane, dichlorotetrafluoroethane, chloro 1 type of halogenated hydrocarbon such as pentafluoroethane, perfluorocyclobutane, etc., water, carbon dioxide gas, inorganic gas such as nitrogen, etc. A combination of two or more thereof.
Among them, aliphatic hydrocarbons such as propane, butane and pentane and carbon dioxide gas are preferable because they are inexpensive and have high solubility in the polypropylene resin (a). Carbon dioxide is in a supercritical state at a relative pressure to atmospheric pressure of 7.4 MPa or more and 31 ° C. or more, and is in a state of being excellent in diffusion and solubility in a polypropylene resin.

  In obtaining a polypropylene-based foam with a physical blowing agent, a cell regulator can be used, if necessary. As a foam control agent, inorganic decomposable foaming agents such as ammonium carbonate, sodium bicarbonate, ammonium bicarbonate, ammonium nitrite, azo compounds such as azodicarbonamide, azobisisobutyronitrile and diazoaminobenzene, N, N'- Nitroso compounds such as dinitrosopentanemethylenetetramine and N, N'-dimethyl-N, N'-dinitrosoterephthalamide, benzenesulfonylhydrazide, p-toluenesulfonylhydrazide, p, p'-oxybisbenzenesulfonylsemicarbazide, p- Degradable foaming agents such as toluenesulfonyl semicarbazide, trihydrazino triazine, barium azodicarboxylate, inorganic powders such as talc and silica, acid salts such as polyvalent carboxylic acid, reaction of polyvalent carboxylic acid with sodium carbonate or sodium bicarbonate Mixtures etc. , It can also be used singly or in combination.

  When a polypropylene foam is obtained by using a chemical foaming agent (degradable foaming agent), as the chemical foaming agent (degradable foaming agent), for example, a mixture of sodium bicarbonate and an organic acid such as citric acid, azodicarbonamide, Azo-based foaming agents such as barium azodicarboxylate, nitroso-based foaming agents such as N, N'-dinitrosopentamethylenetetramine, N, N'-dimethyl-N, N'-dinitrosotephthalamide, p, p'- Sulfohydrazide-based foaming agents such as oxybisbenzenesulfonyl hydrazide and p-toluenesulfonyl semicarbazide, trihydrazino triazine and the like.

  The blending amount of the foaming agent varies depending on the expansion ratio of the final product and the kind of the foaming agent and the molding temperature at the time of molding, but 0.01 to 20 parts by weight, preferably 0 based on 100 parts by weight of the polypropylene resin (A) It is .05 to 15 parts by weight, and can be appropriately selected according to the desired foaming ratio.

Mixing of blowing agent The mixing of the polypropylene resin (A) and the blowing agent is carried out using a general mixing device such as a tumbler, V blender, ribbon blender, etc., and is introduced into the hopper of the injection molding machine. However, when using a physical blowing agent, it is necessary to use a system that is directly pressed into the cylinder of an injection molding machine.

Decoration molded body The injection foam molded body (target to be decorated) to be decorated in the present invention is an injection foam molded body made of a polypropylene resin composition, and is a non-polar resin, so it has poor adhesion. The decorative film in the invention includes the layer (I) made of a polypropylene resin (A) or the seal layer (II) made of a polypropylene resin (B) to make the decorative object made of a polypropylene resin and the addition target Since the decorative film covers the appearance defects such as silver streaks, flow marks and avatars generated on the surface to be decorated, the decorative film exhibits very high adhesive strength by adhering the decorative film, so Since the appearance is smooth, the appearance of the decorated formed body is improved.

  A decorative molded product obtained by sticking the decorative film of the present invention to various injection foam molded products formed in a three-dimensional shape made of polypropylene resin is lightweight, and has heat insulation, sound insulation, cushioning, energy absorption, etc. The surface appearance of molded products such as surface gloss and the touch are excellent, and VOCs contained in paints and adhesives are greatly reduced, so they are suitable as automobile members, home appliances, vehicles (such as railways), building materials, daily goods etc. It can be used for

  Fig.1 (a)-(c) is explanatory drawing which illustrates typically the cross section of embodiment of the decorating molded object by which the decorating film was stuck on the resin molding. In FIGS. 1 (a) to 1 (c), the arrangement of the layer (I) is specified and described for ease of understanding, but the layer configuration of the decorated molded body is interpreted as being limited to these examples. is not. In the present specification, reference numeral 1 in the drawings denotes a decorative film, reference numeral 2 denotes a layer (I), reference numeral 3 denotes a seal layer (II), reference numeral 4 denotes a surface decoration layer (III), and reference numeral 5 denotes an injection foam resin molding Indicates FIG. 1A is an example in which the decorative film is a single layer film, and a layer (I) made of a resin composition (A) is attached to the injection foam resin molded body 5. FIG.1 (b) and (c) are examples in which a decoration film consists of multilayer films. The decorative film of FIG. 1 (b) is composed of a layer (I) and a seal layer (II), and the seal layer (II) is adhered to the surface of the injection foam resin molded body 5, and the surface is on the layer (I). A decorative layer (III) is laminated. The decorative film of FIG. 1 (c) comprises a layer (I), a seal layer (II) and a surface decoration layer (III), and the seal layer (II) is adhered to the surface of the injection foam resin molded body 5, The layer (I) and the surface decoration layer (III) are laminated in this order on the seal layer (II).

A method for producing a decorative molded article according to the present invention comprises the steps of preparing the above-mentioned decorative film, and preparing an injection foamed resin molded article having an expansion ratio of 1.1 times to 10 times. Setting the resin molded body and the decorative film in a depressurizable chamber box (if the seal layer is provided, the resin molded body and the seal layer of the decorative film face each other) Step of depressurizing the inside of the chamber box, heating and softening the decorative film, pressing the decorative film against the injection foam resin molded body, and reducing the pressure of the depressurized chamber box to atmospheric pressure It is characterized by including the step of returning or pressurizing.

  In three-dimensional decoration thermoforming, the decoration target and the decoration film are set in a depressurizable chamber box, the film is heated and softened in a state where the pressure in the chamber box is reduced, and the film is pressed against the decoration target It has a basic process of sticking a decoration film on the surface of decoration object by returning the inside of a chamber box to atmospheric pressure, or pressurizing, and pastes a film under pressure reduction. This makes it possible to obtain a beautifully decorated molded body free of air stagnation. In the manufacturing method of the present invention, any known device can be used as long as it is an apparatus and conditions suitable for three-dimensional decorative thermoforming.

That is, the chamber box may contain all of the object to be decorated, the decoration film, the mechanism for pressing it, the device for heating the decoration film, etc. It may be a plurality of divided ones.
The mechanism for pressing the decoration target and the decoration film may be any type that moves the decoration target, moves the decoration film, or moves both.

More specific representative forming methods will be exemplified below.
Hereinafter, the method of sticking a decoration film on a decoration object using a three-dimensional decoration thermoforming machine is demonstrated illustratively, referring a figure.

  As shown in FIG. 2, the three-dimensional decorative thermoforming machine of this embodiment comprises chamber boxes 11 and 12 at the top and bottom, and performs thermoforming of the decorative film 1 in the two chamber boxes 11 and 12. It is like that. A vacuum circuit (not shown) and an air circuit (not shown) are connected to the upper and lower chamber boxes 11 and 12, respectively.

  Further, a jig 13 for fixing the decorative film 1 is provided between the upper and lower chamber boxes 11 and 12. Further, a table 14 capable of being raised and lowered is installed in the lower chamber box 12, and the injection-foamed resin molded product (target for decoration) 5 is placed on this table 14 (via a jig or the like or directly). Is set. A heater 15 is incorporated in the upper chamber box 11, and the decorative film 1 is heated by the heater 15. The object to be decorated 5 can have an injection-foaming molded body made of a polypropylene resin composition as a base.

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

  As shown in FIG. 3, first, with the upper and lower chamber boxes 11 and 12 opened, the object to be decorated 5 is placed on the table 14 in the lower chamber box 12 and the table 14 is lowered. Subsequently, when the decorative film 1 is provided on the film fixing jig 13 between the upper and lower chamber boxes 11 and 12 and the seal layer (II) is present, the seal layer (II) is set to face the substrate.

  As shown in FIG. 4, the upper chamber box 11 is lowered, the upper and lower chamber boxes 11 and 12 are joined, and the inside of the box is closed, and then the insides of the respective chamber boxes 11 and 12 are vacuum suctioned. Heating of the decorative film 1 is performed.

After the decorative film 1 is heated and softened, as shown in FIG. 5, the table 14 in the lower chamber box 12 is raised with the interior of the upper and lower chamber boxes 11 and 12 kept in the vacuum suction state. The decorative film 1 is pressed against the object to be decorated 5 to cover the object to be decorated 5. Further, as shown in FIG. 6, the upper chamber box 11 is opened at atmospheric pressure or compressed air is supplied from a pressurized air tank, thereby bringing the decorative film 1 into close contact with the object 5 to be decorated with a greater force.
Subsequently, the insides of the upper and lower chamber boxes 11 and 12 are opened to atmospheric pressure, and the decorated formed body 6 is taken out from the lower chamber box 12. Finally, as illustrated in FIG. 7, the edges of the unnecessary decorative film 1 around the decorative formed body 6 are trimmed.

Molding conditions The reduced pressure in the chamber boxes 11 and 12 may be such that no air stagnation occurs, and the pressure in the chamber box is 10 KPa or less, preferably 3 KPa, and more preferably 1 KPa or less.

Moreover, in the two chamber boxes 11 and 12 divided up and down by the decoration film 1, the pressure in the chamber box on the side to which the decoration object 5 and the decoration film 1 are attached may be in this range, The drawdown of the decorative film 1 can also be suppressed by changing the pressure of the chamber boxes 11, 12.
At this time, a film made of a general polypropylene-based resin may be largely deformed and ruptured by a slight pressure fluctuation due to a decrease in viscosity at the time of heating.
The decorative film 1 of the present invention is not only difficult to draw down, but also resistant to film deformation due to pressure fluctuation.

  The heating of the decorative film 1 is controlled by the heater temperature (output) and the heating time. In addition, 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 standard of appropriate conditions.

In the present invention, in order to attach the polypropylene-based decorative film 1 to the decorative object 5 made of a polypropylene-based resin, it is necessary that the surface of the resin molded body 5 and the decorative film 1 be sufficiently softened or melted.
Therefore, it is necessary that the heater temperature is higher than the melting temperature of the polypropylene-based resin constituting the object to be decorated 5 and the polypropylene-based resin constituting the decorative film 1. The heater temperature is preferably 160 ° C. or more, more preferably 180 ° C. or more, and most preferably 200 ° C. or more.

  The higher the heater temperature, the shorter the time required for heating, but the heater side is sufficient to heat the interior of the decorative film 1 (or the surface opposite to the heater if the heater is installed on only one side). Since the resin is thermally deteriorated as well as the moldability is deteriorated due to the temperature of the resin becoming too high, the heater temperature is preferably 500.degree. C. or less, more preferably 450.degree. C. or less, most preferably 400.degree. It is below.

Although the appropriate heating time varies depending on the heater temperature, it is preferable to heat at least the polypropylene-based decorative film until heating starts and retension called springback starts.
That is, the decorative film heated by the heater is thermally expanded by being heated from the solid state, and once stretched along with crystal melting, the spring back temporarily recoils by relaxation of the molecules as the crystal melting progresses to the whole. Is observed and then hangs down under its own weight, but after springback, the film is completely melted in crystals, and sufficient adhesion strength is obtained because molecular relaxation is sufficient.
On the other hand, if the heating time is too long, the film sags due to its own weight or deforms due to the pressure difference between the upper and lower chamber boxes. Therefore, the heating time is preferably less than 120 seconds after the end of spring back.

  It is preferable to supply compressed air when the decorative film is brought into close contact with the substrate, in the case of decorating a molded article having a complicated shape having asperities or when achieving higher adhesion. The pressure in the upper chamber box when compressed air is introduced is 150 kPa or more, preferably 200 kPa or more, and more preferably 250 kPa or more. The upper limit is not particularly limited, but if the pressure is too high, there is a risk of damaging the device, so 450 kPa or less, preferably 400 kPa or less is good.

Hereinafter, the present invention will be more specifically described by way of 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, it was measured at 230 ° C. under a 2.16 kg load. The unit is g / 10 minutes.

(Ii) melting peak temperature Tm:
Using a differential scanning calorimeter (DSC), raise the temperature to 200 ° C and hold for 10 minutes, and then drop the temperature to 40 ° C at a temperature drop rate of 10 ° C / min, and again at a temperature rise rate of 10 ° C / min The temperature of the endothermic peak top at the time of measurement was taken as the melting peak temperature Tm. The unit is ° C.

(Iii) GPC measurement GPC measurement was performed under the following apparatus and conditions to calculate Mw / Mn.
Equipment: GPC (ALC / GPC 150C) manufactured by Waters
Detector: FOXBORO MIRAN 1A IR detector (measurement wavelength: 3.42 μm)
・ Column: Showa Denko AD 806 M / S (3)
Mobile phase solvent: ortho-dichlorobenzene (ODCB)
・ Measurement temperature: 140 ° C
・ Flow rate: 1.0 ml / min
Injection volume: 0.2 ml
Preparation of sample: The sample is prepared by dissolving 1 mg / mL solution using ODCB (containing 0.5 mg / mL BHT) at 140 ° C. for about 1 hour.
The conversion from the retention volume to the molecular weight obtained by the GPC measurement is performed using a calibration curve with standard polystyrene (PS) prepared in advance. The standard polystyrenes used are all of the following brands manufactured by Tosoh Corporation.
F380, F288, F128, F80, F40, F20, F10, F4, F1, A5000, A2500, A1000
A calibration curve is generated by injecting 0.2 mL of a solution of ODCB (containing 0.5 mg / mL BHT) to 0.5 mg / mL each. The calibration curve uses a cubic equation obtained by approximation using the least squares method.
In addition, the following numerical values are used for the viscosity formula [η] = K × Mα used for conversion to molecular weight.
PS: K = 1.38 × 10 ⁻⁴ , α = 0.7
PP: K = 1.03 × 10 ⁻⁴ , α = 0.78

2. Materials Used (1) Polypropylene Based Resin The following polypropylene based resin was used.
(A-1): Nippon Polypro Co., Ltd., Novatec (registered trademark) EA 9 (a propylene homopolymer with a Ziegler-Natta catalyst, MFR = 0.4 g / 10 min, Tm = 161 ° C.) 96 wt%, Polypropylene resin composition obtained by blending 4% by weight of black pigment MB (EPP-K-120601 manufactured by Polycol Kogyo Co., Ltd.), MFR = 0.4 g / 10 min, Tm = 161 ° C.
(A-2): Nippon Polypro Co., Ltd., Novatec (registered trademark) EA 6 A (a propylene homopolymer (MFR = 1.9 g / 10 min, Tm = 161 ° C.) with a Ziegler-Natta catalyst) to 96 wt% Polypropylene resin composition obtained by blending 4% by weight of black pigment MB (EPP-K-120601, manufactured by Polycol Kogyo Co., Ltd.), MFR = 1.9 g / 10 min, Tm = 161 ° C.
(A-3): Nippon Polypro Co., Ltd., Novatec (registered trademark) FY6 (a propylene homopolymer with a Ziegler-Natta catalyst, MFR = 2.4 g / 10 min, Tm = 161 ° C) 96 wt%, Polypropylene resin composition obtained by blending 4% by weight of black pigment MB (EPP-K-120601 manufactured by Polycole Kogyo Co., Ltd.), MFR = 2.4 g / 10 min, Tm = 161 ° C.

(B-1): Propylene homopolymer with a Ziegler-Natta catalyst (MFR = 5 g / 10 min, Tm = 160 ° C.), manufactured by Nippon Polypro Co., Ltd., trade name "Novatec (registered trademark) FY4"
(B-2): Propylene homopolymer with a Ziegler-Natta catalyst (MFR = 25 g / 10 min, Tm = 159 ° C.), manufactured by Nippon Polypro Co., Ltd., trade name “Novatec (registered trademark) SA1”
(B-3): Propylene-α-olefin copolymer catalyzed by Ziegler-Natta catalyst (MFR = 7 g / 10 min, Tm = 146 ° C.), manufactured by Nippon Polypro Co., Ltd., trade name “Novatec (registered trademark) FW3 GT "
(B-4): Propylene-α-olefin copolymer (MFR = 7 g / 10 min, Tm = 138 ° C.) by Ziegler-Natta catalyst, manufactured by Nippon Polypropylene Corp., trade name “Novatec® FW4B” "
(B-5): Propylene-α-olefin copolymer (MFR = 6 g / 10 min, Tm = 131 ° C.) by Ziegler-Natta catalyst, manufactured by Nippon Polypropylene Corporation, trade name “Novatec® FX4E” "
(B-6): Propylene-α-olefin copolymer (MFR = 5 g / 10 min, Tm = 127 ° C.) by Ziegler-Natta catalyst, manufactured by Nippon Polypropylene Corporation, trade name “Novatec (registered trademark) FX 4 G "

(D-1): Propylene homopolymer with a Ziegler-Natta catalyst (MFR = 10 g / 10 min, Tm = 161 ° C.), manufactured by Nippon Polypro Co., Ltd., trade name "Novatec (registered trademark) FA3KM"
(D-2): Polypropylene resin obtained by blending 0.4 parts by weight of nucleating agent (Milliken Japan Ltd., trade name “Millad NX 8000 J”) with 100 parts by weight of polypropylene resin (D-1) Composition (MFR = 10 g / 10 min, Tm = 164 ° C.)
(D-3): Propylene-α-olefin copolymer catalyzed by metallocene catalyst (MFR = 7 g / 10 min, Tm = 125 ° C., Mw / Mn = 2.5), manufactured by Nippon Polypro Co., Ltd., trade name “ Wintech (registered trademark) WFX4M "
(D-4): A polypropylene resin composition in which 0.4 parts by weight of a nucleating agent (Milliken Japan Co., Ltd., trade name "Millad NX 8000 J") is blended with 100 parts by weight of a polypropylene resin (D-3). (MFR = 7 g / 10 min, Tm = 127 ° C.)
(D-5): Polypropylene resin composition (MFR = 10 g / 10) obtained by blending 4% by weight of a silver pigment MB (manufactured by Toyo Color Co., Ltd. PPCM 913Y-42 SILVER 21X) with 96% by weight of a polypropylene resin (D-1) Min, Tm = 161 ° C)

(A-1): Propylene homopolymer (MFR = 40 g / 10 min, Tm = 158 ° C.) with a Ziegler-Natta catalyst, manufactured by Nippon Polypro Co., Ltd., trade name "Novatec (registered trademark) MA04A"
(A-2): The grade of the following composition of Nippon Polypro Co., Ltd. make, brand name "Novatec (registered trademark)" was used.
Propylene-ethylene block copolymer polymerized with Ziegler-Natta catalyst, melting peak temperature Tm of the whole propylene-ethylene block copolymer is 161 ° C, MFR (230 ° C, 2.16 kg load) is 28 g / 10 minutes, the content of the propylene homopolymer portion with respect to the whole propylene / ethylene copolymer is 73% by weight, the content of the propylene / ethylene copolymer portion is 27% by weight, and the ethylene content of the propylene / ethylene copolymer portion Is 37% by weight.
(A-3) Polypropylene resin (A-2) 60% by weight, MFR = 1.0 EBR (Mitsui Chemical Co., Ltd. Tafmar (registered trademark) A0550S) 20% by weight, inorganic filler (Nippon Talc Polypropylene resin composition (A-4) obtained by blending 20% by weight of Talc P-6 manufactured by Co., Ltd. and having an average particle diameter of 4.0 μm (A-4): Glass fiber (80% by mass of polypropylene resin (A-1) Glass fiber made by Nippon Electric Glass Co., Ltd. "T480H", chopped strand, fiber diameter 7 μm, fiber length 6 mm) 20 mass% blended polypropylene resin composition

(2) Foaming agent Chemical foaming agent master batch (manufactured by Eiwa Chemical Co., Ltd., Polislene EE25C, foaming agent concentration 20%, generated gas amount 75 to 90 ml / 2.5 g (at 220 ° C. under constant temperature, 20 minutes)), sodium bicarbonate Citric acid based, low density polyethylene based

3. Production of Resin Molded Body (Substrate) (Production of Resin Molded Body (Substrate) (A-1))
(1) Production of Injection Foam Molded Product Using a polypropylene resin (A-1), mold opening injection foam molding was performed by the following method to obtain an injection foamed resin molded product (base) (A-1).
“Α-300” manufactured by FANUC as an injection molding machine, and a molded product part for molding a foam molded product as an injection molding die, a flat plate shape having dimensions of width × height = 400 mm × 200 mm and variable thickness Foam molding was carried out by the method described below using one having a mold cavity and a clearance (T0) of 2.0 mm this time.
In the melting step (A), 3 parts by weight of a chemical foaming agent masterbatch, 100 parts by weight of a polypropylene resin (A-1), and a black pigment MB (EPP-K-120601 manufactured by Polycole Kogyo Co., Ltd.) Four parts by weight were added and melted by setting the cylinder temperature to 200 ° C.
The mold used in the injection process (B) is composed of a fixed mold and a movable mold capable of advancing and retracting, and the initial mold cavity clearance (T0) is 2 mm, which is obtained from the melting process (A) The molten or semi-molten polypropylene-based resin composition (temperature is 200 ° C. of the cylinder temperature of the melting step (A)) was injected and filled into the mold cavity. The filling time was 1.0 to 1.5 seconds.
After filling in the injection process (B), after 1 ± 0.5 seconds, the mold cavity clearance (T1) corresponding to the shape position of the foam molded body that can obtain a movable mold in the foaming process (C) up to 4 mm I made it back. Thereafter, the product filled with the cavity of the mold cavity was cooled and solidified (die cavity set temperature 40 ° C., cooling set time 20 seconds) by the expansion pressure by the foaming agent.
The obtained foam molded article was maintained in a constant temperature and humidity chamber with a temperature of 23 ° C. and a humidity of 50% for 5 days.

(2) Production of unfoamed molded product In the production of the injection foamed molded product of (1), the product is cooled and solidified with a mold cavity set temperature of 40 ° C. and a cooling set time of 20 seconds without performing the foaming step (C). I did.
The obtained unfoamed molded article was maintained in a constant temperature and humidity room with a temperature of 23 ° C. and a humidity of 50% for 5 days.

(3) Production of Resin Molded Body (Substrate) By using the diamond saw, the injection foam molded body obtained in the production of the injection foam molded body of (1) is cut into a width × height = 120 mm × 120 mm to obtain a resin. A molded body (substrate) was obtained.

・ Physical property evaluation (1) Measurement of density Cut out the central part of the injection foam molded product and the unfoamed molded product in width x height = 5 cm x 2 cm, and use an alpha mirage hydrometer MD-300S (a hydrometer using Archimedes' principle) The medium was water, and the weights in air and water were measured, respectively, and the volumes of both compacts were determined from both to calculate the density (automatic calculation).
(2) Measurement of Thickness The central portions of the injection-foamed molded article and the unfoamed molded article were cut into width × height = 2 cm × 2 cm, and the thickness was measured using a Mitutoyo Micrometer.
(3) Measurement of foaming ratio (3-1) Evaluation of foaming ratio using thickness Foaming ratio (thickness) was defined by equation (1).
Foaming ratio (thickness) = thickness of injection-foamed molded body ÷ thickness of unfoamed molded body ··· (formula 1)
(3-2) Evaluation of foaming ratio using density The foaming ratio (density) was defined by Formula (2).
Foaming ratio (density) = density of unfoamed molded body 密度 density of injection molded foam ··· (Equation 2)
In injection foam molding, even if the foaming magnification (thickness) according to the evaluation method of (3-1) is a molded product having the same value, the resin temperature at the time of injection foam molding, mold temperature, injection speed, etc. Since the thickness of the non-foamed layer (skin layer) formed on both surface sides of the molded body may fluctuate, the value may be different from the foaming ratio (density). In the present invention, as the expansion ratio, the expansion ratio (thickness) is used.
The evaluation results of the physical properties of the obtained resin molded product and the like are shown in Table 1. In addition, the thickness of the injection foam molded body matches the cavity clearance (T1) in the foaming step (C), and the thickness of the non-foamed molded body matches the cavity clearance (T0) in the injection step (B) The

(Production of Resin Molded Body (Substrate) (A-2) to (A-4))
Injection-foaming molded articles, unfoamed molded articles, resin molded articles (substrates) using the polypropylene resins (a-2) to (a-4) in the same manner as in the production of the resin molded article (base) (a-1) Got).
The evaluation results of the physical properties of the obtained resin molded product and the like are shown in Table 1.

Example 1
Production of Decorative Film A T-die with a lip opening of 0.8 mm and a die width of 400 mm, to which an extruder 1 with a diameter of 40 mm (diameter) was connected, was used. The polypropylene resin (A-1) was put into the extruder 1, and melt extrusion was performed under the conditions of a resin temperature of 240 ° C. and a discharge amount of 12 kg / h. The melt-extruded film was cooled and solidified while pressed against a first roll rotating at 80 ° C. at 3 m / min with an air knife to obtain a 150 μm-thick single-layer unstretched film.

Three-Dimensional Decoration Thermoforming As the resin molded body (base) 5, an injection foam molded body made of the polypropylene resin composition (A-1) obtained above was used. As a three-dimensional decorative thermoforming apparatus, "NGF-0406-SW" manufactured by NUSHIYAKU Vacuum Co., Ltd. was used. As shown in FIGS. 2 to 7, the decorative film 1 is cut out with a width of 250 mm and a length of 350 mm so that the cooling roll contact surface faces the substrate and the longitudinal direction is the MD direction of the film, and the size of the opening Were set in a 210 mm × 300 mm film fixing jig 13. The resin molded body (base) 5 is mounted on a table 20 mm high mounted on a table 14 located below the film fixing jig 13 and is manufactured by Nichiban Co., Ltd. “Nystack NW-K15”. "Pasted through". The film fixing jig 13 and the table 14 were placed in the chambers 11 and 12, and the chambers were closed to seal the inside of the chamber boxes 11 and 12. The chamber box is divided up and down via the decorative film 1. Under the condition that the upper and lower boxes are vacuum suctioned and the pressure is reduced from atmospheric pressure (101.3 kPa) to 1.0 kPa, the far infrared heater 15 installed on the upper chamber box 11 is started with an output of 80% and the decorative film 1 is Heated. During heating, vacuum suction was continued, and the pressure was finally reduced to 0.1 kPa. The decorative film 1 is heated and temporarily slackened, and then, 20 seconds after the tension-back phenomenon is finished, the table 14 installed in the lower chamber box 12 is moved upward, and the resin molded body (Substrate) 5 was pressed against the decorative film 1 and compressed air was sent immediately so that the pressure in the upper chamber box 11 became 270 kPa, to bring the resin molded body (substrate) 5 and the decorative film 1 into close contact. Thus, a three-dimensional decorative thermoformed article 6 having the decorative film 1 attached to the upper surface and the side surface of the resin molded body (base) 5 was obtained.

-Physical property evaluation (1) Evaluation of thermoforming property The drawdown state of the decoration film at the time of three-dimensional decoration thermoforming, and the adhesion state of the decoration film of the decoration molding which stuck the decoration film on the substrate It observed visually and evaluated by the criteria shown below.
Good: At the time of three-dimensional decorative thermoforming, since the contact between the base and the decorative film was simultaneously made on the entire contact surface without drawdown of the decorative film, contact unevenness does not occur, and adhesion is uniformly performed. ing.
×: At the time of three-dimensional decorative thermoforming, since the decorative film was drawn down largely, contact unevenness occurs on the entire surface of the substrate.

(2) Adhesive force between resin molded body (substrate) and decorative film "Kraft adhesive tape No. 712 N" manufactured by NITOMS CORPORATION is cut out to 75 mm in width and 120 mm in length, and from the end of the resin molded body (substrate) It was stuck to a resin molding (substrate) in the range of 75 mm × 120 mm and subjected to masking treatment (substrate surface exposed portion is 45 mm wide and 120 mm long). It installed in three-dimensional decoration thermoforming apparatus NGF-0406-SW so that the masking surface of a resin molding (substrate) might contact with a decoration film, and performed three-dimensional decoration thermoforming.

  The decorative film surface of the resulting decorative molded body was cut to a substrate surface with a width of 10 mm in a direction perpendicular to the longitudinal direction of the pressure-sensitive adhesive tape, using a cutter, to prepare a test piece. In the obtained test piece, the adhesion surface of the base and the decoration film is 10 mm wide × 45 mm long. Attach to a tensile tester so that the base part of the test piece and the decorative film part become 180 °, measure the 180 ° peel strength of the adhesive surface at a tensile speed of 200 mm / min, and measure the maximum strength at peeling or breaking. The (N / 10 mm) was measured five times, and the average strength was taken as the adhesive strength.

(3) Appearance of the decorated molded body The appearance of the decorated film of the decorated molded body in which the decorative film was attached to the substrate was visually observed and evaluated according to the criteria shown below.
○: Silver streaks, surface roughness, and appearance defects caused by unevenness of fiber shape are not observed, and the appearance is smooth.
X: Appearance defects due to silver streaks, surface roughness, and irregularities of fiber shape are observed, and the appearance is not suitable for practical use.

(4) Gloss The gloss (gloss) around the center of the decorative molded product to which the decorative film was attached was measured at an incident angle of 60 ° using a GLOSS meter Gloss Meter VG 2000 manufactured by Nippon Denshoku Kogyo Co., Ltd. . The measuring method conformed to JIS K7105-1981.

Table 2 shows the evaluation results of the physical properties of the obtained decorative molded product and the like.
Since all of the requirements of the present invention are satisfied, the resulting decorated molded body is excellent in thermoforming and adhesion, and the surface of the molded body is covered with the decorative film, so that the appearance due to silver streaks or surface roughness is obtained. No defects were observed, and the appearance was excellent.

(Examples 2 to 4)
In the three-dimensional decorative thermoforming described in Example 1, the evaluation is performed in the same manner as in Example 1 except that the resin molded body (base) 5 is changed to polypropylene resins (a-2) to (a-4). The The evaluation results are shown in Table 2, respectively.
All of the above satisfy all the requirements of the present invention, so the resulting decorated molded article is excellent in thermoformability and adhesion, and the surface of the molded article is covered with the decorated film, so silver streaks and surface roughness, The appearance defect due to the unevenness of the fiber shape was not observed, and the appearance was excellent.

(Example 5)
In the production of the decorative film of Example 1, an extruder 1 with a diameter of 40 mm (diameter) and an extruder 2 with a diameter of 30 mm (diameter) were connected, lip opening 0.8 mm, die width A 400 mm two-kind two-layer T-die was used. The polypropylene resin (A-1) is put into the extruder 1, and the polypropylene resin (D-1) is put into the surface layer extruder 2, and the discharge temperature of the extruder 1 is 12 kg and the resin temperature is 240 ° C. Melt-extrusion was carried out under the conditions of 4 kg / h for the discharge amount of 1 / h and the extruder for surface layer-2.
The melt-extruded film is cooled and solidified so that a layer composed of a polypropylene resin (A-1) is in contact with a cooling roll rotating at 80 ° C. and 3 m / min, and a 150 μm thick layer and 50 μm thick An unstretched film of two layers in which a surface decoration layer was laminated was obtained.
Except using the unstretched film obtained in the above-mentioned decorative film production and changing the resin molding (base) 5 to a fiber-reinforced polypropylene resin composition (A-3) in three-dimensional decorative thermoforming, The molding and evaluation were performed in the same manner as in Example 1. The evaluation results are shown in Table 3.
All of the above satisfy all the requirements of the present invention, so the resulting decorated molded article is excellent in thermoforming property and adhesion, and the surface of the molded article is covered with the decorated film, so silver streaks and surface roughness are caused. The appearance defect of was not observed and the appearance was excellent. Moreover, it was a result which is excellent in glossiness by having laminated | stacked polypropylene resin (D-1) on the outermost surface side as surface decoration layer (III) [layer (III)].

(Example 6)
In the production of the decorative film of Example 1, a lip opening 0.8 mm, die width connected with an extruder 1 with a diameter of 40 mm (diameter) and an extruder 3 with a diameter of 30 mm (diameter) A 400 mm two-kind two-layer T-die was used. The polypropylene-based resin (A-1) is put into the extruder 1, and the polypropylene-based resin (B-1) is put into the seal layer extruder 3, and the discharge temperature of the extruder 1 is 12 kg. Melt-extrusion was carried out under the conditions of 4 kg / h for the discharge amount of / h and the extruder for sealing layer-3.
The melt-extruded film was cooled and solidified so that the seal layer was in contact with a cooling roll rotating at 80 ° C. and 3 m / min, and a 150 μm thick layer and a 50 μm thick surface decoration layer were laminated. An unstretched film of 2 layers was obtained.
Using the unstretched film obtained in the above-mentioned decorative film production, in three-dimensional decorative thermoforming, except that the resin molded body (substrate) 5 is changed to a polypropylene resin (A-3), Example 1 and It molded similarly and evaluated. The evaluation results are shown in Table 3.
All of them satisfy all the requirements of the present invention, so the obtained decorative molded article is excellent in thermoforming property and adhesion, appearance defects due to silver streaks and surface roughening are not observed, and the appearance is excellent. there were.

(Examples 7 to 11)
In the production of the decorative film of Example 6, molding was performed in the same manner as in Example 6, except that the polypropylene resin (B-1) was changed to polypropylene resins (B-2) to (B-6), I made an evaluation. The evaluation results are shown in Table 3.
All of the above satisfy all the requirements of the present invention, so the resulting decorated molded article is excellent in thermoforming property and adhesion, and the surface of the molded article is covered with the decorated film, so silver streaks and surface roughness are caused. The appearance defect of was not observed and the appearance was excellent.

(Example 12)
Molding and evaluation were performed in the same manner as in Example 11 except that in the production of the decorative film of Example 11, the polypropylene resin (A-1) was changed to the polypropylene resin (A-2). The evaluation results are shown in Table 3.
All of the above satisfy all the requirements of the present invention, so the resulting decorated molded article is excellent in thermoforming property and adhesion, and the surface of the molded article is covered with the decorated film, so silver streaks and surface roughness are caused. The appearance defect of was not observed and the appearance was excellent.

(Example 13)
In the production of the decorative film of Example 1, an extruder with a diameter of 40 mm (diameter), an extruder with a diameter of 30 mm (diameter) for a surface layer, and an extruder with a diameter of 30 mm (diameter)-3 A three-kind three-layer T-die with a lip opening of 0.8 mm and a die width of 400 mm was used. The polypropylene-based resin (A-1) is used for the extruder 1, the polypropylene-based resin (D-1) for the surface layer extruder 2, and the polypropylene-based resin (B-6) for the seal layer extruder 3. Each is charged, resin temperature is 240 ° C., discharge amount of extruder 1 is 12 kg / h, discharge amount of surface layer extruder 2 is 4 kg / h, discharge amount of seal layer extruder 3 is 4 kg / h The melt extrusion was performed under the following conditions.
The melt-extruded film is cooled and solidified so that the seal layer is in contact with a cooling roll rotating at 80 ° C. and 3 m / min, and a 150 μm thick layer, a 50 μm thick surface decoration layer, and 50 μm thick A three-layer unstretched film in which the seal layer of the above was laminated was obtained.
Using the unstretched film obtained in the above-mentioned decorative film production, in three-dimensional decorative thermoforming, except that the resin molded body (substrate) 5 is changed to a polypropylene resin (A-3), Example 1 and It molded similarly and evaluated. The evaluation results are shown in Table 4.
All of the above satisfy all the requirements of the present invention, so the resulting decorated molded article is excellent in thermoforming property and adhesion, and the surface of the molded article is covered with the decorated film, so silver streaks and surface roughness are caused. The appearance defect of was not observed and the appearance was excellent. Moreover, it was a result which is excellent in glossiness by having laminated | stacked polypropylene resin (D-1) on the outermost surface side as surface decoration layer (III) [layer (III)].

(Example 14)
In the production of the decorative film of Example 13, molding and evaluation were performed in the same manner as in Example 13 except that the polypropylene resin (D-1) was changed to the polypropylene resin (D-2). The evaluation results are shown in Table 4.
All of the above satisfy all the requirements of the present invention, so the resulting decorated molded article is excellent in thermoforming property and adhesion, and the surface of the molded article is covered with the decorated film, so silver streaks and surface roughness are caused. The appearance defect of was not observed and the appearance was excellent. Moreover, it was a result excellent in glossiness by having laminated | stacked the polypropylene resin (D-2) to which the nucleating agent was added on the outermost surface side as surface decoration layer (III) [layer (III)].

(Example 15)
In the production of the decorative film of Example 13, molding and evaluation were performed in the same manner as in Example 13 except that the polypropylene resin (D-1) was changed to a polypropylene resin (D-3). The evaluation results are shown in Table 4.
All of the above satisfy all the requirements of the present invention, so the resulting decorated molded article is excellent in thermoforming property and adhesion, and the surface of the molded article is covered with the decorated film, so silver streaks and surface roughness are caused. The appearance defect of was not observed and the appearance was excellent. Moreover, it was a result which is excellent in glossiness by having laminated | stacked polypropylene resin (D-3) on the outermost surface side as surface decoration layer (III) [layer (III)].

(Example 16)
In the production of the decorative film of Example 13, molding and evaluation were performed in the same manner as in Example 13 except that the polypropylene resin (D-1) was changed to a polypropylene resin (D-4). The evaluation results are shown in Table 4.
All of the above satisfy all the requirements of the present invention, so the resulting decorated molded article is excellent in thermoforming property and adhesion, and the surface of the molded article is covered with the decorated film, so silver streaks and surface roughness are caused. The appearance defect of was not observed and the appearance was excellent. Moreover, it was a result which is excellent in glossiness by having laminated | stacked the polypropylene resin (D-4) to which the nucleating agent was added on the outermost surface side as surface decoration layer (III) [layer (III)].

(Example 17)
In the production of the decorative film of Example 13, molding and evaluation were performed in the same manner as in Example 13 except that the polypropylene resin (D-1) was changed to a polypropylene resin (D-5). The evaluation results are shown in Table 4.
All of the above satisfy all the requirements of the present invention, so the resulting decorated molded article is excellent in thermoforming property and adhesion, and the surface of the molded article is covered with the decorated film, so silver streaks and surface roughness are caused. The appearance defect of was not observed and the appearance was excellent. In addition, since the layer (I) was colored in black and the surface decoration layer (III) [layer (III)] was colored in silver, it became a metal-like film, and the appearance was excellent.

(Comparative example 1)
Evaluation was performed using only the injection-foaming molded object which consists of polypropylene resin (A-1). The results are shown in Table 5.
Since the decorative film was not attached, silver streaks and surface roughness were noticeable, and the surface shape was not practical.

(Comparative examples 2 to 4)
The evaluation was performed in the same manner as Comparative Example 1 except that the injection-foamed molded article was changed from the polypropylene resin (A-1) to an injection-foamed molded article consisting of (A-2) to (A-4). The results are shown in Table 5.
Since no decorative film was attached to any of the injection foam moldings, appearance defects due to silver streaks, surface roughness, and unevenness of fiber shape were observed, and the surface shape was not practical.

(Comparative example 5)
An unstretched film was obtained in the same manner as in Example 1 except that in the production of the decorative film of Example 1, the polypropylene resin (A-1) was changed to the polypropylene resin (A-3).
Except using the unstretched film obtained in the above-mentioned decorative film production and changing the resin molding (base) 5 to a fiber-reinforced polypropylene resin composition (A-3) in three-dimensional decorative thermoforming, The molding and evaluation were performed in the same manner as in Example 1. The evaluation results are shown in Table 5.
Since the polypropylene resin (A-3) has a high MFR of 2.4 g / 10 min, it is inferior to the stability of thermoforming, and the decoration film is largely drawn down at the time of three-dimensional decoration thermoforming. It was generated and the result of the appearance of the decorated molding was extremely poor.

1 Decorative film 2 layers (I)
3 Seal layer (II)
4 surface decoration layer (III)
5 Resin moldings (deterioration target, substrate)
6 Decoration molding 11 upper chamber box 12 lower chamber box 13 jig 14 table 15 heater

Claims (6)

It is a decorative molded body in which a polypropylene-based decorative film is stuck by thermoforming on an injection-foamed resin molded body, and the polypropylene-based decorative film includes a layer (I) made of a polypropylene-based resin (A) The polypropylene-based resin (A) has a MFR (230 ° C., 2.16 kg load) of 2 g / 10 min or less, and the injection-foamed resin molded article satisfies the following requirements (i) to (ii) It is a resin molding containing a resin (A) and having an expansion ratio of 1.1 times or more and 10 times or less.
(I): The melting peak temperature Tm is 110 ° C. or more.
(Ii): MFR (230 ° C., 2.16 kg load) is not less than 0.01 g / 10 minutes and not more than 300 g / 10 minutes. It is a decorative molded body in which a polypropylene-based decorative film is stuck by thermoforming on an injection-foamed resin molded body, and the polypropylene-based decorative film is a layer (I) comprising polypropylene-based resin (A) and polypropylene The polypropylene-based resin (A) includes a seal layer (II) made of a resin-based resin (B), and the polypropylene-based resin (B) has a MFR (230 ° C., 2.16 kg load) of 2 g / 10 minutes or less. MFR (230 ° C., 2.16 kg load) exceeds 2 g / 10 min, and the injection-foamed resin molded article contains a polypropylene resin (A) satisfying the following requirements (i) to (ii), and the expansion ratio is 1 .1 or more and 10 or less resin molded articles, wherein the polypropylene-based decorative film and the injection foamed resin molded article are molded articles attached via a seal layer (II) Decorative molded body, characterized in Rukoto.
(I): The melting peak temperature Tm is 110 ° C. or more.
(Ii): MFR (230 ° C., 2.16 kg load) is not less than 0.01 g / 10 minutes and not more than 300 g / 10 minutes. When the MFR of the polypropylene resin (A) is MFR (A) and the MFR of the polypropylene resin (B) is MFR (B), the following relational expression (1) is satisfied: The decorated molding as described in.
MFR (B) / MFR (A)> 1.5 (1)   The surface modification layer (III) which consists of surface decoration layer resin on the surface on the opposite side to the affixing surface with the said resin-molding body has the said polypropylene-type decoration film, It is characterized by the above-mentioned. The decorated molded object in any one of 3.   The said surface decoration layer resin consists of polypropylene resin (D), MFR (230 degreeC, 2.16 kg load) of this polypropylene resin (D) is characterized by exceeding 2 g / 10 minutes. The decorated molding as described in 4.   It is a method of manufacturing the decoration molding according to any one of claims 1 to 5, and a step of preparing a polypropylene-based decoration film, an injection foaming resin molding having an expansion ratio of 1.1 times to 10 times. Preparing the injection foam resin molding and the decoration film in a depressurizable chamber box, decompressing the inside of the chamber, heat softening the decoration film, the injection foam resin A method for producing a decorated formed body, comprising the steps of: pressing the decorated film on a formed body; and returning the pressure in the chamber to atmospheric pressure or pressurizing the inside of the chamber.

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