JP6969176B2 - Decorative film and decorative molded body using it - Google Patents

Description

The present invention relates to a decorative film for being attached onto a resin molded body by thermoforming, and a method for manufacturing a decorative molded body using the decorative film. Specifically, a decorative film for being attached to a resin molded body by thermoforming, which can suppress wrinkles and rupture of the film during thermoforming and can exhibit sufficient adhesive strength to the resin molded body. The present invention relates to a method for manufacturing a decorative molded product using the decorative film.

In recent years, there has been an increasing demand for decoration technology that replaces painting due to demands for VOC (volatile organic compound) reduction and the like, and various decoration technologies have been proposed.

In particular, a technique has been proposed in which a decorative sheet instead of a coating film is applied to a molded product by vacuum pressure forming or vacuum forming to form a decorative molded product in which the decorative sheet and the molded product are integrated (see, for example, Patent Document 1). In recent years, it has been receiving particular attention.

Compared to other decorative moldings such as insert molding, vacuum forming by vacuum forming and vacuum forming has a greater degree of freedom in shape, and the end face of the decorative sheet is rolled up to the back side of the object to be decorated, resulting in seams. Since it does not occur, it has an excellent appearance, and it can be thermoformed at a relatively low temperature and low pressure. It has the advantage of.

In such vacuum pressure forming and decorative molding by vacuum forming, when the decorative sheet and the molded body are attached, film breakage or wrinkles occur on the decorative sheet, and the adhesive strength between the decorative sheet and the molded body is sufficient. There was a problem that it could not be obtained. In addition, the use of adhesives, tack fires, etc. has been proposed as a layer for improving the adhesive strength, but it is expensive, the layer structure is extremely complicated, and the solvent resistance and heat resistance are insufficient. , Etc. have problems.

To solve such a problem, by applying a decorative sheet containing an adhesive layer containing a polypropylene resin to a substrate (molded body) made of a polypropylene resin, the decorative sheet and the molded body can be heat-sealed. It has been proposed (see, for example, Patent Documents 2 and 3). The inventions disclosed in Patent Documents 2 and 3 use a polypropylene-based resin as an adhesive layer for a decorative sheet, but substantially further, an acrylic resin is used for a surface layer, a bonding layer and a bulk layer on the adhesive layer. , Polyurethane resin, polycarbonate, etc. need to be provided. By combining different kinds of raw materials in this way, thermoformability such as draw-down property is exhibited, and thermoformability can be ensured in a decorative sheet made of polypropylene resin that does not contain these different kinds of raw materials. However, holes, wrinkles, and air entrainment were likely to occur on the surface of the molded product to which the molded product was attached, and further, film rupture occurred, and it was not possible to obtain a decorative molded product having an excellent appearance. In particular, when polyurethane resin is contained as a different kind of raw material, polyurethane resin, which is a thermosetting resin, does not melt when heated, so that it is easy to maintain the form of the film and the thermoformability is greatly improved, but there is a problem that recyclability is extremely low. rice field.

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

Japanese Unexamined Patent Publication No. 2002-67137 Japanese Unexamined Patent Publication No. 2013-14027 Japanese Unexamined Patent Publication No. 2014-124940

With the conventional technique, a decorative film made of a propylene-based resin that is easy to recycle and has both adhesiveness and appearance has not yet been formed. In view of the above problems, the subject of the present invention is a decorative film used for three-dimensional decorative thermoforming, which can achieve both sufficient adhesive strength and product appearance and facilitates recycling, and a decorative molded product using the same. To provide a manufacturing method for.

In three-dimensional decorative thermoforming, it is necessary that the surface of the molded body and the film are sufficiently softened or melted in order to attach the decorative film in the solid state to the resin molded body in the solid state. It is important to apply the amount of heat required to soften or melt the surface of the molded body and the film, or to use a molded body and film that are easily softened or melted, but if the film is heated sufficiently, the viscosity of the film will decrease. We focused on the fact that the film breaks or rampages due to the push-up of the molded product in the three-dimensional decorative thermoforming process and the inflow of air when the vacuum chamber is returned to atmospheric pressure, leading to poor appearance. As a result, they have found that a decorative film containing a layer made of a specific polypropylene-based resin can solve the above-mentioned problems, and have completed the present invention.

That is, the decorative film of the present invention has any of the following configurations (1) to (3).
(1) A decorative film for being attached onto a resin molded body by thermoforming, wherein the decorative film contains a layer (I) made of a polypropylene-based resin (A), and the polypropylene-based resin (A). ) Is a decorative film having an MFR (230 ° C., 2.16 kg load) of 2 g / 10 minutes or less.
(2) The decorative film has a surface decorative layer (II) made of a surface decorative layer resin on the side of the layer (I) opposite to the side to which the resin molded body is attached. The decorative film according to (1) above.
(3) The surface decorative layer resin is made of a polypropylene-based resin (B), and the MFR (230 ° C., 2.16 kg load) of the polypropylene-based resin (B) exceeds 2 g / 10 minutes. The decorative film according to (1) or (2) above.

Further, the method for manufacturing a decorative molded product of the present invention comprises the following configuration (4) or (5).
(4) The step of preparing the decorative film according to any one of (1) to (3), the step of preparing a resin molded body, the resin molded body and the decorative film in a decompressable chamber box. The step of setting, the step of depressurizing the inside of the chamber, the step of heating and softening the decorative film, the step of pressing the decorative film against the resin molded body, and the step of returning or pressurizing the inside of the chamber to atmospheric pressure. A method for manufacturing a decorative molded body, which is characterized by the above.
(5) The method for producing a decorative molded body according to (4) above, wherein the resin molded body is made of a propylene-based resin composition.

As a result of diligent research, the present inventors have made the decorative film include a layer (I) made of a polypropylene-based resin (A) having a specific MFR. It has excellent thermoformability during original decorative thermoforming and can sufficiently lengthen the heating time, so it is possible to achieve both high adhesive strength to polypropylene resin molded products, which was difficult to bond in the past, and product appearance. It was possible.

According to the method for producing a decorative molded product of the present invention, it is possible to obtain a beautiful decorative molded product having no holes or wrinkles on its surface and no air entrainment between the decorative film and the resin molded product. In addition, the decorative film can be neatly attached to the resin molded body, which has been difficult to adhere in the past. Further, in the decorative molded product thus obtained, the constituent material of the decorative film is polypropylene-based resin (A), and the thermosetting resin layer is not included or may not be contained, so that the decorative molded article may not be contained at the time of recycling. There is little deterioration in appearance and performance, and it is highly suitable for recycling.

It is sectional drawing which illustrates the embodiment of the decorative molded body which attached the decorative film of this invention to a molded body, and (a) to (c) are examples which made the layer structure of a decorative film different from each other. Is. It is a schematic sectional drawing explaining the outline of the apparatus used in the manufacturing method of the decorative molded article of this invention. It is a schematic cross-sectional view explaining the appearance that the resin molded body and the decorative film are set in the apparatus of FIG. It is a schematic cross-sectional view explaining the state of heating and depressurizing the inside of the apparatus of FIG. FIG. 3 is a schematic cross-sectional view illustrating a state in which a decorative film is pressed against a resin molded body in the apparatus of FIG. 2. It is a schematic cross-sectional view explaining how the inside of the apparatus of FIG. 2 returns to atmospheric pressure or pressurizes. It is a schematic cross-sectional view explaining how the edge of an unnecessary decorative film was trimmed in the obtained decorative molded body.

In the present specification, the decorative film means a film for decorating a molded product. Decorative molding refers to molding in which a decorative film and a molded body are attached to each other. The three-dimensional decorative thermoforming is a molding in which a decorative film and a molded body are bonded, and has a step of thermoforming the decorative film along the bonding surface of the molded body and simultaneously bonding the decorative film. In this step, in order to prevent air from being entrained in the decorative film and the molded body, thermoforming is performed under reduced pressure (vacuum), the heated decorative film is attached to the molded body, and pressure is released (applied). It refers to molding, which is a process of bringing them into close contact with each other by pressure). Hereinafter, embodiments for carrying out the present invention will be described in detail.

The decorative film in the present invention is a decorative film for being attached onto a resin molded body by thermoforming, and includes a layer (I) made of a polypropylene-based resin (A), and the polypropylene-based resin (A). Is characterized by an MFR (230 ° C., 2.16 kg load) of 2 g / 10 minutes or less.

Polypropylene resin (A)
By including the layer (I) made of the polypropylene-based resin (A) in the decorative film, it is possible to suppress the occurrence of appearance defects due to the film breaking or violent during thermoforming. As a result, the thermoformability of the decorative film is improved, so that it is not necessary to include a thermosetting resin layer having excellent thermoformability. Further, by improving the moldability of the polypropylene-based resin (A), it is extremely simple to laminate a single layer of the polypropylene-based resin (A) or a layer (I) composed of the polypropylene-based resin (A) and a surface decorative layer. It can be used as a decorative film with various configurations, and with such a configuration, it is possible to form a decorative film by (co) extrusion.

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

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

The lower limit of the MFR of the polypropylene-based 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 setting the MFR to the above value or more, the moldability at the time of manufacturing the decorative film is improved, and it is possible to suppress the occurrence of appearance defects called sharkskin and interface roughness on the film surface.

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

The polypropylene-based 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-based resin (A) is preferably 155 ° C. or higher, more preferably 158 to 170 ° C., and even more preferably 160 to 168 ° C. The polypropylene-based resin (A) is preferably a propylene homopolymer or a propylene-α-olefin copolymer having such a melting point. Further, even if the melting point is high, if a low crystallinity component is contained, the scratch resistance and the solvent resistance are lowered. Therefore, the polypropylene-based resin (A) has an ethylene-α-olefin having an ethylene content of 50 to 70% by weight. It is preferable that it does not contain a copolymer.

The polypropylene-based 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-based polymer, additives, fillers, colorants, other resin components, and the like. The total amount of additives, fillers, colorants, other resin components and the like is preferably 50% by weight or less with respect to the polypropylene-based resin composition.

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 MFR (230 ° C., 2.16 kg load) of the polypropylene-based resin composition is 2 g / 10 minutes or less.

When the decorative molded product of the present invention is molded as a colored molded product, a colorant needs to be used only for the decorative film, so that an expensive colorant is used as compared with the case where the entire resin molded product is colored. It is possible to suppress. In addition, changes in physical properties associated with the addition of a colorant can be suppressed.

As the additive, it can be used for polypropylene-based resins such as antioxidants, neutralizers, light stabilizers, ultraviolet absorbers, crystal nucleating agents, blocking inhibitors, lubricants, antistatic agents, and metal deactivators. Various known additives can be blended.

Examples of the antioxidant include a phenol-based antioxidant, a phosphite-based antioxidant, and a thio-based antioxidant. Examples of the neutralizing agent include higher fatty acid salts such as calcium stearate and zinc stearate. Examples of the light stabilizer and the ultraviolet absorber include hindered amines, benzotriazoles, benzophenones and the like.

Examples of the crystal nucleating agent include amide-based nucleating agents such as aromatic carboxylic acid metal salts, aromatic phosphoric acid metal salts, sorbitol-based derivatives, and rosin metal salts. Among these crystal nucleating agents are aluminum pt-butyl benzoate, 2,2'-methylenebis phosphate (4,6-di-t-butylphenyl) sodium, and 2,2'-methylenebis phosphate (4). , 6-di-t-butylphenyl) aluminum, bis (2,4,8,10-tetra-tert-butyl-6-hydroxy-12H-dibenzo [d, g] [1,2,3] dioxaphospho Examples thereof include a complex of an aluminum hydroxide salt and an organic compound, p-methyl-benzylene sorbitol, p-ethyl-benzylidene sorbitol, and a sodium salt of rosin.

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

As the filler, various known fillers that can be used for polypropylene-based 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, examples of the organic filler include crosslinked rubber fine particles, thermosetting resin fine particles, thermosetting resin hollow fine particles, and the like.

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

It is also possible to color the product in order to impart designability, and various colorants such as inorganic pigments, organic pigments and dyes can be used for coloring. Further, a bright material such as aluminum flakes, titanium oxide flakes, and (synthetic) mica can also be used.

The polypropylene-based resin composition is prepared by melt-kneading a propylene-based polymer with an additive, a filler, and other resin components, and by melt-kneading a propylene-based polymer with an additive, a filler, and the like, and drying the other resin components. It can be produced by a method of blending, a method of dry blending a masterbatch in which an additive, a filler and the like are dispersed in a carrier resin in addition to a propylene polymer and other resin components at a high concentration.

Decorative film The decorative film in the present invention includes a layer (I) made of a polypropylene-based resin (A). That is, the decorative film may be a single-layer film composed of the layer (I) or a multilayer film composed of the layer (I) and another layer. The decorative film of the present invention can have various configurations other than the layer (I). Further, the decorative film of the present invention may be textured, embossed, printed, sandplasted, scratched or the like on the surface thereof.

The decorative film has a large degree of freedom in shape, and the end face of the decorative film is caught up to the back side of the object to be decorated, so that no seam is formed, so that the appearance is excellent. You can express various textures with. For example, in the case of imparting a texture such as embossing to a resin molded body, three-dimensional decorative thermoforming may be performed using an embossed decorative film. For this reason, there are problems in molding with a molded die that embosses, that is, a molded die is required for each embossing pattern, and it is very difficult and expensive to apply complicated embossing to a curved die. It is possible to solve the problem of being, and to obtain a decorative molded body easily embossed with various patterns.

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

As a preferred embodiment of the decorative film, in the case of a single-layer film, it is a film made of a polypropylene-based resin (A) having an MFR of 2 g / 10 minutes or less.

As another preferred embodiment of the decorative film, in the case of a multi-layer film having a two-layer structure, the surface layer to be the surface of the decorative molded body and / or the inner layer to be adhered to the molded body is polypropylene with an MFR of 2 g / 10 minutes or less. It is a layer made of the based resin (A). More preferably, the inner layer to be adhered to the molded product is a layer made of a polypropylene resin (A) having an MFR of 2 g / 10 minutes or less.

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

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

1 (a) to 1 (c) are explanatory views schematically illustrating a cross section of an embodiment of a decorative film attached to a resin molded body. In FIGS. 1 (a) to 1 (c), the arrangement of the layers (I) will be specified and described for ease of understanding, but the layer structure of the decorative film is not interpreted only by these examples. No. In the present specification, reference numeral 1 is a decorative film, reference numeral 2 is a layer (I), reference numeral 3 is a surface decorative layer (II), and reference numeral 5 is a resin molded product. FIG. 1A is an example in which the decorative film is made of a single-layer film, and the layer (I) made of polypropylene-based resin (A) is attached to the resin molded body 5. 1 (b) and 1 (c) are examples in which the decorative film is made of a multilayer film. The decorative film of FIG. 1 (b) is composed of a layer (I) and a surface decorative layer (II), and the layer (I) is attached to the surface of the resin molded body 5 and surface-applied on the layer (I). The decorative layer (II) is laminated. The decorative film of FIG. 1 (c) is composed of a layer (I), an intermediate layer and a surface decorative layer (II), and the layer (I) is attached to the surface of the resin molded body 5 and is placed on the layer (I). The intermediate layer and the surface decorative layer (II) are laminated in this order.

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

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

The surface decorative layer resin is preferably made of a thermoplastic resin, more preferably made of a polypropylene-based resin (B). By using the polypropylene-based resin (B), it is possible to suppress the complexity of the layer structure and the deterioration of recyclability. In addition, by using the polypropylene-based resin (B) for the surface decorative layer of the decorative film, it is possible to improve the solvent resistance and the like. Further, by using the polypropylene resin (B) for the surface decorative layer, the transferability of the surface at the time of manufacturing the decorative film and at the time of thermoforming is improved, and if a mirror surface roll is used at the time of thermoforming, the gloss is higher. It can be a decorative film.

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

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

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

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

As the additive, an additive or the like that may be contained in the polypropylene-based resin (A) can be used.

The polypropylene-based resin composition is prepared by melt-kneading a propylene-based polymer with an additive, a filler, and other resin components, and by melt-kneading a propylene-based polymer with an additive, a filler, and the like, and drying the other resin components. It can be produced by a method of blending, a method of dry blending a masterbatch in which an additive, a filler and the like are dispersed in a carrier resin in addition to a propylene polymer and other resin components at a high concentration.

The decorative film of the present invention has a thickness of preferably about 20 μm or more, more preferably about 50 μm or more, still more preferably about 80 μm or more. By increasing the thickness of the decorative film to such a value or more, the effect of imparting designability is improved, the stability during molding is also improved, and it is possible to obtain a better decorative molded product. 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, still more preferably about 0.8 mm or less. By reducing the thickness of the decorative film to such a value or less, the time required for heating during thermoforming is shortened, productivity is improved, and it becomes easy to trim unnecessary parts.

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%. When the ratio of the thickness of the layer (I) to the entire decorative film is within the above value range, it is possible to avoid insufficient thermoformability of the decorative film.

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 a layer (I) made of a polypropylene-based resin (A), a method of co-extruding a layer (I) made of a polypropylene-based resin (A) and another layer, or one of pre-extruded ones. A thermal lamination method in which the other layer is bonded by applying heat and pressure on one surface of the layer, a dry lamination method and a wet lamination method in which the layer (I) and the other layer are bonded via an adhesive, Examples thereof include an extrusion lamination method and a sand lamination method in which a polypropylene-based resin is melt-extruded onto one surface of one layer extruded in advance. As an apparatus for forming the decorative film, a known (co) extrusion T-die molding machine or a known laminating molding machine can be used. Among these, from the viewpoint of productivity, a (co) extrusion T-die molding machine is preferably used.

As a method of cooling the molten decorative film extruded from the die, a method of bringing the molten decorative film into contact with one cooling roll via the air discharged from the air knife unit or the air chamber unit, or A method of crimping with a plurality of cooling rolls to cool the film can be mentioned.

In order to impart gloss to the decorative film of the present invention, a method of surface-transferring a mirror-shaped cooling roll to the design surface of the decorative film as a product to perform mirror surface processing is used.

Further, the surface of the decorative film of the present invention may have a textured shape. Such a decorative film is a method in which a molten resin extruded from a die is directly pressure-bonded between a roll having an uneven shape and a smooth roll to transfer the uneven shape to a surface. It can be manufactured by a method of surface-transferring an uneven shape by pressure contacting a heated roll and a smooth roll. Examples of the grain shape include satin-like, animal skin-like, hairline-like, and carbon-like.

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

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

Since the polypropylene-based resin is non-polar, it is a polymer having poor adhesiveness. However, the decorative film in the present invention is made of the polypropylene-based resin by containing the layer (I) made of the polypropylene-based resin (A). Very high adhesive strength can be exhibited by sticking the decorative object and the decorative film.

As the base resin of the polypropylene-based resin and the polypropylene-based resin composition, various known propylene monomers such as a propylene homopolymer (homopolypropylene), a propylene-α-olefin copolymer, or a propylene block copolymer are mainly used. Various types of raw materials can be selected. Further, as long as the effect of the present invention is not impaired, a filler such as talc may be contained for imparting rigidity, and an elastomer or the like may be contained for imparting impact resistance. Further, it may contain an additive component and other resin components as in the polypropylene-based resin composition that can form the decorative film described above.

In the decorative molded body in which the decorative film in the present invention is attached to various molded bodies made of polypropylene-based resin, VOC contained in coatings and adhesives is greatly reduced, so that automobile parts, home appliances, vehicles (railroads, etc.) ), Can be suitably used as building materials, daily necessities, etc.

In the method for producing a decorative molded body of the present invention, the above-mentioned step of preparing a decorative film, a step of preparing a resin molded body, and setting the resin molded body and the decorative film in a decompressible chamber box. It is characterized by including a step of depressurizing the inside of the chamber, a step of heating and softening the decorative film, a step of pressing the decorative film against the resin molded body, and a step of returning or pressurizing the inside of the chamber to atmospheric pressure. do.

In three-dimensional decorative thermoforming, the decoration target and the decoration film are set in a decompressable chamber box, the film is heated and softened while the inside of the chamber is depressurized, and the film is pressed against the decoration target to form a chamber. It has a basic process of attaching the decorative film to the surface of the object to be decorated by returning the inside to atmospheric pressure or pressurizing the inside, and the film is attached under reduced pressure. As a result, it is possible to obtain a clean decorative molded product that does not generate air pools. In the manufacturing method of the present invention, any known technique can be used as long as the apparatus and conditions are suitable for three-dimensional decorative thermoforming.

That is, the chamber box may contain all of the decoration target, the decoration film, the mechanism for pressing the decoration film, the device for heating the decoration film, and the like, or the decoration film may be used. It may be a plurality of divided ones.

Further, the mechanism for pressing the decorative object and the decorative film may be any type of one that moves the decorative object, one that moves the decorative film, and one that moves both.
More specifically, a typical molding method is illustrated below.

Hereinafter, a method of attaching a decorative film to a decorative object by using a three-dimensional decorative thermoforming machine will be exemplified with reference to the drawings.

As shown in FIG. 2, the three-dimensional decorative thermoforming machine of this embodiment includes chamber boxes 11 and 12 at the top and bottom, and thermoforms the decorative film 1 in the two chamber boxes 11 and 12. I am doing it. A vacuum circuit (not shown) and an air circuit (not shown) are piped 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 ascending / descending is installed in the lower chamber box 12, and the resin molded body (decoration target) 5 is set on the table 14 (via a jig or the like or directly). NS. A heater 15 is incorporated in the upper chamber 11, and the decorative film 1 is heated by the heater 15. The decoration target 5 can use a propylene-based resin composition as a substrate.

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

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

As shown in FIG. 4, the upper chamber box 11 is lowered, the upper and lower chamber boxes 11 and 12 are joined to close the inside of the box, and then the insides of the respective chamber boxes 11 and 12 are put into a vacuum suction state, and the heater 15 is used. The decorative film 1 is heated by the above method.

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 while the upper and lower chamber boxes 11 and 12 are in a vacuum suction state. The decorative film 1 is pressed against the decorative object 5 to cover the decorative object 5. Further, as shown in FIG. 6, by opening the upper chamber box 11 under atmospheric pressure or supplying compressed air from the pneumatic tank, the decorative film 1 is brought into close contact with the decorative object 5 with a larger force.

Subsequently, the inside of the upper and lower chamber boxes 11 and 12 is opened under atmospheric pressure, and the decorative molded 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 molded body 6 are trimmed.

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

Further, in the two chamber boxes 11 and 12 divided into upper and lower parts by the decorative film 1, the pressure inside the chamber box on the side to which the decorative object 5 and the decorative film 1 are attached may be within this range, and the upper and lower chamber boxes may be up and down. The drawdown of the decorative film 1 can be suppressed by changing the pressures of the chamber boxes 11 and 12 of the above.

At this time, a film made of a general polypropylene-based resin may be significantly deformed and ruptured by a slight pressure fluctuation due to a decrease in viscosity during heating.

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

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

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

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

The higher the heater temperature, the shorter the time required for heating, but the heater side is sufficiently heated until the inside of the decorative film 1 (or the surface opposite to the heater when the heater is installed on only one side) is sufficiently heated. The heater temperature is preferably 500 ° C. or lower, more preferably 450 ° C. or lower, and most preferably 400 ° C. It is as follows.

Although the appropriate heating time varies depending on the heater temperature, it is preferable that the heating time is 2 seconds or more after the polypropylene-based decorative film is heated and the re-stretching called springback is completed.

That is, the decorative film heated by the heater expands thermally when heated from the solid state and sags once as the crystal melts, and when the crystal melt progresses, the molecules relax and the springback temporarily rebounds. Is observed, and then it hangs down due to its own weight. However, after springback, the crystals of the film are completely melted and the molecules are sufficiently relaxed, so that sufficient adhesive strength can be obtained.

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

When decorating a molded product having a complicated shape having irregularities or achieving higher adhesive strength, it is preferable to supply compressed air when the decorative film is brought into close contact with the substrate. The pressure in the upper chamber box when compressed air is introduced is 150 kPa or more, preferably 200 kPa or more, and more preferably 250 kPa or more. The upper limit is not particularly limited, but if the pressure is too high, the equipment may be damaged. Therefore, 450 kPa or less, preferably 400 kPa or less is preferable.

Hereinafter, the present invention will be described in more detail as examples, but the present invention is not limited to this embodiment.

1. 1. Measurement method of various physical properties (i) MFR
Measured at 230 ° C. with a 2.16 kg load according to ISO 1133: 1997 Connections M. The unit is g / 10 minutes.

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

2. 2. Materials used (1) Polypropylene resin (A), polypropylene resin (B)
The following polypropylene-based resin was used.
(A-1): Propylene homopolymer (MFR = 0.4 g / 10 minutes, Tm = 161 ° C), manufactured by Japan Polypropylene Corporation, trade name "Novatec (registered trademark) EA9"
(A-2): Polypropylene resin composition (MFR = 0.) In which 96% by weight of polypropylene resin (A-1) is blended with 4% by weight of black pigment MB (EPP-K-120601 manufactured by Polycol Kogyo Co., Ltd.). 4 g / 10 minutes, Tm = 161 ° C)
(B-1): Propylene homopolymer (MFR = 2.4 g / 10 minutes, Tm = 161 ° C), manufactured by Japan Polypropylene Corporation, trade name "Novatec (registered trademark) FY6"
(B-2): Propylene homopolymer (MFR = 10 g / 10 minutes, Tm = 161 ° C), manufactured by Japan Polypropylene Corporation, trade name "Novatec (registered trademark) FA3KM"
(B-3): Polypropylene resin (B-2) 96% by weight with MFR = 11 g / 10 min white pigment MB (EPP-W-59578 manufactured by Polycol Kogyo Co., Ltd., titanium oxide content 80% by weight). Polypropylene resin composition blended by 4% by weight (MFR = 10 g / 10 minutes, Tm = 161 ° C.)
(B-4): Polypropylene resin composition blended with 100 parts by weight of polypropylene resin (B-2) by 0.4 parts by weight of a nucleating agent (trade name "Milllad NX8000J" manufactured by Milliken Japan Co., Ltd.). (MFR = 10 g / 10 minutes, Tm = 164 ° C)
(B-5): Metallocene-catalyzed propylene-α-olefin copolymer (MFR = 7 g / 10 minutes, Tm = 125 ° C., Mw / Mn = 2.5), manufactured by Japan Polypropylene Corporation, trade name " Wintech (registered trademark) WFX4M "
(B-6): Polypropylene resin composition obtained by blending 100 parts by weight of a polypropylene resin (B-5) with 0.4 parts by weight of a nucleating agent (trade name "Milllad NX8000J" manufactured by Milliken Japan Co., Ltd.). (MFR = 7 g / 10 minutes, Tm = 127 ° C)
(B-7): Polypropylene resin composition (MFR = 10 g / 10) in which 96% by weight of polypropylene resin (B-2) is blended with 4% by weight of silver pigment MB (PPCM913Y-42 SILVER21X manufactured by Toyo Color Co., Ltd.). Minutes, Tm = 161 ° C)

(2) Polypropylene resin (X) used for the resin molded body
The following polypropylene-based resin was used.
(X-1): Propylene homopolymer (MFR = 40 g / 10 minutes, Tm = 165 ° C.), manufactured by Japan Polypropylene Corporation, trade name "Novatec (registered trademark) MA04H"
(X-2): Propylene ethylene block copolymer (MFR = 30 g / 10 minutes, Tm = 164 ° C.), manufactured by Japan Polypropylene Corporation, trade name "Novatec (registered trademark) NBC03HR"
(X-3): 60% by weight of polypropylene resin (X-2), 20% by weight of EBR (Toughmer (registered trademark) A0550S manufactured by Mitsui Chemicals, Inc.) with MFR = 1.0, inorganic filler (Nippon Talc) Talc P-6 manufactured by Co., Ltd., average particle size 4.0 μm) 20% by weight blended polypropylene resin composition

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

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

-As the three-dimensional decorative thermoformed resin molded body (base) 5, an injection molded body made of the polypropylene-based resin (X-1) obtained above was used.
As a three-dimensional decorative thermoforming apparatus, "NGF-0406-SW" manufactured by Fuse Vacuum Co., Ltd. was used. The decorative film 1 was cut out with a width of 250 mm and a length of 350 mm so that the longitudinal direction was the MD direction of the film, and was set on a film fixing jig 13 having an opening size of 210 mm × 300 mm. The resin molded body (base) 5 is placed on a sample mounting table having a height of 20 mm, which is installed on a table 14 located below the film fixing jig 13, and is manufactured by Nichiban Co., Ltd. “Nystack NW-K15”. I pasted it through. The film fixing jig 13 and the table 14 were installed in the chambers 11 and 12, and the chamber was closed to close the inside of the chamber boxes 11 and 12. The chamber box is divided into upper and lower parts via the decorative film 1. With the upper and lower boxes vacuum sucked and the pressure 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 at an output of 80% to form the decorative film 1. It was heated. Vacuum suction was continued even during heating, and the pressure was finally reduced to 0.1 kPa. Twenty seconds after the decorative film 1 is heated and temporarily sags, and then the springback phenomenon of tensioning back ends, the table 14 installed in the lower chamber box 12 is moved upward to form a resin molded body. The (base) 5 was pressed against the decorative film 1, and immediately after that, compressed air was sent so that the pressure in the upper chamber box 11 became 270 kPa to bring the resin molded body (base) 5 and the decorative film 1 into close contact with each other. In this way, a three-dimensional decorative thermoformed product 6 to which the decorative film 1 was attached to the upper surface and the side surface of the resin molded body (base) 5 was obtained.

・ Evaluation of physical properties (1) Evaluation of the appearance of the decorative molded product The draw-down state of the decorative film during three-dimensional decorative thermoforming, and the application of the decorative film of the decorative molded product with the decorative film attached to the substrate. The state of wearing was visually observed and evaluated according to the criteria shown below.
◯: During three-dimensional decorative thermoforming, the decorative film was not drawn down and the substrate and the decorative film were in contact with each other at the same time on the entire contact surface, so that contact unevenness did not occur and the film was evenly attached. ing.
Δ: Since the decorative film was slightly drawn down during the three-dimensional decorative thermoforming, it came into contact with the decorative film from the center of the substrate, and uneven contact occurred at the upper end of the substrate.
X: During three-dimensional decorative thermoforming, the decorative film drew down significantly, causing uneven contact on the entire surface of the substrate.

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

(3) Adhesive strength between the resin molded body (base) and the decorative film Nitoms Co., Ltd. "Craft Adhesive Tape No. 712N" was cut out to a width of 75 mm and a length of 120 mm, and from the end of the resin molded body (base). It was attached to a resin molded body (base) in a range of 75 mm × 120 mm and subjected to masking treatment (the exposed portion on the surface of the base has a width of 45 mm and a length of 120 mm). The masking surface of the resin molded body (base) was installed in the three-dimensional decorative thermoforming apparatus NGF-0406-SW so as to be in contact with the decorative film, and three-dimensional decorative thermoforming was performed.

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

(4) Recyclability Evaluation The obtained decorative molded body was crushed to prepare a recycled molded body by injection molding in the same manner as in the production of the resin molded body (base). The obtained recycled molded product had an excellent appearance (evaluation "○" in the table).

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

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

Example 4
-Manufacturing of decorative film For the production of decorative film, a surface layer extruder-1 having a diameter of 30 mm (diameter) and an extruder-2 having a diameter of 40 mm (diameter) are connected, and the lip opening is 0.8 mm. A two-kind two-layer T-die with a die width of 400 mm was used. Polypropylene resin (B-2) is charged into the surface layer extruder-1 and polypropylene resin (A-1) is charged into the extruder-2, and the resin temperature is 240 ° C., and the surface layer extruder-1 is discharged. The melt extrusion was performed under the conditions that the amount was 4 kg / h and the discharge amount of the extruder-2 was 12 kg / h.
The melt-extruded film was cooled and solidified on a cooling roll rotating at 80 ° C. and 3 m / min so that the surface layer was in contact with the film. An unstretched film was obtained. The obtained unstretched film is a decorative film containing a layer (I) and a surface layer (II).
Other than that, the evaluation was performed in the same manner as in Reference Example 1. The results obtained are shown in Table 1.
Since the MFR of the polypropylene-based resin (A-1) constituting the layer (I) was 2 g / 10 minutes or less, the obtained decorative molded product was excellent in appearance and adhesive strength. Further, the polypropylene-based resin (B-2) was laminated on the layer (I) as the surface layer [layer (II)], resulting in excellent gloss.

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

Comparative Example 1
In the production of the decorative film of Reference Example 1, the evaluation was carried out in the same manner as in Reference Example 1 except that the polypropylene-based resin (A-1) was changed to the polypropylene-based resin (B-1). The results are shown in Table 1.
Since the polypropylene resin composition (B-1) has a high MFR of 2.4 g / 10 minutes, it is inferior in thermoforming stability, and the decorative film is greatly drawn down during three-dimensional decorative thermoforming, so that it comes into contact with the entire surface of the substrate. The result was that unevenness occurred and the appearance of the decorative molded product was significantly inferior.

Example 6
In the production of the decorative film of Example 4, the evaluation was carried out in the same manner as in Example 4 except that the polypropylene-based resin (B-2) was changed to the polypropylene-based resin (B-4). The results are shown in Table 2.
Since the MFR of the polypropylene-based resin (A-1) constituting the layer (I) was 2 g / 10 minutes or less, the obtained decorative molded product was excellent in appearance and adhesive strength. Further, the polypropylene-based resin (B-4) to which the nucleating agent was added was laminated on the layer (I) as the surface decorative layer (II), resulting in excellent gloss.

Example 7
In the production of the decorative film of Example 4, the evaluation was carried out in the same manner as in Example 4 except that the polypropylene-based resin (B-2) was changed to the polypropylene-based resin (B-5). The results are shown in Table 2.
Since the MFR of the polypropylene-based resin (A-1) constituting the layer (I) was 2 g / 10 minutes or less, the obtained decorative molded product was excellent in appearance and adhesive strength. Further, the polypropylene-based resin (B-5) was laminated on the layer (I) as the surface decorative layer (II), resulting in excellent gloss.

Example 8
In the production of the decorative film of Example 4, the evaluation was carried out in the same manner as in Example 4 except that the polypropylene-based resin (B-2) was changed to the polypropylene-based resin (B-6). The results are shown in Table 2.
Since the MFR of the polypropylene-based resin (A-1) constituting the layer (I) was 2 g / 10 minutes or less, the obtained decorative molded product was excellent in appearance and adhesive strength. Further, the polypropylene-based resin (B-6) to which the nucleating agent was added was laminated on the layer (I) as the surface decorative layer (II), resulting in excellent gloss.

Example 9
In the production of the decorative film of Example 4, the evaluation was carried out in the same manner as in Example 4 except that the polypropylene-based resin (A-1) was changed to the polypropylene-based resin (A-2). The results are shown in Table 2.
Since the MFR of the polypropylene-based resin (A-2) constituting the layer (I) is 2 g / 10 minutes or less, the obtained decorative molded product has excellent appearance and adhesive strength, and the layer (I) is black. Because it was colored in, it had an excellent appearance. Further, the polypropylene-based resin (B-2) was laminated on the layer (I) as the surface decorative layer (II), resulting in excellent gloss.

Example 10
In the production of the decorative film of Example 4, the polypropylene-based resin (A-1) was changed to the polypropylene-based resin (A-2), and the polypropylene-based resin (B-2) was changed to the polypropylene-based resin (B-7). Except for the above, the evaluation was performed in the same manner as in Example 4. The results are shown in Table 2.
Since the MFR of the polypropylene-based resin (A-2) constituting the layer (I) was 2 g / 10 minutes or less, the obtained decorative molded product was excellent in appearance and adhesive strength. Further, the polypropylene-based resin (B-7) was laminated on the layer (I) as the surface decorative layer (II), resulting in excellent gloss. Further, since the layer (I) is colored black and the layer (II) is colored silver, the film becomes a metallic film and has an excellent appearance.

1 Decorative film 2 layers (I)
3 Surface decorative layer (II)
5 Resin molded body (decoration target, substrate)
6 Decorative molding 11 Upper chamber box 12 Lower chamber box 13 Jig 14 Table 15 Heater

Claims (2)

A decorative film for being thermally molded onto a resin molded body made of a polypropylene-based resin or a polypropylene-based resin composition , wherein the decorative film has a layer (I) made of a polypropylene-based resin (A). A surface decorative layer (II) made of a surface decorative layer resin is provided on the side of the layer (I) opposite to the side to which the resin molded body is attached.
Wherein the polypropylene-based resin (A), MFR (230 ° C., 2.16 kg load) Ri is 2 g / 10 min der hereinafter the surface decorative layer resin is made of polypropylene-based resin (B), the polypropylene resin decorative film for MFR (230 ℃, 2.16kg load), characterized in der Rukoto than 5 g / 10 min (B). A decorative molded body comprising the decorative film according to claim 1 and a resin molded body made of a polypropylene-based resin or a polypropylene-based resin composition, and having the decorative film on the resin molded body.

Images