TW201441064A - Transfer film for decoration - Google Patents

Abstract

Provided is a transfer film for decoration, which exhibits satisfactory molding performance during injection molding, while having excellent surface protection performance. A transfer film for decoration according to the present invention is obtained by sequentially laminating, on the surface of a supporting film, a mold release layer (2), a hard coat layer (3), a primer layer (4), a decorative layer (5) and a bonding layer (6). The hard coat layer (3) is formed of a tack-free ultraviolet curable composition which contains at least an acrylic acrylate resin that contains a hydroxyl group and has a weight average molecular weight of from 40,000 to 100,000 (inclusive), an ultraviolet initiator, silica particles having an average particle diameter of from 10 nm to 100 nm (inclusive), and a polytetrafluoroethylene powder having an average particle diameter of from 1 [mu]m to 10 [mu]m (inclusive). The primer layer (4) is formed of a two-package curable resin which contains at least an acrylic polyol resin, a polyisocyanate compound and a vinyl chloride-vinyl acetate copolymer resin containing a hydroxyl group.

Description

Transfer film for decoration

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a transfer film for decoration, and more particularly to a formed simultaneous transfer transfer film having a mold transfer property and excellent surface protection properties.

A method for producing a molded article having a surface having excellent scratch resistance, chemical resistance, and the like, which is obtained by inserting a transfer film having a hard coat layer and a decorative layer into the injection molding. In the mold, a method of transferring the hard coat layer and the decorative layer to the molding resin (transferred material) by the hot pressing at the time of injection molding is also performed. In recent years, a hard coating layer of a transfer film (hereinafter also referred to as "molding and simultaneous transfer transfer film") is more mainstream than a thermosetting type. Further, recently, a transfer film of a post-hardening type has become the mainstream, and the hard coat layer before transfer is in a semi-hardened state in which ultraviolet light is cured, and after the transfer transfer, the hard coat layer is completely cured by irradiation with ultraviolet rays.

The simultaneous molding of the transfer film must correspond to various molding conditions (ejection speed, resin temperature, pressure holding, cooling temperature, cooling time) and mold shape. Therefore, there are many problems in which the transfer film is decorated at the same time as molding. As a main defect caused by the transfer film which is formed by simultaneous molding, there is, for example, a so-called short Road (notch), burrs, alluvial overflow (pattern flow near the gate), whitening, flow pattern, cracking, interlayer peeling.

On the other hand, as a series of items requiring surface protection performance of the transfer-molding transfer film, for example, adhesion to a molding resin, pencil hardness, abrasion resistance (RCA abrasion), steel wool polishing, and the like are mentioned.

In the transfer at the time of injection molding, an area where transfer cannot be performed may occur. The aforementioned short circuit (notch) means the area that cannot be transferred. Further, the burr refers to a portion where the transfer film is not cut off beautifully at the boundary of the transfer region (that is, it cannot be cut as desired), and the transfer film is overflowed around the transfer region. Further, the alluvial overflow (pattern flow in the vicinity of the gate) means that the printed pattern partially disappears near the gate where high temperature and high pressure are applied. Moreover, the term "whitening" refers to a phenomenon in which the surface of the transfer film is whitened due to heat during injection molding. Further, the term "flow pattern" means that the surface of the transfer film or the printed pattern is left behind by the influence of the flow of the injection-molded resin, leaving a trace of flow. Further, the term "rupture" means that the transfer film cannot be broken in accordance with the shape of the mold for injection molding. In addition, the term "interlayer peeling" refers to a phenomenon in which the transfer film is peeled off between layers due to the hot pressing and the peeling operation timing at the time of injection molding. This interlaminar stripping system occurs in particular mostly between the layers adjacent to the protective layer.

As such, since the requirements are related to many aspects, it is possible to make the material for forming and simultaneously transferring the transfer film more suitable than the material which is particularly excellent in some characteristics (such as hardness, elongation, heat resistance). A material with a good balance of properties. For example, although a hard material can obtain good results in pencil hardness and steel wool polishing, it is liable to be broken and the abrasion resistance is also low. On the other hand, soft materials though There is no rupture, and it can follow the deep drawing shape, but it is easy to produce whitening and burrs. Further, although the material having high heat resistance can suppress alluvial overflow, flow pattern, and whitening, it is liable to cause cracking and cannot follow the deep drawing shape. On the other hand, although the material having low heat resistance does not cause cracking, it can follow the deep drawing shape, but it is likely to cause alluvial overflow, flow pattern, and whitening.

As such, the material used for molding and simultaneously applying the transfer film is often in a trade-off relationship in which various characteristics and functions are required. As described above, in the technical field in which many topics are formed and decorated at the same time, the following several improvement proposals are proposed.

In many cases, the ultraviolet curable resin used as the protective layer (hard coating layer) is hard and weak after being cured. Therefore, the hardness tends to be high and the abrasion resistance tends to be weak. In the case of the patent document 1, the ultraviolet curable resin of the hard coating layer is crosslinked with a polyisocyanate compound, and the abrasion resistance is improved, but the abrasion resistance is improved, but the film is not easily cut and the burrs are likely to occur. Disadvantages. Then, in Patent Document 2, by adding colloidal cerium oxide to the hard coating layer, the transferred film becomes brittle, and the balance between the burr countermeasure and the wear resistance is sought.

However, as disclosed in Patent Documents 1 and 2, it has been found that the addition of the polyisocyanate compound to the hard coat layer is a factor that hinders the radical polymerizability of the ultraviolet curable resin, and reduces the steel wool polishing and the pencil hardness. Further, when the polyisocyanate compound is added to the hard coat layer, the peeling force (adhesiveness) at the time of peeling between the release layer and the hard coat layer is increased, and the peeling performance over time cannot be stabilized.

On the other hand, in the case of a transfer film in a post-hardened form (after transfer, ultraviolet rays are applied to harden the hard coat layer), by hard The material of the coating layer is easy to adhere. Then, by adding a cerium oxide having a particle diameter of several micrometers as a adhesion preventing agent to the material of the hard coating layer, the adhesion can be prevented, but if a few micrometers of cerium oxide is added to the hard coating layer, the surface gloss is lowered. Therefore, Patent Document 3 proposes to prevent the adhesion by providing a new adhesion preventing layer by not adding the cerium oxide to the hard coating layer. However, it is not appropriate to re-set the adhesion prevention layer to increase the cost.

Further, although an ultraviolet curable resin is often used for the hard coat layer, in many cases, the adhesion between the hard coat layer and the finish layer may not be sufficiently obtained. Thus, Patent Document 4 proposes to use a primer layer as a first primer layer containing a urethane resin, an acrylic resin, and a polyisocyanate compound, and a second substrate comprising an acrylic resin formed on the primer. Two layers of lacquer layer to maintain the adhesion between the decorative layer. As such, the primer layer must be customized for each of the ultraviolet curable resins used in the hard coat layer. In general, most of the specific UV curable resins require a specific primer layer.

Prior technical literature Patent literature

Patent Document 1 Japanese Patent Laid-Open No. Hei 10-58895

Patent Document 2 Japanese Patent Laid-Open Publication No. 2009-137219

Patent Document 3 Japanese Patent Laid-Open Publication No. 2009-291996

Patent Document 4 Japanese Patent Laid-Open No. Hei 5-278399

In the present invention, an object of the present invention is to provide a transfer film for decoration, which is excellent in surface protection performance when it is molded and decorated at the same time as molding.

The present invention has been made in an effort to solve the above problems, and is achieved by the following means.

One aspect of the present invention is a transfer film for decoration, which is a transfer film for decoration which is cured by ultraviolet rays after transfer, and is characterized in that the transfer film for decoration is made The surface of one side of the support film is formed by laminating the release layer, the hard coat layer, the primer layer, the decorative printed layer and the adhesive layer in this order; the composition of the hard coat layer is made to be tack free An ultraviolet curable composition containing at least a acryl acrylate resin having a weight average molecular weight of from 40,000 to 100,000 and containing a hydroxyl group, an ultraviolet initiator, and an average particle. The cerium oxide particles having a diameter of 10 nm or more and 100 nm or less and the polytetrafluoroethylene powder having an average particle diameter of 1 μm or more and 10 μm or less; and the composition of the primer layer is a two-liquid curing resin. The liquid-hardening resin contains at least an acrylic polyol resin, a polyisocyanate compound, and a vinyl chloride-vinyl acetate copolymer resin containing a hydroxyl group.

Further, in the transfer film for decoration, the content of the polytetrafluoroethylene powder contained in the hard coat layer may be 0.1% by weight or more and 2% by weight or less based on the acryl acrylate resin. Within the scope.

Further, in the transfer film for decoration, the content of the cerium oxide particles contained in the hard coat layer may be 10% by weight or more and 40% by weight or less based on the acryl acrylate resin. Within the scope.

Moreover, in the transfer film for decoration described above, the hard coat layer may further contain a polyisocyanate compound.

Further, another aspect of the present invention is a transfer film for decoration, which is a transfer film for decoration which is cured by ultraviolet rays after transfer, and is characterized in that the transfer is performed by the transfer. The film is formed by laminating the release layer, the first hard coat layer, the second hard coat layer, the primer layer, the decorative printed layer, and the adhesive layer on the surface of one side of the support film in this order; The composition of the hard coat layer is a non-adhesive ultraviolet curable composition, and the ultraviolet curable composition contains at least a propylene acrylate resin having a weight average molecular weight of from 40,000 to 100,000 and containing a hydroxyl group, and ultraviolet light. a cerium oxide particle having a total particle diameter of 10 nm or more and 100 nm or less, and a polytetrafluoroethylene powder having an average particle diameter of 1 μm or more and 10 μm or less, and no polyisocyanate compound; The composition of the hard coat layer is a non-adhesive ultraviolet curable composition, and the ultraviolet curable composition contains at least a weight average molecular weight of 40,000 to 100,000 or less and a hydroxyl group. The acryl acrylate resin, the ultraviolet ray initiator, the cerium oxide particles having an average particle diameter of 10 nm or more and 100 nm or less, and the polyisocyanate compound, and no polytetrafluoroethylene powder; the composition of the primer layer It is a two-liquid hardening type resin, and the two-liquid hardening type resin contains at least: an acrylic polyol tree A lipid, a polyisocyanate compound, and a vinyl chloride vinyl acetate copolymer resin containing a hydroxyl group.

Further, in the transfer film for decorative use, the layer thickness of the first hard coat layer may be in the range of 0.5 μm or more and 2.5 μm or less, and the layer thickness of the second hard coat layer may be 3.0 μm or more and 8.0. Within the range of μm or less.

Further, in the transfer film for decoration, the content of the polytetrafluoroethylene powder contained in the first hard coat layer may be based on the acryl acrylate resin contained in the first hard coat layer. It is in the range of 0.1% by weight or more and 2% by weight or less.

Further, in the transfer film for decoration, the content of the cerium oxide particles contained in the first hard coat layer and the second hard coat layer may be included in the first hard coat layer and The acryl acrylate resin of the second hard coat layer is in a range of 10% by weight or more and 40% by weight or less.

According to one aspect of the present invention, it is possible to inexpensively provide a transfer film which can be more reduced in the case of simultaneous injection molding of the transfer film for decorative use and which is less preferable than the prior art. Short circuit (notch), burrs, alluvial overflow (pattern flow near the gate), whitening, flow pattern, cracking, interlayer peeling, and can satisfy the adhesion between the forming resin and the pencil hardness and resistance as necessary for surface protection properties. Wear (RCA wear), steel wire grinding.

1‧‧‧Support film

2‧‧‧ release layer

3‧‧‧hard coating layer

4‧‧‧primer layer

5‧‧‧Adding layer

6‧‧‧Next layer

7‧‧‧Forming resin

8‧‧‧1st hard coating layer

9‧‧‧2nd hard coating layer

Fig. 1 is a cross-sectional view showing an example of a layer structure of a transfer film for decoration according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view showing the layer structure of the molded article of the transfer film for transfer of Fig. 1 .

Fig. 3 is a cross-sectional view showing another example of the layer structure of the transfer film for decoration of the embodiment of the present invention.

Fig. 4 is a cross-sectional view showing a layer structure of a molded article of the transfer film for transfer of Fig. 3;

[Embodiment of the Invention]

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or similar functions are denoted by the same reference numerals, and the description thereof will not be repeated.

Fig. 1 is a cross-sectional view showing an example of a layer structure of a transfer film for decoration according to an embodiment of the present invention. As shown in Fig. 1, the transfer film of the present embodiment includes the support film 1, the release layer 2, the hard coat layer 3, the primer layer 4, and the decorative printed layer in this order (hereinafter also referred to as " A layer of the decorative layer ") 5 and the subsequent layer 6. Here, in general, the decorative layer 5 is usually a plurality of layers, and an optically decorative material such as embossing or pearl pigment may be added. In addition, Fig. 2 is a cross-sectional view showing the layer structure of the molded article of the transfer film for decorative printing of Fig. 1, which is transferred to the decorative transfer of the embodiment at the same time of injection molding. A cross-sectional view of the formed article after printing the film. As shown in Fig. 2, the molded product is composed of the adhesive layer 7, the decorative layer 5, the primer layer 4, and the hard coat layer 3 in this order on the molding resin 7.

Further, although not shown in the drawings, a charge preventing layer may be provided on the surface opposite to the release layer forming surface of the support film 1. By providing the charging preventing layer, it is possible to reduce the adhesion of foreign matter to the transfer film and to improve the yield (in other words, to reduce the incidence of defective products). The charge prevention layer may be a resin layer containing an existing charge inhibitor, and may be, for example, a conductive filler such as ITO or ruthenium-doped tin, a quaternary ammonium salt, a surfactant, polythiophene, PEDOT, or the like. A layer of a conductive polymer or a coating agent for a sol-gel reactant.

Hereinafter, each layer of the transfer film for decoration of the present embodiment will be described.

(Substrate film 1)

As the base film 1, for example, a polyethylene terephthalate film, a polyethylene naphthalate film, a polypropylene film, a polyethylene film, a triacetyl cellulose film, a polycarbonate film, and a resistant film can be used. A substrate of a ray film, a celecyan film, an acrylic film, a vinyl chloride film, or a PET-G film. The thickness of the film which can be used is in the range of 25 μm or more and 150 μm or less, preferably in the range of 38 μm or more and 50 μm or less.

(release layer 2)

The release layer 2 is most important because it is exfoliated by the hard coat layer 3, but heat resistance, solvent resistance, overcoat property, and elongation are also required. Therefore, it is preferably formed by curing the resin. Therefore, as the release layer 2, for example, a melamine resin, a polyolefin resin, or the like can be used. A cured product of a urethane resin, cellulose acetate or the like. Although in the foregoing materials, most of the materials will be used with the release layer 2 of the melamine resin, in the case of using the melamine resin in the release layer 2, a sintering step (140 to 200 ° C) at a high temperature is required, and / Contains harmful formaldehyde. Therefore, the research was conducted with all my heart, and as a result, the inventors found that an acrylic resin containing a long-chain alkyl group and/or a polyoxymethylene-modified acrylic resin, a cured resin with an acrylic polyol resin, and a polyisocyanate compound are most suitable as a release type. Layer 2.

The thickness of the release layer 2 is not particularly limited, but is preferably in the range of 0.1 μm or more and 5 μm or less. Further, by including the resin filler or the inorganic filler in the release layer 2, it is possible to prevent glare or roughen the surface.

(hard coating layer 3)

The hard coat layer 3 is not adhered, and is preferably formed of a crosslinkable resin by irradiating ultraviolet rays or electron beams after being transferred to the object to be transferred. The reason why the transfer film is crosslinked after the transfer is that the transfer film of the present embodiment is often used in an injection molding or a heat transfer method. However, if the crosslinking is performed in advance, it is likely to occur during the extension of the transfer. It is broken and becomes a bad appearance.

As a method of achieving non-adhesiveness before transfer, there are mainly the following three methods. The first method is a method using a polymer type acrylate or methacrylate. The second method is a method in which a liquid-like or semi-liquid ultraviolet-curable resin is slightly hardened by using a cross-linking resin such as an isocyanate/polyol resin or an epoxy resin/amine to form a non-adhesive method. The third method is a method in which the hard coat layer 3 is slightly irradiated with ultraviolet rays or electron beams to be in a semi-hardened state.

In the present embodiment, the first method is used. The reason is that the second method excessively improves the adhesion between the release layer 2 and the peeling property as a transfer film. Further, in the third method, the intensity deviation (specifically, the intensity deviation of the ultraviolet ray or the electron beam) or the reproducibility of the ultraviolet ray irradiation machine or the electron beam irradiation machine is a problem, and the process cost is also high.

In the case where the first method is used, in order to prevent sticking and to prevent the resin from flowing during the injection molding, it is preferred to use a weight average molecular weight of 40,000 to 100,000 or less, and a glass transition temperature of 60 ° C or higher. An acrylic resin (acrylic acrylate resin) containing an acrylonitrile group or a methacrylonitrile group. In other words, the acryl-based acrylate resin contained in the hard coat layer 3 has a weight average molecular weight of 40,000 or more and 100,000 or less, and preferably contains a hydroxyl group. In the case where the weight average molecular weight is less than 40,000, the non-adhesiveness is insufficient, and in addition to the problem of the upper coating property, the overflow is likely to occur at the time of molding. Further, in the case where the weight average molecular weight is more than 100,000, the radical reactivity is lowered, and the hardness at the time of crosslinking cannot be improved. Further, the most suitable weight average molecular weight of the acryl acrylate resin is in the range of 60,000 to 80,000.

Such an acryl-based acrylate resin has advantages such as non-adhesiveness (no adhesion only due to evaporation of a solvent portion) or less hardening shrinkage than a low-polymer or monomer which is generally used as an ultraviolet curing resin, but on the other hand, Since it is a polymer resin, it has a tendency to deteriorate ultraviolet curability. Therefore, in order to compensate for the deterioration of the surface hardness of the hard coat layer 3, it is necessary to add nano cerium oxide particles to the acryl acrylate resin. child. When the amount added is less than 10% by weight based on the acryl acrylate resin, the effect on hardness is not observed. On the other hand, when it is more than 40% by weight, it becomes excessively weak and the abrasion resistance is deteriorated. Therefore, the most suitable addition amount of the nano cerium oxide particles is in the range of 10% by weight or more and 40% by weight or less based on the acryl acrylate resin. Further, the optimum amount of the nano cerium oxide particles is in an amount of 15% by weight or more and less than 35% by weight.

The weight average molecular weight described above is measured by GPC (gel permeation chromatography) and is calculated in terms of styrene.

In order to maintain transparency, the nano cerium oxide particles added to the hard coat layer 3 preferably have a particle diameter of 10 nm or more and 100 nm or less. Further, the nano cerium oxide particles are preferably surface-treated by a decane coupling agent containing an acrylonitrile group/methacryl oxime group, but may be only untreated nano cerium oxide particles.

In the case where the main composition of the hard coat layer 3 is an acryl acrylate resin and a nano cerium oxide particle, the resistance of the steel wool test is excellent due to the hardness of the outermost surface, but the wear resistance (especially RCA wear) is excellent. ), it is easy to be a bad result due to its brittleness. However, by adding a polytetrafluoroethylene powder having an average particle diameter of 1 μm or more and 10 μm or less in a range of 0.1% by weight to 2% by weight or less based on the acryl acrylate resin, the above-mentioned one can be improved. Wear resistance. When the average particle diameter of the added polytetrafluoroethylene powder is less than 1 μm, the dispersibility is deteriorated and it is not easy to handle. Further, in the case where the average particle diameter of the added polytetrafluoroethylene powder is more than 10 μm, it is not easy to remain in the hard coat layer 3, and the polytetrafluoroethylene powder is easily detached or hard-coated. The disorder of the layer 3 becomes high and thus is not good. More preferably, the average particle diameter of the polytetrafluoroethylene powder is in the range of 2 μm or more and 7 μm or less.

In addition, when the amount of the polytetrafluoroethylene powder added is less than 0.1% by weight based on the acryl acrylate resin, the effect of abrasion resistance is insufficient, and when it is more than 2% by weight, the scattering property is lowered and lowered. Transparency is therefore not good. Therefore, the preferred range of the amount of the polytetrafluoroethylene powder to be added is 0.1% by weight or more and 2% by weight or less. More preferably, it is in the range of 0.2% by weight or more and 1% by weight or less.

In the production of the transfer film for decoration of the present embodiment, it is preferable to apply the entire layer of the hard coat layer 3 to the adhesive layer 3 other than the release layer 2 (that is, the hard coat layer 3 and the primer layer 4). The decorative layer 5 and the subsequent layer 6) are coated and printed on the production line. However, since the effect of preventing the adhesion of the hard coating layer 3 of the polytetrafluoroethylene powder is high, the hard coating layer 3 may be applied after the hard coating layer 3 is applied. Winding is carried out for temporary storage.

Further, by adding a metal soap such as polyethylene wax or zinc stearate to the hard coat layer 3, the abrasion resistance of the hard coat layer 3 can be improved. However, since the addition of the metal soap is not more than 10 times as much as the addition amount of the polytetrafluoroethylene powder, a remarkable effect cannot be seen, or a large particle diameter is often large, so that a hard coating layer is likely to be formed. The hardness of 3 is lowered and the transparency is lowered, which becomes inappropriate.

By adding a small amount of a polyisocyanate compound to the hard coat layer 3, crosslinking can be carried out to increase the toughness of the film and reduce the powder falling of the foil (foil peeling in the production step). However, depending on the amount of addition of the polyisocyanate compound, the peeling is poor, or it is a cause of burrs or nicks (short circuits), and the pencil hardness and the steel wool are also deteriorated. The result. Therefore, the amount of the polyisocyanate compound to be added is preferably in the range of 5% by weight or less based on the acryl acrylate resin.

Next, the third and fourth figures will be described. Fig. 3 is a cross-sectional view showing another example of the layer structure of the transfer film for decoration of the embodiment of the present invention. As shown in Fig. 3, the transfer film of the present embodiment includes the support film 1, the release layer 2, the first hard coat layer 8, the second hard coat layer 9, the primer layer 4, and the decoration in this order. A laminate of layer 5 and subsequent layer 6. In addition, Fig. 4 is a cross-sectional view showing a layer structure of a molded article for transfer printing of the decorative sheet of Fig. 3, which is a cross-sectional view of a molded article of the transfer film for decoration of the embodiment. As shown in Fig. 4, the molded article is formed on the molding resin 7 in this order, including the adhesive layer 6, the decorative layer 5, the primer layer 4, the second hard coat layer 9, and the first hard coat layer 8. .

The transfer film for decoration shown in Fig. 3 differs from the transfer film for decoration shown in Fig. 1 in that the first hard coat layer 8 and the second hard coat layer 9 are provided. Then, the first hard coat layer 8 and the second hard coat layer 9 will be described next.

The first hard coat layer 8 is an ultraviolet curable composition that does not adhere to the ultraviolet curable composition, and the ultraviolet curable composition contains at least a acryl acrylate resin having a weight average molecular weight of 40,000 to 100,000 and containing a hydroxyl group, and ultraviolet rays. The initiator, the cerium oxide particles having an average particle diameter of 10 nm or more and 100 nm or less, and the polytetrafluoroethylene powder having an average particle diameter of 1 μm or more and 10 μm or less, and no polyisocyanate compound.

Further, the second hard coat layer 9 is an ultraviolet curable composition which does not adhere, and the ultraviolet curable composition contains at least a propylene acrylate resin having a weight average molecular weight of 40,000 or more and containing a hydroxyl group. An ultraviolet ray initiator, a cerium oxide particle having an average particle diameter of 10 nm or more and 100 nm or less, and a polyisocyanate compound, and no polytetrafluoroethylene powder.

As described above, the hard coat layer of the present embodiment can be composed of two or more layers. In this case, as described above, the first hard coat layer 8 adjacent to the release layer 2 preferably contains a polytetrafluoroethylene powder and does not contain a polyisocyanate compound. Further, the second hard coat layer 9 adjacent to the first hard coat layer 8 preferably contains no polytetrafluoroethylene powder and contains a polyisocyanate compound. This is due to the following three reasons.

The reason for the first point is as follows.

When the coating liquid for a hard coating layer is applied and dried on the release layer 2, the nano cerium oxide particles contained in the hard coating layer are eccentrically-located on the opposite side of the release layer 2 (that is, The tendency of the atmosphere). Therefore, the side of the outermost surface after the transfer is small, and the nano cerium oxide particle component is small, and as a result, the steel wool resistance or the pencil hardness cannot be improved. Then, by dividing the hard coat layer into two or more layers and thinning the first hard coat layer 8 which becomes the outermost layer as much as possible, the influence of the segregation of the nano cerium oxide particles can be reduced.

The reason for the second point is as follows.

In order to improve the adhesion between the hard coat layer and the primer layer 4, it is preferred to add a polyisocyanate compound to the hard coat layer, but if a polyisocyanate compound is added to the hard coat layer of the release layer 2, the stripping is performed. Sex (Adhesion to the release layer) may change over time, or may cause peeling defects during transfer. In addition, when a polyisocyanate compound is added to the first hard coat layer 8 which becomes the outermost surface after the transfer, the radical reactivity of the ultraviolet curable resin is impaired, and the surface hardness (especially the steel wool resistance) is lowered. Therefore, by adding a polyisocyanate compound to the first hard coat layer 9 on the side of the primer layer 4 without adding a polyisocyanate compound to the first hard coat layer (the outermost layer) 8 bonded to the release layer 2, the hardness can be obtained. A transfer film that is balanced with adhesion.

The reason for point 3 is as follows.

When the primer layer 4 is topcoated on the hard coat layer containing the polytetrafluoroethylene powder, the primer layer is bounced off with the coating liquid or the interlayer adhesion is insufficient. Therefore, by adding a polyvinyl fluoride powder to the first hard coat layer 8 and setting the second hard coat layer 9 containing no polyvinyl fluoride powder to a coating amount larger than that of the first hard coat layer 8, the primer is applied. The layer coating liquid is prevented from being bounced off and the adhesion is improved.

Here, the content of the polytetrafluoroethylene powder contained in the first hard coat layer 8 is preferably 0.1% by weight or more based on the acryl acrylate resin contained in the first hard coat layer 8 Within the range of % by weight or less.

Moreover, it is preferable that the content of the cerium oxide particles contained in the first hard coat layer 8 and the second hard coat layer 9 is based on the propylene contained in the first hard coat layer 8 and the second hard coat layer 9 The acrylate resin is in a range of 10% by weight or more and 40% by weight or less, respectively.

The thickness of the first hard coat layer 8 is preferably in the range of 0.5 μm or more and 2.5 μm or less, and the thickness of the second hard coat layer 9 is preferably in the range of 3.0 μm or more and 8.0 μm or less.

In the case where the thickness of the first hard coat layer 8 is less than 0.5 μm, it is not easy to hold the polytetrafluoroethylene powder, and there is a risk of contaminating the guide roll of the coating device or holding the press roll. Further, when the thickness of the first hard coat layer 8 is more than 2.5 μm, the effect of the countermeasure against the unevenness of the nano cerium oxide particles is lowered.

When the thickness of the second hard coat layer 9 is less than 3.0 μm, the thickness of the entire layer of the hard coat layer including the first hard coat layer 8 is reduced, and it is not possible to sufficiently exhibit the hardness due to oxygen interference or the like. The hardness of the coating layer. Further, the effect of preventing the bounce of the coating liquid for the primer layer is also reduced. In the case where the second hard coat layer 9 is larger than 8.0 μm, not only the cost is increased, but also the squeezing is liable to occur because the toughness is excessively strong.

Since the thickness of the first hard coat layer 8 is thin, it is possible to increase the blending amount of the nano cerium oxide particles compared to the case where the hard coat layer is formed by one layer, and the transparency can be slightly lowered, but it is also possible. A nano-alumina particle having a high effect on steel wool resistance is added.

Further, the acryl acrylate resin is obtained by further suspending a (meth) acryl oxime group in a (meth)acrylic copolymer of a copolymer containing various (meth) acryl fluorenyl monomers. The radical-reactive polymer can be found to have various coating film properties by changing the kind and ratio of the copolymerized (meth) acrylonitrile-based monomer. In general, the low molecular weight molecular weight of the urethane acrylate, epoxy acrylate, polyester acrylate or the like used in the ultraviolet curable resin is from several hundred to several thousands, and the acryl acrylate resin The coefficient is from a few thousand to several hundred thousand, and has different characteristics such as low shrinkage or non-adhesiveness when not hardened.

The monomer component constituting the acryl acrylate resin is a monomer such as ethyl (meth)acrylate, ethylhexyl (meth)acrylate, styrene, methylstyrene or N-vinylpyrrolidone. Polyfunctional monomer, trimethylolpropane (meth) acrylate, hexane diol (meth) acrylate, diethylene glycol (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol Hexa(meth)acrylate, 1,6-hexanediol di(meth)acrylate, pentaerythritol (meth)acrylate, and the like.

Here, the polyisocyanate compound means toluene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), benzodimethyl diisocyanate (XDI), hexamethylene diisocyanate (HDI), isophorone II. Isocyanate (IPDI), and prepolymers of these.

Further, the ultraviolet ray initiator is an initiator which generates a radical by ultraviolet rays, and as a blender in the present embodiment, for example, diphenyl ketone, diethyl-9-oxydibenzothiophene Butyl, benzyl dimethyl ketal, 2-hydroxy-2-methyl-1-phenylpropan-1-one, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1-[4-(A Thio)phenyl]-2-morpholinepropane-1, decylphosphine oxide, and the like. The ultraviolet initiator is not particularly limited, and may be selected in accordance with the wavelength of the irradiation light of the ultraviolet irradiation device used when the hard coating layer 3 is cured. The amount of the ultraviolet initiator to be added varies depending on the type of the ultraviolet initiator, but is preferably in the range of 1% by weight to 10% by weight based on the acryl acrylate resin.

(primer layer 4)

The primer layer 4 is used to maintain a close contact between the hard coat layer 3 (or the second hard coat layer 9) and the finish layer 5, and the inventors have found that it is preferable to contain acrylic acid. Polyol resin, A resin containing a hydroxyl group of vinyl chloride vinyl acetate copolymerized resin and a polyisocyanate compound. More specifically, the primer layer 4 is a two-liquid curable resin containing at least an acrylic polyol resin, a polyisocyanate compound, and a resin composed of a vinyl chloride vinyl acetate copolymer resin containing a hydroxyl group. . Further, by adding a body pigment such as cerium oxide, barium sulfate or calcium carbonate to the primer layer 4, the wall property of the coating liquid for a decorative layer can be improved. Moreover, since the burrs can be reduced, it is most preferable to add the above-mentioned extender pigment in the range of 5% by weight or more and 20% by weight or less based on the acrylic polyol resin.

When the glass transition temperature is less than 50 ° C, the acrylic polyol resin is liable to be burred, and when the glass transition temperature is more than 90 ° C, it is difficult to make adhesion to the hard coat layer 3 difficult. Therefore, it is preferable that the acrylic polyol resin used in the present embodiment has a glass transition temperature of 50 ° C or more and 90 ° C or less.

The vinyl chloride vinyl acetate copolymerized resin can be reacted with a polyisocyanate compound by using a hydroxyl group-containing vinyl chloride vinyl acetate copolymer resin modified with vinyl alcohol or hydroxyalkyl acrylate to improve adhesion. It is preferable to blend the hydroxyl group-containing vinyl chloride vinyl acetate copolymer resin in the primer layer 4 in a range of 10% by weight or more and 60% by weight or less based on the acrylic polyol resin. Further, the thickness of the primer layer 4 is not particularly limited, and is most preferably in the range of 0.5 μm or more and 4 μm or less.

(Adding layer 5)

The decorative layer 5 is not particularly different from the above-mentioned layers. As a decoration technique that can be used in the formation of the decorative layer 5 Of course, there is a general printing using a colored coating liquid, and special printing such as pearl or fluorescent, mirror, re-retroreflection, magnetic printing, etc., and unevenness by thermal energy or ultraviolet light (various lenses) The embossing process of the effect or hologram), the formation of a film of aluminum, silver, chromium, titanium oxide, zinc sulfide, etc. by vacuum vapor deposition or sputtering.

The decorative layer 5 is usually two or more layers, for example, in an ink pattern printing layer/white suppression layer, a nacre/ink printing layer, a red pattern printing layer/mirror ink layer, a blue pattern/embossing layer/tin evaporation layer. And consider the creative situation, and such as the ink completely printed layer (adding hardener) / ink full print layer / ink full print layer, etc. to improve the quality of the print off and the separation function (in this case means both Adhesiveness and burrs, etc., can be selected in accordance with various requirements.

(Next layer 6)

As the adhesive layer 6, a conventional heat-sealing adhesive or an adhesive can be used. Examples of the adhesive layer 6 include a vinyl acetate resin, an ethylene vinyl acetate copolymer resin, a vinyl chloroacetate resin, an acrylic resin, a butyral resin, an epoxy resin, a polyester resin, and a polyurethane resin. A propylene-based adhesive, a rubber-based adhesive, a polyoxygen-based adhesive, or a urethane-based adhesive. Further, the thickness of the subsequent layer 6 is most preferably in the range of 0.5 μm or more and 10 μm or less.

In the method of forming each layer of the present embodiment, an existing coating/printing method can be employed. As a method of forming each layer of the present embodiment, for example, direct gravure printing, reverse gravure printing, micro gravure printing, roll coating, curtain coating, die coating, spray coating, wire coating, comma coating, sieve Screen printing, elastic panel printing, etc. Although the drying conditions of the coating liquid are also based on the solvent to be used, it is usually dried by drying in an environment of 80 ° C to 150 ° C for 2 to 60 seconds. However, depending on the thickness of the coating liquid and the type of the coating liquid, the residual solvent is reduced and the two-liquid hardening reaction is promoted. Therefore, it is necessary to perform additional drying for several tens of seconds by heat of 120 ° C to 180 ° C. .

The transfer film of the present embodiment is a release layer 2, a hard coat layer 3, a primer layer 4, a decorative layer 5, and the like which are formed by sequentially coating the above-described composition by the above-described coating and printing method. Manufactured from each layer of layer 6.

The transfer film of the present embodiment manufactured in this manner can be transferred to the surface of the molded article by hot pressing of injection molding by being inserted into the mold at the time of injection molding. Further, the peeling interface is an interface between the release layer 2 and the hard coat layer 3 (or the second hard coat layer 9). After being transferred onto the surface of the molded article, the hard coating layer 3 (or the second hard coat layer 9) is cured by irradiating an exposure amount of about 500 to 1,500 mJ/cm ^{2 with a} high pressure mercury lamp or a metal halide lamp. Thereby, a molded article satisfying various physical properties (steel wool test, pencil hardness, etc.) can be obtained.

Next, the present invention will be specifically described by way of examples.

<Example 1>

The biaxially stretched polyester film (G440E50, manufactured by Mitsubishi Plastics Co., Ltd.) having a thickness of 50 μm was applied by micro gravure printing to dry the coating liquid for the release layer of the following formulation, and the film thickness after drying was 0.4. Mm. Then, the release layer 2 was formed by aging over a period of 5 days in an environment of 50 °C.

‧ release layer coating solution

Acrylic Polyol LC# 6560...100 parts by weight of Dongrong Chemical Company

Polyurethane modified acrylic resin FS730...20 parts by weight

20 parts by weight of isocyanate compound Coronate L made by Nippon Polyurethane Industry

Then, the coating liquid for hard coating layer of the following was applied by the microgravure printing method, and the film thickness after drying was 5.0 μm to obtain the hard coating layer 3. Then, the film is wound up. The film was stored in an environment of 40 ° C for 30 days, but no adhesion occurred.

‧ Coating solution for hard coating layer

DIC company's non-adhesive UV curing resin (added UV polymerization initiator), solid content 30%, RC29-117...100 parts by weight

Niobium dioxide (particle size 10~20nm) MEK dispersion (30% solid content) made by Nissan Chemical Co., Ltd. 20 parts by weight

Polyfluoroethylene powder L173J (particle size 7 μm, solid content 10%) made of Asahi Glass Co., Ltd. 0.3 parts by weight

Then, in the film, the coating liquid for a primer layer of the following formulation was applied as a coating liquid for a primer layer by a direct gravure printing method, and the film thickness after drying was 1.0 μm.

. Coating liquid for primer layer

Acrylic Polyol YB #7004...100 parts by weight of Dongrong Chemical Company

Hydroxyl acrylate modified vinyl chloride vinyl acetate copolymer resin manufactured by Rixin Chemical Co., Ltd. Solbin TA2...10 parts by weight

20 parts by weight of isocyanate compound Coronate L made by Nippon Polyurethane Industry

Then, printing is carried out with a coating liquid for a predetermined decorative layer, and a coating liquid for a bonding layer (K539HP adhesive varnish manufactured by Toyo Ink Co., Ltd.) is applied as a bonding layer 6 by a gravure printing method, and dried. The film thickness was 1 μm to form the adhesive layer 6.

Next, the decorated transfer film was attached to the inside of the mold of the injection molding machine, and injection molding was carried out by using a polycarbonate ‧ ABS mixture resin. Thus, a molded article to which the transfer film of the present embodiment was transferred was obtained.

<Example 2>

The biaxially stretched polyester film (G440E50, manufactured by Mitsubishi Plastics Co., Ltd.) having a thickness of 50 μm was applied by micro gravure printing to dry the coating liquid for the release layer of the following formulation, and the film thickness after drying was 0.4. Mm. Then, the release layer 2 was formed by aging over a period of 5 days in an environment of 50 °C.

‧ release layer coating solution

Acrylic Polyol LC # 6560...100 parts by weight of Dongrong Chemical Company

Polyurethane modified acrylic resin FS730...20 parts by weight

20 parts by weight of isocyanate compound Coronate L made by Nippon Polyurethane Industry

Then, the coating liquid for the first hard coat layer of the following is dried by the microgravure printing method, and the film thickness after drying is made 1.0 μm is used as the first hard coat layer 8. Then, the coating liquid for the second hard coat layer described below was dried by a gravure printing method, and the film thickness after drying was 2.0 μm. Then, the film is wound up. The film was stored in an environment of 40 ° C for 30 days, but no adhesion occurred.

‧First coating solution for hard coating layer

DIC company's non-adhesive UV curing resin (containing UV polymerization initiator), solid content 30%, RC29-117...100 parts by weight

Niobium dioxide (particle size 10~20nm) MEK dispersion (30% solid content) made by Nissan Chemical Co., Ltd. 20 parts by weight

Polyfluoroethylene powder L173J (particle size 7 μm, solid content 10%) made of Asahi Glass Co., Ltd. 0.3 parts by weight

. Coating solution for the second hard coat layer

DIC company's non-adhesive UV curing resin (containing UV polymerization initiator), solid content 30%, RC29-117...100 parts by weight

Niobium dioxide (particle size 10~20nm) MEK dispersion (30% solid content) made by Nissan Chemical Co., Ltd. 20 parts by weight

Cocoate HL...5 parts by weight of Nippon Polyurethane Industry

Then, in the film, the coating liquid for a primer layer of the following formulation was applied as a coating liquid for a primer layer by a direct gravure printing method, and the film thickness after drying was 1.0 μm.

. Coating liquid for primer layer

Acrylic Polyol YB #7004...100 parts by weight of Dongrong Chemical Company

Hydroxyl acrylate modified vinyl chloride vinyl acetate copolymer resin manufactured by Rixin Chemical Co., Ltd. Solbin TA2...10 parts by weight

Sylophobic 200...2 parts by weight of zirconia manufactured by Fuji Silicea Co., Ltd.

20 parts by weight of isocyanate compound Coronate L made by Nippon Polyurethane Industry

Then, printing is carried out with a coating liquid for a predetermined decorative layer, and a coating liquid for a bonding layer (K539HP adhesive varnish manufactured by Toyo Ink Co., Ltd.) is applied as a bonding layer 6 by a gravure printing method, and dried. The film thickness was 1 μm to form the adhesive layer 6.

Next, the decorated transfer film was attached to the inside of the mold of the injection molding machine, and injection molding was carried out by using a polycarbonate ‧ ABS mixture resin. Thus, a molded article to which the transfer film of the present embodiment was transferred was obtained.

<Comparative Example 1>

On a biaxially stretched polyester film (G440E50 manufactured by Mitsubishi Plastics Co., Ltd.) having a thickness of 50 μm, the coating liquid for the release layer of the following formulation was dried by microgravure printing, and the film thickness after drying was 0.2. Mm. Then, the release layer 2 was formed by aging over a period of 5 days in an environment of 50 °C.

‧ release layer coating solution

Acrylic Polyol LC # 6560...100 parts by weight of Dongrong Chemical Company

Polyurethane modified acrylic resin FS730...20 parts by weight

20 parts by weight of isocyanate compound Coronate L made by Nippon Polyurethane Industry

Then, the following coating liquid for hard coating layer was applied by a microgravure printing method, and the film thickness after drying was 6.0 μm to obtain the hard coat layer 3. Then, the film is wound up. When the film was stored for 30 days in an environment of 40 ° C, it was sticky and could not be used.

‧ Coating solution for hard coating layer

DIC company's non-adhesive UV curing resin (containing UV polymerization initiator), solid content 30%, RC29-117...100 parts by weight

Niobium dioxide (particle size 10~20nm) MEK dispersion (30% solid content) made by Nissan Chemical Co., Ltd. 30 parts by weight

10% by weight of isocyanate compound manufactured by Nippon Polyurethane Industry

Then, in the film, the coating liquid for a primer layer of the following formulation was applied as a coating liquid for a primer layer by a direct gravure printing method, and the film thickness after drying was 1.0 μm.

‧coating solution for primer layer

Acrylic Polyol YB #7004...100 parts by weight of Dongrong Chemical Company

Hydroxyl acrylate modified vinyl chloride vinyl acetate copolymer resin manufactured by Rixin Chemical Co., Ltd. Solbin TA2...10 parts by weight

Sylophobic 200...2 parts by weight of zirconia manufactured by Fuji Silicea Co., Ltd.

20 parts by weight of isocyanate compound Coronate L made by Nippon Polyurethane Industry

Then, printing is carried out with a coating liquid for a predetermined decorative layer, and a coating liquid for a bonding layer (K539HP adhesive varnish manufactured by Toyo Ink Co., Ltd.) is applied as a bonding layer 6 by a gravure printing method, and dried. The film thickness was 1 μm to form the adhesive layer 6.

Next, the decorated transfer film was attached to the inside of the mold of the injection molding machine, and injection molding was carried out by using a polycarbonate ‧ ABS mixture resin. In this manner, a molded article of the transfer film of the comparative example of the present invention was obtained.

<Comparative Example 2>

On a biaxially stretched polyester film (G440E50, manufactured by Mitsubishi Plastics Co., Ltd.) having a thickness of 50 μm, the coating liquid for the release layer of the following formulation was dried by microgravure printing to make the film thickness after drying to 0.6. Mm. Then, the release layer 2 was formed by aging over a period of 5 days in an environment of 50 °C.

‧ release layer coating solution

Acrylic Polyol LC # 6560...100 parts by weight of Dongrong Chemical Company

Polyurethane modified acrylic resin FS730...20 parts by weight

20 parts by weight of isocyanate compound Coronate L made by Nippon Polyurethane Industry

Then, the following coating liquid for hard coating layer was applied by a microgravure printing method, and the film thickness after drying was 6.0 μm to obtain the hard coat layer 3. Then, the film is wound up.

‧ Coating solution for hard coating layer

DIC company's non-adhesive UV curing resin (containing UV polymerization initiator), solid content 30%, RC29-117...100 parts by weight

Niobium dioxide (particle size 10~20nm) MEK dispersion (30% solid content) made by Nissan Chemical Co., Ltd. 20 parts by weight

Then, an acrylic polyol/isocyanate-based coating liquid (V425 fixed anchor made by Toyo Ink Co., Ltd.) was applied to the film by a gravure printing method, and the film thickness after drying was 2 μm. Paint layer 4. Then, printing is carried out with a coating liquid for a predetermined decorative layer, and a coating liquid for a bonding layer (K539HP adhesive varnish manufactured by Toyo Ink Co., Ltd.) is applied as a bonding layer 6 by a gravure printing method, and dried. The film thickness was 1 μm to form the adhesive layer 6.

Next, the decorated transfer film was attached to the inside of the mold of the injection molding machine, and injection molding was carried out by using a polycarbonate ‧ ABS mixture resin. In this manner, a molded article of the transfer film of the comparative example of the present invention was obtained.

The molded article obtained in the first embodiment, the second embodiment, the comparative example 1 and the comparative example 2 was irradiated with an ultraviolet light having an exposure amount of 1000 mJ/cm ² by a high-pressure mercury lamp of 120 W/cm to form a hard coat layer 3 (or the first 2 Hard coating layer 9) completely hardened. Next, the evaluation items and evaluation criteria of these molded articles are shown below.

(flash)

○: There is no burr at all.

△: There is a burr of less than 5 mm.

×: There are burrs of 5 mm or more.

(short circuit)

○: There is no short circuit at all.

△: There is a short circuit of less than 5 mm.

×: There is a short circuit of 5 mm or more.

(rupture)

○: No cracking.

×: There is a crack.

(alluvial overflow)

○: There is no alluvial overflow at all.

△: There is an alluvial overflow of less than 1 mm.

×: There is an overflow of 1 mm or more.

(flow pattern)

○: The trace of the flow cannot be confirmed.

×: The trace of the flow can be confirmed.

(whitening)

○: Smooth on the surface.

×: No smoothness on the surface.

(interlayer peeling)

○: No peeling.

×: There is peeling.

(adhesion test)

This test is an adhesion cross-cutting method according to JIS K5600-5-6.

○: No peeling at all.

△: The state of peeling was 2 or less.

×: The state of peeling is 3 or more.

(pencil hardness test)

This test is in accordance with JIS K5600-5-4.

(steel wool grinding)

The surface of the steel wool of #0000 was rubbed five times with a load of 500 g/cm ² and a speed of 30 mm/sec by visual observation, and the evaluation was carried out by the following ○-×.

○: There is almost no visible scar.

△: The scar is 20 or less.

×: I saw a white scattered surface.

(RCA wear test)

This test is in accordance with ASTM F2357-04.

After counting 200 times by a continuous test of 175 g load, observation was carried out by visual observation, and evaluation was performed by the following ○~×.

○: There is almost no visible scar.

△: Cutting was performed, but it was not exposed to the bottom layer.

×: The bottom layer is exposed.

The evaluation results of the respective examples and comparative examples are shown in Table 1.

As can be seen from the results of Table 1, Example 1 and Example 2, which are examples of the embodiment of the present invention, exhibit excellent balance performance in each evaluation item.

[Industrial availability]

The transfer film obtained by the present invention can be used for surface protection and decoration of a casing, a panel member, and the like which are used in home electric appliances, home appliances, business equipment, automobile parts, and the like.

1‧‧‧Support film

2‧‧‧ release layer

3‧‧‧hard coating layer

4‧‧‧primer layer

5‧‧‧Adding layer

6‧‧‧Next layer

Claims (8)

A transfer film for decoration, which is a transfer film for decoration in a form which is hardened by ultraviolet rays after transfer, and is characterized in that the transfer film for decoration is made to be on the side of one side of the support film Forming the release layer, the hard coat layer, the primer layer, the decorative printed layer and the adhesive layer in this order; making the composition of the hard coat layer a tack free ultraviolet curing type composition, The ultraviolet curable composition contains at least a acryl acrylate resin having a weight average molecular weight of 40,000 or more and 100,000 or less and a hydroxyl group-containing acryl acrylate resin, and an average particle diameter of 10 nm or more and 100 nm or less. The cerium oxide particles in the range and the polytetrafluoroethylene powder having an average particle diameter of 1 μm or more and 10 μm or less; the composition of the primer layer is a two-liquid curing resin, and the two-liquid curing resin is at least The invention comprises an acrylic polyol resin, a polyisocyanate compound, and a vinyl chloride vinyl acetate copolymer resin containing a hydroxyl group. The transfer film for decorative decoration according to claim 1, wherein the content of the polytetrafluoroethylene powder contained in the hard coat layer is 0.1% by weight or more and 2% by weight or less based on the acryl acrylate resin. Within the scope. The transfer film for decoration of claim 2, wherein the content of the cerium oxide particles contained in the hard coat layer is in a range of 10% by weight or more and 40% by weight or less based on the acryl acrylate resin. Inside. The transfer film for decoration according to any one of claims 1 to 3, wherein the hard coat layer further comprises a polyisocyanate compound. A transfer film for decoration, which is a transfer film for decoration in a form which is hardened by ultraviolet rays after transfer, and is characterized in that the transfer film for decoration is made to be on the side of one side of the support film The layered release layer, the first hard coat layer, the second hard coat layer, the primer layer, the decorative printed layer, and the adhesive layer are laminated in this order; the composition of the first hard coat layer is made non-adhered The ultraviolet curable composition contains at least a propylene acrylate resin having a weight average molecular weight of from 40,000 to 100,000 and containing a hydroxyl group, an ultraviolet initiator, and an average particle diameter of 10 nm or more. The cerium oxide particles in the range of 100 nm or less and the polytetrafluoroethylene powder having an average particle diameter of 1 μm or more and 10 μm or less, and no polyisocyanate compound; the composition of the second hard coat layer is not adhered An ultraviolet curable composition containing at least a propylene acrylate resin having a weight average molecular weight of from 40,000 to 100,000 and containing a hydroxyl group; a UV initiator, a cerium oxide particle having an average particle diameter of 10 nm or more and 100 nm or less, and a polyisocyanate compound, and no polytetrafluoroethylene powder; and the composition of the primer layer is a two-liquid curing resin. The two-liquid curing resin contains at least an acrylic polyol resin, a polyisocyanate compound, and a vinyl chloride vinyl acetate copolymer resin containing a hydroxyl group. The transfer film for decorative decoration according to claim 5, wherein the layer thickness of the first hard coat layer is in a range of 0.5 μm or more and 2.5 μm or less, and the layer thickness of the second hard coat layer is 3.0 μm or more and 8.0 μm. Within the scope below. The transfer film for decoration of claim 5 or 6, wherein the content of the polytetrafluoroethylene powder contained in the first hard coat layer is relative to the acryl acrylate contained in the first hard coat layer The resin is in the range of 0.1% by weight or more and 2% by weight or less. The transfer film for decoration according to any one of claims 5 to 7, wherein the content of the cerium oxide particles contained in the first hard coat layer and the second hard coat layer is included in the first The hard coat layer and the acryl acrylate resin of the second hard coat layer are each in a range of 10% by weight to 40% by weight.