TW201604037A - Transfer film and transfer molded article using same - Google Patents

Abstract

Provided are: a transfer film which is able to be produced with stable glossiness and is capable of controlling the surface glossiness of a transfer-receiving body, while maintaining insusceptibility to reflection of fluorescent light and the like on the surface of a molded article (non-image-reflecting properties); and a transfer molded article which uses this transfer film. A transfer film (200) according to the present invention is obtained by sequentially laminating at least a matte layer (2), a matte mold release layer (3), a hard coat layer (4) and an adhesive layer (7) on one surface of a base film (1). The matte layer (2) contains from 4.0 parts by mass to 20.0 parts by mass (inclusive) of a filler per 100 parts by mass of the materials that constitute the matte layer (2). In addition, the matte mold release layer (3) contains from 0.5 part by mass to 20.0 parts by mass (inclusive) of a filler per 100 parts by mass of a resin that constitutes the matte mold release layer (3).

Description

Transfer film and transfer molded article using the same

The present invention relates to a transfer film and a transfer molded article using the same.

A transfer film which can impart a matte appearance to the surface of the object to be transferred is disclosed, for example, in Patent Document 1.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2000-108594

However, the transfer film of the prior art is difficult to produce with stable gloss, and it is difficult to simultaneously control the surface glossiness of the transfer target while maintaining good image inconspicuousness.

The present invention is intended to solve such a problem, and provides a transfer film which can be produced with stable gloss and which can maintain good image unclearness while controlling the surface glossiness of the transferred body and using the same. The transfer molded article is for the purpose.

The present invention has been made in order to solve the above problems, and is achieved by the following means: a transfer film according to an aspect of the present invention is a mat layer formed on at least one side of a substrate film, a transfer film comprising a matte release layer, a hard coat layer, and a backing layer, wherein the matte layer is 4.0 parts by mass or more and 20.0 parts by mass or less based on 100 parts by mass of the resin constituting the matte layer. A filler is contained in the range, and the matte release layer is characterized in that it contains a filler in a range of 0.5 part by mass or more and 20.0 parts by mass or less based on 100 parts by mass of the resin constituting the matte release layer.

Further, another aspect of the present invention is a transfer molded article obtained by using the transfer film of the above aspect.

According to the transfer film of one aspect of the present invention, since the matte release layer is formed on the surface of the matte layer, a rough surface appearance can be imparted to the surface of the transfer target. Further, by adjusting the filler content (filler addition amount) of the matte layer or the matte release layer, the surface glossiness of the transfer target can be easily controlled. In this case, the amount of the filler of the matte layer is maintained in a range of 4.0 parts by mass or more and 20.0 parts by mass or less based on 100 parts by mass of the resin constituting the matte layer, and can be maintained even at high gloss. Imaging is not clear. In addition, by adding the amount of the filler of the matte release layer to the range of 0.5 part by mass to 20.0 parts by mass based on 100 parts by mass of the resin constituting the matte release layer, the matte release can be suppressed. The influence of the film thickness of the layer on the surface glossiness of the transfer target.

From the above, the transfer film according to one aspect of the present invention can be produced with stable gloss and can maintain good imaging. It is not clear, and at the same time, the surface gloss of the transferred body can be controlled.

1‧‧‧Substrate film

2‧‧‧Face layer

3‧‧‧Mask release layer

4‧‧‧hard coating

5‧‧‧primer layer

6‧‧‧Decorative layer

7‧‧‧Next layer

8‧‧‧Forming resin

100‧‧‧Mao surface release film

101‧‧‧Transfer layer

200‧‧‧Transfer film

201‧‧‧Transfer molded products

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

Fig. 2 is a schematic cross-sectional view showing the structure of a transfer molded article obtained by using the transfer film of the embodiment of the present invention.

[Formation of the Invention]

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same reference numerals will be given to the components that perform the same or similar functions, and the repeated description will be omitted. Further, in the present embodiment, the average particle diameter of each of the added particles is a value measured by a laser diffraction method. In the following detailed description, numerous specific details are set forth However, it is to be understood that one or more embodiments can be implemented without the specific details described above. In addition, well-known structures and devices are schematically illustrated in order to simplify the drawings.

The matte transfer transfer film of the present embodiment (hereinafter also referred to simply as "transfer film") 200 is a first layer of a base film 1, a matte layer 2, and a matte release layer as shown in Fig. 1 . 3. A laminate of the hard coat layer 4 and the subsequent layer 7.

When the transfer film 200 is to be patterned, a decorative layer 6 may be provided between the hard coat layer 4 and the adhesive layer 7. Here, the decorative layer 6 is mostly a plurality of layers. In addition, for example, embossing or pearling may be added to the decorative layer 6. Decorative materials with optical effects such as materials. Moreover, when the decorative layer 6 is provided, when the decorative layer 6 has sufficient adhesiveness to the molding resin 8, the decorative layer 6 can also serve as the adhesive layer 7.

(substrate film)

As the base film 1, for example, a polyethylene terephthalate film, a polyethylene naphthalate film, a polypropylene film, a polyethylene film, a cellulose triacetate film, a polycarbonate film, a nylon film, or the like can be used. Substrate such as cellophane film, acrylic film, vinyl chloride film. The thickness of the base film 1 is preferably in the range of 25 μm or more and 250 μm or less, and is preferably in the range of 38 μm or more and 150 μm or less in terms of cost or film formability balance. Therefore, it is more suitable to use the base film. 1.

(fleece layer)

The surface of the matte layer 2 is formed with a layer of fine concavities and convexities. The filler to be added to the matte layer 2 is not particularly limited, and various inorganic particles or organic particles can be used.

The average particle diameter of the filler is preferably in the range of 0.01 μm or more and 50 μm or less, and more preferably in the range of 1 μm or more and 30 μm or less. When the average particle diameter of the filler is less than 0.01 μm, the surface of the molded article cannot be sufficiently imparted with a matte finish; when it is larger than 50 μm, it becomes a cause of pinholes in each printing step, which is not preferable. Since the thickness of the matte layer 2 must be kept only for the thickness of the filler contained therein, it is necessary to appropriately set the particle diameter of the filler. For example, when a filler having a particle diameter of about 2 μm is used, the thickness of the matte layer 2 is preferably about 3 to 4 μm.

Since the amount of the filler added to the matte layer 2 greatly affects the image inconspicuousness, it must be determined rigorously. When the matte layer 2 contains When the amount of the filler is small, the image formation of the molded article tends to be unsatisfactory. Therefore, it is necessary to take 4.0 parts by mass or more with respect to 100 parts by mass of the resin which is a main component of the coating film constituting the matte layer 2. The reason for this is that when the amount of the filler contained in the matte layer 2 is small, the unevenness of the surface of the matte release film 100 is reduced. On the other hand, when the amount of the filler of the matte layer 2 is more than 20.0 parts by mass based on 100 parts by mass of the resin which is a main component of the coating film of the matte layer 2, sedimentation and aggregation of the filler may occur. An ink for forming a matte layer is produced. Further, the above-mentioned matte release film 100 is a laminate in which at least a base film 1, a matte layer 2, and a matte release layer 3 are laminated at least.

The resin material constituting the main component of the coating film of the matte layer 2 preferably has adhesion to the base film 1, heat resistance, and adhesion to the matte release layer 3 to be described later. A two-liquid hardening type urethane urethane resin, a two-liquid hardening type polyester urethane resin, or a mixture thereof. In the case of the two-liquid-curing urethane resin, the curing reaction is completed at a low temperature of about room temperature (20 ° C) to 50 ° C, so that the base film 1 can be reduced when the matte layer 2 is formed. Heat load.

In addition, the matte layer 2 may contain, for example, an acrylic resin having a long-chain alkyl group having a carbon number of 10 or more and 30 or less, or an acrylic acid-containing resin containing a hydroxyl group for the purpose of improving the mold release property.

Further, the matte layer 2 may contain, for example, a cellulose derivative containing a hydroxyl group in order to enhance the heat resistance. The reason why the heat resistance is improved in this way is that when the transfer layer 101 is transferred to the transfer target, the heating may be excessively performed. For example, a method of performing transfer simultaneously with injection molding ( In the in-mold forming, heat of about 160 ° C is applied to the surface of the transfer film 200. Therefore, for the matte layer 2 of the transfer film 200, it is preferred to previously blend a cellulose derivative containing a hydroxyl group to improve heat resistance. Examples of the cellulose derivative containing a hydroxyl group include nitrocellulose, cellulose acetate butyrate, and cellulose acetate propionate. The blending amount of the cellulose derivative is preferably in the range of 20 parts by mass or more and 100 parts by mass or less based on 100 parts by mass of the resin material which is a main component of the coating film constituting the matte layer 2 . If it is in this range, sufficient heat resistance can be given to the matte layer 2. Further, the transfer layer 101 described above refers to a laminate in which at least the hard coat layer 4 and the subsequent layer 7 are laminated in this order.

(Mao surface release layer)

The matte release layer 3 has a layer having fine retraction and a release property. The filler to be added to the matte release layer 3 is not particularly limited as in the case of the matte layer 2, and various inorganic particles or organic particles can be used.

The average particle diameter of the filler is preferably in the range of 0.01 μm or more and 50 μm or less, and more preferably in the range of 1 μm or more and 30 μm or less. When the average particle diameter of the filler is less than 0.01 μm, the surface of the molded article is not sufficiently provided with a matte finish, and when it is larger than 50 μm, it is a cause of pinholes in each printing step, which is not preferable. The thickness of the matte release layer 3 may be determined by considering the average particle diameter of the filler to be used and the surface glossiness of the transfer target after transfer. However, when the thickness of the matte release layer 3 is more than 5 μm, the matte feeling generated by the filler contained in the matte layer 2 cannot be sufficiently provided.

The amount of the filler added to the matte release layer 3 of the present embodiment is relative to the resin which is the main component of the coating film constituting the matte release layer 3. 100 parts by mass is required to be 0.5 parts by mass or more and 20.0 parts by mass or less. When the amount of the filler of the matte release layer 3 is less than 0.5 part by mass with respect to 100 parts by mass of the resin which is a main component of the coating film constituting the matte release layer 3, the film thickness of the release layer 3 with the matte side The change in gloss due to the change is large, and unevenness in gloss is likely to occur at the time of coating, and the appearance of the transfer molded article 201 is significantly impaired. On the other hand, when the amount of the filler of the matte release layer 3 is more than 20.0 parts by mass based on 100 parts by mass of the resin which is a main component of the coating film of the matte release layer 3, sedimentation of the filler is caused. It is not possible to form an ink for forming a matte release layer. In addition, the transfer molded article 201 is formed by transferring the transfer layer 101 to the molding resin 8 as shown in Fig. 2 .

The matte release layer 3 is a layer mainly composed of an urethane urethane resin containing a long-chain alkyl group having 10 or more and 30 or less carbon atoms. Further, the urethane urethane resin is characterized in that it is produced by at least an acrylic polyol resin, an acrylic resin containing a hydroxyl group and a long-chain alkyl group having 10 or more and 30 or less carbon atoms, and a crosslinking reaction with an isocyanate compound. Resin. By using an urethane urethane resin having a long-chain alkyl group having such a carbon number range, excellent release property can be exhibited at the time of thermal transfer, and application to the matte release layer 3 does not occur. The upper hard coat layer forms a fisheye phenomenon of the ink, and a uniform hard coat layer 4 can be formed. In addition, when the carbon number of the alkyl group is less than 10, the mold release property at the time of thermal transfer is insufficient, and uneven transfer occurs on the surface of the transfer target to cause deterioration in quality. Further, when the carbon number of the alkyl group is more than 30, fish eyes are formed when the above-mentioned ink for forming a hard coat layer is applied, and a uniform hard coat layer 4 cannot be formed.

Acrylic urethane resin forming matte release layer 3 It can be obtained, for example, from an ink composition comprising an acrylic polyol resin and an alkyl isocyanate containing a long-chain alkyl group, or an ink composition comprising an acrylic resin having a long-chain alkyl group and a hydroxyl group and an isocyanate compound. In addition, the matte release layer 3 is required to have properties such as mold release property, elongation property, heat resistance, and the like, and may be finely adjusted depending on the shape of the transfer target or the processing conditions at the time of transfer. For example, an ink composition containing an acrylic resin containing a long-chain alkyl group and a hydroxyl group and an isocyanate compound may be blended, for example, an acrylic polyol resin or an urethane acrylate resin to adjust the ink composition. A matte release layer 3 is formed. By adjusting the ink composition in this manner, the properties such as mold release property, elongation property, and heat resistance of the matte release layer 3 can be adjusted. In addition, the recommended blending amount of the acrylic resin containing a long-chain alkyl group and a hydroxyl group is preferably in the range of 2 parts by mass or more and 30 parts by mass or less based on 100 parts by mass of the acrylic polyol resin, and is not particularly limited.

The matte release layer 3 in the present embodiment contains a cured resin containing at least an acrylic polyol resin, an acrylic resin containing a long-chain alkyl group and a hydroxyl group, and an ink composition of an isocyanate compound as a main component. In order to harden the ink composition, it is not necessary to carry out a baking step at a high temperature (about 180 to 200 ° C) like a melamine resin, and the curing reaction is completed at a temperature of about room temperature (20 ° C) to 50 ° C. As described above, according to the present embodiment, the matte release layer 3 can be formed by low-temperature curing. Therefore, the base film which is low in heat resistance which cannot be used under the curing conditions when the release layer is formed of the melamine resin can be used without causing defects such as wrinkles, heat shrinkage, and crystallization. Examples of such a base film include an unstretched PET film, a vinyl chloride film, a PET-G film, and the like, due to elongation thereof. Higher, it is expected to exhibit excellent followability to the three-dimensional shape of the formed article. In the present embodiment, even when such a base film is used, it can be preferably used.

For the purpose of improving the heat resistance when the transfer film 200 is used for in-mold forming, the matte release layer 3 may be blended with a cellulose derivative containing a hydroxyl group in the same manner as the matte layer 2. Examples of the cellulose derivative containing a hydroxyl group include nitrocellulose, cellulose acetate butyrate, and cellulose acetate propionate. The amount of the cellulose derivative to be added is preferably 20 parts by mass or more and 100 parts by mass or less based on 100 parts by mass of the acrylic polyol resin which is a resin component which is a main component of the coating film of the matte release layer 3 . In the range. If it is in this range, sufficient heat resistance can be given to the matte release layer 3.

In addition, when the hard coat layer 4 containing a highly polar functional group such as a urethane bond in the layered molecule or the high speed at the time of peeling is performed, it is required to perform the peeling of the matte release layer 3 more gently. At this time, by blending the hydroxyl group-containing acrylic acid oxy-resin, peeling can be performed gently without lowering the surface coating property. The blending amount of the hydroxy group-containing acrylate resin is 0.5 parts by mass or more and 15 parts by mass based on 100 parts by mass of the acrylic polyol resin which is a resin component which is a main component of the coating film of the matte release layer 3 . It is appropriate in the following range, whereby the release property of the matte release layer 3 can be improved.

(hard coating)

The hard coat layer 4 preferably includes a non-adhesive state in a transfer film 200 before transfer (a state in which only the solvent is evaporated to cause viscous to disappear), after being transferred to the transfer target body By irradiating ultraviolet rays or electron beams A resin that is crosslinked by an active energy ray. The reason why the active energy ray is irradiated after the transfer to crosslink is to transfer the transfer film 200 using the hard coat layer 4 having the pre-crosslinked state, and the transfer film 200 is to follow the transfer target. The surface of the hard coat layer 4 is likely to be cracked when it is stretched, and it is a cause of poor appearance. In the transfer film 200 before transfer, as the method for making the hard coat layer 4 in a non-stick state, there are mainly the following three methods. The first method is a method of using a polymer type acrylate or methacrylate as a resin constituting the hard coat layer 4. In the second method, as the resin constituting the hard coat layer 4, in addition to the liquid or semi-liquid active energy ray-curable resin, cross-linking of an isocyanate/polyol resin or an epoxy resin/amine is also included. The reactants are moderately hardened to give a non-tacky method. In the third method, an active energy ray-curable resin is used as the resin constituting the hard coat layer 4, and an appropriate amount of active energy ray is irradiated to the active energy ray without impairing the shape followability to the transfer target. The hardening type resin is in a semi-hardened state. In the present embodiment, any method can be used.

Further, in the case of the first method, in addition to the polymer type acrylic resin, nano cerium oxide particles may be added for the purpose of complementing the surface hardness. The amount of the nano cerium oxide particles added is preferably in the range of 10 parts by mass or more and less than 40 parts by mass based on 100 parts by mass of the acrylic resin. Further, when the amount of the nano cerium oxide particles added is less than 10 parts by mass, the effect of improving the surface hardness is lacking, which is not preferable. On the other hand, when the amount of the nano cerium oxide particles added is 40 parts by mass or more, the cured coating film is excessively embrittled, and the abrasion resistance is deteriorated. Further, for the nano cerium oxide particles, in order to maintain the transparency of the hard coat layer 4, it is preferred to use a particle diameter of Those in the range of 10 nm or more and less than 100 nm. Further, the nano cerium oxide particles may be applied to a surface treatment by a decane coupling agent containing an acrylonitrile group/methacryl oxime group, or may be a single untreated nano cerium oxide particle.

Further, in general, an active energy ray-curable resin tends to have insufficient abrasion resistance. Therefore, in order to compensate for the abrasion resistance, a polytetrafluoroethylene powder, a polyethylene wax, a metal soap or the like as a slip agent may be added to the above active energy ray-curable resin in a small amount.

The thickness of the hard coat layer 4 is preferably in the range of 2 μm or more and 10 μm or less in consideration of the balance between the appearance of the surface hardness and the curing shrinkage, cost, and the like, but is not particularly limited.

(primer layer)

The primer layer 5 is a layer for keeping the hard coat layer 4 in close contact with the decorative layer 6. A polyol resin including a polyester polyol resin or an acrylic polyol resin and/or a vinyl chloride containing a hydroxyl group may be used. A resin containing a hydroxyl group-containing resin and an isocyanate compound, such as a vinyl acetate resin (a copolymer of vinyl chloride and vinyl acetate). The thickness of the primer layer 5 is not particularly limited, and is preferably in the range of 0.5 μm or more and 10 μm or less.

(decorative layer)

The decorative layer 6 is a layer for imparting design to the object to be transferred. When a printing layer is to be formed as the decorative layer 6, a coloring ink containing a pigment or dye of a suitable color as a coloring agent can be used, and a known printing method such as a lithography method, a gravure printing method, a screen printing method, an inkjet method, or the like can be used. To form. As another decorative technique that can be applied, special printing such as pearl or fluorescent, mirror, retroreflective, magnetic printing, etc., by heat or ultraviolet The embossing process in which the line forms a concavo-convex structure (various lens effects or a full-phase figure), a film forming technique in which aluminum or silver, chromium, titanium oxide, zinc sulfide, or the like is formed by vacuum evaporation or sputtering.

(following layer)

As the adhesive layer 7, a well-known heat sealable adhesive or an adhesive can be used. The adhesive layer 7 may, for example, be a vinyl acetate resin, an ethylene vinyl acetate copolymer resin, a vinyl chloride-vinyl acetate resin, an acrylic resin, a butyral resin, an epoxy resin, a polyester resin, or a polyurethane. A resin, an acrylic adhesive, a rubber-based adhesive, a bismuth-based adhesive, a urethane-based adhesive, or the like. The thickness of the adhesive layer 7 is not particularly limited, and is preferably in the range of 0.5 μm or more and 10 μm or less.

(Effect of this embodiment)

(1) The transfer film 200 is formed by laminating at least one of the matte layer 2, the matte release layer 3, the hard coat layer 4, and the subsequent layer 7 on one surface of the base film 1. In addition, the matte layer 2 contains a filler in a range of 4.0 parts by mass to 20.0 parts by mass or less based on 100 parts by mass of the resin constituting the matte layer 2. In addition, the matte release layer 3 contains a filler in a range of 0.5 parts by mass to 20.0 parts by mass or less based on 100 parts by mass of the resin constituting the matte release layer 3.

According to the transfer film 200 configured as described above, since the matte release layer 3 is formed on the surface of the matte layer 2, the surface of the transfer target can be given a matte appearance, and the matte layer 2 or hair can be adjusted. The filler content (filler addition amount) of the face release layer 3 can easily control the surface glossiness of the transfer target.

At this time, by adding the amount of the filler of the matte layer 2, the phase When the amount of the resin is 100 parts by mass or more and 20.0 parts by mass or less, the image formation insensitivity can be maintained even at a high gloss. In addition, the amount of the filler of the matte release layer 3 is 0.5 parts by mass or more and 20.0 parts by mass based on 100 parts by mass of the resin, so that the film thickness of the matte release layer 3 can be reduced. The effect on the surface gloss of the transferred body.

As described above, the transfer film 200 of the present embodiment can be produced with a stable gloss, and can maintain good image unclearness while controlling the surface glossiness of the object to be transferred.

(2) Further, the resin constituting the matte layer 2 may be a two-liquid hardening type urethane resin. Further, the resin constituting the matte release layer 3 may be mainly composed of an urethane urethane resin, and the urethane urethane resin may be composed of at least an acrylic polyol resin, a hydroxyl group, and a carbon number of 10 or more and 30. The resin produced by the cross-linking reaction of the following long-chain alkyl acrylic resin with an isocyanate compound.

According to this configuration, since the matte layer 2 is formed of a two-liquid-curing urethane resin, the gravure printing suitability can be improved, and the curing reaction can be completed at a low temperature of about room temperature to about 50 ° C to form a base. The matte layer 2 of the material film 1 having less heat load.

Further, since the matte release layer 3 is formed of an urethane urethane resin containing a long-chain alkyl group having 10 or more and 30 or less carbon atoms, the gravure printing suitability can be improved, and the matte release layer 3 is heated. It is excellent in mold release property at the time of printing, and the fisheye phenomenon of the ink for forming a hard coat layer applied to the matte release layer 3 can be suppressed, and a uniform hard coat layer 4 can be formed. Further, the adhesion between the matte layer 2 and the matte release layer 3 can be ensured.

Further, in the transfer film 200, the matte release layer 3 contains an acrylic resin containing a hydroxyl group and a long-chain alkyl group having 10 or more and 30 or less carbon atoms, whereby mold release property and elongation property can be improved. Further, since the leveling property at the time of coating the matte release layer can be improved, a uniform matte release layer 3 can be formed.

(3) Further, the resin constituting the matte layer 2 may further contain a hydroxy acrylate resin containing a hydroxyl group.

According to this configuration, the matte release layer 3 contains a hydroxyl group-containing acrylic acid oxy-resin, and it is possible to provide excellent mold release property capable of sufficiently responding to the high speed of thermal transfer.

(4) Further, the resin constituting the matte release layer 3 may further contain a hydroxyl group-containing acryl resin.

According to this configuration, peeling of the matte release layer 3 can be performed lightly without lowering the surface coating property.

(5) Further, a decorative layer 6 may be provided between the hard coat layer 4 and the adhesive layer 7.

According to this configuration, designability can be imparted to the object to be transferred.

(6) Further, a primer layer 5 may be provided between the hard coat layer 4 and the decorative layer 6.

According to this configuration, the adhesion between the hard coat layer 4 and the decorative layer 6 can be improved.

[Examples]

Hereinafter, the present invention will be described in detail based on examples. Further, the present invention is not limited by the embodiment.

<Example 1>

A biaxially stretched polyester film (manufactured by Mitsubishi Plastics Co., Ltd.: G440E50) having a thickness of 50 μm was used as a base film, and on one side thereof, the following composition was used. The film for forming a matte layer was applied by a gravure method to have a film thickness of 4.5 μm after drying. Thus, the matte layer of Example 1 was formed.

(Composition of ink for forming a matte layer)

Acrylic polyol resin (manufactured by Toei Kasei Co., Ltd.: LC # 6560): 100 parts by weight

Cerium oxide filler (manufactured by Evonik Degussa Co., Ltd.: particle size 6 μm): 6.6 parts by weight

Isocyanate compound (manufactured by Nippon Polyurethane Co., Ltd.: CORONATE HL): 10 parts by weight

On the matte layer, the ink for forming a matte release layer having the following composition was applied by a micro-gravure method to a thickness of 2.5 μm after drying, and dried to form a matte release layer, followed by 50 ° C. The aging is carried out for 5 days. Thus, the matte release film of Example 1 was produced.

(Composition of ink for forming a matte release layer)

Acrylic polyol resin (LC # 6560, manufactured by Toei Kasei Co., Ltd.): 100 parts by weight

Cerium oxide filler (manufactured by Evonik Degussa Co., Ltd.: particle size: 6 μm): 2.7 parts by weight

Acrylic resin: 5 parts by weight

(having a hydroxyl group and a long-chain alkyl group (carbon number 18) of a copolymer of 6-hydroxyhexyl acrylate and octadecyl methacrylate)

Isocyanate compound (CORONATE L manufactured by Nippon Polyurethane Co., Ltd.): 20 parts by weight

Next, on one side of the above-mentioned matte release film, the ink for forming a hard coat layer having the following composition is applied to dry by a micro gravure method. The film thickness after the film was 5.0 μm and dried. Thus, the hard coat layer of Example 1 was formed.

(Composition of ink for forming a hard coat layer)

UV curable resin: 100 parts by weight

(RC29-117 manufactured by DIC Corporation: blended with ultraviolet polymerization initiator; solid component 30%) cerium oxide: 20 parts by weight

(Manufactured by Nissan Chemical Co., Ltd.: particle size 10~20nm, MEK dispersion, solid content 30%)

Next, on the hard coat layer, an acrylic polyol/isocyanate ink (V425 Anchor manufactured by TOYO INK Co., Ltd.) was applied as a primer layer by a gravure method to a film thickness of 1 μm after drying to form a primer layer. On the other hand, an ink (made by TOYO INK Co., Ltd.: V428UR92 ink) which is an ink for forming a decorative layer was applied, and the film thickness after drying was applied by a gravure method to a thickness of 3 μm to form a decorative layer. Further, an adhesive for forming an underlayer (KYOPH: varnish, manufactured by TOYO INK Co., Ltd.) was applied thereto to form a film having a thickness of 1 μm after drying by a gravure method. Thus, the transfer film of Example 1 was produced.

The transfer film obtained above was placed in a mold of an injection molding machine, and a polycarbonate ABS alloy resin (TECHNIACE T-105 manufactured by NIPPON A & L) was injection molded, and transferred while being molded. Thus, the molded article of Example 1 was obtained.

<Example 2>

A matte release film of Example 2 was produced in the same manner as in Example 1 except that the ink for forming a matte layer and the ink for forming a matte release layer were used.

(Composition of ink for forming a matte layer)

Acrylic polyol resin (manufactured by Toei Kasei Co., Ltd.: LC # 6560): 100 parts by weight

Cerium oxide filler (manufactured by Evonik Degussa Co., Ltd.: particle size 6 μm): 8.7 parts by weight

Isocyanate compound (manufactured by Nippon Polyurethane Co., Ltd.: CORONATE HL): 10 parts by weight

(Composition of ink for forming a matte release layer)

Acrylic polyol resin (LC # 6560, manufactured by Toei Kasei Co., Ltd.): 100 parts by weight

Cerium oxide filler (manufactured by Evonik Degussa Co., Ltd.: particle size 6 μm): 0.6 parts by weight

Acrylic resin: 5 parts by weight

(having a hydroxyl group and a long-chain alkyl group (carbon number 18) of a copolymer of 6-hydroxyhexyl acrylate and octadecyl methacrylate)

Isocyanate compound (CORONATE L manufactured by Nippon Polyurethane Co., Ltd.): 20 parts by weight

Next, on one side of the matte release film, a transfer film was formed in the same manner as in Example 1, and then transferred while being injection molded. Thus, the molded article of Example 2 was obtained.

<Example 3>

A matte release film of Example 3 was produced in the same manner as in Example 1 except that the ink for forming a matte layer and the ink for forming a matte release layer were used.

(Composition of ink for forming a matte layer)

Acrylic polyol resin (manufactured by Toei Kasei Co., Ltd.: LC # 6560): 100 parts by weight

Cerium oxide filler (manufactured by Evonik Degussa Co., Ltd.: particle size 6 μm): 4.7 parts by weight

Isocyanate compound (manufactured by Nippon Polyurethane Co., Ltd.: CORONATE HL): 10 parts by weight

(Composition of ink for forming a matte release layer)

Acrylic polyol resin (LC # 6560, manufactured by Toei Kasei Co., Ltd.): 100 parts by weight

Cerium oxide filler (manufactured by Evonik Degussa Co., Ltd.: particle size: 6 μm): 4.8 parts by weight

Acrylic resin: 5 parts by weight

(having a hydroxyl group and a long-chain alkyl group (carbon number 18) of a copolymer of 6-hydroxyhexyl acrylate and octadecyl methacrylate)

Isocyanate compound (CORONATE L manufactured by Nippon Polyurethane Co., Ltd.): 20 parts by weight

Next, on one side of the matte release film, a transfer film was formed in the same manner as in Example 1, and then transferred while being injection molded. Thus, the molded article of Example 3 was obtained.

<Comparative Example 1>

A matte release film of Comparative Example 1 was produced in the same manner as in Example 1 except that the ink for forming a matte layer and the ink for forming a matte release layer were used.

(Composition of ink for forming a matte layer)

Acrylic polyol resin (manufactured by Toei Kasei Co., Ltd.: LC # 6560): 100 parts by weight

Cerium oxide filler (manufactured by Evonik Degussa Co., Ltd.: particle size 6 μm): 9.2 parts by weight

Isocyanate compound (manufactured by Nippon Polyurethane Co., Ltd.: CORONATE HL): 10 parts by weight

(Composition of ink for forming a matte release layer)

Acrylic polyol resin (LC # 6560, manufactured by Toei Kasei Co., Ltd.): 100 parts by weight

Cerium oxide filler (manufactured by Evonik Degussa Co., Ltd.: particle size 6 μm): 0.1 parts by weight

Acrylic resin: 5 parts by weight

(having a hydroxyl group and a long-chain alkyl group (carbon number 18) of a copolymer of 6-hydroxyhexyl acrylate and octadecyl methacrylate)

Isocyanate compound (CORONATE L manufactured by Nippon Polyurethane Co., Ltd.): 20 parts by weight

Next, on one side of the matte release film, a transfer film was formed in the same manner as in Example 1, and then transferred while being injection molded. Thus, the molded article of Comparative Example 1 was obtained.

<Comparative Example 2>

A matte release film of Comparative Example 2 was produced in the same manner as in Example 1 except that the ink for forming a matte layer and the ink for forming a matte release layer were used.

(Composition of ink for forming a matte layer)

Acrylic polyol resin (manufactured by Toei Kasei Co., Ltd.: LC # 6560): 100 parts by weight

Cerium oxide filler (manufactured by Evonik Degussa Co., Ltd.: particle size 6 μm): 3.8 parts by weight

Isocyanate compound (manufactured by Nippon Polyurethane Co., Ltd.: CORONATE HL): 10 parts by weight

On the matte layer, the ink for forming a matte release layer having the following composition was applied by a micro-gravure method to a thickness of 2.5 μm after drying, and dried to form a matte release layer, followed by 50 ° C. The aging is carried out for 5 days. Thus, the matte release film of Comparative Example 2 was produced.

(Composition of ink for forming a matte release layer)

Acrylic polyol resin (LC # 6560, manufactured by Toei Kasei Co., Ltd.): 100 parts by weight

Cerium oxide filler (manufactured by Evonik Degussa Co., Ltd.: particle size 6 μm): 5.9 parts by weight

Acrylic resin: 5 parts by weight

(having a hydroxyl group and a long-chain alkyl group (carbon number 18) of a copolymer of 6-hydroxyhexyl acrylate and octadecyl methacrylate)

Isocyanate compound (CORONATE L manufactured by Nippon Polyurethane Co., Ltd.): 20 parts by weight

Next, on one side of the matte release film, a transfer film was formed in the same manner as in Example 1, and then transferred while being injection molded. Thus, the molded article of Comparative Example 2 was obtained.

<Assessment and methods>

The molded articles using the transfer films produced in Examples 1 and 2 and Comparative Example 1 were measured for gloss (60°), and the film thickness of the matte release layer at the time of change in gloss was evaluated. Specifically, in each of Examples 1, 2 and Comparative Example 1, a transfer film having a different thickness of the matte release layer was prepared, and the film thickness of the matte release layer was changed to Δd and the gloss was changed. For ΔGr, the magnitude (Δd/ΔGr) of the film thickness change of the matte release layer at the time of gloss change was calculated and compared.

Further, the molded articles produced in Examples 1, 2, and 3 and Comparative Examples 1 and 2 were evaluated for the inconspicuous image of the surface. Specifically, the molded product is placed just below the 2 m of the fluorescent lamp, and when the outline of the fluorescent lamp cannot be seen (the level of practical no problem) is evaluated as ○, which can be seen (practical problem) ) is rated as ×.

<comparison result>

As shown in Table 1, it can be seen that the more the filler is added to the matte release layer, the smaller the change in gloss with the change in film thickness. As long as the variation of the film thickness assumed in the step is within 1 μm and the gloss change is within 5%, the influence on the appearance of the molded article cannot be seen. Therefore, the amount of filler added to the matte release layer is relative to the constituent resin. When the amount is 100 parts by mass or more, the appearance of the molded article is not impaired.

On the other hand, it can be seen that the less the amount of filler added to the matte layer, the worse the image is not sharp. When the amount of the filler to be added to the matte layer is 4.0 parts by mass or more based on 100 parts by mass of the material resin of the composition, the image clarity of the surface of the molded article is low, and a molded article having a good matte appearance can be obtained.

The present invention has been described above with reference to the specific embodiments, but the invention is not intended to limit the invention. Other embodiments of the present invention will be understood by those of ordinary skill in the art in light of this description. Accordingly, the scope of the claims is to be understood as including the modifications and embodiments of the invention.

As described in this embodiment and the present embodiment, The transfer film of one aspect of the invention and the transfer molded article using the same can solve the problems to be solved by the present invention. Hereinafter, details of the problems solved by the transfer film and the transfer molded article using the same according to the present invention will be described.

Conventionally, in order to decorate a plastic molded article, in order to replace the direct decoration method such as painting, the decoration is usually carried out by a thermal transfer method using a transfer film. Most of such transfer films require a hard coat function for the purpose of surface protection of a plastic molded article.

In general, the transfer film has a configuration in which first, a release layer is formed on one surface of the base film to prepare a release film. Next, a transfer film such as a hard coat layer, a decorative layer, or a back layer is sequentially laminated on the surface of the release layer to form a transfer film which can be decorated as desired.

Here, the release layer is required to have a transfer layer (especially a hard coat layer) peeled off from the release film and transferred to the transfer film during thermal transfer to a transfer body such as a plastic molded article. Good release properties of the body. Further, the hard coat layer is required to have surface properties such as scratch resistance or chemical resistance. Further, the decorative layer is required to impart designability to meet the demand; the layer is then required to have strong adhesion to the transferred body. Furthermore, the release layer of the first layer is formed as a release layer of the first layer, and in addition to the good release property of the transfer layer (especially a hard coat layer) as described above, it is required not to form a hard coat layer. a fisheye (apparent) which produces an ink for forming a hard coat layer; has heat resistance which can withstand applied heat at the time of transfer; has strong adhesion to a substrate film; and, even, can follow a transferred body Three-dimensional shape (extensibility) and other properties.

As a transfer film pair formed using the layers as described above The method of thermally transferring the transfer layer to the transfer target may be, for example, a method of performing transfer simultaneously with injection molding (in-mold molding), a method of transferring by hot pressing of a heat roller, or a vacuum and compression. Air, heating machine transfer method (vacuum compressed air forming), etc.

Here, the release film has another function in addition to the function as a supporting member of the transfer layer. It functions as a member that controls the appearance of the surface of the transfer target. This is because the surface side of the transfer layer that is in contact with the release film becomes the outermost surface of the transfer body after the transfer. Therefore, when it is desired to impart a matte appearance to the surface of the transfer target, for example, fine irregularities may be applied to the surface of the release layer of the release film in advance. Specifically, it can be achieved by adding a filler to the release layer. At the time of transfer, the release layer to which the filler is added is integrated with the release film, and only the transfer layer is transferred in this state, and on the outermost surface of the transfer layer, the surface of the release layer is transferred finely. Concave pattern. As a result, a rough surface appearance can be imparted to the object to be transferred (for example, Patent Document 1).

When a filler is added to the release layer formed on the surface of the base film to adjust the surface of the molded article to a matte surface, the gloss is determined by the amount of the filler to be added. At this time, if the desired appearance is a matte finish having a higher glossiness, the amount of the filler added can be reduced. However, when the amount of the filler of the release layer is reduced, the surface of the molded article such as a fluorescent lamp or the like (the image is not sharp) tends to be deteriorated. This is because the amount of the unevenness on the surface of the release layer is reduced because the amount of the filler added is reduced. In order to obtain a good matte finish on the surface of the molded article, it is necessary to image unsharpness, and it is required not to cause deterioration in image unsharpness under high gloss.

Here, it is formed on one side of the base film. A method of forming a release layer by applying a matte layer of a filler to a surface of the matte layer opposite to the substrate film. In this method, since the gloss can be changed depending on the thickness of the release layer without reducing the number of irregularities on the surface of the release layer. Therefore, image sharpness can be maintained even at high gloss.

However, the transfer film of the above-described prior art has a large change in gloss due to variations in the thickness of the release layer, and it is not easy to control the glossiness in the step.

The transfer film of the present invention and the transfer molded article using the same can solve the above problems.

[Industrial availability]

The transfer film obtained by the present invention can be applied to surface protection and decoration of panel members used in home electric appliances, home appliances, business machines, automobile parts, and the like.

1‧‧‧Substrate film

2‧‧‧Face layer

3‧‧‧Mask release layer

4‧‧‧hard coating

5‧‧‧primer layer

6‧‧‧Decorative layer

7‧‧‧Next layer

100‧‧‧Mao surface release film

101‧‧‧Transfer layer

200‧‧‧Transfer film

Claims (7)

A transfer film which is a transfer film formed by laminating at least one of a mat layer, a matte release layer, a hard coat layer and an adhesive layer on one side of a base film, and is characterized by: The matte layer contains a filler in a range of 4.0 parts by mass to 20.0 parts by mass or less based on 100 parts by mass of the resin constituting the mat layer, and the matte release layer is formed on the matte release layer. 100 parts by mass of the resin contains a filler in a range of 0.5 part by mass or more and 20.0 parts by mass or less. The transfer film of claim 1, wherein the resin-based two-liquid-curing urethane resin constituting the matte layer, the resin constituting the matte release layer is mainly composed of an urethane resin. The urethane urethane resin is produced by a crosslinking reaction of at least an acrylic polyol resin, an acrylic resin containing a hydroxyl group and a long-chain alkyl group having 10 or more and 30 or less carbon atoms, and an isocyanate compound. The transfer film of claim 1 or 2, wherein the resin constituting the matte layer comprises a hydroxyl group-containing acryl resin. The transfer film according to any one of claims 1 to 3, wherein the resin constituting the matte release layer contains a hydroxyl group-containing acryl resin. The transfer film according to any one of claims 1 to 4, wherein a decorative layer is provided between the aforementioned hard coat layer and the aforementioned adhesive layer. The transfer film of claim 5, wherein a primer layer is provided between the aforementioned hard coat layer and the aforementioned decorative layer. A transfer molded article obtained by using the transfer film of any one of claims 1 to 6.