JP2018176689A - Transfer sheet, production method of transfer sheet and production method of decorative molded product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transfer sheet by which a transfer layer for achieving preferable appearance of a decorative molded article can be transferred with suppression of generation of foil trash in cutting time.SOLUTION: There is provided a transfer sheet 100 comprising a transfer layer 20 on a release sheet 10, the release sheet 10 comprises a first region Rto be transferred to a transfer object, and a second region Ron which a positioning pattern is provided. The second region Rhas a salient part 4 on a surface side on the transfer layer 20 side, and the transfer layer 20 has a positioning pattern part AL having a protrusion part 23 with the salient part 4 as a foundation on a surface opposite to the surface where the release sheet 10 is provided, and has a colored layer 30 on the protrusion part 23.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a transfer sheet, a method of producing a transfer sheet, and a method of producing a decorated formed article.

In the fields of household appliances, automobile interior goods and sundries, etc., the surface of articles may be decorated by a transfer method.
In the transfer method, a transfer sheet having a transfer layer comprising a release layer, a pattern layer, an adhesive layer and the like formed on a substrate is brought into close contact with an article which is a transferred object, and then the substrate is peeled off. This is a method in which only the transfer layer is transferred to the surface of the transfer material for decoration.

In the transfer method, by adjusting the configuration of the transfer layer, it is possible to impart glossiness to the article to be transferred, or conversely, reduce the glossiness to impart a matte feeling.
For example, in Patent Document 1, a release layer containing a matting agent on the entire surface of a substrate sheet, a mask layer containing an active energy ray curable resin partially, a release layer as a transfer layer, and a pattern layer A partial mat transfer sheet is disclosed, characterized in that

Patent No. 5095598

In the case of transferring the transfer layer to the surface of the article to be transferred, as described in paragraph 0034 of Patent Document 1, alignment is extremely important.
Conventionally, in the printing field and the like, alignment is performed by printing a registration pattern called registration mark and reading the pattern by a sensor. Also in the transfer method, it is conceivable to print and align the pattern for alignment in this way.

  However, there is a problem that it is difficult to print the alignment pattern on the exact position of the transfer sheet, and it is difficult to transfer the transfer layer to the precise position of the transferred object. In addition, when printing a pattern for alignment, there is also a possibility that background stains occur.

  In order to solve the above problems, the present inventors have proposed in Japanese Patent Application No. 2016-168148 that a pattern for alignment is arranged on a release sheet. Then, as the inventors further examined, in the configuration, a part of the alignment pattern is generated as foil dust at the time of cutting and transfer of the transfer sheet on which the alignment pattern is printed. Foil dust may adhere to the transfer sheet, and when the transfer sheet is transferred to the surface of the article to be transferred, the appearance of the decorated formed product may be impaired, and there is room for improvement. I found it to be.

  The present invention has been made in view of such circumstances, and is a transfer sheet capable of transferring a transfer layer capable of suppressing the generation of foil dust and improving the appearance of a decorated molded product, a method of producing the transfer sheet, It is an object of the present invention to provide a method for producing a decorative molded article using the transfer sheet.

That is, the present invention provides the following [1] to [3].
[1] A transfer sheet having a transfer layer on a release sheet, wherein the release sheet has a first area for transfer to a material to be transferred and a second area for providing an alignment pattern The second region has a protrusion on the surface side on the transfer layer side, and the transfer layer has a protrusion based on the protrusion on the surface opposite to the surface on which the release sheet is provided. A transfer sheet comprising: an alignment pattern portion having: and a colored layer on the protrusion.
[2] A step of applying an ink for forming a resin layer containing an ionizing radiation curable resin composition on a support to form an uncured resin layer, and a shape complementary to the first region and the second region A step of forming an uncured resin layer using the printing plate and irradiating ionizing radiation at the same time to cure the shaped resin layer, and an ink for forming a release layer on the cured resin layer Applying a protective layer, applying a protective layer-forming ink containing an ionizing radiation curable resin composition on the release layer, and forming a protective layer, and A step of applying an adhesive layer forming ink to form an adhesive layer, and applying a colored layer forming ink on a protrusion formed at a position corresponding to the second region in the adhesive layer And forming a colored layer, the method of producing a transfer sheet according to [1].
[3] A method for producing a decorative formed article, comprising the steps of: transferring the transfer layer of the transfer sheet according to [1] onto a material to be transferred; and peeling the release sheet of the transfer sheet.

  According to the present invention, a transfer sheet capable of transferring a transfer layer capable of suppressing the generation of foil dust and improving the appearance of the decorative molded product, a method of producing the transfer sheet, and a decorative molded product using the transfer sheet Can provide a manufacturing method of

It is a sectional view showing one embodiment of a transfer sheet of the present invention. It is a top view which shows one Embodiment of the transfer sheet of this invention. It is a top view which shows one Embodiment of the pattern for alignment of this invention. It is the photograph which observed the colored layer formed by fusion thermal transfer from the plane direction with a microscope. It is the photograph which observed the colored layer formed by gravure reverse printing from the planar direction with the microscope.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the drawings are schematic, and the relationship between the thickness and the planar dimension, the ratio of the thickness of each layer, and the like are different from actual ones. Accordingly, specific thicknesses and dimensions should be determined in light of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios among the drawings are included.

[Transfer sheet]
The transfer sheet 100 according to the embodiment of the present invention is a transfer sheet having a transfer layer 20 on a release sheet 10 as shown in FIG. 1, and the release sheet 10 is to be transferred to a transfer target. a second region R ₂ for providing the first region R ₁ and the alignment pattern of the second region R ₂ have the convex portion 4 on the side of the transfer layer 20 side, the transfer layer 20 An alignment pattern AL having a protrusion 23 based on the protrusion 4 is provided on the surface opposite to the surface on which the release sheet 10 is provided, and the colored layer 30 is provided on the protrusion 23. .

<Release sheet>
The release sheet 10 includes a support 1, a resin layer 2, and a release layer 3. The release sheet 10 is peeled off after the transfer layer 20 is transferred to a transfer target such as a resin molded body.

(Support)
As the support 1, polyolefin resins such as polyethylene and polypropylene, polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, vinyl resins such as ethylene / vinyl acetate copolymer, ethylene / vinyl alcohol copolymer, etc., polyethylene terephthalate, Typical examples are polyester resins such as polyethylene naphthalate and polybutylene terephthalate, acrylic resins such as methyl poly (meth) acrylate and ethyl poly (meth) acrylate, styrene resins such as polystyrene, nylon 6 or nylon 66 etc. And plastic films made of resins such as polyamide resins.
Among these plastic films, a biaxially stretched polyester film which is excellent in heat resistance and dimensional stability and excellent in alignment suitability is preferable.

The thickness of the support 1 is preferably 12 to 150 μm, and more preferably 25 to 100 μm from the viewpoint of moldability, shape followability, and handling.
In the present specification, numerical values relating to height, roughness, width, and thickness are taken as an average value of ten measured values unless otherwise noted.

  Physical treatment such as corona discharge treatment or oxidation treatment, or application of a paint called an anchor agent or primer may be performed on the surface of the support 1 in order to enhance the adhesion to the resin layer 2 etc. .

(Resin layer)
The resin layer 2 is preferably formed of a resin component containing solid content such as a thermoplastic resin, a cured product of a thermosetting resin composition, and a cured product of an ionizing radiation curable resin composition. The solid content of the resin component used to form the resin layer 2 is preferably 20 to 100% by mass, more preferably 25 to 95% by mass, and still more preferably 30 to 90% by mass.
Among the above resin components, a cured product of an ionizing radiation curable resin composition which is excellent in strength and which can be given an accurate and precise shape because it is cured instantaneously is preferable. Further, from the viewpoint of making it easy to obtain the effect of the ionizing radiation curable resin composition, it is preferable that 70% by mass or more of the cured product of the ionizing radiation curable resin composition is contained among all the resin components constituting the resin layer 2 It is more preferable to contain 90 mass% or more, further preferable to contain 95 mass% or more, and even more preferable to contain 100 mass%.

Resin layer 2 may be formed by coating, accurately and in terms of forming a precise shape, by printing using a plate having a first region R ₁ and the second region R ₂ and the complementary shape It is preferable to form. When the resin layer 2 has other regions, it is preferable that the plate further have a shape complementary to the other regions. Details of a method of forming the resin layer 2 using a plate will be described later.

Examples of the thermoplastic resin include acrylic resins, cellulose resins, urethane resins, vinyl chloride resins, polyester resins, polyolefin resins, polycarbonates, nylons, polystyrenes and ABS resins.
A thermosetting resin composition is a composition containing at least a thermosetting resin, and is a resin composition which is cured by heating. Examples of the thermosetting resin include acrylic resins, urethane resins, phenol resins, urea melamine resins, epoxy resins, unsaturated polyester resins, silicone resins and the like. In the thermosetting resin composition, a curing agent is added to these curable resins as needed.

The ionizing radiation curable resin composition is a composition containing a compound having an ionizing radiation curable functional group (hereinafter also referred to as "ionizing radiation curable compound"). Examples of the ionizing radiation curable functional group include ethylenic unsaturated bond groups such as (meth) acryloyl group, vinyl group and allyl group, and epoxy group and oxetanyl group.
As the ionizing radiation curable resin, a compound having an ethylenically unsaturated bond group is preferable. Further, from the viewpoint of suppressing damage to the resin layer in the process of producing the transfer sheet, as the ionizing radiation curable resin, a compound having two or more ethylenic unsaturated bonding groups is more preferable, and among them, ethylenic non-bonding resin is more preferable. More preferred are polyfunctional (meth) acrylate compounds having two or more saturated bonding groups. As a polyfunctional (meth) acrylate type compound, any of a monomer and an oligomer can be used.
In addition, ionizing radiation means one having an energy quantum capable of polymerizing or crosslinking a molecule among electromagnetic waves or charged particle beams, and usually, ultraviolet (UV) or electron beam (EB) is used, and others It is also possible to use charged particle beams such as electromagnetic waves such as X-rays and γ-rays, α-rays and ion beams.

Among the polyfunctional (meth) acrylate compounds, as a bifunctional (meth) acrylate monomer, ethylene glycol di (meth) acrylate, bisphenol A tetraethoxy diacrylate, bisphenol A tetrapropoxy diacrylate, 1,6-hexane Diol diacrylate etc. are mentioned.
Examples of trifunctional or higher (meth) acrylate monomers include trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate, Pentaerythritol tetra (meth) acrylate, isocyanuric acid modified tri (meth) acrylate and the like can be mentioned.
Further, the (meth) acrylate monomer may be one in which a part of the molecular skeleton is modified, and is modified by ethylene oxide, propylene oxide, caprolactone, isocyanuric acid, alkyl, cyclic alkyl, aromatic, bisphenol or the like. Can also be used.

Moreover, as a polyfunctional (meth) acrylate type oligomer, acrylate type polymers, such as a urethane (meth) acrylate, an epoxy (meth) acrylate, polyester (meth) acrylate, polyether (meth) acrylate, etc. are mentioned.
Urethane (meth) acrylates are obtained, for example, by the reaction of polyhydric alcohols and organic diisocyanates with hydroxy (meth) acrylates.
Preferred epoxy (meth) acrylates are (meth) acrylates obtained by reacting trifunctional or higher functional aromatic epoxy resins, alicyclic epoxy resins, aliphatic epoxy resins, etc. with (meth) acrylic acid, and bifunctional (Meth) acrylates obtained by reacting the above aromatic epoxy resin, alicyclic epoxy resin, aliphatic epoxy resin, etc. with polybasic acid and (meth) acrylic acid, and bifunctional or more aromatic epoxy resin, (Meth) acrylates obtained by reacting an alicyclic epoxy resin, an aliphatic epoxy resin or the like, a phenol and (meth) acrylic acid.
The said ionizing radiation curable resin can be used individually by 1 type or in combination of 2 or more types.

When the ionizing radiation curable resin is an ultraviolet curable resin, it is preferable that the resin layer forming ink contains an additive such as a photopolymerization initiator or a photopolymerization accelerator.
Examples of the photopolymerization initiator include one or more selected from acetophenone, benzophenone, α-hydroxyalkylphenone, Michler's ketone, benzoin, benzyl dimethyl ketal, benzoyl benzoate, α-acyloxime ester, thioxanthones and the like.
Further, the photopolymerization accelerator can reduce the polymerization inhibition by air at the time of curing and can accelerate the curing rate, for example, p-dimethylaminobenzoic acid isoamyl ester, p-dimethylaminobenzoic acid ethyl ester, etc. One or more types selected may be mentioned.

  The thickness of the resin layer 2 is not particularly limited, but is preferably 1 to 15 μm, more preferably 2 to 12 μm, and still more preferably 3 to 10 μm.

(Release layer)
The release sheet 10 of the transfer sheet 100 is formed so as to be removable at the interface with the transfer layer 20 when the release sheet 10 is in close contact with the material to be transferred. In order to improve the releasability, the release sheet 10 preferably has the release layer 3 on at least a part of the surface in contact with the transfer layer 20. Further, from the viewpoint of making the in-plane releasability of the transfer sheet 100 uniform, as shown in FIG. 1, the release sheet 10 has a release layer 3 on the entire surface on the side in contact with the transfer layer 20. Is preferred.

When the uneven portion 5 is provided in the first region R ₁ , the unevenness is reduced by forming the release layer 3 on the uneven portion 5, and the uneven shape having a small number of high frequency components is formed on the surface of the decorative molded product. It is possible to suppress the whitening and glare of the decorative molded product.
Here, “glare” refers to a phenomenon in which minute variations in luminance can be seen in image light due to the uneven structure on the surface. That is, by forming the release layer 3 on the concavo-convex portion 5, glare can be suppressed when the decorated formed product is used in front of a display element such as a liquid crystal display element.

The release layer 3 is preferably composed mainly of a resin.
The resin of the release layer 3 is not particularly limited as long as it has a predetermined film strength and a low adhesion to the transfer layer 20, and is a cured product of a general-purpose thermoplastic resin or thermosetting resin composition, A cured product of the ionizing radiation curable resin composition may, for example, be mentioned. Specifically, fluorine resin, silicone resin, acrylic resin, polyester resin, polyolefin resin, polystyrene resin, polyurethane resin, cellulose resin, vinyl chloride-vinyl acetate copolymer resin, nitrified cotton Etc.
Among these, a cured product of a thermosetting resin composition is preferable, and a thermosetting resin composition which is a polyurethane resin containing an acrylic polyol and an isocyanate is more preferable.

  The release layer 3 may further include a release agent in order to improve the releasability. As a mold release agent, waxes, such as a synthetic wax and a natural wax, are mentioned. As the synthetic wax, polyolefin waxes such as polyethylene wax and polypylene wax are preferable.

  The thickness of the release layer 3 is preferably 0.1 to 5.0 μm, more preferably 0.2 to 3.0 μm, and still more preferably 0.3 to 1.0 μm.

(Other layers)
The release sheet 10 may have other layers.
Other layers include antistatic layers. By having the antistatic layer, the release sheet 10 can suppress peeling charge at the time of peeling the release sheet, and can improve transfer workability.

(Antistatic layer)
The antistatic layer preferably contains an electron conductive antistatic agent, an antistatic agent such as an ion conductive antistatic agent, and a binder resin.
The antistatic layer is preferably formed on the surface of the release sheet opposite to the surface in contact with the transfer layer.
The antistatic layer preferably has a surface resistivity adjusted to a range of 1.0 × 10 ⁻⁹ Ω / □ to 1.0 × 10 ⁻¹² Ω / □.
The antistatic agent may be contained in another layer such as a resin layer to exhibit antistatic properties.

(First area)
The first region R ₁ of the release sheet 10 is a region for providing the transfer layer 20 to be transferred to the transfer target.
Surface shape of the first region R ₁ is not particularly limited. Surface shape of the first region R ₁ is, for example, as shown in FIG. 1, may have an irregular shape, it may be substantially smooth.
As shown in FIG. 1, when the uneven portion 5 is provided in the first region R ₁ , the transfer layer 20 having a complementary shape of the uneven portion 5 (the release layer 3 on the uneven portion 5) The transfer layer 20 having the complementary shape of the concavo-convex shape relaxed by the release layer 3 is transferred, and the concavo-convex shape can be imparted to the surface of the resulting decorative molded product.
Further, when the surface shape of the first region R ₁ is substantially smooth, increasing the substantially can be made smooth, gloss resulting decorative molded article surface shape of the transfer layer 20 has been transferred to the transfer target Can.

Because different according to the surface shape for imparting the decorative molded article, the absolute value of the degree of irregularities in the first region R ₁ is not particularly limited, the maximum height roughness Rz is 0.2~4.0μm It is preferable to set it as a degree. Similarly, the arithmetic mean roughness Ra is preferably about 0.05 to 2.0 μm.
In the present specification, the maximum height means the maximum height roughness Rz of JIS B 0601: 2001 at a cutoff value of 0.8 mm, and the average roughness is the arithmetic of JIS B 0 601: 2001 at a cutoff value of 0.8 mm. It means the average roughness Ra. In the present specification, numerical values relating to height and roughness are average values of ten measured points unless otherwise noted.

Although not shown, it may be formed by dividing the first region R ₁ to two or more locations. In that case, it may be each of the first region R ₁ of the surface shape as different. The first region R ₁ and formed by dividing into two or more portions, further, by making the respective first region R ₁ of the surface shape different, it is possible to enhance the design property of the decorative molded article.

(2nd area)
The second region R ₂ of the release sheet 10 is a region for providing the alignment pattern used for transferring the transfer target (alignment marks).
The second region R ₂ has a convex portion 4 that is partially disposed to the basis of the alignment pattern. The convex portion 4 is preferably formed on the resin layer 2 by printing using a plate having a shape complementary to the second region R ₂ from the viewpoint of forming an accurate and precise shape.

It is preferable that the convex part 4 is formed from the line-shaped structure extended | stretched in arbitrary directions. The arbitrary direction is not particularly limited, and may be an oblique direction (for example, 45 degrees with respect to the width direction of the transfer sheet), but it is preferable that the direction is parallel to any one side of the transfer sheet 100 The flow direction of the transfer sheet 100 is more preferable. By setting the convex portion 4 to this configuration, alignment can be facilitated.
Moreover, it is preferable that direction of each of the plurality of convex portions 4 is parallel.
Further, the convex portion 4 may be formed continuously without interruption in any direction in the second inner region R _2, but may be one that extends in any direction partially interrupted.

The height h of the convex portion 4 is preferably 1.0 to 10.0 μm, more preferably 1.5 to 9.0 μm, and still more preferably 2.0 to 8.0 μm.
By setting the height h of the projections 4 to 3.0 μm or more, the projections 23 based on the projections 4 can be easily formed on the surface of the transfer layer 20. Further, by setting the height h of the convex portion 4 to 10 μm or less, the convex portion 4 is less likely to be deformed by a load, and the alignment accuracy can be easily maintained.
The heights h of the protrusions 4 may not be the same. However, from the viewpoint of uniformly forming the height H of the projecting portion 23 and facilitating the formation of the colored layer 30 uniformly, the height h of the convex portion 4
Are preferably identical to each other.
In the present specification, the height h of the convex portion 4 refers to the height of the central portion of the cross section obtained by cutting the structure forming the convex portion 4 in the direction orthogonal to the extending direction of the structure. .

The distance between the end portions of the convex portion 4 is preferably 0.05 to 2.0 mm, more preferably 0.075 to 1.0 mm, and further preferably 0.10 to 0.7 mm. preferable.
By setting the distance between the end portions of the convex portions 4 to 0.01 mm or more, the recognition rate of the alignment mark can be improved.
Further, by making the interval of ends of the protrusions 4 and 2.0mm or less, it is possible to suppress the area of the second region R ₂ is wider than necessary.

The width of the projections 4 is preferably 0.01 to 2.0 mm, more preferably 0.025 to 1.0 mm, and still more preferably 0.05 to 0.5 mm. By setting the width of the convex portion 4 to 0.05 mm or more, the strength of the convex portion 4 can be maintained, and the convex portion 4 can be easily formed uniformly. Further, by making the width of the convex portion 4 and 3.0mm or less, it is possible to suppress the area of the second region R ₂ is wider than necessary.

  It is preferable that the cross section which cut | disconnected the structure which forms the convex part 4 in the direction orthogonal to the extending | stretching direction of a structure is substantially square shape.

The convex portion 4 and the transfer layer 20 described later preferably satisfy the relationship of [height of convex portion / thickness of transfer layer] of 0.1 to 5.0, and preferably 0.1 to 3.5. It is more preferable to satisfy the relation, and it is further preferable to satisfy the relation of 0.1 to 1.0.
By setting the ratio to 0.1 or more, it is possible to easily form the protrusion 23 based on the protrusion 4 on the surface of the transfer layer 20. Further, by setting the ratio to 5.0 or less, the convex portion 4 is not easily deformed by a load, and the alignment accuracy can be easily maintained.

Transfer sheet 100 of the present embodiment may have a second region R ₂ of two or more. If a second region R ₂ of two or more, it is preferable to change the role of each area. For example, when having a plurality of second regions R _2, either one aligns the width direction, it is preferably configured to perform the alignment of the flow direction in the other. By configuring the second region R ₂ as described above, it is possible to align in both directions in the width direction and the flow direction, thereby improving the accuracy of alignment.

The second region R ₂ are transferred to the transfer target, preferably be removed at the stage to obtain a decorated molded article. The timing of removing the second region R _2, for example, (1) during the step of slitting the transfer sheet 100 to the long, (2) during the step of stamping the transfer sheet 100 to the sheet, (3) transfer sheet At the time of the trimming process after transferring 100 to a material to be transferred, etc. may be mentioned. The transfer layer 20 from the viewpoint of transferring the exact position of the object to be transferred, it is preferable to remove the second region R ₂ at the timing of (3).

<Transfer layer>
A transfer layer 20 is formed on at least a part of the release sheet 10.
The transfer layer 20 is a layer to be transferred to a transfer target, and has, for example, a protective layer 21 and an adhesive layer 22 in order from the side closer to the release sheet 10 as shown in FIG. 1. The transfer layer 20 has projections 23 based on the projections 4 on the surface.
The transfer layer 20 is preferably formed on the entire surface of the release sheet 10 as shown in FIG.

Each layer such as the protective layer 21 and the adhesive layer 22 constituting the transfer layer 20 is prepared, for example, by using an ink containing a component of each layer, and coating the release sheet 10 with a coating method such as gravure coating or roll coating. It forms by apply | coating and drying by printing methods, such as the gravure printing method and the screen printing method, irradiating with ionizing radiation and hardening it as needed.
The ink for forming the transfer layer for forming the transfer layer 20 has a solvent ratio of 90% by mass or less from the viewpoint of facilitating the formation of the protrusion 23 that follows the protrusion 4 as a basis preferable.

The height H of the protrusion 23 is preferably 1.0 to 10.0 μm, more preferably 1.5 to 9.0 μm, and still more preferably 2.0 to 8.0 μm.
By setting the height H of the protruding portion 23 to be 1.0 μm or more, the vicinity of the top of the protruding portion 23 can be selected to facilitate the provision of the colored layer 30. Further, by setting the height H of the protruding portion 23 to 10.0 μm or less, the protruding portion 23 is less likely to be deformed by a load, and the alignment accuracy can be easily maintained.
The heights H of the protrusions 23 may not all be the same. However, in order to facilitate formation of the colored layer 30 uniformly, it is preferable to make all the heights H of the protrusions 23 the same.
In the present specification, the height H of the protrusion 23 refers to the height of the central portion of the cross section obtained by cutting the structure forming the protrusion 23 in the direction perpendicular to the extension direction of the structure. .

The distance W between the end portions of the protrusion 23 is preferably 0.05 to 3.0 mm, more preferably 0.07 to 2.0 mm, and 0.1 to 1.0 mm. More preferable. If the distance W between the end portions of the protrusion 23 is too narrow, the colored layers 30 may stick to each other, which may adversely affect the alignment.
By setting the distance W between the end portions of the projecting portion 23 to 0.05 mm or more, it is possible to prevent adjacent colored layers 30 from sticking to each other when the colored layers 30 are formed. Further, by setting the distance W between the end portions of the protruding portion 23 to be 3.0 mm or less, it is possible to suppress the area of the alignment pattern portion AL from becoming wider than necessary.
In the present specification, the distance W between the ends of the protrusions 23 refers to the end-to-end distance between the bottoms of the protrusions 23, and in the present embodiment, the flat which becomes the ends of the bottoms of adjacent protrusions 23. Refers to the distance in the adhesive layer 22.

(Protective layer)
The protective layer 21 has a role of protecting the decorated formed article from abrasion, light, chemicals, and the like after the transfer layer 20 is transferred from the transfer sheet 100 to the transferred material.
If having a concave-convex portion 5 release sheets first region R ₁ of 10, protective layer 21 having a complementary shape to the irregular shape is imparted to the surface of the decorative molded article. Further, when the first region R ₁ of the release sheet 10 is substantially smooth, it can be surface substantially smooth protective layer 21 is applied to the surface of the decorative molded article, increasing the gloss of the decorative molded article.

The protective layer 21 preferably contains as a main component a resin component such as a thermoplastic resin, a cured product of a thermosetting resin composition, or a cured product of an ionizing radiation curable resin composition. In addition, a main component means 50 mass% or more of the total solid which comprises a protective layer, It is preferable that this ratio is 70 mass% or more, and it is more preferable that it is 80 mass% or more.
Moreover, the hardened | cured material of the ionizing radiation curable resin composition which is excellent in intensity | strength among the said resin component is suitable. Further, from the viewpoint of making the effect of the ionizing radiation curable resin composition better, it is preferable that 70% by mass or more of the cured product of the ionizing radiation curable resin composition is contained among all the resin components constituting the protective layer. It is more preferable to include mass% or more, further preferable to include 95 mass% or more, and still more preferable to include 100 mass%.
The transfer layer forming ink for forming the protective layer 21 preferably has a solvent ratio of 60 to 90% by mass or less, from the viewpoint of facilitating the formation of the projecting portion 23 that follows the convex portion 4 as a base, It is more preferable that it is -90 mass%, and it is further more preferable that it is 70-90 mass%.

The embodiment of the resin component such as the ionizing radiation curable resin composition of the protective layer 21 is the same as the embodiment of the resin component of the resin layer 2 described above.
When a thermosetting resin composition and / or an ionizing radiation curable resin composition is used as a material for forming the protective layer 21, the thermosetting resin may be used at the time of forming the protective layer 21 from the viewpoint of moldability. After the composition and / or the ionizing radiation curable resin composition are in a semi-cured state and transferred to the transferred material, curing of the thermosetting resin composition and / or the ionizing radiation curable resin composition is advanced, Complete curing is preferred.

  The protective layer 21 may contain particles such as organic particles and inorganic particles. By containing particles in the protective layer 21, glare and defects can be made less noticeable by the expression of internal haze due to the difference in refractive index with the resin component. These particles may be contained in an adhesive layer, an anchor layer or the like described later for the same purpose.

As organic particles, particles composed of polymethyl methacrylate, polyacryl-styrene copolymer, melamine resin, polycarbonate, polystyrene, polyvinyl chloride, benzoguanamine-melamine-formaldehyde condensate, silicone, fluorine resin, polyester resin, etc. It can be mentioned.
Examples of the inorganic particles include particles made of silica, alumina, antimony, zirconia, titania and the like.

0.05-5.0 micrometers is preferable and, as for the average particle diameter of particle | grains, 0.5-3.0 micrometers is more preferable.
In the present specification, the average particle size is a 50% particle size (d50: median size) when the particles in the solution are measured by a dynamic light scattering method and the particle size distribution is represented by a mass cumulative distribution. The 50% particle size can be measured, for example, using a Microtrac particle size analyzer (manufactured by Nikkiso Co., Ltd.).

  The content of the particles is preferably 0.1 to 20 parts by mass, and more preferably 1 to 10 parts by mass with respect to 100 parts by mass of the resin component of the protective layer 21.

  The thickness of the protective layer 21 is preferably 0.5 to 30 μm, more preferably 1.0 to 20 μm, and 2.0 to 10 μm from the viewpoint of the balance of surface hardness and moldability. Is more preferred.

(Adhesive layer)
The adhesive layer 22 has a role of improving the adhesion between a transfer target such as a resin molded product and the transfer layer 20 and improving the transfer operation.

  On the surface of the transfer layer 20, an alignment pattern portion AL having a protrusion 23 based on the protrusion 4 is provided. In the case where the adhesive layer 22 constitutes the surface of the transfer layer 20, the surface of the adhesive layer 22 is provided with the alignment pattern portion AL having the projecting portion 23 based on the convex portion 4. The protrusion 23 is formed to follow the protrusion 4 by providing the transfer layer 20 including the protective layer 21 and the adhesive layer 22 on the protrusion 4 provided on the release sheet 10. It is a site.

The adhesive layer 22 is preferably made of a heat-sensitive or pressure-sensitive resin suitable for the material of the transferred material. For example, in the case where the material of the object to be transferred is an acrylic resin, it is preferable to use an acrylic resin. If the material of the transferred material is polyphenylene oxide / polystyrene resin, polycarbonate resin, or styrene resin, use acrylic resin, polystyrene resin, polyamide resin, etc. having affinity to these resins. Is preferred. Furthermore, when the material of the transferred material is a polypropylene resin, it is preferable to use a chlorinated polyolefin resin, a chlorinated ethylene-vinyl acetate copolymer resin, a cyclized rubber, and a coumarone indene resin.
The adhesive layer 22 may contain additives such as an ultraviolet absorber and an infrared absorber. The ultraviolet absorber may be inorganic or organic, but an organic ultraviolet absorber is preferable from the viewpoint of excellent transparency. As an inorganic type ultraviolet absorber, titanium dioxide, a cerium oxide, a zinc oxide etc. are mentioned, for example. Examples of organic UV absorbers include benzotriazole UV absorbers, triazine UV absorbers, benzophenone UV absorbers, salicylate UV absorbers, benzoate UV absorbers, cyanoacrylate UV absorbers, hydroxy Examples thereof include phenyl triazine based ultraviolet absorbers and nickel chelate based ultraviolet absorbers. Examples of the infrared absorber include titanium oxide, zinc oxide, indium oxide, tin-doped indium oxide (ITO), tin oxide, antimony-doped tin oxide (ATO), and zinc sulfide metal oxide-based infrared absorbers.
The adhesive layer-forming ink for forming the adhesive layer 22 preferably has a solvent ratio of 80 to 90% or less from the viewpoint of facilitating the formation of the projecting portion 23 that follows the convex portion 4 as a basis, It is more preferable that it is 85-90 mass%.

The thickness of the adhesive layer 22 is preferably 0.1 to 20 μm, more preferably 0.5 to 15 μm, and still more preferably 1.0 to 10 μm.
The adhesive layer 22 may be configured to include two layers of an anchor coat layer and an adhesive layer. In the case where the anchor coat layer and the adhesive layer are included, the thickness of the anchor coat layer is preferably 0.5 to 10 μm, more preferably 1.0 to 8.0 μm, and 2.0 to 6. More preferably, it is 0 μm. The thickness of the adhesive layer is preferably 0.1 to 10 μm, more preferably 0.5 to 8.0 μm, and still more preferably 1.0 to 5.0 μm.

(Colored layer)
The colored layer 30 is provided on the protrusion 23 of the alignment pattern portion AL provided on the surface of the transfer layer 20. The colored layer 30 has a role of causing a contrast of light transmittance or light reflectance between a place where the colored layer 30 is present and a place where the colored layer 30 is not provided in the alignment pattern portion AL.
The colored layer 30 is disposed so as to be positioned at least a part of the alignment pattern portion AL of the transfer layer 20 (the adhesive layer 22) as shown in FIG. 2 when the transfer sheet 100 is observed from the planar direction. It is preferable to do.

As shown in FIG. 3, the colored layer 30 is preferably composed of three parts, a line portion 30a, a solid central portion 30b, and a solid portion 31.
The light transmittance or the light reflectance is different between the line portion 30a and the solid central portion 30b, and the contrast of the light transmittance or the light reflectance can be used to position the transfer sheet 100 in any step. It becomes. The light transmittance may be any of the transmittance in the regular transmission direction, the diffuse transmittance, and the total transmittance. Similarly, as the light reflectance, any of the transmittance in the regular reflection direction, the diffuse reflectance and the total reflectance may be used.
The ratio of the area of the line portion 30a in the colored layer 30 in the second region _{R 2} is preferably 15 to 85%, more preferably from 20% to 80%, more preferably from 30% to 70% . By setting the ratio of the area of the line portion 30a to the above range, the contrast of the light transmittance or the light reflectance between the solid coated portion 30b and the solid coated portion 31 can be made easy to be clear, and the alignment accuracy is enhanced. Can.
Except the second region _{R 2} of the line portion 30a and the solid fill central portion 30b, it is preferable that the solid color portion 31. Areafill portion 31 may be wider than the second region R ₂ of the line portion 30a is wide is preferably easier to see more alignment pattern portion AL in different width.

The colored layer 30 is preferably a linear pattern having an average value of the line width L of 0.01 to 4.0 mm from the viewpoint of easiness of alignment when the transfer sheet 100 is observed from the planar direction. From the above viewpoint, the average value of the line width L of the colored layer 30 is more preferably 0.01 to 2.0 mm, further preferably 0.025 to 1.0 mm, and 0.05 to 0. Even more preferably 5 mm. In the present specification, the average value of the line width L refers to an average of values obtained by measuring 10 or more line widths of the colored layer 30.
From the above viewpoint, in the colored layer 30, the fluctuation of the line width L is preferably 10% or less, more preferably 7% or less, and still more preferably 5% or less. Here, that the fluctuation of the line width L is within 10% means that all the line widths are within ± 10% of the average value of the line width L. In addition, as a cause which a fluctuation | variation of the line width L produces, it is thought that it originates in the shape change of the protrusion part 23 which arises by forming a protective layer, an adhesive bond layer, etc. FIG.

  The thickness of the colored layer 30 is preferably 0.3 to 5.0 μm, more preferably 0.4 to 4.0 μm, from the viewpoint that a contrast for alignment can be easily obtained. More preferably, it is 5 to 3.0 μm.

The colored layer 30 is made of, for example, a binder resin and a pigment.
The pigment of the colored layer 30 preferably contains a pigment having high hiding power. As a pigment with high concealability, black pigments such as carbon black are preferable.
The binder resin for the colored layer 30 is not particularly limited, and, for example, (meth) acrylic resin, polyurethane resin, polyester resin, polyamide resin, (meth) acrylic ester-olefin copolymer resin, vinyl chloride acetate resin, ethylene -Thermoplastic resins such as vinyl acetate copolymer resin (EVA resin), ionomer resin, olefin-α-olefin copolymer resin oil; polyurethane resin, polyester resin, acrylic resin, epoxy resin, phenol resin, urea resin, polyester resin And curable resins such as melamine resins, alkyd resins, polyimide resins, silicone resins, and amide functional copolymers. Here, the curable resin includes a thermosetting resin, an ionizing radiation curable resin, a two-component curable resin, and the like. The binder resin of the colored layer 30 is preferably a thermoplastic resin from the viewpoint of suppressing foil dust.
In addition, it is preferable that the colored layer 30 does not contain a hardening | curing agent from a viewpoint of blocking suppression.

The colored layer 30 can be formed, for example, by transferring the ink for forming a colored layer on the protruding portion 23 of the alignment pattern portion AL by a transfer method such as melt heat transfer and sublimation heat transfer. As a transfer method for forming the colored layer 30, melt thermal transfer is particularly preferable from the viewpoint of suppression of foil dust.
Alternatively, the colored layer 30 may be formed by applying an ink for forming a colored layer on the protruding portion 23 of the alignment pattern portion AL by a printing method such as gravure reverse printing or gravure printing, and then drying it. it can. As a printing method for forming the colored layer 30, gravure reverse printing is particularly preferable.
The photograph which observed the coloring layer 30 formed of the fusion | melting thermal transfer from the planar direction with a microscope is shown in FIG. The photograph which observed the coloring layer 30 formed of gravure reverse printing from the planar direction with a microscope is shown in FIG. When the photographs of FIG. 4 and FIG. 5 are compared, the colored layer 30 formed by the fusion thermal transfer of FIG. 4 is clearer and preferable. In the colored layer 30 formed by the gravure reverse printing in FIG. 5, ground stains were partially observed, but the sharpness for alignment was maintained.

  The thickness of the colored layer 30 is preferably 0.3 to 5.0 μm, and preferably 0.4 to 4.0 μm, from the viewpoint that it may be adjusted in a range in which the contrast for alignment can be obtained. Is more preferable, and 0.5 to 3.0 μm is more preferable.

(Other layers)
The transfer layer 20 may have other layers.
Other layers include anchor layers and print layers.

(Anchor layer)
The anchor layer is a layer provided as needed to improve heat resistance when placed in a high temperature environment such as in-mold molding. The anchor layer is preferably formed between the protective layer 21 and the adhesive layer 22.

The anchor layer preferably contains a cured product of the curable resin composition.
Examples of the curable resin composition include a thermosetting resin composition and an ionizing radiation curable resin composition.
Embodiments of the thermosetting resin composition of the anchor layer and the ionizing radiation curable resin composition are the same as the embodiments of the thermosetting resin composition of the resin layer and the ionizing radiation curable resin composition.
The thickness of the anchor layer is preferably 0.1 to 6 μm, more preferably 0.3 to 5 μm, and still more preferably 0.5 to 4 μm.
The ink for forming an anchor layer for forming the anchor layer preferably has a solvent ratio of 70 to 90% by mass or less, from the viewpoint of facilitating the formation of the protruding portion 23 that follows the convex portion 4 as a base, It is more preferable that it is 90 mass%, and it is further more preferable that it is 80-90 mass%.

(Printed layer)
The transfer layer 20 may further have a print layer. The print layer has a role of providing the decorative molded article with a desired design.

Printed layer, when observed the transfer sheet 100 from the planar direction, is preferably disposed so as to be positioned on at least a portion of the first region R _1.
Further, the position in the thickness direction of the print layer may be disposed on the adhesive layer 22, or may be disposed between the adhesive layer 22 and the protective layer 21, or the protective layer 21 may be separated from the protective layer 21. It may be disposed between the seat 10 and the seat 10. It is preferable to dispose the printing layer between the adhesive layer 22 and the protective layer 21 from the viewpoint of the protection of the printing layer and the adhesiveness to the transferred material. In addition, from the viewpoint of dealing with small lot products, it is preferable to dispose a printing layer on the adhesive layer 22. When the print layer is disposed on the adhesive layer 22, the resin component of the print layer is made of the same resin as the resin component of the adhesive layer 22 from the viewpoint of making the adhesiveness with the transferred material uniform. It is preferable to use the same resin.

  The pattern of the print layer is arbitrary, and examples thereof include grain, stone, grain, grain, circle, square, polygon, geometric pattern, characters, solid print, and the like.

The printing layer preferably contains a binder resin such as polyvinyl resin, polyester resin, acrylic resin, polyvinyl acetal resin, and cellulose resin, and a pigment and / or a dye.
The thickness of the print layer is preferably 0.25 to 20 μm, more preferably 0.5 to 15 μm, and still more preferably 0.7 to 10 μm from the viewpoint of design.

  Note that although alignment is important when forming the printing layer, the printing layer can be formed at an accurate position by performing alignment using the alignment pattern portion AL.

[Method of manufacturing transfer sheet]
In the method of producing a transfer sheet 100 according to the embodiment of the present invention, a step of applying a resin layer forming ink containing an ionizing radiation curable resin composition on a support 1 and forming an uncured resin layer 2 And using the plate having a shape complementary to the first region R ₁ and the second region R ₂ to shape the uncured resin layer 2 and simultaneously apply the ionizing radiation to shape the resin layer 2. And a step of applying a release layer forming ink on the cured resin layer 2 to form a release layer 3 and applying a protective layer forming ink on the release layer 3. A step of forming a protective layer 21; a step of forming an adhesive layer 22 by applying an adhesive layer forming ink on the protective layer 21; and a position corresponding to the second region R ₂ in the adhesive layer 22. The ink for forming a colored layer is applied on the protruding portion 23 formed on the surface to form the colored layer 30. Including the extent, the.

Plate having a shape complementary to the first region R ₁ and the second region R ₂ is, for example, etching, sandblasting, cutting and laser machining, or by a combination thereof, to engrave the surface of the cylinder to a desired shape It can be obtained by Alternatively, laser engraving, by stereolithography or the like to prepare a plate of male long (plate having a first region R ₁ and the second region R ₂ and the same shape), a material obtained by inverting it to the surface of the cylinder It can be obtained by winding. The surface of these plates is preferably hard-plated with chromium or the like.

  It is preferable that the transfer sheet 100 be manufactured with multiple faces in view of manufacturing efficiency. The transfer sheet 100 manufactured in this way in a multi-faceted manner is subjected to a transfer process as a long transfer sheet or a single transfer sheet.

  The transfer sheet 100 manufactured by the above-described steps can easily form the colored layer 30 which is pattern printing for alignment on the projecting portion 23, and the light transmission in the alignment pattern formed by the colored layer 30. The contrast of the rate or the light reflectance is clear and alignment can be facilitated.

As an optional step of alignment, for example, a step of slitting the transfer sheet 100 into a long length, a step of cutting the transfer sheet 100 into a single sheet, and a step of transferring the transfer sheet 100 to a transferee can be mentioned.
In the case of performing alignment by the light transmittance by the colored layer 30 which is pattern printing for alignment, for example, the light source installed below the transfer sheet 100 and the light source above the transfer sheet 100 were installed facing the light source. Positioning can be performed by detection with the light detection means.
In the case where alignment is performed based on the light reflectance by the colored layer 30 which is pattern printing for alignment, for example, detection can be performed by a light source and light detection means installed at an arbitrary angle above the transfer sheet 100.

[Method for producing a decorated molded article]
The method for producing a decorative molded article according to the embodiment of the present invention includes the steps of transferring the transfer layer 20 of the transfer sheet 100 of the present invention to a transferred material, and peeling the release sheet 10 of the transfer sheet 100. And a process.
As a material to be transferred, a resin molding or the like can be mentioned.

  The decorative molded product produced by the above-described steps has no generation of foil dust on the transfer sheet 100 used, and can have a good appearance after transfer.

  A well-known transfer method can be used for the manufacturing method of a decorating molded article. For example, (i) a method of attaching a transfer sheet to a preformed transferred object, transferring the transfer layer of the transfer sheet, and peeling off the release sheet of the transfer sheet, (ii) a flat plate A method of sticking a transfer sheet to a transfer material, transferring the transfer layer of the transfer sheet, peeling off the release sheet of the transfer sheet, and then forming a transferred object on which the transfer layer is laminated, (iii 2.) A method of integrating a transfer sheet in injection molding of a material to be transferred and thereafter peeling off the release sheet of the transfer sheet [In-mold molding (injection molding simultaneous transfer decoration method)] and the like can be mentioned. Above all, according to in-mold molding (injection molding simultaneous transfer decoration method), it can be decoratively molded to a resin molded body having a complicated surface shape such as a three-dimensional curved surface.

As one embodiment of a method for producing a decorated molded product using the transfer sheet of the present invention by in-mold molding, (1) disposing the transfer layer side of the above-mentioned transfer sheet toward the inside of the in-mold molding die (2) injecting and injecting a resin into the in-mold molding die;
(3) unifying the transfer sheet and the resin to transfer the transfer layer of the transfer sheet onto the surface of the resin molded product (transferred object); And D. removing the release sheet of the transfer sheet after removing the object from the mold.
(1) during placement of the step, if the second region R ₂ is left, by using the alignment pattern of the second region R _2, placing the transfer sheet in the correct position of the mold be able to.
In addition, it is preferable to trim an unnecessary part (removal) as needed after a (4) process. (4) When the second region R ₂ after step are still present, it is preferred to trim (remove) the region.

(Resin molded body)
It is preferable to use an injection moldable thermoplastic resin or thermosetting resin as the resin molded body, and various known resins can be used.
In the case of producing the decorative molded article according to the present invention by in-mold molding, it is preferable to use a thermoplastic resin. As such a thermoplastic resin, polystyrene resin, polyolefin resin, ABS resin (including heat resistant ABS resin), AS resin, AN resin, polyphenylene oxide resin, polycarbonate resin, polyacetal resin, acrylic resin, Examples include polyethylene terephthalate resins, polybutylene tephthalate resins, polysulfone resins, and polyphenylene sulfide resins.

  EXAMPLES The present invention will next be described in more detail by way of examples, which should not be construed as limiting the invention thereto.

[Measurement and evaluation]
The following measurement and evaluation were performed about the transfer sheet produced by the Example and the comparative example. The results are shown in Table 1.

<Foil dust evaluation>
In order to cut the alignment mark of the transfer sheet produced in the example and the comparative example, the size and the number of the foil dust generated when cut out into 10 cm square were evaluated. When 10 places were cut out, the average of the number of the foil dust of 2 cm square or more was generated was calculated.
A: less than 0.5 B: 0.5 or more and less than 2.0 C: 2.0 or more

<Adhesiveness 1>
After pasting cellophane tape of plant type (Nichiban Co., Ltd., width 25 mm) onto the release sheet of the transfer sheet prepared in the example and comparative example, the tip of the cellophane tape is held and the angle of 45 degrees is maintained. . Tension peeling was performed in 5 seconds, and adhesion was evaluated.
A: Peeled off at the interface between the release sheet and the transfer layer C: Peeled off at the interface between the release sheet and the transfer layer

<Adhesiveness 2>
After pasting cellophane tape of plant type (Nichiban Co., Ltd., width 25 mm) onto the release sheet of the transfer sheet prepared in the examples and comparative examples, the tip of the cellophane tape is held and the angle of 180 degrees is maintained 1 Tension peeling was performed in seconds, and adhesion was evaluated.
A: Peeled off at the interface between the release sheet and the transfer layer C: Peeled off at the interface between the release sheet and the transfer layer

<Clearness of alignment pattern>
The alignment pattern of the transfer sheet produced in the example and the comparative example was photographed with a microphotograph, and the sharpness of the alignment pattern was evaluated. The line widths of the ten colored layers were measured for the sharpness, and the following evaluations were performed.
A: Variation of the line width of the colored layer is 5% or less when the transfer sheet is observed from the plane direction. B: Variation of the line width of the colored layer is 10% or less when the transfer sheet is observed from the plane direction. C: Transfer sheet Fluctuation of line width of colored layer when observed from the plane direction exceeds 10%

Example 1
1. Preparation of Release Sheet A resin layer-forming ink having the following formulation was applied onto a 75 μm-thick polyethylene terephthalate film and dried to form an uncured resin layer having a thickness of 8.0 μm.
<Ink for resin layer formation>
-Ionizing radiation curable resin composition 40 parts by mass (Keiei Kagaku Co., Ltd., acrylic resin)
Photopolymerization initiator 3 parts by mass Methyl ethyl ketone 60 parts by mass Silicone leveling agent 0.5 parts by mass

Then, using a plate having the first region R ₁ and the second region R ₂ and the complementary shape, and at the same time the uncured resin layer to shape, by irradiating ionizing radiation a polyethylene terephthalate film side, The shaped resin layer was cured.
<Shape complementary to the first region R ₁ >
Smooth <shape complementary to second region R ₂ >
· Grooves having a shape complementary to the projections: Width 0.2 mm, depth 7.0 μm
· Spacing between groove ends: 0.6 mm
· Number of grooves: 25 <shape of shaped resin layer>
· Convex part: Width 0.2 mm, height 5.0 μm
・ Space between ends of convex part: 0.6 mm
・ Number of grooves: 24

Next, on the obtained resin layer, the ink for release layer formation of the following formulation is applied over the entire surface, and dried at 40 ° C. for 72 hours to form a release layer having a thickness of 0.5 μm, and a release sheet I got
<Ink for forming release layer>
-Acrylic polyol 70 parts by mass (manufactured by Soken Chemical Co., Ltd., trade name: Thermolac SU100A)
-25 parts by mass of isocyanate (Mitsui Chemical Co., Ltd., trade name: Takenate D-110N)
-Ethyl acetate 161 parts by mass-Methyl isobutyl ketone 56 parts by mass

2. Preparation of Transfer Layer On the release sheet obtained in the above “1”, the protective layer forming ink of the following formulation is applied so that the adhesion amount after drying is 5.0 g / m ² to form a coating film After that, using a fusion UV lamp system, the light source was irradiated under the conditions of H bulb, conveying speed 20 m / min, output 40% to semi-cure the protective layer. It was 15 mJ / m < ² > when the integrating | accumulating light quantity at this time was measured with the luminometer made from Eye Graphics (brand name: UVPF-A1).
<Ink for forming protective layer>
-Urethane acrylate UV curable resin composition 70 parts by mass (manufactured by Dainichi Seisei Co., Ltd., trade name: Seika Beam HT-X)
(Solid content 35%, toluene / ethyl acetate mixed solvent)
· Urethane acrylate UV curable resin composition 30 parts by mass (manufactured by Dainichi Seisei Co., Ltd., trade name: Seika Beam EXF-HT-1)
(Solid content 40%, toluene / methyl ethyl ketone mixed solvent)

Next, the anchor layer forming ink of the following formulation is applied on the protective layer so that the adhesion amount after drying is 3.0 g / m ² to form a coated film, and then dried at 40 ° C. for 72 hours, and cured To form a 2 μm thick anchor layer.
<Ink for forming anchor layer>
-Acrylic polyol 100 parts by mass (manufactured by Dainichi Seisei Co., Ltd., trade name: TM-VMAC, solid content 25%)
(Toluene / ethyl acetate / methyl ethyl ketone mixed solvent)
Xanmethylene diisocyanate 10 parts by mass (manufactured by Dainichi Seika, trade name: PTC-RC3)
(Solid content 75%, solvent: ethyl acetate)
-Solvent 65 parts by mass (methyl ethyl ketone, diluted to 22% solid content)

Next, the adhesive layer forming ink of the following formulation was applied onto the anchor layer so that the adhesion amount after drying was 2.5 g / m ² , to form a coating film. The coated film was dried to form a 2 μm thick adhesive layer, to obtain a transfer sheet.
<Adhesive layer forming ink>
-100 parts by mass of acrylic resin (manufactured by Dainichi Seisei Co., Ltd., trade name: TM-R600, solid content 20%)
(Ethyl acetate / acetic acid-n-propyl / methyl ethyl ketone mixed solvent)
-Methyl ethyl ketone 40 parts by mass-Hydroxyphenyl triazine UV absorber 1.28 parts by mass (manufactured by BASF, trade name: Tinuvin 479)

<Shape of protrusion formed on adhesive layer>
· Height of protrusion: 4.5 μm
-Distance between the end parts of the projecting part: 0.5 mm

Next, on the protruding portion in the adhesive layer, the ink 1 for forming a colored layer according to the following formulation is applied by gravure reverse printing so that the adhesion amount after drying is 1 g / m ^2, and dried; To obtain a transfer sheet of Example 1. The evaluation results of the obtained transfer sheet are shown in Table 1.
<Ink 1 for forming a colored layer>
-Black pigment (carbon black) 4.3 parts by mass-Copolymer of vinyl chloride resin and vinyl acetate resin 1.3 parts by mass-Acrylic resin 5.4 parts by mass-Polymethyl methacrylate resin 7.0 parts Parts and solvent 82 parts by mass (methyl ethyl ketone / ethyl acetate / methyl isobutyl ketone mixed solvent)
(Mixing ratio 4/4/2)

(Example 2)
A transfer sheet of Example 2 was obtained in the same manner as Example 1 except that the heat transfer sheet was used as the method of forming the colored layer, and the heat transfer sheet was used. The evaluation results of the obtained transfer sheet are shown in Table 1.

As a method for producing the thermal transfer sheet used in Example 2, first, a 70 μm thick art paper was dissolved in xylene with a heat-sensitive adhesive of the following composition, and gravure coated at a rate of 20 g / m ^{2 based} on solid content The thermal transfer image-receiving sheet was produced. Subsequently, the gravure reverse printing method is carried out so that the adhesion amount after drying the ink 2 for colored layer formation of the following prescription will be 1.5 g / m ^{2 on} the surface of a 6 μm thick polyester film having a heat resistant layer formed on the back surface. And dried to prepare a thermal transfer sheet.
<Thermosensitive adhesive>
-Styrene butadiene rubber 2.4 parts by mass (Asahi Kasei, trade name: Solprene 1204)
-2.0 parts by mass of chlorinated polypropylene (made by Sanyo Kokusaku Pulp, trade name: Super Kron 907 LL)
・ Vinyl chloride / vinyl acetate copolymer 10.0 parts by mass (manufactured by Sumitomo Chemical, trade name: Sumitate KC10)
・ Petroleum resin 5.0 parts by mass (manufactured by Nippon Oil Co., Ltd., trade name: Neopolymer 130)
・ Micro silica 0.4 part by mass (made by Degussa, trade name: Erosil OK-412)
-Polyethylene wax 1.5 parts by mass (Goodyear, product name: Microfine SF Gold)
-Amide wax 1.5 parts by mass (made by Denka Polymer, trade name: AP65)
-Toluene 80.0 parts by mass <ink for forming a colored layer 2>
-Black pigment (carbon black) 4.3 parts by mass-Copolymer of vinyl chloride resin and vinyl acetate resin 1.3 parts by mass-Acrylic resin 5.4 parts by mass-Polymethyl methacrylate resin 7.0 parts by mass- Polyethylene wax 0.8 parts by mass (manufactured by BASF, trade name: A wax)
· Solvent 81.2 parts by mass (methyl ethyl ketone / ethyl acetate / methyl isobutyl ketone mixed solvent)
(Mixing ratio 4/4/2)

(Comparative example 1)
1. Preparation of Release Sheet The heat transfer sheet obtained by using the thermal transfer sheet obtained in Example 2 on the convex portion provided in the second region of the resin layer of the release sheet obtained in “1” of Example 1 is a melting thermal transfer method To form a colored layer. A release sheet was produced in the same manner as in Example 1 except for the above.

2. Preparation of Transfer Layer The protective layer, the anchor layer and the adhesive layer shown in Example 1 were sequentially laminated on the release sheet and the colored layer obtained in the above “1” to prepare a transfer layer.
The transfer sheet of Comparative Example 1 was obtained by the above steps. The evaluation results of the obtained transfer sheet are shown in Table 1.

<Shape of protrusion formed on adhesive layer>
· Height of protrusion: 4.7 μm
-Distance between the end parts of the projecting part: 0.5 mm

  The transfer sheet of the present invention can be suitably used for the production of a communication molded article such as a mobile phone, an information apparatus inside an automobile, a decorative molded article such as a home appliance.

1: Support 2: Resin layer 3: Release layer 4: Convex part 5: Irregular part 10: Release sheet 20: Transfer layer 21: Protective layer 22: Adhesive layer 23: Projection part 30: Colored layer 100: Transfer Sheet

Claims (12)

A transfer sheet having a transfer layer on a release sheet, wherein
The release sheet has a first area for transfer to a transfer target and a second area for providing an alignment pattern, and the second area has a convex portion on the surface side of the transfer layer side. Have
The transfer layer includes an alignment pattern portion having a protrusion based on the protrusion on a surface opposite to the surface on which the release sheet is provided, and a transfer layer having a colored layer on the protrusion Sheet.   The transfer sheet according to claim 1, wherein a height of the protrusion is 1.0 μm or more.   The transfer sheet according to claim 1, wherein a distance between end portions of the protruding portion is 0.05 to 3.0 mm.   The transfer according to any one of claims 1 to 3, wherein the colored layer is a line-like pattern having an average line width of 0.01 to 4.0 mm, and the fluctuation of the line width is within 10%. Sheet.   The thickness of the said colored layer is 0.3-5.0 micrometers, The transfer sheet of any one of Claims 1-4.   The transfer sheet according to any one of claims 1 to 5, wherein the release sheet has a release layer on at least a part of the side in contact with the transfer layer.   The transfer sheet according to any one of claims 1 to 6, wherein the transfer layer has a protective layer on the release sheet side.   The transfer sheet according to claim 7, wherein the protective layer comprises a cured product of an ionizing radiation curable resin composition. Applying a resin layer forming ink containing an ionizing radiation curable resin composition on a support to form an uncured resin layer;
Forming an uncured resin layer using a plate having a shape complementary to the first region and the second region, and at the same time irradiating ionizing radiation to cure the shaped resin layer;
Applying a release layer forming ink onto the cured resin layer to form a release layer;
Applying a protective layer forming ink containing an ionizing radiation curable resin composition onto the release layer to form a protective layer;
Applying an adhesive layer-forming ink onto the protective layer to form an adhesive layer;
Applying a colored layer forming ink on a protrusion formed at a position corresponding to the second region in the adhesive layer to form a colored layer; Production method.   The method for producing a transfer sheet according to claim 9, wherein the step of forming the colored layer is formed by a transfer method.   The method for producing a transfer sheet according to claim 9, wherein the step of forming the colored layer is formed by a printing method.   The manufacturing of a decorated molded article which has the process of transferring the transfer layer of the transfer sheet of any one of Claims 1-8 to a material being transferred, and the process of exfoliating the release sheet of the transfer sheet. Method.