JP6812853B2 - A transfer sheet, a method for manufacturing a decorative molded product using the transfer sheet, and a mold for molding the transfer sheet. - Google Patents

Description

The present invention relates to a transfer sheet, a method for producing a decorative molded product using the transfer sheet, and a molding mold for the transfer sheet.

Conventionally, in the fields of household electric appliances, automobile interior parts, miscellaneous goods, etc., high functionality and design have been exhibited by decorating the surface of the object to be transferred with characters, patterns, and the like.

As a method of decorating the surface of the object to be transferred, there is a transfer method. The transfer method uses a transfer sheet in which a transfer layer composed of a release layer, a pattern layer, an adhesive layer, etc. is formed on a substrate, and is heated and pressed to bring the transfer layer into close contact with the object to be transferred, and then the substrate is pressed. This is a method of peeling off and transferring only the transfer layer to the surface of the object to be transferred for decoration.

Further, depending on the application, excellent designability in which different textures such as glossiness and matteness are mixed on the surface of the object to be transferred may be required.
For example, Patent Document 1 describes a release layer containing a matting agent entirely on a substrate sheet, a mask layer partially containing an active energy ray-curable resin, and a release layer and a design layer as transfer layers. A partially matte transfer sheet characterized by the formation of the above is disclosed.

Japanese Patent No. 5095598

However, the partially matte transfer sheet of Patent Document 1 may have a streak-like pattern of unknown cause on the surface of the transfer layer transferred to the surface of the object to be transferred. The streak-like pattern lowers the design of the decorative molded product and lowers the yield.

The present invention has been made in view of such circumstances, and provides a transfer sheet from which a decorative molded product having excellent design and yield can be obtained, and a method for manufacturing a decorative molded product using the transfer sheet. That is the issue.

In order to solve the above problems, the present invention provides the following [1] to [3].
[1] A transfer sheet having a transfer layer on the release sheet, the surface of the release sheet on the side in contact with the transfer layer is a first region X and a second region adjacent to the first region X. The arithmetic mean roughness Ra ₁ at a cutoff value of 0.8 mm of the first region X, which has Y and is measured according to JIS B0601: 1994, and is measured according to JIS B0601: 1994. The arithmetic mean roughness Ra ₂ at the cutoff value of 0.8 mm of the second region Y satisfies the relationship of Ra ₁ > Ra ₂ , and the cutoff of the first region is measured according to JIS B0601: 1994. It means a roughness Rz ₁ ten-point with a value 0.8 mm, the Ra ₁ and satisfies the relation of _{2.0 ≦ Rz 1 / Ra 1 ≦} 15.0, the transfer sheet.
[2] A method for producing a decorative molded product, comprising a step of transferring the transfer layer of the transfer sheet according to the above [1] to an object to be transferred and a step of peeling off the release sheet of the transfer sheet.
[3] A molding mold, wherein the mold has a first region X'having an uneven portion on the surface and a second region Y'adjacent to the first region, and is JIS B0601: and 'arithmetic mean roughness Ra at a cutoff value 0.8mm of' ₁ the first region X which is measured according to 1994, JIS B0601: cutoff of the second region Y ', which is measured according to 1994 arithmetic average roughness Ra of the value 0.8 mm 'and _2, Ra'_1> Ra 'satisfy the _second relation, JIS B0601: the is measured according to 1994 first region X' cut-off value of 0. the average 'and _1, wherein Ra' roughness Rz ten point at 8 mm ₁ and satisfies the relation of 2.0 ≦ Rz _'1 / Ra' ₁ ≦ 15.0, type molding.

According to the present invention, it is possible to provide a transfer sheet capable of obtaining a decorative molded product having excellent design and yield. Further, according to the present invention, it is possible to easily manufacture a decorative molded product having excellent design and yield.

It is sectional drawing which shows one Embodiment of the transfer sheet of this invention. It is a top view which shows one Embodiment of the release sheet which comprises the transfer sheet of this invention.

[Transfer sheet]
The transfer sheet of the present invention is a transfer sheet having a transfer layer on the release sheet, and the surface of the release sheet on the side in contact with the transfer layer is adjacent to the first region X and the first region X. The second region Y is provided, and the arithmetic mean roughness Ra ₁ at a cutoff value of 0.8 mm of the first region X measured according to JIS B0601: 1994 and JIS B0601: 1994. The arithmetic mean roughness Ra ₂ at a cutoff value of 0.8 mm in the second region Y satisfies the relationship of Ra ₁ > Ra ₂ , and is measured according to JIS B0601: 1994. a ten-point average roughness Rz ₁ of the cut-off value 0.8mm region, the Ra ₁ and is intended to satisfy the relation of _{2.0 ≦ Rz 1 / Ra 1 ≦} 15.0.

FIG. 1 is a cross-sectional view showing an embodiment of the transfer sheet of the present invention.
The transfer sheet 100 of FIG. 1 has a transfer layer 20 on the release sheet 10. Further, the release sheet 10 of FIG. 1 is composed of a support 11 and a resin layer 12, and the surface of the release sheet 10 on the side in contact with the transfer layer 20 is a first region X and a first region. It has a second region Y adjacent to X. Further, the transfer layer 20 of FIG. 1 has a protective layer 21 and an adhesive layer 22 located on the opposite side of the protective layer 21 from the release sheet 10.

<Release sheet>
The release sheet has a first region X and a second region Y on the surface on the transfer layer side. The release sheet is peeled off after the transfer layer is transferred to an object to be transferred such as a resin molded body.

<First region X and second region Y>
The surface of the release sheet 10 on the side in contact with the transfer layer has a first region X and a second region Y adjacent to the first region X.

The arrangement of the first region X and the second region Y is arbitrary. For example, the first region X is arranged at the center of the release sheet 10 and the second region Y is arranged at the peripheral portion (configuration of FIG. 2); the second region Y is arranged at the center of the release sheet 10 and the second region Y is located at the peripheral portion. Configuration in which one region X is arranged; Configuration in which the first region X and the second region Y are arranged in parallel; A plurality of independent first regions X are arranged near the center of the release sheet 10, and the plurality of first regions X are arranged. A configuration in which the second region Y is arranged around the first region X; a plurality of independent second regions Y are arranged near the center of the release sheet 10, and the first region X is arranged around the plurality of second regions Y. The configuration to be arranged; etc. may be mentioned.
The release sheet may have another region on the surface in contact with the transfer layer.

The shape of the surface of the transfer layer after the transfer layer is transferred to the transfer material has a shape complementary to the surface shape of the release sheet. That is, the surface shapes of the first region X and the second region Y of the release sheet correspond to the surface shapes formed on the surface of the transfer material.
Therefore, the arithmetic mean roughness Ra ₁ at a cutoff value of 0.8 mm of the first region X measured according to JIS B0601: 1994 and the cutoff of the second region Y measured according to JIS B0601: 1994. The fact that the arithmetic mean roughness Ra ₂ at a value of 0.8 mm satisfies the relationship of Ra ₁ > Ra ₂ means that two regions having different surface shapes can be formed on the transferred material. Then, the design of the transferred object can be improved by satisfying the relationship of Ra ₁ > Ra ₂ and forming two regions having different surface shapes with respect to the transferred object.

When the relationship of Ra ₁ > Ra ₂ is satisfied, the designability of the transferred product can be improved as described above. However, when the transfer layer is transferred to the object to be transferred using a transfer sheet satisfying the relationship of Ra ₁ > Ra ₂ , the surface of the transfer layer may have a streak-like pattern of unknown cause. The streak-like pattern lowers the design of the decorative molded product and lowers the yield.
In the present invention, the ratio [Rz ₁ / Ra ₁ ] of the ten-point average roughness Rz ₁ to Ra ₁ at a cutoff value of 0.8 mm in the first region measured according to JIS B0601: 1994 is 15. By setting it to 0 or less, the streak-like pattern is suppressed.

The reason why the streak-like pattern can be suppressed by setting Rz ₁ / Ra ₁ to 15.0 or less is considered as follows.
First, it is considered that the cause of the streak-like pattern is that the peel strength at the time of peeling the release sheet changes rapidly at the boundary between the first region and the second region. For example, when the peeling strength suddenly increases when switching from the second region to the first region, the peeling stops momentarily or the peeling speed suddenly slows down. It is considered that a streak-like pattern is formed on the surface of the transfer layer due to such a momentary stop of peeling or a sudden change in the peeling speed.
When the relationship of Ra ₁ > Ra ₂ is satisfied, the contact area of the first region with the transfer layer is larger than that of the second region. Therefore, in principle, when the first region is peeled off. The peel strength is larger than the peel strength when peeling the second region. Further, when the randomness of the unevenness of the first region is too large, the transfer layer tends to bite into the high peaks and / or deep valleys of the first region, and the peel strength of the first region becomes higher.
In the present invention, "Rz ₁ / Ra ₁ " is adopted as an index of the randomness of the unevenness, and Rz ₁ / Ra _{1 is set} to 15.0 or less to suppress the randomness of the unevenness of the first region. It is possible to suppress an increase in the peel strength of the material and suppress a streak-like pattern.
The streak-shaped patterns include "a configuration in which the first region X is arranged in the center of the release sheet and the second region Y is arranged in the peripheral portion", and "a plurality of independent first regions X near the center of the release sheet". Is particularly likely to occur in the "configuration in which the second region Y is arranged around the plurality of first regions X", but in the present invention, it is possible to suppress the occurrence of a streak-like pattern even in such a configuration.

Further, in the present invention, Rz ₁ / Ra _{1 is set} to 2.0 or more.
By setting Rz ₁ / Ra ₁ to 2.0 or more, a certain degree of randomness can be imparted to the unevenness of the first region, and defects in the first region can be made less noticeable. In addition, since defects are less noticeable, it is possible to suppress a decrease in the design and yield of the decorative molded product.
Rz ₁ / Ra ₁ is preferably 3.0 to 10.0, more preferably 3.5 to 8.0, and even more preferably 4.0 to 7.0.

The degree of unevenness of the first region X and the second region Y is not particularly limited because it differs depending on the purpose (design, antiglare, etc.), but is not particularly limited, but is "Ra _1- Ra ₂ ", "Ra ₁ ", "Ra". ₂ ”and“ Rz ₁ ”are preferably in the following ranges.
In the present invention, Ra and Rz cut out a sample of 3.3 cm × 3.3 cm from a portion corresponding to the first region and the second region of the release sheet, and 10 points in the vertical direction of the sample at intervals of 0.3 cm. Measurement, 10 points are measured in the lateral direction of the sample at intervals of 0.3 cm, and the average value of the measured values of 20 points in total is used. The sample shall be cut out from a place where there are no abnormal points such as dust and scratches visually.

Ra _1- Ra ₂ is preferably 0.05 to 1.00 μm, more preferably 0.07 to 0.80 μm, and even more preferably 0.12 to 0.30 μm.
By setting Ra _1- Ra ₂ to 0.05 μm or more, the contrast between the first region and the second region (for example, the contrast such as antiglare and glossiness) becomes clear, and the design is improved. Can be done. Further, by setting Ra _1- Ra ₂ to 1.00 μm or less, it is possible to easily suppress the occurrence of a streak-like pattern.
In addition, in this specification, "AA-BB" means "AA or more and BB or less". The same applies hereinafter.

Ra ₁ is preferably 0.06 to 1.20 μm. By setting Ra ₁ to the above range, it is possible to easily improve the balance between the design property, the antiglare property and the whitening suppression of the transferred material.
Ra ₁ is more preferably 0.10 to 1.00 μm, further preferably 0.13 to 0.50 μm, and even more preferably 0.15 to 0.35 μm.

Rz ₁ is preferably 0.25 to 5.00 μm, more preferably 0.50 to 2.50 μm, and even more preferably 1.00 to 2.00 μm.
By setting Rz ₁ to 0.25 μm or more, when a defect such as a scratch occurs in the first region X, the defect can be made inconspicuous and the yield can be improved. Further, by setting Rz ₁ to 5.00 μm or less, deterioration of the design of the transferred material can be suppressed. Further, by setting Rz ₁ to 5.00 μm or less, when the transferred material is used on the front surface of a display element such as a liquid crystal display element, whitening and glare can be suppressed. In addition, "glare" refers to a phenomenon in which minute variations in brightness are visible in the image light due to the uneven structure.

The second region Y may have no uneven portion and may be substantially smooth, or may have an uneven portion like the first region X.
Ra ₂ is preferably less than 0.10 μm, more preferably 0.07 μm or less, still more preferably 0.05 μm or less, from the viewpoint of clarifying the contrast with the first region X. ..
When Ra ₂ is in the above range, the difference in peel strength between the first region X and the second region Y tends to be large, and a streak-like pattern tends to occur. However, in the present invention, it tends to occur. By setting Rz ₁ / Ra ₂ in the above range, the occurrence of streak-like patterns is suppressed.

The area S ₁ of the first region X, the ratio of the area S ₂ of the second region Y _[S 2 _/ S _1] is not particularly limited to changes in relation to the design of imparting a first region X From the viewpoint of clarifying the contrast between the second region Y and the second region Y, it is preferable to satisfy the relationship of 0.1 ≦ S ₂ / S ₁ . Further, from the viewpoint of providing excellent antiglare properties of the decorative molded article, furthermore, it is preferable to satisfy a relation of S 2 _/ S ₁ ≦ 7.0.

The release sheet 10 can be composed of, for example, a support 11 and a resin layer 12 as shown in FIG. Of course, the release sheet may be a single layer of a support or a resin layer, or may have a configuration of three or more layers having a layer other than the support and the resin layer.
Further, although not shown, the release sheet preferably has a release layer on the surface on the transfer layer side.

<Support>
Examples of the support include polyolefin resins such as polyethylene and polypropylene, polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, ethylene / vinyl acetate copolymers, vinyl resins such as ethylene / vinyl alcohol copolymers, polyethylene terephthalates, and polyethylene. Represented by polyester resins such as 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. Examples thereof include a plastic film made of a resin such as a polyamide resin.
Among these plastic films, a biaxially stretched polyester film having excellent heat resistance and dimensional stability and excellent alignment during transfer is preferable.

The thickness of the support is preferably 12 to 150 μm, more preferably 25 to 100 μm, from the viewpoint of moldability, shape followability, and handling.
Further, on the surface of the support 11, in order to enhance the adhesiveness with the resin layer 12 and the like, physical treatment such as corona discharge treatment and oxidation treatment, and coating of a paint called an anchor agent or a primer are performed in advance. May be good.

When the release sheet is composed of a single layer of the support, the surface of the support may be shaped by using a plate having a shape complementary to the first region X and the second region Y.

<Resin layer>
The resin layer preferably contains 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 as a main component. The main component means 50% by mass or more of the total solid content constituting the resin layer, and the ratio is preferably 70% by mass or more, and more preferably 90% by mass or more.
Among the above resin components, a cured product of an ionizing radiation curable resin composition which is excellent in strength and can impart an accurate and precise shape because it cures instantly is preferable. Further, from the viewpoint of facilitating 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 in the total resin components constituting the resin layer. It is more preferably contained in an amount of 9% by mass or more, further preferably 95% by mass or more, and further preferably 100% by mass or more.

The resin layer may be formed by applying a coating liquid containing particles and a binder resin, but the shape is complementary to the first region X and the second region Y from the viewpoint of forming an accurate and precise shape. It is preferably formed by printing using a plate having. When the resin layer has other regions, it is preferable that the plate has a shape complementary to the other regions. Further, when the release sheet has another layer such as a release layer on the resin layer, a plate having a shape in consideration of alleviating unevenness by the other layers may be used. Details of the method for forming the resin layer using the plate will be described later.
When the resin layer is formed by coating, the particles contained in the coating liquid are not a little easily aggregated, and various measures are required to suppress the increase in Rz / Ra, which is preferable because the process is complicated. Absent.

The thermosetting resin composition is a composition containing at least a thermosetting resin, and is a resin composition that is cured by heating. Examples of the thermosetting resin include acrylic resin, urethane resin, phenol resin, urea melamine resin, epoxy resin, unsaturated polyester resin, and silicone resin. 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 an ethylenically unsaturated group such as a (meth) acryloyl group, a vinyl group and an allyl group, an epoxy group and an 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 thermosetting resin, a compound having two or more ethylenically unsaturated bonding groups is more preferable, and among them, ethylenically unsaturated. Polyfunctional (meth) acrylate compounds having two or more saturated bond groups are more preferred. As the polyfunctional (meth) acrylate compound, either a monomer or an oligomer can be used.
The ionizing radiation means an electromagnetic wave or a charged particle beam having an energy quantum capable of polymerizing or cross-linking a molecule, and usually, an ultraviolet ray (UV) or an electron beam (EB) is used. Electromagnetic waves such as X-rays and γ-rays, and charged particle rays such as α-rays and ion rays can also be used.

Among the polyfunctional (meth) acrylate-based compounds, the bifunctional (meth) acrylate-based monomers include ethylene glycol di (meth) acrylate, bisphenol A tetraethoxydiacrylate, bisphenol A tetrapropoxydiacrylate, and 1,6-hexane. Examples thereof include diol diacrylate.
Examples of the trifunctional or higher functional (meth) acrylate-based monomer include trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate, and di. Examples thereof include pentaerythritol tetra (meth) acrylate and isocyanuric acid-modified tri (meth) acrylate.
Further, the (meth) acrylate-based monomer may have a part of the molecular skeleton modified, and is modified with ethylene oxide, propylene oxide, caprolactone, isocyanuric acid, alkyl, cyclic alkyl, aromatic, bisphenol and the like. Can also be used.

Examples of the polyfunctional (meth) acrylate-based oligomer include acrylate-based polymers such as urethane (meth) acrylate, epoxy (meth) acrylate, polyester (meth) acrylate, and polyether (meth) acrylate.
Urethane (meth) acrylates are obtained, for example, by reacting polyhydric alcohols and organic diisocyanates with hydroxy (meth) acrylates.
Further, the preferable epoxy (meth) acrylate is a (meth) acrylate obtained by reacting a (meth) acrylic acid with a trifunctional or higher functional aromatic epoxy resin, an alicyclic epoxy resin, an aliphatic epoxy resin or the like, and a bifunctional epoxy resin. (Meta) acrylate 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 higher functional aromatic epoxy resin, It is a (meth) acrylate obtained by reacting an alicyclic epoxy resin, an aliphatic epoxy resin or the like with phenols and (meth) acrylic acid.
The ionizing radiation curable resin may be used alone or in combination of two or more.

When the ionizing radiation curable resin is an ultraviolet curable resin, the coating liquid for forming the resin layer preferably 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 ketone, benzoin, benzyl dimethyl ketal, benzoyl benzoate, α-acyl oxime ester, thioxanthones and the like.
Further, the photopolymerization accelerator can reduce the polymerization inhibition by air at the time of curing and accelerate the curing rate. For example, from p-dimethylaminobenzoic acid isoamyl ester, p-dimethylaminobenzoic acid ethyl ester and the like. One or more selected species can be mentioned.

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

From the viewpoint of improving the releasability between the release sheet and the transfer layer, it is preferable that the resin layer does not substantially contain particles. Specifically, the content of the particles in the resin layer is preferably less than 1% by mass, more preferably less than 0.1% by mass, still more preferably less than 0.01% by mass. It is even more preferably 0% by mass.

<Release layer>
The interface between the release sheet and the transfer layer is formed so that it can be peeled off when it comes into close contact with the transfer material.
In order to improve the release property, the release sheet preferably has a release layer on at least a part of the surface on the side in contact with the transfer layer. Further, from the viewpoint of making the in-plane releasability of the transfer sheet uniform, it is preferable that the release sheet has a release layer on the entire surface of the surface in contact with the transfer layer.
Further, by forming the release layer on the uneven portion of the first region X, it is possible to form an uneven shape with few high frequency components on the surface of the transferred object, and it is possible to suppress whitening and glare of the transferred object. ..

The release layer is preferably composed mainly of resin.
The resin of the release layer is not particularly limited as long as it is a material having a predetermined film strength and low adhesive strength to the transfer layer, and is a general-purpose thermoplastic resin, a cured product of a thermosetting resin composition, and ionizing radiation. Examples thereof include a cured product of a curable resin composition. Specifically, fluorine-based resin, silicone-based resin, acrylic-based resin, polyester-based resin, polyolefin-based resin, polystyrene-based resin, polyurethane-based resin, cellulose-based resin, vinyl chloride-vinyl acetate-based copolymer resin, nitrified cotton. And so on.
Among these, a cured product of the thermosetting resin composition is preferable, and a thermosetting resin composition containing an acrylic polyol and an isocyanate is more preferable.

The release layer may further contain a release agent to improve releasability. Examples of the release agent include waxes such as synthetic wax and natural washes. As the synthetic wax, a polyolefin wax such as polyethylene wax or polypyrene wax is preferable.

The thickness of the release layer is preferably 0.1 to 5.0 μm, more preferably 0.2 to 1.5 μm, and even more preferably 0.3 to 1.0 μm.
The thickness of the release layer is, for example, the average when a cross-sectional photograph of a cross section obtained by vertically cutting the central portion of the release sheet is taken and the thickness of the release layer is measured at at least 20 points at intervals of 500 μm from the cross-sectional photograph. It can be calculated as a value.

The release sheet may have other layers.
Examples of the other layer include an antistatic layer. By having the antistatic layer, peeling charge when peeling the release sheet can be suppressed, and transfer workability can be improved.

The antistatic layer preferably contains an antistatic agent such as an electron conduction type antistatic agent and an ion conduction type 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 surface resistivity of the antistatic layer is preferably adjusted to the range of 1.0 × 10 ^-9 Ω / □ to 1.0 × 10 ^-12 Ω / □.
In addition, an antistatic agent may be contained in another layer such as a resin layer to exhibit antistatic properties.

<Manufacturing method of release sheet>
The release sheet having the first region X and the second region Y can be produced, for example, by the following steps (A1) to (A2).

(A1) A step of applying a resin layer forming coating solution containing an ionizing radiation curable resin composition onto a support to form a layer containing the ionizing radiation curable resin composition.
(A2) Using a plate having a shape complementary to the first region X and the second region Y, the uncured resin layer is shaped, and at the same time, ionizing radiation is irradiated to cure the shaped resin layer. Process.

When the ionizing radiation curable resin composition contains a solvent, it is preferable to dry the solvent in the step (A1).
When the release sheet has a release layer, a step of forming a release layer on the resin layer (A3) may be performed after the step (A2).

When the release sheet has other regions, a plate having a shape complementary to the first region X, the second region Y, and the other regions may be used as the plate for the step (A2).

The plate used in the step (A2) can be obtained by engraving the surface of the cylinder into a desired shape by, for example, etching, sandblasting, cutting and laser processing, or a combination thereof. Alternatively, a long male plate (a plate having the same shape as the first region X and the second region Y) is produced by laser engraving, stereolithography, etc., and the inverted version is wound around the surface of the cylinder. Can be obtained by
The surface of the plate used in the step (A2) is preferably hard-plated with chrome or the like.

Among the above-mentioned plate-making means, sandblasting is preferable from the viewpoint of easy control of Rz ₁ / Ra ₁ , which is an index of the randomness of unevenness.
In sandblasting, for example, the material of the cylinder surface, the particle size of the abrasive, the material of the abrasive, the number of collisions of the abrasive with the cylinder, the distance between the injection nozzle and the cylinder, the injection pressure, the injection frequency, etc. are controlled. The uneven shape can be adjusted.
Among the control means described above, the "number of collisions of the abrasive with the cylinder" is the simplest and most effective for controlling Rz ₁ / Ra ₁ . That is, when the number of times the abrasive material collides with the cylinder surface is small, Rz ₁ / Ra ₁ tends to increase, and as the number of times the abrasive material collides with the cylinder surface increases, Rz ₁ / Ra ₁ tends to decrease. However, even if the number of collisions is increased and Rz ₁ / Ra ₁ becomes smaller, there is a limit, and the decrease in Rz ₁ / Ra ₁ gradually becomes saturated.
Further, when the material of the cylinder surface is hardened, it becomes difficult for the cylinder to be deeply scraped by the abrasive, so that Rz ₁ / Ra ₁ tends to be small.
Further, when the particle size of the abrasive is large, the unevenness is averaged and Rz ₁ / Ra ₁ tends to be small. Further, when the shape of the abrasive is spherical, it becomes difficult to form specific unevenness, the unevenness is averaged, and Rz ₁ / Ra ₁ tends to be small.
Further, when the distance between the injection nozzle and the cylinder is shortened, both Ra ₁ and Rz ₁ tend to increase, and the rate of increase is about the same. That is, even if the distance between the injection nozzle and the cylinder is changed, Rz ₁ / Ra ₁ tends to show substantially the same value.
Further, when the injection pressure is increased, both Ra ₁ and Rz ₁ tend to increase, and the rate of increase is about the same. That is, even if the injection pressure is fluctuated, Rz ₁ / Ra ₁ tends to show substantially the same value.

When another layer such as a release layer is formed on the resin layer, the surface unevenness of the release sheet is lessened than the surface unevenness of the resin layer. Therefore, when the other layer is formed on the resin layer, the plate used in the step (A2) may be a plate having a shape in consideration of alleviating unevenness.
For example, when a release layer having a thickness of 0.4 μm is formed on the resin layer, Ra and Rz on the surface of the release layer are about 60% of the surface of the resin layer, and the release layer having a thickness of 0.8 μm is separated on the resin layer. When forming a mold layer, Ra and Rz on the surface of the release layer are about 50% of the surface of the resin layer, and when forming a release layer having a thickness of 1.3 μm on the resin layer, the surface of the release layer Ra and Rz have a size of about 40% of the surface of the resin layer. The above ratio is a guide, and may vary slightly depending on conditions such as the viscosity of the release layer coating liquid.
The reduction rates of Ra and Rz when the other layers are formed on the resin layer are substantially the same. Therefore, Rz / Ra on the surface of the resin layer and Rz / Ra on the other layers have substantially the same value. Therefore, the value of Rz / Ra can be roughly adjusted by the shape of the mold.

The release sheet can also be produced by, for example, the following steps (B1) to (B2).
(B1) A step of filling a plate having a shape complementary to the first region X and the second region Y with a coating liquid for forming a resin layer.
(B2) A step of transferring the coating liquid for forming a resin layer filled in a plate onto a support, drying and curing as necessary to form a resin layer.

From the viewpoint of forming an accurate and precise shape, the above-mentioned steps (A1) to (A2) are suitable.

<Transfer layer>
A transfer layer is formed on the release sheet.
The transfer layer 20 is a layer to be transferred to the object to be transferred, and is formed so as to cover the first region X and the second region Y, for example, as shown in FIG. Further, as shown in FIG. 1, for example, the transfer layer 20 has a protective layer 21 and an adhesive layer 22 in order from the side closer to the release sheet 10.

<Protective layer>
The protective layer constituting the transfer layer is a layer containing a cured product of the curable resin composition. The protective layer has a role of protecting the decorative molded product from abrasion, light, chemicals, etc. after the transfer layer is transferred from the transfer sheet to the object to be transferred.

The protective layer preferably contains a cured product of the curable resin composition as a main component. The main component means 50% by mass or more of the total solid content constituting the protective layer, and the ratio is preferably 70% by mass or more, more preferably 80% by mass or more, and 90% by mass or more. Is even more preferable.
Examples of the cured product of the curable resin composition include a cured product of the thermosetting resin composition and a cured product of the ionizing radiation curable resin composition, and among these, the cured product of the ionizing radiation curable resin composition is preferable.
Further, the protective layer may contain a thermoplastic resin, but the amount thereof is preferably a small amount from the viewpoint of improving scratch resistance. Specifically, the content of the thermoplastic resin in the protective layer is preferably less than 5% by mass, more preferably less than 1% by mass, and even more preferably less than 0.1% by mass. It is even more preferably 0% by mass.

The embodiment of the curable resin composition of the protective layer is the same as the embodiment of the curable resin composition of the resin layer described above.
The curable resin composition is left in a semi-cured state at the time of forming the protective layer, and after being transferred to the transferred material, the curable resin composition is cured by heating, irradiation with ionizing radiation, or the like. , May be completely cured. By doing so, the followability of the transfer sheet to the transferred material is improved, so that the moldability can be improved. Further, the curable resin composition is kept in a semi-cured state at the time of forming the protective layer, transferred to the transferred material, the release sheet is peeled off, and then the curable resin composition is heated, irradiated with ionizing radiation, or the like. By advancing the curing and completely curing it, the stress can be easily relaxed, and the generation of streak-like patterns can be further suppressed.

Particles such as organic particles and inorganic particles may be contained in the protective layer. By containing the particles in the protective layer, glare and defects can be made less noticeable due to the expression of internal haze due to the difference in refractive index from the resin component. These particles may be contained in an adhesive layer, an anchor layer, etc., which will be described later, for the same purpose.

Examples of the organic particles include particles composed of polymethylmethacrylate, polyacrylic-styrene copolymer, melamine resin, polycarbonate, polystyrene, polyvinyl chloride, benzoguanamine-melamine-formaldehyde condensate, silicone, fluororesin, polyester resin and the like. Can be mentioned.
Examples of the inorganic particles include particles made of silica, alumina, antimony, zirconia, titania and the like.

The average particle size of the particles is preferably 0.05 to 5.0 μm, more preferably 0.5 to 3.0 μm.
In the present specification, the average particle size is 50% particle size (d50: median size) when the particles in a solution are measured by a dynamic light scattering method and the particle size distribution is expressed by a volume cumulative distribution. The 50% particle size can be measured using, for example, 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.

The thickness of the protective layer is preferably 0.5 to 30 μm, more preferably 1 to 20 μm, and even more preferably 3 to 10 μm from the viewpoint of the balance between surface hardness and moldability.

<Adhesive layer>
The adhesive layer has a role of improving the adhesiveness between the object to be transferred such as a resin molded product and the transfer layer, and improving the transfer work.
If the adhesiveness between the protective layer and the object to be transferred is good, it is not necessary to provide the adhesive layer.

For the adhesive layer, it is preferable to use a heat-sensitive or pressure-sensitive resin suitable for the material of the transferred material. For example, when the material of the object to be transferred is an acrylic resin, it is preferable to use an acrylic resin. When the material of the object to be transferred is a polyphenylene oxide polystyrene resin, a polycarbonate resin, or a styrene resin, an acrylic resin, polystyrene resin, polyamide resin, or the like having an affinity for these resins should be used. Is preferable. Further, when the material of the transferred material is polypropylene resin, it is preferable to use chlorinated polyolefin resin, chlorinated ethylene-vinyl acetate copolymer resin, cyclized rubber, and kumaron inden resin.
Additives such as an ultraviolet absorber and an infrared absorber may be blended in the adhesive layer.
The thickness of the adhesive layer is preferably 0.1 to 10 μm, more preferably 0.5 to 5 μm.

<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 and the adhesive layer.

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.
The embodiment of the thermosetting resin composition and the ionizing radiation curable resin composition of the anchor layer is the same as the embodiment of the thermosetting resin composition and the ionizing radiation curable resin composition of the resin layer.
The thickness of the anchor layer is preferably 0.1 to 6 μm, more preferably 0.5 to 5 μm.

<Print layer>
The transfer layer may further have a print layer. The printed layer has a role of imparting a desired design property to the decorative molded product.
The pattern of the printing layer is arbitrary, and examples thereof include wood grain, stone grain, cloth grain, sand grain, circle, quadrangle, polygon, geometric pattern, character, and solid printing.

The printing layer preferably contains a binder resin such as a polyvinyl resin, a polyester resin, an acrylic resin, a polyvinyl acetal resin, and a cellulosic resin, and a pigment and / or a dye.
The thickness of the print layer is preferably 0.5 to 40 μm, more preferably 1 to 30 μm from the viewpoint of designability.

For each layer such as the protective layer, the adhesive layer, the anchor layer, and the printing layer constituting the transfer layer, for example, a coating liquid containing the constituent components of each layer is adjusted, and a gravure coating method, a roll coating method, etc. are applied on the release sheet. It can be formed by applying and drying by a printing method such as a coating method, a gravure printing method, or a screen printing method, and curing by irradiating ionizing radiation as necessary.

[Manufacturing method of decorative molded products]
The method for producing a decorative molded article of the present invention includes a step of transferring the transfer layer of the transfer sheet of the present invention described above to an object to be transferred, and a step of peeling off the release sheet of the transfer sheet.
Examples of the transferred product include a resin molded product and the like.

A known transfer method can be used as a method for producing a decorative molded product. For example, (i) a method of attaching a transfer sheet to a preformed object to be transferred, transferring the transfer layer of the transfer sheet, and then peeling off the release sheet of the transfer sheet, (ii) a flat plate-shaped cover. A method of attaching a transfer sheet to a transfer product, transferring the transfer layer of the transfer sheet, peeling off the release sheet of the transfer sheet, and then molding the transferred product on which the transfer layer is laminated, (iii). ) A method of integrating the transferred material with the transfer sheet at the time of injection molding and then 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 is possible to perform decoration molding on a resin molded body having a complicated surface shape such as a three-dimensional curved surface.

As one embodiment of the method for producing a decorative molded product using the transfer sheet of the present invention by in-mold molding,
(Z1) A step of arranging the transfer layer side of the transfer sheet toward the inside of the in-mold molding mold, and
(Z2) The step of injecting resin into the in-mold molding mold and
(Z3) A step of integrating the transfer sheet and the resin to transfer the transfer layer of the transfer sheet onto the surface of the resin molded product (transferee).
(Z4) Examples thereof include a step of removing the release sheet of the transfer sheet after taking out the resin molded body (transfered object) from the mold.
When the protective layer is in a semi-cured state, it is preferable to irradiate ultraviolet rays after the completion of the step (z4) to completely cure the protective layer.

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

[Molding mold]
The molding die of the present invention has a first region X'having an uneven portion on the surface and a second region Y'adjacent to the first region, and is measured according to JIS B0601: 1994. that the 'arithmetic mean roughness Ra at a cutoff value 0.8mm of' ₁ the first region X, JIS B0601: the cut-off value 0.8mm of the second region Y ', which is measured according to 1994 arithmetic average roughness Ra 'and _2, Ra'_1> Ra 'satisfy the _second relation, JIS B0601: the first area X as measured in accordance with 1994' ten-point average of a cut-off value 0.8mm of The roughness Rz ′ ₁ and the Ra ′ ₁ satisfy the relationship of 2.0 ≦ Rz ′ ₁ / Ra ′ ₁ ≦ 15.0.

Surface of the mold _{is, Ra '1>Ra' 2} , and, by satisfying the relation of _{2.0 ≦ Rz '1 / Ra'} 1 ≦ 15.0, the release sheet formed by using the mold , Ra ₁ > Ra ₂ , and 2.0 ≤ Rz ₁ / Ra ₁ ≤ 15.0 can be easily satisfied.
Further, by Rz _{'1 /} Ra' ₁ and 15.0 or less, upon the release of the resin layer from the mold, by a sudden change of the release rate, streaky pattern occurs on the surface of the resin layer Can be suppressed.

A preferred range of the "Rz _'1 / Ra' ₁ 'is preferably the same as the preferable range of the" _Rz 1 / Ra ₁ "in the transfer sheet described above.
"Ra _'1 -Ra' ₂ ',' Ra _'1', 'Ra' preferred range of _2" and "Rz _'1" is _"Ra 1 -Ra _2" of the transfer sheet described above, "Ra _1" , "Ra ₂ " and "Rz ₁ " are preferably the same as the preferred range. However, when used as a mold for a release sheet having another layer on the resin layer, "Ra ₁ ", "Ra ₂ " and "Rz ₁ " are "Ra ' ₁ ", "Ra' ₂ " and "Ra ' ₂ ". It is preferable to design in consideration of relaxation rather than Rz ' ₁ ".

"Ra _'1', 'Ra' ₂ 'and' Rz _'1" is a mold surface shaped to produce a shaped sheets, it can be calculated by measuring the surface shape of the sheet.

Hereinafter, the present invention will be specifically described with reference to Examples and Comparative Examples. The present invention is not limited to the embodiments described in the examples.

1. 1. Preparation of molding mold 1-1. Preparation of Mold A A cylinder having a hard copper plating layer having a thickness of 200 μm was prepared. The portion of the cylinder surface corresponding to the first region X'was covered with a punched mask. Next, while rotating the cylinder, the surface of the cylinder was sandblasted under the following conditions to prepare a molding mold A in which the first region X'is arranged in the central portion and the second region Y'is arranged in the peripheral portion. .. ₁ 'area S' of the first region X, the ratio of the ₂ 'area S' of the second region Y [S _'2 / S' _1] was 1.21.
[Sandblasting conditions]
・ Cylinder diameter: 300 mm
・ Number of passes ^* : 4 times ・ Abrasive particles: Spherical glass beads with an average particle diameter of 83 μm ・ Injection nozzle diameter: 400 mm
・ Injection pressure: 0.23 MPa
・ Injection frequency: 90Hz
* "Number of passes" is the number of rotations of the cylinder from the start to the end of sandblasting. That is, the larger the number of passes, the longer the sandblasting time.

1-2. Preparation of Molds B to G Molds B to G were produced in the same manner as the molding molds A, except that the sandblasting conditions and the plating layer of the cylinder were changed to the conditions shown in Table 1.

1-3. Measurement of the shape of the molding mold On a polyethylene terephthalate film having a thickness of 50 μm, a coating liquid for forming a resin layer having the following formulation was applied and dried to form an uncured resin layer.
<Coating liquid for forming a resin layer>
60 parts by mass of ionizing radiation curable resin composition (manufactured by Kyoei Chemical Co., Ltd., ES105M)
・ Methyl ethyl ketone 40 parts by mass ・ Silicone leveling agent 0.5 parts by mass

Next, using the molding molds A to G prepared in the above "1-1" and "1-2", the uncured resin layer was formed, and at the same time, ionizing radiation was irradiated from the polyethylene terephthalate film side. The shaped resin layer was cured to form a resin layer having a thickness of 5.0 μm on the polyethylene terephthalate film.

Surface roughness measuring instrument (model: SE-3400 / Kosaka Laboratory Ltd.) using, by the following measuring conditions, JIS in cut-off value 0.8 mm B0601: 1994 of Ra _'1, Ra' ₂ and It was measured Rz _'1. Ra _'1, Ra' ₂ and Rz _'1, in accordance with the description text, and an average value of measured values of 20 points. The results are shown in Table 1.
[Needle of surface roughness detector]
Product name SE2555N manufactured by Kosaka Research Institute (tip radius of curvature: 2 μm, apex angle: 90 degrees, material: diamond)
[Measurement conditions of surface roughness measuring instrument]
-Reference length (cutoff value of roughness curve λc): 0.8 mm
-Evaluation length (reference length (cutoff value λc) x 5): 4.0 mm
・ Feeding speed of stylus: 0.5 mm / s
-Preliminary length: (cutoff value λc) x 2
・ Vertical magnification: 2000 times ・ Horizontal magnification: 10 times

2. 2. Preparation of Transfer Sheet [Example 1]
A coating liquid for forming a resin layer according to the following formulation was applied onto a polyethylene terephthalate film having a thickness of 50 μm and dried to form an uncured resin layer.
<Coating liquid for forming a resin layer>
60 parts by mass of ionizing radiation curable resin composition (manufactured by Kyoei Chemical Co., Ltd., ES105M)
・ Methyl ethyl ketone 40 parts by mass ・ Silicone leveling agent 0.5 parts by mass

Next, using the molding mold A produced in the above "1-1", the uncured resin layer is shaped, and at the same time, ionizing radiation is irradiated from the polyethylene terephthalate film side to cure the shaped resin layer. , A resin layer having a thickness of 5.0 μm was formed on the polyethylene terephthalate film.
When the molding die A was peeled from the resin layer, the peelability was good, and a streak-like pattern was not formed on the surface of the resin layer. In the examples described later, even when the molding molds B to G were used, a streak-like pattern was not formed on the surface of the resin layer.

Next, a release layer forming coating solution of the following formulation was applied to the entire surface of the resin layer and dried to form a release layer to obtain a release sheet used in Example 1. The release sheet had a configuration in which a first region X was arranged in a central portion and a second region Y was arranged in a peripheral portion. The thickness of the release layer was measured by the method described in the main text of the specification and found to be 0.44 μm.
<Coating liquid for mold release layer formation>
-Acrylic polyol 70 parts by mass (manufactured by Soken Chemical Co., Ltd., product name: Thermolac SU100A)
25 parts by mass of isocyanate (manufactured by Mitsui Chemicals, trade name: Takenate D-110N)
-Ethyl acetate 161 parts by mass-Methyl isobutyl ketone 56 parts by mass

Next, a coating liquid for forming a protective layer according to the following formulation is applied onto the release layer of the release sheet so that the amount of adhesion after drying is 6.5 g / m ² (6.0 μm) to form a coating film. After that, the light source was irradiated with an H bulb, a transport speed of 20 m / min, and an output of 40% using a fusion UV lamp system to semi-cure the protective layer. The integrated light intensity at this time was measured with an illuminance meter (trade name: UVPF-A1) manufactured by Eye Graphics Co., Ltd. and found to be 15 mJ / m ² .
<Coating liquid for forming a protective layer>
-Urethane acrylate-based UV curable resin composition 70 parts by mass (manufactured by Dainichiseika Co., Ltd., trade name: Seika Beam HT-X)
(Solid content 35% by mass, toluene / ethyl acetate mixed solvent)
-Urethane acrylate-based UV curable resin composition 30 parts by mass (manufactured by Dainichiseika Co., Ltd., trade name: Seika Beam EXF-HT-1)
(Solid content 40% by mass, toluene / methyl ethyl ketone mixed solvent)

Next, the coating liquid for forming an anchor layer of the following formulation was applied onto the protective layer so that the adhesion amount after drying was 3.0 g / m ^2, and after forming a coating film, it was dried at 40 ° C. for 72 hours. It was cured to form an anchor layer having a thickness of 2 μm.
<Coating liquid for forming an anchor layer>
・ 100 parts by mass of acrylic polyol (manufactured by Dainichiseika Co., Ltd., trade name: TM-VMAC, solid content 25% by mass)
(Toluene / ethyl acetate / methyl ethyl ketone mixed solvent)
・ Xanmethylene diisocyanate 10 parts by mass (manufactured by Dainichiseika Co., Ltd., trade name: PTC-RC3)
(Solid content 75% by mass, solvent: ethyl acetate)

Next, the coating liquid for forming an adhesive layer of the following formulation was applied onto the anchor layer so that the amount of adhesion after drying was 2.5 g / m ^2, and a coating film was formed. The coating film was dried to form an adhesive layer having a thickness of 2 μm, and a transfer sheet of Example 1 was obtained. The area _{S 1} of the first region X of the transfer sheet, the ratio of the area _{S 2} of the second region Y _[S 2 / S _1] was 1.21.
<Coating liquid for adhesive layer>
-Acrylic resin 100 parts by mass (manufactured by Dainichiseika Co., Ltd., product name: TM-R600, solid content 20%)
(Ethyl acetate / acetic acid-n-propyl / methyl ethyl ketone mixed solvent)
・ Methyl ethyl ketone 40 parts by mass

[Examples 2 to 13]
Transfer sheets of Examples 2 to 13 were obtained in the same manner as in Example 1 except that the thicknesses of the mold and the release layer were changed to the conditions shown in Table 2.

[Comparative Example 1]
After forming a coating film, a coating liquid for forming a mat layer according to the following formulation is applied onto a portion of a polyethylene terephthalate film having a thickness of 50 μm to form a first region X so that the thickness after drying is 2.5 μm. , Aged at room temperature (25 ° C.) for 72 hours to form a pre-cured matte layer.
<Applying liquid for mat layer>
40 parts by mass of acrylic polyol (manufactured by Soken Chemical Co., Ltd., trade name: Thermolac SU100A, solid content 50% by mass)
・ 4 parts by mass of filler (manufactured by Nippon Shokubai Co., Ltd., trade name: Epostal S12, average particle size 1.2 μm)
14 parts by mass of isocyanate (manufactured by Mitsui Chemicals, trade name: Takenate D-110N, solid content: 75%)
(Takenate is a registered trademark)
・ Ethyl acetate 40 parts by mass

Next, the coating liquid for the release layer according to the following formulation was applied onto the mat layer and the rest of the polyethylene terephthalate film so that the thickness after drying was 0.5 μm, and then aged at 40 ° C. for 96 hours to cure. The pre-cured mat layer was completely cured, and a release layer was formed to obtain a release sheet used in Comparative Example 1. The release sheet had a configuration in which a first region X was arranged in a central portion and a second region Y was arranged in a peripheral portion.
Next, a protective layer, an anchor layer and an adhesive layer were formed on the release layer of the release sheet in the same manner as in Example 1 to obtain a transfer sheet of Comparative Example 1. The area _{S 1} of the first region X of the transfer sheet, the ratio of the area _{S 2} of the second region Y _[S 2 / S _1] was 1.21.

3. 3. Evaluation and measurement The following evaluation and measurement were performed on the transfer sheets obtained in Examples and Comparative Examples. The results are shown in Table 2.

3-1. Arithmetic mean roughness Ra, 10-point average roughness Rz
Using a surface roughness measuring instrument (model number: SE-3400 / manufactured by Kosaka Laboratory Co., Ltd.), the first region X and the second of the release sheet used for the transfer sheets of Examples and Comparative Examples under the following measurement conditions. For the region Y, Ra ₁ and Rz ₁ of JIS B0601: 1994 were measured at a cutoff value of 0.8 mm.
[Needle of surface roughness detector]
Product name SE2555N manufactured by Kosaka Research Institute (tip radius of curvature: 2 μm, apex angle: 90 degrees, material: diamond)
[Measurement conditions of surface roughness measuring instrument]
-Reference length (cutoff value of roughness curve λc): 0.8 mm
-Evaluation length (reference length (cutoff value λc) x 5): 4.0 mm
・ Feeding speed of stylus: 0.5 mm / s
-Preliminary length: (cutoff value λc) x 2
・ Vertical magnification: 2000 times ・ Horizontal magnification: 10 times

3-2. Streaky pattern Using the transfer sheets obtained in Examples and Comparative Examples, after performing the steps (z1) to (z4) in the main text of the specification, UV irradiation from the protective layer side (in the air, H bulb, 800 mJ / cm ² ), and the protective layer was completely cured to obtain a decorative molded product. A flat plate having a thickness of 2 mm was used as the mold, polycarbonate was used as the injection resin, and the temperature of the injection resin at the time of injection was 285 ° C.
The surface of the obtained decorative molded product was observed from various angles under the illumination of a fluorescent lamp, and the one in which no streak-like pattern was observed was designated as "A", and the one in which the streak-like pattern was observed was designated as "C". did.

3-3. Glitter The surface of the decorative molded product obtained in Examples and Comparative Examples on the transparent acrylic sheet side was attached to the screen of the liquid crystal display device, and the screen of the liquid crystal display device was observed from the front. The one in which the glare was not noticeable was designated as A, and the one in which the glare was noticeable was designated as C.

From the results in Table 1, it can be confirmed that according to the transfer sheets of Examples 1 to 13, the design and yield of the decorative molded product can be improved without forming a streak-like pattern on the surface of the transfer layer during transfer. .. Further, it can be confirmed that the decorative molded products obtained from the transfer sheets of Examples 1 to 13 can suppress glare.

The transfer sheet of the present invention can be suitably used for manufacturing communication devices such as mobile phones, information devices inside automobiles, and decorative molded products such as home appliances.

11: Support 12: Resin layer 10: Release sheet 20: Transfer layer 21: Protective layer 22: Adhesive layer 40: Transfer layer 100: Transfer sheet

Claims (6)

A transfer sheet having a transfer layer on a release sheet.
The surface of the release sheet on the side in contact with the transfer layer has a first region X and a second region Y adjacent to the first region X.
The arithmetic mean roughness Ra ₁ at a cutoff value of 0.8 mm of the first region X measured according to JIS B0601: 1994 and the cutoff of the second region Y measured according to JIS B0601: 1994. The arithmetic mean roughness Ra ₂ at a value of 0.8 mm satisfies the relationship of Ra ₁ > Ra ₂ .
The ten-point average roughness Rz ₁ at a cutoff value of 0.8 mm in the first region measured according to JIS B0601: 1994 and the Ra ₁ are 2.0 ≤ Rz ₁ / Ra ₁ ≤ 15. A transfer sheet that satisfies the relationship of 0. The transfer sheet according to claim 1, wherein Ra _1- Ra ₂ is 0.05 to 1.00 μm. The transfer sheet according to claim 1 or 2, wherein Rz ₁ is 0.25 to 5.00 μm. The area _{S 1} of the first region X, the the area _{S 2} of the second region Y satisfies the relationship of 0.1 ≦ _S 2 / _{S 1,} according to any one of claims 1 to 3 Transfer sheet. Manufacture of a decorative molded product comprising a step of transferring the transfer layer of the transfer sheet according to any one of claims 1 to 4 to an object to be transferred and a step of peeling off the release sheet of the transfer sheet. Method. It is a molding mold
The mold has a first region X'having an uneven portion on the surface and a second region Y'adjacent to the first region.
JIS B0601: as' arithmetic mean roughness Ra at a cutoff value 0.8mm of _'1 the first region X which is measured according to 1994, JIS B0601: the is measured according to 1994 second region Y' arithmetic average roughness Ra of a cutoff value 0.8mm of 'and _2, Ra' meet _1> Ra _'2 relations,
JIS B0601: and 'ten-point average roughness Rz of a cut-off value 0.8mm of' ₁ the first region X which is measured according to 1994, the Ra _'1 and is, 2.0 ≦ Rz' ₁ / ra 'satisfy the relationship of ₁ ≦ 15.0, type molding.