JP5159981B1 - A transfer sheet capable of suppressing deformation of a concavo-convex forming layer while suppressing cracks generated in a metal vapor deposition layer. - Google Patents

Abstract

An object of the present invention is to provide a transfer sheet in which cracks do not easily occur in a metal vapor deposition layer in the step of injecting resin onto the transfer sheet in a mold.
A transfer sheet 1 according to the present invention is a transfer sheet 1 having a transfer layer 3 on a substrate sheet 2, the transfer layer 3 is formed on the substrate sheet 2, and the shape thereof is the substrate sheet 2. A concavo-convex forming layer 8 having a plurality of convex portions that are convex in the direction in which the transfer layer 3 is formed, and a metal vapor-deposited layer 9 formed directly on the concavo-convex forming layer 8, The concavo-convex forming layer 8 was configured to include an acrylic polyol having a polymerization average molecular weight of 72,000 to 77000, a hydroxyl value of 8 to 15 mgKOH / g, and a glass transition temperature (Tg) of 60 to 100 ° C.
[Selection] Figure 1

Description

  The present invention relates to a transfer sheet, and more particularly to a transfer sheet that is less prone to crack in a metal vapor deposition layer during molding and can suppress deformation of an unevenness forming layer.

  2. Description of the Related Art Conventionally, a method for decorating the surface of an article such as a plastic part or an exterior product using a transfer sheet is known. The transfer sheet has a structure in which a transfer layer is provided on one side of a base sheet as a support, and this transfer layer is transferred from the base sheet to the surface of the article. The transfer layer transferred to the surface of the article is a laminate in which a resin, a pattern, or the like is laminated, and forms a protective coating or a decorative coating on the article surface.

  For example, Patent Document 1 discloses a transfer sheet in which a transparent uneven layer is formed on a metal vapor deposition layer. The transparent concavo-convex layer has a fine concavo-convex surface, and the width of the fine concavo-convex surface is 0.2 to 200 μm and the depth is 0.1 to 10 μm even when the transfer sheet is stretched to a predetermined size. It is configured to fit within.

JP 2007-245725 A

  However, when creating a decorative molded product using the transfer sheet of Patent Document 1, a resin is injected from the metal vapor deposition layer side to create a decorative molded product. At this time, the metal vapor deposition layer is pressed against the transparent concavo-convex layer by the hot pressure of the resin, and is stretched into the shape of the transparent concavo-convex layer. As a result, there is a problem that cracks occur in the metal vapor deposition layer. In order to solve this problem, a method has been proposed in which the transparent concavo-convex layer is softened to prevent the metal vapor deposition layer from cracking. However, in such a case, there is a problem that the transparent uneven layer cannot withstand the heat pressure of the resin and the shape thereof is deformed.

  An object of the present invention is to provide a transfer sheet in which cracks are not easily formed in the metal vapor deposition layer and the shape of the transparent uneven layer is not deformed when a decorative molded product is produced using the transfer sheet.

  In order to achieve the above object, the present invention is configured as follows.

The feature of the first aspect of the present invention is as follows.
In a transfer sheet comprising a transfer layer on a substrate sheet,
The transfer layer is
A concavo-convex forming layer comprising a plurality of convex portions formed on the base sheet, the shape of which is convex with respect to the direction in which the transfer layer of the base sheet is formed;
A metal vapor-deposited layer formed directly on the concave-convex forming layer,
The unevenness forming layer is
Polymerization average molecular weight: 72000-77000,
Hydroxyl value: 8-15 mg KOH / g,
Glass transition temperature (Tg): 60 to 100 ° C.
It is in the point containing the acrylic polyol which is.

  If comprised in this way, the extending | stretching rate of an uneven | corrugated formation layer will be 100-200%, and pencil hardness will be BH. If it does so, a concavo-convex formation layer will be provided with fixed hardness, while providing flexibility. As a result, in the step of injecting the resin onto the transfer sheet, even if the resin heat pressure acts on the metal vapor deposition layer, the unevenness forming layer can retain its shape, but can also absorb the heat pressure applied to the metal vapor deposition layer. . Therefore, the decorative molded product created from the transfer sheet of the present configuration is a decorative molded product with excellent design, in which the occurrence of cracks in the metal vapor-deposited layer is suppressed, and the concavo-convex forming layer also has a desired shape. Become.

The feature of the second aspect of the present invention is as follows:
A protective layer is provided between the base sheet and the unevenness forming layer,
The protective layer is
Polymerization average molecular weight: 70000-75000,
Hydroxyl value: 3-10 mg KOH / g,
Glass transition temperature (Tg): 80 to 120 ° C.
It is in the point containing the epoxy melamine which is.

  If comprised in this way, a protective layer will absorb an ultraviolet-ray. If it does so, the quantity of the ultraviolet-ray which will hit the uneven | corrugated formation layer arrange | positioned under a protective layer will reduce in a decorative molded product. As a result, it can suppress that resin which comprises an uneven | corrugated formation layer discolors yellow by an ultraviolet-ray. Therefore, the decorative molded product created by the transfer sheet can maintain high designability for a long time.

The feature of the third aspect of the present invention is that
An impact absorbing layer is provided between the protective layer and the unevenness forming layer, and the impact absorbing layer is composed of the same resin as that constituting the unevenness forming layer.

  If comprised in this way, when injecting resin from the metal vapor deposition layer side and creating a decorative molded product, the heat | fever pressure of the resin inject | poured will be absorbed by the shock absorption layer. As a result, when creating a decorative molded product, the thermal pressure of the resin applied to the protective layer can be reduced. Therefore, it can suppress that a crack generate | occur | produces in a protective layer.

The feature of the fourth aspect of the present invention is as follows:
The convex part which comprises the said uneven | corrugated formation layer exists in the point provided with the magnitude | size of 200 micrometers-1000 micrometers in the width direction, and 1 micrometer-30 micrometers in a height direction.

  If comprised in this way, recognition of the uneven | corrugated formation layer by visual observation becomes easy, and the design of an uneven | corrugated formation layer can be represented in three dimensions with a combination with a metal vapor deposition layer.

It is sectional drawing of the transfer sheet of this invention. It is sectional drawing of the decorative molded product created from the transfer sheet of this invention. It is a manufacturing sectional view when creating a decorative molded product from the transfer sheet of the present invention. It is a manufacturing sectional view when creating a decorative molded product from the transfer sheet of the present invention.

  Hereinafter, embodiments according to the present invention will be described in more detail with reference to the drawings. It should be noted that the dimensions, materials, shapes, relative positions, etc. of the parts and portions described in the embodiments of the present invention are not intended to limit the scope of the present invention only to those unless otherwise specified. This is just an illustrative example.

[Transfer sheet]
FIG. 1 is a cross-sectional view of the transfer sheet of the present invention, and FIG. 2 is a cross-sectional view of a decorative molded product 100 created using the transfer sheet of the present invention. As shown in FIG. 1, a transfer layer 3 is provided on one side of the base sheet 2. The transfer layer 3 has a configuration in which a hard coat layer 4, a design layer 5, a protective layer 6, a shock absorbing layer 7, a concavo-convex forming layer 8, a metal deposition layer 9, and an adhesive layer 10 are laminated in this order from the substrate sheet 2 side. The hard coat layer 4, the design layer 5, the protective layer 6, and the shock absorbing layer 7 are laminated on the entire surface of the base sheet 2, and the concavo-convex forming layer 8 is convex toward the adhesive layer 10 side. Are partially laminated on the shock absorbing layer 7. The metal vapor deposition layer 9 is formed so as to cover the shock absorbing layer 7 and the unevenness formation layer 8 and is formed on the adhesion layer 10 metal vapor deposition layer 9.

  Of the layers constituting the transfer layer 3, each resin layer can be formed by a method similar to the conventional method unless otherwise specified. Examples of conventional layer forming methods include coating methods such as gravure coating, roll coating, and comma coating, printing methods such as gravure printing, and screen printing.

[Base sheet]
The base sheet 2 is made of a sheet material or a film material conventionally used for supporting the design layer 4 and the like on the sheet. Film material refers to a sheet material made of synthetic resin. As the synthetic resin, polypropylene resin, polyethylene resin, polyamide resin, polyester resin, acrylic resin, polyvinyl chloride resin and the like can be used. In addition, a metal sheet such as aluminum foil or copper foil, a cellulose sheet such as glassine paper, coated paper, cellophane, or a composite of each of the above-mentioned sheets having releasability as a base sheet of a normal transfer sheet It can be used as a base sheet. In addition, the thickness of the base sheet 1 is 10 μm to 150 μm.

[Transfer layer]
The transfer layer 3 is a layer provided on one side of the substrate sheet 2 and transferred from the substrate sheet 2 to the surface of the transfer target. The transfer layer 3 includes a hard coat layer 4, a design layer 5, a protective layer 6, an unevenness forming layer 7, a shock absorbing layer 8, a metal vapor deposition layer 9, and an adhesive layer 10.

<Hard coat layer>
As shown in FIG. 2, the hard coat layer 4 is disposed on the surface of a decorative molded product 100 created using the transfer sheet 1, and has a certain hardness to protect the transfer layer 3. . Examples of the material of the hard coat layer 4 include ionizing radiation curable resins such as cyanoacrylate and urethane acrylate, and thermosetting resins such as acrylic and urethane, but are not particularly limited. The hard coat layer 4 has a thickness of 0.5 μm to 30 μm.

<Design layer>
As shown in FIG. 2, the design layer 5 is a layer that is arranged on the surface of the molding resin 11 in the decorative molded product 100 and decorates the molding resin 11. As a material of the pattern layer 5, a resin such as polyvinyl resin, polyamide resin, polyacrylic resin, polyurethane resin, polyvinyl acetal resin, polyester urethane resin, cellulose ester resin, alkyd resin is used as a binder, and a pigment or dye of an appropriate color is used. A color ink contained as a colorant may be used. In the case of forming a metal color, a pearl pigment in which titanium oxide is coated on metal particles such as aluminum, titanium, bronze, or mica can be used. In addition, it is preferable to use an acrylic resin among the binders constituting the pattern layer 5. When an acrylic resin is used as the binder constituting the design layer 5, the acrylic resin and the resin constituting the protective layer 6 interact to improve the adhesion between the design layer 5 and the protective layer 6. In addition, the thickness of the pattern layer 5 is 0.5 micrometer-15 micrometers.

  As a method for forming the pattern layer 5, an offset printing method and a gravure printing method are particularly suitable for performing multicolor printing and gradation expression.

<Protective layer>
The protective layer 6 is a layer that protects the shock absorbing layer 7, the unevenness forming layer 8, and the metal deposition layer 9 from external factors in the decorative molded product 100 created from the transfer sheet 1. Specifically, the protective layer 9 is a layer that protects the shock absorbing layer 7, the unevenness forming layer 8, and the metal deposition layer 9 from impact, wear, or chemicals. The protective layer 6 is composed of epoxy melamine having a polymerization average molecular weight of 70000-75000, a hydroxyl value of 3-10 mg KOH / g, and a glass transition temperature (Tg) of 80-120 ° C. When the resin constituting the protective layer 6 is configured as described above, the pencil hardness of the protective layer 6 is HB to 2H.

  Then, as shown in FIG. 2, in the decorative molded product 100 created using the transfer sheet 1, the shock absorbing layer 7, the concavo-convex forming layer 8, and the metal vapor-deposited layer 9 are protective layers having a pencil hardness of HB to 2H. 6 is protected. Therefore, the decorative molded product 100 is excellent in wear resistance and impact resistance, and can maintain the high designability of the metal deposition layer 9 for a long time.

  Further, as described above, in the decorative molded product 100 created from the transfer sheet 1 of the present invention, the protective layer 6 is disposed on the surface side of the decorative molded product 100 with respect to the impact absorbing layer 7 and the unevenness forming layer 8. Is done. If it does so, an ultraviolet-ray will be absorbed by the epoxy melamine which comprises the protective layer 6, and the quantity of the ultraviolet-ray which will hit the impact absorption layer 7 arrange | positioned under the protective layer 6, and the uneven | corrugated formation layer 8 can be reduced. Therefore, it can suppress that resin which comprises the shock-absorbing layer 7 and the uneven | corrugated formation layer 8 changes in color yellow with an ultraviolet-ray. As a result, the decorative molded product 100 can maintain high designability for a long time.

  Moreover, the thickness of the protective layer 6 is 0.1 micrometer-2.0 micrometers. When the thickness of the protective layer 6 is in the above range, the protective layer 6 itself does not generate cracks in the injection process, and the impact absorbing layer 7 and the unevenness forming layer 8 can be prevented from being discolored to yellow.

<Shock absorbing layer>
The shock absorbing layer 7 is a layer that protects the protective layer 6 from the heat pressure of the resin in the step of integrating the transfer sheet 1 and the resin when the decorative molded product 100 is created from the transfer sheet 1.

  In addition, it is preferable that the thickness of the shock absorbing layer 7 is 0.1 μm to 5.0 μm. When the thickness of the shock absorbing layer 7 is less than 0.1 μm, ink flow occurs in the shock absorbing layer 7 due to the thermal pressure of the resin in the injection process. On the contrary, when the thickness of the shock absorbing layer 7 exceeds 5.0 μm, cracks and blocking occur in the shock absorbing layer 7 in the injection process.

  The resin constituting the shock absorbing layer 7 is the same as the resin constituting the unevenness forming layer 8. If the resin constituting the shock absorbing layer 7 and the concave / convex forming layer 8 is the same, even if the thermal pressure of the resin acts on the metal vapor-deposited layer 9 as will be described later, the thermal pressure is applied to the shock absorbing layer 7 and the concave / convex layer. It can be absorbed by the formation layer 8. As a result, the thermal pressure applied to the protective layer 6 due to the resin being injected onto the transfer sheet 1 is reduced by the amount of the impact absorbing layer 7 and the unevenness forming layer 8 being formed. Therefore, when the resin is injected onto the transfer sheet 1, it is possible to reduce cracks that occur in the protective layer 6 due to the thermal pressure of the resin.

<Unevenness forming layer>
As shown in FIG. 2, the concavo-convex forming layer 8 is a three-dimensional representation of the metal vapor deposition layer 9 laminated below the concavo-convex forming layer 8 in the decorative molded product 100 created using the transfer sheet 1. This is a layer that improves the design of the decorative molded product 100. As shown in FIG. 1, the unevenness forming layer 8 is composed of a plurality of convex portions, and the size per convex portion is 200 μm to 1000 μm in the width direction and 1 μm to 30 μm in the height direction.

  In addition, when the size of the convex portion is 200 μm to 1000 μm in the width direction and 1 μm to 30 μm in the height direction, it is easy to visually recognize the unevenness forming layer 8, and in combination with the metal vapor deposition layer 9 The design of the unevenness forming layer 8 can be expressed three-dimensionally.

  In addition, the uneven | corrugated formation layer 8 is comprised from the acrylic polyol whose polymerization average molecular weight is 72000-77000, a hydroxyl value is 8-15 mgKOH / g, and a glass transition temperature (Tg) is 60-100 degreeC. When the unevenness forming layer 8 is configured as described above, the stretching ratio of the unevenness forming layer 8 is 100 to 200%, and the pencil hardness is B to H. Then, the unevenness forming layer 8 has a certain hardness while having flexibility. As a result, in the step of injecting the resin onto the transfer sheet 1, even when the resin heat pressure acts on the metal vapor deposition layer 9, the unevenness forming layer 8 can absorb the heat pressure applied to the metal vapor deposition layer 9. The shape can also be maintained. Therefore, the decorative molded product created from the transfer sheet 1 is a decorative molded product excellent in design with the occurrence of cracks in the metal vapor-deposited layer 9 and also having the desired shape. .

<Metal vapor deposition layer>
The metal deposition layer 9 is a layer that gives the transfer layer 3 a metallic luster appearance. The metal vapor-deposited layer 9 may be formed on the entire sheet surface of the transfer layer 3 or a part thereof. When the metal vapor deposition layer 9 is formed on a part of the sheet surface, a known patterning method can be used.

  The metal vapor deposition layer 9 is formed by vapor-depositing metal on the surfaces of the shock absorbing layer 7 and the unevenness forming layer 8. The metal can be deposited by evaporating the metal and attaching a metal vapor to the surface of the shock absorbing layer. What is necessary is just to select the kind of metal suitably according to the metallic luster color to express.

  In addition, the metal used for the metal vapor deposition layer 9 has preferable aluminum, tin, chromium, or indium. Since these metal vapor deposition layers are excellent in flexibility and have good followability to the three-dimensional shape, cracks are hardly generated in the metal vapor deposition layer 9.

  The thickness of the metal vapor deposition layer 9 is 30-200 nm, Preferably it is 40-190 nm, More preferably, it is 50-180 nm. If the thickness of the metal vapor deposition layer 9 is less than 30 nm, the gloss of the metal color is insufficient, and if it exceeds 200 nm, vapor deposition defects are likely to occur in the metal vapor deposition layer 9.

<Adhesive layer>
The adhesive layer 10 is a layer for adhering the molding resin and the transfer sheet 1, and is formed on the surface of the transfer sheet 1 opposite to the base sheet 2. For the adhesive layer 10, a heat-sensitive or pressure-sensitive resin suitable for the type of molding resin is used. If the molding resin is a PMMA resin, for example, the adhesive layer may be a PMMA resin. If the molding resin is PC or polystyrene (PS) resin, for example, the adhesive layer may be made of PMMA, PS, or PA resin that has an affinity for these resins. The adhesive layer 10 has a thickness of 0.1 μm to 20 μm.

[Transfer method to article]
Below, the method to produce the decorative molded product 100 using the transfer sheet 1 of this invention is demonstrated. 3 and 4 are production cross-sectional views when the decorative molded product 100 is created using the transfer sheet 1 of the present invention. In addition, as a method of creating the decorative molded product 100 using the transfer sheet 1 of the present invention, hot roll transfer, in-mold molding, and the like can be given. For example, in thermal roll transfer, as shown in FIG. 3, the transfer layer 3 side (opposite side of the base sheet 2) of the transfer sheet 1 is overlaid on the surface of the transfer target 20, and a roll transfer machine 21, up-down Heat and pressure are applied from the substrate sheet 2 side of the transfer sheet 1 using a transfer machine such as a transfer machine. By doing so, the transfer sheet 1 adheres to the surface of the transfer target 20. Next, when the base sheet 2 is peeled after cooling, the transfer layer 3 is transferred to the surface of the transfer target 20, and the surface of the article is coated (decorated).

  The material of the transfer target 20 is not particularly limited as long as it has been conventionally transferred by a transfer sheet, or can be used to adhere the transfer layer to the surface by devising the components of the adhesive layer. Various synthetic resins, metal, glass, wood, paper members, these paints and decorations are used as transferred objects

  In the in-mold molding, as shown in FIG. 4, first, the transfer sheet 1 is fed into the molding die in such a direction that the base sheet 2 is in contact with the inner surface of the die (fixed die 22). Next, the mold (fixed mold 22, movable mold 23) is closed, and the molten resin 24 is in contact with the surface of the transfer sheet 1 on the transfer layer 3 side (opposite side of the base sheet 2), that is, the transfer sheet 1 is melted. The molten resin 24 is filled in the mold so as to be sandwiched between the resin 24 and the inner surface of the mold (movable mold 23). As a result, the molten resin 24 is molded, and at the same time, the transfer sheet 1 is bonded to the surface of the resin molded product. The resin molded product is cooled, the mold is opened, and the resin molded product is taken out. When the base sheet 2 is finally peeled off, the transfer layer 3 is transferred onto the surface of the resin molded product, and the surface of the resin molded product is coated (decorated).

  The present invention will be specifically described by the following examples, but the present invention is not limited thereto.

[Example of Embodiment 1]
[Example 1]
A polyester resin film having a thickness of 38 μm was used as the base sheet, and an epoxy melamine release agent was applied on the base sheet to a thickness of 1 μm by a gravure printing method to form a release layer. Thereafter, polyurethane was applied on the release layer by a gravure printing method to form a pattern layer. Next, an epoxy melamine having a polymerization average molecular weight of 72000-74000, a hydroxyl value of 5 KOH / g, and a glass transition temperature of 80 to 90 ° C. was applied on the design layer by a gravure printing method to form a protective layer. In addition, the thickness of the protective layer was 1.2 μm. Next, an acrylic polyol having a polymerization average molecular weight of 72000 to 74000, a hydroxyl value of 10 KOH / g, and a glass transition temperature of 70 to 90 ° C. was applied on the protective layer by a gravure printing method to form an impact absorbing layer. . The thickness of the shock absorbing layer was 1.3 μm. Furthermore, on the shock absorbing layer, the same resin as that used for forming the shock absorbing layer was applied by a gravure printing method to form a concavo-convex forming layer. The thickness of the concavo-convex forming layer was 1.0 μm. Next, the sheet was fed into a metal vapor deposition machine (trade name: EWA-110, company name: ULVAC), and a tin film was vapor-deposited on the shock absorbing layer to form a metal vapor deposition layer. In addition, the thickness of the metal vapor deposition layer was 0.08 micrometer. Finally, an adhesive layer was formed on the metal vapor-deposited layer by applying vinyl acetate with a gravure printing method to obtain a transfer sheet.

  In addition, a decorative molded product was obtained by applying the molding simultaneous transfer method to the obtained transfer sheet. Accordingly, (1) blocking resistance was evaluated for the transfer sheet, and (2) adhesion, (3) crack, (4) ink flow, and (5) shape deformability were evaluated for the decorative molded product. Evaluation methods are shown below, and the evaluation results are shown in Table 1.

〔Evaluation method〕
(1) Blocking resistance It measured about the blocking resistance of the transfer layer in a transfer sheet. The measuring method of blocking resistance was performed based on the blocking resistance described in 6.2.2 of JIS K5701-1. In addition, the blocking resistance evaluation of the said layer evaluated in either of the following.
○: When the transfer sheets are peeled off one by one from a plurality of superimposed transfer sheets, each transfer sheet is peeled off between the base sheet and the hard coat layer, and peeling between the transfer layers cannot be confirmed. It was.
×: When the transfer sheets are peeled off one by one from a plurality of the superimposed transfer sheets, each transfer sheet or a part of the transfer sheet is not peeled between the base sheet and the adhesive layer, and is peeled between the transfer layers. It was confirmed.

(2) Adhesiveness It measured about the adhesiveness in the design layer, uneven | corrugated formation layer, metal vapor deposition layer, impact absorption layer, and uneven | corrugated formation layer in a decorative molded product. The measuring method of adhesiveness was performed based on the cross-cut method described in JIS K5600-5-6. The adhesion between the transfer layers was evaluated by either of the following.
○: The edges of the cuts are completely smooth, and there is no peeling in any lattice eye.
(Triangle | delta): The small peeling could be confirmed to the coating film in the intersection of cut, and the peeling had generate | occur | produced between the transfer layers. Peeling was less than 5% of the cross-cut portion.
X: Small peeling was confirmed in the coating film at the intersection of the cuts, and the peeling occurred between the transfer layers. Peeling was 5% or more of the cross-cut portion.

(3) Crack The surface of the decorative molded product was observed using a microscope (trade name: Digital Microscope, model number: VHX-900) manufactured by Keyence Corporation. And the crack which generate | occur | produced in the metal vapor deposition layer and the protective layer was measured.
○: No cracks could be confirmed in the decorative molded product (per 9 cm ² ).
△: During decorative molded article ⁽² per 9cm), the metallized layer and the protective layer were each confirmed 1-2 cracks 1 to 4 [mu] m ^2.
X: In the decorative molded product (per 9 cm ² ), 3 or more cracks of 1 to 4 μm ² were confirmed for the metal vapor deposition layer and the protective layer.

(4) Ink Flow The surface of the decorative molded product was observed using a microscope (trade name: Digital Microscope, model number: VHX-900) manufactured by Keyence Corporation. Then, the ink flow generated in the shock absorbing layer was measured. The ink flow of the impact absorbing layer was evaluated by either of the following.
○: Ink flow could not be confirmed in the shock absorbing layer.
Δ: One hole having a diameter of 1 mm ^{2 to} 9 mm ² or less was confirmed in the shock absorbing layer.
X: One hole exceeding a diameter of 9 mm ² was confirmed in the shock absorbing layer.

(5) Shape Deformability The surface of the decorative molded product was observed using a microscope (trade name: Digital Microscope, model number: VHX-900) manufactured by Keyence Corporation, and the size of the unevenness forming layer was measured. About the amount of change in the concavo-convex forming layer, the size of the concavo-convex forming layer of the transfer sheet used for the preparation of the decorative molded product measured in advance was compared with the size of the concavo-convex forming layer measured above, and deformed It calculated | required by calculating ratio R (R = surface area of the uneven | corrugated formation layer provided to the transfer sheet / surface area of the uneven | corrugated formation layer provided to the decorative molded product). The shape deformability was evaluated by either of the following.
○: R = 0.8 or more, 1 or less Δ: R = 0.5 or more, less than 0.8 ×: R = less than 0.5

[Examples 2 to 6 and Comparative Examples 1 to 6]
A transfer sheet was produced in the same manner as in Example 1 except that the type of resin constituting the shock absorbing layer was changed as shown in Tables 1 and 2. And the transfer sheet decoration molded product was created and various evaluation was carried out. The evaluation results are shown in Table 1.

1: Transfer sheet 2: Base sheet 3: Transfer layer 4: Hard coat layer 5: Design layer 6: Protective layer 7: Impact absorbing layer 8: Concavity and convexity forming layer 9: Metal vapor deposition layer 10: Adhesive layer 11: Molding resin 20: Transfer object 21: Roll transfer machine 22: Fixed mold 23: Movable mold 24: Molten resin
100: Decorative molded product

Claims (4)

In a transfer sheet comprising a transfer layer on a substrate sheet,
The transfer layer is
A concavo-convex forming layer comprising a plurality of convex portions formed on the base sheet, the shape of which is convex with respect to the direction in which the transfer layer of the base sheet is formed;
A metal vapor-deposited layer formed directly on the concave-convex forming layer,
The unevenness forming layer is
Polymerization average molecular weight: 72000-77000,
Hydroxyl value: 8-15 mg KOH / g,
Glass transition temperature (Tg): 60 to 100 ° C.
The transfer sheet containing the acrylic polyol which is. A protective layer is provided between the base sheet and the unevenness forming layer,
The protective layer is
Polymerization average molecular weight: 70000-75000,
Hydroxyl value: 3-10 mg KOH / g,
Glass transition temperature (Tg): 80 to 120 ° C.
The transfer sheet according to claim 1, comprising an epoxymelamine which is   The transfer sheet according to claim 2, further comprising an impact absorbing layer between the protective layer and the unevenness forming layer, wherein the impact absorbing layer is made of the same resin as that constituting the unevenness forming layer.   The transfer sheet according to claim 1, wherein the protrusions constituting the unevenness forming layer are 200 μm to 1000 μm in the width direction and 1 μm to 30 μm in the height direction.

Images