Cosmetic sheet

Abstract

To provide a decorative sheet equipped with an antenna that can relay radio waves without power supply while preventing damage and dirt on the antenna without spoiling the appearance.SOLUTION: A decorative sheet 100 includes a film layer 110 made of a flexible resin, an antenna material 120 made of a metal wire provided on one side of the film layer 110, and an adhesive layer 130 provided so as to cover one side of the film layer 110 and the antenna material 120. The film layer 110 includes a concealing layer (first base material layer 111, pattern layer 113, primer layer 115) having an antenna material 120 provided on one side and having flexibility and light shielding property, and a coating layer (second substrate layer 112, protective layer 114) provided on the other side of the concealing layer and having flexibility and light transmission.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a cosmetic sheet.

Background Art

[0002] In wireless communication, the attenuation of radio waves by obstacles is a problem that causes line instability, a decrease in data transfer speed, etc., and this tendency is particularly significant in an enclosed indoor space. With the practical implementation of 5G communication, which has a strong attenuation tendency due to obstacles, it is urgent to improve the above problems. As a countermeasure to the above problems, radio wave relay and amplification using a powered repeater are common.

[0003] However, a powered repeater is not easy to be said to be inexpensive. In addition, arranging repeaters in various places in a detached house or a large commercial facility is not only costly but also requires a lot of wiring, resulting in a large amount of heat generation due to leakage or power supply, etc., and it is not easy to manage. Also, in places or environments where it is difficult to supply power, the repeater cannot be used in the first place.

[0004] Therefore, for example, it has been considered to apply a non-powered antenna that can relay radio waves without supplying power by connecting between two linear whip antennas with a coaxial cable or the like (see, for example, Patent Document 1 below).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Patent Document 6

Patent Document 7

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the conventional passive antenna as described above, since the whip antenna is installed on the outer surface such as a wall so as to easily transmit and receive radio waves, there has been a problem that not only is it easy to cause damage due to external stress and dirt due to contaminants, but also the aesthetic appearance is impaired. Therefore, there has been a strong demand to be able to relay radio waves wirelessly without impairing the aesthetic appearance while preventing damage and dirt of the antenna.

Means for Solving the Problems

[0007] The present invention made to solve the above-described problems is a decorative sheet characterized by comprising a film layer made of a flexible resin and an antenna material made of a metal wire provided on one surface side of the film layer.

Effects of the Invention

[0008] According to the decorative sheet of the present invention, the film layer can protect the antenna material from damage due to external stress and dirt due to contaminants, and can prevent a decrease in aesthetic appearance due to the exposure of the antenna material. Therefore, it is possible to relay radio waves wirelessly without impairing the aesthetic appearance while preventing damage and dirt of the antenna material.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0010] Embodiments of the cosmetic sheet according to the present invention will be described based on the drawings, but the present invention is not limited to only the following embodiments described based on the drawings.

[0011] 〈Main Embodiments〉 Main embodiments of the cosmetic sheet according to the present invention will be described based on FIGS. 1 to 3.

[0012] As shown in FIGS. 1 and 2, the cosmetic sheet 100 according to the present embodiment includes a film layer 110 made of a flexible resin, an antenna material 120 made of a metal wire provided on one surface side of the film layer 110 (the back side in FIG. 1, the lower surface side in FIG. 2), and an adhesive layer 130 provided so as to cover one surface side of the film layer 110 (the lower surface side in FIG. 2) and the antenna material 120.

[0013] As shown in FIG. 2, the film layer 110 includes a first base material layer 111 disposed so that the antenna material 120 is located on one surface side (the lower surface side in FIG. 2), a second base material layer 112 disposed so that one surface side is located on the other surface side of the first base material layer 111 (the upper surface side in FIG. 2), a pattern layer 113 provided between the other surface side of the first base material layer 111, that is, between the first base material layer 111 and the second base material layer 112, a protective layer 114 disposed so that one surface side (the lower surface side in FIG. 2) is located on the other surface side of the second base material layer 112 (the upper surface side in FIG. 2), and a primer layer 115 provided on one surface side (the lower surface side in FIG. 2) of the first base material layer 111.

[0014] The first base material layer 111 is a sheet-shaped flexible resin member that forms the base of the film layer 110 together with the second base material layer 112. As the material of the first base material layer 111, a resin excellent in flexibility as well as heat resistance, fire resistance, mechanical strength, etc. is preferable. For example, polypropylene resin, acrylonitrile-butadiene-styrene copolymer, polycarbonate, etc. can be mentioned.

[0015] Further, the first base material layer 111 preferably has a thickness of 50 μm or more and 300 μm or less in total with the second base material layer 112. Because if it is less than 50 μm, wrinkles are likely to occur when providing the antenna material 120, which is not preferable. On the other hand, if it exceeds 300 μm, the rigidity becomes too large, and it is likely to cause difficulties in processing and workability for imparting design properties, which is not preferable.

[0016] The second base material layer 112 is a sheet-shaped flexible resin member that forms the base of the film layer 110 together with the first base material layer 111. As the material of the second base material layer 112, similar to the first base material layer 111, not only excellent in flexibility as well as heat resistance, fire resistance, mechanical strength, etc., but also a resin having light transmittance such as colorless and transparent so that the pattern layer 113 can be visually recognized is preferable. For example, polypropylene resin, acrylonitrile-butadiene-styrene copolymer, polycarbonate, etc. can be mentioned. Further, as described above, the second base material layer 112 preferably has a thickness of 50 μm or more and 300 μm or less in total with the first base material layer 111.

[0017] The pattern layer 113 is a layer for decorating the decorative sheet 100 with a pattern or the like. The pattern layer 113 has light-shielding properties and can be obtained by printing printing ink on the surface of the first base material layer 111 to form a coating film of a pattern. The printing ink is not particularly limited as long as it satisfies the performance generally required for wallpaper (light resistance, color development, safety of use components (for example, does not contain heavy metals or sulfur compounds in pigments and additives), etc.). The pattern layer 113 preferably has a thickness of 0.1 μm or more and 10 μm or less so that sufficient design properties can be expressed.

[0018] The protective layer 114 is a resin layer for protecting the decorative sheet 100. The protective layer 114 has flexibility, light transmittance such as colorless and transparent to enable visual recognition of the pattern layer 113, and further has physical properties (e.g., strength, stain resistance, weather resistance, etc.) necessary for protection.

[0019] The protective layer 114 can be formed as a coating film, for example, by applying a coating agent containing a solvent such as methyl ethyl ketone, a polyurethane resin or an acrylic resin, and a curing agent such as an isocyanate-based agent to the other surface side (the upper surface side in FIG. 1) of the second base material layer 112, drying it, and then irradiating it with ultraviolet rays to cure it. From the viewpoint of surface strength and the like, the basis weight of the protective layer 114 is 2 7.0 g / m² or more 2 and preferably 2.0 g / m² or less.

[0020] The primer layer 115 is a resin layer for improving the adhesiveness between the first base material layer 111 and the adhesive layer 130 and the adhesiveness with other post-applied adhesives. The primer layer 115 can be formed as a flexible easy-adhesive layer, for example, by applying a coating liquid obtained by dissolving a resin such as an acrylic resin, a urethane resin, a vinyl chloride-vinyl acetate copolymer resin, a polyester resin, a polyurethane resin, chlorinated polyethylene, or chlorinated polypropylene in a solvent to one surface side (the lower surface side in FIG. 2) of the first base material layer 111 and drying it. Among them, the resin is particularly preferably a polyurethane resin.

[0021] Also, an embossed pattern 110a for making the three-dimensionality by touch more recognizable is formed (applied) by embossing (concavo-convex shaping using an embossing die) on the surface side (the upper surface side in FIG. 2) of the film layer 110.

[0022] This embossed pattern 110a can be formed into an uneven shape by passing the film layer 110, for example, between an embossing roll having recesses with a depth of 15 μm or more and a rubber backup roll having a hardness of 50 or more and less than 90 degrees according to the measurement method defined in Japanese Industrial Standard (JIS K-6253). Examples of the embossed pattern 110a include wood grain board conduit grooves, uneven stone slab surfaces, fabric surface textures, satin finishes, sandblasted finishes, hairline finishes, and multi-line grooves.

[0023] The antenna material 120 is a member having a function of relaying radio waves and is provided on one surface side (the lower surface side in FIG. 2) of the film layer 110 so as to be embedded in the primer layer 115 or the first base material layer 111. The antenna material 120 includes two transmitting and receiving portions 121 for transmitting and receiving radio waves and a conducting portion 122 for communicating between these transmitting and receiving portions 121 (see FIG. 1). The antenna material 120 is not connected to a power source and can transmit radio waves received by one transmitting and receiving portion 121 from the other transmitting and receiving portion 121 due to the electromagnetic wave resonance effect.

[0024] Examples of the material of the antenna material 120 include copper, nickel, nickel-copper alloy, nickel-chromium alloy, Kanthal-iron-chromium alloy, etc., and a copper wire is particularly preferable. The antenna material 120 preferably has a diameter of 30 μm or more and 500 μm or less. When the diameter is 30 μm or more, it can exhibit sufficient strength to withstand bending during the construction and processing of the decorative sheet 100. On the other hand, when the diameter is 500 μm or less, it can suppress the decrease in workability and processability due to increased rigidity.

[0025] It is necessary to set the length of the transmitting and receiving portion 121 according to the radio waves received by the antenna material 120. For example, when receiving 2.4 GHz, which is the wavelength of general Wi-Fi radio waves, the transmitting and receiving portion 121 is set to a length of 31 mm.

[0026] The adhesive layer 130 is a layer for imparting adhesiveness to the film layer 110. The adhesive layer 130 can be formed, for example, by applying an acrylic pressure-sensitive adhesive or the like using a starting material such as acrylic acid or an acrylic ester to one surface (the lower surface in FIG. 2) of the film layer 110 by a roll coating method, a knife coating method, or the like. As the acrylic pressure-sensitive adhesive, for example, the adhesives described in Patent Documents 2 to 7 can be applied.

[0027] The adhesive layer 130 preferably has a thickness in the range of 10 μm or more and 100 μm or less after drying following coating. If the thickness is less than 10 μm, it is difficult to exhibit sufficient adhesive force, which is not preferable. If it exceeds 100 μm, it is likely to cause difficulties in workability, which is not preferable.

[0028] In this embodiment, the first base material layer 111, the pattern layer 113, and the primer layer 115 constitute a hidden layer having flexibility and light-shielding properties, and the second base material layer 112 and the protective layer 114 constitute a coating layer having flexibility and light-transmitting properties. The film layer 110 is constituted by the hidden layer and the coating layer.

[0029] In such a decorative sheet 100 according to this embodiment, by attaching the adhesive layer 130 to the outer surface of a wall or the like, the antenna material 120 can be covered with the film layer 110 and installed on the outer surface of the wall or the like.

[0030] Therefore, in the decorative sheet 100 according to this embodiment, the protective layer 114 and the second base material layer 112, that is, the coating layer, can protect the antenna material 120 from damage due to external stress and dirt due to contaminants, and the pattern layer 113, the first base material layer 111, and the primer layer 115, that is, the hidden layer, can prevent a decrease in aesthetics due to the exposure of the antenna material 120.

[0031] Therefore, according to the decorative sheet 100 according to this embodiment, it is possible to relay radio waves without power supply while preventing damage, dirt, etc. to the antenna material 120 and without impairing the aesthetics.

[0032] Also, as shown in FIG. 3, by attaching the decorative sheet 100 so as to straddle between the outer surfaces on one side and the other side of the wall 10, it is possible to relay radio waves while significantly suppressing the attenuation of the radio wave intensity between one side and the other side of the wall 10. Thus, there is no need to make a through hole in the wall 10 and pass a coaxial cable or the like as in the prior art, and the construction can be carried out easily on site.

[0033] <Other Embodiments> In the above-described embodiment, the case of the decorative sheet 100 in which the embossed pattern 110a is formed on the film layer 110 has been described, but the present invention is not limited thereto. As another embodiment, for example, as shown in FIG. 4, by using the decorative sheet 200 in which the embossed pattern is omitted, it is also possible to improve the manufacturing efficiency.

[0034] In the above-described embodiment, the cases of the decorative sheets 100 and 200 to which the antenna material 120 having a linear transmission / reception unit 121 is applied have been described, but the present invention is not limited thereto, and any antenna material having a transmission / reception unit with a shape that does not impair the transmission / reception ability can be applied. For example, as shown in FIG. 5, it is also possible to apply the antenna material 220 having a multi-line transmission / reception unit 221 formed to meander in a zigzag shape. In the above-described embodiment, the cases of the decorative sheets 100 and 200 to which the antenna material 120 made of a metal wire is applied have been described, but the present invention is not limited thereto, and the antenna material 120 may be an antenna formed by a printing method, so-called a printed antenna. For example, it is also possible to form the antenna material 120 by a method used when manufacturing a printed wiring board. That is, the "antenna material made of a metal wire" in the present invention is not limited to a material containing only metal, but includes a concept including a printed antenna coated and formed using a coating liquid containing a conductive material.

[0035] In addition, in the above-described embodiments, the case of the decorative sheets 100 and 200 provided with the adhesive layer 130 has been described. However, the present invention is not limited thereto, and depending on the usage conditions and the like, it is also possible to use a decorative sheet in which the adhesive layer 130 is omitted.

[0036] Further, in the above-described embodiments, the case of the decorative sheets 100 and 200 in which the covering layer is constituted by the second base material layer 112 and the protective layer 114 has been described. However, the present invention is not limited thereto, and depending on the usage conditions and the like, it is also possible to use a decorative sheet in which the covering layer is constituted by only one of the second base material layer 112 and the protective layer 114. Here, when the covering layer is constituted by only the protective layer 114, that is, when the second base material layer 112 is omitted, the first base material layer 111 preferably has a thickness of 50 μm or more and 300 μm or less.

[0037] Also, in the above-described embodiments, the case of the decorative sheets 100 and 200 in which the concealing layer is constituted by the first base material layer 111, the pattern layer 113, and the primer layer 115 has been described. However, the present invention is not limited thereto, and depending on the usage conditions and the like, it is also possible to form the concealing layer by omitting one or both of the pattern layer 113 and the primer layer 115, that is, to use a decorative sheet having a concealing layer including at least the first base material layer 111.

[0038] However, as in the case of the above-described embodiments, a concealing layer having the pattern layer 113 can further improve the aesthetic appearance, and a concealing layer having the primer layer 115 can further improve the adhesiveness, which is very preferable.

[0039] In the case of a concealing layer in which the pattern layer 113 is omitted, the first base material layer 111 has a light-shielding property such that the hiding ratio based on Japanese Industrial Standard (JIS) "K 5600-4-1" is 0.8 or more, so that the antenna materials 120 and 220 can be made invisible in place of the pattern layer 113. In the above-described embodiment, the case where the radio wave received by the antenna material 120 is a Wi-Fi radio wave has been described. However, the present invention is not limited to this, and the radio wave received by the antenna material 120 may be, for example, a radio wave of the LPWA (Low Power Wide Area) standard. More specifically, it is also possible to receive and use unlicensed LPWA radio waves such as Sigfox, LoRaWAN, Wi-Fi HaLow, Wi-SUN, ELTRES, and ZETA with the antenna material 120. In the above-described embodiment, the case where the antenna material 120 is used as an antenna that receives Wi-Fi radio waves, which are radio waves in the frequency band of 2.4 GHz, has been described. However, the present invention is not limited to this, and the antenna material 120 can also be used, for example, as a coil-type antenna for receiving radio waves in the frequency band of 13.56 MHz used in SuiCa (registered trademark) and the like.

Example

[0040] Examples conducted to confirm the effects of the cosmetic sheet according to the present invention will be described below, but the present invention is not limited only to the examples described below.

[0041] 〈Preparation of test specimens〉 《Test Specimen 1》 First, a colored polypropylene film (manufactured by Rekentecnos Co., Ltd. "OW (product number)") with a thickness of 50 μm and a hiding power of 0.9 based on Japanese Industrial Standard (JIS) "K 5600-4-1" was prepared as the first base material layer 111. Then, a pattern layer 113 was formed by printing and coating an acrylic resin-based oil-based ink (manufactured by Toyo Ink Manufacturing Co., Ltd. "V351UR-T (product number)") on the entire surface of the first base material layer 111 by the gravure printing method.

[0042] Next, an uncolored polypropylene film with a thickness of 80 μm (manufactured by Prime Polymer Co., Ltd. "CPS-DB (product number)") was laminated on the pattern layer 113 as the second base material layer 112. And an acrylic resin-based coating agent (manufactured by Dainichi Seika Kogyo Co., Ltd. "W-480E (product number)") was applied to the surface of the second base material layer 112 with a dry weight of 6.0 g / m2 The protective layer 114 was formed by printing and coating using the gravure printing method so as to achieve this.

[0043] Subsequently, a urethane primer ("V324URLS (product number)" manufactured by Toyo Ink Co., Ltd.) was printed and coated on the back surface of the first base material layer 111 by the gravure printing method to a dry weight of 6.0 g / m 2 and dried by printing and coating using the gravure printing method so as to achieve this to form the primer layer 115. Thus, the film layer 110 was produced.

[0044] Then, an antenna material 120 was provided by embedding a copper wire with a diameter of 100 μm into the primer layer 115 by ultrasonic vibration so as to have the shape shown in Fig. 2. Incidentally, the length of the transmission / reception part 121 was set to 31 mm, and the length of the conduction part 122 was set to 200 mm.

[0045] Next, an acrylic pressure-sensitive adhesive ("BPS6113 (product number)" manufactured by Toyo Ink Co., Ltd.) was applied to the primer layer 115 with a coating machine so that the thickness of the thickest part after drying was 20 μm and dried to form an adhesive layer 130 that covers the antenna material 120. Thus, the test piece 1 of the decorative sheet was obtained (see Table 1 below).

[0046] 《Test Piece 2》 A test piece 2 of the decorative sheet was obtained by manufacturing in the same manner as test piece 1 except that the second base material layer 112 was omitted (see Table 1 below).

[0047] 《Test Piece 3》 A test piece 3 of the decorative sheet was obtained by manufacturing in the same manner as test piece 1 except that the protective layer 114 was omitted (see Table 1 below).

[0048] 《Test Piece 4》 A test piece 4 of the decorative sheet was obtained by manufacturing in the same manner as test piece 1 except that the second base material layer 112 and the protective layer 114 were omitted (see Table 1 below).

[0049] 《Test Piece 5》 A test specimen 5 of the decorative sheet was obtained by producing it in the same manner as the test specimen 1, except that the pattern layer 113 was omitted (see Table 1 below).

[0050] 《Test Specimen 6》 A test specimen 6 of the decorative sheet was obtained by producing it in the same manner as the test specimen 1, except that the pattern layer 113 was omitted and a colored polypropylene film (「OW (product number)」manufactured by Riken Technos Co., Ltd.) with a hiding power of 0.7 based on Japanese Industrial Standard (JIS) 「K 5600-4-1」and a thickness of 50 μm was applied to the first base material layer 111 (see Table 1 below).

[0051] 《Test Specimen 7》 A test specimen 7 of the decorative sheet was obtained by producing it in the same manner as the test specimen 1, except that the second base material layer 112 was omitted and a colored polypropylene film (「OW (product number)」manufactured by Riken Technos Co., Ltd.) with a thickness of 40 μm was applied to the first base material layer 111 (see Table 1 below).

[0052] 《Test Specimen 8》 A test specimen 8 of the decorative sheet was obtained by producing it in the same manner as the test specimen 1, except that the second base material layer 112 was omitted and the protective layer 114 was formed so as to have a dry weight of 1 g / m 2 (see Table 1 below).

[0053] 《Test Specimen 9》 A test specimen 9 of the decorative sheet was obtained by producing it in the same manner as the test specimen 1, except that the antenna material 120 was omitted (see Table 1 below).

[0054]

Table 1

[0055] 〈Test Content〉 For test specimens 1 to 9, the radio wave relay strength, scratch resistance, stain resistance, hiding property, and presence or absence of wrinkles were confirmed respectively, and a comprehensive evaluation was conducted.

[0056] 《Radio Wave Relay Strength》 Completely surround a Wi-Fi router (「WRC-733GHBK-I (product number)」manufactured by ELECOM Co., Ltd.) with an aluminum foil having a thickness of 11 μm, and arrange test specimens 1 to 9 so as to connect across the inner surface side and the outer surface side of this aluminum foil. Then, install a radio wave detector (「ARK-IBQ102 (product number)」) at a distance of 10 cm from the Wi-Fi router, and measure the radio wave intensity. The results are shown in Table 2 below. Note that the measurement target was 2.4 GHz (11ac; 433 Mbps). Also, the radio wave intensity when not coated with aluminum foil was 36.0 dBm.

[0057] 《Scratch Resistance》 For test specimens 1 to 9, a pencil hardness test (pencil strength: 4B) was conducted according to the scratch hardness (pencil method) specified in Japanese Industrial Standard (JIS) 「K 5600」, and the presence or absence of damage to the antenna material 120 and surface scratches was visually confirmed respectively. The results are shown in Table 2 below. Note that in Table 2 below, 「〇」 indicates no damage or scratches, 「△」 indicates almost no damage or scratches, and 「×」 indicates damage or scratches.

[0058] 《Stain Resistance》 For test specimens 1 to 9, four types of contaminants, coffee, soy sauce, black tea, and crayon, were each attached and left standing for 6 hours, and then wiped off with a non-woven fabric containing water to visually confirm the presence or absence of residual contaminants. The results are shown in Table 2 below. Note that in Table 2 below, 「〇」 indicates no residue, 「△」 indicates almost no residue, and 「×」 indicates residue.

[0059] 《Concealability》 When visually observing test specimens 1 to 9, it was confirmed whether the antenna material 120 could be visually recognized. The results are shown in Table 2 below. Note that in Table 2 below, 「〇」 indicates not visible, 「△」 indicates almost not visible, and 「×」 indicates visible.

[0060] 《Presence or Absence of Wrinkles》 When producing Test Specimens 1 to 9, it was visually confirmed whether wrinkles occurred when the antenna material 120 was embedded in the primer layer 115. The results are shown in Table 2 below. In Table 2 below, "〇" indicates no occurrence of wrinkles, and "×" indicates occurrence of wrinkles.

[0061] 《Comprehensive Evaluation》 Based on the above-mentioned test results, comprehensive evaluations were conducted for Test Specimens 1 to 9 respectively. The results are shown in Table 2 below. In Table 2 below, "〇" indicates excellent practicality, "△" indicates practical usability, and "×" indicates unpracticality.

[0062]

Table 2

[0063] 〈Test Results〉 《Radio Wave Relay Strength》 As can be seen from the description in Table 1 above, Test Specimen 9 without the antenna material could not relay the radio waves of the Wi-Fi router shielded with aluminum foil at all. In contrast, for Test Specimens 1 to 8 provided with the antenna material, it was confirmed that they could relay the radio waves even when the Wi-Fi router serving as the radio wave transmission source was shielded with aluminum foil.

[0064] 《Damage Resistance》 As can be seen from the description in Table 1 above, in Test Specimen 4 without both the protective layer and the second base material layer, that is, without the coating layer, both damage to the antenna material and surface scratches occurred. In contrast, in Test Specimens 2, 3, and 7 with only one of the protective layer and the second base material layer missing, or in Test Specimen 8 with a thin protective layer (less than 2.0 g / m 2 ), it was possible to prevent damage to the antenna material and cause almost no surface scratches. Furthermore, in Test Specimens 1, 5, and 6 with both the protective layer and the second base material layer, it was confirmed that neither damage to the antenna material nor surface scratches occurred.

[0065] 《Stain Resistance》 As can be seen from the description in Table 1 above, in the test specimen 4 without both the protective layer and the second base material layer, that is, without the coating layer, contaminants remained. In contrast, in the test specimen 3 without the protective layer and the test specimen 8 with a thin protective layer (less than 2.0 g / m 2 ), the remaining contaminants could be almost eliminated. Furthermore, in the test specimens 1, 2, 5 to 7 with a thick protective layer (2.0 g / m 2 or more), it was confirmed that no contaminants remained at all.

[0066] 《Concealability》 As can be seen from the description in Table 1 above, in the test specimen 6 without the pattern layer on the first base material layer with a low concealment rate (less than 0.8), the antenna material was visible. In contrast, in the test specimen 5 without the pattern layer on the first base material with a high concealment rate (0.8 or more), the antenna material was hardly visible. Furthermore, in the test specimens 1 to 4, 7, and 8 with the pattern layer, it was confirmed that the antenna material was not visible at all.

[0067] 《Presence or Absence of Wrinkles》 As can be seen from the description in Table 1 above, in the test specimen 7 (less than 50 μm) with a thin combined thickness of the first base material layer and the second base material layer, wrinkles occurred when embedding the antenna material in the primer layer. In contrast, in the test specimens 1 to 6 and 8 (50 μm or more) with a thick combined thickness of the first base material layer and the second base material layer, it was confirmed that no wrinkles occurred when embedding the antenna material in the primer layer.

[0068] 《Comprehensive Evaluation》 As a result of the above-mentioned tests, in the test specimens 4 and 6 that were marked with "×" in at least one of scratch resistance, stain resistance, and concealability, problems occurred in practicality, so they were marked with "×". In contrast, in the test specimens 2, 3, 5, and 8 that were not marked with "×" and were marked with "△" in at least one of scratch resistance, stain resistance, and concealability (excluding the presence or absence of wrinkles), there were no particular problems in practicality and they were practical, so they were marked with "△". Furthermore, in the test specimen 1 that was marked with "〇" in all items, excellent practicality was shown, so it was marked with "〇".

Industrial Applicability

[0069] The cosmetic sheet according to the present invention can relay radio waves without power supply while preventing damage, dirt, etc. of the antenna material and without impairing the aesthetic appearance, and thus can be extremely beneficially used industrially.

Explanation of reference numerals

[0070] 10 wall 100, 200 cosmetic sheet 110 film layer 110a embossed pattern 111 first base material layer 112 second base material layer 113 pattern layer 114 protective layer 115 primer layer 120, 220 antenna material 121, 221 transmitting and receiving section 122 conduction section 130 adhesive layer

Claims

1. A film layer made of a flexible resin, An antenna material made of a metal wire provided on one surface side of the film layer, Comprising, The film layer is, A concealment layer provided with the antenna material on one surface side and having flexibility and light-shielding properties, A coating layer provided on the other surface side of the concealment layer and having flexibility and light-transmittance, A decorative sheet characterized by comprising.

2. The concealment layer is, A first base material layer disposed so that the antenna material is positioned on one surface side and having flexibility, A pattern layer provided on the other surface side of the first base material layer and having light-shielding properties, The decorative sheet according to claim 1, characterized by comprising.

3. The concealment layer is, Comprising a primer layer provided on one surface side of the first base material layer The decorative sheet according to claim 2, characterized by this.

4. The coating layer is, A second base material layer disposed so that one surface side is positioned on the other surface side of the concealment layer and having flexibility and light-transmittance, A protective layer provided on the other surface side of the second base material layer and having flexibility and light-transmittance, The decorative sheet according to claim 2 or 3, characterized by comprising.

5. Comprising an adhesive layer provided so as to cover one surface side of the film layer and the antenna material The decorative sheet according to any one of claims 1 to 4, characterized by this.

6. The light-shielding property of the first base material layer is such that the hiding ratio is 0.8 or more The decorative sheet according to claim 2, characterized by this.

7. The first base material layer has a thickness of 50 μm or more and 300 μm or less The decorative sheet according to claim 2 or 3, characterized by this.

8. The protective layer has a basis weight of 2.0 g / m ２ or more and 7.0 g / m ２ or less The decorative sheet according to claim 4, characterized by this.

9. The combined thickness of the first base material layer and the second base material layer is 50 μm or more and 300 μm or less The decorative sheet according to claim 4, characterized by this.

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