JP2005319585A - Decorative molded product capable of being irradiated from its backside - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decorative molded product capable of being irradiated from its backside capable of expanding the degree of freedom of a color capable of being utilized in a translucent layer and a light impervious layer while realizing a design wherein a translucent part and a light shielding part are assimilated. <P>SOLUTION: The decorative molded product 1 capable of being irradiated from its backside is constituted by sequentially laminating the translucent layer 32 formed over the translucent part and the light shielding part adjacent to each other and the light shielding layer 34 only formed on at least one light shielding part on the surface of a molded product from a visually confirming side. When the total light transmissivity of the translucent part is set to X(%), the total light transmissivity of the light impervious part is set to Y(%) and the luminous intensity of the backside of the decorative molded product irradiated by a back light source is set to Z(lx), conditions of 2≤X≤10, 10Y≤X and Z(X-Y)≥10 are formed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a decorative molded product that can be illuminated from the back surface.

  Conventionally, decorative molded products that can be illuminated from the back side are designed and designed with emphasis on the fact that the pattern of the translucent part is brightly illuminated when illuminated and that the entire product exhibits a beautiful design when not illuminated. It was.

  However, in recent years, when the light source is illuminated from the back side, the pattern of the translucent part is visible, but in the state where the light source is not illuminated from the back side, the pattern is assimilated with the surrounding light shielding part, and its existence cannot be understood. There is a demand for an illuminated decorative molded product that exhibits such a design.

  As an invention of such a decorative molded product, the color difference between the non-light-transmitting part and the light-shielding part is reduced to make the hue of similar colors, and the light transmittance between the light-transmitting part and the light-shielding part is made different. There was an invention of Patent Document 1 as follows.

JP 2001-347539 A

  However, even if the color difference between the light-transmitting part and the light-shielding part is reduced to make the hues of similar colors, the difference in color between the light-transmitting part and the light-shielding part when not illuminated is often noticeable, satisfying the user There is a problem that the design in which the light transmitting part and the light shielding part are assimilated cannot be obtained.

  In addition, the colors that can be used for the light-transmitting layer and the light-shielding layer are limited by the color difference, and there is a problem that the degree of freedom of the design is impaired.

  In addition, since the illuminance on the back of the decorative molded product illuminated by the back light source is not taken into account, there is a problem that a decorative molded product with satisfactory illumination visibility cannot be obtained depending on the type of light source and setting conditions. there were.

  Therefore, the present inventor has made the following invention in order to solve the above problems. That is, according to the first aspect of the present invention, the light transmitting portion and the light shielding portion are adjacent to each other, and the light transmitting layer and the light transmitting layer formed over the light shielding portion and the light shielding layer formed only in the light shielding portion are provided. A decorative molded product that is sequentially laminated on the surface of the molded product from the viewing side and that can be illuminated from the back side. The total light transmittance of the light transmitting part is X (%), and the total light transmittance of the light shielding part is Y (%). When the illuminance on the back of the decorative molded product illuminated by the back light source is Z (lux), the following conditions are satisfied: 2 ≦ X ≦ 10, 10Y ≦ X, Z (XY) ≧ 10 It is a decorative molded product that can be illuminated from the back.

  In the second aspect of the present invention, the light-transmitting part and the light-shielding part are adjacent to each other, and the light-transmitting part and the light-transmitting layer formed over the light-shielding part and the light-shielding layer formed only on the light-shielding part are provided. A decorative molded product that is sequentially laminated on the surface of the molded product from the viewing side and that can be illuminated from the back side. The total light transmittance of the light transmitting part is X (%), and the total light transmittance of the light shielding part is Y (%). When the illuminance on the back of the decorative molded product illuminated by the back light source is Z (lux), the following conditions are satisfied: 2 ≦ X ≦ 3.5, 10Y ≦ X, Z (XY) ≧ 10 It is a decorative molded product that can be illuminated from the back.

  According to a third aspect of the present invention, there is provided a decorative molded product that can be illuminated from the back side, wherein the light shielding layer of the light shielding portion is a concealing metal thin film layer.

  According to the present invention, there is an effect that the degree of freedom of colors that can be used for the light transmitting layer and the light shielding layer can be expanded while realizing a design in which the light transmitting portion and the light shielding portion are assimilated.

  Moreover, under suitable illumination conditions, there is also an effect that a decorative molded product having visibility such that the pattern of the translucent part is raised can be obtained.

  Hereinafter, an example of the decorative molded product of the present invention will be described. In the decorative molded product 1 of the present invention, the light-transmitting portion 42 and the light-shielding portion 44 are adjacent to each other, and only the light-transmitting layer 32 and the light-shielding portion 44 formed over the light-transmitting portion 42 and the light-shielding portion 44 are formed. The light-shielding layer 34 is a decorative molded product that can be illuminated from the back surface, which is formed by sequentially laminating the surface of the molding resin 2 from the viewing side (see FIGS. 1 and 2).

  The decorative molded product 1 is an injection molding of an insert film 7 (see FIG. 3) or a transfer film 8 (see FIG. 4) in which a light transmitting layer 32 and a light shielding layer 34 are laminated on at least a transparent substrate sheet 30. The mold is placed in a mold 5 and clamped, and a translucent molding resin 2 is injected into the cavity, so that the insert film 7 or transfer film is formed on the surface simultaneously with the formation of the translucent molding resin 2. 8 can be obtained by bonding (see FIGS. 6 and 7).

  The insert film 7 has a configuration in which a light-transmitting layer 32, a light-shielding layer 34, and an adhesive layer 35 are sequentially laminated on the base sheet 30 (see FIG. 3). The decorative molded product 1 in which the light layer 32, the light shielding layer 34, and the adhesive layer 35 are formed on the molding resin 2 is obtained (see FIG. 1).

  The transfer film 8 has a configuration in which a release layer 39, a release layer 31, a light-transmitting layer 32, a light-shielding layer 34 and an adhesive layer 35 are sequentially laminated on a base sheet 30 (see FIG. 4), and adheres to the molding resin 2. After that, the base sheet 30 and the release layer 39 are peeled and removed, and the transfer layer 3 composed of a laminate of the peel layer 31, the light transmitting layer 32, the light shielding layer 34, and the adhesive layer 35 is formed on the molding resin 2. A decorative molded product 1 is obtained (see FIG. 2).

  In addition, when the base sheet 30 has releasability, the release layer 39, when the translucent layer 32 has releasability, the release layer 31, and when the translucent layer 32 and the light shielding layer 34 have adhesiveness. Each of the adhesive layers 35 may be omitted.

  In addition, the insert film 7 and the transfer film 8 may be preformed by a mold pressing method, a pneumatic pressing method, a vacuum forming method, or the like before being installed in the injection molding die 5 or clamped. Prior to this, preliminary molding may be performed by a method such as vacuum suction from the mold cavity in the injection mold 5. Further, in order to perform positioning in the injection mold 5, marking by printing may be performed, or a positioning hole may be provided by punching with a Thomson mold.

  The material of the base sheet 30 is polyester resin, polycarbonate resin, polyamide resin, acrylic resin, polypropylene resin, polyethylene resin, polyvinyl chloride resin, polyurethane resin, polystyrene resin, cellulose resin, acetate. There is a single-layer resin sheet selected from a series resin, an acrylonitrile butadiene styrene series resin, or a laminated sheet or a copolymer sheet made of two or more resins selected from them.

  The film thickness of the base sheet 30 is preferably 5 μm to 5 mm. This is because if the film thickness is less than 5 μm, there is a problem that the sheet is not rigid and the light-transmitting layer 32 and the light shielding layer 34 cannot be supported, and if it is thicker than 5 mm, the sheet is too rigid and difficult to handle.

  The formation method of the base sheet 30 may be a general film forming method such as extrusion molding, calendar molding, or casting. In addition, the base sheet 30 may be subjected to easy adhesion treatment such as corona discharge treatment, plasma treatment, and easy adhesion primer coating on one side or both sides as required.

  In the case of the insert film 7, it is necessary to use a base sheet 30 having translucency. In the case of the transfer film 8, since the base sheet 30 does not remain on the surface of the molded product, it is not necessary to use a translucent film. Therefore, in the case of the transfer film 8, the material of the base sheet 30 may be a metal foil such as an aluminum foil or a copper foil, glassine paper, coated paper, and a sheet in which these are combined.

  The light transmissive layer 32 is a layer through which light irradiated by the back light source 11 is easily transmitted, and the light transmissive part 42 is a portion that is brightly illuminated by the light irradiated by the back light source 11. Further, the light shielding layer 34 is a layer that hardly transmits the light irradiated by the back light source 11, and the light transmitting portion 42 is a part that is hardly illuminated by the light irradiated by the back light source 11.

  In the decorative molded product 1 of the present invention, the total light transmittance of the all-layer light transmitting portion 42 including the molded product positioned in the light transmitting portion 42 is X (%), and the total light transmittance of the light shielding portion 44 is Y. (%), When the illuminance of the back surface of the decorative molded product 1 irradiated by the back surface light source 11 is Z (lux), 2 ≦ X ≦ 10 (more preferably 2 ≦ X ≦ 3.5), 10Y ≦ The feature is that the condition of X, Z (XY) ≧ 10 is satisfied.

  Here, the total light transmittance refers to a value indicating the ratio of the incident light amount and the total light amount that has passed through the test piece in terms of visible light and ultraviolet light as a percentage (see JIS-K-6717).

  If the total light transmittance X of the translucent part 42 is formed to be less than 10%, the translucent layer 32 is less affected by the color of the light shielding layer 34, so the translucent part 42 when viewed from the viewing side. And the color of the light shielding portion 44 are easily assimilated. Further, if the total light transmittance X of the light transmitting portion 42 is formed to be less than 3%, the effect is enhanced.

  On the other hand, if the total light transmittance X of the translucent part 42 is formed to be 2% or more and the illuminance Z on the back surface of the decorative molded product 1 is increased, the pattern of the translucent part 42 is recognized at the time of illumination. Furthermore, if the maximum value of the total light transmittance Y of the light shielding portion 44 is 1/10 or less of the total light transmittance X of the light transmitting portion 42 and the illuminance Z on the back surface of the decorative molded product 1 is increased, The contrast between the light transmitting part 42 and the light shielding part 44 is increased.

  Then, the back light source 11 is set such that a value obtained by multiplying the difference (X−Y) in the total light transmittance between the light transmitting portion 42 and the light shielding portion 44 by the illuminance Z on the back surface of the decorative molded product 1 is 10 lux or more. By setting the luminous intensity to be high, it is possible to obtain an effect that the pattern of the translucent portion 42 is clearly raised during illumination.

  Table 1 shows samples 1 to 20 for the decorative molded product 1 in which the insert film 7 or the transfer film 8 is integrated with the front surface or the back surface of the molded product, and the colors of the light transmitting portion 42 and the light shielding portion 44 when not illuminated. Assimilation property and visibility at the time of illumination, the total light transmittance X (%) of the light transmitting portion 42, the total light transmittance Y (%) of the light shielding portion 44, and the decorative molded product 1 The result of putting together about the correlation of the illumination intensity Z (lux) of the back surface of is shown. This proves the effect of the present invention.

※なお表中の同化性、視認性の評価の◎、○、△、×はそれぞれ下記の状態を意味する。
＜同化性＞
◎：非照光時に、透光部と遮光部とが同化している。
○：非照光時に、ほとんど透光部と遮光部とが同化している。
△：非照光時に、若干透光部と遮光部とが同化している。
×：非照光時に、透光部と遮光部とが同化していない。
＜視認性＞
○：照光時に、透光部のパターンが明白に認識できる。
△：照光時に、透光部と遮光部の境界がぼやけるものの透光部のパターンが認識できる。
×：照光時に、透光部のパターンの判別が困難。

* In the table, the evaluations of assimilation and visibility ◎, ○, △, and X mean the following states, respectively.
<Assimilation>
A: The light-transmitting part and the light-shielding part are assimilated when not illuminated.
○: When not illuminated, the light transmitting part and the light shielding part are almost assimilated.
(Triangle | delta): The light transmission part and the light-shielding part are assimilated a little at the time of non-lighting.
X: The light-transmitting part and the light-shielding part are not assimilated when not illuminated.
<Visibility>
○: The pattern of the translucent part can be clearly recognized during illumination.
(Triangle | delta): At the time of illumination, although the boundary of a translucent part and a light-shielding part blurs, the pattern of the translucent part can be recognized.
X: It is difficult to distinguish the pattern of the translucent part during illumination.

  As the material of the light transmissive layer 32, vinyl chloride-vinyl acetate resin, polyamide resin, chlorinated polypropylene resin, epoxy resin, cyanoacrylate resin, polyester resin, acrylic resin, urethane resin, polyvinyl acetal resin, Examples thereof include those obtained by using a translucent resin such as a polyester urethane resin, a cellulose ester resin, and an alkyd resin as a binder and adding a small amount of a colorant such as a metal pigment, an inorganic pigment, or a dye.

  The light-transmitting layer 32 may be formed by various printing methods such as gravure, offset, and screen, and coating methods such as gravure coating, reverse coating, roll coating, comma coating, and lip coating. Also, methods such as painting and dipping may be used.

  The film thickness of the light transmitting layer 32 is preferably 0.5 μm to 50 μm. This is because if the film thickness is less than 0.5 μm, there is a problem that sufficient abrasion resistance and scratch resistance cannot be obtained, and if it is more than 50 μm, there is a problem that it is difficult to dry after printing. Moreover, a translucent layer may be formed by laminating two or more layers as necessary, or may be formed in parallel.

  As the material of the light shielding layer 34, vinyl chloride-vinyl acetate resin, polyamide resin, chlorinated polypropylene resin, epoxy resin, cyanoacrylate resin, polyester resin, acrylic resin, polyurethane resin, polyvinyl acetal resin, polyester Examples thereof include a resin such as urethane resin, cellulose ester resin, alkyd resin and the like containing a concealing metal pigment, inorganic pigment, dye or the like as a colorant.

  The light shielding layer 34 may be formed by various printing methods such as gravure, offset, and screen, and coating methods such as gravure coating, reverse coating, roll coating, comma coating, and lip coating. Also, methods such as painting and dipping may be used. Further, the light shielding layer 34 may be formed by stacking two or more layers as necessary. Further, a concealing metal thin film layer may be used as the light shielding layer 34.

  The metal thin film layer is formed so as to obtain a necessary concealing property by a vacuum deposition method, a sputtering method, an ion plating method or the like. Examples of the metal used include metals such as aluminum, nickel, gold, platinum, chromium, iron, copper, tin, indium, silver, titanium, lead, and zinc, and alloys or compounds thereof. In addition, you may provide the anchor layer 33 for improving adhesiveness before providing the light shielding layer 34 (refer FIG. 5).

  The thickness of the light shielding layer 34 is preferably 0.5 μm to 50 μm. This is because if the film thickness is less than 0.5 μm, there is a problem that sufficient light shielding properties cannot be obtained, and if it is more than 50 μm, there is a problem that it is difficult to dry after printing.

  As a form of illumination, when the pattern of the translucent part 42 such as characters and figures is displayed by being bordered by the light shielding part 44 (see FIG. 1), or by being bordered by the translucent part 42, characters, figures, etc. The pattern of the light shielding layer 44 is displayed (see FIG. 5).

  Examples of the material of the release layer 39 include melamine resin, silicon resin, fluorine resin, alkyd resin, phenol resin, and the like, and preferable materials are appropriately selected depending on the release property from the release layer. Select.

  As the material of the release layer 31, acrylic resin, vinyl resin, urethane resin, polyester resin, polypropylene resin, polyethylene resin, polystyrene resin, polycarbonate resin, vinylon resin, acetate resin, polyamide resin A resin or the like can be used, and a preferable material is appropriately selected according to the peelability from the release layer 31.

  The method for forming the release layer 39 and the release layer 31 may be a method such as gravure printing, offset printing, or screen printing, or a method such as painting, dipping, or reverse coater.

  The film thickness of the release layer 39 and the release layer 31 is preferably 0.5 μm to 50 μm. This is because if the film thickness is less than 0.5 μm, there is a problem that sufficient releasability or releasability cannot be obtained, and if it is more than 50 μm, it is difficult to dry after printing.

  The material of the adhesive layer 35 is acrylic resin, vinyl resin, urethane resin, polyester resin, polypropylene resin, polyethylene resin, polystyrene resin, polycarbonate resin, vinylon resin, acetate resin, polyamide resin. Resin can be mentioned, A preferable material is suitably selected according to adhesiveness with molding resin.

  The method for forming the adhesive layer 35 may be various printing methods such as gravure, offset, and screen, and coating methods such as gravure coating, reverse coating, roll coating, comma coating, and lip coating. Also, methods such as painting and dipping may be used.

  The film thickness of the adhesive layer 35 is preferably 0.5 μm to 10 μm. If the film thickness is less than 0.5 μm, there is a problem that sufficient adhesion cannot be obtained, and if it is more than 10 μm, there is a problem that it is difficult to dry after printing.

  In addition, you may provide printing layers, such as a grain pattern, a stone pattern, a cloth pattern, a character, a geometric pattern, a solid pattern, separately as needed.

  Examples of the molding resin 2 include acrylic resin, acrylonitrile styrene resin, styrene resin, polycarbonate resin, acrylonitrile butadiene styrene resin, silicon resin, nylon resin, urethane resin, thermoplastic elastomer resin, polyethylene resin, and polypropylene resin. Use one having light properties.

  On a polycarbonate film having a thickness of 200 μm, a light-transmitting layer having a solid pattern was formed by a silk printing method using a light-transmitting silver metallic ink made of an aluminum flake pigment and an acrylic resin.

  Next, a light-shielding layer having a blank character pattern was formed by screen printing using black ink made of acrylic resin. Subsequently, the adhesive layer of the whole surface solid pattern was formed by the screen printing method using the transparent ink which consists of polycarbonate-type resin, and the insert film was obtained.

  This insert film was cut into an appropriate size by a Thomson die, and then primary molded into a desired shape by a die press method to provide a positioning guide hole. Next, this insert film was placed in an injection mold so that the adhesive layer was positioned at the gate portion, polycarbonate molding resin “Taflon IR1700” made by Idemitsu Petroleum was injected, cooled and solidified, and the insert film was molded. A decorative molded product integrated on the surface of the resin was obtained.

  This decorative molded product is used for a casing for a mobile phone. In this decorative molded product, when the light transmittance X (%) of all layers including the molded product located in the translucent part was measured using a total light transmittance measuring device MODEL1001DP manufactured by Nippon Denshoku Industries Co., Ltd., X = 2. 0. Similarly, when the total light transmittance Y (%) of the light shielding portion was measured, Y = 0.2.

  Moreover, it was Z = 602 when the illumination intensity Z (lux) of the decorative molded product back surface at the time of illumination was measured using the Tokyo Optical TOPCON IM-2D illuminance meter. The casing for the cellular phone was entirely silver metallic in a state where it was not illuminated by a light source, and the pattern of the translucent portion was not recognized. However, when the light source was illuminated from the back side, the translucent part was lifted up and the character pattern could be clearly recognized.

  On a polyethylene terephthalate film having a thickness of 75 μm and subjected to easy adhesion on both sides, a translucent layer having a solid pattern was formed by a roll coating method using translucent white ink made of urethane two-component curable resin. Next, a transparent vapor-deposited anchor layer having a solid pattern was formed by a gravure printing method using a translucent transparent ink made of an acrylic two-component curable resin.

  This was heat-treated at 180 ° C. × 30 seconds / m, and then an aluminum metal film layer having a thickness of 600 ± 50 mm was formed on the entire surface by vacuum deposition. Subsequently, a character pattern masking layer was formed by screen printing using black ink made of a polyester-based two-component curable resin. This was thermally dried at 80 ° C. for 15 minutes, allowed to stand at room temperature for 24 hours, and then etched with an alkali solution (4% by weight of aqueous sodium hydroxide) to remove unnecessary aluminum metal film layers other than the masking layer forming portion. After removing the masking layer, the masking layer was removed to form a light shielding layer having a character pattern made of an aluminum metal film layer.

  Next, using a transparent ink made of a polycarbonate-based resin, an adhesive layer having a solid pattern was formed by a screen printing method to obtain an insert film.

  After cutting this insert film into an appropriate size, it is first molded into a desired shape by a die press method, and then placed in an injection mold so that the adhesive layer is located at the gate portion, and then molded by Idemitsu Petroleum. When the resin “Taflon IR1700” was injected, cooled, solidified, and taken out, a decorative molded product in which the insert film was integrated on the surface of the molding resin was obtained.

  The use of this decorative molded product is a luminaire housing. In this decorative molded product, the total light transmittance X (%) of all layers including the molded product positioned in the light transmitting portion was measured using a total light transmittance measuring device MODEL1001DP manufactured by Nippon Denshoku Industries Co., Ltd. X = 4. .5. Similarly, when the total light transmittance Y (%) of the light shielding portion was measured, Y = 0.3.

  Moreover, it was Z = 1102 when the illumination intensity Z (lux) of the decorative molded product back surface at the time of illumination was measured using the Tokyo Optics TOPCON IM-2D illuminance meter. The lighting fixture casing was entirely white when not illuminated by the light source, and the pattern of the light transmitting portion and the light shielding portion was not recognized. However, when the light source was illuminated from the back side, the light-shielding part was raised and the character pattern could be clearly recognized.

  On a polyethylene terephthalate film having a thickness of 38 μm, a release layer was formed by a gravure printing method using a transparent ink made of a melamine resin, and then a release layer was formed by a gravure printing method using a transparent ink made of an acrylic resin. . Next, a translucent layer having a solid pattern was formed by a roll coating method using translucent white ink made of an acrylic-vinyl resin.

  Next, a transparent vapor-deposited anchor layer having a solid pattern was formed by a gravure printing method using a translucent transparent ink made of an acrylic two-component curable resin.

  This was heat-treated at 180 ° C. × 30 seconds / m, and then an aluminum metal film layer having a thickness of 600 ± 50 mm was formed on the entire surface by vacuum deposition. Subsequently, a masking layer having a graphic pattern was formed by screen printing using a vinyl chloride-vinyl acetate black ink. This was thermally dried at 80 ° C. for 15 minutes, allowed to stand at room temperature for 24 hours, and then etched with an alkali solution (4% by weight of aqueous sodium hydroxide) to remove unnecessary aluminum metal film layers other than the masking layer forming portion. After removing the masking layer, the masking layer was removed to form a shading layer having a graphic pattern made of an aluminum metal film layer.

  Next, using a transparent ink made of vinyl chloride-vinyl acetate resin, a solid pattern adhesive layer was formed by a gravure printing method to obtain a transfer film.

  This transfer film is placed in an injection mold so that the adhesive layer is located at the gate portion, and acrylonitrile butadiene styrene molding resin “Toyolac 920” manufactured by Toray is injected, cooled and solidified, taken out, and the surface of the decorative molded product When the polyethylene terephthalate film was peeled off, a decorative molded product in which the transfer layer was integrated with the surface of the molded product was obtained. This decorative molded product is used for home appliance housings.

  In this decorative molded product, the total light transmittance X (%) of all layers including the molded product located in the translucent part was measured using a total light transmittance measuring device MODEL1001DP manufactured by Nippon Denshoku Industries Co., Ltd. X = 2.0. Similarly, when the total light transmittance Y (%) of the light shielding portion was measured, Y = 0.18. Moreover, it was Z = 604 when the illumination intensity Z (lux) of the decoration molded product back surface at the time of illumination was measured using the Tokyo Optical TOPCON IM-2D illuminance meter.

  This home appliance housing was entirely white when the light source was not illuminated from the back side, and the pattern of the light transmitting portion and the light shielding portion was not recognized. However, when the light source was illuminated from the back surface, the shading part was lifted, and the figure pattern could be clearly recognized.

  The decorative molded product obtained by the present invention is used for panel members used for communication equipment, lighting equipment, home appliances, information equipment, housing equipment, office equipment, automobile parts, and the like.

It is sectional drawing which shows an example of the decorative molded product which concerns on this invention. It is sectional drawing which shows an example of the decorative molded product which concerns on this invention. It is sectional drawing which shows an example of the insert film for manufacturing the decorative molded product which concerns on this invention. It is sectional drawing which shows an example of the transfer foil for manufacturing the decorative molded product which concerns on this invention. It is sectional drawing which shows an example of the insert film for manufacturing the decorative molded product which concerns on this invention. It is sectional drawing which shows an example of the manufacturing process for manufacturing the decorative molded product which concerns on this invention. It is sectional drawing which shows an example of the manufacturing process for manufacturing the decorative molded product which concerns on this invention.

DESCRIPTION OF SYMBOLS 1 Decorative molded product 2 Molding resin 3 Transfer layer 5 Injection mold 7 Insert film 8 Transfer film 11 Back surface light source 30 Substrate sheet 31 Peel layer 32 Translucent layer 34 Light-shielding layer 35 Adhesive layer 39 Release layer 42 Translucent part 44 Shading part

Claims (3)

The light-transmitting part and the light-shielding part are adjacent to each other, and the light-transmitting part and the light-transmitting layer formed over the light-shielding part and the light-shielding layer formed only on the light-shielding part are sequentially laminated on the surface of the molded product from the viewing side. A decorative molded product that can be illuminated from the back surface, wherein the total light transmittance of the light transmitting portion is X (%), the total light transmittance of the light shielding portion is Y (%), and the decorative molded product is illuminated by the back light source. A decorative molded product that can be illuminated from the back surface, wherein the following conditions are satisfied when the back surface illuminance is Z (lux).
2 ≦ X ≦ 10
10Y ≦ X
Z (XY) ≧ 10 The light-transmitting part and the light-shielding part are adjacent to each other, and the light-transmitting part and the light-transmitting layer formed over the light-shielding part and the light-shielding layer formed only on the light-shielding part are sequentially laminated on the surface of the molded product from the viewing side. A decorative molded product that can be illuminated from the back surface, wherein the total light transmittance of the light transmitting portion is X (%), the total light transmittance of the light shielding portion is Y (%), and the decorative molded product is illuminated by the back light source. A decorative molded product that can be illuminated from the back surface, wherein the following conditions are satisfied when the illuminance on the back surface is Z (lux).
2 ≦ X ≦ 3.5
10Y ≦ X
Z (XY) ≧ 10 The decorative molded product that can be illuminated from the back surface according to claim 1, wherein the light shielding layer of the light shielding portion is a concealing metal thin film layer.

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