JP2000289178A - Decorated molded product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a change of a color of a decorated sheet of an elongated portion to be scarcely apparent by a decorated molded product obtained by integrally laminating the sheet on a resin molding by an injection molding and simultaneously decorating method or the like. SOLUTION: The decorated molded product D is obtained by integrally laminating a decorating sheet S constituted of an at least transparent thermoplastic resin sheet 1 and a colored ink layer 2 formed over the entire surface of the rear surface of the resin sheet on a surface of a colored resin molding M so that the ink layer side is directed toward the molding, and a color difference of the ink layer and the molding is set to 30 or below by a color difference formula of L*a*b* of the International Illumination Committee. A design ink layer 3 may be provided between the sheet and the ink layer and a transparent adhesive layer 4 may be provided between the ink layer and the molding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a decorative molded product in which a decorative sheet is laminated and integrated on the surface of a resin molded product. In particular, in a decorative molded product in which a decorative sheet is stretched and molded by a simultaneous injection molding decorative method or the like and laminated and integrated with a resin molded product, a change in the color of the decorative sheet in the stretched portion is less noticeable. Related to decorative molded products.

[0002]

2. Description of the Related Art Conventionally, decorative molded products obtained by decorating the surface of a resin molded product have been used for various purposes. For example, in the simultaneous injection molding decorating method disclosed in Japanese Patent Publication No. 50-19132, etc., a decorative sheet having a decorative surface is formed by laminating and integrating a decorative sheet on the surface of a resin molded product at the same time. A molded article is obtained. This is a method by the simultaneous injection molding and laminating method of the simultaneous injection molding and decorating method.

[0003]

By the way, the pattern expressed by the decorative sheet laminated on the surface of the resin molded product is usually on the near side (the side to be viewed) of the undercolor by the colored ink layer or the like formed over the entire surface. In addition, a pattern of a desired color is often expressed as a structure provided with a pattern ink layer having a pattern pattern. In the decorative molded product, when the decorative sheet is laminated and integrated on the surface of the resin molded product, the decorative sheet is usually stretched, molded, and laminated and integrated. For this reason, since the thickness of the stretched decorative sheet becomes thin, the color of the pattern changes, and if the change is large, the decorative sheet may not be formed as a product. For this reason, in the conventional decorative molded product, for example, the following measures have been taken so that the color change of the stretched portion of the decorative sheet does not occur as much as possible and is not noticeable even if it occurs. Was.

For example, in a resin molded product obtained by injection molding, this is colored to form a colored resin molded product, and the color of the colored resin molded product is used as a base color. The decorative molded product has a configuration in which a decorative sheet in which a pattern ink layer is formed on a transparent resin sheet is laminated and integrated with the colored resin molded product. For this reason, a coloring agent such as a pigment was added to the molding resin to color the resin molding.

[0005] Alternatively, the background color is also expressed on the decorative sheet side. For this reason, a colored resin sheet is used as the base sheet of the decorative sheet. Then, a pattern ink layer is printed on the front side of the colored resin sheet to express a pattern pattern.
Usually, a decorative sheet having a structure in which a transparent resin sheet is laminated as a protective layer on a colored ink layer is often used (see Japanese Patent Publication No. 61-17255).

However, in the decorative molded article having the above structure, if the color and the amount (or the mixing ratio) of the colorant added to the colored resin molded article for each lot (or for each molding shot in the same lot). ), A slight change in the color of the colored resin molding due to a change or dispersion in the dispersion state, etc., directly affects the color of the pattern of the product (decorative molded product), and depending on the degree, the product may not be feasible as a product. there were.

[0007] In the decorative molded article having the above structure, the base sheet (normally, 0.1 to 0.5 mm in thickness) is colored, so that the color of the resin molded article (the color in this case is: It is not always necessary to use it as the base color of the product pattern,
Even if the influence of light from the back side is eliminated or the color such as black is changed for other purposes, the color of the pattern of the product is not affected. However, as described above, usually, the resin sheet is a colored base sheet and a transparent resin sheet.
Because it becomes a layer, the cost increases. In addition, since the total thickness of the decorative sheet is increased and the cutting is difficult, the trimming and handling of unnecessary portions (for example, the periphery and the internal window portion) after lamination and integration with the resin molded product are difficult.

Accordingly, an object of the present invention is to provide a decorative molded article in which a decorative sheet is stretched and molded by an injection molding simultaneous decorating method or the like and laminated and integrated on the surface of a resin molded article. Is to make the color change of the pattern less noticeable.

[0009]

In order to solve the above-mentioned problems, a decorative sheet comprising a transparent thermoplastic resin sheet and a colored ink layer formed on the entire back surface of the transparent thermoplastic resin sheet has been developed. On the surface of the colored resin molding,
The colored ink layer side is laminated and integrated so that the colored resin layer side faces the colored resin molded article side, and the color difference between the colored ink layer and the colored resin molded article is L ^* a ^* b ^* color specification of the International Commission on Illumination. It was configured to be 30 or less in the color difference equation depending on the system. With such a configuration, since the color of the colored ink layer and the color of the colored resin molded product are substantially the same, the decorative sheet is laminated and integrated following the surface shape of the colored resin molded product. In the stretched portion, that is, in the portion where the concealing property is reduced, the color of the colored resin molded product is transmitted through the decorative sheet and mixed with the color of the decorative sheet, but since the colors to be mixed are substantially the same color, ,
The change in the color expressed by the decorative molded product can be reduced. Further, even if the color of the colored resin molded article varies between lots or within a lot and is slightly different, the colored ink layer can cover and reduce the influence.

Further, the decorative molded article of the present invention has a configuration in which the decorative molded article further has a pattern ink layer between the transparent thermoplastic resin sheet and the colored ink layer. By adopting such a configuration, a pattern pattern is expressed by the pattern ink layer, and a decorative molded product having a higher design can be obtained.

Further, the decorative molded article of the present invention has a configuration in which any of the decorative molded articles described above further comprises a transparent adhesive layer between the colored ink layer and the colored resin molded article. With such a configuration, since the adhesive layer is transparent, the adhesive layer improves the adhesion between the decorative sheet and the colored resin molded article without affecting the color expressed by the decorative molded article. it can.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view illustrating one embodiment of the decorative molded product of the present invention.

[Layer Structure] The layer structure of the decorative sheet S used in the decorative molded article of the present invention is at least formed on the transparent thermoplastic resin sheet 1 and the entire rear surface of the transparent thermoplastic resin sheet. And a colored ink layer 2 formed.
Further, as in the decorative molded product D illustrated in FIG. 1, in the layer configuration of the portion formed by laminating and integrating the decorative sheet S, the pattern ink layer between the transparent thermoplastic resin sheet 1 and the coloring ink layer 2 is further formed. 3. There is also a layer configuration having a transparent adhesive layer 4 between the colored ink layer 2 and the colored resin molded product M. Although the transparent adhesive layer 4 is illustrated as a layer belonging to the decorative sheet S in the drawing, the decorative molded product D may be a layer not belonging to the decorative sheet S in some cases. That is, when the decorative molded article D is obtained by the injection molding simultaneous decoration method, the transparent adhesive layer 4 is inevitably a constituent element of the decorative sheet S, but the vacuum forming lamination method [Japanese Patent Publication No. No. 45768 (overlay method), Japanese Patent Publication No. 60-58014 (vacuum pressing method)
This is because the transparent adhesive layer 4 may be applied in advance to the colored resin molded product side.

[Color Difference] In the decorative molded article of the present invention, the color difference between the colored ink layer 2 and the colored resin molded article M in the above-described layer structure is determined by the International Commission on Illumination (CIE). L
^{The value} was set to 30 or less in a color difference equation using the ^* a ^* b ^* color system. Even if the decorative sheet is stretched and thinned so that the color of the colored resin molded product can be seen through to some extent, by suppressing the color difference value to a color difference of 30 or less, The change is less noticeable. In addition, the color represented by the decorative molded product is, of course, a colored ink layer,
When the colored resin molded product, the colored resin molded product, or the transparent thermoplastic resin sheet is colored, the color of the resin sheet or the like is a combined color.

As the above color difference formula, in addition to the color difference formula using the CIE (International Commission on Illumination) L ^* a ^* b ^* color system,
A color difference equation using the CIE L ^* u ^* v ^* color system, Hunt
er's Lab color system or color difference formula or FMC
(Friele, MacAdam, Chickerin
g) -II or the like. Note that CIE defines both the color system and the color difference formula. In addition, the above L ^* a ^* b
^The color difference formula using the ^* color system or the L ^* u ^* v ^* color system is described in JI
The color difference is also adopted in SZ8730.

However, in this case, the upper limit of the allowable color difference in the present invention differs depending on the color difference formula to be adopted.
However, in any case, the International Commission on Illumination (C
The effect of the present invention can be obtained by setting the color difference to a value corresponding to 30 or less in the color difference formula of L ^* a ^* b ^* color system of IE).

[Transparent Thermoplastic Resin Sheet] The transparent thermoplastic resin sheet 1 is made of a thermoplastic resin sheet in order to have moldability such that the decorative sheet can be formed by following the decorative sheet on the uneven surface. Transparent so that the color of the lower colored ink layer can be seen. The term “transparent” includes translucent. Further, it may be colored and transparent by the addition of a coloring agent, which will be described later for the colored ink layer. The transparent thermoplastic resin sheet serves as a support sheet for the lower colored ink layer, the pattern ink layer, and the like, and also serves as a protective layer for these. The material of the transparent thermoplastic resin sheet is not particularly limited as long as it has the above characteristics. For example, in general, poly (methyl meth) acrylate, poly (meth) ethyl acrylate, poly (butyl meth) acrylate, methyl (meth) acrylate-butyl (meth) acrylate copolymer, polyacrylonitrile Such as acrylic resin [(meth) acryl means acrylic or methacrylic), polyethylene, polypropylene, polymethylpentene, ethylene-propylene copolymer, ethylene-propylene-butene copolymer, olefin-based thermoplastic elastomer, etc. Polyolefin resin, thermoplastic polyester resin such as polyethylene terephthalate, polybutylene terephthalate, ethylene-isophthalate-terephthalate copolymer, fluorine resin such as polyvinyl fluoride, polyvinylidene fluoride, ethylene-tetrafluoroethylene copolymer, poly Boneto, vinyl chloride resin, AS (acrylonitrile - styrene copolymer) resin, ABS (acrylonitrile - butadiene - styrene copolymer) resin sheet made of a resin or the like can be used. The thickness of the transparent thermoplastic resin sheet is not particularly limited, but is generally about 30 to 200 μm.

In the transparent thermoplastic resin sheet, a lubricant such as wax, silica, spherical α
-Various additives such as lubricants composed of particles such as alumina, benzotriazole-based, benzophenone-based, fine particle cerium oxide-based ultraviolet absorbers, light stabilizers such as hindered amine radical scavengers, plasticizers, stabilizers, etc. May be added for adjusting physical properties.

[Colored Ink Layer] The colored ink layer 2 is a colored layer having transparency or, preferably, concealing property and having moldability formed over the entire surface on the back side of the transparent thermoplastic resin sheet. Therefore, the colored ink layer is a solid layer. Since the colored ink layer 2 is formed not in a pattern but on the entire surface, it can be formed by a known coating method such as roll coating using a coating liquid, in addition to a known printing method such as gravure printing. . In the present invention, the latter case is also referred to as a colored ink layer. Usually, this colored ink layer is often used together with a pattern ink layer having a pattern pattern. However, a solid pattern on the entire surface only by the colored ink layer may be used as a pattern of the decorative molded product. The color ink layer is usually applied in an amount of about 3 to 5 g / m ² , but is not limited thereto. If the coating amount is too small, sufficient concealing properties cannot be obtained, and if it is too large, the cost will simply increase.

The colored ink layer 2 comprises an ink (including a coating liquid) composed of a coloring agent such as a pigment and a dye, and various additives appropriately added to the vehicle such as a binder, similarly to a general ink layer. ). As the resin used for the binder, if moldability can be imparted to the colored ink layer,
There is no particular limitation, and it may be appropriately selected from known resins in consideration of other required physical properties such as weather resistance in addition to adhesion.

For example, as the binder resin, one kind of a thermoplastic resin such as acrylic resin, chlorinated polypropylene, vinyl chloride-vinyl acetate copolymer, urethane resin, polyester resin, polyamide resin, etc. A mixture of more than one species is used. In addition, if moldability is satisfied by laminating and decorating decorative sheets before complete curing, a thermosetting resin such as a two-component curable urethane resin can be used.

The colorant is not particularly limited except that the color difference from the colored resin molded product can be reduced to 30 or less by the color difference formula using the CIE L ^* a ^* b ^* color system. A known coloring agent may be used according to the color to be expressed. For example, colorants include inorganic pigments such as carbon black, titanium white (anatase type, rutile type), red iron oxide, cadmium red, graphite, and cobalt blue; and organic pigments such as quinacridone, isoindolinone, and phthalocyanine blue (or Dyes), metal pigments made of foil powder such as aluminum and brass, and pearlescent (pearl) pigments made of titanium dioxide-coated mica foil powder or the like, or a mixture of two or more kinds. Examples of the coloring agent include Lisor Maroon Toner, Alizarin Lake B, Cadmium Maroon,
B. O. N. Red toner (5B), calcium lithol toner, barium lithol toner, pigment scarlet, B.I. O. N. Red Toner (Y), Lysole Rubin, Brilliant Red Lake R, Lake Red C Barium Toner, Lead Tan, Sodium Risole Toner, Toluidine Toner Light, Cadmium Red Light, Rhodamine Toner B, Rhodamine Toner Y, Para Red Toner Light, Chlorinated Para Red toner, chrome vermillion, bronze orange, dinitroaniline orange, benzidine orange, red-mouthed graphite,
Cadmium orange, cadmium lemon yellow, benzidine yellow, Hansa yellow G, graphite medium, ocher (ocher), coarse sienna, calcined sienna, coarse amber, calcined amber, red iron oxide, yellow iron oxide, malachite green toner, chrome green light , Viridian, Phthalocyanine Green, Peacock Blue Toner, Permanent Peacock Blue, Victoria Blue Toner, Navy Blue, Ultramarine, Alkaline Blue Toner,
P. T. A. Violet toner, zinc sulfide, lithopone, zinc white, lead white, antimony oxide, iron black and the like can also be used.

[Pattern Ink Layer] The pattern ink layer 3 is located on the front side of the coloring ink layer 2 and is a layer that expresses a pattern picture such as a pattern or character. The pattern of the pattern ink layer is arbitrary, and examples of the pattern include a wood pattern, a stone pattern, a grain pattern, a leather pattern, a character, a figure, and a geometric pattern. The pattern ink layer may be formed by printing such as gravure printing or offset printing on the surface on the back side of the transparent thermoplastic resin sheet before the formation of the colored ink layer. The ink used for the picture ink layer may be any known ink similar to that described for the colored ink layer as long as it has moldability, and is not particularly limited. Therefore, the binder resin, the colorant, and the like used in the picture ink layer overlap, and the description is omitted here. It is not necessary that the color expressed by the design ink layer has a color difference from the color of the colored resin molded product within the specific range.

[Transparent Adhesive Layer] The transparent adhesive layer 4 is used when the adhesion between the decorative sheet and the colored resin molded product is insufficient.
Known printing methods such as gravure printing, or roll coating,
It is formed by a known coating method such as spray coating. In the case where the transparent adhesive layer is formed on a colored resin molded product which has been formed in advance before the decorative sheet is laminated, it is only necessary to apply the transparent adhesive layer by spray coating or the like because the formed surface is uneven. By setting the adhesive layer as a transparent layer, if the adhesive layer is colored, the color of the decorative molded product changes depending on the color of the adhesive layer in the stretched decorative sheet, if the adhesive layer is colored. Can prevent.

The transparent adhesive layer is not particularly limited as long as it has adhesiveness and transparency between the colored ink layer and the colored resin molded product, and further has moldability when formed on the decorative sheet side. In consideration of the above, a known resin such as a thermoplastic resin or a thermosetting resin is appropriately selected and used. In the case of forming in advance on the colored resin molded product side, moldability is unnecessary, and thermosetting resin can be easily used. In addition, the thickness of the transparent adhesive layer is usually about 1 to 10 μm.

For example, in the case of a thermoplastic resin, poly (meth)
Acrylic resins such as methyl acrylate, poly (meth) ethyl acrylate, poly (butyl methacrylate), chlorinated polyolefin resins such as chlorinated polypropylene, vinyl acetate resins, polyamide resins, polyisoprene rubber, and polyisobutyl rubber And a rubber-based resin such as styrene-butadiene rubber is used alone or in a mixture of two or more. As the thermosetting resin, a phenol resin, an epoxy resin, a two-component curable urethane resin, or the like is used.

[Colored resin molded product] The colored resin molded product M is colored in such a manner that the color difference from the colored ink layer is 30 or less by the color difference formula using the CIE L ^* a ^* b ^* color system. As long as it is a resin molded product, there is no particular limitation, and in consideration of adhesion by combination with a decorative sheet to be used, required physical properties as a decorative molded product, cost, and the like, appropriately selected from known resins. Select and use. Further, as the coloring agent for coloring the resin molded product, the various coloring agents described above for the coloring ink layer can be used.

For example, in the case of a thermoplastic resin, ABS
(Acrylonitrile-butadiene-styrene copolymer)
Resin, styrene resin, acrylic resin, vinyl chloride resin,
Polycarbonate resin, or polyethylene, polypropylene, polybutene, polymethylpentene, ethylene-
Polyolefin resins such as propylene copolymers, ethylene-propylene-butene copolymers, and olefin-based thermoplastic elastomers can be used. In the case of a curable resin, a two-part curable resin such as an uncured resin liquid such as a urethane resin, an unsaturated polyester resin, or an epoxy resin can be used. In the simultaneous decorating method of injection molding, the thermoplastic resin is heated and melted, injected into the cavity in a fluid state, and cooled and solidified. In addition, the curable resin (the uncured product) is injected at room temperature or by appropriately heating and flowing, and is crosslinked and polymerized to be solidified.

[Laminating Method of Decorated Sheet on Colored Resin Molded Product] As a method of laminating a decorative sheet on the surface of a colored resin molded product and integrating it into a decorated molded product, a simultaneous injection molding decorating method ( JP-B-50-19132, JP-B-43-2
No. 7488) is a typical example. In addition, for example, Japanese Patent Publication No. 56-45768 (overlay method) and Japanese Patent Publication No. 60-58014 (vacuum pressing method)
Other known laminating methods such as the so-called vacuum forming laminating method described in the above. Above all, the simultaneous injection molding decorating method is a preferable method in that resin molding and decorating can be simultaneously performed in one step and production efficiency is good. The lamination method may be selected according to the available manufacturing equipment and the like.

For example, in order to obtain the decorative molded article of the present invention by the simultaneous injection molding and decorating method, it is possible to obtain the decorative molded article in various modes conventionally known as the simultaneous injection molding and decorating method. The following is an explanation of an embodiment in which the decorative sheet is preformed by using the mold as a vacuum forming mold.

First, in the sheet supply step, when the decorative molding die composed of a pair of female and male female and male molds is open, the decorative sheet is supplied between the molds and the decorative sheet is supplied. The female mold is pressed and fixed with a frame-shaped sheet clamp. At this time, it goes without saying that the adhesive surface side of the decorative sheet is set to the injection resin side. Then, as a heating softening step,
A hot plate is inserted between the two molds from a retracted position outside the mold, and the decorative sheet is heated and softened. Next, as a stretching step, the decorative sheet is stretched by suction from the female air holes to form the decorative sheet, and the decorative sheet is preformed along the cavity surface of the female mold. Usually, the vacuum forming step includes at least the heat softening step and the stretching step. Next, as a mold clamping step, after the hot plate is retracted from the space between the two molds to a retracted position outside the mold, the molds are clamped. Next, as an injection step, a colored resin in a fluid state such as a heated and melted state is filled into a cavity formed by both molds. Next, as a removal step, after the resin is solidified by cooling or the like, the mold is opened and a molded product is removed. If there is an unnecessary portion of the decorative sheet, if it is trimmed appropriately, the decorative molded product of the present invention, in which the decorative sheet is laminated and integrated on the surface of the colored resin molded product and decorated, is obtained.

[0032]

The present invention will be described in more detail with reference to the following Examples and Comparative Examples.

Example 1 A decorative molded article D having the structure shown in FIG. 1 was obtained in the following manner. First, as the decorative sheet S,
An uncolored and transparent acrylic resin sheet (125 μm in thickness) made of polymethyl methacrylate was prepared as the transparent thermoplastic resin sheet 1. Then, on one surface of the transparent thermoplastic resin sheet, a pattern ink layer 3 expressing a wood grain pattern pattern by three-color printing, and a colored ink layer 2 on the entire surface.
(4 μm thickness), transparent adhesive layer 4 on the entire surface (4 μm thickness)
In this order, the decorative sheet S was formed by gravure printing. The coloring agent used in the picture ink layer was a reddish pattern, carbon black, and isoindolinone as main components. For the colored ink layer, a brown ink obtained by mixing a reddish, a graphite, and a carbon black with a colorant was used as an ink colored according to a color of an injection resin described later. The color difference between the colored ink layer and the colored resin molded product was ΔE = 10 in a color difference equation using the L ^* a ^* b ^* color system of the International Commission on Illumination (CIE). Further, as a resin of the binder of the ink of the colored ink layer and the ink of the picture ink layer, a mixed resin system of an acrylic resin and a vinyl chloride-vinyl acetate copolymer in a weight ratio of 1: 1 was used. For the transparent adhesive layer, a mixed resin system of an acrylic resin and a vinyl chloride-vinyl acetate copolymer was used.

On the other hand, the injection resin has a petal as a coloring agent,
Brown heat resistance A with mixed addition of graphite and carbon black
BS resin (95 ° C. heat resistance) was used.

Further, as the intended decorative molded product, a product for a vehicle interior panel having a width of 40 mm, a length of 400 mm, and a thickness of 3 mm was selected.

Then, by the simultaneous decoration method for injection molding,
The decorative sheet is laminated and integrated with the surface of the colored resin molded article at the same time as the molding of the colored resin molded article, and as shown in FIG.
(All layers of) were obtained, and the decorative molded article D of the present invention having a configuration in which the layer was laminated on the surface of the colored resin molded article M was obtained. In addition, the simultaneous decorating method by injection molding was performed in a mode in which the decorating sheet also used the injection mold as a vacuum mold. First, after the decorative sheet is supplied between the molds, the sheet is heated to a sheet temperature of 110 ° C. with a non-contact type hot plate to soften, and then vacuum-sucked from inside the female mold to prepare a preliminary by vacuum forming using the female mold. The decorative sheet was formed along the cavity surface shape of the female mold by molding. Then, mold temperature 70
At ℃, the colored ABS resin heated and melted at 240 ° C. was injected from the male gate. After the resin was cooled and solidified, the mold was opened to obtain a decorative molded product D in which the decorative sheet S was laminated and integrated on the surface of the colored resin molded product M.

In the decorative molded article D, the decorative sheet S was partially extended by about twice, but since the color difference between the colored resin molded article and the colored ink layer was as small as 10 in the color difference type, the decorative molded article D was not formed. The color unevenness of the product, that is, the difference between the color of the corner of the molded product having the largest elongation of the decorative sheet on the decorative molded product and the color of the peripheral portion is visually determined as a change in the color of the corner. Could not be determined. For this reason, the decorative molded product was a good product.

Example 2 In Example 1, the color difference between the colored ink layer and the colored resin molded product was adjusted by changing the composition of the coloring agent on the colored ink layer side, and ΔE was set to 28 by the color difference equation. A decorative molded article was obtained in the same manner as in Example 1 except that the decorative sheet thus used was used. As a result, similarly to Example 1, the decorative molded product was a non-defective product as the color unevenness at the corners of the molded product could not be visually discriminated.

COMPARATIVE EXAMPLE In Example 1, the color difference between the colored ink layer and the colored resin molded product was adjusted by changing the composition of the coloring agent on the colored ink layer side, and ΔE = 35 was set by the color difference equation. A decorative molded product was obtained in the same manner as in Example 1 except that the decorative sheet was used. As a result, in the decorative molded product, the color unevenness at the corners of the molded product could be visually discriminated, and the product was defective.

[0040]

According to the decorative molded article of the present invention, since the color of the colored ink layer and that of the colored resin molded article are substantially the same, the decorative sheet follows the surface shape of the colored resin molded article and is laminated and integrated. In the process of making the decorative sheet stretch, that is,
In the part where the concealment property is reduced, the color of the colored resin molded product is mixed with the color of the decorative sheet through the decorative sheet, but since the mixed colors are almost the same color, the decorative molded product is expressed. It can reduce the change in color. Further, even if the color of the colored resin molded article varies between lots or within a lot and is slightly different, the colored ink layer can cover and reduce the influence. In addition, if a pattern ink layer is provided, a pattern pattern can be expressed, and a decorative molded article having a higher design can be obtained. In addition, if a transparent adhesive layer is also provided, the adhesive layer is transparent, so that the adhesive layer does not affect the color expressed by the decorative molded article, and the adhesion between the decorative sheet and the colored resin molded article is not affected. Performance can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating one embodiment of a decorative molded product of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transparent thermoplastic resin sheet 2 Colored ink layer 3 Picture ink layer 4 Transparent adhesive layer D Decorative molded article M Colored resin molded article S Decorative sheet

Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat II (Reference) // B29L 9:00 31:58 F term (Reference) 4F100 AK01A AK01C AK25 BA03 BA04 BA05 BA10A BA10C BA25 EC18 GB90 HB31B HB31D JB16A JL10 JL10C JN01A 4F206 AB12 AD20 AD34 AG03 AH26 JA03 JB02 JB13 JB22 JB28 JF05 JM04 JN11 JQ81 4F208 AB12 AD20 AD34 AG03 AH26 MA01 MB01 MB11 MB22 MB28 MC01 MG04 MG23 MH06

Claims (3)

[Claims] 1. A decorative sheet comprising a transparent thermoplastic resin sheet and a colored ink layer formed over the entire back surface of the transparent thermoplastic resin sheet, the decorative ink sheet having the colored ink layer side on the surface of the colored resin molded product. It is laminated and integrated so as to face the colored resin molded product side, and the color difference between the colored ink layer and the colored resin molded product is L ^* a ^* b of the International Commission on Illumination.
^* Decorative molded product with a color difference of 30 or less according to the color system. 2. The decorative molded article according to claim 1, wherein
Further, a decorative molded product having a picture ink layer between the transparent thermoplastic resin sheet and the coloring ink layer. 3. The decorative molded article according to claim 1, further comprising a transparent adhesive layer between the colored ink layer and the colored resin molded article.