JP5259685B2 - Colored laminated film - Google Patents

Description

  The present invention relates to a colored laminated film used for automobile exterior parts and the like.

  For example, a laminated film used for automobile exterior parts and the like is obtained by laminating a PET film layer on an upper surface of a base film layer made of a synthetic resin material such as an olefin resin material such as polyvinyl chloride resin or polypropylene (for example, , See Patent Document 1). Such laminated films include various methods such as adding a coloring material to the base film layer, or forming a metal vapor deposition layer between the base film layer and the PET film layer by sputtering or the like in order to develop a metallic luster. A colored laminated film is formed by this method. In the colored laminated film, an olefin-based resin material is suitably used as the base film layer because of environmental or disposal problems or a request for further weight reduction of the film.

  A colored laminated film using an olefin resin material as a base film layer is a black colored olefin film by kneading a color material such as carbon into an olefin resin material when forming a black film having a texture different from metallic luster. In general, a resin film layer is formed and a transparent PET film layer is laminated on the upper surface thereof. However, with this colored laminated film, it is difficult to develop a glossy or deep color, and only a turbid black color without the glossiness peculiar to olefins was obtained.

JP 2005-324398 A

  The present invention has been made in view of the above points, and provides a black colored laminated film having a high gloss and high gloss and depth.

  That is, the invention of claim 1 is a colored laminated film including an olefin resin film layer colored in black, and a transparent PET film layer bonded to the upper surface of the olefin resin film layer via an adhesive layer; And a colored coating layer formed on the upper surface of the transparent PET film layer, in which a coloring material is kneaded in a mixing amount of 1 to 10% with respect to an acrylic resin or a urethane resin alone or a mixture thereof. According to the featured colored laminated film.

  The invention according to claim 2 relates to the colored laminated film according to claim 1, wherein the mixing amount of the coloring material is 3 to 5%.

  Invention of Claim 3 concerns on the colored laminated | multilayer film of Claim 1 or 2 whose thickness of the said colored coating-film layer is 3-100 micrometers.

  The invention according to claim 4 relates to the colored laminated film according to any one of claims 1 to 3, wherein the transparent PET film layer has a thickness of 12 to 100 μm.

  Invention of Claim 5 concerns on the colored laminated | multilayer film of any one of Claim 1 thru | or 4 which has a protective film layer on the said colored coating-film layer upper surface.

  Invention of Claim 6 concerns on the colored laminated | multilayer film of any one of Claim 1 thru | or 5 by which the primer layer or the adhesion layer is given to the back surface of the said olefin resin film layer.

  The colored laminated film according to the invention of claim 1 is a colored laminated film including an olefin resin film layer colored in black, and is transparent PET that is bonded to the upper surface of the olefin resin film layer via an adhesive layer. A film layer, and a colored coating layer formed on the upper surface of the transparent PET film layer, in which a coloring material is kneaded in an amount of 1 to 10% with respect to an acrylic resin or a urethane resin alone or a mixture thereof. Therefore, it is possible to obtain a black colored laminated film having a high glossiness and gloss and depth as compared with the prior art.

  The invention of claim 2 is that, in claim 1, since the mixing amount of the coloring material is 3 to 5%, a black colored laminated film having a more excellent color tone can be obtained.

  Invention of Claim 3 WHEREIN: Since the thickness of the said colored coating film layer is 3-100 micrometers in Claim 1 or 2, while being able to fully ensure performance, such as a weather resistance, external appearance, manufacturability, and It becomes advantageous in price.

  The invention of claim 4 is the invention of claims 1 to 3, wherein the thickness of the transparent PET film layer is 12 to 100 μm, so that performance such as durability and flexibility can be secured, and economically advantageous. It becomes.

  Since the invention of claim 5 has a protective film layer on the top surface of the colored coating layer according to claims 1 to 4, the step of bonding the colored laminated film and the processing step of the material to which the colored laminated film is stuck Alternatively, it is possible to prevent the colored laminated film from being damaged during transportation and storage.

  Since the primer layer or the adhesion layer is given to the back surface of the said olefin resin film layer in invention of Claim 6 in Claim 1 thru | or 5, the olefin resin film layer and the said colored laminated film are stuck. Adhesiveness with a resin molding can be improved.

It is a schematic sectional drawing of the coloring laminated film which concerns on one Example of this invention.

  A colored laminated film 10 according to an embodiment of the present invention shown in FIG. 1 includes an olefin resin film layer 11 colored in black, and includes a transparent PET film layer 20 and a colored coating film layer 30. Have. In the figure, a symbol M is a resin molded body made of an automotive exterior part such as an automotive molding formed of a resin such as PC, ABS, PVC, PP or the like.

  The olefin-based resin film layer 11 is attached to the surface of the resin molded body M, and a known olefin-based resin such as polypropylene (PP), polyethylene (PE), and thermoplastic olefin (TPO) is coated with a pigment such as carbon. In addition, a black coloring material composed of a dye, a colorant, or the like alone or a mixture thereof is kneaded. In the olefin-based resin film layer 11, heat resistance, water resistance, and the like are required as required performance. Therefore, a heat-resistant stabilizer may be included, and a known ultraviolet absorber is used to improve weather resistance. It may be added.

  The thickness of the olefin resin film layer 11 is selected depending on the material of the resin molding M, and is preferably, for example, 30 to 500 μm, particularly 50 to 300 μm. If the thickness is less than 30 μm, the adhesion performance cannot be satisfied, and if it exceeds 500 μm, it is disadvantageous from the viewpoint of production and cost.

  Moreover, in the olefin resin film layer 11, you may give the primer layer 40 to the back surface by a well-known primer process as needed. Thereby, the adhesiveness of the olefin resin film layer 11 and the resin molding M can be improved. In addition, it is also possible to give the adhesion layer 45 to the back surface of the olefin resin film layer 11 by a known adhesion treatment instead of the primer layer 40.

  The transparent PET film layer 20 is bonded to the upper surface of the olefin-based resin film layer 11 via an adhesive layer 25. As thickness of a transparent PET film layer, 12-100 micrometers, especially 25-75 micrometers are more preferable. When the thickness is less than 12 μm, performance such as durability is insufficient, and when the thickness is more than 100 μm, there is a problem from the viewpoint of flexibility and cost.

  The adhesive layer 25 is formed by applying a two-component curable polyurethane adhesive or the like to the upper surface of the olefin resin film layer 11 with a known dry laminator or the like. As thickness of the adhesive bond layer 25, 1-25 micrometers, especially 5-15 micrometers are more preferable. When the thickness is less than 1 μm, satisfactory adhesive strength cannot be obtained, and when the thickness is more than 25 μm, it is disadvantageous from the viewpoint of manufacturing and cost.

  The colored coating layer 30 is for imparting gloss to the colored laminated film 10, and is formed on the upper surface of the transparent PET film layer 20 by a known method such as a gravure roll coating method. The colored coating layer 30 is formed by kneading a coloring material in an amount of 1 to 10% with respect to an acrylic resin or a urethane resin alone or a mixture thereof. As the coloring material, a pigment, a dye, a colorant or the like alone or a mixture thereof is appropriately used, and dark color coloring materials such as black, amber, and brown are particularly preferable. When the mixing amount of the coloring material is smaller than 1%, the color of the colored coating layer 30 is thin and a sufficient glossiness cannot be imparted. When the mixing amount is greater than 10%, the color of the colored coating layer 30 is dark and the glossiness is impaired. In particular, in order to give a more excellent gloss feeling, the mixing amount of the coloring material is preferably 3 to 5%.

  The thickness of the colored coating layer 30 is preferably 3 to 100 μm, more preferably 10 to 30 μm, in order to obtain the desired glossiness and ensure weather resistance. When the thickness is less than 3 μm, it is difficult to sufficiently ensure performance such as weather resistance. On the other hand, when the thickness is greater than 100 μm, there is a problem from the viewpoint of appearance, manufacturing, and price.

  Moreover, in the said colored laminated film 10, it is preferable to have the protective film layer 50 on the colored coating-film layer 30 upper surface. The protective film layer 50 is a step of laminating the film to the resin molded body M on which the colored laminated film 10 is adhered or coated, and a processing step of the material to which the film is adhered, or during transportation and storage. The film is prevented from being damaged. As a material of the protective film layer 50, a PET resin or the like can be used. In addition, since the protective film layer 50 is bonded as it is after the colored coating layer 30 is formed by the gravure roll coating method or the like, it is easy to laminate the colored coating layer 30 without using an adhesive. And it can form easily. The thickness of the protective film layer 50 is 9 to 100 μm, more preferably 12 to 75 μm. When the thickness of the protective film layer 50 is less than 9 μm, the protective performance cannot be satisfied, and when it is thicker than 100 μm, there is a problem from the viewpoint of cost. The protective film layer 50 is a protective part and is finally peeled off.

  Furthermore, in this colored laminated film 10, it is preferable that the pencil hardness of the entire film is HB to 2H from the viewpoint of preventing scratches on the surface and molding flexibility. When the pencil hardness is lower than HB, it is difficult to sufficiently prevent the surface from being scratched. When the pencil hardness is higher than 2H, there is a problem that molding flexibility is impaired.

  Next, specific examples of the colored laminated film of the present invention will be described. In the following examples, the upper surface of an olefin resin film layer formed by kneading carbon into polypropylene and having a thickness of 150 μm is thickened via an adhesive layer having a thickness of 12 μm using a two-component curable polyurethane adhesive. Using a transparent PET film layer having a thickness of 50 μm, a colored coating layer formed to a thickness of 12 μm without kneading or adding a coloring material of black, straw, or brown to a thermosetting acrylic resin, and using a PET resin A protective film layer having a thickness of 50 μm was laminated to obtain prototype examples 1 to 22.

  Trial Example 1 has a black pigment mixing amount of 0.5%, Trial Example 2 has a black pigment mixing amount of 1.0%, Trial Example 3 has a black pigment mixing amount of 3.0%, and Trial Example 4 has black color. The mixing amount of the pigment is 4.0%, the mixing amount of the black pigment is 5.0% in the trial example 5, the mixing amount of the black pigment is 10.0% in the manufacturing example 6, and the mixing amount of the black pigment is the manufacturing example 7 12.0%. Prototype Example 8 has an amber pigment mixing amount of 0.5%, Prototype Example 9 has an amber pigment mixing amount of 1.0%, and Prototype Example 10 has an amber pigment mixing amount of 3.0%. The mixing amount of the amber pigment is 4.0%, the trial example 12 is the mixing amount of the amber pigment 5.0%, the trial example 13 is the mixing amount of the amber pigment 10.0%, and the trial example 14 is the mixing of the amber pigment. The amount is 12.0%. In addition, the trial example 15 has a brown pigment mixing amount of 0.5%, the trial example 16 has a brown pigment mixing amount of 1.0%, the trial example 7 has a brown pigment mixing amount of 3.0%, and the trial example 18 The mixing amount of brown pigment is 4.0%, the mixing amount of Prototype 19 is 5.0%, the mixing amount of Probing Example 20 is 10.0%, and the mixing amount of Probing Example 21 is mixing of brown pigment. The amount is 12.0%. The prototype 22 does not include a coloring material.

Therefore, for prototypes 1 to 22, the 60-degree gloss value was measured in accordance with JIS-Z-8741, and the color tone of gloss, depth, and gloss was visually evaluated comprehensively. In addition, Nippon Denshoku Industries Co., Ltd. PG-1 was used as a measuring instrument.
◎ ・ ・ ・ Excellent ○ ・ ・ ・ Good △ ・ ・ ・ Slightly inferior × ・ ・ ・ Inferior

  For Prototype Example 1, the gloss value was 70. For Prototype Example 2, the gloss value was 80. For Prototype Example 3, the gloss value was 88. For Prototype Example 4, the gloss value was 90. For Prototype Example 5, the gloss value was 88. For Prototype Example 6, the gloss value was 83. For Prototype Example 7, the gloss value was 73. For Prototype Example 8, the gloss value was 68. For Prototype Example 9, the gloss value was 80. For Prototype Example 10, the gloss value was 86. For Prototype Example 11, the gloss value was 88. For Prototype Example 12, the gloss value was 86. For Prototype Example 13, the gloss value was 82. For Prototype Example 14, the gloss value was 70. For Prototype Example 15, the gloss value was 68. For Prototype Example 16, the gloss value was 80. For Prototype Example 17, the gloss value was 86. For Prototype Example 18, the gloss value was 88. For Prototype Example 19, the gloss value was 86. For Prototype Example 20, the gloss value was 82. For Prototype Example 21, the gloss value was 70. For Prototype Example 22, the gloss value was 65.

  As shown in the results of Table 1, in Prototype Examples 2-6, 9-13, and 16-20, the gloss, depth, and glossiness were all good. In particular, in Trial Examples 3 to 5, 10 to 12, and 17 to 19, excellent films having higher gloss and gloss and depth were obtained. On the other hand, in Examples 1, 7, 8, 14, 15, and 21, only films with slightly inferior gloss, depth, and gloss were obtained. Furthermore, in Prototype Example 22, only a turbid black film with insufficient gloss and depth and no gloss was obtained. As understood from these results, it was found that when the mixing amount of the coloring material is 1 to 10%, the gloss value is 80 or more, and the glossiness is high and good evaluation with gloss and depth is obtained. . In particular, it was found that when the mixing amount of the coloring material was 3 to 5%, the gloss value was 86 or more, and a more excellent evaluation was obtained.

  As shown and described above, in the colored laminated film of the present invention, the transparent PET film layer on the upper surface of the black colored olefin resin film layer and the acrylic resin or urethane resin alone or a mixture thereof In addition, a colored coating layer formed by kneading the coloring material at a mixing amount of 1 to 10% is laminated, so that the glossiness is high and glossy compared to a turbid black film having no glossiness characteristic of conventional olefins. A deep black (jet black tone) colored laminated film can be obtained. In particular, if the mixing amount of the coloring material is 3 to 5%, a black film having a more excellent color tone can be obtained.

  In addition, the colored laminated film of this invention is not limited only to the above-mentioned Example, A part of structure can be changed suitably and implemented in the range which does not deviate from the meaning of invention.

DESCRIPTION OF SYMBOLS 10 Colored laminated film 11 Olefin-based resin film layer 20 Transparent PET film layer 25 Adhesive layer 30 Colored coating layer 40 Primer layer 50 Protective film layer M Resin molded body

Claims (6)

A colored laminated film including an olefin-based resin film layer colored in black,
A transparent PET film layer bonded to the upper surface of the olefin-based resin film layer via an adhesive layer;
It is formed on the upper surface of the transparent PET film layer, and has a colored coating film layer in which a coloring material is kneaded in a mixing amount of 1 to 10% with respect to an acrylic resin or a urethane resin alone or a mixture thereof. Colored laminated film.   The colored laminated film according to claim 1, wherein a mixing amount of the coloring material is 3 to 5%.   The colored laminated film according to claim 1 or 2, wherein the colored coating layer has a thickness of 3 to 100 µm.   The colored laminated film according to any one of claims 1 to 3, wherein the transparent PET film layer has a thickness of 12 to 100 µm.   The colored laminated film according to claim 1, further comprising a protective film layer on an upper surface of the colored coating layer.   The colored laminated film according to any one of claims 1 to 5, wherein a primer layer or an adhesive layer is provided on the back surface of the olefin-based resin film layer.

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