JP2012011650A - Laminated product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laminated product having deep tasteful feeling and capable of being efficiently manufactured with high flexibility of freedom of the shape.SOLUTION: The laminated product 1 is formed by laminating a UV curing resin on surface uneven parts on the surface of a plastic injection molding 2 having various functional shapes on the back surface and giving the UV curing resin a shape having a surface unevenness defined differently from the definition of the surface unevenness of the plastic injection molding 2. Then the laminated product 1 is formed to give arbitrary unevenness to the laminate surface by laminating the UV curing resin having a desired shape and surface performance additionally on the arbitrary plastic injection molding 2 which is already mass-produced.

Description

  The present invention relates to a laminated product used for vehicles, furniture, mobile phones, personal computers, and other various home appliances.

In recent years, attempts have been made to improve design, luxury, and quality by using a method in which a hologram is pre-formed on a sheet that is inserted into a mold, and the various colors combined are changed according to the viewing angle and light conditions. It has been broken.
Regarding this insert molding method, Patent Document 1 discloses a molded article with a base material obtained by injection-filling a molten resin by inserting a base material into a mold and integrating the base material and the resin. . The base material is a light-transmitting main body layer, a heat-resistant backup layer that is integrated with the resin so as to face the main body layer, and irregularities for light diffraction that are interposed between the main body layer and the backup layer. And a hologram decoration layer that is variable depending on the viewing angle and the light state.

JP 2006-240213 A

  In the molded article with a base material disclosed in Patent Document 1, the hologram decoration layer on which irregularities for light diffraction are simply formed lacks a natural depth in the pattern, and the degree of freedom in expression is poor. Therefore, even if the molded article with a base material disclosed in Patent Document 1 is used as, for example, a laminated product for a cover of a personal computer, it is a laminated product that can respond to various hobbies and tastes and can be varied and natural and diverse. It cannot be a product.

  In view of the above problems in the prior art, an object of the present invention is to provide a laminated product that has a tasteful taste and can be efficiently manufactured with a high degree of freedom in shape.

  In order to achieve the above object, the laminated product of the present invention is formed by laminating a UV curable resin on a plastic injection molded product having an arbitrarily defined uneven surface, colored and opaque, and having a functional shape on the back surface. The surface of the resin has a shape with a definition different from the definition of the surface irregularity of the plastic molded product.

  Furthermore, in order to achieve the above object, the laminated product of the present invention is formed by laminating a UV curable resin on a plastic injection molded product having an arbitrarily defined uneven surface, colored and opaque, and having a functional shape on the back surface. The surface of the cured resin is characterized by having a separately defined shape irrespective of the definition of the surface irregularity of the plastic molded product.

  The unevenness of the surface of the plastic molded product can be created by 1 / f fluctuation or embossing.

  The thickness of the UV curable resin layer is preferably t = 10 μm to 5 mm.

  At least one of a decorative layer, an adhesive layer, and a hard coat layer is provided on the surface of the UV curable resin layer that is in contact with the plastic molded product and / or on the surface opposite to the surface of the UV curable resin layer that is in contact with the plastic molded product. Can have.

  According to the laminated product of the present invention, a UV curable resin is laminated on a plastic injection molded article having an arbitrarily defined uneven surface, and the surface of the UV curable resin has a definition different from the definition of the surface unevenness of the plastic molded article. Therefore, it is possible to efficiently produce a laminated product having a tasteful taste obtained by cloisonne ware with a high degree of freedom in shape.

1 is a schematic cross-sectional view of a laminated product according to a first embodiment of the present invention. It is a photograph which shows the external appearance of the plastic injection molded product in the laminated product of 1st embodiment. It is a cross-sectional schematic diagram of the laminated product in 2nd embodiment of this invention. It is a cross-sectional schematic diagram of the laminated product of 3rd embodiment of this invention. (A) The perspective view which shows the laminated product of 4th embodiment of this invention, (b) The perspective view which shows the laminated product of another aspect.

(First embodiment)
Next, the laminated product 1 according to the first embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 1, a laminated product 1 according to the first embodiment is formed by laminating a UV curable resin layer 3 on a plastic injection molded product 2.
The plastic injection molded product 2 constituting the laminated product 1 of the present invention has an arbitrarily defined uneven surface.
For example, functional shapes such as ribs, claw shapes 4 and boss shapes 5 can be directly formed on the back surface opposite to the surface to be visually recognized. Therefore, the plastic injection molded product 2 is formed as a product (for example, a personal computer cover) as it is. In that respect, it is completely different from the thermoplastic sheet. In the case of a thermoplastic sheet, there is an advantage that it can be laminated and decorated with various materials, but on the other hand, it is a sheet, because it is thin, not strong, and cannot have a functional shape, etc. Then it is not established as a product.
In the laminated product 1 of the present invention, a UV curable resin is laminated on the surface uneven portion of the colored opaque plastic injection molded product 2 having such various functional shapes on the back surface, and the plastic injection molded product 2 surface unevenness is defined on the UV curable resin. It is given a separately defined shape regardless of the.

  Therefore, the laminated product 1 is formed by laminating an arbitrary plastic injection molded product 2 that has already been mass-produced with an additional UV curable resin having a required shape and surface properties, and providing the laminated surface with arbitrary irregularities. be able to. That is, the surface 6 of the UV curable resin layer 3 is a surface unrelated to the surface irregularity of the surface of the injection molded product 2. The thickness t of the UV curable resin layer 3 of the laminated product 1 is 10 μm to 5 mm.

When the UV curable resin layer 3 is a glass layer, a high temperature of about 1000 ° C. is necessary to melt the glass, and it cannot be laminated on the plastic injection molded product 2. When a transparent material such as a plastic (acrylic, polycarbonate) sheet is used, such a sheet follows the unevenness of the plastic injection molded product 2 with an offset, and has a surface unrelated to the surface shape of the surface unevenness of the injection molded product 2. Can't get. The same applies to other various coatings.
On the other hand, since the UV curable resin is cured by UV irradiation, there is little influence of heat on the plastic injection molded product 2 during production, and the fluidity and followability are good. It is possible to cope with the unevenness difference of several millimeters of the plastic injection molded product 2 and to obtain a surface unrelated to the surface irregularity of the surface of the injection molded product 2.

  When the thickness of the UV curable resin layer 3 is less than 10 μm, it is impossible to obtain a practical strength that can be efficiently produced in an industrial production process. When the thickness of the UV curable resin layer 3 exceeds 5 mm, for example, when used as a PC cover, the disadvantage of increasing the weight is greater than the benefit of improving the strength.

  In the laminated product 1 according to the first embodiment, the boundary surface 7 between the plastic injection molded product 2 and the UV curable resin layer 3 is a portion having a large thickness and a portion having a small thickness in the range of 10 to 250 μm. The thickness is changed so as to have Further, by giving 1 / f fluctuation to the change in the thickness of the boundary surface 7, light and darkness that randomly changes in luminance due to light reflection is generated. That is, the change in thickness of the boundary surface 7 is determined by the 1 / f fluctuation function f (x) shown in Equation 1.

Note that the thickness change of the boundary surface 7 and the fluctuation surface using the 1 / f wave of the thickness change do not necessarily need to be formed on the entire surface of one side of the boundary surface 7, but may be formed on a required part thereof. It can also be.

  On the other hand, the surface 6 of the UV curable resin layer 3 has a shape that is defined separately regardless of the definition of the surface irregularity that is a fluctuation surface using the 1 / f wave of the boundary surface 7. In the laminated product 1 according to the first embodiment, the central portion is flat, and both outer sides thereof are curved surfaces. Therefore, the definition is completely different from the definition of the surface shape of the boundary surface 7.

  According to the plastic injection molded product 2 of the laminated product 1 of the above embodiment, the direction of incident light with respect to the surface 6 of the UV curable resin layer 3 or the viewpoint with respect to the surface 6 of the UV curable resin layer 3 is relatively changed. Thus, it is possible to generate an irregularly changing light / dark pattern similar to the day of a tree leak in the generated reflection luminance. Therefore, the light decoration which is rich in the appearance of the laminated product 1 can be realized.

  And the panel, cover, etc. which are the plastic injection molded articles 2 used as the object which laminate | stacks the UV curable resin layer 3 are not specifically limited. For example, plastic injection molded products 2 can be used for information equipment (notebook computers, personal computers, mobile phones, smartphones, etc.), home appliances (refrigerators, washing machines, air conditioners, etc.), automobile interior parts (center panels, door moldings, etc.), and AV It can be any device (TV, DVD / HDD deck, etc.). The laminated product 1 has high versatility and can reduce the cost due to the mass production effect.

2A to 2C are photographs obtained by photographing the plastic injection molded product 2 of the laminated product 1 of the present embodiment described above from the surface 6 side of the UV curable resin layer 3.
As shown in this photograph, the reflected light from the boundary surface 7 gives rise to an irregularly changing light-dark pattern similar to the sunbeams with wavy changes.

(Second embodiment)
Next, the laminated product of the second embodiment of the present invention will be described with reference to FIG.
In the second embodiment, the surface 6 of the UV curable resin layer 3 of the laminated product 1 is processed into a prism shape 8. The second embodiment is different from the first embodiment in that point, and the other is the same.

(Third embodiment)
Next, a third embodiment of the laminated product according to the present invention will be described with reference to FIG. The laminated product 1 of the third embodiment has a decorative layer 9, a film layer (PMMA resin, PC resin, ABS resin, PET resin, etc.) 10 and a hard coat layer 11 on the surface 6 of the UV curable resin layer 3. Laminated and integrated. The third embodiment is different from the first embodiment in that point, and the other is the same.

In the first to third embodiments described above, the surface properties due to 1 / f fluctuation change are imparted to the plastic injection molded product 2. However, the surface property of the plastic injection molded product 2 constituting the laminated product 1 according to the present invention is not limited thereto, and the unevenness on the surface of the plastic injection molded product 2 may be created by embossing.
Examples of the texture formed by the texture processing include a leather pattern, wood grain, rock texture, sand texture, plain fabric, and geometric pattern (Texturing, Graining, Engraving, etc.). The texture can be improved by giving such a texture, "modern pattern" that is unobtrusive for home appliances and OA products, and "texturized leather" that is a texture for actively showing cars and housing equipment. "Pattern", "Geometric pattern", "Iwate", "Wood" etc. can be given.

The laminated product 1 of the present invention can be formed by laminating a UV curable resin layer 3 on a plastic injection molded product 2 provided with such a texture. In this case, the surface 6 of the UV curable resin layer 3 has a planar shape which is a separately defined shape irrespective of the definition of the surface irregularities having the texture of the plastic injection molded product 2, and the surface shape of the plastic injection molded product 2. The shape of the definition is different from the definition of.

  In the first to third embodiments described above, the surface 6 of the UV curable resin layer 3 is a planar shape that is defined independently of the definition of the surface irregularities of the plastic injection molded product 2. However, the surface texture is not necessarily flat. That is, the surface properties of the UV curable resin layer 3 are information devices (notebook computers, personal computers, mobile phones, smartphones, etc.), home appliances (refrigerators, washing machines, air conditioners, etc.) or automotive interior parts (center panels, door moldings, etc.), Can be made to have surface properties corresponding to the functions of panels, covers, etc., as members of AV equipment (TV, DVD / HDD deck, etc.), irrespective of the definition of surface irregularities of the surface shape of the plastic injection molded product 2 It can be a separately defined shape.

(Fourth embodiment)
Next, a laminated product 1 according to a fourth embodiment of the present invention will be described with reference to FIG.
The laminated product 1 of the fourth embodiment shows a case where it is applied to the cover 13 of the PC 12 as shown in FIG. As shown in FIG. 5B, the laminated product 1 of the present invention can be applied as a cover 15 of the touch pad PC14.

DESCRIPTION OF SYMBOLS 1 ... Laminated product, 2 ... Plastic injection molded article, 3 ... UV cured resin layer, 6 ... Surface, 7 ... Boundary surface.

Claims (5)

The surface of the UV curable resin is different from the definition of the surface unevenness of the plastic molded product. Laminated product characterized by having a defined shape. The surface of UV curable resin is related to the definition of surface irregularities of plastic molded products. A laminated product characterized by having a separately defined shape. The laminated product according to claim 1 or 2, wherein the unevenness of the surface of the plastic molded product is formed by 1 / f fluctuation or grain. The laminated product according to any one of claims 1 to 3, wherein a thickness t of the UV curable resin layer is t = 10 µm to 5 mm. At least one of a decorative layer, an adhesive layer, and a hard coat layer is provided on the surface of the UV curable resin layer that is in contact with the plastic molded product and / or on the surface opposite to the surface of the UV curable resin layer that is in contact with the plastic molded product. The laminated product according to any one of claims 1 to 4, wherein the laminate product is provided.