JP2010052290A - Decorative molding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an excellent decorative molding having metallic glossiness on the surface with high quality feeling, preventing conspicuous stain of fingerprint by use, and keeping beautiful appearance over a long period. <P>SOLUTION: The decorative molding is provided with a metallic glossy layer 3 and a transparent coating layer 4 on the surface of the molding 5 in this order. The transparent coating layer 4 is formed by a transparent resin-cured body containing 4 wt.% of pearl pigment particles 8 with an average particle size of 7 μm. The surface of the decorative molding has the metallic glossiness S formed by superposition of the metallic glossiness derived from the metallic glossy layer 3 and the pearl glossiness derived from the pearl pigment particles 8. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  In the present invention, a metallic luster layer and a transparent coating layer are provided in this order on the surface of the molded body, and the transparent coating layer contains 2 to 6% by weight of glittering fine particles having an average particle size of 0.2 to 60 μm. The present invention relates to a decorative molded body which is formed by a transparent resin cured body to be contained and has a metallic luster on its surface.

Compact containers, lipstick containers, and the like that contain cosmetics are required not only to have functionality and durability, but also to have good design and design that reflects the product image. As a technology that meets such demands, for example, a container in which at least a part of the surface is formed of a transparent resin molded body, a thin film layer is formed on the surface via a colored adhesive layer, and a thin film on the surface A technique is disclosed in which a part of the layer is removed by laser irradiation to expose a colored adhesive layer to form a color pattern on the surface (see Patent Document 1). According to this technique, it is possible to provide a container provided with a surface pattern that efficiently maintains a beautiful appearance.
JP 2007-216417 A

  However, as in Patent Document 1 above, in a container having a thin film layer formed on the surface, when the thin film layer is formed by metal vapor deposition or the like and has a metallic luster, a sense of quality is produced on the molded body. On the other hand, when the oil and fat in a human hand adheres as fingerprint stains, the fingerprint stains more conspicuous than a container having no metallic luster. In particular, since many cosmetics contain oils and fats, containers containing the cosmetics are in an environment where fingerprint stains are likely to adhere. Therefore, the container containing cosmetics with metallic luster on the above surface has a high-class feeling when it is new and looks good. There is a problem that it looks bad. The fingerprint stain does not fall off just by wiping, but remains after rubbing. In order to clean this, a work such as washing with a detergent is required. However, it is troublesome to perform this work every time dirt is attached after the cosmetic is used. For this reason, the fingerprint stains remain indefinitely, and there is a problem that the purchaser is forced to use a poor-looking container that is far from the beautiful image of cosmetics.

  The present invention has been made in view of such circumstances, and even if it is a molded article having a metallic luster on the surface and a high-class feeling, fingerprint stains due to use are less noticeable, and a beautiful appearance before use is achieved. The purpose is to provide an excellent decorative molded body that can be maintained over a long period of time.

  In order to achieve the above object, the present invention provides a decorative molded body in which a metallic luster layer and a transparent coat layer are provided in this order on the surface of the molded body, and the transparent coat layer has an average A decorative molded body formed of a transparent resin cured body containing 2 to 6% by weight of glittering fine particles having a particle diameter of 0.2 to 60 μm is a first gist.

  In the decorative molded body according to the first aspect of the present invention, the transparent coating layer is formed of a transparent resin cured body containing 2 to 6% by weight of pearl pigment particles having an average particle diameter of 1.0 to 60 μm. The decorated molded body is a second gist.

  Furthermore, the present invention provides the decorative molded body according to the first aspect, wherein the transparent coating layer is formed of a transparent resin cured body containing 2 to 4% by weight of titanium oxide particles having an average particle diameter of 0.2 to 1.0 μm. The decorated decorative body that is used is the third gist.

  The present invention is a decorative molded body in which a metallic gloss layer and a transparent coating layer are provided in this order on the surface of the molded body, and the transparent coating layer has an average particle size of 0.2 to 60 μm. It is a decorative molded body formed of a transparent resin cured body containing 2 to 6% by weight of glittering fine particles. According to this configuration, it is possible to make the fingerprint stain due to human hands less noticeable while leaving the metallic luster on the surface. Therefore, even after repeated use, the attached fingerprint stains are not noticeable, and the high-grade appearance due to metallic luster is not impaired.

  And since fingerprint stains are less noticeable, even if fingerprint stains adhere to the surface, they can continue to be used with a beautiful impression without washing with a detergent, and no complicated care is required.

  In addition, since the above effect can be obtained by making the transparent coating layer a transparent resin cured body containing a specific amount of glittering fine particles having a specific average particle diameter, a new apparatus or special material is introduced. There is no need to manufacture. Therefore, it is possible to use devices and materials conventionally used for production as they are, and it is possible to obtain a beautiful decorative molded body with a metallic luster imparted to the surface easily at low cost.

  And, among the present invention, in particular, the transparent coating layer is formed by a transparent resin cured body containing 2 to 6% by weight of pearl pigment particles having an average particle diameter of 1.0 to 60 μm. A good balance between the appearance of metallic luster and the effect of making fingerprints less noticeable, and the pearl pigment is non-toxic and chemically and mechanically stable, so it is safe and durable. The body can be manufactured.

  Further, in the present invention, in particular, the transparent coat layer is formed of a transparent resin cured body containing 2 to 4% by weight of titanium oxide particles having an average particle diameter of 0.2 to 1.0 μm. Has a good balance between the appearance of metallic luster and the effect of making fingerprint smudges inconspicuous, and titanium oxide has a high refractive index and can adjust the particle size distribution ideally, so it can be added in small amounts. The above effects can be exhibited.

  Next, the best mode for carrying out the present invention will be described. However, the present invention is not limited to this embodiment.

  FIG. 1 is a perspective view of a compact container which is the best mode for carrying out the present invention. In the figure, 1 is a main body portion, 2 is a lid, and this lid 2 has a structure in which a metallic gloss layer 3 and a transparent coat layer 4 are laminated in this order on a molded body as a base. A metallic luster S is given to the surface. And, the rear end portion of the lid body 2 has a hinge portion protruding downward (not shown), and this hinge portion engages with the rear end portion of the main body portion 1, The lid 2 opens upward.

  More specifically, the lid 2 has a thickness of 0.04 μm on the surface of a molded body 5 made of polyethylene terephthalate (hereinafter referred to as “PET”) resin, as shown in a partial sectional view in FIG. The metallic luster layer 3 made of aluminum vapor deposition is laminated via an undercoat layer 6 made of acrylic resin, and further, an acrylic resin containing 4% by weight of pearl pigment particles 8 having an average particle diameter of 7 μm is further formed thereon. A transparent coat layer 4 having a thickness of 7 μm and a transparent top coat layer 7 made of an acrylic resin are laminated in this order. Thereby, the metallic luster S formed by overlapping the metallic luster derived from the aluminum metal and the pearl luster derived from the pearl pigment particles through the transparent two layers (4, 7) is formed on the surface of the lid 2. Appears. In addition, in FIG. 2, the cross section of each said layer is typical, and it differs from actual thickness (the same also in the following figures).

  The lid 2 can be obtained, for example, as follows.

  First, a mold for shaping the molded body 5 serving as the base of the lid 2 was prepared, and a predetermined shape was given by injection molding a transparent PET resin material that is a forming material of the molded body 5 The molded body 5 can be obtained.

  Next, an undercoat agent is applied to the entire surface of the molded body 5 to form an undercoat layer 6, and a metallic luster layer 3 having a metallic luster is formed thereon by aluminum deposition.

  Then, an acrylic resin transparent coating agent prepared separately from this and blended with pearl pigment particles 8 is applied onto the metallic luster layer 3 and cured to form the transparent coating layer 4. Thereafter, a top coat agent is applied on the transparent coat layer 4 to form a top coat layer 7, whereby the entire upper surface of the molded body 5 is interposed via the undercoat layer 6 as shown in FIG. 2. The lid 2 in which the metallic gloss layer 3 is formed and the transparent coat layer 4 and the top coat layer 7 are further laminated in this order can be obtained. The main body 1 is also provided with a metallic luster S on the surface in the same manner as the lid 2 by the same manufacturing method, and has a high-quality and beautiful appearance as a whole.

  According to this configuration, the transparent coat layer 4 in which the pearl pigment particles 8 are blended overlaps the metallic luster layer 3 having a metallic luster caused by aluminum deposition, so that the appearance of the main body 1 and the lid 2 can be seen. The metallic luster S becomes a special metallic luster S obtained by overlapping the metallic luster of the metallic luster layer 3 and the pearl luster of the pearl pigment particles 8 contained in the transparent coat layer 4. The metallic luster S remains on the surface because fingerprint stains are not noticeable due to the pearl luster of the pearl pigment particles 8 contained in the transparent coating layer 4 while leaving the metallic luster derived from aluminum deposition of the metallic luster layer 3. The compact container composed of the part 1 and the lid 2 has a beautiful metallic luster with a high-class feeling, but the fingerprint stains are hardly noticeable.

  Therefore, even if it is used repeatedly, the attached fingerprint stains are not noticeable, and it can be used with a beautiful impression without impairing the high-quality appearance. For this reason, it is not necessary to perform operations such as washing with detergent, and complicated care is not required.

  And since the metallic luster layer 3 is formed through the undercoat layer 6, the adhesiveness of the metallic luster layer 3 to the molded body 5 can be further improved, and the life of the molded article can be extended. . Further, since the top coat layer 7 is formed on the transparent coat layer 4, fine irregularities resulting from the blending of the pearl pigment particles 8 on the surface of the transparent coat layer 4 are covered by the top coat layer 7, and the lid The surface of the body 2 becomes smooth. The top coat layer 7 can also be expected to prevent the pearl pigment particles 8 in the transparent coat layer 4 from falling off. Further, the top cover 2 is protected from scratches and ultraviolet light, and its beautiful appearance is further improved. Can keep long.

  In the above example, the metallic luster layer 3 uses an aluminum vapor deposition layer, but is not limited to this, and any metallic luster may be used as long as it has a metallic luster and has been conventionally used for decoration of molded articles. Can be used. For example, in addition to a metal vapor deposition layer, various types of metal luster such as a metal vapor deposition film (sheet), a hologram sheet, a metal foil, and a paint coating film can be used. And the formation method employ | adopts an appropriate method according to the materials, such as vapor deposition, sputtering, plating, a hot stamp, coating. Further, if the metallic gloss layer 3 reflects light, the color tone may be a color obtained by adding a color such as pink or blue to these metallic gloss colors in addition to general silver and gold. . Thus, by selecting the color tone of the metallic luster layer 3, a more interesting design can be realized.

  In the above example, the transparent coat layer 4 uses an acrylic resin as the resin component, but instead uses another resin that is transparent when it becomes a cured body. May be. These must be transparent in order to show through the metallic luster layer 3 which is the lower layer, but they need not be colorless. Even if they are slightly colored, they are colored if the opposite side can be seen through. May be. In this case, the combination of the color tone of the metallic luster layer 3, the transparent coat layer 4, and the pearl pigment particles 8 contained in the transparent coat layer 4 further expands the design of the decorative molded body and the selection of the color tone. .

  And in said example, although the pearl pigment particle | grains 8 are used as the glittering fine particle mix | blended with the transparent coat layer 4, instead of this, particles, such as a titanium oxide, a talc, mica (mica), and zinc oxide, are used. Can be used. At this time, when titanium oxide is used, the size of the average particle diameter can be set easily and arbitrarily, so that the blending can be easily adjusted. In addition, since titanium oxide has a high refractive index and reflectance, a desired effect can be obtained with a small amount of addition. As for talc, mica (mica), and zinc oxide, the brightness of the particles is different, so by selecting these materials appropriately or by combining two or more types, the metallic luster of the metallic luster layer 3 can be superimposed. In this case, a desired metallic luster S having an effect that fingerprint smear is not noticeable can be obtained without impairing the metallic luster.

  Moreover, in said example, although the average particle diameter of the pearl pigment particle 8 which is glittering fine particle is 7 micrometers, it can set suitably between 0.2-60 micrometers not only this. Here, the reason why the average particle diameter of the glittering fine particles is set to the above-mentioned value is less than 0.2 μm, the transparent coating layer 4 containing this becomes difficult to transmit light. It is because it becomes difficult to appear on the surface of the decorative molded body. On the other hand, if the thickness exceeds 60 μm, clogging is likely to occur during painting using a spray gun or the like, which may hinder the production of a decorative molded body.

  In the present invention, the average particle diameter can be measured using, for example, a laser diffraction / scattering particle size distribution analyzer. The particle diameter is a value derived using the above measuring device using a sample arbitrarily extracted from the population.

  Furthermore, in the above example, the content of the pearl pigment particles 8 which are the glittering fine particles of the transparent coat layer 4 is 4% by weight, but is not limited thereto, and the content of the glittering fine particles is 2 to 6% by weight. % Can be set appropriately. Here, the content of the glittering fine particles is set to the above value. If the content is less than 2% by weight, there is no problem in displaying the metallic luster of the metallic luster layer 3 on the surface of the decorative molded body. It is not possible to obtain the effect that becomes inconspicuous. On the other hand, if it exceeds 6% by weight, the effect that fingerprint smudges are not noticeable can be obtained, but the transparency of the transparent coating layer 4 containing this is lowered, making it difficult to transmit light. This is because metallic luster loses its luster as luster. The content of the glittering fine particles contained in the transparent coating layer 4 is expressed in% with respect to the total weight (excluding volatile components) of the transparent resin composition before curing, and usually the transparent resin after curing. Even in the cured body, the same value is obtained.

  And when using pearl pigment particle | grains as a glittering fine particle for the said transparent coat layer 4, a thing with an average particle diameter of 1.0-60 micrometers is with respect to the whole transparent resin composition of the transparent coat layer 4. And preferably 2 to 6% by weight. The reason why the average particle size is in the above range is that if the average particle size is too small, pearly luster will hardly appear on the surface of the particles, and the effect of using pearl pigment particles may not be obtained. On the other hand, if it is too large, clogging tends to occur during painting using a spray gun or the like. Further, if the content is within the above range, if it is too small, it is impossible to obtain the effect that fingerprint smear becomes inconspicuous. On the other hand, if it is too large, the transparency of the transparent coating layer 4 is lowered and metallic gloss This is because the metallic luster of layer 3 loses its luster as luster.

  When titanium oxide particles are used as the glittering fine particles in the transparent coat layer 4, those having an average particle size of 0.2 to 1.0 μm are used as the whole transparent resin composition of the transparent coat layer 4. The content is preferably 2 to 4% by weight. If the average particle size is in the above range, if it is too small, the titanium oxide particles will aggregate and tend to be difficult to disperse uniformly in the transparent resin composition. This is because the transparency of the coat layer 4 is increased, and the metallic luster of the metallic luster layer 3 tends to increase the brightness of the luster, making it difficult to balance the effect of making fingerprint smudges inconspicuous. Further, if the content is in the above range, if it is too small, it becomes impossible to obtain the effect that fingerprint smear becomes inconspicuous, and conversely if it is too large, the transparent coating is caused by the high refractive index of titanium oxide. This is because the transparency of the layer 4 is lowered, and the metallic luster of the metallic luster layer 3 tends to lose its luster as luster.

  In the above example, the undercoat layer 6 is formed between the molded body 5 and the metallic gloss layer 3. However, when the metallic gloss layer 3 is easily bonded to the molded body 5, FIG. As shown in FIG. 2, the undercoat layer 6 is not necessarily formed. In this case, the step of providing the undercoat layer 6 can be omitted, and the manufacturing cost can be reduced.

  Similarly, in the above example, the top coat layer 7 made of an acrylic paint is formed on the transparent coat layer 4, but other top coat paints may be used instead. When the transparent coat layer 4 includes a material having a UV cut effect or is made of a hard material, and the contained glittering fine particles do not fall off, as shown in FIG. The coat layer 7 may not be formed. Also in this case, the step of providing the topcoat layer 7 can be omitted, and the manufacturing cost can be reduced.

  Further, in the above example, the present invention is applied to the lid 2 of the compact container. However, the molded body to which the present invention is applied is not limited to the container, and may be various resin molded bodies or other resin molded bodies. It can be applied to a molded body in which these members are combined. For example, it can be widely applied to mobile phones, stationery, home appliances, various cases, and the like.

  Next, examples of the present invention will be described together with comparative examples. However, the present invention is not limited to these examples.

  First, prior to Examples and Comparative Examples, the following molded articles were produced.

[Molded body]
A molded body in which the following layers were laminated in this order was produced.
Molded body PET resin
Undercoat layer Acrylic resin coating thickness 10μm
Metallic gloss layer Aluminum vapor deposition layer Thickness 0.04μm

[Example 1]
As the glittering fine particles, an acrylic resin coating agent containing 4% by weight of pearl pigment particles having an average particle diameter of 7 μm is applied to the molded body so as to have a thickness of 7 μm. The agent was applied to a thickness of 7 μm to obtain a target decorative molded body.

[Examples 2 to 9]
The types and blending ratios of the glittering fine particles were changed as shown in Table 1 below. Other than that was carried out similarly to the said Example 1, and obtained the target decorative molded object.

[Comparative Examples 1-7]
The types and blending ratios of the glittering fine particles were changed as shown in Table 1 below. Other than that was carried out similarly to the said Example 1, and obtained the target decorative molded object.

  The appearances of these Example products and Comparative Example products were evaluated from the standpoint of fingerprint smearing and the presence or absence of metallic luster, and the results are also shown in Table 1 below.

[Fingerprint dirt]
10 monitors visually observed and evaluated the difficulty of conspicuous fingerprint smearing in four levels: ◎ ... very inconspicuous, ○ ... inconspicuous, △ ... slightly inconspicuous, × ... not particularly improved, The average evaluation was sought.

[Metal luster]
10 monitors visually observed the presence or absence of metallic luster ◎… very shiny, ○… shiny, △… some shiny, Δ △… very slightly shiny, ×… almost shiny There was no evaluation, and an average evaluation was obtained.

  From the above results, it can be seen that the example products are generally good in both evaluations. In addition, it can be seen that the comparative example product is inferior to the example product because neither of these evaluations is good.

It is explanatory drawing of one Example of this invention. It is a longitudinal cross-sectional view in the said Example. (A), (b) is explanatory drawing of the other Example of this invention.

Explanation of symbols

3 Metal gloss layer 4 Transparent coat layer 5 Molded body 8 Pearl pigment particle S Metal gloss

Claims (3)

  The surface of the molded body is a decorative molded body in which a metallic luster layer and a transparent coating layer are provided in this order, and the transparent coating layer contains glittering fine particles having an average particle size of 0.2 to 60 μm. A decorative molded body, which is formed of a transparent resin cured body containing 2 to 6% by weight.   The decorative molded body according to claim 1, wherein the transparent coating layer is formed of a transparent resin cured body containing 2 to 6% by weight of pearl pigment particles having an average particle diameter of 1.0 to 60 µm.   The decorative molded body according to claim 1, wherein the transparent coat layer is formed of a transparent resin cured body containing 2 to 4 wt% of titanium oxide particles having an average particle diameter of 0.2 to 1.0 µm.

Images