JPS5825328B2 - Plastic materials - Google Patents

Description

[Detailed Description of the Invention] The present invention forms metallic-colored patterns or letters on the surface of a container body for storing cosmetics, medicines, etc., or a plastic molded product such as a lid attached to the mouth of the container body. This invention relates to a method for decorating plastic molded products.

Traditionally, various patterns, letters, or marks of manufacturers and sellers are formed on the surface of plastic molded products such as cosmetic containers and lids to decorate the plastic molded products and increase their decorative effect. In this case, forming patterns and letters in metallic color gives a very good appearance and a luxurious feel. The use of plastic molded products, such as containers and lids, would further enhance the image of these luxury goods and improve the product value.

For this reason, metal-colored patterns and letters have often been formed on the surface of plastic molded products, but the conventional methods all have advantages and disadvantages. There was nothing that could efficiently form metallic patterns and letters.

Furthermore, since there are only a few types of metal colors that can be used to color the formed patterns and characters, only a simple decorative effect can be obtained, and it has been difficult to paint them in beautiful metal colors that are rich in various variations.

In addition, especially (plastic molded products) look very unsightly when the plastic base is exposed, so the entire surface of the plastic molded product is covered with a metal coating etc. to decorate it. It is extremely difficult to form metal-colored patterns and letters on the entire surface of a plastic molded product covered with a decorative film, and the process of forming metal-colored patterns and letters is difficult. It became extremely complicated and troublesome, and it was not possible to form metal-colored patterns and letters efficiently and inexpensively.

The present invention has been made in view of the above circumstances, and its purpose is to cover the entire predetermined surface of a plastic molded product with a decorative film, and to provide this decorative film with a beautiful metallic color that is rich in various variations. It is possible to form patterns and letters easily and reliably, and it is possible to decorate plastic molded products in a very luxurious and stylish manner.

Moreover, it is an object of the present invention to provide a method for decorating plastic molded products in which metal-colored patterns and characters can be formed at low cost with simple and efficient steps.

In the present invention, a colorless transparent or colored transparent vapor phase plating film is formed on the entire predetermined surface of a plastic molded product, and after forming a clear coating film on the entire upper surface of this vapor phase plating film,
A predetermined dye that can penetrate into this clear coating film is blended, and a predetermined pattern or characters are printed on the upper surface of the clear coating film using a printing ink that has good releasability to the clear coating film, and A portion of the clear coating film corresponding to this printed layer is colored transparent, and then a decorative coating film that has good adhesion to the clear coating film is formed on the entire upper surface of the clear coating film including this printed layer, and finally, the above-mentioned When the printed layer on which predetermined patterns and characters are printed is physically removed from the clear coating film, the vapor phase is applied only to the area corresponding to the removed printing layer through the colored portion of the clear coating film. The plating film surface appears, and a variety of beautiful metallic-colored patterns and letters are formed on the plastic molded product.Hereinafter, one embodiment of the present invention will be described in more detail with reference to the drawings. explain.

In the figure, reference numeral 1 indicates a cosmetic lid made of plastic, and a case in which a metallic pattern or letters are formed on the surface of this lid will be described below.

First, in order to remove impurities such as mold release agent and dust adhering to the surface of the lid 1, a prescribed pretreatment such as degreasing is performed, and then a prescribed undercoat is applied to the entire outer surface of the clean lid 1. A thick adhesion-retaining coating film 2 is formed.

This adhesion-retaining coating film 2 generally has a weak adhesion between the vapor-deposited film obtained by the vacuum vapor deposition method described later and the plastic substrate, and even if the vacuum-deposited film is directly formed on the outer surface of the lid 1, the vapor-deposited film The adhesive coating film 2 is formed in order to prevent this from easily peeling off from the outer surface of the lid 1 and to maintain close contact between the outer surface of the lid 1 and the deposited film. Using vacuum deposition paint such as alkyd paint,
It is formed by painting using normal painting methods such as spray painting and brush painting.

Next, a vapor deposited film 3 of a predetermined thickness (usually 0.3 to 3 μm) is formed on the entire upper surface of the adhesion maintenance coating film 2 by the above-mentioned vacuum vapor deposition method.

This vapor deposition film 3 is formed using an ordinary vacuum vapor deposition apparatus such as a resistance heating method or an electron beam method, and is made of single metals such as aluminum and chromium, alloys such as stainless steel, oxides of these metals, and other inorganic metal compounds. Of these, those with a predetermined metallic color are heated and evaporated in a vacuum,
This is done by adhering it to the entire upper surface of the adhesion maintaining coating 2.

After forming a predetermined vapor deposited film 3 in this way, a clear paint such as acrylic paint is applied to the entire upper surface of this vapor deposited film 3,
A colorless and transparent clear coating film 4 is formed to a predetermined thickness by a normal coating method.

(See Figure 1B) Next, on the upper surface of the clear coating film 4, a printing ink containing a dye that can permeate into the clear coating film 4 and having good releasability from the clear coating film 4 is used. A predetermined pattern or characters are printed to form a printed layer 5.

The dyes blended into the printing ink include dyes that easily penetrate into the clear coating film 4, maintain the transparency of the clear coating film, and dye the clear coating film in a predetermined color;
For example, Sumifrene Blue (manufactured by Jusumi Chemical Co., Ltd.) and Polyprone Blue (manufactured by Odugaya Chemical Co., Ltd.) are used.

Further, the printing ink does not contain a solvent that would dissolve or swell the clear coating film 4 and attack it, and the formed printing layer 5 is easily physically removed from the clear coating film 4. It is preferable to use a material that is releasable and has good releasability (weak adhesion) to the clear coating film 4, such as cellulose-based screen printing ink.

Moreover, the printing layer 5 is formed by a normal screen printing method.

When the printed layer 5 of a predetermined pattern or characters is formed on the upper surface of the clear coating film 4 in this way, the portion of the clear coating film 4 where the printed layer 5 is formed, as shown in FIG. Then, the dye contained in the printing layer 5 permeates and is dyed in a predetermined color while maintaining the transparency of the clear coating film 4 to form a dyed portion 6, and the clear coating film 4 is dyed in a predetermined color. The portion where the printing layer 5 is not formed is exposed to the outside while maintaining its colorless and transparent state.

Next, a decorative coating film 7 is formed on the entire exposed portion of the clear coating film 4 and the entire upper surface of the printing layer 5, that is, on the entire upper surface of the clear coating film 4 including the printing layer 5.

This decorative coating film 7 not only decorates the lid 1 but also emphasizes the metal-colored patterns and letters formed and further enhances the decorative effect. Paint using appropriate colors.

Various paints such as acrylic paints and alkyd paints can be used as paints for forming the decorative coating film 7, and pearl materials such as fish scale foil and mica are blended into these paints to create pearls. It may be painted to give a pearl effect, or it may be mixed with metal powder or metal foil such as aluminum powder or foil to give it a metallic luster. A paint having good properties and relatively good adhesion to the printing layer 5 is used.

Further, the formation of the decorative coating film 7 is performed by a normal coating method such as spray coating, and the thickness of the coating film is the same as that of the printing layer 5.
The thickness is such that it very thinly covers the upper surface of the printed layer 5, and is formed so that the printed layer 5 can be easily removed during the peeling and removal process of the printed layer 5, which will be described later.

Next, as shown in the first diagram, after forming the printing layer 5 and the decorative coating film 7 on the upper surface of the clear coating film 4, the printing layer 5 is peeled off.

That is, for example, a cellophane adhesive tape 8 is pasted on the upper surface of the decorative coating 7 in a location corresponding to the location where the printing layer 5 is formed, and then this adhesive tape 8 is peeled off.

Then, on the one hand, the printing layer 5 is formed of a printing ink with good releasability from the clear coating film 4, and the adhesion between the clear coating film 4 and the clear coating film 4 is weak, and therefore the decorative coating film 7 The adhesive force of the printed layer 5 attached to the adhesive tape 8 through the adhesive tape 8 is stronger than the adhesive force between the printed layer 5 and the clear coating film 4, Since the coating thickness of the decorative coating film 7 is formed thin, when the adhesive tape 8 is pulled off, the decorative coating film 7 on the printing layer 5 is sheared into the same shape as the printing layer 5. At the same time, the printed layer 5 is attached to the adhesive surface of the adhesive tape 8 via the sheared decorative coating film 7.

At the same time, the printing layer 5 is peeled off and removed from the clear coating film 4.

Moreover, on the other hand, the above-mentioned decorative coating film 7 and the above-mentioned clear coating film 4
Since the adhesion between the adhesive tape 8 and the adhesive tape 8 is strong, it is formed directly on the clear coating film 4 when the adhesive tape 8 is peeled off.

The portion of the decorative coating film 7 that has been removed remains on the clear coating film 4 as it is, and only the adhesive tape 8 is peeled from this portion.

In this way, the adhesive tape 7 is pasted on the upper surface of the decorative coating film 6 corresponding to the area where the printed layer 5 is formed, and when this adhesive tape 7 is peeled off, the printed layer on which a predetermined pattern or characters are printed is formed. 6 is peeled off and removed from the clear coating film 4 at the same time, and as shown in FIG. 1E, the clear coating film 4 is exposed to the outside corresponding to the location where the printing layer 6 was formed.

As described above, a dyed part 6 impregnated with a predetermined dye is formed on the entire exposed part of the clear coating film 4, and this dyed part 6 is exposed to the outside. Since it is colored and transparent, the vapor deposited film 3 is exposed to the outside through the dyed portion 6, thereby forming the display portion 9 corresponding to the predetermined pattern or characters of the printed layer 5.

The color of this display portion 9, that is, the formed pattern or character, is given by a combination of the unique color of the vapor deposited film 3 and the color of the dyed portion 6.

In this way, the display section 9 consisting of a predetermined metal-colored pattern or characters is formed on the lid 1, and this display section 9
A decorative coating film 7 is formed on the other surfaces of the lid 1.

Finally, a colorless and transparent protective coating is applied to the entire upper surface of the decorative coating film 7 and the entire surface of the display area 9 using a clear paint such as a urethane paint that has relatively good wear resistance as a top coat. A film 10 is formed to protect the decorative coating film 7 and the display section 9, and the entire surface is decorated with a predetermined color as shown in FIGS. 1F and 2. A lid with metal-colored patterns and letters formed on the part is manufactured.

Although the above embodiment has been described with reference to the case where metallic patterns and letters are formed on the surface of the lid, the invention is not limited to this, and can be similarly applied to other plastic molded products. In addition to the flat surface of molded products,
It can be similarly applied to curved surfaces, uneven parts, etc.

Furthermore, in the above example, a vapor deposition film was formed by vacuum deposition on the surface of the plastic molded product via an adhesion-retaining coating, but the surface of the plastic molded product was subjected to physical or chemical roughening such as sandblasting or chemical etching. If the roughening method is used, it is possible to omit the adhesion-retaining coating and form a vapor deposited film with relatively good adhesion directly on the surface of the plastic molded product, and it is also possible to form the vapor deposited film in a matte finish. , can give subdued satin-like metallic patterns and letters.

Further, in the above embodiment, the vapor deposited film was formed by a vacuum evaporation method, but the method is not limited to this, and a vapor phase plating film can be formed using an appropriate vapor phase plating method such as cathode sputtering or ion blating. It is also possible to form a printed layer on the clear coating film, and to form a dyed portion on the printed layer forming portion of the clear coating film using a dye contained in the printed layer. By using printing inks containing dyes of different colors or by adding dyes to only some of the printing inks for multicolor printing, it is possible to form dyed areas of various different colors. Therefore, it is possible to easily and reliably form metal-colored patterns and characters of various colors.

In addition, although cellophane adhesive tape was used to peel off the formed printed layer, the present invention is not limited to this, and other physical means may also be used.Furthermore, the formation of a protective coating film may be omitted if necessary. Various changes may be made to other configurations without departing from the gist of the present invention.

As explained above, the present invention forms a vapor-phase plating film on the entire predetermined surface of a plastic molded product, forms a clear coating film on the entire upper surface of the vapor-phase plating film, and then coats the upper surface of the clear coating film with a clear coating film. A permeable dye is contained in the clear coating film, and predetermined patterns and characters are printed on the clear coating film using a printing ink with good releasability.

The above-mentioned clear coating includes a portion of the above-mentioned clear coating film on which the above-mentioned printed layer is formed, which is colored and transparently dyed with the above-mentioned dye to form a dyed portion, and then the above-mentioned clear coating includes the printed layer.

After forming a decorative coating film that adheres well to the entire upper surface of the film, the printed layer and the portion of the decorative coating film that corresponds to this printed layer are physically peeled off and removed from above the clear coating film. Therefore, it is possible to easily and reliably obtain a plastic molded product in which the entire base surface of the plastic molded product is covered with a beautiful decorative coating film, and metallic patterns and letters are formed on this decorative coating film. The color of the patterns and letters can be easily and freely changed by changing the color of the vapor-phase plating film by changing the color of the dyed part. For example, even with the same golden pattern, it can change from whitish gold to reddish. It is possible to freely paint in a wide range of colors such as gold and other colors as required, and it is possible to obtain extremely beautiful metallic-colored patterns and letters with a wide variety of variations. If no color is formed, or a dyed area is formed on the entire surface of the clear coating, and the entire surface of the clear coating is the same color, in particular, the cosmetic coating may be whitened using pearl paint, etc. When formed in a semi-transparent or light color, the decorative paint film is generally thin, so the decorative paint film is affected by the base, and the same color as the letters on the metal-colored pattern is projected, causing the metal-colored pattern and letters to appear in the same color. However, in the present invention, the effect of making these metal-colored patterns and letters stand out and make them clear may not be obtained by blurring the peripheral edges of Since the dyed portion is formed only in the area of the clear coating corresponding to the printing layer formation area, that is, in the pattern or character area to be formed, the above-mentioned inconvenience does not occur and the decorative coating is Even if this is reflected due to the background, the metallic patterns and letters will be clearly and beautifully decorated.
A embossed effect is given, and the decorative effect of the plastic molded product can be further enhanced.

In addition, patterns and characters are printed on the vapor phase plating film via a clear coating film using ink that has good releasability with this clear coating film, and furthermore, this clear coating film is applied to the entire surface of the clear coating film including this printed layer. Since a decorative coating film with good adhesion is formed on the clear coating film, only the printed layer on which patterns and letters are printed can be easily and reliably physically peeled off and removed from the clear coating film, and the decorative coating film and metal can be easily and reliably physically peeled off and removed. Color patterns and letters can be efficiently formed, and since the patterns and letters are printed and formed on the clear coating film using a printing method, fine and complex patterns and letters can be easily formed, and the printing layer When peeling off, the vapor phase plating film is protected by this clear coating, so it will not be damaged in any way, and the metallic-colored patterns and letters will be removed from the clear coating and the vapor phase plating underneath. Since these patterns and letters are provided by a coating, there is no inconvenience that these patterns and letters will peel off or be damaged by abrasion during use, and there is no need to use solvents etc. to peel off the printing layer, so it is suitable for plastic molded products. The substrate and the formed coating film are not attacked and damaged by the solvent, and the printed layer can be removed simply by physical means, so the removal work can be carried out efficiently and the process is also simple. It has the advantage of being able to decorate plastic molded products efficiently and inexpensively.

EXAMPLE A SAN resin (Tyryl) molded product was washed with a solvent, then undercoated with 5000G alkyd resin paint manufactured by Toho Kaken, and baked and dried at 70° C. for 60 minutes.

Then, after performing aluminum vapor deposition processing on the surface of the above molded product using a vacuum evaporation device, Neozapon Yellow G
Apply a topcoat with Toho Kaken's 990 acrylic resin paint colored by G, and bake at 60°C for 30 minutes.
I did drying.

Next, a predetermined pattern was printed using Kamaya Chemical's white cellulose screen ink containing 0.5 part of Polyprone Red BE (Odogaya Chemical) dye, and after drying at 80°C for 30 minutes. The entire top-coated surface, including the printed surface, was coated with aluminum powder colored 990 paint, and dried at 60° C. for 30 minutes.

After cooling to room temperature, a cellophane adhesive tape is attached to the upper surface of the aluminum powder colored 990 paint surface (decorative coating surface) at a location corresponding to the printed surface, and the printed film and the corresponding decorative coating surface are attached. was forcibly removed.

Finally, as a protective film coating, R
-70°C after painting with 230 clear paint
Baking and drying was performed for 60 minutes to form a beautiful golden pattern on the molded product, and a predetermined surface of the molded product other than the pattern was decorated with a matte yellow color.

In addition, the above-mentioned dye penetrates into the area corresponding to the above-mentioned printed surface of the above-mentioned top-coated surface, forming a dyed area, and the above-mentioned golden pattern is colored with a slightly reddish gold color, creating a beautiful pattern. was formed.

[Brief explanation of the drawing]

1A to 1F are longitudinal cross-sectional views of a cosmetic lid for sequentially explaining an example of an implementation process of the present invention, and FIG. 2 is a plan view of the open lid showing a state in which the surface is decorated on the same side.

Claims (1)

[Claims] 1. After forming a vapor phase plating film on the entire predetermined surface of a plastic molded product, and forming a clear coating film on the entire upper surface of this vapor phase plating film, a penetrant dye is blended into this clear coating film, and the above-mentioned A predetermined pattern or character is printed on the upper surface of the clear coating film using a printing ink that has good releasability to the clear coating film, and the dye is applied to the area of the clear coating film corresponding to the printing layer formation location. After forming a colored transparent dyed area and then forming a decorative coating film that has good adhesion to the clear coating film on the entire upper surface of the clear coating film including the printing layer, the printing layer and the decorative coating film are coated. A part corresponding to the printing layer is physically peeled off and removed from the clear coating film, a predetermined surface of the plastic molded product is covered with the cosmetic coating film, and a metallic color pattern or characters are formed on this decorative coating film. A method for decorating a plastic molded product, characterized by: