JPS63247784A - Molding having hologram on surface - Google Patents

Abstract

PURPOSE:To permit observation of a hologram from different angles by forming a relief hologram image part on one face of a transparent plastic substrate, providing a partially vapor deposited metallic layer thereon and coating the image part inclusive of said layer with a vapor deposited metal compd. layer. CONSTITUTION:The relief hologram image part 2 having a fine rugged pattern group of 1-2mum in pitch and 0.1-0.3mum in embossing depth is formed on one face of the transparent plastic substrate 1 consisting of a polystyrene resin or polycarbonate resin. The metallic layer 3 consisting of aluminum, chromium or the like is deposited by evaporation on the image part 2 while said layer is positioned at the center thereof and is adjusted to 100-2,000Angstrom film thickness. The metal compd. layer 4 which extends on the layer 2, has both functions to transmit and reflect light and consists of titanium oxide, silicon oxide, zinc oxide, etc., is deposited by evaporation on the end part inclusive of the above- mentioned metallic layer at the thickness adjusted to 100-5,000Angstrom . The entire surface is protected with a synthetic resin film if necessary. Then, the feel of the images are different between the layers 3 and 4 and, therefore, the observation from the different angles is possible.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a plastic molded product having a three-dimensional image formed by a relief hologram integrated on its surface. The present invention relates to molded products having holograms on their surfaces, such as stationery cases, cosmetic containers, and synthetic resin cards.

[Prior art and its problems]

Traditionally, holograms have been used in display-related and advertising fields for eye-catcher effects and unexpected three-dimensional effects, and are also used as covers and illustrations for books and magazines, as gifts, and as novelties. It is being

However, the only products that have a hologram reproduced on a plastic molded product are molded products that have the replicated hologram pasted or transferred onto a sheet-like object, which lacks a sense of unity with the molded product and does not provide a satisfactory effect. I can't. Furthermore, if the light-reflecting layer of the hologram does not transmit light, the molded product to which the hologram is pasted or transferred has the disadvantage that the contents cannot be seen.

[Problem that the invention attempts to solve]

In light of the above-mentioned current situation, the present invention is one in which a hologram image is formed integrally with the base material of a plastic molded product,
The object of the present invention is to provide a plastic molded product having a hologram that partially reflects light and partially transmits light.

[Means for solving problems]

That is, in the present invention, a relief hologram image area is formed on one side of a transparent plastic base material, a metal vapor deposition layer is partially provided on the hologram image area, and a metal compound is formed so as to cover the entire surface of the hologram image area. This is a molded product with a hologram on its surface and a vapor-deposited layer.

Next, the present invention will be explained in detail based on the drawings.

FIG. 1 is a sectional view conceptually showing the structure of a molded product having a hologram on its surface according to the present invention.

In the present invention, a relief hologram image area 2 is provided on one side of a transparent plastic base material 1, a metal vapor deposition layer 3 is partially provided on the hologram image area 2, and the entire surface of the hologram image area 2 is A metal compound vapor deposited layer 4 is provided to cover the metal compound.

The transparent plastic base material 1 is made of polystyrene resin, polycarbonate resin, methacrylic resin, vinyl chloride resin, acrylonitrile-styrene copolymer resin, polyethylene terephthalate resin, 4-methylpentene-1 polymer resin, styrene-butadiene copolymer resin. Transparent plastic molding materials such as can be used.

The relief hologram image area 2 is formed as a fine uneven pattern group on one side of the transparent plastic base material 1, with a pitch of 1 to 2 μm and an embossing depth of 0.1 to 0.
．． It is 3 μm. To form a hologram uneven pattern on the surface of a transparent plastic substrate, a standby plate for forming a hologram image is fixed and placed in an injection mold so as to be flat against the inner surface of the mold. It can be made by filling a mold with molten resin using an injection molding method, cooling it, and solidifying it.

The metal vapor deposition layer 3 is provided on the relief hologram image area 2 on one side of the transparent plastic substrate 1 for the purpose of reflecting light, and the metal material includes aluminum, chromium, nickel, gold, silver, copper, etc. The type of metal can be selected depending on the required durability, corrosion resistance, or required color.

The metal vapor deposition layer 3 can be provided by a vacuum evaporation method, a sputtering method, an ion blating method, etc., and its thickness is preferably 100 to 2,000 Å.If it is less than 100 Å, light reflection will be insufficient, and if it is 2,000 Å or more, In this case, defects such as cracking, peeling, or blistering are likely to occur.

The metal compound vapor-deposited layer 4 has both the functions of transmitting and reflecting light, and is formed on the metal vapor-deposited layer 3 so as to cover the entire surface of the hologram image area 2 . As the metal compound material, titanium oxide, silicon oxide, zinc oxide, cadmium sulfide, antimony oxide, magnesium fluoride, iron oxide, etc. can be used. The metal compound vapor-deposited layer 4 is made of two or more different types of metal compound materials in a small amount (two or more layers can also be provided, and can be formed by a vacuum vapor deposition method or a sputtering method, and the thickness is Preferably 100 to 5000 people.

Further, on the metal vapor deposited layer 3 or on the metal compound vapor deposited layer 4
It is also possible to perform silk screen printing, hot stamping, etc. on the surface. Furthermore, if the metal compound of the metal compound vapor deposition layer 4 has a soft surface, a synthetic resin protective film may be provided to cover the entire surface of the metal compound vapor deposition layer 4 for the purpose of surface protection.

〔Example〕

A stamper plate on which a hologram image was formed was fixed and placed in a flat surface on the inner surface of the mold in an injection mold as a lid of a cosmetic container (compact). Using the injection mold, methacrylic resin was heated to a resin temperature of 235°.
Injection molding at C (cylinder 1 temperature, front 230℃, middle 2
20°C, rear part 210'C, mold temperature 55°C), and aluminum was partially vacuum-deposited to a thickness of 500 mm on the hologram forming surface of the injection molded product, which had unevenness in the hologram image obtained. Next, 1 portion of titanium oxide is applied onto the aluminum vapor-deposited layer so as to cover the entire surface of the hologram image.
Vacuum deposition was carried out to a film thickness of 0.000 mm.

The resulting molded product had different hologram images in the aluminum evaporated area and the titanium oxide evaporated area, and the hologram could be observed from different angles.

Furthermore, since the part where the titanium oxide was attached was transparent, it was possible to see through the inside.

[Effect of idea]

As described above, the molded product having a hologram on the surface of the present invention has two different types of light reflective layers on the surface, a metal vapor deposited layer and a metal compound layer, so that there are parts where only the metal compound layer has a light reflective layer, The two reflective layers, the metal compound layer and the metal vapor deposition layer, reflect light in different ways, making it possible to obtain very distinctive images.

Further, since the metal compound vapor deposited layer is transparent, it serves as a light reflecting layer for reproducing the hologram image, and also allows the inside of the molded article to be seen through the hologram image from the outside.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a sectional view of a molded product of the present invention, and FIG. 2 is a partially cutaway plan view of the molded product. (1)...Transparent plastic base material (2)...Hologram image forming surface (3)...Metal vapor deposited layer (4)...Metal compound vapor deposited layer Figure 1 Figure 2 Procedure correction writing type ) % formula % 1. Indication of the case Patent Application No. 81645 of 1988 2. Name of the invention Molded product with a hologram on the surface 3. Relationship with the person making the amendment case Patent distributor address 1 Taito, Taito-ku, Tokyo 5-1-4, date of amendment order: June 3, 1986 (shipped on June 30, 1988) 4, subject of amendment: The specification is amended as follows. A. Amend "Title of the invention" in the third line of page 1 of the specification to "Title of the invention." B. Line 5 of page 1 of the specification: “Claims for Utility Model Registration”
shall be amended to read "the scope of claims." C0 Specification, page 1, line 11, “Detailed explanation of the invention” is changed to “
amended to ``Detailed Description of the Invention''.

Claims (1)

[Claims] A relief hologram image area is formed on one side of a transparent plastic base material, a metal vapor deposition layer is provided partially on the hologram image area, and a metal compound vapor deposition layer is provided on the entire surface of the hologram image area. A molded product with a hologram on its surface.