JPH0536686Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a metal-toned decorative sheet used as a decorative sheet for various surfaces such as furniture, building materials, office equipment, etc.

[Prior Art] Conventionally, a metal-like decorative sheet using a metal thin film has been proposed, in which a metal thin film is deposited on the back side of a polyester film whose front surface is hairline-treated.

We also experimented with vapor-depositing metal on the back side of an embossed film whose front surface was embossed.

[Problems to be solved by the invention] However, the former hairline processing method is a processing method in which the hairlines mechanically hit the surface of the polyester film, so the aesthetics are poor and the appearance is delicate and subtle. cannot be obtained.

Furthermore, in the case of using the latter embossed film, the back surface is not completely smooth and a good metal thin film cannot be obtained, so that the aesthetics of the embossing and the metallic feel of the thin metal film cannot be fully exhibited.

Furthermore, metal vapor deposition or spatter cannot be applied only to areas other than the printed area.

The present invention was developed in consideration of the above points, and has created an extremely useful metallic decorative sheet in which the delicate and delicate expression of the embossed film and the printed pattern are synchronized in a multilayered manner, and which are further combined with the metallic feel of the metal. The purpose is to provide

[Means for Solving the Problems] As shown in the figure, the present invention forms a metal thin film layer 3 on the surface of a base film 2 made of polyester film, and has a crystal pattern, a metal corrosion pattern,
Emboss 4a selected from grain patterns and textile patterns
Further, the back side of a transparent front film 4 on which a partially printed pattern or watermark print pattern 4b has been formed in advance is dry laminated on the surface of the metal thin film layer 3, and pressure sensitive adhesive is applied to the back side of the base film 2. A patterned metal-like decorative sheet 1 is characterized in that a release paper 6 is attached via an agent 7. still,
In the figure, reference numeral 5 indicates an adhesive layer formed by dry lamination.

The polyester film used as the base film 2 has excellent heat resistance and adhesion to the metal thin film layer.

The types of metals used for the metal thin film layer 3 include gold (Au), silver (Ag), copper (Cu), nickel (Ni), chromium (Cr), iron (Fe), aluminum (Al), and titanium (Ti). ), zinc (Zn), cobalt (Co), and others, and can be used as a single metal or as an alloy.
For example, stainless steel (Fe-Ni-Cr), brass (Cu-
Zn), bronze (Cu-Sn), nickel-chromium (Ni-
In addition to Cr), nitrides such as titanium nitride can also be used.

In addition, in order to form the above-mentioned metal on the base film 2 as the metal thin film layer 3, various methods can be used in addition to the usual vacuum evaporation method, sputtering method, ion plating method, cluster ion beam evaporation method, and electron beam evaporation method. technology can be used.

The thickness of the metal thin film layer 3 is 20 Å to 10000 Å, preferably 50 Å to 5000 Å, more preferably 100 Å.
~1000Å can be used.

Further, the surface film 4 may be a colored transparent film, and the material may be a polyvinyl chloride film, an acrylic resin film, a polyester film, or a fluororesin film.

The type of embossed pattern 4a depends on the type of metal, and the embossed pattern that gives the metallic feel of the metal is selected, such as crystal pattern, metal corrosion pattern, grain pattern,
Choose from textile patterns.

The type of printed pattern 4b is formed using appropriate printing such as gravure printing or offset printing, and includes geometric patterns (for example, stripes, checks, dots),
It is possible to select other appropriate patterns such as a sand grain pattern and a ground tie pattern.

However, it is necessary to perform partial printing or watermark printing so that the metal thin film layer 3 can be seen from the surface.

The adhesive layer 5 is bonded by dry lamination. For this purpose, a two-liquid reaction type urethane-based or polyester-based adhesive can be suitably used. After the adhesive is applied, it is heated at a low temperature (approximately 40°C) to evaporate the solvent, resulting in a semi-solid adhesive state.

In addition, a concealing process is provided on the back surface of the base film 2, that is, the surface opposite to the metal thin film layer 3, if necessary. For example, gold is expensive, so it is only about 400 Å thick, and some light passes through it, so an opaque hiding layer is required.

Also, depending on the type of metal used, some metals are susceptible to corrosion, and in this case, a protective coat is provided if necessary.

A pressure-sensitive adhesive 7 is applied to the back side of the completed metallic decorative sheet, and a release paper 6 is further pasted.

Further, by providing a pattern on the surface embossed film by silk screen printing, a more useful decorative sheet can be obtained.

[Function and Effect] According to the metal-like decorative sheet 1 of the present invention, the delicate and delicate expression of the embossing 4a formed in advance on the front and back sides of the transparent surface film 4 and the partial printing or watermark printing pattern 4b are synchronized in a multilayered manner. By using dry lamination, the surface condition of the metal thin film layer 3 is extremely good, and the surface embossing 4a is
The condition of the metal is not impaired, and the metallic feel of the metal, the delicate and subtle expression of the embossing selected from crystal patterns, metal corrosion patterns, grain patterns, and textile patterns, as well as partial printing or watermark printing patterns. It has an excellent appearance that is maximized as a whole, and has the effect of expanding the scope of use of this type of metallic decorative sheet.

[Example] A thin nickel film (400 Å) was formed on a 20 μm thick polyester film by sputtering, and a protective coating was applied to the surface.

In addition, the polychlorinated gonyl film was embossed with a silk crepe embossed pattern, and the back side was previously watermarked with a grain pattern using white and gray inks.

Next, the printed surface of the transparent polyvinyl chloride film and the nickel thin film surface of the polyester film were combined by dry lamination using a two-component reactive urethane adhesive.

Furthermore, the back side of the polyester film was coated with black to form a concealing layer.

The completed metallic decorative sheet was extremely aesthetically pleasing and effective.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the metallic decorative sheet according to this invention, FIG. 2 is a sectional view thereof, and FIG. 3 is an exploded view thereof. 1... Decorative sheet, 2... Base film, 3...
...Metal thin film layer, 4...Surface film, 4a...Emboss, 4b...Printed pattern, 5...Adhesive layer, 6...
...Release paper, 7...Adhesive.

Claims (1)

[Scope of utility model registration request] Base film 2 made of polyester film
A metal thin film layer 3 is formed on the surface of the metal layer 3, and an embossment 4a selected from a crystal pattern, a metal corrosion pattern, a grain pattern, or a textile pattern is formed on the surface, and a partial printing pattern or a watermark printing pattern 4b is formed on the back surface. The back side of the transparent surface film 4 is dry laminated on the surface of the metal thin film layer 3, and a release paper 6 is attached to the back side of the base film 2 via a pressure sensitive adhesive 7. Patterned metallic decorative sheet.