JP2673121B2 - Manufacturing method of patterned metallic tone decorative sheet - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a decorative sheet having a metallic color to be used as various surface decorative sheets for furniture, building materials, office equipment and the like. 2. Description of the Related Art Conventionally, as a method for producing a metallic decorative sheet using a metal thin film, there has been proposed a method of depositing a metal thin film on the back surface of a polyester film whose surface is hairline processed. Also, an experiment was conducted on vapor-depositing a metal on the back surface of an embossed film whose surface was embossed. However, the former method of applying hairline processing is a method of mechanically scratching the surface of the polyester film by the hairline, so that it has a low aesthetic appearance and a delicate appearance. No expression can be obtained.
Further, in the case of using the latter embossed film, since the back surface is not perfectly smooth and a good metal thin film cannot be obtained, the aesthetics due to embossing and the metallic feeling of the thin film metal are not fully exhibited. Furthermore, it is not possible to vapor-deposit or sputter metal only on the printed portion. The present invention has been made in view of the above points, the delicate expression of the embossed film and the printed pattern are synchronized in a multi-layered manner, and is further combined with the metallic feeling of the metal, of a very useful metal-like decorative sheet. It is intended to provide a manufacturing method. [0004] As shown in the figure, the method for producing a metallic decorative sheet with a pattern according to the present invention is, as shown in the figure, ordinary vacuum deposition on the surface of a base film (2) made of a polyester film. Method, sputtering method, ion plating method, cluster ion beam evaporation method, and electron beam evaporation method are used to form a metal thin film layer (3) at 50Å to 50
A metal thin film layer forming process with a thickness of 00Å and a crystal pattern, a metal corrosion pattern on the surface of the transparent surface film (4),
Embossed (4a) selected from grain pattern and woven pattern
And a print pattern forming step of forming a partial print pattern or a watermark print pattern (4b) on the back surface of the transparent surface film (4), and an emboss forming step and a print pattern forming step. A step of dry laminating the back surface of the surface film (4) on which the printed pattern is formed on the surface of the metal thin film layer (3) formed on the surface of the base film (2) by the metal thin film layer forming step. It has a feature. The metallic decorative sheet with a pattern produced by the above-mentioned method has a metal thin film layer (3) having a thickness of 50Å to 5000Å formed on the surface of a base film (2) made of a polyester film, and is formed on the surface. Embossed (4a) selected from crystal pattern, metal corrosion pattern, grain pattern, and woven pattern, and a partial print pattern or watermark print pattern (4b) on the back side.
Of the transparent front surface film (4) formed in advance on the back surface of the metal thin film layer (3) by dry lamination. A release paper (6) can be attached to the back surface of the base film (2) via a pressure sensitive adhesive (7). In the figure, reference numeral 5 represents an adhesive layer formed by dry lamination. The polyester film used as the base film 2 is excellent in 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), and nickel.
(Ni), chromium (Cr), iron (Fe), aluminum (A
l), titanium (Ti), zinc (Zn), cobalt (C
o) and others can be used and can be used as an alloy in addition to a simple metal. For example, in addition to stainless steel (Fe-Ni-Cr), brass (Cu-Zn), bronze (Cu-Sn), nickel-chromium (Ni-Cr), nitrides such as titanium nitride can be used. Further, in order to form the above metal on the base film 2 as the metal thin film layer 3, an ordinary vacuum deposition method,
It is selected from a sputtering method, an ion plating method, a cluster ion beam evaporation method, and an electron beam evaporation method. The metal thin film layer 3 may have a thickness of 20Å to 10000Å, preferably 50Å to 5000Å, more preferably 100Å to 1000Å. In claim 1, the range is from 50Å to 5000Å. Further, the surface film 4 may be a colored transparent film, and as the material, a polyvinyl chloride film, an acrylic resin film, a polyester film or a fluororesin film can be used. The type of the embossed pattern 4a is selected depending on the type of the metal, which gives the metallic feeling of the metal, and is selected from a crystal pattern, a metal corrosion pattern, a grain pattern, and a woven pattern. The type of the print pattern 4b is formed by using appropriate printing such as gravure printing, offset printing, etc., and geometric patterns (for example, stripes, checks, dots), sand patterns, ground patterns, and other appropriate patterns are also used. Can be selected.
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 formed by dry lamination. For that purpose, a two-component reactive urethane-based or polyester-based adhesive can be preferably used. After application of the adhesive, the adhesive is heated at a low temperature (about 40 ° C.) to remove the solvent and adhere in a semi-solidified state with tackiness. 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 has a thickness of only about 400 Å, and some opaque concealment layers are required because some light is transmitted. In addition, some metals easily corrode depending on the type of metal used, but in this case a protective coat is provided if necessary. A pressure-sensitive adhesive is applied to the back surface of the completed metal-tone decorative sheet, and release paper is attached. Further, a more useful decorative sheet can be obtained by providing a pattern on the surface embossed film by silk screen printing. According to the method for producing a metallic decorative sheet of the present invention, the embossed portions 4a formed in advance on the front and back sides of the transparent surface film 4 are subtly delicately expressed and partially printed or watermark printed. 4b synchronizes in a multi-layered manner, and by adopting dry lamination, the surface state of the metal thin film layer 3 is extremely good and the state of the embossed surface 4a on the surface is not impaired, and the metallic feeling of metal and the crystal pattern,
This kind of metal-like decorative sheet has a delicate expression of metal corrosion pattern, grain pattern, woven pattern, embossing, and excellent appearance that maximizes partial printing or watermark printing as a whole. There is an effect that can be obtained. EXAMPLE A thin nickel film (400 Å) was formed on a polyester film having a thickness of 20 μm by a sputtering method, and a protective coating was applied to the surface thereof. Also, emboss the PVC film with the embossed pattern of silk dust cloth,
On the back, using white and gray ink,
Watermark watermark printing was performed in advance. Next, using a two-component reaction type urethane adhesive, the printed surface of the transparent polyvinyl chloride film and the nickel thin film surface of the polyester film were compounded by dry lamination. Further, the back surface of the polyester film was coated with black to form a hiding layer. The completed metal-tone decorative sheet was extremely aesthetic and effective.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of a metallic decorative sheet manufactured by a method according to the present invention. FIG. 2 is a sectional view of the same. FIG. 3 is an exploded view of the same. [Explanation of symbols] 1 decorative sheet, 2 base film, 3 metal thin film layer,
4 surface film, 4a embossing, 4b printed pattern,
5 adhesive layer, 6 release paper, 7 adhesive

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication location C23C 14/20 C23C 14/20 A (72) Inventor Hiroshi Tanaka 3902 Ishibe, Ishibe-cho, Koga-gun, Shiga Prefecture Shikasei Co., Ltd. Shiga Factory

Claims (1)

(57) [Claims] Base film (2) made of polyester film
A metal thin film layer (3) having a thickness of 50Å to 5000Å is formed on the surface of the substrate by a method selected from ordinary vacuum evaporation method, sputtering method, ion plating method, cluster ion beam evaporation method and electron beam evaporation method. A metal thin film layer forming step, a crystal pattern on the surface of the transparent surface film (4),
An embossing step of forming an embossing (4a) selected from a metal corrosion pattern, a grain pattern and a woven pattern, and a partial print pattern or a watermark print pattern (4b) on the back surface of the transparent surface film (4). A printing pattern forming step
A metal thin film layer (3) in which the back surface of the surface film (4) having embossed and printed patterns formed on the front and back sides by the embossing forming step and the print pattern forming step is formed on the surface of the base film (2) by the metal thin film layer forming step. And a step of performing dry lamination on the surface of the metal sheet.