JPS6017194A - Production of metal vapor deposited paper - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing metallized paper having a decorative decorative pattern rather than a single metallic glossy surface.

Recently, paper coated with metals such as aluminum has become widely used for labels, etc., and one way to add decorative patterns to it is to make the surface textured by embossing. . However, the metal-deposited paper embossed in this manner has a drawback of poor printability due to surface irregularities. In addition, the pattern of the embossing roll cannot be faithfully transferred due to the cushioning properties of the paper, which makes it difficult to apply fine embossing, and the expected effect tends not to be obtained.

The present invention relates to a method for manufacturing metal-deposited paper with a decorative pattern and excellent printability, which eliminates the above-mentioned drawbacks, and the gist thereof will be explained with reference to the drawings. Fig. 1 shows the manufacturing process of the metallized paper of the present invention, in which a protective layer is formed on the base film 1, which also serves as a release layer having an uneven decorative pattern on the surface opposite to the surface in contact with the base film. forming a layer 2; forming a metal vapor deposition layer 5 on the protective layer;
After bonding with base paper 5 via adhesive layer 4, the base film is peeled off to produce the metallized paper of the present invention.

The base film 1 is made of cellophane, polyester, polypropylene, or the like. The protective layer 2 is a resin layer made of epoxy resin, modified phenol resin, polyester resin, polyester or polyester modified urethane resin, polyamide resin, salt-vinyl acetate resin, acrylic resin, etc., and also serves as a release layer from the film. Depending on the combination of the film and the protective layer, peeling may not be easy t≧, but in that case, a peeling layer of methyl cellulose, microcrystalline wax, silicone oil, etc. should be formed between the base film and the protective layer, or a protective layer Good peeling can be obtained by mixing an appropriate amount into the resin forming the layer.

The greatest feature of the present invention lies in the formation of a decorative pattern with an uneven design on the surface of the protective layer opposite to the surface in contact with the base film.

This uneven pattern is formed, for example, by passing the resin of the protective resin layer that also serves as a release layer between pressure rolls whose surface has an uneven pattern that has a design effect, just before it loses its plasticity due to evaporation of the solvent. can do.

At this time, by using a roll with a smooth surface as the packing roll, the surface of the protective layer in contact with the base film is smooth, and the opposite surface is formed with an uneven pattern.

For example, by applying photolithography technology, the uneven pattern of the pressure roll can be produced with a very fine pitch width, and by coloring the protective layer, the final product can be
It is also possible to create interference fringes whose gloss and color subtly change depending on the viewing angle.

The uneven pattern can also be formed by the following method. That is, a protective resin layer that also serves as a release layer is formed on the base film in advance into a uniform layer using, for example, a roll coater.
In this method, a resin layer having an uneven surface is formed thereon by, for example, gravure printing or screen printing. In this case, if a resin having a refractive index different from that of the undercoat layer is used, the final product will have a more excellent design effect. This protective layer, which also serves as a release layer, is usually formed to have a thickness of 1 μm to 20 μm. If it is less than 1 μm, it will be difficult to form a protective layer with unevenness, and if it is more than 20 μm, defects such as surface cracks will become noticeable in the product.

As described above, a metal vapor deposition layer is formed on the formed protective layer by known means such as vacuum vapor deposition, ion blasting, and sputtering. The metals used in the present invention include not only single metals but also alloys and metal compounds, such as Al, C! u, Ag, Au, Zn5n, etc., Zn, S,,','S:b203.0u20, ZnO,
Al2O3, 5n02, TiO2, MgO1CdS, etc. are appropriately combined to form a single layer or multiple layers. At this time, extremely beautiful interference fringes can be produced by forming the film to have an optical thickness that is an odd number multiple of one wavelength.

The present invention is then laminated to a base paper 5 via an adhesive layer 4, and the bonding method is a wet lamination method using a known water-soluble adhesive or water-based emulsion.
, B AA % A dry lamination method using polyurethane resin, urethane resin, or the like, or an extrusion lamination method may be used. The metallized paper of the present invention is finally obtained by peeling off the base film from the protective layer. There is no unevenness on the surface even though some unevenness is visible. Therefore, it becomes a product with excellent printability and extremely practical value.

Example-1 Toluene:MEK=1:1:3 of acrylic modified polyester resin was applied to a 12 μm thick polyester film.
0wt% solution was coated with a roll coater to a dry film thickness of 10μ.
After the resin is coated on the resin, it is coated with a forming roll consisting of numerous straight lines intersecting each other at right angles with a pitch width of 1 m + I+, and the straight parts are formed with convex parts with a height of 5 μm, while the resin is plastic. , by applying a packing roll with a hard smooth surface to the back side and passing a linear pressure of 2 K2/, tE, υ
A resin protective layer was formed with a smooth surface in contact with the base film and an uneven surface on the other surface. Then, using a vacuum evaporation device, 5X
100OA of metal aluminum at 10-6 TOrr
Deposited. Next, a two-component curable polyurethane resin was applied to a dry coating thickness of 5 μm, and laminated with high-quality paper having a basis weight of 1 o g/ms. After sufficient aging of the resin, the base film was peeled off. The obtained metal-deposited paper had an aluminum metallic luster, and although a fine mesh-like embossed pattern was visible, the surface was smooth and printability was good.

Example-2 Toluene of acrylic modified polyester resin: MKK=1+1 30wt on a 12 μm thick polyester film
% solution to a dry film thickness of 3 μm using a roll coater, and then coated with a wavelength of 20 nm using a gravure roll.
A pattern with a convex portion height of 5 μm in which countless waveforms (sine curves) of 5 mm in pitch and 0.1 mm in pitch were superimposed was formed using acrylic resin.

Next, a vapor deposited layer of antimony sulfide was formed at 1200X,
Next, 1. 1000λ of metallic aluminum was vapor-deposited. Next, it was laminated with high quality paper in the same manner as in Example 1, and the base film was peeled off to obtain metallized paper. The obtained metallized paper had an extremely beautiful iris color, and although a fine wave-shaped embossed pattern was visible, the surface was smooth and printability was good.

[Brief explanation of the drawing]

FIG. 1 is an enlarged cross-sectional view for explaining the process of the method for producing metallized paper of the present invention. 1 is a base film, 2 is a protective layer that also serves as a release layer, 3 is a metal vapor deposition layer, 4 is an adhesive layer, 5 is a base paper, and A is a decorative pattern having an uneven design effect.

Claims (1)

[Claims] A protective layer that also serves as a release layer is formed on the base film, and has an uneven decorative pattern on the surface opposite to the surface in contact with the base film, and a metal vapor deposited layer is formed on the protective layer. A method for producing metallized paper with excellent printability and a design effect, which is characterized by peeling off a base film laminated to a base paper via a layer.