CN101220572B - Paperboard packing material with partial holography effect and manufacturing method thereof - Google Patents

Abstract

The invention discloses a card paper packaging material with local holographic effect and a manufacturing method thereof, which includes steps: films are provided; a metal coating is evaporated in vacuum on the film surface; a chemistry resistance corrosion protective layer is printed on the metal coating, the shape of which is corresponding to the needed metal graphic or design; the metal coating outside the protective covered area on the film surface is removed by chemical corrosion, and the needed graphic or design is obtained on the film surface; the transparent or semitransparent ink is coated on the metal plated surface of the film; pigments are printed on the metal plated surface of the film according to the card paper color; the metal plate is evaporated in vacuum on the paint printing surface of the film again; the obtained film and the card paper is combined, or the graphics is transferred to the card paper by the traditional transfer technique. The invention makes the holographic graphics on the metal card paper directly, thus obtaining novel composite packaging material. Compared with the traditional local holographic gold blocking technique, the processing cost is reduced and the production efficiency is improved sharply.

Description

Cardboard packaging material with partial holographic effect and manufacturing method thereof

technical field

The invention relates to a cardboard packaging material and a manufacturing method thereof.

Background technique

Cardboard packaging materials can be widely used in the outer packaging of various products such as color boxes and cardboard. In the production process of traditional cardboard packaging boxes, metallization treatment such as bronzing treatment is required to obtain a certain visual effect, but this bronzing treatment requires higher processing costs and longer processing time.

Contents of the invention

The object of the present invention is to provide a cardboard packaging material with low cost and high production efficiency and a production method thereof.

The manufacturing method of the cardboard packaging material of the present invention comprises the steps of: providing a film; vacuum-depositing a metal coating on the surface of the film; printing a chemical corrosion-resistant protective layer on the metal coating, the shape of the protective layer corresponding to the required metal figure or pattern ; remove the metal coating outside the area covered by the protective layer on the film surface by chemical corrosion, and obtain the desired metal figure or pattern on the film surface; coat transparent or translucent ink on the metal-plated surface of the film; according to the required cardboard The paint is printed on the metal-plated surface; the metal coating is vacuum-evaporated again on the paint-printed surface of the film; the obtained film is compounded with the required cardboard.

The above steps or processes can also be completed on the transfer film, get the reverse side of the desired pattern on the transfer surface, transfer the graphics on the transfer surface to the cardboard, peel the film from the cardboard, so that the holographic pattern is transferred to the cardboard superior.

The film is preferably a transparent polymer film, and a chemical-resistant insulating material such as polyethylene terephthalate (PET) can be used.

Aluminum, copper or silver can be used as the evaporated metal, preferably aluminum.

Preferably, the coating thicknesses of the two vapor depositions are both 300 angstroms to 500 angstroms.

In addition, the protective layer can use acid and alkali resistant coatings or inks such as polyamide inks, etc.; chemical corrosion can be carried out with acidic or alkaline corrosion solutions such as sodium hydroxide or hydrochloric acid.

The cardboard packaging material of the present invention is produced according to the above method.

The difference between the present invention and the prior art is that the prior art can only obtain metal cardboard or a kind of holographic film, and the above effect can be obtained only after partial bronzing treatment of the paperboard, while the present invention converts the holographic pattern directly It is made on metal cardboard to obtain a new type of composite packaging material. Compared with the traditional partial holographic bronzing process, the invention greatly reduces the processing cost and improves the production efficiency.

Detailed ways

In a vacuum device, an aluminum layer is vapor-deposited on one side of a flexible insulating film made of materials such as thermosetting resin, and the coating thickness is preferably 300 to 500 angstroms. Thereafter, the aluminum-plated insulating film is taken out from the vacuum device, and printed on the aluminum-plated surface of the insulating film by a printing method known in the art, and a polyamide ink protective layer of predetermined pattern or pattern is formed thereon. The predetermined figure or pattern corresponds to the desired figure or pattern. Then, the insulating film is introduced into an etching tank equipped with sodium hydroxide, and the aluminum layer outside the area covered by the polyamide ink protective layer is etched away to obtain the required metal pattern or pattern on the aluminum-plated surface of the insulating film; Apply transparent or translucent inks to protect the pattern layer prepared on the film.

Through the above steps, a translucent film material with holographic effect can be obtained. Next, the full-scale paint printing is carried out on the aluminum-plated surface of the film according to the color of the required cardboard, and then the film is placed in a vacuum device. An aluminum layer is evaporated on the printing surface, and the coating thickness is preferably 300 angstroms to 500 angstroms. This process is called the secondary aluminum plating process. After the above process, a laser aluminized film with a holographic pattern can be obtained. The aluminized film is combined with cardboard (for example, 70g-400g cardboard) by a dry method or a wet method, and a metal cardboard with a holographic pattern is obtained after compounding. The above-mentioned film material can also be changed into a transfer film, and the pattern on the film is transferred to the cardboard directly after the film is peeled off from the cardboard by a conventional transfer method.

The difference between the above invention and the prior art is that the previous process can only obtain metal cardboard, and then hot stamping, but this process makes the holographic pattern on the metal cardboard at one time, so as to obtain a new type of composite packaging Material. Compared with the traditional partial holographic bronzing process, the manufacturing method of the packaging material of the present invention greatly reduces the processing cost.

Those skilled in the art should understand that the above embodiments are only for explaining the present invention, and should not be construed as any limitation thereto.

Claims (6)

1. A method for making cardboard packaging material, comprising the steps of: provide film; Vacuum vapor deposition of metal coating on the surface of the film; Printing a chemical corrosion resistant protective layer on the metal plating layer, the shape of the protective layer corresponds to the desired metal figure or pattern; Removing the metal coating outside the area covered by the protective layer on the surface of the film by chemical etching, and obtaining the desired metal figure or pattern on the surface of the film; Coating transparent or translucent inks on the metallized surface of the film; Print paint on the metallized surface of the film according to the color of the required cardboard; Vacuum-evaporated metal coating on the paint printing surface of the film again; The obtained laser metallized film with holographic pattern is compounded with the required cardboard. 2. The method according to claim 1, characterized in that, after the composite step, further comprising the steps of: Transfer the pattern on the film to the cardboard and peel the film off the cardboard. 3. The method of claim 2, wherein the film is a transparent polymer film. 4. The method of claim 3, wherein the metal coating is an aluminum layer. 5. The method according to any one of claims 1-4, characterized in that, the coating thicknesses of the two vapor depositions are both 300 angstroms to 500 angstroms. 6. A cardboard packaging material, characterized in that it is made according to the method described in any one of claims 1-4.