Method for manufacturing metal-like packing paper

Abstract

The invention discloses a method for manufacturing metal-like packing paper, which comprises the following steps sequentially: (1), coating a metal printing ink on the paper base of the packing paper; (2), laminating the surface, which is coated with the metal printing ink, of the paper base of the packing paper with a thin film; and (3), after laminating, drying the metal printing ink, and separating the packing paper from the thin film to obtain the metal-like packing paper. The technical flow of the invention is simple and crafty; the cost is low; and the metal-like packing paper with good surface flatness, high brightness and holographic effect can be obtained.

Description

technical field [0001] The invention belongs to a production method of wrapping paper, in particular to a production method of wrapping paper with metallic texture. Background technique [0002] Metallic wrapping paper (referred to as "metallic wrapping paper") is widely used as the inner lining paper of cigarettes, tea leaves, chewing gum, etc. Most of the existing wrapping papers with metallic texture are silver, and a few are golden luster. They all form a metal material layer on the surface of the paper base. There are mainly the following production methods: [0003] 1. Aluminum foil composite method: directly composite aluminum foil on the paper. The biggest disadvantage of this method is that the thickness of the aluminum foil is large, the amount of aluminum material is large, and the cost is high. It has been phased out; [0004] 2. Transfer coating metal ink method: that is, coat a layer of metal ink on the roll film substrate, and the metal ink is also required t...

AI Technical Summary

Problems solved by technology

The deficiencies of the transfer coating metal ink method are: (1), the metal ink layer is difficult to obtain good surface smoothness, and the reasons are as follows: first, it is difficult to obtain ideal smoothness originally on the metallic ink coated on the roll film substrate surface Secondly, the surface flatness of the metal ink after transfer will become worse again. Therefore, the metal texture brightness and flatness of the wrapping paper surface by the transfer coating metal ink method are very poor, and it appears gray and dark, which cannot reach the ordinary metal texture. Effect; (2), the operation process is complicated, and there are many procedures; in order to transfer the metal ink layer, it is not only necessary to additionally increase the used reel film substrate (as a temporary carrier for the metal ink layer) for transferring the metal ink layer, but also requires the metal ink layer to be able to transfer, so the formulation of the metallic ink layer is complex

[0005] 3. Direct vacuum aluminizing method: This method coats a bottom layer on the surface of the paper substrate, and then directly vacuum aluminizes the bottom layer, so the cost is lower than that of the aluminum foil composite method, and the process is simple, but its disadvantage is that the product surface flatness is poor , Low brightness, rough and porous surface, so that the product packaging grade is low, not suitable for high-end packaging requirements;

The main disadvantages of the above method are: (1), the process flow is long and complicated, and after the holographic pattern is formed, the vacuum aluminum plating process must be carried out on the surface of the holographic pattern, which requires high production technology and is difficult; (2), The isolation layer may be partially peeled off during the peeling process, so it is difficult to recycle the peeled film, resulting in high cost and waste of the above method

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