KR100259554B1 - Process of aluminium food pack - Google Patents

Abstract

PURPOSE: A food wrapping paper manufacturing method by partially vacuum-evaporating with aluminium is provided to conveniently distinguish content with the naked eye by forming transparent parts on the food wrapping paper by partial aluminium vacuum evaporation. CONSTITUTION: A food wrapping paper manufacturing method by partially vacuum-evaporating with aluminium includes the steps of forming a mold release layer(3) on a transparent part of a plastic film(1) excluding printing ink layer parts(2) before the vacuum-evaporation of aluminium, forming an aluminium vacuum evaporation layer(4) on the whole surface, cleaning the layer with water, and removing the aluminium layer on the mold release layer parts.

Description

Manufacturing method of partially vapor-deposited food wrapper of aluminum

The present invention, in various food packaging papers such as bread or confectionery made by depositing color patterns of various colors and aluminum on a transparent plastic film, leaves a part of the transparent film so that the contents of the package can be easily recognized and the appearance is beautiful. A method of making a partially deposited food wrapper of aluminum to be visible.

In general, the production of various food packaging paper using plastic film and aluminum is printed on the plastic film by a series of processes in a single system by the gravure printing method, and then vacuum-deposited aluminum powder on the back surface for food use It was a method of manufacturing a wrapping paper, but the food wrapping paper manufactured and manufactured in this way is printed brilliantly over the entire surface with letters and patterns made of printing inks of various colors and aluminum, and what is the contents only by the letters and figures written on the outside of the wrapping paper. Although it can be confirmed, the reality of the contents of the wrapping paper, that is, the actual shape, shape and color of the contents and the change of color, whether the discoloration was not able to grasp with the naked eye.

Therefore, even if the contents were changed or discolored, there was an inconvenience that could not be known without opening the wrapping paper.

The present application improves the defects of the conventional food wrapping paper as described above, and the packaging can be produced by printing various colors of printing inks and aluminum deposition on the plastic film so that the contents can be easily observed and grasped by the naked eye. To provide a method of manufacturing a partially-deposited wrapper of aluminum to transparently identify a portion of the film of a certain shape to the naked eye to the contents, it will be described in detail as an example.

After printing the printing ink layer of various chromaticity with predetermined letter or figure pattern on one side of the food packaging plastic film by the usual gravure printing method, the part to be left as a transparent area is first applied and printed with a release agent and then transferred. After printing the aluminum powder on the back surface of the printing ink layer and the release agent printing layer by a conventional vacuum deposition method, a plurality of forward-rotating rollers are alternately rotated between the take-up roller and the reverse roller of the cured wrapping paper fabric. By repeatedly passing several times between the forward and reverse rollers in the installed water, only the aluminum deposition layer on the layer portion printed with the release agent is peeled off by the washing force of the water, leaving only the transparent plastic film.

The aluminum partial-deposited wrapping paper of the present invention manufactured as described above is mostly printed in a color pattern so that the inner contents are not visible, while only a portion is kept as a transparent film body so that the contents can be identified therethrough. And increase the reliability in the producer and distribution process can be beneficial to induce a credit society, and also the aluminum part deposition wrapping paper of the present invention is formed to leave the transparent portion deliberately, the printing method or the process is not complicated and varied as conventional Print in the same way, except for the transparent part, instead of using the release agent instead of ink, no separate process is required, but only the process of washing with water to remove the printed release agent and the aluminum layer is added. As it is possible with batch printing While the acid cost is not added remarkably, the transparent effect of the transparent window of the food packaging is remarkably exhibited.

The method of manufacturing a wrapping paper in which aluminum is partially deposited by the method of the present invention and a portion is left as a transparent film is the same as a general printing method, and the packaging paper produced by the method is clearly visible by the transparent part. There is a discernible effect.

Claims (1)

(Twice Correction) A printing ink layer 2 is printed on one surface of a plastic film 1 for food packaging by gravure printing, and then aluminum is partially deposited thereon to produce food packaging paper. After forming the release agent layer (3) on the transparent portion other than the layer (2), the aluminum deposition layer (4) is formed over the entire surface, and then washed with water in the usual manner to peel only the aluminum layer of the release agent layer (3). Method for producing a food wrapping paper partially deposited aluminum characterized in that.

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