Test method for adhesion of aluminum layer of aluminized paper

Abstract

A method for testing an adhesive force of an aluminized paper aluminum layer comprises the following steps: to-be-tested paper is provided, and the surface of the to-be-tested paper is plated with the aluminum layer; an adhesive tape adheres onto the aluminum layer, then the adhesive tape is stripped from the aluminum layer at a constant speed, at least a portion of the aluminum layer is stripped from the surface of the to-be-tested paper along with the stripped adhesive tape due to adhesion of the adhesive tape, and the other portion of the aluminum layer is retained intact; an ink is coated on the surface of the aluminum layer, having the adhesive tape stripped, of the to-be-tested paper, and after the ink is retained for a specified period of time, the ink on the aluminum layer is wiped out, wherein the aluminum layer-stripped portion of the to-be-tested paper absorbs the ink; and image processing is carried out on the aluminum layer, and through a ratio of obtained pixels occupied by the intact-retained portion of the aluminum layer to pixels occupied by the whole tested area, the adhesive force of the aluminum layer of the to-be-tested paper is obtained. The method for testing the adhesive force of the aluminum layer of the aluminized paper is fast and convenient and low in cost, and can accurately and objectively evaluate the aluminizing fastness of paper.

Description

technical field [0001] The invention relates to a test method for paper surface adhesion, in particular to a quantitative test method for paper adhesion to an aluminum layer. Background technique [0002] Depending on the chemical materials, sizing materials and papermaking processes used in papermaking, the surface conditions of the paper formed (coating smoothness, coating absorption, etc.) are also different. The same process parameters are used for aluminizing processing. Although the obtained aluminized paper may not be able to distinguish the difference between different papers in appearance, some of the aluminized paper may cause a series of problems after being made into cigarette labels. , such as insufficient fastness, ink loss, poor friction resistance, etc. In other words, the differences in the paper itself have a great influence on these properties of the aluminized paper. [0003] In order to improve the quality of aluminized paper, it is necessary to evalua...

AI Technical Summary

Problems solved by technology

During the fastness test, whether the peeling speed used by each operator is the same, whether the angle when tearing the tape is the same, these factors may affect the final fastness evaluation results

This evaluation method is relatively extensive, and the repeatability and reproducibility of the results are greatly disturbed by human factors. At the same time, it is impossible to give a quantitative evaluation of the fastness.

[0004] The industry also uses machines to peel off the tape adhered to the aluminum layer, and then evaluates the retention of the aluminum layer on the aluminized paper, but this method still cannot achieve quantitative evaluation of the adhesion of the aluminum layer