Preparation method of aluminized paper for beer labels and aluminized paper obtained by the method

Abstract

The invention provides a method for preparing aluminum-plated paper for beer labels. The preparation method includes paper surface treatment, vacuum aluminum plating, and surface coating of the aluminum-plated layer. The paper surface treatment is carried out by compound transfer coating with a base film. Before the paper is compounded with the base film, it is back-coated with an acrylic emulsion with a solid content of 11%-13% and a viscosity of 18-20s on the machine. A 300-mesh steel roller is used as the coating roller for the back-coating. The wet coating amount is 4.5‑4.8g / m2, the drying temperature is 65‑75°C, the machine speed is 90‑95m / min; The speed is 90-95m / min. The preparation method of the present invention has the characteristics of simple process and low cost compared with the traditional moisture regaining process. The aluminum-coated paper obtained by the method of the present invention has stable and controllable moisture in the paper and appropriate alkali penetration time, and is especially suitable for use as a beer label . The present invention also provides an aluminized paper obtained by the above preparation method.

Description

technical field [0001] The invention relates to a method for preparing label paper, in particular to a method for preparing aluminized label paper, and more particularly to a method for preparing aluminized paper for beer labels. The present invention also relates to an aluminized paper obtained by the above preparation method. Background technique [0002] Aluminum-coated paper is composed of base paper, aluminum layer and coating. Aluminum-coated paper has been widely used because of its good gloss, smoothness and softness, high fastness of aluminum layer, good printing performance and mechanical processing performance. Used to make beer labels. The preparation method of beer labels generally includes paper surface treatment, vacuum aluminum plating, aluminum surface coating, printing and slitting and other processes. Paper surface treatment can be directly coated on the surface of the paper, or it can be peeled off after laminating with the base film. to transfer the co...

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Problems solved by technology

[0003] Since the paper will lose part of its moisture after compound drying, vacuum aluminum plating and other processes, in order to ensure the moisture content of the finished paper, the existing process is to use steam to regain moisture after top coating, but the cost of steam regaining moisture is high, and steam is not easy to enter the paper In addition, the aluminum-coated paper is easily affected by the temperature and humidity in the production environment during the preparation process. When the ambient humidity is high, the paper is prone to moisture, which will affect the vacuum degree of the aluminum-plating process and cause shutdowns. , when the ambient humidity is low, the paper is easy to lose water and cause deformation and warpage; while there are many factors that affect the alkali permeability of aluminized paper, in addition to the characteristics of the base paper, it is also closely related to the thickness and coating quality of each coating. Manufacturers of aluminum paper are usually not easy to control the quality characteristics of the base paper, but there is no strict limit on the thickness of each coating, which often leads to the production of aluminized paper that does not meet the requirements of alkali penetration, and causes some unmarked signs to appear when washing bottles in breweries. phenomenon, adverse consequences

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