Preparation method of environment-friendly coated paper for food packaging

Abstract

The invention discloses a preparation method of environment-friendly PE coated paper for food packaging, which comprises the following steps: S1, adding alkyl ketene dimer, a sodium aluminate solution, a defoaming agent, an antibacterial solution and deionized water into a stirrer in batches according to different proportions, stirring and dispersing uniformly at 25-30 DEG C and at the rotating speed of 450-750r / min, then heating to 82-85 DEG C, continuing to dissolve for 18-25min, and then cooling to room temperature to obtain the environment-friendly PE coated paper for food packaging. Diluting until the concentration is 6-8% to obtain a lamination material; s2, the raw paper is mounted on a corona roller of a corona machine for corona surface treatment, and the surface of the raw paper is roughened; and S3, loading the film coating material into a hopper of a film coating machine, loading the raw paper subjected to corona treatment into the film coating machine, spraying the mixture on a single surface or double surfaces of the raw paper through the film coating machine, and drying to obtain a finished product of the film coated paper. By arranging the stirrer, mixed raw materials can be stirred, and mixing and dissolving of the raw materials are accelerated, so that combination between a film layer and a base material layer of coated paper is facilitated, and the product quality is improved.

Description

technical field [0001] The invention relates to the technical field of coated paper, in particular to a preparation method of environmentally friendly coated paper for food packaging. Background technique [0002] Coated paper is a composite material in which plastic particles are coated on the surface of the paper through a casting machine. The main feature is that the composite material can be oil-proof, waterproof and heat-sealing. Different uses have different characteristics: when used for wrapping hamburgers, their oil-repellent properties. [0003] In the production process of the existing coated paper, in the process of mixing and stirring different formulations, it cannot be guaranteed that the raw materials are stirred evenly, which leads to a relatively poor bonding ability between the film layer and the substrate layer of the finally prepared coated paper. Poor, unable to meet the usage requirements. SUMMARY OF THE INVENTION [0004] The object of the present...

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Problems solved by technology

[0003] In the existing production process of coated paper, in the process of mixing and stirring different formulas, it is impossible to ensure that the raw materials are stirred evenly, which leads to a weaker bonding ability between the film layer and the substrate layer of the final coated paper. Poor, unable to meet the requirements of use

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