Preparation process of food grade antibacterial packaging paper

Abstract

The invention discloses a preparation process of a food grade antibacterial packaging paper. The process consists of: taking totally chlorine-free bleached wood pulp as the main fibrous raw material, adding 10%-20% of konjac glucomannan modified polylactic acid fiber and 0.1%-1.0% of sodium alginate modified chitosan fiber and performing blending; then adding 0.1%-3% by mass of cationic guar gum, 0.02%-0.6% by mass of polyethylene oxide and 0.01%-0.3% by mass of silica sol, and conducting molding in a paper sheet molder to form a wet paper web; then applying 2%-10% of carboxymethyl chitosan on the wet paper web surface with a scraping rod to perform surface enhancing; and carrying out oil press treatment and drying so as to obtain the food grade antibacterial packaging paper. The finished paper obtained by the process provided by the invention has good surface properties and excellent liquid resistance, can shield external bacteria intrusion, prevent microorganism access and provide sterile protection, and has all the major technical indexes reaching the quality level of food grade antibacterial packaging paper.

Description

technical field [0001] The invention belongs to the field of special paper, and in particular relates to a preparation process of food-grade antibacterial wrapping paper. Background technique [0002] Food antibacterial packaging paper is a kind of packaging paper with antibacterial function, which can protect food from microbial intrusion during storage, transportation and storage, so as to improve the shelf life and shelf life of food; at the same time, the paper is required to be smooth, with high tensile strength, suitable for printing and printing. Food hygiene requirements, is a special paper with high added value. [0003] Therefore, the development of food antibacterial packaging paper with good antibacterial properties, high strength and good smoothness can meet the safety and hygiene requirements of food packaging, improve the safety level of food packaging, and have high economic and social benefits. [0004] At present, the production of food antibacterial paper...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned shortcoming of the prior art, the object of the present invention is to provide a kind of food wrapping paper technology with antibacterial property, after polylactic acid fiber and chitosan fiber are processed, and complete chlorine-free bleaching commercial wood pulp is prepared, The pore size of the paper is reduced, and the antibacterial properties of the paper are improved by using the special properties of chitosan fibers, and the interpenetrating network of three fibers is used to form, which increases the compactness of the paper, improves the tightness, and improves the performance of the paper sheet; uses cationic Guar gum, polyethylene oxide, silica sol / ternary particle retention and drainage system can improve the uniformity of paper formation; and the surface is enhanced with carboxymethyl chitosan, which can achieve antibacterial, hydrophobic, adhesive and synthetic properties. The unification of film properties solves major technical problems such as poor water resistance, poor surface strength, lint and powder shedding, etc., and can greatly improve the surface strength, antibacterial performance, water resistance, tensile strength and folding endurance of paper Wait