Generally, the ink manufacturer will give a reference ratio when providing the ink. At the same time, the color printing factory should make a small test before the production, if the amount of the curing agent is too small, the crosslinking degree of the curing agent and the resin is low, the adhesion strength of the ink layer, Heat resistance and hydrolysis resistance will decrease; if there are too many curing agents, excessive crosslinking will occur, affecting the crystallization and micro

As the market competition becomes more and more intense. In order to meet the needs of the market, in addition to further strengthening the quality control of printing, lamination and other processes, more and more attention is paid to the processing quality of heat-sealed bags.

Modern food packaging materials mainly include plastics, papers, composite materials (plastic/plastic, plastic/paper, plastic/aluminum, foil/paper/plastic, etc.), glass bottles, metal cans. Wait. We mainly describe composite materials and plastic packaging.

Modern packaging is based on scientific analysis, calculation, rational selection, design and decoration, using advanced packaging techniques and packaging machinery. As a qualified product, in addition to the product (food) should be tested, the packaging must also undergo various tests. Such as the permeability, moisture permeability, oil resistance, moisture resistance of the packaging container, the role of the packaging container (material) and the food, the residual amount of the packaging