The production and use of paper cups is in line with the national environmental protection policy, replacing disposable plastic cups with paper cups reduces "white pollution", and the convenience and low price of paper cups is the key to replacing other utensils widely occupied the market. Paper cups are divided into cold drink cups and hot drink cups according to use, and the material of paper cups must meet the needs of its packaging processing performance in addition to meeting its printing adaptation performance. Among the many factors in printing technology, it is also necessary to meet the conditions of hot sealing of paper cup processing.
The paper cup material produced by the paper cup machine is composed of paper cup base paper direct printing, die-cutting, molding processing, and spraying food wax on the surface. The production process of hot drink cup is made of paper cup base paper through the film into paper cup paper, printing, die-cutting, molding processing. The paper cup base paper is composed of plant fibers, and its production process is generally to use coniferous wood, broadleaf wood and other plant fibers through the pulp board after pulping by dredging, grinding, adding chemical accessories, screening, paper machine manufacturing. The paper cup of the paper cup machine is composed of the paper cup base paper and the plastic resin particle extrusion composite, the plastic resin is generally used polyethylene resin (PE), the paper cup base paper is coated with single-sided PE film or double-sided PE film to become a single PE cup paper or double PE cup paper.
PE has its own non-toxic, odorless, tasteless; Reliable health performance; Chemical properties are stable; Balanced physical and mechanical properties, good cold resistance; Water resistance, moisture resistance and certain oxygen resistance, oil resistance; Excellent molding performance and good heat sealing performance. PE production is large, the source is convenient, the price is low, but not suitable for high temperature cooking, if the paper cup has special performance requirements, then the plastic resin with corresponding properties is selected when the film is sprayed.