纸杯的常识(国外英文资料).doc

纸杯的常识(国外英文资料) First, the history of paper cups 1 cone / folding paper cup The first paper cups were cone shaped, made by hand, glued together, easily separated, and must be used as soon as possible. Folding cups appeared later, folding folds on the side wall to increase the strength of the side walls and the durability of the paper cups, but it is difficult to print the patterns on these folded surfaces, and the effect is not very satisfactory. 2. Coated paper cups In 1932, the first wax coated two paper cups came out, and its smooth surface can be printed with a variety of exquisite patterns, to enhance the promotional effect. Cup wax hand can avoid direct contact with the beverage and paper materials, but also can protect the adhesive glue, enhance the durability of the cup; on the other hand also increased the thickness of the side wall, the paper strength greatly improved, so as to reduce the production of heavier cups required for paper quantity, reduce the production cost. With the wax coated paper cups becoming the best containers for cold drinks, people also hope to use a convenient vessel to carry hot drinks. However, hot drinks will melt the inner surface of the wax layer paper cup, so the adhesive stoma will separate, wax coated cups, generally does not apply to contain hot drinks. 3, straight wall double cup In order to expand the scope of the paper cup, in 1940, the straight wall double layer paper cups were pushed to the market. The paper cup is not only convenient to carry, but also can be used for containing hot drinks. Subsequently, the manufacturers also coated these cups of latex to cover the cardboard flavor of paper material, and to strengthen the leak proof of paper cups. Single coated wax cups coated with latex are widely used in self-service vending machines to carry hot coffee. 4, polyethylene coated paper cups Some food companies began to spread polyethylene on cardboard to increase barrier and tightness in paper packaging. Because the melt