一、概述国外从20世纪70年代开始着手研究双组份无溶剂型聚氨酯粘合剂,从20世纪80年代起美国、意大利、法国、德国等国已经开始大量使用无溶剂胶粘剂,目前在欧洲主要国家的使用量已占复合膜胶粘剂总用量的70%～90%,而且欧美已立法限制溶剂型胶粘剂的使用量。国内食品包装复合膜 First, an overview From the 20th century, 70’s started to study two-component solvent-free polyurethane adhesive, from the 1980s the United States, Italy, France, Germany and other countries have begun extensive use of solvent-free adhesives, mainly in Europe The use of the country has accounted for 70% to 90% of the total amount of composite film adhesive, and Europe and the United States have legislated to limit the use of solvent-based adhesives. Domestic food packaging composite film