一、多层共挤薄膜的应用全球对塑胶的应用市场中,塑胶薄膜占第一位。随着经济的发展及市场竞争的日趋激烈,用户对薄膜的使用功能要求越来越高。单层薄膜包装已无法满足包装水平提高的需要。发达国家共挤薄膜已占包装薄膜总量的38%,目前中国市场的单层薄膜每年需求量明显下降。 First, the application of multi-layer co-extruded film The global market for plastic applications, plastic film accounted for the first. With the economic development and increasingly fierce market competition, users have become increasingly demanding on the use of thin films. Single-layer film packaging has been unable to meet the needs of packaging levels. Co-extruded film has accounted for 38% of the total packaging film in developed countries, the current annual demand for single-layer film in the Chinese market decreased significantly.