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专利名称：Process of making stretch wrap film发明人：Patrick Gennesson申请号：US10626635申请日：20030725公开号：US070521B2公开日：20060530
专利附图：
摘要：A method of making a plastics stretch film comprises the steps of taking a castor blown film of LLDPE at a temperature of between 50° C. and 100° C., stretching it intwo successive stretching steps, the first step having a stretch ratio higher than that ofthe second step, to cause both plastic and elastic deformation of the film. The film is then
relaxed to substantially release all of the elastic deformation and winding the
substantially relaxed film into rolls. Preferably, the first stretch ratio is in the range 1:1.70to 1:1.80 and the second stretch ratio is in the range 1:1.85 to 1:1.95, and there is areduction ratio of substantially 1:0.85 between the speed of the film during the secondstretch rolling step and the speed of the film during wind-up.
申请人：Patrick Gennesson
地址：Boulieu-les-Annonay FR
国籍：FR
代理机构：Lowe Hauptman Berner, LLP
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