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    • 9. 发明申请
    • SYSTEM AND METHOD FOR WINDING POLYMERIC FILMS, SUCH AS LOW MODULUS, POLYOLEFIN FILMS
    • 用于卷绕聚合物薄膜的系统和方法,如低模量,聚烯烃薄膜
    • WO2008140983A1
    • 2008-11-20
    • PCT/US2008/062604
    • 2008-05-05
    • 3M INNOVATIVE PROPERTIES COMPANY
    • DELMORE, Michael D.
    • B65H18/00
    • B65H18/00B65H2301/4127B65H2701/1752
    • A method and system of winding polymeric film includes providing a length of polymeric film (e.g., low modulus, optical grade film) along with at least one small diameter strand. The film and the strand are simultaneously wound about a cylinder to form a wound roll, with strand being interposed between successively wound layers of film. The strand establishes a gap between the outermost and immediately underlying wound layers of film. The gap facilitates natural movement (e.g., relaxation) of the outermost wound layer relative to the immediately underlying wound layer, thereby compensating for any winding-related stress or tension. The strand can be laterally moved (e.g., oscillated) relative to a width of the film with continuous winding.
    • 缠绕聚合物膜的方法和系统包括提供一段长度的聚合物膜(例如,低模量,光学级膜)以及至少一个小直径的链。 膜和股线同时围绕圆筒缠绕以形成卷绕辊,其中纱线插入在连续卷绕的膜层之间。 股线在膜的最外面和最下面的缠绕层之间建立间隙。 该间隙促进了最外层缠绕层相对于紧靠下面的缠绕层的自然运动(例如松弛),从而补偿任何缠绕相关的应力或张力。 线可以相对于具有连续卷绕的膜的宽度而横向移动(例如,振荡)。