公开(公告)号：US20050258563A1

公开(公告)日：2005-11-24

申请号：US10496733

申请日：2002-12-06

申请人： William MacDonald ,  Pierre Moussalli ,  Kenneth Evans ,  Julian Attard ,  David Boyce ,  Christopher Naylor ,  Brian Farmer ,  David Robins

发明人： William MacDonald ,  Pierre Moussalli ,  Kenneth Evans ,  Julian Attard ,  David Boyce ,  Christopher Naylor ,  Brian Farmer ,  David Robins

IPC分类号： C08G63/688 ,  C08J5/18 ,  G09F3/02 ,  B29C55/04

CPC分类号： C08J5/18 ,  C08G63/6886 ,  C08J2367/02 ,  Y10T156/10 ,  Y10T428/28 ,  Y10T428/2813 ,  Y10T428/2817 ,  Y10T428/2826 ,  Y10T428/31786

摘要： A process for the production of a polymeric film comprising a copolyester having an acid component and a diol component, said acid component comprising a dicarboxylic acid and a sulfomonomer containing a sulfonate group attached to the aromatic nucleus of an aromatic dicarboxylic acid, said process comprising the steps of: (i) melt-extruding a layer of said copolyester; (ii) stretching the extrudate in at least one direction; (iii) heat-setting the film by raising the temperature of the stretched film to a temperature T1 in a first heating zone such that (TM-T1) is in the range of from 5 to 30° C., and then raising the temperature of the film to a temperature T2 in a second heating zone such that (TM-T2 is in the range of from 0 to 10° C., wherein TM is the peak melting temperature of the polymeric film; wherein T2 is greater than T1; and wherein the times which a transverse section of the film spends in the first and second heating zones are defined by t1 and t2, respectively, such that the ratio of t1 to t2 is at least 2:1; and a polymeric film obtainable thereby having an ultimate tensile strength at destruction in the range of 2 to 15 kgf/mm2 in the machine direction and 2.5 to 17 kgf/mm2 in the transverse direction.

摘要翻译： 一种制备聚合物膜的方法，所述聚合物膜包含具有酸组分和二醇组分的共聚酯，所述酸组分包含二羧酸和含有连接到芳族二羧酸的芳香核上的磺酸基的磺基单体，所述方法包括 步骤：（i）熔融挤出所述共聚酯层; （ii）在至少一个方向上拉伸挤出物; （iii）通过将拉伸膜的温度升高到第一加热区中的温度T 1＆lt; 1＆gt;＆lt; 1℃）在5至30℃的范围内，然后在第二加热区中将膜的温度升高至温度T 2 N，使得（T _{M 2 在0至10℃的范围内，其中T M是聚合物膜的峰值熔融温度;其中 T 2大于T 1;并且其中膜的横截面在第一和第二加热区中花费的时间由t 1定义， / SUB和t 2分别使得t 1至t 2的比例至少为2:1;和聚合物 膜可以在机器方向上具有在2至15kgf / mm 2范围内的极限拉伸强度和在横向上为2.5至17kgf / mm 2的极限抗拉强度 方向。}