公开(公告)号：US06623679B2

公开(公告)日：2003-09-23

申请号：US09751117

申请日：2000-12-29

申请人： Wen-Li A. Chen ,  Timothy F. Cilano ,  Larry K. Maier ,  Jeffrey P. Johnson

发明人： Wen-Li A. Chen ,  Timothy F. Cilano ,  Larry K. Maier ,  Jeffrey P. Johnson

IPC分类号： B29C4792

CPC分类号： C08J5/18 ,  B29C47/92 ,  B29C55/143 ,  B29C55/20 ,  B29C2947/92628 ,  B29C2947/92923 ,  B29K2067/00 ,  C08J2367/02 ,  G03C1/7954 ,  G03C2200/43

摘要： A method for controlling the width of a polyester film support comprising, in order, the steps of: (a) extruding a polyester resin using one or more extruders; (b) casting the resin on a casting wheel to form a polyester sheet; (c) stretching the polyester sheet along the machine direction by ratios of 3 to 5 times at temperatures ranging from above the glass transition temperature to below the thermal crystallization temperature, wherein the machine contains extended edge rollers (14) in the drafter at the point where stretching occurs; (d) stretching the polyester sheet along the transverse direction by ratios of 3 to 5 times at temperatures ranging from above the glass transition temperature to below the thermal crystallization temperature; and (e) heat setting the polyester sheet at temperatures ranging from 180 to 250° C.

公开(公告)号：US06228569B1

公开(公告)日：2001-05-08

申请号：US09315645

申请日：1999-05-20

申请人： Larry K. Maier ,  Timothy F. Cilano ,  Fred D. Kelley ,  Frank D. Manioci ,  Diana C. Petranek ,  Michael Schild

发明人： Larry K. Maier ,  Timothy F. Cilano ,  Fred D. Kelley ,  Frank D. Manioci ,  Diana C. Petranek ,  Michael Schild

IPC分类号： G03C183

CPC分类号： G03C1/7954 ,  G03C1/795 ,  G03C1/832 ,  G03C2200/43

摘要： A silver halide light sensitive photographic element is disclosed comprising a polyethylene terephthalate film base, at least one light sensitive silver halide-containing emulsion layer, an antihalation undercoat layer, and a process-surviving antistatic backcoat, wherein the polyethylene terephthalate film base has been formed by drafting a cast resin at a stretch ratio of at least 3.4, tentering at a stretch ratio of at least 3.4, and heat-setting at an actual heat-set temperature of at least 216° C. In accordance with preferred embodiments of the invention, the polyethylene terephthalate film base of the photographic element is formed by: (a) casting a molten polyethylene terephthalate resin in a machine direction onto a casting surface to form a continuous sheet, (b) drafting the sheet by stretching in the machine direction at a stretch ratio of from 3.4 to 4, and at a temperature ranging from 70 to 130° C., (c) tentering the sheet in the transverse direction by stretching at a stretch ratio of from 3.4 to 4, and at a temperature ranging from 70 to 130 C., (d) heat-setting the tentered sheet at an actual temperature sensed by the sheet of at least 216° C., and (e) cooling the heat-set sheet without substantial detentering to obtain a stretched, heat-set polyethylene terephthalate film.

摘要翻译： 公开了一种卤化银感光照相材料，其包括聚对苯二甲酸乙二醇酯膜基材，至少一种含有感光性卤化银的乳剂层，防光晕底涂层和工艺存在的抗静电背涂层，其中形成了聚对苯二甲酸乙二醇酯膜基材 通过以至少3.4的拉伸比拉伸浇注树脂，以至少3.4的拉伸比拉伸，并且在至少216℃的实际热定型温度下进行热定型。根据本发明的优选实施方案 照相元件的聚对苯二甲酸乙二醇酯膜基材通过以下方法形成：（a）在机器方向上将熔融的聚对苯二甲酸乙二醇酯树脂浇铸到铸造表面上以形成连续片材，（b）通过沿机器方向拉伸来拉伸片材 拉伸比为3.4至4，温度范围为70至130℃，（c）通过拉伸在横向上将片材拉伸为 拉伸比为3.4至4，温度为70至130℃，（d）将片状物在由片材感测到的实际温度下至少216℃进行加热，（e）冷却 该热定型片没有大量的滞留，以获得拉伸的热固性聚对苯二甲酸乙二醇酯膜。