一、概述聚脂簿膜也称涤纶簿膜(以下简称簿膜),是用聚脂树脂制成,簿膜原是为绝缘和电影片基提供材料,目前绘图所用簿膜表面已经加工处理,但产品本身没有考虑高温后的热缩变形。以簿膜作为绘图材料的历史并不长,而簿膜用于铁路航测制图更是近几年的事情。为使簿膜在绘图工作中发挥更大的作用,取其长处,避其短处,必须对簿膜的概况有个 First, an overview Polyester film, also known as polyester film (hereinafter referred to as film), is made of polyester resin, the film is the original film and film for the insulation film to provide the material used in the current drawing surface has been processed film, However, the product itself does not consider the thermal deformation after high temperature. The book film as a drawing material history is not long, and book film for railway aerial mapping is more in recent years. In order to make the book film play a greater role in the drawing work, to take advantage of its strengths, to avoid its shortcomings, the film must have a profile