论述了为减轻车辆重量和提高旅客乘车舒适性而进行的夹层材料的研制、试用情况，重点介绍了德国Duewag公司机车车辆轻型构件的生产现状。一般可采用两种解决方法；使用重量较轻的材料和采用夹层结构。位于德国杜塞尔多夫市的Duewag公司的“塑料制品”部多年来一直采用这两种方法，当然，这两种方法也可结合使用。 The development and application of sandwich materials to reduce vehicle weight and ride comfort are discussed. The production status of lightweight parts of rolling stock in Germany duewag is emphatically introduced. Two solutions are generally available; lighter weight materials and sandwich structures are used. Duewag’s plastic products division in Düsseldorf, Germany, has been using both of these methods for years, and of course the two methods can be combined.