METHOD OF MAKING COAT FILM ON PIPE LINE LINING

摘要

FIELD: manufacture, erection and repair of various pipe lines. SUBSTANCE: method consists in connecting the edges of coat film having longitudinal cut and inner layer made from nonwoven material and outer layer made from polymer film applied on inner layer in melted state. Prior to applying polymer film, surface of inner layer is subjected to fusion followed by reducing in rolls. EFFECT: improved quality of lining. 2 clm