this film or non stick liner would be inserted in the inner surface of the tube during the weaving process this can be done by stopping the loom during weaving of the tubular section and inserting the film into the tube via access gained between warp yarns located between the already woven fabric and the beat up bar of the loom this insertion process would probably have to be repeated many times during the weaving process in order to line the inner surface of the tube once the film has been inserted on the inside surface of the tube the structure is sealed and the entire structure can be dip coated spray coated or coated by some other means such that the woven base fabric is impregnated with the desired coating the resin impregnated structure is cured to an extent such that via an opening cut in the tube surface the film can be removed the tube partially or totally inflated via pressurized air and the curing process completed if required the film serves to prevent the coating resin from adhering one inner surface of the tube to another inner surface of the tube another method for coating the tube is to dip coat or spray coat the entire structure without any provision being made for preventing the inner surfaces of the tube from contacting each other i e without lining the inner surface of the tube with a film or liner it is possible to weave a structure such that the coating does not pass completely through the fabric yet the coating penetrates the woven fabric such that the coating adheres to the fabric this approach allows one to coat the structure and create a coated tube without concern for the inner surfaces adhering to each other another approach.