REINFORCED POLYMER TUBE AND METHOD OF ITS MANUFACTURE Russian patent published in 1998 - IPC

FIELD: polymer tubes for transportation of aggressive media. SUBSTANCE: tube includes framework located in monolith of polymer. Framework includes two layers of perforated strip located at spaced relation of long member between them which is coiled spirally. Method of manufacture of tube includes preliminary perforation of strip, continuous supply of it over spiral to mandrel, fastening of coils and potting the framework with polymer. After coiling the first layer, long member is wound at pitch lesser than width of strip of second layer. EFFECT: high loading capacity of tube. 3 cl, 4 dwg