METHOD OF PRODUCING TUBULAR PRODUCTS FROM COMPOSITE MATERIALS AND DEVICE TO THIS END Russian patent published in 2009 - IPC B29C53/56 B29D23/00 

FIELD: process engineering.

SUBSTANCE: filler is impregnated with polymer binder and wound on form-building mandrel. Polymer binder with filler is solidified to allow regular descent of product from aforesaid mandrel fixed in cantilever. Filler represent threads and/or roving. In winding on aforesaid mandrel, first a solid layer with longitudinal orientation of threads or roving is wound and, simultaneously, a solid layer with transverse orientation of threads or roving is wound. Longitudinal layer is laid by continuous drawing threads and/or roving through spreading arrangement along form-building mandrel via squeezing spinneret. Transverse layer of threads and/or roving is wound directly at the squeezing spinneret outlet. Polymer binder polymerisation conditions is selected to allow solidification of product at the form-building mandrel outlet. Product descent is performed by drawing device. Proposed device comprises also filler feed unit, impregnating bath with polymer binder and device to arrange the filler. The latter represents at least one unit consisting of arrangement ring, squeezing spinneret and swivel arranged aligned with the form-building mandrel. Aforesaid swivel revolves around form-building axle. Note here that each aforesaid device is furnished with impregnating bath. Note also that product descent device represents drawing device fitted behind polymerisation chamber.

EFFECT: higher strength properties, simpler design and expanded performances.

7 cl, 1 dwg