Method for producing hollow composite articles by

专利名称：Method for producing hollow composite

articles by winding/laying down on anexpansible mandrel

发明人：Jean-Louis Darrieux,Christian

Picosson,Hugues Canfranc

申请号：US08/253056申请日：19940602公开号：US05571357A公开日：19961105

摘要：Method for embodying hollow articles made of composite material including atleast one access orifice via winding/laying down fibers on an expansible mandrel, theresulting articles and a recoverable and removable mandrel. The method includes placingpreimpregnated fibers on an expansible, extractable mandrel having a longitudinal axisby at least one of winding and laying down the preimpregnated fibers on the mandrel,the placing of circumferential fibers of the preimpregnated fibers comprising placing thecircumferential fibers at an angle to approach or reach 90° with respect to the

longitudinal axis and to form on the mandrel a sinuous line and/or plural, discontinuouselements, so as to enable the preimpregnated fibers to be expanded circumferentiallyduring radial expansion of the mandrel; and expanding the mandrel inside a shaper whilepolymerizing the preimpregnated fibers.

申请人：SOCIETE ANONYME DITE AEROSPATIALE SOCIETE NATIONALE INDUSTRIELLE

代理机构：Greenblum & Bernstein PC.

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