SECTION FROM COMPOSITE MATERIAL WITH CORE AND DEVICE FOR ITS MANUFACTURE Russian patent published in 1996 - IPC

FIELD: manufacture of sections from composite materials with core. SUBSTANCE: section from composite material with core includes separately formed shell from fibrous material in which is placed separately supplied material of core and resin binding them. Shell material is manufacture from, at least, one layer of cloth which is changed in shape in compliance with the manufactured article. Core material is placed in this shell by air stream to ensure, at least, its partial diffusion through shell cloth to molding die. Materials forming core contain ground substance. The latter has particles of the same size. The device for manufacture of the section has guiding members, members for separate supply of material of core and building resin to molding die. Guiding members for directing, at least, one layer of shell of cloth are made in form of profiled member whose outer varies from inlet to outlet and internal channel with cross-section similar to that of the article but larger in size. Member supplying core material to channel of profiled member is made in form of air blower for blowing particles of this material by means of air current. Guiding member is installed in a spaced relation to molding die. Device is furnished with additional die installed before molding die. Additional die cross-section is similar to that of the article but larger in size to ensure preliminary molding of section in molding channel. EFFECT: higher efficiency. 6 cl, 8 dwg