Patent ID: 9073256
Filing Date: 2015-07-07
Classification: B29C

Abstract:
1. A method of manufacturing a composite material part from a preform of fibers pre-impregnated with resin, delimited by a lower surface, an upper surface, and a peripheral flank, said method comprising: laying said preform on a laying surface of a tool with a peripheral shoulder delimiting a zone whose dimensions are greater than those of the preform so as to house said preform, said peripheral shoulder comprising a support surface spaced apart by a value H from the laying surface; covering said preform with a lining comprising a conforming plate delimited by a peripheral edge which extends beyond the peripheral flank of the preform over an entire periphery of the preform, said conforming plate and said peripheral shoulder having such dimensions that a lower surface of the peripheral edge of the conforming plate faces the support surface of the shoulder; using shims calibrated to position the conforming plate, said shims having a thickness substantially equal to a contraction value of the preform, said shims being arranged between the support surface of the peripheral shoulder and the peripheral edge of the conforming plate; removing said calibrated shims; arranging sealing means connecting the conforming plate and the tool all around the preform; and polymerizing said preform.