Patent ID: 7413695
Filing Date: 2008-08-19
Classification: B29C

Abstract:
1. A method of vacuum assisted resin transfer molding, comprising: forming a resin transfer assembly by positioning a dry fiber preform on a tool, positioning a second tool on a portion of the dry fiber perform, sealing at least a portion of the dry fiber preform and the second tool in a vacuum bag, rigidly fixing an external locating fixture to the second tool through a hole in the vacuum bag and positioning the second tool within a tight tolerance; positioning the resin transfer assembly in an autoclave; infusing the resin into the dry fiber perform through a resin inlet line; vacuum pressurizing a resin outlet line and bleeding resin out of the fiber preform concurrent with pressurizing the resin inlet line; detaching the resin inlet line; and pressurizing the autoclave and bleeding additional resin out of the fiber preform.