Male molding with oven vacuum bag prepreg

Thomas D. Juska, Jeffrey C. Hall, Yooku Tachie-Menson

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Oven Vacuum Bag (OVB) prepreg fabrication is an evolving process that can result in low cost, high quality composite structures.compared to vacuum assisted resin transfer molding (VARTM), material costs are higher but man-hour requirements are lower. Breakthrough innovations in prepreg materials for non-autoclave fabrication have resulted in the ability to fabricate low void content laminates using only a vacuum bag at 160 °F for consolidation. One of the advantages with OVB prepreg is the quality that can be attained by male molding on inexpensive NC-machined foam plugs. Male-molded parts are sometimes preferred since they reduce tooling and fit-up costs required to meet tight tolerances. Although male-molded parts typically have poor surface quality on the vacuum bag side, the characteristics of OVB prepreg can be used to improve this condition significantly. Since consolidation does not require resin flow through the surface, polished caul tools can be used directly against the prepreg. An evolving fabrication approach is described herein in which male-molded OVB prepreg is used in conjunction with caul tooling and surfacing films to produce a part with two molded surfaces.

Original languageEnglish (US)
Title of host publicationSAMPE Tech 2012 Conference and Exhibition
Subtitle of host publicationNavigating the Global Landscape for the New Composites
StatePublished - Dec 1 2012
EventSAMPE Tech 2012 Conference and Exhibition: Navigating the Global Landscape for the New Composites - North Charleston, SC, United States
Duration: Oct 22 2012Oct 25 2012

Publication series

NameInternational SAMPE Technical Conference


OtherSAMPE Tech 2012 Conference and Exhibition: Navigating the Global Landscape for the New Composites
Country/TerritoryUnited States
CityNorth Charleston, SC

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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