US 12,466,142 B2
Compression resin transfer infusion methods
Jessica Offutt Fry, Charleston, SC (US); Heather Marie Wadsworth, Ladson, SC (US); David Earl Reed, Summerville, SC (US); Kevin Donald Gordon, Summerville, SC (US); Mark R. Brei, Ladson, SC (US); and Chloe E. Klusman, Ladson, SC (US)
Assigned to The Boeing Company, Arlington, VA (US)
Filed by The Boeing Company, Arlington, VA (US)
Filed on Nov. 3, 2023, as Appl. No. 18/501,423.
Prior Publication US 2025/0144895 A1, May 8, 2025
Int. Cl. B29C 70/48 (2006.01)
CPC B29C 70/48 (2013.01) 21 Claims
OG exemplary drawing
 
1. A method of compression resin transfer infusion comprising:
placing a dry preform with a thermoplastic veil onto a lower mold die;
placing an upper mold die over the lower mold die to create an infusion and cure tool having a sealed cavity holding the dry preform, the sealed cavity defining a gap, the gap corresponding to a cavity volume equivalent to an amount of resin to infuse the dry preform;
injecting resin into the gap of the sealed cavity while the infusion and cure tool is maintained at an infusion temperature;
lowering the upper mold die to infuse the dry preform to form a resin-infused preform;
curing the resin-infused preform within the infusion and cure tool to form a cured composite part, wherein curing occurs at a curing temperature higher than the infusion temperature; and
lowering a temperature of the infusion and cure tool after the curing from the curing temperature at a ramp down rate, wherein the curing temperature and the ramp down rate are selected to generate cavitation bubbles in the thermoplastic veil in the cured composite part.