On the basis of Springer's resin flow model, a criterion for maximum r
esin flow in autoclave curing is proposed. Validity of the criterion w
as proved for two resin systems (Fiberite 976 and Hercules 3501-6 epox
y resin). The parameter required for the criterion can be easily estim
ated from the measured resin viscosity data. The proposed criterion ca
n be used in establishing the proper cure cycle to ensure maximum resi
n flow and, thus, the maximum compaction.