Ho Ming Tong, A. S. Sangani

Research output: Chapter in Book/Entry/PoemConference contribution


A model has been developed for the prediction of lay-up consolidation (i. e. , lay-up thickness, inter-spacings between prepregs and resin flow field) during the squeeze-flow lamination of circular prepreg lay-ups for the manufacture of printed circuit boards. This model allows for a time-dependent lamination temperature and pressure schedule, and the temperature non-uniformity across the thickness of the lay-up (which must be considered when a large number of prepreg layers is involved). The input parameters required by this model are both the cloth parameters (such as the yarn diameter and the pitch distances) and knowledge of resin viscosity as a function of time and temperature. While the former is usually available from the cloth manufacturer, the latter can be predicted from separate squeeze flow experiments for the neat resin using a thermomechanical analyzer. The lay-up thickness predictions provided by this model have been found to be in good agreement with experimental results obtained using a thermomechanical analyzer for the lamination of up to five epoxy prepreg layers.

Original languageEnglish (US)
Title of host publicationPolymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Material
Number of pages4
ISBN (Print)0841209855
StatePublished - 1986
Externally publishedYes

Publication series

NamePolymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Material
ISSN (Print)0743-0515

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Polymers and Plastics


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