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Design and Fabrication of an On-Line Consolidation Facility for Thermoplastic Composites

Polymer & Composites Group Technische Universität Hamburg-Harburg

Klaus Friedrich

Polymer & Composites Group Technische Universität Hamburg-Harburg

Mark Cirino

Center for Composite Materials University of Delaware Newark, DE 19716

R. Byron Pipes

Center for Composite Materials University of Delaware Newark, DE 19716

An experimental apparatus that utilizes continuous fiber reinforced ther moplastics to wind rings and short tubes has been developed. Termed an on-line consoli dation facility, preimpregnated tow is consolidated while the ring is being wound. The three most important parameters for the consolidation process are time, temperature, and pressure, and the facility is designed to establish their optimum combination. Therefore, each component of the apparatus provides maximum flexibility and variability in terms of these parameters. This article describes the basic concept of the process and then shows how the concept can be realized.

The technique for heating the impregnated tow utilizes infrared radiation. However, ad ditional heat sources are used to provide optimum temperature control at the nip point.

Finally, several types of preimpregnated tow are used to produce samples that prove the feasibility of the process and establish acceptable ranges on the parameters.

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