Composite Materials
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United States of America Patent
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Issued Date -
Jan 6, 2011
app pub date -
Feb 11, 2009
filing date -
Feb 29, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A polyetheretherketone film is used in the consolidation of a prepreg so that the film becomes incorporated into the consolidated prepreg, defines an outer layer of the consolidated prepreg and therefore provides the consolidated prepreg with advantageous properties. In one embodiment, a film may be used as a bagging material. In this embodiment, prepreg is positioned in a mould to define a precursor of a composite material. A bagging film is positioned next to the prepreg and a vacuum is applied via port to evacuate the space between the prepreg and film and induction heating is used to cause the resin in the prepreg to melt. In addition, the film yields and draws and this stretched film will cover the prepreg and act as a bagging material. Another embodiment addresses the problem of insertion and/or removal of an inflatable bladder in the manufacture of hollow articles and utilizes a gas filled thermoplastic bag.
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