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Method and apparatus for producing dry preform for composite material

  • US 20040134593A1
  • Filed: 05/28/2003
  • Published: 07/15/2004
  • Est. Priority Date: 01/14/2003
  • Status: Active Grant
First Claim
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1. A method for producing a dry preform for a composite material for use as a structural material, comprising the step of before or after unifying a reinforcing filament assembly including a first fiber reinforcement layer and a second fiber reinforcement layer, deforming the reinforcing filament assembly in and/or out of plane to form the dry preform with a complex cross-sectional shape, the first fiber reinforcement layer formed by stringing a first set of parallel strands of fiber reinforcement over a part or all of the plane within any shape along a predetermined axis contained within the plane, the second fiber reinforcement layer formed by stringing a second set of parallel strands of fiber reinforcement over the plane of the shape at an angle with respect to the axis.

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