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US 9,770,844 B2Granted
Fibre reinforced composites
AssigneesHexcel Composites Limited, Hexcel Holding GmbH
InventorsJohannes Moser, Philip Hadley
Life of this patent
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Abstract
A molding material comprising a fibrous reinforcement layer and a curable resin matrix. The fibrous reinforcement layer comprises a non-woven fabric comprising a single layer of unidirectional tows arranged at an angle greater than 0° in relation to the lengthwise direction of the fabric and a support structure for maintaining the arrangement of the tows.
Claims17
A two layer molding material having a lengthwise direction, said two layer molding material comprising:
- a first layer of dry unidirectional fibers wherein said dry unidirectional fibers are oriented in a direction that is from −30° to −45 with respect to said lengthwise direction, said first layer of dry unidirectional fibers being held together with stitching yarns that extend in said lengthwise direction;
- a second layer of resin impregnated unidirectional fibers wherein said resin impregnated unidirectional fibers axe oriented in a direction that is from +30° to +45 with respect to said lengthwise direction, said second layer of impregnated unidirectional fibers being held together with stitching yarns that also extend in said lengthwise direction;
- and
- a curable resin that impregnates said second layer of resin impregnated unidirectional fibers to form a resin matrix therein.
1 more element
Dependencies are inferred from the claim text.