Flat lightweight member and method of producing the same
AssigneeToray Industries, Inc.
InventorsShogo Matsushima, Yusuke Tsumura, Akihiko Nishizaki
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Abstract
A flat lightweight member includes fiber reinforced plastics and having excellent mechanical properties of an end portion and excellent adhesiveness between a core layer and a skin layer as well as good appearance quality and excellent producibility, the flat lightweight member includes a skin layer including a braiding material and a matrix resin, a separation layer having a bag shape and being present inside the braiding material, and a mixture of a matrix resin and a thermally expandable material, the mixture being present inside the separation layer.
Claims11
A flat lightweight member comprising:
- a skin layer including a braiding material and a matrix resin;
- a separation layer having a bag shape and present inside the braiding material;
- and
- a mixture of a matrix resin and a thermally expandable material, the mixture present inside the separation layer;
- wherein
- the braiding material includes a plurality of fiber strands serving as central yarns arranged in parallel in a same direction and a fiber strand serving as a plaited yarn intersecting the central yarns, and
- a weight per unit length of one of the fiber strands serving as the central yarns used in at least one end region of the flat lightweight member is smaller than a weight per unit length of one of the fiber strands serving as the central yarns used in a central region of the flat lightweight member.
Dependencies are inferred from the claim text.