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US 10,767,022 B2Granted
Fiber wound body, fiber-reinforced resin material, and method for manufacturing fiber wound body
AssigneeKabushiki Kaisha Toyota Jidoshokki
InventorsRyohei Tsuji, Genki Yoshikawa, Shun Kuno, Ryuta Kamiya
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Abstract
This fiber wound body has a plurality of reinforcing fiber yarns wound around a winding axis, each of the reinforcing fiber yarns having a thickness gradient portion in which the fiber content is uniform along the longitudinal direction of the yarn and the thickness gradually changes.
Claims5
A fiber wound body comprising:
- reinforced fiber yarns wound about a winding axis, wherein
- each of the reinforced fiber yarns includes a gradual cross-section change portion, and
- the gradual cross-section change portion has a fiber content rate that is constant in a longitudinal direction of the yarn and has a cross section that gradually changes.
A method for manufacturing a fiber wound body, the method comprising:
- elongating each of reinforced fiber yarns having a cross section constant in a longitudinal direction of the yarn in one direction with a drafting device including roller groups;
- when elongating the reinforced fiber yarns in one direction, forming a gradual cross-section change portion having a fiber content rate that is constant in the longitudinal direction of the yarn and having a cross section that gradually changes by continuously varying a drafting rate of the drafting device to continuously change the cross section of the reinforced fiber yarns in the one direction;
- and
- obtaining a fiber wound body by winding the reinforced fiber yarns including the gradual cross-section change portions about a winding axis.
1 more element
Dependencies are inferred from the claim text.