ASSEMBLY AND METHOD FOR MANUFACTURING COMPOSITE PIPES

    公开(公告)号:US20240336021A1

    公开(公告)日:2024-10-10

    申请号:US18294927

    申请日:2022-08-03

    申请人: Itrec B.V.

    摘要: Moulding a composite pipe of fibre reinforcement material and a thermosetting resin that shrinks upon curing includes wrapping fibre reinforcement material about the tubular resilient sleeve of a mandrel in a non-expanded state of the sleeve. The mandrel includes an internal support structure for the sleeve which is reversibly expandable in diameter between the non-expanded state. The sleeve is internally supported by the internal support structure and an expanded state by application of an internal pressure to the sleeve. The mandrel with the fibre reinforcement material wrapped about the sleeve is accommodated in a bore of a mould. Seal members provide a closed annulus that can be evacuated. A thermosetting resin that shrinks upon curing is introduced into the closed annulus. A pressurizing fluid is supplied to the mandrel to internally pressurize the sleeve to cause diametrical expansion into the expanded state thereof whilst curing of the thermosetting resin.

    Method for manufacturing structure and structure

    公开(公告)号:US12083752B2

    公开(公告)日:2024-09-10

    申请号:US17636189

    申请日:2020-08-21

    摘要: Provided are a method for manufacturing a structural body and a structural body, the structural body formed of FRP and having a high degree of freedom in cross-sectional shape even at a low cost. The method for manufacturing a structural body includes a winding step of forming a cylindrical laminate body LM by winding a plurality of composite materials including reinforcing fibers and an uncured thermosetting resin around a hollow cylindrical core member CY; a compressing step of winding a tape or film around an outer circumference of the laminate body LM and compressing the same; a preheating step of heating the laminate body LM until a state prior to complete curing of the thermosetting resin; and a main heating step of arranging the laminate body LM around which the tape or film is wound and the cylindrical core member in a molding die and pressing the same to thereby heat the laminate body LM until the thermosetting resin is completely cured while deforming the cylindrical core member CY to a non-circular cross-sectional shape. Thereby, a structural body in which the cylindrical core member CY and the laminate body LM are integrated can be formed.

    METHOD FOR PRODUCING COATED FIBER-REINFORCED PLASTIC

    公开(公告)号:US20240217143A1

    公开(公告)日:2024-07-04

    申请号:US18289097

    申请日:2022-05-06

    申请人: TEIJIN LIMITED

    IPC分类号: B29C37/00 B29C70/46 B29C70/76

    摘要: Provided is a method for applying pressure to a coating material and a fiber-reinforced plastic using a male-female pair of upper and lower molds and producing a coated fiber-reinforced plastic, wherein: the fiber-reinforced plastic includes at least a first surface A, a second surface B, and an end surface C connecting to the first surface A and the second surface B; the first surface A and the second surface B each face separate molds when pressure is applied to the fiber-reinforced plastic using the male-female pair of upper and lower molds; from the start to the end of pressure application, the coating material first comes into contact with at least part of the first surface A, and then the coating material comes into contact with at least part of at least one of the second surface B and the end surface C, whereby the fiber-reinforced plastic is coated; and any of the two surfaces and the end surface of the fiber-reinforced plastic are coated within the mold through the method for producing a coated fiber-reinforced plastic.

    REINFORCING MEMBER, STRUCTURAL MEMBER, AND METHOD OF MANUFACTURING THE SAME

    公开(公告)号:US20240198608A1

    公开(公告)日:2024-06-20

    申请号:US18541953

    申请日:2023-12-15

    申请人: NIKKISO CO., LTD.

    IPC分类号: B29C70/46 B29D99/00

    CPC分类号: B29C70/46 B29D99/0014

    摘要: A reinforcing member includes a plate-shaped member that is made of a fiber-reinforced resin in which a continuous fiber is used as a reinforcement fiber and that has a first surface and a second surface. The plate-shaped member includes an outer circumferential portion that defines an outer edge of the plate-shaped member, a convex portion that is convex on a side of the first surface in an area inside the outer circumferential portion, and a plurality of concave portions that are concave on the side of the first surface in an area inside the convex portion.