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Title:
PROCESSING METHOD FOR ONE-STEP FORMING OF CONTINUOUS FIBER-REINFORCED COMPOSITE PIPE
Document Type and Number:
WIPO Patent Application WO/2023/103110
Kind Code:
A1
Abstract:
A processing method for one-step forming of a continuous fiber-reinforced composite pipe, belonging to the technical field of composite pipe processing. The method solves the existing problem of easy detachment between multiple composite layers of a pipe. The method comprises: wrapping the circumferential surface of an outer pipe (3) in several axial fiber layers formed by continuous fibers distributed along the axial direction of the outer pipe (3), and winding a winding fiber layer wound in the circumferential direction of the outer pipe (3) outside the axial fiber layer to form a continuous fiber-reinforced layer; enabling the continuous fiber-reinforced layer to move forward along the axial direction of the outer pipe (3), and to enter and continuously pass through a mold cavity (2c) from a gap between the inner peripheral wall of an outer mold sleeve (2a) of a forming mold (2) and the outer peripheral wall of the outer pipe (3); and compounding a molten thermoplastic material melt injected into the mold cavity (2c) with the fiber-reinforced layer continuously passing through the mold cavity (2c) to form a pipe blank, and cooling the pipe blank to obtain a corresponding composite pipe. The processing can be completed in a one-step manner, and the pipe has the advantage of high shear strength.

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Inventors:
HUANG JIAN (CN)
WANG PENGYUE (CN)
SUN HUALI (CN)
CHEN WEI (CN)
DING JIE (CN)
QIAN YANG (CN)
Application Number:
PCT/CN2021/141396
Publication Date:
June 15, 2023
Filing Date:
December 25, 2021
Export Citation:
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Assignee:
ERA CO LTD (CN)
International Classes:
B29D23/00; B29C48/09; B29C48/355; B29C70/34; B29C70/38; B29C70/52; B29C70/54; F16L9/14; F16L57/02
Foreign References:
CN114193805A2022-03-18
CN114193800A2022-03-18
CN114193730A2022-03-18
CN114193802A2022-03-18
CN114193803A2022-03-18
CN204879094U2015-12-16
CN109747185A2019-05-14
CN105003753A2015-10-28
CN107336448A2017-11-10
GB1447112A1976-08-25
CN206140969U2017-05-03
CN1411983A2003-04-23
CN101440899A2009-05-27
JPH05138751A1993-06-08
JPH09309140A1997-12-02
Attorney, Agent or Firm:
TAIZHOU FANGYUAN PATENT ATTORNEY FIRM (GENERAL PARTNERSHIP) (CN)
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