FLEXIBLE STRETCH HOSE HAVING HOLLOW REINFORCING COILS AND PROPERTIES ENHANCED BY ANNEALING

    公开(公告)号:US20240102586A1

    公开(公告)日:2024-03-28

    申请号:US18529904

    申请日:2023-12-05

    申请人: GLOBALMED, INC.

    IPC分类号: F16L11/112 B29D23/18

    摘要: A method of forming a flexible, stretchable, crush resistant axially extending hose includes: providing coils entirely of thermoplastic material to form a continuous and hollow helix; providing a thin, narrow, elongate web of thermoplastic material that extends between adjacent coils of the helix and has edge regions welded to adjacent ones of the coils to form a single continuous wall with the web having a centrally located fold situated between adjacent ones of the coils; and subjecting the hose to an annealing process while axially compressing the hose so that molecules of the thermoplastic material forming the coils of the helix and the thin elongate web are relaxed such that stress is substantially absent from the hose when the coils of the helix are close together.