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    METHOD OF SEALING A PIPE
    12.
    发明申请
    METHOD OF SEALING A PIPE 审中-公开

    公开(公告)号：US20190137028A1

    公开(公告)日：2019-05-09

    申请号：US16096842

    申请日：2017-04-25

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Ian Robinson ,  Wayne S. Jobling ,  Andrew R. Henry ,  Richard Yufeng Liu ,  Scott M. Fabozzi ,  Alexander J. Kugel ,  Mario A. Perez

    IPC: F16L55/165 ,  F16L55/163 ,  F16L55/18 ,  F16L58/10

    Abstract: The invention relates to a method for preparing a pipe for a continuous spray lining process, the method comprising the following steps: providing an inflatable packer (3); providing an expandable sleeve (4) with a conformable backing layer (5) and an adhesive layer (6); wrapping the expandable sleeve around the packer with the adhesive layer facing the outside; inflating the inflatable packer until it reaches a first diameter (D1), wherein the first diameter is smaller than the inner diameter (d) of the pipe section, thereby expanding the stretching sleeve, inserting the inflated packer with the expanded sleeve into the pipe (1, 2) until it reaches the pipe section to be sealed; and further inflating the packer until it reaches a second diameter (D2), thereby further stretching the expandable sleeve; wherein the second diameter is reached when the expanded sleeve touches the inner diameter (d) of the pipe section.

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