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Coated recoverable articles

  • US 4,732,412 A
  • Filed: 12/19/1986
  • Issued: 03/22/1988
  • Est. Priority Date: 10/27/1981
  • Status: Expired due to Term
First Claim
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1. An assembly for sealing an end of a joint between two insulated pipes from which the insulation has been removed at the ends thereof exposing uninsulated end portions, said assembly comprising:

  • (a) a hollow casing arranged to surround the uninsulated portions of pipe, overlapping the pipe insulation at each side of the joint; and

    (b) a sleeve comprising a heat-recoverable polymeric sheet having;

    (i) a layer of a heat-activatable adhesive at two first regions of a principle surface thereof, arranged so as in use to provide substantially annular bonds between the polymeric sheet and the casing and between the polymeric sheet and the insulation of one of said pipes, so as to interconnect the casing and the pipe insulation, and(ii) a layer of a sealant at a second region of the said principle surface, said second region being between the two said first regions, said sealant being distinct from said heat-activatable adhesive and being arranged in use to overlap the casing and the pipe insulation so as to provide substantially annular, flexible seals between the polymeric sleeve and the casing, and the polymeric sleeve and the insulation, thereby providing a flexible seal between the casing and the insulation which can accommodate relative movement between the casing and the insulation.

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