B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/773
B29C 47/02 (2006.01) C07C 53/126 (2006.01) G02B 6/44 (2006.01) H01B 3/20 (2006.01) H01B 7/285 (2006.01) H01B 13/32 (2006.01)
Patent
CA 2006375
ABSTRACT A METHOD FOR THE LONGITUDINAL SEALING OF CABLES A method for the longitudinal sealing of cables wherein a hydrophobic liquid and later on solidifying substance is applied on the cable conductor prior to the extrusion of a jacket of synthetic material on said conductor by means of an extruder, wherein said substance includes a liquid suitable to be gelled, an organic technical gelling agent being added to said liquid, and said substance in its initial gelling phase is applied to said conductor at a concentration and/or a composition under a relative speed with respect to said conductor such that by a viscosity decreasing effect caused by shear forces said substance substantially wets said conductor under substantially filling up its interstices that, however, the substance immediately after its application is subject of a viscosity increase after omission of the shear forces so that it substantially sticks to said conductor.
Friedrich Jurgen Detlef
John Gunther
Minnesota Mining And Manufacturing Company
Smart & Biggar
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