H - Electricity – 01 – B
Patent
H - Electricity
01
B
337/134, 18/771
H01B 3/30 (2006.01) B32B 27/00 (2006.01) B41M 1/30 (2006.01) H01B 3/44 (2006.01)
Patent
CA 1187956
ABSTRACT The printability of electrical insulation composed of polymers having low surface energy, e.g., flurocarbon polymers, is greatly improved by incorporating a suitable particulate filler in the polymer, and shaping the filled polymer under conditions which result in the surface of the shaped polymer having irregularities which correspond to the particles of the filler. Suitable fillers comprise particles having at least two dimensions in the range of 1 to 40 microns; glass fibers are particularly satisfactory. In this way extruded insulating polymeric jackets for electrical components, e.g., strip heaters and wire and cable, can be marked by conventional methods, e.g., offset printing.
412218
Fetherstonhaugh & Co.
Raychem Corporation
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