Foamed plastic insulated wire and method for producing same
AssigneeSumitomo Electric Industries, Ltd.
InventorsMasso Yuto, Yoichi Suzuki
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Abstract
A foamed plastic insulated wire having a foamed plastic material insulation layer formed over a conductor. The plastic material includes at least one component having a swelling ratio greater than 55%, and the component comprises at least 20% by weight of the insulation layer. The insulated wire is produced by adding a blowing agent such as a chemical blowing agent and an inert gas and extruding the mixture over a conductor.
Claims6
A foamed plastic insulated wire comprising a foamed plastic material insulation layer formed over a conductor, said plastic material consisting essentially of a foamed low density polyethylene made from (a) a foamable low density polyethylene having a melt flow swelling ratio greater than 55%, and (b) a chemical blowing agent, an inert gas blowing agent, or a combination thereof, said foamed low density polyethylene comprising at least 20% by weight of said insulation layer, and having a cell size of 50 microns or less.
Dependencies are inferred from the claim text.