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US 10,072,362 B2Granted
Method for making a polymer-sheathed multi-filamentary strand
AssigneePascale Industries, Inc.
InventorWillorage Rathna Perera
Life of this patent
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Abstract
A polymer-sheathed multi-filamentary strand for use in braided covers for wiring harnesses intended for use in challenging embodiments comprises a core of glass filaments wrapped in an aramid yarn, and sheathed in a siloxane-modified polyetherimide polymer. Shielding against electromagnetic interference may also be provided.
Claims5
A method for manufacturing a polymer-sheathed multi-filamentary strand for use in manufacture of braided covers for wiring harnesses, comprising the steps of:
- preparing an inner core comprising a multi-filamentary yarn of glass filaments;
- preparing a multi-filamentary yarn of aramid filaments;
- wrapping said multi-filamentary yarn of aramid filaments around said multi-filamentary yarn of glass filaments at a rate so as to leave a substantial fraction of the surface of said multi-filamentary yarn of glass filaments exposed;
- and
- extruding an outer sheath of a siloxane-modified polyetherimide polymer over the aramid-wrapped multi-filamentary yarn of glass filaments, so that said polymer is adhered to the surface of the glass filaments and forms a sheath over said aramid-wrapped multi-filamentary yarn of glass filaments.
2 more elements
Dependencies are inferred from the claim text.