MULTI-LAYER INSULATED CONDUCTOR HAVING IMPROVED SCRAPE ABRASION RESISTANCE
First Claim
1. An insulated conductor comprising:
- an elongate conductor; and
a multi-layer insulation system havingan extruded first insulating layer comprising an aromatic thermoplastic material overlying the elongate conductor; and
an extruded second insulating layer comprising a perfluoropolymer in contact with the first insulating layer, wherein the first and second insulating layers are each of a wall thickness such that the multi-layer insulation system exhibits a scrape abrasion resistance that is at least 50% greater than the sum of the scrape abrasion resistance of the first and second insulating layers individually at that thickness when the scrape abrasion resistance is measured in accordance with a predetermined needle abrasion test.
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Accused Products
Abstract
An insulated conductor and method for making it are disclosed. The insulated conductor includes an elongate conductor and a multi-layer insulation system. The multi-layer insulation system has a first insulating layer including an aromatic thermoplastic material overlying the elongate conductor and a second insulating layer including a perfluoropolymer adjacent the first insulating layer. The first and second insulating layers are each applied to a thickness such that the multi-layer insulation system exhibits a scrape abrasion resistance that is significantly greater than sum of the scrape abrasion resistance of the first and second insulating layers individually at that thickness.
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Citations
19 Claims
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1. An insulated conductor comprising:
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an elongate conductor; and a multi-layer insulation system having an extruded first insulating layer comprising an aromatic thermoplastic material overlying the elongate conductor; and an extruded second insulating layer comprising a perfluoropolymer in contact with the first insulating layer, wherein the first and second insulating layers are each of a wall thickness such that the multi-layer insulation system exhibits a scrape abrasion resistance that is at least 50% greater than the sum of the scrape abrasion resistance of the first and second insulating layers individually at that thickness when the scrape abrasion resistance is measured in accordance with a predetermined needle abrasion test. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An insulated conductor comprising:
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an elongate conductor; and a two-layer insulation system having an extruded first insulating layer comprising PEEK overlying the elongate conductor and having an average wall thickness of about 0.003 inches; and an extruded second insulating layer comprising PTFE overlying and in contact with the first insulating layer and having an average wall thickness of about 0.003 inches.
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19. An insulated conductor comprising:
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an elongate conductor comprising a braided cable; and a two-layer insulation system having an extruded first insulating layer comprising annealed PEEK overlying the elongate conductor and having an average wall thickness of about 0.0055 inches; and an extruded second insulating layer comprising FEP overlying and in contact with the first insulating layer and having an average wall thickness of about 0.0085 inches.
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Specification