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Micro-Miniature Dielectric Tube Process

IP.com Disclosure Number: IPCOM000047312D
Original Publication Date: 1983-Oct-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Modlo, RJ: AUTHOR [+3]

Abstract

A hairlike micro-miniature dielectric tubing is produced with small inside and outside diameters (ID, OD) by applying an uncured polyimide coating to a ductile wire mandrel with an OD compatible to the ID desired for the tubing and, after curing, the wire mandrel is stretched causing it to remain in an elongated state and resultant reduced diameter, thereby allowing the cured coating to be easily removed from the mandrel and become the dielectric tubing. As an example, a mandrel of copper wire and a coating of PYRE-M.L.* RC 5060 were used to produce dielectric tubing with an ID of approximately six mils and wall thickness of approximately one and one-half mils.

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Micro-Miniature Dielectric Tube Process

A hairlike micro-miniature dielectric tubing is produced with small inside and outside diameters (ID, OD) by applying an uncured polyimide coating to a ductile wire mandrel with an OD compatible to the ID desired for the tubing and, after curing, the wire mandrel is stretched causing it to remain in an elongated state and resultant reduced diameter, thereby allowing the cured coating to be easily removed from the mandrel and become the dielectric tubing. As an example, a mandrel of copper wire and a coating of PYRE-M.L.* RC 5060 were used to produce dielectric tubing with an ID of approximately six mils and wall thickness of approximately one and one-half mils. The process is particularly useful for making insulation tube sleeves for the probes of a high density multi-pin micro- probe tester such as, for example, that described in D. L. Dillman and R. P. May, "Micro-Probe," IBM Technical Disclosure Bulletin 24, 11B, 5941-5942 (April 1982). * Trademark of E. I. du Pont de Nemours & Co.

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