Browse Prior Art Database

Cable Manufacture

IP.com Disclosure Number: IPCOM000094906D
Original Publication Date: 1965-Jul-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 28K

Publishing Venue

IBM

Related People

Hairabedian, B: AUTHOR [+2]

Abstract

Flat cable having an array of wires in a tape of dielectric material is made by thermally embedding the wires in the tape.

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Cable Manufacture

Flat cable having an array of wires in a tape of dielectric material is made by thermally embedding the wires in the tape.

This is accomplished without undue melting or decomposition of the tape by utilizing a dielectric which is thermoplastic. Heat is applied selectively, primarily to the wires while these are forced into place in the dielectric body.

Wires 10 to be embedded in dielectric tape 12 are passed through grooves 14 in heated blade 16, both for heating the wires and for locating them. Heated wires 10 and tape 12 are trained over cold roller 18 in an arcuate manner. Thus, hot wires 10 are first pushed by blade 16 and then pulled by the tension on wires 10 down into the body of tape 2. The heat which enables plastic displacement of the dielectric material comes mostly from wires 10 so that the main body of tape 12 remains relatively cool and undisturbed. The degree of heating of wires 10, process speed, and wire tension combine to control the depth to which wires 10 become embedded in dielectric 12.

Dielectric 12 tends to reflow into place over wires 10 so as to encapsulate them. However, to insure complete healing of the tape surface, blade 16 has portion 20 contacting the tape surface behind the point of entry to wires 10. Cold roller 18 adds to the heat sink capability of dielectric 12, helping to limit the penetration of wires 10 as well as dissipating of the heat applied by portion 20.

The heat can be applied to wires 10 in other w...