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Foamed Air Bearing Cylinder

IP.com Disclosure Number: IPCOM000097580D
Original Publication Date: 1961-Mar-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Wood, RN: AUTHOR

Abstract

This is a process for making a relatively rigid cylinder having an external surface suitable for magnetic recording.

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Foamed Air Bearing Cylinder

This is a process for making a relatively rigid cylinder having an external surface suitable for magnetic recording.

In this process a cylindrical mold of the desired size is selected and a strip of magnetic recording tape is provided. The tape consists of a Mylar backing with a magnetic coating. The tape is accurately fitted to the internal surface of the mold with the magnetic coating toward the center of the mold. A mandrel is inserted in the mold and a plastic foam material is poured or buttered into the annulus between the mandrel and the tape.

The mold is then capped and the foamed plastic is cured by heating. The foamed plastic cylinder is then removed from the mold and the Mylar backing is stripped from the cylinder. The magnetic coating adheres to the cylinder because of the greater adhesion properties of the plastic foam.

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