Browse Prior Art Database

Restoration of Encapsulated Core Matrices

IP.com Disclosure Number: IPCOM000075048D
Original Publication Date: 1971-Jul-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Rahemba, FJ: AUTHOR

Abstract

Restoration of used magnetic core memory modules begins with stripping of the coating medium (e.g. EPON*/AROCLOR**) which serves as an encapsulant. The stripping solvent must selectively remove the encapsulant without damaging other coatings serving as insulation between wires (e.g. between Write and Sense lines). Methyl acrylate provides such selective stripping quickly and consistently.

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Restoration of Encapsulated Core Matrices

Restoration of used magnetic core memory modules begins with stripping of the coating medium (e.g. EPON*/AROCLOR**) which serves as an encapsulant. The stripping solvent must selectively remove the encapsulant without damaging other coatings serving as insulation between wires (e.g. between Write and Sense lines). Methyl acrylate provides such selective stripping quickly and consistently.

The stripping bath (composition: pure methyl acrylate) is operated at room temperatures under a well ventilated hood. Core frames to be stripped are immersed for 30-45 seconds and then rinsed by a 30 second spray of water. Final drying is accomplished either in a forced air jet or baking oven at 90 degrees F for no less than 10 minutes. *Trademark of Shell Chemical Co. **Trademark of Monsanto Co.

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