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Laser Stripping of Polymer Coatings

IP.com Disclosure Number: IPCOM000061966D
Original Publication Date: 1986-Aug-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Lin, F: AUTHOR [+3]

Abstract

Polymer coatings are widely used in storage technology, for example, as binders for magnetic media, for planarizing purposes, as photosensitive substances for generating servo-patterns and storing information and, finally, they are extensively used for overcoating applications.

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Laser Stripping of Polymer Coatings

Polymer coatings are widely used in storage technology, for example, as binders for magnetic media, for planarizing purposes, as photosensitive substances for generating servo-patterns and storing information and, finally, they are extensively used for overcoating applications.

For recycling substrate applications, it is necessary to strip the polymer coating from either the substrate or the active layer. A method has now been found to remove polymer coatings while avoiding undesirable temperature effects and complex processing. An ultraviolet laser such as an excimer laser is utilized to photodegrade the polymer layer which is removed by subsequent volatization or by a simple cleaning procedure. This light-induced degradation has the advantage that the absorption process is confined within the coating material. Furthermore, the energy deposited on said absorbing layer is below the damage threshold of the substrate.

Disclosed anonymously.

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