Browse Prior Art Database

Lift Off Transfer Particulate Removal

IP.com Disclosure Number: IPCOM000052508D
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Bushkosky, RR: AUTHOR [+2]

Abstract

Removal of particulate contamination from unfired MLC greensheets or other surfaces which are difficult to clean conventionally is improved. The method involves applying a plastic substrate coated with an adhesive (DUREPOLY*) to the surface of the greensheet. When the adhesive coated plastic substrate is removed, it lifts off any particulate matter which was on the surface.

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Lift Off Transfer Particulate Removal

Removal of particulate contamination from unfired MLC greensheets or other surfaces which are difficult to clean conventionally is improved. The method involves applying a plastic substrate coated with an adhesive (DUREPOLY*) to the surface of the greensheet. When the adhesive coated plastic substrate is removed, it lifts off any particulate matter which was on the surface.

Methods used to clean material of the above type are either ineffective or prone to damaging the fragile greensheet. This technique uses a DUREPOLY coated mylar, acetate, or similar film. The DUREPOLY coating (D-4 polymer) has a slight tackiness to it. The coated film is applied (coating side down) to the greensheet (or other surface) to be cleaned or protected from debris. The film may be left sandwiched between greensheets to protect it until the next processing step. During this time, the DUREPOLY will "cold flow" slightly around particulate matter. When the coated film is removed, it will also remove any particulate from the greensheet. This method may also be used for immediate cleaning by applying slight pressure to the film and then removing it. * Trademark of Dureco Corp., Boston, Mass.

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