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Contact Brush Cleaner for Particulate Removal From Screened MLC Green Sheets

IP.com Disclosure Number: IPCOM000041821D
Original Publication Date: 1984-Mar-01
Included in the Prior Art Database: 2005-Feb-03
Document File: 2 page(s) / 80K

Publishing Venue

IBM

Related People

Buchmann, AH: AUTHOR [+2]

Abstract

The arrangement provides for removal of unwanted paste particles from screened multilayer ceramic (MLC) green sheets without damaging areas. In operation, a single MLC green sheet is transported on an air track 1 into the brush cleaner station. Prior to entering this station, the MLC green sheet passes under a static elimination bar 2 to eliminate the retention of particles by electrostatic charges. The MLC green sheet is then transported through the brush cleaner station by utilizing the motion of the cleaning roller brushes 3. The velocity of the MLC green sheet through the station is 8"/sec. when the surface speed of the roller brushes, properly adjusted for cleaning, is set at 50"/sec.

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Contact Brush Cleaner for Particulate Removal From Screened MLC Green Sheets

The arrangement provides for removal of unwanted paste particles from screened multilayer ceramic (MLC) green sheets without damaging areas. In operation, a single MLC green sheet is transported on an air track 1 into the brush cleaner station. Prior to entering this station, the MLC green sheet passes under a static elimination bar 2 to eliminate the retention of particles by electrostatic charges. The MLC green sheet is then transported through the brush cleaner station by utilizing the motion of the cleaning roller brushes 3. The velocity of the MLC green sheet through the station is 8"/sec. when the surface speed of the roller brushes, properly adjusted for cleaning, is set at 50"/sec. This differential in velocity between the MLC green sheet and the cleaning roller brushes 3 creates the scrubbing action required for particle detachment. A reverse rotary brush 7 and lateral brushes 8 provide a reverse and linear scrubbing action which provides for particle detachment from trapped area not reached by the normally rotating brush 3 action. For proper cleaning, the brushes are adjusted by setting cams 4 such that .03" to .06" of the tips of the fibers of the brushes (e.g., sable hair) contact the green sheet or just graze the surface of the MLC green sheet. Air turbulence is created by air jets 5 which assist in particle detachment. Vacuum ports and manifolds 6 are used to remove particl...