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Browse Prior Art Database

Lifting Ceramic Green Sheets

IP.com Disclosure Number: IPCOM000076712D
Original Publication Date: 1972-Apr-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 21K

Publishing Venue

IBM

Related People

Griesemer, JA: AUTHOR [+2]

Abstract

A soft, flexible sheet, such as a ceramic green sheet 10 is lifted by placing a tube 12 with a wide-flat flange 14 a short distance above the sheet and blowing a gas, such as air 16 through the tube.

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Lifting Ceramic Green Sheets

A soft, flexible sheet, such as a ceramic green sheet 10 is lifted by placing a tube 12 with a wide-flat flange 14 a short distance above the sheet and blowing a gas, such as air 16 through the tube.

The sheet is lifted toward the mouth of the tube, where the gas flow is highest and, consequently, the gas pressure is lowest. The gas coming out of the tube, on the other hand, pushes the sheet back (shown in phantom) before it touches the flange, resulting in an oscillation of the free-floating sheet. The oscillation tends to shake off any green sheets which might have stuck to the sheet being lifted and thus keep the sheet from floating off sideways when it is lifted. The oscillation also adds dimensional stability to the green sheet.

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