Browse Prior Art Database

Accelerated Green Ceramic Sheet Drying

IP.com Disclosure Number: IPCOM000081308D
Original Publication Date: 1974-May-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 22K

Publishing Venue

IBM

Related People

Griesemer, JA: AUTHOR

Abstract

Subsequent to the casting of ceramic green sheet materials it is desirable to remove as much of the solvent as possible from the cast sheets, in order to insure dimensional stability when the sheets later are used for forming multilayer ceramic modules.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Accelerated Green Ceramic Sheet Drying

Subsequent to the casting of ceramic green sheet materials it is desirable to remove as much of the solvent as possible from the cast sheets, in order to insure dimensional stability when the sheets later are used for forming multilayer ceramic modules.

As illustrated in the figure, the present approach employs a continuous carrier 14 in order to cast a slurry 16 by a doctor blading technique, depicted at 18, onto the carrier 14. For certain purposes, improved drying of the cast ceramic green sheet is obtained, by using a differential thermal heating generator constituted by an infrared bank 20 comprising stages 22, 24 and 26. This arrangement is employed in combination with a hot plate 28, which applies heat to the under surface of the cast green sheet.

Each of the stages 22, 24 and 26 provide an increasing heating ambient to the upper surface of the cast ceramic green sheet. The hot plate 28 provides direct heating to the under surface of the ceramic cast green sheet, so as to uniformly evaporate the solvents contained in the ceramic cast green sheet toward the upper surface thereof.

The infrared multistage heating unit 20 then insures that maximum solvents are evaporated from the surface thereof in a graduated manner, so as to avoid cracking and blistering of the upper ceramic green sheet surface.

1

Page 2 of 2

2

[This page contains 1 picture or other non-text object]