Browse Prior Art Database

Saturated Vapor Doctor Blade Assembly

IP.com Disclosure Number: IPCOM000080769D
Original Publication Date: 1974-Feb-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

Nufer, RW: AUTHOR [+2]

Abstract

The high-vapor pressures of solvents used in certain fast drying binder systems for ceramic sheet casting, cause sheet cracking and many major surface imperfections associated with the premature drying of the ceramic slurry, prior to traveling under the doctor blade.

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

Saturated Vapor Doctor Blade Assembly

The high-vapor pressures of solvents used in certain fast drying binder systems for ceramic sheet casting, cause sheet cracking and many major surface imperfections associated with the premature drying of the ceramic slurry, prior to traveling under the doctor blade.

This problem is eliminated by the present illustrated design wherein a doctor blade assembly is enclosed, so as to provide a chamber over the ceramic slurry where a saturated atmosphere of solvent would exist. This prevents the skinning or premature drying of the slurry. By controlling the vapor over the slurry in this manner, excellent sheet can be cast. This technique may also lend itself to more uniform cast ceramic sheets for other binder systems, and thereby increase overall-yields. In conjunction with the saturated vapor dispenser, a constant hydrostatic pressure at the doctor blade may be attained by using the Mariotte principle. * Trademark of E. I. du Pont de Nemours & Co.

1

Page 2 of 2

2

[This page contains 2 pictures or other non-text objects]