Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Method of Depositing Pastes and Slurries

IP.com Disclosure Number: IPCOM000086233D
Original Publication Date: 1976-Aug-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

Foster, BJ: AUTHOR [+2]

Abstract

Pastes, slurries, and sealing liquids are deposited on surfaces with protrusions, cavities, and open pores being uniformly filled without voids or bubbles.

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

Method of Depositing Pastes and Slurries

Pastes, slurries, and sealing liquids are deposited on surfaces with protrusions, cavities, and open pores being uniformly filled without voids or bubbles.

An excess amount of material is flowed or spread onto the substrate surface to cover the whole surface. The substrate is held or put into a centrifuge container such that the centrifugal force is perpendicular to the substrate surface during spinning. The centrifugal force acting on the material deposited on the substrate, will cause the material to be forced into the surface, displacing any bubbles or trapped ambient, and will cause the excessive material to flow out over the edges and result in a leveling of the material remaining on the substrate surface.

The amount or thickness of material remaining on the surface is primarily a function of the centrifuge RPM and viscosity of the material, but other properties such as density and surface tension and time of spinning have a lesser affect.

The exact amount of material that should be flowed on the surface can be determined by experience to reduce the waste to a minimum. Due to the lateral flowing action during the spinning, the material will penetrate into and under any parts which are mounted on the surface.

1

Page 2 of 2

2

[This page contains 4 pictures or other non-text objects]