Browse Prior Art Database

Application of Solvent Based Coatings to Yield Very Smooth Surfaces

IP.com Disclosure Number: IPCOM000094028D
Original Publication Date: 1966-May-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Raacke, KH: AUTHOR [+2]

Abstract

This method enables a very smooth surface to be obtained by the application of a solvent-based coating to a substrate. The use of either a spinning technique or an additional smoothing layer to accomplish that result is not required.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 1

Application of Solvent Based Coatings to Yield Very Smooth Surfaces

This method enables a very smooth surface to be obtained by the application of a solvent-based coating to a substrate. The use of either a spinning technique or an additional smoothing layer to accomplish that result is not required.

The solvent-based coating is deposited upon the substrate in the usual manner, but it is cured in such a way that its surface dries last. Heat is applied to the coating by transfer through the substrate. Thus, the coating is heated progressively from its interface with the substrate outwardly to the coating surface. The atmosphere in which the coating dries is regulated to contain a sufficient amount of solvent fumes for maintaining the surface of the coating soft until the interior of the coating has dried completely. This enables the surface to dry smoothly without premature skinning, which commonly causes the surface to be distorted by trapped bubbles or similar irregularities.

This coating technique is useful in preparing substrates for the reception of deposited magnetic films in data storage devices. Such films require base surfaces that are extremely smooth in order to avoid the type of anisotropy that is caused by surface irregularities.

1