Mold release technique for solid propellant casting tooling

USH1111H · kind H · statutory invention registration

Assignee

• The United States of America as represented as the Secretary of the Air · US

Inventors

• William Frank Dunn · Austin, US
• Larry W. Poulter · Ogden, US

Key dates

• Grant date: Nov 3, 1992

Classification

• Technology area (CPC —): General

Abstract

Tooling for solid propellant casting consisting essentially of a shaped, filled polymer or copolymer article having an outer layer of cured polyvinyl butyral. The casting tooling is used extensively throughout the solid propellant industry to mold or form the solid propellant grain of rocket motors. The cured polyvinyl butyral layer provides improved mold release properties to the tooling.