Patent ID: 6910422
Filing Date: 2005-06-28
Classification: D21H,F42B

Abstract:
1. A method for producing a combustible cartridge case for cartridge ammunition, comprising the steps of producing an aqueous pulp containing nitrocellulose and cellulose fibers; creating a raw felt from the pulp by draining the fiber material on a sieve; then compacting the raw felt into a final shape; and, before the step of creating the raw felt, adding a polymer substance having a hydrophilic character as an additive to the aqueous pulp, wherein the additive is at least one selected from the group consisting of starches, glucomannan, and mannogalactan, wherein the additive possesses at least one substituent selected from the group consisting of OH, NH 2 and any another functional group which either will form chemical bonds and/or (ii) engage in intermolecular interaction with the cellulose or nitrocellulose molecules.