Patent ID: 11872189
Assignee: CORNING INCORPORATED
Field: Materials, metallurgy (Chemistry)
Classification: CPC A  B  C  Y | IPC A  B  C

Claim 41:
42. A method of making a coated pharmaceutical container, the method comprising the steps of:
forming a glass tube;
forming the glass tube into a pharmaceutical container comprising an interior surface and an exterior surface, wherein the pharmaceutical container comprises a glass composition that has Class HGA1 hydrolytic resistance when tested according to the ISO 720 testing standard;
applying a coating to the exterior surface but not on any portion of an interior surface of the pharmaceutical container, wherein the coating comprises a polymer and wherein the coating is a low-friction coating; and
subjecting the pharmaceutical container to a lyophilization condition, wherein:
the coating has a coefficient of friction that does not increase by more than 30% after the lyophilization condition, wherein the coefficient of friction is a maximum coefficient of friction measured relative to a second pharmaceutical container in a vial-on-vial testing jig under a normal load of 30 N, the second pharmaceutical container formed from the same glass composition and comprising the same coating and subjected to the same environmental conditions prior to measurement of the coefficient of friction;
the coated pharmaceutical container is thermally stable after heating to a temperature of at least 260° C. for a time period of 30 minutes; and
the applying the coating comprises a dipping process, a spraying process, or both.