Paul D Borscheid

US Patent:

7354519, Apr 8, 2008

Filed:

Feb 2, 2004

Appl. No.:

10/770230

Inventors:

Steven A. Fank - Darwin MN, US
Kurt C. Swanson - Hutchinson MN, US
Paul D. Borscheid - Hutchinson MN, US
Kurt S. Kruckman - Glencoe MN, US

Assignee:

Hutchinson Technology Incorporated - Hutchinson MN

International Classification:

B32B 1/08

US Classification:

216 8, 216 9, 216 41, 216 50

Abstract:

A method for fabricating a tubular article having a wall structure defined by a selected pattern. The method includes the steps of providing a tube having an outer surface and an inner surface; coating the outer surface with first photosensitive resist; exposing the selected pattern portions of the coated outer surface; developing the first photosensitive resist coated on the outer surface; coating the inner surface with second photosensitive resist; and exposing the tube to an etchant to form a tubular article having the wall structure defined by the selected pattern. The second photosensitive resist is more brittle than the first photosensitive resist when the first and second photosensitive resist are dry. An apparatus for exposing a photosensitive resist-coated tube to laser. The device includes an elongated tubular member having an aperture extending through its wall.