Oystein Mikkelsen

US Patent:

60741929, Jun 13, 2000

Filed:

Sep 11, 1997

Appl. No.:

8/928006

Inventors:

Oystein Mikkelsen - Kissimmee FL

International Classification:

B29C 4700
B29C 5904
F28F 502

US Classification:

425327

Abstract:

A lenticular pattern forming roll, used for forming a lenticular screen, includes a chill roll and a lenticular sleeve positioned on the chill roll. The lenticular sleeve has a lenticular pattern formed on an outer surface for forming a corresponding lenticular pattern in a plastic sheet. The sleeve may be readily manufactured and transported to a desired location to be installed on the chill roll. The lenticular pattern forming roll may be readily used in combination with an extruder for extruding a hot plastic sheet to form the lenticular screen. The sleeve may also be removed from the chill roll and transported for resurfacing and without requiring transporting of the chill roll. The lenticular sleeve may preferably comprise a nickel-phosphorous composition defining at least a radially outermost portion of the sleeve in which the lenticular pattern is formed. More particularly, the nickel-phosphorous composition is preferably an amorphous nickel-phosphorous composition comprising nickel in a range of about 75 to 86 percent by weight, and phosphorous in a range of about 14 to 25 percent by weight.

US Patent:

60711108, Jun 6, 2000

Filed:

Sep 11, 1997

Appl. No.:

8/927940

Inventors:

Oystein Mikkelsen - Kissimmee FL

International Classification:

B29C 4700
B29C 5904
F28S 502

US Classification:

425327

Abstract:

A polishing roll, used for forming a smooth plastic sheet, includes a chill roll and a polishing sleeve positioned on the chill roll. The polishing sleeve has a polished outer surface for forming a corresponding smooth surface in a plastic sheet. The sleeve may be readily manufactured and transported to a desired location to be installed on the chill roll. The polishing roll may be readily used in combination with an extruder for extruding a hot plastic sheet to form the smooth plastic sheet. The sleeve may also be removed from the chill roll and transported for resurfacing and without requiring transporting of the chill roll. The sleeve may preferably comprise a nickel-phosphorous composition defining at least a radially outermost portion of the sleeve in which the polished surface is formed. More particularly, the nickel-phosphorous composition is preferably an amorphous nickel-phosphorous composition comprising nickel in a range of about 75 to 86 percent, and phosphorous in a range of about 14 to 25 percent. The nickel-phosphorous composition may be formed by electrodepositing or electroless depositing.