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US 6,074,192 AGranted
Lenticular pattern forming roll and method for making the roll
OwnerOystein Mikkelseninventor
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OwnerOystein Mikkelseninventor
Estimating the term…
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. The nickel-phosphorous composition may be formed by electrodepositing or electroless depositing. The lenticular sleeve may be slit and flattened to define a flat lenticular body for molding a lenticular screen.
A lenticular pattern forming roll for forming a lenticular screen, said lenticular pattern forming roll comprising:
A lenticular pattern forming roll for forming a lenticular screen, said lenticular pattern forming roll comprising:
A lenticular sleeve for positioning over a chill roll having a generally cylindrical shape for accepting a cooling fluid therethrough, said lenticular sleeve comprising:
An apparatus for making a lenticular screen, said apparatus comprising:
A method for making a lenticular pattern forming roll for forming a lenticular screen, the method comprising the steps of:
A method for making a lenticular sleeve to be used in an apparatus for forming a lenticular screen, the apparatus including a chill roll having a generally cylindrical shape and for accepting a cooling fluid therethrough, the method comprising the steps of:
A method for making a body having a lenticular pattern thereon to be used for forming a lenticular screen, the method comprising the steps of:
Dependencies are inferred from the claim text.