Patent ID: 6060003
Filing Date: 2000-05-09
Classification: B29C,B29D,B29K,B29L

Abstract:
A method of producing a lenticular plastic sheet, comprising the steps of:a. extruding a molten plastic sheet into a nip defined between a first chill roller and a patterned chill roller having an outer surface defining a first lenticular pattern thereon, thereby impressing a second lenticular pattern, complimentary in shape to the first lenticular pattern, onto the plastic sheet;b. cooling the plastic sheet as it is in contact with the patterned chill roller; andc. applying force on the plastic sheet in the direction of the patterned chill roller as the plastic sheet cools from being in a molten state to being in a non-molten state, so as to inhibit deformation of the second lenticular pattern as the plastic sheet cools.