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US 7,609,450 B2Granted
Plastic sheets with lenticular lens arrays
AssigneeSpartech Corporation
InventorTodd R. Niemuth
Life of this patent
Estimating the term…
Abstract
A lenticular sheet, in one exemplary embodiment, includes a first surface having at least two portions, an opposing second surface, and a plurality of lenticular lenses formed in the first surface. Each portion of the first surface includes a number of lenticular lenses per centimeter that is different from the number of lenticular lenses per centimeter of an adjacent portion of the first surface.
Claims19
A lenticular sheet comprising:
- a first surface comprising at least two portions;
- an opposing second surface;
- a plurality of lenticular lenses formed in said first surface, each said portion of said first surface comprising a plurality of lenticular lenses, a first portion of said first surface having a number of lenticular lenses per centimeter that is different from a number of lenticular lenses per centimeter of an adjacent second portion of said first surface, a width of each said lenticular lens in said first portion being greater than a width of each said lenticular lens in said adjacent second portion;
- a plurality of intersecting score lines, said score lines defining a plurality of articles that are formed in said sheet;
- and
- a plurality of hinge areas formed into said sheet, each article including a portion of at least one hinge area.
3 more elements
A method of manufacturing a lenticular sheet comprising the steps of:
- providing an optically clear plastic substrate sheet, the sheet having a first surface and an opposing second surface, the first surface having at least two portions;
- forming a plurality of lenticular lenses in the first surface so that each portion of the first surface comprises a plurality of lenticular lenses, a first portion of the first surface having a number of lenticular lenses per centimeter that is different from a number of lenticular lenses per centimeter of an adjacent second portion of the first surface, a width of each lenticular lens in the first portion being greater than a width of each lenticular lens in the adjacent second portion;
- forming a plurality of intersecting score lines in the first surface of the sheet, the score lines defining a plurality of articles that are formed in the sheet;
- said step of forming a plurality of lenticular lenses comprises contacting the first surface of the substrate sheet with an embossing device having a negative pattern of the plurality of lenticular lenses;
- and
- forming a plurality of hinge areas into the sheet, each article including a portion of at least one hinge area.
3 more elements
A lenticular lens embossing device comprising:
- an engagement member having an outer surface having at least two portions;
- and
- a negative of a pattern of lenticular lenses engraved into said outer surface of said engagement member, said pattern of lenticular lenses comprising an arrangement with each portion of said outer surface of said engagement member comprising a plurality of lenticular lenses, said pattern of lenticular lenses comprising a number of lenticular lenses per centimeter that is different from a number of lenticular lenses per centimeter of an adjacent portion of said outer surface, a width of each said lenticular lens in a first portion being greater than a width of each said lenticular lens in a second adjacent portion;
- said outer surface of said engagement member comprising a plurality of projections configured to form a plurality of intersecting score lines in a plastic sheet;
- and said outer surface of said engagement member comprising a plurality of projections configured to form a plurality of hinge areas formed into a plastic sheet.
2 more elements
Dependencies are inferred from the claim text.