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US 9,279,906 B2Granted
Microstructure film
AssigneeE Ink California, LLC
InventorGary Yih-Ming Kang
Life of this patent
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Abstract
The present invention is directed to a microstructure film comprising an area of microstructures and two edge areas, wherein the height of the highest part in the edge areas exceeds the height of the highest point in the microstructures, preferably by about 1 μm to about 1 mm. The application also describes how such a film may be manufactured.
Claims6
An embossing assembly for manufacturing a microstructure film, comprising:
- a) a drum;
- b) an embossing shim tightly wrapped around the drum wherein the embossing shim has a three-dimensional pattern for forming microstructures;
- c) a tape laminated around each end of the embossing shim;
- and
- d) a deformable nip roller capable of pressing against the tape and the embossing shim to create spaces for an embossing composition to enter to form edge areas.
2 more elements
Dependencies are inferred from the claim text.