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US 7,401,396 B2Granted
Methods of making microstructured lamina and apparatus
Assignee3M Innovative Properties Company
InventorsLars A. Smeenk, Conrad V. Anderson, Nelson D. Sewall, Kenneth L. Smith
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Abstract
The present invention relates to methods of making microstructured laminae for replication and apparatus. In a preferred embodiment, the invention relates to machining V-shaped grooves on individual lamina forming cube-corner microstructures.
Claims20
A method of assembling lamina comprising:
- providing a lamina comprising a microstructured edge wherein the microstructured edge comprises a plurality of side grooves and the side grooves comprise different components of skew, different components of inclination, or a combination thereof;
- kinematically positioning individual lamina in a fixture forming a stack;
- and
- maintaining the position of a plurality of laminae in the stack such that the microstructured edges of the laminae form a microstructured surface.
1 more element
Dependencies are inferred from the claim text.