Process and apparatus for microreplication

Details Process and apparatus for microreplication Process and apparatus for microreplication

2005-01-31

2008-08-26

Tentoni, Leo B (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to work

Limited to treatment of surface or coated surface

C264S210200, C264S284000, C264S293000, C264S448000, C264S464000, C264S476000, C264S480000, C264S481000

Reexamination Certificate

active

07416692

ABSTRACT:
A method of embossing a sheet material includes: heating at least a portion of the sheet directly or indirectly with radiant energy from a radiant energy source; pressing a tool against the heated portion of the sheet, thereby patterning a surface of the sheet; and separating the sheet and the tool. The radiant energy may travel through a solid material that is relatively transparent to radiation, on its way to being absorbed by a relatively-absorptive material. The relatively-transparent material may be an unheated portion of the sheet, and the relatively-absorptive material may be either the tool or the heated portion of the sheet. Alternatively, the relatively-transparent material may be the tool, and the relatively-absorptive material may be all or part of the sheet. The method may be performed as one or more roll-to-roll operations.

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