Appeal No. 94-4226
Application No. 07/838,345
The subject matter on appeal relates to an article having at
least one surface exhibiting antireflection properties. Further
details of this appealed subject matter are set forth in
illustrative claims 1, 3, 10, 20 and 24, which read as follows:
1. A process for producing an article having at least one
surface which exhibits antireflection properties, comprising the
step of:
a) transferring to at least one surface of an article, a
surface structure of a polymeric film, wherein said polymeric
film comprises a thermoplastic material,
said surface structure comprising individual, randomly
distributed elevations, wherein said elevations rise 0.01 to 15
microns above the lowest regions of the surface having the
elevations,
so that the resultant article comprises a mirror image of
said surface structure, wherein said surface has a substantially
uniform configuration comprising mutually linked individual
structures, wherein said surface structure comprises continually
repeating elementary cells which have a mean diameter of about
10 to 800 microns,
said transferring comprising transferring the surface
structure of said film to said article by applying a surface of
said film having said structure to said article, so as to form a
mirror-image of said structure on said article, and, thereafter,
optionally removing said film.
3. A process as claimed in claim 1, wherein said elevations
are formed by the presence of at least one of inorganic or
organic additives in the film.
10. A process as claimed in claim 1, wherein said film
comprises a uniaxially or biaxially oriented film which has been
heat-set.
20. An article produced by a process according to claim 1.
2
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