Patent ID: 6696507
Filing Date: 2004-02-24
Classification: A61C,A61K,Y10T

Abstract:
A method of working with a unit dose of photosensitive material comprising the steps of:providing the unit dose of material in a package, wherein said material comprises a polymeric matrix and a filler component; wherein said filler component comprises (a) a first plurality of particles having an average particle size of from about 1 to about 10 micrometers; (b) a second plurality of particles having an average particle size of from about 0.1 to about 1 micrometers; and, (c) a plurality of filler particles having an average particle size of from about 0.01 to about 0.04 micrometers; said package having an open top container having a base and at least one upstanding wall and having an open area therein; said at least one upstanding wall having a first end proximate to said base and an end proximate to said open top; said end proximate to said open top being contiguously formed with a laterally extending web; a release layer removably fixed to said web and enclosing said open area; said container and said release layer being substantially non-transmissive of at least a portion of the light spectrum to which the materials are photosensitive; removing said release layer from said package; removing the unit dose of material from said package and placing the unit dose of material onto a support surface; repeatedly removing a selected portion of the unit dose of material and inverting and placing said package over the unit dose of material; such that light is prevented from contacting the unit dose of material under said package.