Patent ID: 8460778

Claim:
A perforated forming screen for making apertured formed films, the perforated forming screen comprising: at least one thermoset rubber layer with a Shore D hardness of 12-90, the rubber layer having a plurality of perforations extending therethrough and a plurality of laser-engraved, fine scale structures formed on at least one surface of the thermoset rubber layer adjacent to the plurality of perforations, the laser-engraved, fine scale structures comprising a size and spacing of no greater than about 254 microns, and the rubber layer and plurality of laser-engraved, fine scale structures not being sensitive to heat of a molten polymer used to make the apertured formed film such that the rubber layer and the plurality of laser-engraved, fine scale structures are maintained and not degraded when subjected to the heat of the molten polymer during a direct cast process.