B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
B29D 28/00 (2006.01)
Patent
CA 2071702
An apertured thermoplastic fabric is formed by extruding, in the form of a film, a molten thermoplastic polymer, embossing the film in a nip provided between a smooth surfaced roll and a patterned roll, wherein the patterned roll includes a plurality of discrete, raised projections disposed in a pattern and each of which includes a sharp distal ends applying sufficient pressure at the nip of the patterned and smooth surfaced rolls for causing a plurality of small apertures to be formed in the extruded film in substantially the same pattern as the pattern of discrete, raised projections; orienting the apertured film in both the cross-machine direction and in the machine-direction, and thereafter embossing the oriented film on at least one surface with a plurality of raised members spaced closer to each other than the spaces between the apertures in the oriented film, to thereby provide a matte-type finish on at least one surface. The formed fabric also farms a part of the present invention.
Hovis Edward E.
Johnson Eric D.
Applied Extrusion Technologies Inc.
Ridout & Maybee Llp
LandOfFree
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