Stock material or miscellaneous articles – Structurally defined web or sheet – Including aperture
Patent
1997-01-30
1999-08-31
Kiliman, Leszek
Stock material or miscellaneous articles
Structurally defined web or sheet
Including aperture
4283044, 4283142, 4283144, 4283148, 425290, 425291, 425295, 4253871, 425388, 425403, 425471, 425296, 425298, 264154, 264155, 264156, B32B 310
Patent
active
059451963
ABSTRACT:
A method for the manufacture of a screen useful for forming three-dimensional films, the screens and the three-dimensional films produced using those screens are disclosed. In forming a screen, a substrate material is applied to a base. A predetermined amount of portions of the substrate are removed to form a predetermined pattern in the substrate. A screen material is applied to the patterned substrate material. A predetermined amount of portions of the screen material are removed to form a predetermined pattern in the screen material. The predetermined pattern in the screen defines a plurality of first perforations in the screen material. The substrate material is removed from the screen material, such that second perforations are formed in the screen, whereby each first perforation is in communication with an adjacent second perforation.
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"Controlled Aperture Seamless Tubular Screens", drawing of hex screen, IR Engraving, Inc., May 17, 1994, 1 page.
Cook Edward R.
Rieker Gregory M.
Kiliman Leszek
Tredegar Industries Inc.
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