Stock material or miscellaneous articles – Structurally defined web or sheet – Including grain – strips – or filamentary elements in...
Patent
1978-10-19
1980-11-11
Hess, Bruce H.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including grain, strips, or filamentary elements in...
428134, 428138, 428256, B32B 512
Patent
active
042333504
ABSTRACT:
A foraminous sheet having properties similar to those of a sheet formed by perforation is made by arranging filaments in overlying groups to produce a non-woven mesh, and applying pressure to the overlying groups so that the intersections of the filaments are flattened to an extent such that the sheet which is produced has a substantially uniform thickness except at the locations of its openings and in the immediate vicinity thereof. The filaments of the mesh are fused together at their intersections in the pressure application step. Fusion of the filaments as well as flattening are aided by the application of heat.
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Hess Bruce H.
Hopeman Brothers, Inc.
Smith, Jr. George A.
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