Stock material or miscellaneous articles – Web or sheet containing structurally defined element or...
Patent
1997-08-04
1999-10-19
Krynski, William
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
428 369, 428371, 428398, 428906, B32B 702
Patent
active
059686383
ABSTRACT:
Multiple sheets spiral bound together as a unit by a continuous filament. The sheets have a plurality of closely spaced perforations aligned along an edge thereof. The filament is an elongated rod-like member having an outer surface and a centrally-located longitudinal axis. The filament is flexible and is disposed in spiral configuration through the perforations. The filament additionally comprises an inner surface defined by an internal elongate passage extending therethrough. The internal opening facilitates crimping of the inventive filament after it has been spiraled into a plurality of closely spaced perforations aligned along an edge of a stack of sheets. The internal opening in the filament also provides improved control over the outer dimension of the filament during manufacture.
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Brown James M.
Huskey Tom R.
Prawdzik David J.
Cronin Chris
Krynski William
Specialty Filaments, Inc.
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