Stock material or miscellaneous articles – Structurally defined web or sheet – Including aperture
Patent
1998-05-06
2000-03-14
Watkins, III, William P.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including aperture
428131, 428137, 428138, 428133, 428153, 428154, 428126, 428127, 428129, 206521, 206586, 206814, 493967, 493464, 493340, B32B 310
Patent
active
06037036&
ABSTRACT:
A cushioning conversion machine, converting method and dunnage product characterized by a novel connecting assembly which provides a unique interlock between overlapped portions of sheet-like stock material forming a dunnage product to prevent "unzippering" of the product. The connecting assembly includes a pair of loosely meshed stitching wheels, a first one of the stitching wheels having a plurality of radial projections protruding from a radially outer circumferential surface thereof, and a second one of the stitching wheels including a plurality of recesses for receiving the radial projections in meshed relationship upon rotation of the stitching wheels. The radial projections each have a radially outer end portion forming a hook, whereby, upon rotation of the stitching wheels with the overlapped portions of the stock material passing therebetween, the radial projection will pierce through and form a perforation in the overlapped portions as it moves into the recess in the second stitching wheel and then hook and reversely pull back through the perforation at least partway a tab portion of the overlapped portions adjacent the perforation.
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Ranpak Corp.
Watkins III William P.
LandOfFree
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