System, method and material for making pneumatically filled packing cushions
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 7, 2004
Grant Date -
May 15, 2003
app pub date -
Dec 18, 2002
filing date -
Jan 20, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
System, method and material for making pneumatically filled packing cushions in which a plastic film material having two superposed layers joined together along first and second longitudinal edges is prefabricated at a first location by forming longitudinally spaced, transversely extending rows of perforations across it and sealing it together along seal lines which extend from the first edge of the material in a direction generally parallel to the rows of perforations other and terminate a short distance from the second edge to form chambers with open mouths facing the second edge between the rows of perforations. The material is then fan-folded or formed into rolls for storage and shipment. At a second location, gas is introduced into the chambers by passing the material along a tube positioned between the ends of the seals and the second edge of the material and injecting the gas into the open mouths of the chambers through openings in a side wall of the tube. The two layers are then sealed together across the open mouths to close the chambers and retain the gas in them.
First Claim
Other Claims data not available
