Filter cartridge made of an accordion fold pack folded in a zigzag-shaped manner and method for its manufacture
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United States of America Patent
Stats
-
Aug 6, 2002
Grant Date -
N/A
app pub date -
Aug 18, 2000
filing date -
Aug 28, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A filter cartridge made of an accordion fold pack folded in a zigzag-shaped manner and made of a thermoplastically moldable and heat-sealable material, whose folds are held at an adjusted, defined distance relative to each other, in particular made of a nonwoven fabric. The longitudinal direction of the accordion fold pack, transversely to the folds, the individual fold peaks are folded over in the same direction in at least one strip on one or both sides of the accordion fold pack and in each case fixedly joined to the next following, likewise turned-down fold at least in the overlapping region, by heat-sealing.
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