Apparatus for blow-extruding filaments for making a fleece
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United States of America Patent
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-
Sep 28, 1993
Grant Date -
N/A
app pub date -
Nov 14, 1991
filing date -
Nov 17, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a apparatus of making a nonwoven mat wherein a multiplicity of filaments are extruded in a row and a pair of jets of compressed gas are played symmetrically from nozzles upon the filaments as same are extruded to stretch the filaments and deposit same on a substrate the compressed gas is made to flow from a source along respective paths to the nozzles and each of the flows and paths is branched upstream of respective flow-equalizing stations. The speed of the respective flows is decreased and their pressures are increased with at least one diffuser. The flows are then baffled and united between the flow-equalizing station and the respective nozzles in a flow guide.
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