Process for heat treatment of nonwovens
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United States of America Patent
Stats
-
Mar 14, 1989
Issued Date -
N/A
app pub date -
Nov 21, 1986
filing date -
Sep 26, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The process serves essentially for the thermal bonding of lightweight nonwovens. For this purpose, the nonwoven is heated up by means of air penetration on a sieve drum of a flow dryer to a high percentage of the bonding temperature, and immediately thereafter is embossed with internally heated rolls in the squeeze roll nip of a calender. The apparatus provided for conducting the process consists of a sieve drum device wherein the embossing calender is arranged.
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