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US 6,223,398 B1Granted
Web heating device for a fiber processing machine
AssigneeTrutzschler GmbH & Co. KG
InventorFerdinand Leifeld
Life of this patent
Estimating the term…
Abstract
A textile fiber processing machine includes a device for forming a fiber web from a fiber lap; a device for advancing the fiber web to a web outputting device for discharging the web thereby in a direction of advance; and two cooperating calender rolls defining a nip receiving the web discharged by the web outputting device. The calender rolls are situated immediately adjacent the web outputting device downstream thereof as viewed in the direction of web advance. Further, a heating arrangement is provided for heating at least one of the calender rolls for thermo-bonding the web as it passes through the nip of the calender rolls.
Claims12
A roller card unit comprising
- (a) first means for forming a fiber web from a fiber lap;
- (b) second means for advancing the fiber web from said first means to a web outputting device for discharging the web thereby in a direction of advance;
- (c) a web pressing device defining a nip receiving the web discharged by said web outputting device;
- said web pressing device being situated immediately adjacent said web outputting device downstream thereof as viewed in said direction of advance;
- (d) heating means disposed in a zone of said web pressing device for heating said web for thermo-bonding said web as it passes through said nip;
- and
- (e) a cooling roll disposed downstream of said web pressing device and contacting said web.
4 more elements
A roller card unit comprising
- (a) first means for forming a fiber web from a fiber lap;
- (b) second means for advancing the fiber web from said first means to a web outputting device for discharging the web thereby in a direction of advance;
- (c) a web pressing device comprising first and second cooperating rolls defining a nip receiving the web discharged by said web outputting device;
- said web pressing device being situated immediately adjacent said web outputting device downstream thereof as viewed in said direction of advance;
- (d) heating means disposed in a zone of said web pressing device for heating said web for thermo-bonding said web as it passes through said nip;
- and
- (e) means for causing said web to contact said second calender roll along a circumferential length portion thereof after passing through said nip.
4 more elements
A roller card unit comprising
- (a) first means for forming a fiber web from a fiber lap;
- (b) second means for advancing the fiber web from said first means to a web outputting device for discharging the web thereby in a direction of advance;
- said web outputting device comprising a web-engaging roll;
- (c) a web pressing device defining a nip receiving the web discharged by said web outputting device;
- said web pressing device being situated immediately adjacent said web outputting device downstream thereof as viewed in said direction of advance;
- (d) heating means disposed in a zone of said web pressing device for heating said web for thermo-bonding said web as it passes through said nip;
- and
- (e) a stationary web guiding device situated underneath said web-engaging roll for guiding said web into said nip.
5 more elements
A roller card unit comprising
- (a) first means for forming a fiber web from a fiber lap;
- (b) second means for advancing the fiber web from said first means to a web outputting device for discharging the web thereby in a direction of advance;
- said web outputting device comprising a stripping roll
- (c) a web pressing device defining a nip receiving the web discharged by said web outputting device;
- said web pressing device being situated immediately adjacent said web outputting device downstream thereof as viewed in said direction of advance;
- and
- (d) heating means disposed in a zone of said web pressing device for heating said web for thermo-bonding said web as it passes through said nip.
4 more elements
A roller card unit comprising
- (a) first means for forming a fiber web from a fiber lap;
- (b) second means for advancing the fiber web from said first means to a web outputting device for discharging the web thereby in a direction of advance;
- (c) a web pressing device comprising first and second cooperating calender rolls defining a nip receiving the web discharge by said web outputting device;
- said web pressing device being situated immediately adjacent said web outputting device downstream thereof as viewed in said direction of advance;
- (d) heating means disposed in a zone of said web pressing device for heating said web for thermo-bonding said web as it passes through said nip;
- and
- (e) means for causing said web to contact said first calender roll along a circumferential length portion thereof before passing through said nip.
4 more elements
Dependencies are inferred from the claim text.