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US 12,006,603 B2Granted
System for forming a fibre batt
AssigneeAndritz Asselin-Thibeau
InventorsJean-Christophe Laune, Wael Jabri
Life of this patent
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AssigneeAndritz Asselin-Thibeau
InventorsJean-Christophe Laune, Wael Jabri
Estimating the term…
A facility for forming a fibre batt, in particular nonwoven, provides a device for producing at least one fibre web, and a crosslapper which provides the fibre batt. The production device provides a carding drum and at least one doffer roller collecting the fibres on the drum and supplying the at least one web to at least one outfeed belt. The crosslapper provides an infeed belt for the introduction of the web in the crosslapper, which supplies the fibre batt formed of a stack of layers of the at least one web, and first control means of the profile of the thickness and/or of the area bulk density and/or of the bulk density of the web or of each web. A drafting means is arranged downstream of the outfeed belt of the production device and upstream of the infeed belt. Second control means may be provided to control drafting means.
A facility forming a fibre batt, comprising a production device for producing at least one fibre web made of fibres, and a crosslapper supplied in the at least one fibre web and providing, at an exit, the fibre batt, the production device comprising a carding drum and at least one doffer roller collecting the fibres on the carding drum and supplying the at least one fibre web to at least one outfeed belt located downstream of said production device, the crosslapper having an infeed belt, on which the at least one fibre web is placed for introduction of said at least one fibre in the crosslapper, the crosslapper supplying, at the exit, the fibre batt formed of a stack of layers of the at least one fibre web, and control means controlling a profile of a thickness and/or an area bulk density and/or a bulk density of the at least one fibre web as a function of time during the forming of the fibre batt, at a point of the at least one fibre web in the web production device, characterized by drafting means arranged so as to draft said at least one fibre web downstream of the at least one outfeed belt and upstream of the infeed belt of the crosslapper.
A facility for forming a fibre batt, comprising a production device for producing at least one fibre web made of fibres, and a crosslapper supplied in the at least one fibre web and providing, at an exit, the fibre batt, the production device comprising a carding drum and at least one doffer roller collecting the fibres on the carding drum and supplying the at least one fibre web to at least one outfeed belt, the crosslapper having an infeed belt, on which the at least one fibre web is placed for introduction of said at least one fibre in the crosslapper, the crosslapper supplying, at the exit, the fibre batt formed of a stack of layers of the at least one fibre web, and control means controlling a profile of a thickness and/or an area bulk density and/or a bulk density of the at least one fibre web as a function of time during the forming of the fibre batt, at a point of the at least one fibre web in the web production device, characterized by drafting means arranged so as to draft said at least one fibre web downstream of the at least one outfeed belt and upstream of the infeed belt of the crosslapper.
A facility for forming a fibre batt, comprising a production device for producing at least one fibre web made of fibres, and a crosslapper supplied in the at least one fibre web and providing, at an exit, the fibre batt, the production device comprising a carding drum and at least one doffer roller collecting the fibres on the carding drum and supplying the at least one fibre web to at least one outfeed belt, the crosslapper having an infeed belt, on which the at least one fibre web is placed for introduction of said at least one fibre in the crosslapper, the crosslapper supplying, at the exit, the fibre batt formed of a stack of layers of the at least one fibre web, and control means controlling a profile of a thickness and/or an area bulk density and/or a bulk density of the at least one fibre web as a function of time during the forming of the fibre batt, at a point of the at least one fibre web in the web production device at the at least one doffer, characterized by drafting means arranged so as to draft said at least one fibre web downstream of the at least one outfeed belt and upstream of the infeed belt of the crosslapper.
Dependencies are inferred from the claim text.