US 11,946,179 B2
Former head and an apparatus comprising such a former head
Jens Erik Thordahl Petersen, Rønde (DK)
Assigned to Campen Machinery A/S, Hornslet (DK)
Appl. No. 17/290,003
Filed by Campen Machinery A/S, Hornslet (DK)
PCT Filed Nov. 14, 2019, PCT No. PCT/EP2019/081341
§ 371(c)(1), (2) Date Apr. 29, 2021,
PCT Pub. No. WO2020/104289, PCT Pub. Date May 28, 2020.
Claims priority of application No. PA201870771 (DK), filed on Nov. 21, 2018.
Prior Publication US 2022/0001573 A1, Jan. 6, 2022
Int. Cl. D04H 1/732 (2012.01); D01G 21/00 (2006.01); D04H 1/736 (2012.01)
CPC D04H 1/732 (2013.01) [D01G 21/00 (2013.01); D04H 1/736 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A former head for forming a fibrous web, where fibers are supplied to the former head mixed with air via at least one injection inlet, the former head comprising:
a) a roller being rotatable in a rotation direction around a rotation axis and comprising:
a roller surface surrounding the rotation axis, and
a plurality of first projections extending outwardly from the roller surface,
b) a screen extending along at least part of the roller surface above the rotation axis, the roller surface and the screen defining therebetween a peripheral gap, and
c) the injection inlet being positioned to conduct the mixture of the fibers and air into the peripheral gap in a delivery direction,
wherein said delivery direction is opposite to the rotation direction of the roller, and
said screen comprising a plurality of air inlets being configured for communicating with the peripheral gap and arranged before the injection inlet when viewed in the rotation direction of the roller.