ClassID:

126519

D21F1/028 - CPC Classification

Classification description:

Wet end of machines for making continuous webs of paper; Head boxes of Fourdrinier machines Details of the nozzle section

Recent Application in this class:
#1
20250122670
2025-04-17

ABSORBENT MATERIAL AND METHOD OF PROVIDING AN ABSORBENT MATERIAL

#2
20240352675
2024-10-24

BARRIER LAYERS COMPRISING NANOCELLULOSE ONTO THE SURFACE OF PAPER OR PAPERBOARD SUBSTRATES AT THE WET END OF A PAPERMAKING PROCESS

#3
20240167227
2024-05-23

BARRIER COATINGS APPLIED TO NANOCELLULOSE-COATED PAPER AND PAPERBOARD

#4
20240141589
2024-05-02

METHOD AND DEVICE FOR PRODUCING AN MFC FILM

#5
20200283957
2020-09-10

APPARATUS, SYSTEMS AND METHODS FOR MAKING RE-PULPABLE INSULATED PAPER PRODUCTS

#6
20200122171
2020-04-23

Nozzle cap, nozzle device provided with such cap, and spraying method of chemical solution

#7
20190093286
2019-03-28

Sheet manufacturing apparatus

#8
20160305070
2016-10-20

Device for simultaneously measuring headbox slice opening and setback in a papermaking machine

#9
20130075051
2013-03-28

HEADBOX FOR A MACHINE FOR PRODUCING A FIBROUS MATERIAL WEB, IN PARTICULAR A PAPER OR CARDBOARD WEB

#10
20130025806
2013-01-31

Systems and methods for making fiber webs

#11
20130009335
2013-01-10

Systems and methods for making fiber webs

#12
20120312487
2012-12-13

SYSTEMS AND METHODS FOR MAKING FIBER WEBS

#13
20120193059
2012-08-02

Method for operating a sheet-forming unit, and sheet forming unit

#14
20120186767
2012-07-26

HEADBOX, SHEET FORMING UNIT WITH A HEADBOX AND METHOD FOR OPERATING A SHEET FORMING UNIT

#15
20120138251
2012-06-07

HEADBOX FOR A MACHINE TO PRODUCE A FIBER WEB

#16
20120024490
2012-02-02

PULP FEEDER FOR USED PAPER RECYCLING APPARATUS

#17
20110303382
2011-12-15

Sheet forming system for a machine for producing a multilayer fibrous web

#18
20110259540
2011-10-27

DOUBLE-LAYER HEADBOX FOR A MACHINE FOR PRODUCING A DOUBLE-LAYER FIBROUS WEB

#19
20100065239
2010-03-18

Headbox slice beam removal system and device

#20
20090139673
2009-06-04

Sheet formation process and wet end to produce a pulp web

#21
20090020251
2009-01-22

Machine for forming a fibrous web

#22
20080314538
2008-12-25

Paper Machine With One or a Plurality of Valve Devices

#23
20080216982
2008-09-11

Headbox apparatus for a papermaking machine

#24
20080179032
2008-07-31

Headbox apparatus for a papermaking machine

#25
20080110588
2008-05-15

Method for managing lamella vibrations of a lip channel of a head box and the lamella for the lip channel of the headbox

#26
20080099173
2008-05-01

Flow sheet for paper machine and method of manufacturing the same

#27
20080093042
2008-04-24

Multiple mode headbox

#28
20070181277
2007-08-09

Headbox apparatus for a papermaking machine

#29
20070163740
2007-07-19

Vane intended for a headbox of a paper machine and method for ensuring the straightness of a vane

#30
20060157215
2006-07-20

Arrangement in a headbox

#31
20050196283
2005-09-08

Vane for a headbox in a paper machine

#32
20050092453
2005-05-05

Method of ensuring flatness of a vane in a headbox by means of a mounting arrangement, headbox with such a mounting arrangement, a mounting arrangement and vane therefor

#33
20050051289
2005-03-10

Former and headbox for said former

#34
20050034827
2005-02-17

Method of forming a fibrous web