ClassID:

126518

D21F1/026 - CPC Classification

Classification description:

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

Recent Application in this class:
#1
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2025-08-28

Process and System for Reorienting Fibers in a Foam Forming Process

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SHEET MANUFACTURING APPARATUS

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Process and system for reorienting fibers in a foam forming process

#4
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METHOD AND DEVICE FOR PRODUCING AN MFC FILM

#5
20210246612
2021-08-12

FIBROUS BODY ACCUMULATING DEVICE AND FIBER STRUCTURE PRODUCING DEVICE

#6
20210246611
2021-08-12

Fibrous body accumulating device and fiber structure producing device

#7
20210189650
2021-06-24

Method of and an arrangement for adding at least one additional stock component to an approach flow system of a fiber web machine

#8
20200399830
2020-12-24

Fiber transport apparatus and fiber transport method

#9
20190085510
2019-03-21

Paper manufacturing system

#10
20140060765
2014-03-06

Headbox apparatus

#11
20120193059
2012-08-02

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

#12
20120186767
2012-07-26

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

#13
20110297342
2011-12-08

Process for the production of paper or paperboard

#14
20100108281
2010-05-06

Tube bank apparatus for distributing stock

#15
20090218064
2009-09-03

Tube bank apparatus for distributing stock

#16
20080216982
2008-09-11

Headbox apparatus for a papermaking machine

#17
20080179032
2008-07-31

Headbox apparatus for a papermaking machine

#18
20080135198
2008-06-12

Apparatus For Controlling the Consistency of a Flow of Stock Solution

#19
20080023167
2008-01-31

Deflection compensation roll

#20
20070181277
2007-08-09

Headbox apparatus for a papermaking machine

#21
20050196283
2005-09-08

Vane for a headbox in a paper machine

#22
20050051289
2005-03-10

Former and headbox for said former