ClassID:

127036

D21H23/28 - CPC Classification

Classification description:

Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added; Addition to the formed paper during paper manufacture by selecting point of addition or moisture content of the paper Addition before the dryer section, e.g. at the wet end or press section

Recent Application in this class:
#1
20250163648
2025-05-22

IN-LINE APPLICATION OF DISPERSION BARRIER

#2
20240229358
2024-07-11

METHOD FOR MANUFACTURING A BARRIER FILM COMPRISING HIGHLY REFINED CELLULOSE

#3
20240133118
2024-04-25

METHOD FOR MANUFACTURING A BARRIER FILM COMPRISING HIGHLY REFINED CELLULOSE

#4
20230313467
2023-10-05

STRENGTH IMPROVEMENT VIA SPRAYBOOM APPLICATION

#5
20230074973
2023-03-09

Water-dispersible composite structure and method of producing the same

#6
20230035105
2023-02-02

SURFACE ENHANCED PULP FIBERS AT A SUBSTRATE SURFACE

#7
20230002572
2023-01-05

A METHOD OF MAKING A CELLULOSE FILM COMPRISING MICROFIBRILLATED CELLULOSE

#8
20220074144
2022-03-10

Paperboard and a method of producing a paperboard

#9
20210310196
2021-10-07

Water-dispersible composite structure and method of producing the same

#10
20210189654
2021-06-24

Fibrous product

#11
20210054570
2021-02-25

Process for production of film comprising microfibrillated cellulose

#12
20210002830
2021-01-07

Method for manufacturing a multi-layered paperboard, multi-layered paperboard and composition for use in multi-layered paperboard manufacturing

#13
20200325629
2020-10-15

Surface enhanced pulp fibers at a substrate surface

#14
20190003125
2019-01-03

Sizing method for making paper and paper prepared thereof

#15
20180355557
2018-12-13

Manufacturing method for a film or product comprising an amphiphilic polymer

#16
20180298556
2018-10-18

Paper-Making Aid Composition and Process for Increasing Tensile Strength of Paper

#17
20180216294
2018-08-02

Method for producing paper

#18
20180202105
2018-07-19

Ink fixative solutions

#19
20180043644
2018-02-15

Sheet manufacturing apparatus

#20
20180014986
2018-01-18

Absorbent article and method of manufacturing the same

#21
20170089011
2017-03-30

Compositions and methods of making paper products

#22
20170022669
2017-01-26

Method for producing a mat of cellulose fibres with a controlled level of mineral material for bitumen-impregnated roofing elements, and suitable device

#23
20160348320
2016-12-01

VOLATILE DEBONDER FORMULATIONS FOR PAPERMAKING

#24
20160288435
2016-10-06

Sheet manufacturing apparatus, sheet manufacturing method, and sheet

#25
20130248132
2013-09-26

Volatile debonder formulations for papermaking

#26
20130160959
2013-06-27

Compositions and methods of making paper products

#27
20130068407
2013-03-21

Volatile debonder formulations for papermaking

#28
20090071396
2009-03-19

SYSTEM FOR PRODUCTION-LINE PRINTING ON WET WEB MATERIAL

#29
20080314544
2008-12-25

Method and Device for Applying a Coating Medium in a Machine Used for Producing a Fiber Web

#30
20080264587
2008-10-30

Reducing the Water and Water Vapour Absorbence and Enhancing the Dimensional Stability of Paper and Paper Products and Use of Coated Paper Products

#31
20080053634
2008-03-06

Method for the Application of an Application Medium and Method and Machine for Production of a Fiber Web

#32
20070029060
2007-02-08

Method and apparatus for applying a material to a wide high-speed web

#33
20060283565
2006-12-21

Making foam coated mats on-line

#34
20060076118
2006-04-13

Starch and fiber mixture for papermaking and methods of making paper with the mixture

#35
20050247421
2005-11-10

Paper products and method of making

#36
20050241790
2005-11-03

Paper products and method of making

#37
20050230071
2005-10-20

Method for incorporating feature substances into a paper web

#38
20050142348
2005-06-30

Method of making foam coated mat online and coated mat product

#39
20050136779
2005-06-23

Process for reinforcing a hydro-entangled pulp fibre material, and hydro-entangled pulp fibre material reinforced by the process

#40
20050136241
2005-06-23

Method of making coated mat online

#41
20050133184
2005-06-23

Paper products and method of making

#42
20050133178
2005-06-23

Paper products and method of making

#43
20050098288
2005-05-12

Starch and fiber mixture for papermaking and methods of making paper with the mixture

#44
20050064099
2005-03-24

System for production-line printing on wet web material

#45
20050061432
2005-03-24

Method for releasing laminated materials