ClassID:

127050

D21H23/56 - 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 by contacting paper with a device carrying the material Rolls

Sub-classes:
Recent Application in this class:
#1
20260103015
2026-04-16

THERMAL PAPER, AND METHODS AND SYSTEMS FOR FORMING THE SAME

#2
20250369191
2025-12-04

HEAT SEALABLE BARRIER MATERIAL

#3
20250361678
2025-11-27

METHOD FOR MANUFACTURING A BARRIER SUBSTRATE, AND A BARRIER SUBSTRATE

#4
20250354027
2025-11-20

INK JET PRIMER APPLIED ON A CORRUGATOR

#5
20250144951
2025-05-08

SHEETS FOR PRINTING, SHEETS FOR THERMAL PRINTING, AND METHODS AND SYSTEMS FOR FORMING THE SAME

#6
20240399778
2024-12-05

Thermal paper, and methods and systems for forming the same

#7
20240384470
2024-11-21

DISSOLVABLE NANOCELLULOSE SHEET

#8
20240011222
2024-01-11

A YANKEE DRYING CYLINDER AND A TISSUE PAPER MAKING MACHINE

#9
20230366151
2023-11-16

NITROCELLULOSE PAPERS AND METHODS OF PRODUCTION AND USE

#10
20230354883
2023-11-09

SMOKING ROLLING PAPER AND A METHOD FOR PACKAGING THE SAME

#11
20230265615
2023-08-24

Preparation method of heat-not-burn cigarette paper with boron nitride as thermally-conductive filler

#12
20230175206
2023-06-08

BARRIER RECYCLED PAPERBOARD AND METHOD FOR MANUFACTURING THEREOF

#13
20230131438
2023-04-27

COATED PAPER SUBSTRATE SUITABLE FOR METALLIZATION

#14
20230074973
2023-03-09

Water-dispersible composite structure and method of producing the same

#15
20220372710
2022-11-24

Tissue paper

#16
20220226857
2022-07-21

APPARATUS AND METHOD FOR COATING WEBS OF MATERIAL OR SHEETS OF MATERIAL WITH HOT-MELT ADHESIVE

#17
20220205185
2022-06-30

Formulation for size press applications

#18
20220128321
2022-04-28

TOTAL HEAT EXCHANGING ELEMENT PAPER AND TOTAL HEAT EXCHANGING ELEMENT

#19
20220081838
2022-03-17

Liquid applying apparatus for fiber products

#20
20220034028
2022-02-03

Engineered corn husk compositions and methods

#21
20210381171
2021-12-09

Hot-press gas grafting hydrophobization apparatus, and eco-friendly oil-absorbing low- weight paper manufactured using same

#22
20210363701
2021-11-25

Method for the production of a coated paper, paperboard or film and a coated paper, paperboard or film

#23
20210310196
2021-10-07

Water-dispersible composite structure and method of producing the same

#24
20210189660
2021-06-24

Device for applying a treatment substance

#25
20210189654
2021-06-24

Fibrous product

#26
20200306790
2020-10-01

Method and apparatus for coating on baggy web

#27
20200291580
2020-09-17

Barrier laminate with excellent barrier properties against moisture and gas and method of manufacturing same

#28
20200109517
2020-04-09

Oil and grease resistant paperboard

#29
20200094604
2020-03-26

LOW BASIS WEIGHT INKJET PRINTABLE SUBSTRATES WITH LOWER SHOWTHROUGH AND IMPROVED WATERFASTNESS AND PRINT DENSITY

#30
20200071883
2020-03-05

Surface treatment composition

#31
20190316297
2019-10-17

Process for the in-situ adjustmen of ion concentrations during the manufacturing of web materials

#32
20190315084
2019-10-17

Process for manufacturing an improved web material by the in-situ measurement and adjustment of ion concentration

#33
20190194871
2019-06-27

Fluorescent whitening agents and mixtures thereof

#34
20190161914
2019-05-30

Oil and grease resistant paperboard

#35
20190145051
2019-05-16

Process for producing a flaked thermal-insulating and/or acoustic-insulating material

#36
20190133385
2019-05-09

PATTERNED TISSUE PRODUCT

#37
20190003124
2019-01-03

Cationic surface sizing agent

#38
20180216298
2018-08-02

Texture subtractive patterning

#39
20180202106
2018-07-19

Printable compostable paperboard

#40
20170275824
2017-09-28

Monitoring applicator rods

#41
20170037578
2017-02-09

Separated treatment of paper substrate with multivalent metal salts and OBAs

#42
20170002517
2017-01-05

Printable compostable paperboard

#43
20160362840
2016-12-15

Monitoring applicator rods and applicator rod nips

#44
20160362267
2016-12-15

Monitoring applicator rods

#45
20160340833
2016-11-24

Compostable paperboard with oil, grease, and moisture resistance

#46
20160251804
2016-09-01

Method of increasing paper surface strength by using polyaluminum chloride in a size press formulation containing starch

#47
20160230343
2016-08-11

Oil, grease, and moisture resistant paperboard

#48
20160160448
2016-06-09

Towel with quality wet scrubbing properties at relatively low basis weight and an apparatus and method for producing same

#49
20160017543
2016-01-21

Method of manufacturing glassine paper

#50
20150367654
2015-12-24

System and method for forming hydrophobic structures in a porous substrate

#51
20150290899
2015-10-15

Web adhesive application device and adhesive application method as well as cardboard sheet manufacturing device

#52
20150150036
2015-05-28

Video display apparatus and operating method thereof

#53
20150110961
2015-04-23

Coated paper having a coating structure with controlled distribution of latex and method for preparing the same

#54
20150086712
2015-03-26

Method for coating a paper web

#55
20150010734
2015-01-08

Method of forming single face corrugated board

#56
20140363581
2014-12-11

Printing coated paper and method for producing a printed material using the same

#57
20140335333
2014-11-13

PAPER WITH IMPROVED STIFFNESS AND BULK AND METHOD FOR MAKING SAME

#58
20140314946
2014-10-23

Assembly for a Device of a Fiber Web Production Line

#59
20140287138
2014-09-25

Method of forming single face corrugated board

#60
20140220323
2014-08-07

Paper sizing composition with salt of calcium (II) and organic acid, products made thereby, method of using, and method of making

#61
20140198166
2014-07-17

Low grammage recording medium

#62
20140182799
2014-07-03

Method of increasing paper surface strength by using acrylic acid/acrylamide copolymer in a size press formulation containing starch

#63
20140123204
2014-05-01

Video display apparatus and operating method thereof

#64
20130340674
2013-12-26

Paper coating apparatus with multiple hot wax applicators and associated methods

#65
20130235118
2013-09-12

Surface sizing composition for print media in digital printing

#66
20130105099
2013-05-02

Fluorescent dyes for paper dyeing

#67
20120308790
2012-12-06

Surface treatment composition

#68
20120255671
2012-10-11

METHOD FOR PRODUCING A MULTI-PLY WEB OF FLEXIBLE MATERIAL

#69
20120171440
2012-07-05

Process for applying high viscosity composition to a sheet with high bulk

#70
20120125231
2012-05-24

Coating Formulation

#71
20120121872
2012-05-17

Paper sizing composition with salt of calcium (II) and organic acid, products made thereby, method of using, and method of making

#72
20120111516
2012-05-10

Method and apparatus for treating a fibrous web

#73
20120104009
2012-05-03

BIODEGRADABLE BUBBLE-SHAPED WRAP AND VOID FILL BRACES

#74
20120040200
2012-02-16

Recording sheet with improved image waterfastness, surface strength, and runnability

#75
20120018109
2012-01-26

White Tinting File Folder

#76
20110287273
2011-11-24

Method for making a sheet of degradable paper, use of said sheet for making a mandrel defining a roll carrier, degradable paper sheet, and mandrel including at least one of said sheets

#77
20110281042
2011-11-17

SURFACE ADDITIVES FOR WHITENESS IMPROVEMENTS TO REVERSE WHITENESS LOSS DUE TO CALCIUM CHLORIDE

#78
20110240242
2011-10-06

Method and system using low fatty acid starches in paper sizing composition to inhibit deposition of multivalent fatty acid salts

#79
20110240241
2011-10-06

Method and system using surfactants in paper sizing composition to inhibit deposition of multivalent fatty acid salts

#80
20110205287
2011-08-25

Composition and print medium

#81
20110204232
2011-08-25

Determining the amount of starch

#82
20110200793
2011-08-18

Method of dying and coating paper for printing

#83
20110200747
2011-08-18

Coated web manufacturing machine

#84
20110195193
2011-08-11

AN END SEALING DEVICE FOR A METERING NIP, A COATER WITH A SEALED END AND A METHOD OF USING SAME

#85
20110183121
2011-07-28

Method of forming single face corrugated board

#86
20110162811
2011-07-07

Modifying agent for yankee coatings

#87
20110088862
2011-04-21

Printable product and a method for manufacturing a printable product

#88
20110057069
2011-03-10

Coated Paperboard Core For Elastomeric Fiber Production

#89
20110020532
2011-01-27

Papermaking coating station with pressure-sensitive film roll

#90
20110003079
2011-01-06

PROCESSES FOR PREPARING COATED PAPERS

#91
20100247780
2010-09-30

ROLLER COATING SYSTEM FOR WEB BASED SUBSTRATES

#92
20100236737
2010-09-23

Process for the production of a cellulosic product

#93
20100221449
2010-09-02

Method and apparatus for applying plastic coatings

#94
20100209725
2010-08-19

METHOD OF MODIFYING PAPER AND CARDBOARD

#95
20100051674
2010-03-04

WATER-REPELLANT AND GAS BARRIER COMPOSITE MATERIAL

#96
20100024886
2010-02-04

Sizing Solution Delivery Systems for A Sizing Press and Methods for Reducing Sizing Solution Volumes During Operation Therefof

#97
20100009088
2010-01-14

Device and method for coating

#98
20090324980
2009-12-31

Process for Producing Coated Paper and Coated Paper

#99
20090320708
2009-12-31

RECORDING SHEET WITH IMPROVED PRINT DENSITY

#100
20090312168
2009-12-17

Elastic Roll Cover, Covered Roll and Method of Manufacturing a Covered Roll

#101
20090297719
2009-12-03

METHOD OF PREVENTING THE APPEARANCE OF MISTING WHEN COATING FLEXIBLE MEDIA WITH A CROSSLINKABLE LIQUID SILICONE COMPOSITION IN A MULTI-ROLL DEVICE

#102
20090226670
2009-09-10

Embossing device for at least two-layered planar products such as toilet paper, tissues, or similar

#103
20090226617
2009-09-10

PAPERBOARD FOR USE IN WATER RESISTANT PACKAGING

#104
20090102087
2009-04-23

Method for manufacturing biodegradable paperboard for paper tableware

#105
20090065141
2009-03-12

Method for producing a non-slip coating

#106
20090020247
2009-01-22

Paper with improved stiffness and bulk and method for making same

#107
20080314544
2008-12-25

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

#108
20080289786
2008-11-27

Recording sheet with improved image waterfastness, surface strength, and runnability

#109
20080268158
2008-10-30

Method for treating a substrate

#110
20080254298
2008-10-16

Method for treating a substrate

#111
20080236774
2008-10-02

Machine And Method For Producing A Fibrous Web

#112
20080230001
2008-09-25

Method for treating a substrate

#113
20080131632
2008-06-05

Environmental protection paper material structure used for food containers and manufacturing method thereof

#114
20080124477
2008-05-29

Apparatus and method for bar coating

#115
20080110587
2008-05-15

ROSIN-BASED RESINS FOR SURFACE SIZING APPLICATION

#116
20080105197
2008-05-08

Device for Applying a Coating Material to a Paper Web

#117
20080098931
2008-05-01

Process for manufacturing paper and paperboard products

#118
20080087216
2008-04-17

Film coater method and apparatus

#119
20070235152
2007-10-11

On-machine coater

#120
20070214984
2007-09-20

Rod holder device

#121
20070184205
2007-08-09

PAPERBOARD FOR USE IN WATER RESISTANT PACKAGING

#122
20060283566
2006-12-21

Method for producing coated paper with pearlescent effect

#123
20060182889
2006-08-17

Method for feeding a treating agent to an application apparatus

#124
20060130986
2006-06-22

Flexible multi-ply tissue products

#125
20060081179
2006-04-20

Device, method and arrangement for pressing two axis-parallel rollers approachable to one another in a device for producing and/or treating a web of material

#126
20060013951
2006-01-19

Coater and method for producing coated sgeet and air floating mini-turn bar

#127
20050271821
2005-12-08

Method for treating surfaces of textile

#128
20050229925
2005-10-20

Method for the treatment of starch

#129
20050196538
2005-09-08

Apparatus and method for applying finishing agents onto a nonwoven web

#130
20050129854
2005-06-16

Film coater apparatus

#131
20050089651
2005-04-28

Method for producing coated paper for printing

#132
20050089641
2005-04-28

Method and apparatus for making a multilayer coating

#133
18203740
2024-04-16

Thermal paper, and methods and systems for forming the same

#134
17899857
2023-11-28

Fire resistant retail product packaging materials and method of manufacturing same