ClassID:

127045

D21H23/46 - 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 Pouring or allowing the fluid to flow in a continuous stream on to the surface, the entire stream being carried away by the paper

Sub-classes:
Recent Application in this class:
#1
20260109876
2026-04-23

BIODEGRADABLE POLYMER BLEND AND USE THEREOF

#2
20250163649
2025-05-22

OFFLINE ROLL TO ROLL WEB COATING

#3
20250163648
2025-05-22

IN-LINE APPLICATION OF DISPERSION BARRIER

#4
20240102248
2024-03-28

USE OF NON-HALOGEN FIRE RETARDANT COMPOSITION FOR INDIRECT FIRE PROTECTION LAYERS ON SUBSTRATES

#5
20230416992
2023-12-28

BARRIER FILM FOR PACKAGING MATERIAL

#6
20230407570
2023-12-21

ELECTRICALLY CONDUCTIVE SMART PAPERS

#7
20230366151
2023-11-16

NITROCELLULOSE PAPERS AND METHODS OF PRODUCTION AND USE

#8
20230295874
2023-09-21

POLYPROPYLENE COATED PAPER AND PAPERBOARD

#9
20230279614
2023-09-07

FOAM-ASSISTED APPLICATION OF SIZING AGENTS TO PAPER PRODUCTS

#10
20230151551
2023-05-18

Multi-layer printing substrate with hidden information

#11
20230095967
2023-03-30

Paper precoat process

#12
20220064860
2022-03-03

Polyvinyl Alcohol Coated Cellulosic Products

#13
20220002948
2022-01-06

POLYMER COATED PAPER AND PAPERBOARD

#14
20210372051
2021-12-02

SURFACE-TREATED FIBROUS MATERIALS AND METHODS FOR THEIR PREPARATION

#15
20180221911
2018-08-09

Methods and apparatus for applying adhesives in patterns to an advancing substrate

#16
20130180537
2013-07-18

Method and apparatus for making slit-banded wrapper using moving orifices

#17
20120213923
2012-08-23

Methods and apparatus for applying adhesives in patterns to an advancing substrate

#18
20110274834
2011-11-10

Methods and apparatus for applying adhesives in patterns to an advancing substrate

#19
20100009168
2010-01-14

COATED PAPER OR BOARD PRODUCT AND PROCESS FOR THE PREPARATION THEREOF

#20
20090277466
2009-11-12

Method and apparatus for making slit-banded wrapper using moving orifices

#21
20090226617
2009-09-10

PAPERBOARD FOR USE IN WATER RESISTANT PACKAGING

#22
20090104430
2009-04-23

LATHER-FORMING TISSUE PAPER PRODUCT

#23
20070184205
2007-08-09

PAPERBOARD FOR USE IN WATER RESISTANT PACKAGING

#24
20070071899
2007-03-29

Method for increasing moisture content in extrusion coated paperboard

#25
20060166021
2006-07-27

Process for applying a layer of branched polyamide to a substrate

#26
20050257906
2005-11-24

Method and apparatus for treating a web of paper or board

#27
20050172890
2005-08-11

Coater apparatus

#28
20050048300
2005-03-03

Method for increasing moisture content in extrusion coated paperboard

#29
20050031882
2005-02-10

Biodegradable coated substrates