Patents
Sitemap › D21 - Paper-making; Production of cellulose › D21H - Pulp compositions; Preparation thereof not covered by subclasses ,; Impregnating or coating of paper; Treatment of finished paper not covered by class or subclass; Paper not otherwise provided for › D21H 23 - Processes or apparatus for adding material to the pulp or to the paper
Patents for D21H 23 - Processes or apparatus for adding material to the pulp or to the paper (8,452)
09/1989
09/27/1989EP0185068B1 Papermaking process
09/26/1989US4869957 Blend of polyvinyl butyral and melamine resin
09/21/1989WO1989008742A1 Retention and drainage aid for papermaking
09/20/1989EP0333417A2 Coating process
09/20/1989EP0333368A2 Paper sizing method
09/20/1989EP0332618A1 Method of making soft paper.
09/19/1989US4867828 Method of in-line production of successive barrier-and silicone-coated inexpensive porous and absorbent paper and similar substrates, and products produced thereby
09/19/1989US4867097 End dam
09/12/1989CA1259153A1 Production of paper and paperboard
09/06/1989EP0331656A1 Coating method and coating slip for fibrous sheet material
09/05/1989US4863287 Waxed bag with wax-free area
08/1989
08/30/1989EP0330635A1 Substantially inorganic fibrous material and method for the production thereof
08/29/1989US4860686 Coating width regulating apparatus
08/23/1989EP0328756A1 Base paper for photographic supports
08/22/1989US4859507 High speed paper coaters
08/15/1989US4857149 Method and products for sizing paper and similar materials
08/15/1989US4856454 Applicator mechanism for coating running webs
08/08/1989CA1258205A1 Pattern forming saturator and method
08/08/1989CA1258163A1 A coater for coating a running paper or cardboard web
08/01/1989US4853086 Hydrophilic cellulose product and method of its manufacture
07/1989
07/25/1989EP0282571A4 Processes for the production of antistatic or static dissipative paper, and the paper products thus produced, and apparatus utilized.
07/18/1989US4849278 Flexible, durable, stretchable paper base web
07/18/1989US4849055 Process for making paper using a substituted succinic anhydride as a sizing agent
07/18/1989US4848268 Apparatus and method for applying a liquid to a moving web
07/13/1989WO1989006294A1 Method of reducing pitch in pulping and papermaking
07/12/1989EP0323732A2 Cellulosic fibre - and chitosan-based composite material and a method for the preparation thereof
07/04/1989US4844777 (meth)acrylate coating hardened by electron beams
07/04/1989US4844002 Coating feeder system
06/1989
06/13/1989US4839201 Fluid moves parallel to base to seal and/or lubricate
06/07/1989EP0319503A2 Method and device for application and dosage of coating material onto a moving base
06/06/1989US4837070 Cellulose web with rubber coating
06/06/1989US4836134 Device for coating a web of material
06/06/1989US4836129 Apparatus for coating a web with wet ink thereon
05/1989
05/23/1989CA1254424A1 Calender roll and use of a fibrous material for the production thereof
05/10/1989EP0315297A1 Method of in-line production of successive barrier and silicone-coated inexpensive porous and absorbent paper and similar substrates, and products produced thereby
05/02/1989US4826714 Impregnated corrugted sheets for packing boxes and method of manufacture
04/1989
04/25/1989US4824689 Method for producing virucidal tissue products containing water-soluble humectants
04/20/1989WO1989003259A1 Spreading appliance
04/20/1989WO1989003258A1 Spreading appliance
04/20/1989WO1989003257A1 Squeegee mechanism
04/20/1989WO1989003256A1 Blade-coating mechanism
04/19/1989EP0312244A2 Drawdown machines
04/19/1989EP0311745A1 Coating device
04/19/1989EP0311744A1 Coating device
04/19/1989EP0311743A1 Squeegee device
04/18/1989US4821672 Doctor blade assembly with rotary end seals and interchangeable heads
04/12/1989EP0310959A1 Process for producing a neutral paper
04/06/1989WO1989002952A1 Market paper pulp, process for making market paper pulp and use of such pulp in papermaking
03/1989
03/29/1989EP0308752A2 Method for dewatering paper
03/22/1989EP0307443A1 Wrapping material, method of manufacture and method of use.
03/16/1989DE3729548A1 Process for introducing pulverulent chemicals into fibrous materials
03/07/1989US4810329 Composite flooring felt for vinyl flooring containing latexes and an activator
03/07/1989CA1250703A1 Papermaking process
03/01/1989EP0304463A1 A process for the production of paper.
02/1989
02/28/1989US4808445 Coating apparatus and method
02/23/1989WO1989001500A1 Thermosetting size press composition
02/22/1989EP0303790A1 Manufacture of coloured egg packages
02/21/1989US4806410 Processes for the production of antistatic or static dissipative paper, and the paper products thus produced, and apparatus utilized
02/09/1989WO1989001072A1 Method for manufacture of paper products
02/01/1989EP0301079A1 Transfer coating for decorative laminates
02/01/1989CN1030777A Surface sizing compositions
01/1989
01/25/1989EP0300909A1 Reinforced thermoplastics sheet and its manufacturing process
01/25/1989CN1030531A Process for producing water resistant construction material of polymer and silicate
01/17/1989US4798653 Anionic acrylamide polymer, cationic silica sol
01/17/1989US4798574 Method of making a bag with a barrier material
01/17/1989CA1248712A1 Paper sheet, process for preparing same and applications thereof particularly as product for substituting impregnated webs
01/10/1989US4797176 Amino plast crosslinking agent for hydroxy monomer
01/10/1989US4796559 Apparatus for applying a liquid to a web of material
01/10/1989US4796557 Device for application with use of web vibration absorber
01/04/1989EP0297500A1 Thermoformable fibrous mat and process for making the same
01/04/1989EP0297125A1 Pattern forming saturator and impregnating method
01/03/1989US4795531 Method for dewatering paper
01/03/1989US4795530 Treating surface of a cellulosic fibrous web with a chemical debonding agent
12/1988
12/29/1988WO1988010337A1 Manufacture of coloured egg packages
12/28/1988EP0296971A1 Continuous process for producing a printing/writing paper and perfumed product obtained
12/28/1988EP0296729A1 Surface sizing compositions
12/27/1988US4793899 Papermaking machine
12/20/1988US4791879 Apparatus for coating running webs
12/15/1988WO1988009845A1 Method in the drying of a paper web or equivalent
12/15/1988WO1988009700A1 Method and apparatus for coating a paper web
12/15/1988DE3725893C1 Process and device for coating and for smoothing the coating
12/13/1988US4790906 Sizing, chopping and freezing wet fibers; slurrying
12/06/1988US4789564 Hydridoaminosilane treatment for rendering surfaces water-repellent
12/06/1988US4789430 Dimensional stability; resistance to delamination
11/1988
11/30/1988EP0292975A1 Sizing pulp
11/30/1988EP0292624A1 Apparatus for and methods of airlaying fibrous webs having descrete particles therein
11/24/1988DE3815764A1 Endabdichtung fuer eine kurzverweilzeit-streicheinrichtung End seal for a kurzverweilzeit-striking device
11/22/1988US4786532 Noncurling, nontoxic
11/22/1988US4786367 Chemically treated paper products--towel and tissue
11/15/1988CA1244617A1 Method for preparing paperlike products from fibers treated with polymer
11/09/1988EP0290194A1 Method of producing cast coated paper
11/09/1988EP0289824A2 Apparatus for coating a moving paper or cardboard web
11/08/1988US4783240 Pulp slurry, alumina polymer, and agglomerated particles of urea-formaldehyde resin and silicic acid
10/1988
10/26/1988EP0287759A1 Apparatus for coating a sheet material
10/19/1988EP0286755A2 Coating feeder system
10/18/1988US4778696 Method of manufacturing impregnated corrugated sheets for packing boxes
10/18/1988US4778694 Method for application with use of web vibration absorber
10/05/1988EP0285487A1 Paper making processes
10/05/1988EP0285486A1 Process for producing packaging paper and board
10/05/1988EP0285227A1 A process for preserving paper sheets or webs and a device for carrying out that process
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