Patents
Sitemap › D21 - Paper-making; Production of cellulose › D21F - Paper-making machines; Methods of producing paper thereon
More topics under "D21F - Paper-making machines; Methods of producing paper thereon" (43,436)
D21F 1 - Wet end of machines for making continuous webs of paper (14,078)
D21F 11 - Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibreboard production, on paper-making machines (5,843)
D21F 13 - Methods or apparatus for making discontinuous sheets of paper, pulpboard, or cardboard, or of wet web, for fibreboard production (365)
D21F 2 - Transferring continuous webs from wet ends to press sections (544)
D21F 3 - Press section of machines for making continuous webs of paper (7,045)
D21F 5 - Dryer section of machines for making continuous webs of paper (5,645)
D21F 7 - Other details of machines for making continuous webs of paper (7,211)
D21F 9 - Complete machines for making continuous webs of paper (2,705)
Patents for D21F - Paper-making machines; Methods of producing paper thereon (463)
03/1992
03/25/1992EP0475976A1 Pressurized forming board.
01/1992
01/21/1992CA1294429C Blow box for dryer section
12/1991
12/27/1991EP0334899B1 Apparatus for sequentially drying both sides of a paper web
12/24/1991US5074339 Double layered paper making forming fabric with a coarse structured running side and a fine structured paper side
12/10/1991US5070626 Arrangement for a process plant arranged for the heat treatment of strip-shaped products
10/1991
10/29/1991US5061344 Method of making soft paper
10/29/1991US5060397 Apparatus for heat treatment of material, particularly infra-red radiation of a continuous paper web in a paper machine
10/16/1991EP0330680B1 Reinforced pressing shell for a pressing device for treating strip materials, e.g. paper webs, and process and device for its manufacture
09/1991
09/04/1991EP0332618B1 Method of making soft paper
08/1991
08/21/1991CN1013598B Method and apparatus for drying paper web
08/14/1991EP0288524B1 Procedure and means for drying moving web material
07/1991
07/31/1991EP0438388A1 An apparatus for maintaining the edges of a web in conformity with a dryer felt.
03/1991
03/27/1991EP0418317A1 A process for the restrained drying of a paper web.
02/1991
02/27/1991CN1011799B Dryer felt run
12/1990
12/09/1990WO1990015186A1 Pressurized forming board
10/1990
10/24/1990EP0393110A1 Apparatus for heat treatment of material, particularly infra-red radiation of a continuous paper web in a paper machine.
08/1990
08/28/1990CA1273196A1 Dryer felt run
08/21/1990US4949478 Arrangement for a process plant arranged for the heat treatment of strip-shaped products
07/1990
07/25/1990CN1044135A Method and apparatus for producing para-aramid pulp and pulp produced thereby
06/1990
06/19/1990US4934067 Apparatus for drying a web
02/1990
02/07/1990CN1039460A Process for restrained drying of paper web
01/1990
01/03/1990EP0348398A1 Method and apparatus for spreading pulp to a web.
12/1989
12/14/1989WO1989012138A1 A process for the restrained drying of a paper web
12/13/1989EP0345291A1 Apparatus for drying a web.
12/13/1989EP0345266A1 Apparatus for drying a web.
11/1989
11/28/1989US4882852 Procedure and means for drying moving web material
10/1989
10/04/1989EP0334899A1 Apparatus for sequentially drying both sides of a paper web.
09/1989
09/20/1989EP0332618A1 Method of making soft paper.
09/06/1989EP0330680A1 Reinforced pressing shell for a pressing device for treating strip materials, e.g. paper webs, and process and device for its manufacture.
06/1989
06/29/1989WO1989005883A1 Apparatus for heat treatment of material, particularly infra-red radiation of a continuous paper web in a paper machine
06/22/1989DE3744799A1 Arrangement for a process installation for the heat treatment of web-like products
06/20/1989CA1255871A1 Method and apparatus for forming a web
06/20/1989CA1255870A1 Method and apparatus for forming a web
06/15/1989WO1989005375A1 An apparatus for maintaining the edges of a web in conformity with a dryer felt
02/1989
02/28/1989US4807371 Apparatus for maintaining the edges of a web in conformity with a dryer felt
11/1988
11/17/1988WO1988008897A1 Reinforced pressing shell for a pressing device for treating strip materials, e.g. paper webs, and process and device for its manufacture
11/02/1988EP0288524A1 Procedure and means for drying moving web material.
08/1988
08/25/1988WO1988006205A1 Apparatus for drying a web
08/25/1988WO1988006204A1 Apparatus for drying a web
08/24/1988EP0279609A2 Manufacturing corrugated board
08/11/1988WO1988005840A1 Method and apparatus for spreading pulp to a web
07/1988
07/06/1988CN87107232A Method and apparatus for drying paper web
05/1988
05/05/1988WO1988003193A1 Procedure and means for drying moving web material
04/1988
04/21/1988WO1988002797A1 Double layer paper-making cloth with coarse backing and fine paper side
04/20/1988EP0264001A1 Double layer fabric for a paper making machine having a coarse wear side structure and a fine sheet surface structure
04/07/1988WO1988002416A1 Method of making soft paper
02/1988
02/23/1988CA1233057A1 Closed press section of a paper machine
10/1987
10/28/1987CN87102884A Dryer felt run
08/1987
08/25/1987US4688301 Method and apparatus for forming a web
05/1987
05/05/1987US4662032 Method and apparatus for forming a web
11/1985
11/05/1985CA1196181A1 Film applicator system
01/1985
01/08/1985CA1180547A1 Air knife coater with pivoted lip
12/1982
12/14/1982CA1137387A1 Papermachine dryer fabric
11/1982
11/23/1982US4359964 Air knife coater with pivoted lip
12/1981
12/08/1981CA1113847A1 Corrugated paperboard for trim board and method of producing the same
10/1981
10/20/1981CA1110892A1 Process for making a cellulosic product
12/1979
12/18/1979CA1068103A1 Method of drying a cardboard or a paper web and drying device for applying this method
08/1979
08/28/1979CA1061237A1 Treatment of fibrous material
09/1978
09/12/1978US4112586 Method of drying a cardboard or a paper web and drying device for applying this method
08/1977
08/09/1977US4040899 Production of high strength packaging papers from straw
05/1976
05/04/1976US3954557 Web treatment
05/04/1976US3954554 Multi-ply paper and paperboard having a wet-laid ply and a dry-laid ply
04/1976
04/20/1976US3951102 Roller coating apparatus
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