| Patents for 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) |
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| 12/20/1977 | US4063996 Vacuum, pressing |
| 12/13/1977 | US4062721 Use of surfactant to increase water removal from fibrous web |
| 11/29/1977 | US4060449 Electrostatic method and apparatus for making a patterned, non-woven sheet |
| 11/01/1977 | US4056433 Ascending twin-wire paper machine without web pick-up |
| 10/25/1977 | US4055461 Paper machine with single-wire and curved twin-wire formers |
| 09/20/1977 | US4049493 Self-bonding synthetic wood pulp and paper-like films thereof and method for production of same |
| 09/20/1977 | US4049492 Self-bonding synthetic wood pulp and paper-like films thereof and method for production of same |
| 09/20/1977 | US4049491 Dilution; air, fiber and water |
| 09/13/1977 | US4048008 Method of and apparatus for forming sheets of fibrous material between converging sieves |
| 09/06/1977 | US4046622 Multi-ply fibrous sheets having a wet-laid ply and a dry-laid ply |
| 08/16/1977 | US4042453 Tufted nonwoven fibrous web |
| 08/09/1977 | US4040899 Production of high strength packaging papers from straw |
| 07/19/1977 | US4036684 High bulk tissue forming and drying apparatus |
| 07/19/1977 | US4036679 Mechanical treatment |
| 05/03/1977 | US4021295 Method and apparatus for supplying white water from a single silo in the formation of a multi-ply web |
| 04/05/1977 | US4016031 Manufacture of composite materials |
| 04/05/1977 | US4016030 Calendering paper containing thermoplastic contaminants |
| 03/15/1977 | US4012281 Wet laid laminate and method of manufacturing the same |
| 03/15/1977 | US4012279 Process of producing pulp, for manufacture of fiberboard, in a closed backwater system |
| 02/15/1977 | US4008122 Paper making machine with facing felt and forming wire |
| 02/15/1977 | US4008121 Method of curtain coating pigment particles on paper plies |
| 02/08/1977 | US4007083 Method for forming wet-laid non-woven webs |
| 01/25/1977 | US4004968 Consecutive multi-ply formers with an unencumbered doffer felt |
| 12/28/1976 | US4000237 Method for producing a soft, absorbent, unitary, laminate-like fibrous web with delaminating strength |
| 12/21/1976 | US3998690 Fibrous assemblies from cationically and anionically charged fibers |
| 12/07/1976 | US3996098 Twin-wire paper machine with common wire path controls |
| 11/30/1976 | US3994771 Process for forming a layered paper web having improved bulk, tactile impression and absorbency and paper thereof |
| 11/16/1976 | US3992252 Curtain coating apparatus for the manufacture of paperboard |
| 11/02/1976 | US3989587 System for installing endless belts in a machine for making multiple-ply paper products |
| 10/12/1976 | US3985612 Paper making system including forming fabrics and porous forming cylinders |
| 08/31/1976 | US3977937 System for making a non-woven sheet by creating an electrostatic field action |
| 08/10/1976 | US3974025 Absorbent paper having imprinted thereon a semi-twill, fabric knuckle pattern prior to final drying |
| 07/20/1976 | US3970514 Combination-paper machine |
| 07/13/1976 | US3969561 Biaxially oriented nonwoven fabrics and method of making same |
| 06/01/1976 | US3960652 Process of forming wet laid tufted nonwoven fibrous web and tufted product |
| 06/01/1976 | US3960650 Machine and method for making a laminate structure |
| 05/04/1976 | US3954557 Web treatment |
| 05/04/1976 | US3954556 Asbestos, talc, binder |
| 05/04/1976 | US3954555 Fiber reinforced plastic articles and method of preparation |
| 05/04/1976 | US3954554 Multi-ply paper and paperboard having a wet-laid ply and a dry-laid ply |
| 04/20/1976 | US3951736 Single-layer and multi-layer paper making apparatus |
| 02/17/1976 | US3938782 Apparatus for producing a foamed fibre dispersion |
| 01/13/1976 | US3932210 Paper, non-woven fabrics |