| 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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| 08/18/1981 | CA1107109A1 Ply-separable paper |
| 08/12/1981 | EP0033559A2 A method of and an apparatus for making imprinted paper |
| 08/04/1981 | CA1106215A1 Paper forming roll construction |
| 07/29/1981 | EP0032772A1 Apparatus for dry forming of paper or other sheet material of particles or fibres |
| 07/23/1981 | WO1981002031A1 A system for dry forming of paper or other sheet material of particles or fibres |
| 07/07/1981 | CA1104400A1 Headbox |
| 06/30/1981 | CA1103917A1 Procedure in tissue paper machine fitted with a flow- through dryer |
| 06/23/1981 | US4274915 Process for manufacturing heat-sealed proofed paper or card on a Fourdrinier machine |
| 06/23/1981 | CA1103413A1 Process for the manufacture of mechanical pulp |
| 06/16/1981 | CA1103137A1 Method of monitoring surface charge of suspended materials colloidal system |
| 06/09/1981 | US4272318 Apparatus for making filter elements for gas or liquid |
| 06/02/1981 | US4270977 Process for preparing water sorptive products |
| 05/28/1981 | WO1981001429A1 Heat seal fibrous web and method of its manufacture |
| 05/27/1981 | EP0029269A1 Layered paper having a soft and smooth velutinous surface, and method of making such paper |
| 05/26/1981 | US4269657 Fibrous product containing cellulosic fibers, its method of preparation and its use, in particular in the field of covering panels, in lieu of asbestos |
| 05/19/1981 | CA1101254A1 Apparatus for making fiberboard |
| 03/24/1981 | US4257843 Method for the production of a matted transparent paper and the product thereof |
| 03/17/1981 | CA1097466A1 Process for the production of paper containing starch fibers and the paper produced thereby |
| 02/10/1981 | CA1095304A1 Wet method of preparing fiberboard products in a substantially closed and balanced white water system |
| 02/03/1981 | CA1094853A1 Method of and apparatus for texturizing untextured dry tissue web |
| 01/27/1981 | US4247364 Method of making a smooth, dimensionally stable, mica-filled, glass fiber sheet |
| 01/20/1981 | CA1093879A1 Forming absorbent tissue paper products with fine mesh fabrics |
| 12/30/1980 | CA1092681A1 Control system for a multi-channel paper machine distributor |
| 12/30/1980 | CA1092403A1 Tissue paper machine |
| 12/23/1980 | US4241007 Method of producing water-absorbent solid cloth-like articles |
| 12/23/1980 | US4240871 Paper forming roll construction |
| 12/16/1980 | US4239593 Multiply paperboard machine |
| 12/16/1980 | US4239591 Manufacture of an non-laminated paper web having regions of increased thickness |
| 12/16/1980 | US4239065 Papermachine clothing having a surface comprising a bilaterally staggered array of wicker-basket-like cavities |
| 12/16/1980 | CA1091493A1 Method and apparatus for texturing and softening non- woven webs |
| 12/09/1980 | US4238284 Method for dewatering a tissue web |
| 12/02/1980 | US4236963 Apparatus for texturing untextured dry tissue web |
| 12/02/1980 | US4236317 Method and apparatus for electrostatically forming a layer of material from a slurry thereof |
| 11/27/1980 | WO1980002575A1 Method and device in a paper making machine |
| 11/26/1980 | EP0019465A1 High strength glass fiber mat particularly useful for roofing products, built-up roofing membranes and systems and method of making such products |
| 10/07/1980 | US4226674 Vacuum deposition from a slurry |
| 09/30/1980 | US4225382 Method of making ply-separable paper |
| 09/17/1980 | EP0015609A1 Soft absorbent imprinted paper sheet and method of manufacture thereof |
| 09/09/1980 | US4221630 Wet method of preparing fiberboard products in a substantially closed and balanced white water system |
| 08/26/1980 | CA1084317A1 Transfer and adherence of relatively dry paper web to a rotating cylindrical surface |
| 08/26/1980 | CA1084213A1 N-sulfohydrocarbon-substituted acrylamide polymers as formation aids for non-woven stock |
| 07/15/1980 | US4212703 Process for the manufacture of laminated sheets of cellulosic and polymeric fibrous materials |
| 07/08/1980 | CA1080915A1 Medium density, high strength, lignocellulose composition board including exhaustively hydrated cellulosic gel binder |
| 05/06/1980 | CA1076862A1 Procedure in the manufacturing of multiply cardboard and web forming unit applying the procedure |
| 04/29/1980 | US4200488 Viscous dispersion for forming wet-laid, non-woven fabrics |
| 04/29/1980 | US4200487 Economical method of making high-strength glass fiber mats particularly useful for roofing products |
| 04/22/1980 | CA1075860A1 Viscous dispersion for forming wet-laid, non-woven fabrics |
| 04/15/1980 | US4198267 Drying |
| 04/15/1980 | CA1075511A1 Process for forming a paper web having improved bulk and absorptive capacity |
| 04/01/1980 | US4196045 Method and apparatus for texturizing and softening non-woven webs |
| 04/01/1980 | CA1074602A1 Process for making soft, high bulk, low density, finely creped sheets |
| 03/25/1980 | US4194947 Transferring a web from a pick-up fabric to a flow-through drying wire |
| 03/25/1980 | US4194945 Filtering material and process for producing same |
| 03/18/1980 | CA1073624A1 Method and an apparatus for distributing a disintegrated material onto a layer forming surface |
| 03/04/1980 | US4191609 Soft absorbent imprinted paper sheet and method of manufacture thereof |
| 02/26/1980 | US4189845 Method and apparatus for electrostatically forming a layer of material from a slurry thereof |
| 02/19/1980 | US4189344 Method of texturing untextured dry sanitary tissue web |
| 02/19/1980 | CA1071912A1 Method of and means for forming multi-ply paper webs from a single headbox |
| 01/15/1980 | CA1069742A1 Pulp sheet formation |
| 01/01/1980 | US4181568 Headbox for a paper machine for the production of a fiber web of at least two plies |
| 12/18/1979 | US4179253 Linear corrugating roll deflection control |
| 11/27/1979 | CA1066934A1 Headbox for a paper machine for the production of a two- or multi-ply fiber web |
| 11/06/1979 | CA1065659A1 Method for the manufacture of a mineral fibre |
| 09/25/1979 | CA1062941A1 Paper machine, in particular one for manufacturing tissue paper |
| 09/11/1979 | CA1062060A1 Plybonding control |
| 09/04/1979 | US4166758 Calendering and embossing |
| 09/04/1979 | CA1061620A1 Selectively mechanically pre-dried paper and system for manufacture of same |
| 08/28/1979 | US4166001 Multiple layer formation process for creped tissue |
| 08/28/1979 | CA1061237A1 Treatment of fibrous material |
| 08/21/1979 | CA1060692A1 Tufted nonwoven fibrous web |
| 08/14/1979 | CA1060200A1 High bulk tissue apparatus |
| 08/08/1979 | EP0003377A1 Ply-separable absorbent paper sheet and process for its manufacture |
| 07/17/1979 | US4161205 Method and apparatus for plybonding control |
| 06/19/1979 | CA1056633A1 Continuous papermaking process |
| 05/29/1979 | CA1055290A1 Machine and process for the production of paper |
| 05/15/1979 | US4154645 Bonded wed, dewatering |
| 05/08/1979 | US4153504 Twin-wire fibrous web former and method |
| 04/24/1979 | CA1053091A1 Machine and method for making a laminate structure |
| 04/24/1979 | CA1053046A1 Fibrous web former and method |
| 04/10/1979 | CA1052158A1 Process for forming a layered paper web having improved bulk, tactile impresion and absorbency and paper thereof |
| 04/10/1979 | CA1052156A1 Pulp |
| 04/10/1979 | CA1052149A1 Tissue paper machine |
| 03/27/1979 | CA1051244A1 Method of treating a continuous web of wood or cellulose pulp and apparatus for carrying out the method |
| 03/13/1979 | US4144124 Machine for manufacturing paper such as tissue paper |
| 03/06/1979 | CA1049822A1 Manufacture of fibrous artefacts |
| 03/06/1979 | CA1049715A1 Process for the preparation of paper sheets coupled to films of polymeric material |
| 02/13/1979 | US4139412 Multi-ply continuous paper web former |
| 02/13/1979 | US4139411 System for forming and treating a narrow multi-layer web |
| 02/13/1979 | CA1048324A1 Process for producing convoluted, fiberized, cellulose fibers and sheet products therefrom |
| 01/02/1979 | CA1045431A1 Method of making biaxially oriented nonwoven fabrics |
| 12/12/1978 | CA1044058A1 Water removal from fiberboard |
| 11/14/1978 | US4125430 Air decompaction of paper webs |
| 10/17/1978 | US4120747 Use of ozone treated chemithermomechanical pulp in a high bulk tissue papermaking process |
| 10/03/1978 | US4118272 Continuous wet-laid process for making high-strength glass fiber mats |
| 09/05/1978 | CA1037754A1 Use of thermomechanical pulp in a high bulk tissue papermaking process |
| 09/05/1978 | CA1037753A1 Method and apparatus for supplying stock in the formation of a multi-ply web |
| 07/25/1978 | US4102737 Process and apparatus for forming a paper web having improved bulk and absorptive capacity |
| 04/25/1978 | US4086130 Control system and method for a multi-channel paper machine distributor |
| 03/28/1978 | US4081319 Continuous papermaking process |
| 01/24/1978 | US4070235 Method of making biaxially oriented nonwoven fabrics |