| Patents for D21H 27 - Special paper not otherwise provided for, e.g. made by multi-step processes (13,797) |
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| 12/08/1981 | US4304625 Using a polyvinyl acetate-ethylene copolymer emulsion and a water-soluble polyvinyl alcohol to retain the paper web on the drier; papermaking |
| 11/24/1981 | US4302282 Creping |
| 11/17/1981 | US4300981 Layered paper having a soft and smooth velutinous surface, and method of making such paper |
| 11/10/1981 | CA1112087A1 Method for controlling caliper and edge and corner delamination of hardboard |
| 11/04/1981 | EP0038884A1 Method of making flexible wallcoverings and wallcoverings so made |
| 10/27/1981 | US4297410 Absorbent material |
| 10/27/1981 | US4297402 Packaging bag |
| 10/27/1981 | US4297144 High speed corrugating adhesives |
| 10/21/1981 | EP0038136A1 Fibrous materials |
| 10/20/1981 | US4295976 Fluorinated anti-stain and soil release finishes |
| 10/20/1981 | CA1110892A1 Process for making a cellulosic product |
| 10/13/1981 | US4294655 Method and apparatus for forming fiberglass mats |
| 10/13/1981 | CA1110414A1 Paper having good absorbency and alkali resistance |
| 10/07/1981 | EP0036883A1 Release coatings. |
| 10/06/1981 | US4293677 Vinylpolysiloxane, organohydrogensiloxane |
| 10/06/1981 | US4293458 Paraffin, zeolite, wallpaper pretreatment |
| 10/06/1981 | US4293378 Enhanced wet strength filter mats to separate particulates from fluids and/or coalesce entrained droplets from gases |
| 09/29/1981 | US4292366 Two laminar sheets, reinforcing strands |
| 09/29/1981 | CA1109709A1 Absorbent papers |
| 09/15/1981 | US4289821 Surface replication on a coated substrate |
| 09/15/1981 | US4289669 Alkali-soluble hot melt adhesive compositions |
| 09/15/1981 | US4289580 Heat seal fibrous web and method of its manufacture |
| 09/08/1981 | US4288497 Silicone-coated article and process for production thereof |
| 09/08/1981 | US4288462 Method for removing cationic contaminants from beverages |
| 09/02/1981 | EP0034791A1 Three-dimensional structural wall paper |
| 08/25/1981 | US4286166 Device for electron irradiation of rolled materials |
| 08/19/1981 | EP0033988A2 Method of making a pattern densified fibrous web having spaced, binder impregnated high density zones |
| 08/18/1981 | CA1107109A1 Ply-separable paper |
| 08/12/1981 | EP0033559A2 A method of and an apparatus for making imprinted paper |
| 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 |
| 07/22/1981 | EP0032258A1 Insulating wall coating |
| 07/21/1981 | CA1105487A1 Process for continuously producing oxygen-containing compounds |
| 06/30/1981 | US4276339 Laminated foam-creped paper product and method of production thereof |
| 06/30/1981 | CA1245965B Abrasion-resistant laminate |
| 06/30/1981 | CA1104051A1 Abrasion-resistant laminate |
| 06/30/1981 | CA1103968A1 Packing paper and method of making same |
| 06/09/1981 | US4272580 Decorative parchment paper |
| 06/02/1981 | US4271221 A pigment, binder and dispersion of an amino resin condensate |
| 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 | US4269578 Apparatus for forming a web of material |
| 05/19/1981 | CA1101366A1 Method for applying a silicone release coating and coated article therefrom |
| 05/05/1981 | CA1100269A1 Creping paper using cationic water soluble polymer |
| 04/21/1981 | US4263093 Method for retaining textured surface of pressed ceiling board |
| 04/21/1981 | US4263081 Abrasion-resistant laminate |
| 04/21/1981 | US4263073 Separating with alginate-coated sheets |
| 04/07/1981 | CA1098687A1 Brown cigarette wrappers |
| 04/02/1981 | WO1981000818A1 Release coatings |
| 03/31/1981 | US4259386 Screen printing foamable composition on woodchip paper |
| 03/24/1981 | US4257842 Using cellulose and fibers of a thermoplastic polymer |
| 03/10/1981 | US4255480 Mineral and microcrystalline cellulose coating, thermosetting resin and binder |
| 02/24/1981 | US4252761 Process for making spontaneously dispersible modified cellulosic fiber sheets |
| 02/24/1981 | CA1096289A1 Sheet-type wall covering or ceiling covering |
| 01/27/1981 | US4247318 Process for making security paper from film-fibril sheets |
| 01/27/1981 | CA1094280A1 Sheet type wallcovering or ceiling covering |
| 01/20/1981 | CA1093879A1 Forming absorbent tissue paper products with fine mesh fabrics |
| 01/14/1981 | EP0022153A1 Process for producing a decorative finished effect sheet |
| 01/13/1981 | US4244990 Preimpregnation with urea resin |
| 01/07/1981 | EP0021588A1 No overlay decorative laminates coated with melamine-formaldehyde resin and methods for producing the same |
| 01/07/1981 | EP0020901A1 Heat-reflecting wallpaper or wall-facing |
| 12/30/1980 | US4242283 Process for continuously producing oxygen-containing compounds |
| 12/16/1980 | CA1091493A1 Method and apparatus for texturing and softening non- woven webs |
| 12/11/1980 | WO1980002655A1 No-overlay decorative laminates |
| 12/09/1980 | US4238280 Heat consolidation of thermoplastic fiber paper |
| 12/02/1980 | US4236532 Smoking rod wrapper |
| 11/18/1980 | US4234378 Magnetoplubite barium or strontium ferrite, cationic polyelectrolyte, anionic polymer latex |
| 11/11/1980 | CA1089224A1 Wall coverings |
| 11/04/1980 | US4232074 Reinforced paper product and method for the manufacturing thereof |
| 10/01/1980 | EP0016358A1 Process and device for manufacturing textile wall coverings or wall coverings of material resembling textile |
| 10/01/1980 | EP0016356A1 Process and device for manufacturing textile wall coverings or wall coverings of material resembling textile |
| 09/23/1980 | CA1086153A1 Decorative synthetic resin sheets having three- dimensional pattern for walls, ceiling or furniture and process for manufacturing same |
| 09/17/1980 | EP0015609A1 Soft absorbent imprinted paper sheet and method of manufacture thereof |
| 09/09/1980 | CA1085128A1 Method for production of fibrous sheet material and apparatus for carrying out the same |
| 08/26/1980 | CA1084403A1 Reinforced sheet-type wallcovering |
| 08/26/1980 | CA1084317A1 Transfer and adherence of relatively dry paper web to a rotating cylindrical surface |
| 08/26/1980 | CA1084227A1 Electrostatic dry former |
| 08/20/1980 | EP0014347A1 Coating composition applied on the backside of adhesive papers |
| 08/19/1980 | US4218286 Paper having good absorbency and alkali resistance and method of making said paper |
| 08/12/1980 | CA1083599A1 Soil repellent product for easy stain removal by simple washing |
| 07/29/1980 | CA1082583A1 Laminating method for producing pressure-sensitive adhesive coated substrates having a release layer affixed thereto |
| 07/22/1980 | CA1082088A1 Reinforced corrugated paper board and method of producing the same |
| 07/15/1980 | US4212703 Process for the manufacture of laminated sheets of cellulosic and polymeric fibrous materials |
| 07/15/1980 | CA1081426A1 Method of manufacturing fibreboard |
| 07/09/1980 | EP0013267A1 Method of making laminated products |
| 07/01/1980 | US4210692 Overlay sheet and wood laminate |
| 06/10/1980 | US4207379 Substrate web coated with a thermosetting coating resin |
| 05/20/1980 | US4204016 Reinforced paper products |
| 05/20/1980 | US4203790 Method of forming wire reinforced corrugated board |
| 05/13/1980 | CA1077317A1 Treated gypsum wallboard paper |
| 04/08/1980 | US4196559 Swellable fabrics for ceiling structures |
| 04/08/1980 | CA1075141A1 Thin, tough, stable laminate |
| 04/02/1980 | EP0009322A1 Absorbent papers and a process for their production |
| 04/01/1980 | US4196045 Method and apparatus for texturizing and softening non-woven webs |
| 04/01/1980 | CA1074684A1 Thin, tough, stable, mar-resistant laminate |
| 04/01/1980 | CA1074602A1 Process for making soft, high bulk, low density, finely creped sheets |
| 03/18/1980 | USRE30233 Printable top layer containing wear resistant mineral particles |
| 03/04/1980 | US4191609 Soft absorbent imprinted paper sheet and method of manufacture thereof |
| 02/26/1980 | US4190688 Silicone paper release compositions |
| 02/12/1980 | US4188220 Nonstretching olefin polymers |