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7425245 |
Fibrous sheets
This invention is directed to improvements in fibrous sheets, such as paper, incorporating an elongate impermeable element, to a method of making such paper and to documents made therefrom. The...
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7422660 |
Method of producing a nonwoven material
Method of producing a nonwoven material, includes forming a web of continuous filaments on a forming member ( 12 ) and applying a wet- or foam formed fiber dispersion containing natural fibers...
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7399379 |
Process of attaching reinforcing ply to ply containing mica-rich and mica-poor faces
The present invention relates to a sheet structure for electrical insulation or flame resistance comprising a barrier ply having a mica-rich face and a mica-poor face and a reinforcing ply...
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6784126 |
High pulp content nonwoven composite fabric
A high pulp content nonwoven composite fabric is disclosed. The composite fabric contains 1) from more than about 0 to less than about 30 percent, by weight, of a nonwoven layer of conjugate spun...
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6616803 |
Making paper
This invention is directed to improvements in paper incorporating an elongate impermeable element, to a method of making such paper and to documents made therefrom. The invention therefore...
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6592713 |
Method of producing a nonwoven material
Method for producing a nonwoven material comprising at least one layer of continuous filaments, such as spunbond- or meltblown fibers. A first web of continuous filaments ( 19 ) are laid on a wire...
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6485608 |
Manufacture of plain bearings
The bearing comprises a metal backing, a sintered layer on said metal backing, and a lining layer infiltrated into pores of the sintered layer and standing proud thereof to provide a bearing...
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6402888 |
Security paper comprising localized areas with reduced thickness and opacity, and method for making same
A method for making a paper sheet comprising at least one region which is thinner than the rest of the sheet. According to the method, a first paper layer ( 3 ) is formed on a wire in a first wet...
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6355140 |
Method of manufacturing anti-falsification paper
A method of manufacturing a thread-inserted window paper produces paper in which a thread is exposed to windows which are intermittently formed, and have clear contours, and in which thread is...
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6348133 |
Smooth textured wet-laid absorbent structure
A smooth-textured non-woven, superabsorbent particle-impregnated fibrous structure is disclosed. The web exhibits an improved smooth surface texture. The structure contains from 50% to 80% of ion...
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6030497 |
Paper web and process for making the same
A multi-ply paper web comprises a base ply of a post-manufactured sheet such as reused old newsprint or reused office waste. An upper and/or lower ply bonded to the base ply covers any printing or...
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5989389 |
Method of producing visible, continuous streaks and/or delimited fields in paper
The invention relates to a method of producing visible, preferably transparent or translucent, continuous streaks and/or delimited fields in paper in conjunction with forming a paper web in a paper...
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5928472 |
Paper web and process for making the same
A multiply paper web comprises a base ply of a post-manufactured sheet such as reused old newsprint or reused office waste. An upper and/or lower ply is bonded to the base ply to cover any printing...
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5795377 |
Method for modifying papermaking sludge and products made from modified papermaking sludge
Papermaking sludge can be modified to a modeling clay-like consistency by the addition of one or more dispersing agents, such as polyacrylamide. The modified papermaking sludge can be formed into a...
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5744000 |
Method for making encoded filaments and use of encoded filaments to produce security paper
The invention is concerned with the production of filaments or fibers each of which carries a recognizable "signature" (encoding). These filaments or fibers are produced by taking a film...
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5567276 |
Paper of value and a method of producing it
The present invention relates to a paper of value having an embedded security element, preferably an optically variable element in the form of hologram, diffraction or interference structures...
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5405500 |
Method for making sheet materials and security paper
This invention relates to a method of making sheet materials and security paper having partially embedded therein an elongate security element which is at least substantially exposed at one surface...
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5389202 |
Process for making a high pulp content nonwoven composite fabric
A high pulp content nonwoven composite fabric is disclosed. The composite fabric contains more than about 70 percent, by weight, pulp fibers which are hydraulically entangled into a continuous...
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5368695 |
Method for producing an acoustic vibration plate
An acoustic diaphragm employed in a speaker or the like and a method for producing the acoustic diaphragm are disclosed. A diaphragm substrate is a diaphragm exhibiting air permeability, such as a...
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5161829 |
Security paper and method of manufacturing the same
A security paper includes at least two layers of paper each having inner and outer surfaces and predetermined mechanical properties, color and optical density. Authentication indicia is printed on...
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5055160 |
Security paper with rigid segments
A hybrid band that includes rigid segments into a paper web being formed in a paper manufacturing process. The band includes a carrier that has an adhesive surface for mounting the rigid segments...
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5020581 |
Process for inserting rigid segments in security paper
A process for inserting rigid segments into a paper web being formed in a paper manufacturing process that includes the use of a paper forming screen roll, including the steps of cutting segments...
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4990405 |
Multi-ply composites and sheets of epoxy and flocced 2:1 layered silicates
Sheets and laminated composites are described which are prepared with epoxy and flocculated vermiculite and mica dispersions. Processes and procedures are also described to obtain film and sheet...
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4877484 |
Flocced 2:1 layered silicates and water-resistant articles made therefrom
Disclosed are flocced mineral materials which may be utilized to prepare high temperature resistant, water resistant articles. These materials are prepared by utilizing, as a starting material, a...
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4761205 |
Security paper for currency and banknotes
Security devices in the form of metalized plastic films are incorporated within a security paper such as banknotes and other valuable documents during the papermaking process for viewing solely by...
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4606805 |
Electrolyte permeable diaphragm and method of making same
A method for making an electrolyte permeable diaphragm, and the diaphragm thus produced, wherein an aqueous slurry, containing as its principal particulate ingredient a water-wettable, insert,...
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4557810 |
Bonded asbestos diaphragms
The hydrophilicity and other properties of fluoropolymer-bonded asbestos diaphragms for use in brine electrolysis cells are improved by incorporating Na 2 CO 3 into the aqueous slurry from which...
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4552617 |
Security features in paper
Security features for authentification of currency paper are incorporated within the paper during the paper making process. Various codes are incorporated within the paper for viewing by means of...
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4534398 |
Security paper
This invention relates to a security paper document incorporating counterfeit deterrent, optical variable devices that display their optically active properties in reflectance when there are...
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4478680 |
Method for treating electrolytic diaphragm
A method for treating an electrolytic diaphragm formed by adhering asbestos fibers to the surface of an electrolytic cathode made of a wire mesh or porous plate, which comprises permeating water...
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4462867 |
Paper incorporating a partially embedded strip
A method of forming a paper comprises depositing paper fibres onto a support surface from a furnish by drainage, laying a strip having fibre deposition blocking regions and fibre deposition...
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4462866 |
Sheet materials
A sheet material such as paper is provided during manufacture with an elongate element partially disposed within the thickness of the paper sheet but exposed at spaced locations one one side of the...
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4437935 |
Method and apparatus for providing security features in paper
A security device is integrally combined with the fibres of the paper in a paper-making process. A carrier web of water-dispersible fibres carrying the security element is brought into contact with...
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4347104 |
Moisture-insensitive electrically-conductive paper
Electrically-conductive paper comprising a mixture of electrically-conductive fibers, wood pulp and synthetic wood pulp, the ratio between the two types of pulp being so selected that the...
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4038131 |
Short cycle pressed fiberboard manufacturing process
Pressed fiberboard is produced in an S-1-S type process at much shorter than normal (prior art) press cycles. The process includes the use of fiber furnish having preselected shrinkage...
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3960650 |
Machine and method for making a laminate structure
This invention comprehends a machine for producing a composite laminate structure wherein one layer is a base material, such as a non-woven fabric, a second layer, interspersed with the first...
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3957558 |
Method and apparatus for making a molded pulp product with a liquid impervious layer integrally secured thereon
A method and apparatus are disclosed for making a molded pulp product such as a plate or the like which has an upper liquid impervious layer integrally secured thereon. The pulp product is formed...
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3880706 |
Security paper containing fused thermoplastic material distributed in a regular pattern
A method of making security paper such as paper for currency notes and paper made by the method. The method comprises incorporating in the body of the paper thermoplastic material, such as...
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3867252 |
Twin-wire multi-ply paper making machine
A multi-ply paper forming system wherein a vertically-oriented twin-wire papermaking machine having horizontal stringers leading to a converging vertical gap is utilized. Multiple fibrous plies are...
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3864206 |
Structurally Supported, Dimensionally Accurate, Shaped Articles and Method of Producing the Same
A method of producing dimensionally accurate, structurally supported, shaped articles includes forming a wet felted mat of pulped fibers on a foraminous forming mold, filling a hollow portion of...
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3661700 |
COATED REINFORCED PAPER AND PROCESS FOR PREPARING SAME
Coated reinforced papers having excellent mechanical and other characteristics are obtained by coating a net-like support obtained from a longitudinally oriented film of polypropylene consisting...
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3308013 |
Compressible mat of whole wood fibers and uncured resin as overlay for wood product and process of making same
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3275497 |
Method of molding a combustion element of ceramic fibers on a porous support
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3205123 |
Method and apparatus for applying a plastic sheet to a pulp molded article on the mold
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3158532 |
Tapered pore filter elements
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3106508 |
Moulded articles
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3084091 |
Method of making battery separator from plastic encapsulated fibers
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3039913 |
Reinforced resin sheet
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2992152 |
Method of forming a board product
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2913365 |
Fibrous webs and method and apparatus for making same
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