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6953544 |
Method of making a respirator that has a fluorinated electret
A method of making a respirator, which method includes placing an electret in a respirator body that is adapted to fit over the nose and mouth of a wearer. The electret is disposed in the...
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6939389 |
Method and apparatus for manufacturing fine powders
The manufacture of pure, fine spherical powders has always been a problem for many materials, particularly for high-melting and highly reactive materials such as titanium, tantalum, vanadium and...
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6774155 |
Method for treating polymer materials and products produced therefrom
The invention is directed to methods for fabricating devices from polymer precursors, along with devices so fabricated. The methods of the invention include the steps of plasma treating a polymer...
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6669823 |
Process for preparing nanostructured materials of controlled surface chemistry
A process to prepare stoichiometric-nanostructured materials comprising generating a plasma, forming an “active volume” through introduction of an oxidizing gas into the plasma, before the...
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6660210 |
Method of making fluorinated electrets
An electret is described that includes a plasma surface modified polymeric article having plasma surface fluorination produced by fluorinating the polymeric article.
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6579604 |
Method of altering and preserving the surface properties of a polishing pad and specific applications therefor
The present invention is directed, in general, to an improved material and method of planarizing a surface on a semiconductor wafer and, more specifically, to a method of altering the properties of...
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6419871 |
Plasma treatment of filter media
The present invention is drawn to an improved electrostatic filter medium comprising a web of electret fibers which have been treated with fluorine-containing plasmas at a deposition amount of...
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6379605 |
Process for producing a 3-layer co-extruded biaxial-oriented polypropylene synthetic paper and transparent film for in-mold label
Disclosed is a process for producing a three layers co-extrusion biaxially oriented polypropylene (hereinafter as BOPP) synthetic paper and transparent film for in-mold label. More particularly,...
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6368543 |
Process using single screw extruder for producing a three layer co-extrusion biaxially oriented polypropylene synthetic paper of thickness 25˜250 &mgr m
Disclosed is an improvement of a process for producing a three layers co-extrusion biaxially polypropylene(BOPP) synthetic paper of thickness 25˜250 μm which is menufactured by using three single...
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6364988 |
Process for producing a 3-layer co-extruded biaxially oriented polypropylene synthetic paper of thickness 25-250 &mgr m
Disclosed is a process for producing a 3-layer co-extruded biaxially polypropylene (hereinafter as BOPP) synthetic paper of thickness 25-250 μm. More particularly, the invention relates to a...
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6136439 |
Monolayer polymeric film and method of fabrication
A monolayer printable polymeric film and method for making the film. The film is formed by mixing a structural material, such as polypropylene or polyethylene, with a printable material, such as...
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6080471 |
Non-woven fabric for alkali cell separator and process for producing the same
The present invention provides a non-woven fabric for an alkali cell separator capable of preventing active materials from transfer, and having distinguished electrolyte solution absorbability and...
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6068799 |
Method of making electret articles and filters with increased oily mist resistance
An electret article can be made by quenching a molten blend containing a polymer and a performance-enhancing additive. The resulting low crystallinity material can be annealed and charged to...
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5688465 |
Method of corona treating a hydrophobic sheet material
A method of preventing localized arcing to ground during treatment of a sheet material in a corona discharge field generated by a corona discharge apparatus having at least two electrodes, which...
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5643507 |
Filter media having an undulated surface
Filter media is provided. The filter media comprises a web of melt blown microfibers having one surface substantially flat and the other surface having periodic wrinkle-like undulations. A method...
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5552011 |
Process of 3-layer co-extruded biaxial oriented polypropylene (BOPP) synthetic paper
The present invention is related to a process of manufacturing polyproylene (PP) synthetic paper and the product thereof, and particularly to a process of manufacturing synthetic paper by means of...
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5496507 |
Method of charging electret filter media
A method of charging a nonwoven web of thermoplastic microfibers to provide electret filter media is provided. The method includes impinging on a nonwoven web of thermoplastic nonconductive...
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5275766 |
Method for making semi-permeable polymer membranes
A method for making a semi-permeable microporous polymer sheet, useful as a separation membrane or the like, including extruding a melt-blended mixture of a high-temperature thermoplastic polymer...
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5207909 |
Plasma polymer membrane (C-2564)
The present invention is a membrane for separating aromatics from feeds which are mixtures of aromatics and saturates and for separating saturated linear hydrocarbons from feeds which are mixtures...
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5073316 |
Process for producing a porous film
A process for producing a porous film comprising polyolefin resin, a filler and an ester of dipentaerythritol having a ratio 3 to 70% residual OH groups.
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4976856 |
Process for preparing non-porous, selective membrane layers
The invention relates to a process for preparing non-porous, selective membrane layers by contacting a permeable, continuous substrate (e.g. comprising a non-porous, permeable intermediate layer...
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4929401 |
Method of making a reusable adhesive product
A method for making removable, reusable adhesive products from soft, solvent-free rubber compositions is disclosed. The rubber compositions are packed together by molding them into thin coatings...
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4778634 |
Process for the manufacture of porous film
A vapor and liquid permeable porous film suitable for disposable sanitary apparel structures is produced by first abrading an unoriented film by passing it through at least one set of at least two...
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4548769 |
Process for producing semipermeable membrane
A process for producing a semipermeable membrane having a high flux, excellent in solute rejection and useful for reverse osmosis, ultrafiltration and the like which comprises dipping a...
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4283359 |
Process for producing polyacrylonitrile reverse osmotic membranes
A process for producing polyacrylonitrile membranes for use in reverse osmosis, which comprises dissolving an acrylonitrile polymer in formamide (FA)-containing dimethylformamide (DMF) to prepare...
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3992495 |
Method of manufacturing a semipermeable membrane from a water-soluble polymeric resin
Ultrathin membranes for separating substances are obtained by exposing shaped articles comprising a water-soluble polymer or a mixture of a water-soluble polymer and water-insoluble polymer to a...
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3880966 |
Corona treated microporous film
Crystalline elastic polymeric films having a crystallinity of at least 20 percent and an elastic recovery of at least 40 percent after subjection to a 50 percent extension at 25°C. and 65 percent...
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3846521 |
LOW ENERGY ELECTRON BEAM TREATMENT OF POLYMERIC FILMS, AND APPARATUS THEREFORE
Polymeric films are exposed to a low energy electron beam in order to alter the permeability characteristics of the polymeric films for gases. The so treated polymeric films have enhanced utility...
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3491009 |
ODOR REDUCTION IN LOW DENSITY MEDIUM IMPACT POLYSTYRENE FOAM
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