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Class 264/469 - Plasma (e.g., corona, glow discharge, etc.)


Subclass of Class 264 - Plastic and nonmetallic article shaping or treating: processes
Definition: Processes wherein the energy applied consists of a gaseous
No. of patents: 79
Last issue date: 11/29/2011


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NumberTitleIssue Date
8066934Process of confection of polyamide compounds with natural fibers and compounds of polyamides with natural fibers
The present invention relates to a process of production of polyamide compounds with natural fibers and polyamide compounds with natural fibers, establishes the fact of using natural fiber to obtain a compound with mechanical properties close to the one obtained wit...
11/29/2011
8029723Method for making shaped filtration articles
Shaped filtration articles are made from a monocomponent nonwoven web formed by flowing first and second fiber-forming materials of the same polymeric composition through first and second die cavities in respective fluid communication with first and second sets of o...
10/04/2011
7303861Apparatus and method for making a forming structure
A method for making a forming structure having columnar protrusions extending therefrom comprising the steps of exposing a liquid photosensitive resin to light having an activating wavelength thereby inducing partial curing of the photosensitive resin to form a mono...
12/04/2007
7253214Oxidation-resistant and wear-resistant polyethylenes for human joint replacements and methods for making them
The present invention presents methods for making oxidation-resistant and wear-resistant polyethylenes and medical implants made therefrom. Preferably, the implants are components of prosthetic joints, e.g., a bearing component of an artificial hip or knee joint. Th...
08/07/2007
7217472Electrolyte support member for high differential pressure electrochemical cell
A support member is useful for supporting membranes such as solid polymer electrolyte ion exchange membranes such as those used in electrochemical cell applications. The support member has a first lattice pattern on a first side of a single piece of material. A seco...
05/15/2007
7217463Machine direction oriented polymeric films and methods of making the same
This invention relates to a film comprising a machine direction oriented polymeric film prepared from (A) at least one propylene homopolymer or copolymer or lend of two or more thereof, wherein (A) has a melt flow rate from about 6 to about 30 and (B) an olefin elas...
05/15/2007
7179413Flash-spinning process and solution
A process for the preparation of plexifilamentary film-fibril strands of synthetic fiber-forming polymer comprises the steps of generating a spin fluid and flash-spinning the spin fluid to form plexifilamentary film-fibril strands of the synthetic fiber-forming poly...
02/20/2007
7056726membrane for encapsulation chamber of cells producing at least a biologically active substance and bioartificial organ comprising same
The invention concerns a semipermeable chamber for encapsulation of cells producing at least a biological substance of interest, characterised in that it consists of a porous polycarbonate biocompatible film modified at the surface by generated polar sites and cover...
06/06/2006
6972276Process for making amine compounds
There is provided a process for producing amine reaction product, in particular suitable for industrial process, whereby high yields of the amine reaction product is obtained. This is achieved by having a selected temperature range upon the contacting of the amine c...
12/06/2005
6953544Method 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 respirator body such that air passes through it before being inhaled by a resp...
10/11/2005
6908582Method for adjusting the shape of a biodegradable and bioabsorbable implant material
A process for producing a biodegradable and bioabsorbable implant material, which comprises forging a billet comprising and biodegradable and bioabsorbable crystalline polymer at a low temperature and then forging the same once more or in a plurality of times at a l...
06/21/2005
6858275Irradiated multilayer film having seal layer containing hyperbranched polymer
An irradiated multilayer film has a first layer and a second layer. The first layer is an outer heat seal layer containing a blend of a highly branched homogeneous polymer and a semicrystalline polymer. The highly branched homogeneous polymer has at least 40 branche...
02/22/2005
6790405Polyolefin film with embossed surface
An embossed, cast polyolefin film or an embossed, oriented polyolefin film includes: (a) a core layer including a propylene polymer; (b) an embossed outer layer on one side of the core layer, the embossed outer layer including an olefin polymer capable of being embo...
09/14/2004
6774155Method 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 based resin, paste, preform billet, or extrudate, and employing the tr...
08/10/2004
6761965Irradiated multilayer film having seal layer containing hyperbranched polymer
An irradiated multilayer film has a first layer and a second layer. The first layer is an outer heat seal layer containing a blend of a highly branched homogeneous polymer and a semicrystalline polymer. The highly branched homogeneous polymer has at least 40 branche...
07/13/2004
6660210Method 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....
12/09/2003
6638470Flash-spinning process and solution
A process for flash-spinning a web of plexifilamentary film-fibril strands of synthetic fiber-forming polymer and laying down the web to form a nonwoven batt material therefrom is provided. The process includes the the step of generating a spin fluid cons...
10/28/2003
6632384Process for producing resin molded article
There is provided a process for producing a resin molded article, which includes the steps of: (1) molding a thermoplastic resin to obtain a resin molded articles; and (2) flame-treating the surface of the resin molded article to obtain a flame-treated...
10/14/2003
6602457Process of making high dielectric non-woven fabrics
The present invention relates to high dielectric non-woven fabrics and their synthetic process and more particularly, relates to a process for preparing high dielectric non-woven fabrics including the steps of (a) mix-spinning polyvinylidene fluoride (PVD...
08/05/2003
6573311Method 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 based resin, paste, preform billet, or extrudate, and emplo...
06/03/2003
6503439Process for forming shaped articles of ultra high molecular weight polyethylene suitable for use as a prosthetic device or a component thereof
Disclosed is a method of producing a shaped article suitable for use as the load bearing component of a prosthetic device formed from ultrahigh molecular weight polyethylene. polyethylene....
01/07/2003
6419871Plasma 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 about 0.03 g/m2 to about 1.5 g/m2 ; elec...
07/16/2002
6379605Process 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, the invention relates to a process for producing a three lay...
04/30/2002
6368543Process using single screw extruder for producing a three layer co-extrusion biaxially oriented polypropylene synthetic paper of thickness 25~250 μm
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 screw extruders By means of an improvement of a process fo...
04/09/2002
6364988Process for producing a 3-layer co-extruded biaxially oriented polypropylene synthetic paper of thickness 25-250 μm
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 process for producing a 3-layer biaxially-oriented PP synthetic...
04/02/2002
6287505Self-tuning material and method for manufacturing the same
Self-tuning materials which can efficiently emit or receive radio waves in spite of being simple in their construction and small in their dimension, and are applied to patch antenna, wave directors or the like. Metallic chips containing two or more kinds ...
09/11/2001
6156256Plasma catalysis of carbon nanofibers
A process for forming carbon nanofibers by means of pyrolyzation with plasma in a reactor is disclosed. The process includes the steps of: providing, in a reactor, a first catalyst in the form of solid catalytic particles; applying a vacuum to the reactor...
12/05/2000
6136414Embossed sheet and a method of producing a laminate including that sheet
An embossed sheet which is excellent in embossing properties, whitening resistance and transparency, can be prepared by using a resin composition containing specific ratios of (A) polypropylene having a specific melting point of 125° C. or higher, (B) et...
10/24/2000
6136439Monolayer 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 vinyl-acetate or methacrylate, to form a unitary mixture pri...
10/24/2000
6007902Multi-layer structure with heat stable high barrier polymer, method therefor and product therefrom
A substrate coated with a liquid crystal polymer with an intervening tie layer. A second embodiment provides a surface layer disposed on the LCP layer, sandwiching the LCP layer between the surface layer and the substrate. Methods for constructing the abo...
12/28/1999
5882739Methods for improved drying performance of a dishwasher and resulting products thereof
The present invention provides a method for improving the drying performance of a dishwasher and the resulting products thereof. The method involves chemically treating a dishwasher component to alter or modify the chemical properties of the surface, rend...
03/16/1999
5762857Method for producing nonwoven web using pulsed electrostatic charge
A method and apparatus is provided to cause deflection or oscillation of a bundle of spun thermoplastic filaments. A pulsing electrostatic charge and optionally an additional constant charge is applied to attenuated filaments prior to deposit of the filam...
06/09/1998
5723088Process for the production of a heat-sealable oriented multilayer polyolefin film
An oriented multilayer polyolefin film which includes a base layer containing polypropylene, and at least one heat-sealable outer layer. In one embodiment, the base layer contains a tertiary aliphatic amine and an amide of a water-insoluble carboxylic aci...
03/03/1998
5707580Flash-spinning process
An improved apparatus and process for flash-spinning plexifilamentary film-fibrils are provided in which a static mixing device is provided in the conduit through which the polymer and spin agent are provided to the spin orifice of the flash spinning appa...
01/13/1998
5676791Device for producing extrusion-coated laminates
The invention describes a device and a process for producing extrusion-coated laminates. The extrusion device contains an extruder nozzle with nozzle lip, a cooling roller and a contact roller, wherein the cooling roller and the contact roller form a roll...
10/14/1997
5645788Making highly oriented multilayer film
An oriented multilayer film comprises a barrier layer of polymerized ethylene vinyl alcohol, and an orientation-compatible polymeric layer having a modulus of at least about 4×104 psi. The a barrier layer occupies from about 2 to 15 volume per...
07/08/1997
5643525Process for improving electrostatic charging of plexifilaments
The efficiency of electrostatic charging of polyolefin web in a process for flash-spinning polyolefin plexifilament from solution in a C4 -C7 hydrocarbon, forming the plexifilament into a web, electrostatically charging the web, and ...
07/01/1997
5626813Process for the production of a transparent polyolefin multilayer film
A process for the production of a transparent, printable, biaxially oriented polyolefin multilayer film which can be sealed on both sides including (i) coextruding through a flat die melts corresponding to the individual layers of the film, (ii) taking of...
05/06/1997
5624627Process for preparing surface-modified biaxially oriented film of high molecular weight polyethylene
The biaxially oriented films of high molecular weight polyethylene is formed and its surface modified to provide a hydrophilic property to the resulting film. The film is prepared by melt-kneading the high molecular weight polyethylene with an ordinarily ...
04/29/1997
5601775Process for making an abrasion resistant quasi monofilament
A quasi monofilament having a high strength polyethylene fiber core with an adherent, abrasion resistant polymer sheath is prepared by feeding the core yarn through a crosshead die, while simultaneously supplying a polymer melt at a temperature greater th...
02/11/1997
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