Abstract:
A technique for fabricating a resistor on a flexible substrate (10) (28). Specifically, at least a portion of a polyimide substrate (10) (28) is activated by exposure to a ion sputter etch techniques. A metal layer (14) (36) is depositing over the activated portion (12) (34) of the substrate (10) (28), thereby resulting in the formation of a highly resistive metal-carbide region (16) (38). Interconnect layers (18, 20) (40, 42) are deposited over the metal-carbide region (16) (38) and patterned to form terminals (24, 26) (44, 46) at opposite ends of the metal carbide region (l6) (38). The metal-carbide region (16) (38) is patterned to form a resistor between the terminals. Alternatively, only a selected area of the polyimide substrate (10) (28) is activated. The selected area forms the area in which the metal-carbide region (16) (38) is formed. Interconnect layers (18, 20) (40, 42) are disposed over the metal-carbide region (16) (38) and patterned to form terminals (24, 26) (44, 46) at opposite ends of the metal-carbide region (16) (38).
Abstract:
The invention relates to a method of increasing the surface tension (wettability) of an element made from silicon which is cross-linked by polyaddition, using a liquid composition comprising one or more polydimethylsiloxanes (PDMS) alpha , omega -dimethylvinyl, one or more poly(dimethyl)(methylhydrogensiloxy) alpha , omega -dimethylhydrogen-siloxane, optionally a silicon resin, optionally an ethynylcyclohexanol-type cross-linking retarder, optionally an adhesion promoter (vinyltrimethoxysilane/3-glycidoxypropyltrimethoxysilane/butyl titanate) and a platinum cross-linking catalyst. According to the invention, the silicon surface is treated with uniform atmospheric plasma using a plasma projection device consisting of a rotary head comprising one or more plasma nozzles which are offset in relation to the axis of rotation and which can each generate a plasma jet having an axis parallel to said rotation axis. More specifically, but not exclusively, the articles in question are made from silicon coating/flexible support (e.g. textile) composite materials. The invention is suitable for affixing silicon surfaces which are cross-linked by polyaddition =Si-H / =Si-vinyl.
Abstract:
L'invention a pour objet une unité de filtration (1) destinée à permettre la déleucocytation sélective d'un fluide contenant des plaquettes sanguines tel que le sang ou un composant sanguin, du type comprenant une enveloppe extérieure (2) munie d'au moins un orifice d'entrée (3) et d'au moins un orifice de sortie (4), l'enveloppe (2) renfermant un élément poreux (5) comprenant un milieu de déleucocytation (8) par adsorption et/ou par filtration des leucocytes, le milieu étant formé d'au moins une couche (9) de non-tissé à base de polyuréthanne qui a été traité par plasma gazeux. L'invention concerne également des systèmes à poches comprenant une telle unité.
Abstract:
The density of hydroxyl groups present on the surface of glass, such as E-glass fibers, is increased by subjecting the surface to a radio frequency induced gas plasma containing water vapor. Surfaces so treated exhibit enhanced adsorption of hydrolyzed organo silane coupling agents applied to improve adhesion between glass fibers and resin matrices in the manufacture of reinforced composites.
Abstract:
A tetrafluoroethylene-ethylene copolymer (ETFE) film, wherein polar groups are present on the surface of the film after a surface treatment, and the surface roughness R a is at most the surface roughness R a of the surface of an untreated film; an ETFE film, wherein polar groups are present on the surface of the film after a surface treatment, and the amount of a weak boundary layer is at most one time of the amount of a weak boundary layer on the surface of an untreated film; a laminate employing such a film having an extremely excellent bonding strength; and a process for producing it with a mass production property.
Abstract:
A method of preparing a fluoropolymer composite tube comprising the steps of forming a fluoropolymer substrate (1, 14), and thereafter layering and chemically bonding the fluoropolymer with a thermosetting or thermoplastic elastomer (1, 16). The fluoropolymer substrate (1, 14) can be activated by subjecting the substrate to a charged gaseous atmosphere which contacts the substrate. Thereafter, a layer of a thermosetting or thermoplastic elastomer is applied to the activated fluoropolymer substrate resulting in a stronger chemical bond. The ionizing step can be described as a mixed gas plasma discharge or an electrically formed plasma. The thermosetting elastomer can contain a curing agent. In particular, this invention describes a fuel pipe comprised of an inner fluorocarbon layer having electrostatic discharge resistance and hydrocarbon evaporative emission resistance, and on top of and integral with the fluorocarbon layer, an outer layer of a thermosetting or thermoplastic elastomer chemically bonded to the fluorocarbon layer. Fluoropolymer layers have excellent chemical resistance.