Abstract:
A backside textured papermaking belt is disclosed which is comprised of a framework and a reinforcing structure. The framework has a first surface which defines the paper-contacting side of the belt, a second surface opposite the first surface, and conduits which extend between first and second surfaces of the belt. The first surface of the framework has a paper side network formed therein which defines the conduits. The second surface of the framework has a backside network with passageways that provide surface texture irregularities in the backside network. The papermaking belt is made by applying a coating of photosensitive resinous material to a reinforcing structure which has opaque portions, and then exposing the photosensitive resinous material to light of an activating wavelength through a mask which has transparent and opaque regions and also through the reinforcing structure. A process for making paper products is also disclosed which involves applying a fluid pressure differential from a vaccum source through the belt to a partially-formed embryonic web of papermaking fibers. The fibers in the embryonic web are deflected into the conduits of the papermaking belt by the vaccum pressure while the papermaking belt and the embryonic web travel over the vaccum source. Following the deflection, the paper web is impressed with the paper side network of the belt, and dried to form the final product.
Abstract:
Process for stepwise construction of a plastic pipe having, from the interior outwards, an inner separating film, an inner skin, an intermediate layer of high resin content with a nonwoven fibre inlay, several alternate axial and tangential reinforcing layers of fibre strands embedded in synthetic resin, an outer skin and an outer separating film. The device (10) for implementing the process has the requisite work stations arranged on a common basic frame (16) on which a stationary elongated mandrel (22) is held by a holding device (21). A feed and shaping device (23, 26, 27) for the tubular separating film (25), a feed device (33) for the synthetic resin of the inner skin, a heating device (43) to initiate hardening of the inner skin, a feed device (48) for a fibrous nonwoven (51) for the intermediate layer, several feed devices (55) for each synthetic resin layer are arranged along the mandrel. Between them are alternate feed devices (15, 63) for axial and tangential strands which form the corresponding reinforcing layers, as well as annular doctor blades (41, 61) for scraping off excess synthetic resin and for securing in particular the layers with fibrous inlays, a feed device for the synthetic resin of the outer skin, a feed and shaping device for feeding the outer separating film, a heating station for initiating hardening of the various synthetic resin layers with subsequent curing sections, a drawing device with chain conveyor for drawing the plastic pipe, a flying separating device for subdividing the endless plastic into standard commercial lengths and finally a pipe store.
Abstract:
Die Erfindung betrifft ein Verfahren zur Elektronenstrahlvernetzung eines flexiblen Kunststoff-Schlauches (1) mittels mindestens einer Elektronenstrahlquelle (2), wobei der Kunststoff-Schlauch (1) zweckmäßigerweise mindestens eine Schlauchschicht (7) aus vernetzbarem Kunststoffmaterial, vorzugsweise Polyethylen, aufweist. Der flexible Kunststoff-Schlauch (1) wird in kontinuierlicher Weise mit einer, vorzugsweise konstanten, Transportgeschwindigkeit (v) einer die Elektronenstrahlquelle (2) aufweisenden Vernetzungseinrichtung (5) zugeführt und in der Vernetzungseinrichtung (5) erfolgt durch Elektronenbestrahlung (E) des kontinuierlich an der Elektronenstrahlquelle (2) vorbeilaufenden Kunststoff-Schlauches (1) eine Vernetzung des Kunststoff-Schlauches (1).
Abstract:
This invention provides a Polymer Fiber and Polymer Optical Fiber (POF) wherein said polymer is a hydrogel. This invention further provides a process for preparing water-absorbent and superabsorbent acrylate polymer fibers and polymer optical fibers, and provides encapsulated, biodegradable, renewable and functional hydrogel fibers and hydrogel optical fibers prepared according to the process of this invention.
Abstract:
An apparatus for forming a silicone article is disclosed. The apparatus includes an pumping system to deliver the silicone formulation to a die, the silicone formulation having a viscosity of less than about 2,000,000 centipoise; the die having a distal end, a proximal end, and a channel there between, wherein the silicone formulation flows through the channel of the die; and a source of radiation energy, wherein the radiation energy substantially cures the silicone formulation as the silicone formulation flows out the channel of the die to form the silicone article. The present disclosure further includes a method of forming the silicone article, a silicone tube, and a silicone extrudate.
Abstract:
Le procédé comprend successivement une application d'une solution aqueuse contenant un liant dilué dans la solution,sur des fibres minérales ou végétales, une mise en forme des fibres en un matelas continu sur un con- voyeur en mouvement, et un chauffage du matelas en défilement dans une étuve par flux d'air chaud à une température supérieure à la température de durcissement du liant.En outre, est réalisé un séchage au moins partiel du matelas et préalable à l'entrée dans l'étuve. Ledit séchage au moins partiel inclut une irradiation du matelas en défilement au moyen d'ondes électromagnétiques radiofréquences dont la fréquence est située entre 3MHz et 300GHz.
Abstract:
Die vorliegende Erfindung betrifft einen bandförmigen faserverstärkten Verbundwerkstoff, welcher eine Faserstruktur umfasst, die mit einem Matrixmaterial imprägniert ist, welches wenigstens einen Thermoplasten enthält, wobei wenigstens eine der Flachseiten des bandförmigen faserverstärkten Verbundwerkstoffs eine Oberflächenprofilierung aufweist, wobei die Oberflächenprofilierung wenigstens eine Vertiefung umfasst, die sich von einer der Längsschmalseiten des bandförmigen faserverstärkten Verbundwerkstoffs aus durchgehend über wenigstens 30% der Breite des bandförmigen faserverstärkten Verbundwerkstoffs erstreckt. Ferner betrifft die vorliegende Erfindung ein Verfahren zur Herstellung eines bandförmigen faserverstärkten Verbundwerkstoffs.
Abstract:
Methods for making differentially pattern cured microstructured articles are disclosed, using a molding tool having a microstructured surface, a patterned irradiation to generate irradiate and non-irradiated regions in a radiation curable resin. Different combinations of molding tools and patterned irradiation provide numerous variants of differentially pattern cured microstructured articles without requiring costly modification of the molding tools.
Abstract:
The invention relates to a filamentized fiber reinforced putty compound, to parts made from said putty, and to devices and methods for manufacturing both the putty and the parts. The compound of the invention is formed by a chopped fibers composition including monofilaments that have been broken down from chopped strands and a UV and/or chemical curable resin composition and is a ready-to-mold plastic putty used in molding, mainly by continuous lamination/pultrusion/extrusion and injection. The putty fiber reinforcement, whose weight makes up between 10 and 50% of the total weight of the putty, more particularly in the range of 20 to 40%, is formed by one of the group consisting of at least one type of chopped strands that has been entirely broken down into filaments, and at least one type of chopped strands that has been entirely broken down into filaments in combination with at least one type of chopped strands that has been left intact; each one of the types of fibers involved in the same composition is chopped in one or more lengths of between 3 and 50 mm, with the bulk preferably being between 12 and 30 mm; the percentage of the fiber filaments in the putty being the amount necessary and sufficient to capillarity reinforce the resin thoroughly and everywhere in the putty.
Abstract:
An ultraviolet radiation curing system (10) is disclosed for treating a substrate (26), such as fiber optic cable or silicone tubing. The system (10) comprises a processing chamber (12) allowing transport of a continuous piece of substrate (26) to be treated. As the substrate (26) moves through the processing chamber (12), ultraviolet radiation from a plasma lamp (34) activated by a microwave generator (36) treats the surface of the substrate (26). The system (10) comprises two elliptical reflectors (42, 46) of different sizes so that larger diameter substrates may be efficiently treated with ultraviolet radiation. The system (10) may also comprise an ultraviolet-transmissive conduit (54) enclosing the substrate (26) and split into a first portion (84) and a second portion (86), where the second portion (86) is movable from the first portion (84) to open the conduit (54) and allow insertion or alignment of the substrate (26) within the conduit (54) and processing chamber (12).