Abstract:
Die vorliegende Erfindung betrifft ein Verfahren und eine Vorrichtung zum Einbringen eines Fluides in einen Folienschlauch (2), insbesondere zur Herstellung von Beuteln, wobei zunächst ein Folienschlauch (2) extrudiert wird. Der Folienschlauch (2) wird dann parallel zur Längsrichtung des Folienschlauches aufgeschnitten, und in die eingeschnittene Öffnung wird in den Folienschlauch ein Fluid eingesprüht, bevor die eingeschnittene Öffnung durch Verbinden der beiden Lagen des Folienmaterials entlang einer Längsnaht verschlossen wird. Dadurch kann mit exakter Dosierung eine innere Oberfläche des Folienschlauches beschichtet werden.
Abstract:
A slip molding apparatus (10) for lining a pipe (12) includes a dispense head (20) adapted to engage an interior surface (14) of a pipe (12) and to dispense a lining material, a slip mold (38) pulled by the dispense head (20) and having a leading end (42) and a trailing end (44), wherein the trailing end (44) has a greater diameter than a diameter of the leading end (42), at least one camera (58) disposed on the dispense head (20) to provide a view of the interior surface (14) of the pipe (12), a guide (46) connected to the dispense head (20) and the slip mold (38) for guiding the lining material dispensed by the dispense head (20) about the slip mold (38), and a movable diverter (52) on the slip mold (38) cooperating with the guide (46) to divert a flow of lining material dispensed by the dispense head (20) about the slip mold (38).
Abstract:
A pipeline pig—that moves by pressurized gas flow and provides for distribution of treating liquid subsisting in a lower portion of a pipeline—having a longitudinally extending nozzle located at a forward end of the pig, an array of helical-shaped louvers located on the discharge side of the nozzle and arranged circumferentially, and two perforated sealing elements that create a cavity that serves as a low pressure plenum. The louvers create a vortex effect and the perforated sealing elements allow vapor and liquid in front of the pig to be drawn into the cavity and discharged through the ports and back into the discharge of the nozzle. In this manner, liquid subsisting at a bottom portion of the pipeline is dispersed to achieve a complete 360° coating application of the interior cylindrical wall of the pipeline.
Abstract:
The invention relates to methods for forming at least one metal oxide on one or more interior surfaces of closed or partially closed fluid transport or processing systems. The method involves applying at least one metal compound to the interior surfaces to be treated using, for example, one or more traveling applicators, commonly known as "pigs." Then, the at least one metal compound is converted to at least one metal oxide, such as by heating the surfaces. In some embodiments, the at least one metal oxide provides a protective metal oxide coating adhered to those surfaces. Embodiments of the present invention can be performed in situ on existing fluid processing or transport systems.
Abstract:
Methods for coating medical devices ( 12; 22) for implantation within a body vessel include providing a cylindrical container (32), placing a medical device ( 1 2; 22) inside the cylindrical container (32), and applying a polymer in liquid form inside the container (32). The polymer may be applied to a luminal surface and/or to an abluminal surface of the medical device. An apparatus for coating a medical device includes a lumen rotator (30), including rollers (34) for rotating a cylindrical container (32), a source of polymer (36) and an applicator (38) for applying polymer inside the cylindrical container (32).
Abstract:
The present invention relates to coating of tubes, and more particularly to a system (10) and method for coating and/or renovating deteriorated or pitted tubes (18) to extend tube life and enhance performance. Using this system and method a thin coating is applied to the interior of a tube such that the coating is uniform in thickness and covers all regions of the tube. The coating material may be selected to minimize changes in heat transfer or may be selected to provide for the change in working fluid within the tube such that the working fluid does not negatively interact with the tube material.
Abstract:
A method of distributing liquid present in the lower portion of a gas pipeline to the interior upper surface of the pipeline including the steps of passing a pig having a venturi therein, the venturi being actuated by gas pressure taken from within the pig siphoning liquid from a lower interior portion of the pipeline through the venturi and distributing siphoned liquid onto the pipeline upper interior surface.