Abstract: Filter media and filters are provided that are formed from extruded reticular structures, such as nettings or meshes, and may be used in a variety of demanding filter applications that require high resistance to elevated temperatures, chemical reactions, corrosion, stress-cracking and wear. A filter media comprises an extruded reticular structure comprising an array of intersecting monofilaments or strands bonded to each other. The strands each have a thickness of about 4 mils to about 8 mils and comprise a high-temperature thermoplastic material. The high-temperature thermoplastic material is selected to resist deformation at elevated temperatures to avoid compromising the integrity of the filter and to exhibit thermal stability such that it can endure continuous service at elevated temperatures.

Abstract: Support membranes for filters are described that include a support sheet formed of a polymeric material and a continuous base section having opposed outer surfaces and spaced-apart ribs extending outwardly from at least one of the opposed outer surfaces. The spaced-apart ribs define continuous flow channels bound by the adjacent spaced-apart ribs. The ratio of the height of the ribs to the height of the continuous base ranges from about 2:1 to about 5:1. This relatively high aspect ratio of the ribs and the base layer increases the performance of the filter and reduces the cross-flow pressure drop of fluids filtered through the membrane.

Abstract: Support membranes for filters are described that include a support sheet formed of a polymeric material and a continuous base section having opposed outer surfaces and spaced-apart ribs extending outwardly from at least one of the opposed outer surfaces. The spaced-apart ribs define continuous flow channels bound by the adjacent spaced-apart ribs. The ratio of the height of the ribs to the height of the continuous base ranges from about 2:1 to about 5:1. This relatively high aspect ratio of the ribs and the base layer increases the performance of the filter and reduces the cross-flow pressure drop of fluids filtered through the membrane.

Abstract: A device for slitting a tubular workpiece into strips includes radially disposed cutting members. The device may include a tapered infeed mandrel for maintaining tension on the tubular workpiece being slit and optionally an exit mandrel. In embodiments, the position of the radially disposed cutting members may be adjustable.

Abstract: A device for slitting a tubular workpiece into strips includes radially disposed cutting members. The device may include a tapered infeed mandrel for maintaining tension on the tubular workpiece being slit and optionally an exit mandrel. In embodiments, the position of the radially disposed cutting members may be adjustable.