Abstract: A fabric filter cover sleeve woven on a flat loom in a manner allows a section of the fabric, having a specified width, to be opened up similar to a tube, sleeve or bag. Several of the tubes (or sleeves, or bags) may be woven on the loom simultaneously. The tubes may be continuous or closed on either or both end in a specified length. For example, a tube closed at one end may be considered a bag shaped filter cover. The fabric filter cover sleeves may be woven of various types of natural and synthetic yarns, such as extruded thermoplastic yarns. The woven fabric filter covers can be easily separated such that each sleeve can enclose, or cover, structures used within filters. Filter structures, such as filter grids, or filtration materials, such as diatomaceous earth, or sand, may be enclosed within the woven fabric sleeves to form filters.

Abstract: A woven fabric pool cover has an antimicrobial agent that reduces/prevents the growth of microbes on the pool cover and in the water of a swimming pool covered by the cover. The fabric cover may be woven from polyolefin extruded monofilaments, and/or fibrillated tape yarns where the yarns have an antimicrobial agent added during the yarn extrusion process or added to fabric formed by the yarns. The fabric may be woven from traditional polyolefin extruded monofilaments, and/or fibrillated tape yarns before the resulting fabric is treated with a antimicrobial agent. Such treatment may involve spraying a solution onto the fabric or also dipping, soaking, or padding the fabric into the treating solution. The antimicrobial agent may form a zone of inhibition around the yarns and may seep out of the fabric to form zones of inhibition in the surrounding environment, like on the cover and/or in swimming pool water.