Abstract: Hot gas filtration fabrics for bag filters can be made using fibers that include high silica fibers and at least one FR fiber. The fabrics can be made using these fibers by needling and/or water jet entanglement. The fabrics may be treated with binders with or without additives to enhance mechanical properties or to impart other characteristics such as gas adsorption. Certain non-woven fabrics made according to the invention have improved high temperatures filtration capabilities and mechanical properties.
Type:
Grant
Filed:
May 25, 2007
Date of Patent:
July 3, 2012
Assignee:
Propex Inc.
Inventors:
Derek S. Bass, Matthew Stanley Rich, Andries Don Sebastian, William M. Edwards
Abstract: Hot gas filtration fabrics for bag filters can be made using fibers that include high silica fibers and at least one FR fiber. The fabrics can be made using these fibers by needling and/or water jet entanglement. The fabrics may be treated with binders with or without additives to enhance mechanical properties or to impart other characteristics such as gas adsorption. Certain non-woven fabrics made according to the invention have improved high temperatures filtration capabilities and mechanical properties.
Type:
Application
Filed:
May 25, 2007
Publication date:
December 10, 2009
Applicant:
PROPEX INC.
Inventors:
Derek S. Bass, Matthew Stanley Rich, Andries Don Sebastian, William M. Edwards
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.
Abstract: A primary carpet backing that is tuftable with carpet face yarn has a self-bonded or spunbonded or needlepunched nonwoven adhesive fabric needled or thermally bonded to a supporting fabric. The supporting fabric is a tuftable woven primary backing fabric comprising thermoplastic warp and weft yarns having substantially rectangular cross-sections. The nonwoven adhesive fabric comprises fibers or filaments of a thermoplastic resin having flow properties corresponding to a MI of above 30 g/10 min. as measured in accordance with ASTM D 1238 at 190° C. The nonwoven adhesive fabric also has a melting point at least about 20° C. less than a melting point of the thermoplastic of the yarns of the supporting fabric so that the nonwoven-adhesive fabric is capable of melting fully in a final product. The melted fabric can help secure pile to the backing in carpet applications.
Type:
Application
Filed:
July 25, 2007
Publication date:
January 24, 2008
Applicant:
Propex Inc.
Inventors:
Larry Bailey, Edward Barkis, Eric Bryant, Hugh Gardner, Jack Godfrey, Kenneth Jones, Gregory Shelnutt