E.i. Dupont De Nemours and Company

Other

Cummins Filtration Ip, Inc.

Anil Kohli

Kurt Hans Wyss

Antoine Schelling

Herman H Forsten

Young H Kim

Glen Edward Simmonds

B Lynne Wiseman

Hageun Suh

Herman Hans Forsten

Glen E Simmonds

A process for forming a laminate of a low basis weight nanoweb and a substrate includes forming a nanoweb on the surface of a collection scrim, and subsequently bringing the nanoweb into contact with a substrate coated with adhesive. The laminate is suitable for use as a gas filtration medium.

Process for forming a laminate of a nanoweb and a substrate and filters using the laminate

A bag filter having a support structure clothed in a filter bag. The cloth of the filter bag is a composite of at least one substrate layer and at least one nanoweb bonded thereto in a face-to-face relationship. The nanoweb is positioned at the surface of the filter bag first exposed to the hot particle laden gas stream and can have a basis weight of greater than about 0.1 gsm.

Thermally stabilized bag house filters and media

A bag filter having a support structure clothed in a filter bag. The cloth of the filter bag is a composite of at least one substrate layer and at least one nanoweb bonded thereto in a face-to-face relationship. The nanoweb is positioned at the surface of the filter bag first exposed to the hot particle laden gas stream and can have a basis weight of greater than about 2 gsm.

Bag house filters and media

This invention relates to a bag filter having a tubular section, a closed end, and an open end; the tubular section comprising a scrimless filter felt consisting essentially of a needle-punched batt of an intimate blend of fibers consisting of 50 to 79 percent by weight meta-aramid staple fiber, and 21 to 50 percent by weight para-aramid staple fiber; said needle-punched batt having a basis weight of from 10 to 17 ounces per square yard (340 to 580 grams per square meter).

Bag filter comprising scrimless filter felt of meta-and-para-aramid staple fiber

This invention relates to a filter felt and bag filters comprising an intimate staple fiber blend of 20 to 75 parts by weight polymeric staple fiber containing a polymer or copolymer derived from a monomer selected from the group consisting of 4,4'diaminodiphenyl sulfone, 3,3&#x2032;diaminodiphenyl sulfone, and mixtures thereof; and 25 to 80 parts by weight of a heat resistant staple fiber selected from the group consisting on meta-aramid fiber, acrylic fiber, polyphenylene sulfide fiber, and para-aramid fiber; based on 100 parts by weight of the polymeric fibers and heat resistant fibers in the felt.

Filter felts and bag filters comprising blends of fibers derived from diamino diphenyl sulfone and heat resistant fibers

This invention relates to a bag filter having a tubular section, one closed end and one open end, the tubular section having a nonwoven felt comprising an intimate fiber blend of 50 to 80 parts by weight polyphenylene sulfide fiber and 20 to 50 parts by weight acrylic fiber, based on the total weight of polyphenylene sulfide and acrylic fibers in the felt, wherein the acrylic fiber has an equal or lower denier per filament than the polyphenylene sulfide fiber.

Bag filter comprising polyphenylene sulfide and acrylic fiber

This invention relates to a bag filter having a tubular section, one closed end and one open end, the tubular section having a nonwoven felt comprising an intimate fiber blend of 50 to 80 parts by weight meta-aramid fiber and 20 to 50 parts by weight acrylic fiber, based on the total weight of meta-aramid and acrylic fibers in the felt, wherein the acrylic fiber has an equal or lower denier per filament than the meta-aramid fiber.

Bag filter comprising meta-aramid and acrylic fiber

The present invention provides a cardable fiber blend which forms a moldable fiber batt, the blend comprising fibers having a modulus of 550 g/denier or more with fibers of a thermoplastic polymer wherein the high modulus polymer fibers are all uncrimped fibers or a mixture of crimped and uncrimped fibers. The moldable batt is useful in making speaker cones.

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Midlothian, VA, United States of America

Anil Kohli