Static dissipative glass filtration fabric
AssigneeBGF Industries, Inc.
InventorScott A. Hunter
Life of this patent
Estimating the term…
Abstract
A bag house filtration system in which the filter media includes a woven textile formed from glass yarns other high temperature resistant yarns. A first bath is applied to the textile which contains a conductive component, a first fluoropolymer and a lubricant (in some cases where the yarns are glass). A second bath containing primarily a second fluoropolymer is then applied to the textile and the first composition to seal the first composition on the textile. The textile, so treated dissipates the static electricity normally generated in the filter media thus reducing excessive buildup of contaminating particles and enhancing cleaning of the bag during use.
Claims36
A static electricity dissipative filter media for a bag house filtration system operated at high temperatures in which the air stream passing through the bag house exceeds 300° F., the filter media comprising:
- a. a woven textile formed primarily from high temperature yarns selected from the group consisting of glass yarns, and yarns formed of PPS, aramid, P84, PTFE, and blends thereof capable of withstanding the high temperatures, but which generates static electricity in the presence of moving air;
- b. the yarns of the woven textile, coated with a first composition comprising a conductive component and a fluoropolymer;
- c. the yarns of woven textile also coated with a second composition on top of the first composition and also containing a fluoropolymer, the second composition serving to seal the first composition onto the yarns of the woven textile and to prevent clogging of the pores of the woven textile;
- d. whereby static electricity in the filter media is dissipated by the conductive component thus reducing excessive buildup of contaminating particles and enhancing cleaning.
A static electricity dissipative filter media for a bag house filtration system operated at high temperatures in which the air stream passing through the bag house exceeds 300° F., the filter media comprising:
- a. a woven textile formed primarily from high temperature yarns selected from the group of glass yarns, and yarns formed of PPS, aramid, P84, PTFE, and blends thereof capable of withstanding the high temperatures, but which generates static electricity in the presence of moving air;
- b. the yarns of the woven textile coated with a, the first composition comprising a conductive component and a fluoropolymer;
- c. the yarns of the woven textile also coated with a second composition on top of the first composition and also containing a fluoropolymer composition serving seal the first composition onto the yarns of the woven textile and to prevent clogging of the pores of the woven textile;
- d. a fluoropolymer porous membrane laminated to at least one side of the woven textile;
- and
- e. whereby static electricity in the filter media is dissipated by the conductive component thus reducing excessive buildup of contaminating particles and enhancing cleaning.
A bag house filtration system operated at high temperatures in which the air stream passing through the bag house exceeds 300° F., comprising:
- a. at least one bag formed from a static electricity dissipative textile filter media;
- b. the filter media including a woven textile formed primarily from high temperature yarns selected from the group consisting of glass yarns, and yarns formed of PPS, aramid, P84, PTFE, and blends thereof capable of withstanding the high temperatures, but which generate static electricity in the presence of moving air;
- c. the yarns of the woven textile, coated with a first composition comprising a conductive component and a fluoropolymer;
- d. the yarns of the woven textile also coated with a second composition on top of the first composition and also containing a fluoropolymer composition serving to seal the first composition onto the yarns of the first composition on the woven textile and to prevent clogging of the pores of the woven textile;
- e. whereby static electricity in the filter media is dissipated by the conductive component thus reducing excessive buildup of contaminating particles and enhancing cleaning.
Dependencies are inferred from the claim text.