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Glass fiber filtration media with at least two different fiber diameters

a technology of glass fiber and filtration media, applied in the field of filtration media, can solve problems such as unsuitability for use as a filtration media

Inactive Publication Date: 2006-05-04
SUPERIOR FIBERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0020]FIG. 3 is a table showing the MERV, pressure drop and particle size efficiency values for three

Problems solved by technology

The characteristics of this mat make it unsuitable for use as a filtration media.

Method used

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  • Glass fiber filtration media with at least two different fiber diameters

Examples

Experimental program
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Embodiment Construction

[0022] The preferred embodiment of the present invention uses a bushing plate 10, shown in FIG. 1, having orifices of at least two different sizes. In one embodiment, the smaller orifices 12 are formed by a size 25 drill resulting in an orifice diameter of 0.1495 inches, which forms fibers having a diameter in the range of about 16 to 22 microns, with an average fiber diameter of about 19 microns. The larger orifices 14 are formed using a size 22 drill resulting in an orifice diameter of 0.1570 inches, which forms fibers having a diameter in the range of about 26 to 32 microns, with an average fiber diameter of about 29 microns. Of course, the particular diameters noted herein are not the only orifice diameters. Other orifice sizes are contemplated, and will be apparent to the person having ordinary skill upon examining the description herein.

[0023] The orifices are formed in rows within a rectangular region on the bushing plate 10 shown in FIG. 1. The orifices of different size al...

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Abstract

A method of forming filtration media, and the media so formed. The media has glass fibers of at least two substantially different diameters, such as 18 microns and 21 microns. Each of the glass fibers is continuous throughout the media and is substantially the same diameter along its entire length. The fibers can be made using a bushing plate in the Modigliani process in which the plate has orifices of at least two different sizes. The fibers made thereby have two different sizes, thereby resulting in a filtration media superior to conventional media, despite having a similar amount of glass and no more weight.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS [0001] This application claims the benefit of U.S. Provisional Application No. 60 / 625,028 filed Nov. 4, 2004.STATEMENT REGARDING FEDERALLY-SPONSORED RESEARCH AND DEVELOPMENT [0002] (Not Applicable) REFERENCE TO AN APPENDIX [0003] (Not Applicable) BACKGROUND OF THE INVENTION [0004] 1. Field of the Invention [0005] This invention relates generally to filtration media, and more specifically to glass fiber filtration media. [0006] 2. Description of the Related Art [0007] A known method for making fiberglass is described in several patents to Modigliani: U.S. Pat. Nos. 2,546,230; 2,609,320; and 2,964,439 are incorporated herein by reference. These patents disclose an apparatus in which a slowly reciprocating, melting furnace feeds molten glass through spinning orifices which discharge an array of fine, continuous glass filaments or fibers that are wrapped circumferentially around a rapidly rotating drawing drum. The melting furnace uses a bushing ...

Claims

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Application Information

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IPC IPC(8): D02G3/00
CPCB01D39/2017Y10T428/2913D04H3/07B01D2239/064
Inventor WILKINS, RODNEY R.
Owner SUPERIOR FIBERS