Preparation For Fiberglass Air Filtration Media

Abstract

A system and method of forming fiberglass air filtration media is disclosed which does not require the use of oil additives. A mixture of resin binder, polymer, and dry adhering agent is formed and applied to the fiberglass as it spins onto the drum. Additionally, the fiberglass filtration media density can vary such that the fiber on the air inflow is less dense than the fiber on the air outflow. After oven curing, the finished air filtration media has an improved ability to attract and hold dust and other contaminants.

1 - 18 . (canceled) 
     
     
         19 . A method for producing fiberglass filtration media, comprising:
 preparing a mixture comprising:
 an isotactic polymeric acrylate; 
 a polybutene; and 
 a urea formaldehyde; and 
   applying the mixture to continuous fiberglass filaments.   
     
     
         20 . The method in accordance with  claim 19 , comprising:
 forming the continuous fiberglass filaments into a fiberglass media wherein volumetric weight is lower on an air inflow surface of the fiberglass media and volumetric weight is higher on an air exit surface of the fiberglass media.   
     
     
         21 . The method in accordance with  claim 19 , comprising:
 forming the continuous fiberglass filaments into a fiberglass mat; and   expanding the fiberglass mat to form a fiberglass comprising a progressive density of continuous fiberglass filaments between an air inflow surface of the fiberglass media and an air exit surface of the fiberglass media.   
     
     
         22 . The method in accordance with  claim 19 , wherein the continuous fiberglass filaments comprise filaments with a diameter of 21 to 25 microns. 
     
     
         23 . The method in accordance with  claim 19 , wherein the mixture comprises:
 from 20 to 40 percent isotactic polymeric acrylate;   from 1 to 5 percent polybutene; and   from 55 to 79 percent urea formaldehyde.   
     
     
         24 . The method in accordance with  claim 19 , wherein the mixture comprises:
 30 percent isotactic polymeric acrylate;   3 percent polybutene; and   67 percent urea formaldehyde.   
     
     
         25 . A method for forming air filtration media, comprising:
 combining an isotactic polymeric acrylate, a dry adhering agent, and a resin binder together to form a composition;   spraying the composition onto continuous fiberglass filaments collected on a surface.   
     
     
         26 . The method of  claim 25 , wherein
 the dry adhering agent comprises polybutene; and   the resin binder comprises urea formaldehyde.   
     
     
         27 . The method in accordance with  claim 25 , wherein the mixture comprises:
 from 20 to 40 percent isotactic polymeric acrylate;   from 1 to 5 percent dry adhering agent; and   from 55 to 79 percent resin binder.   
     
     
         28 . The method in accordance with  claim 25 , wherein the mixture comprises:
 30 percent isotactic polymeric acrylate;   3 percent dry adhering agent; and   67 percent resin binder.   
     
     
         29 . The method in accordance with  claim 25 , comprising:
 forming the continuous fiberglass filaments into a fiberglass media wherein volumetric weight is lower on an air inflow surface of the fiberglass media and volumetric weight is higher on an air exit surface of the fiberglass media.   
     
     
         30 . The method in accordance with  claim 25 , comprising:
 forming the continuous fiberglass filaments into a fiberglass mat; and   expanding the fiberglass mat to form a fiberglass comprising a progressive density of continuous fiberglass filaments between an air inflow surface of the fiberglass media and an air exit surface of the fiberglass media.   
     
     
         31 . The method in accordance with  claim 25 , wherein the continuous fiberglass filaments comprise filaments with a diameter of 21 to 25 microns.