Patent ID: 7655070
Filing Date: 2010-02-02
Classification: B01D,C12M,C12N,Y02E,Y10T

Abstract:
1. A filter media comprising a non-woven filter substrate and a fiber layer or fiber web comprising a substantially continuous fine fiber layer formed on the non-woven filter substrate, the fiber having a diameter of about 0.001 to 5 microns and an active spacer particulate dispersed in a substantially uniform manner in the fiber layer or fiber web, the particulate comprising 0.1 to 50 vol % of the layer or web and the layer or web having a thickness of about 0.0001 to 1 cm and a solidity of about 0.1 to 70%; wherein the active particulate comprises about 0.001 to 10 kg per square meter of the layer or web, and wherein solidity of a fine fiber layer without the active spacer particulate is greater than the solidity of a fine fiber layer formed with the active spacer particulate.