Process for producing precision cartridge filter

Details Process for producing precision cartridge filter Process for producing precision cartridge filter

1991-07-02

1993-07-06

Tentoni, Leo B.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156167, 156173, 156184, 1562722, 264 23, 264 25, 264115, 264121, 264125, 264171, 264173, 2642093, 264518, 264555, D04H 316

Patent

active

052250148

ABSTRACT:
A precision cartridge filter having an average filter diameter of 10 .mu.m or less is produced by preparing a web composed of conjugate microfine fibers by a conjugate melt-blowing process, wherein the conjugate microfine fibers have a lower melting point component, a higher melting point component, and a melting point difference between the lower melting point component and higher melting point component of 20.degree. C. or more; followed by heating and molding the web at a temperature greater than or equal to the melting point of said lower melting point component, but less than the melting point of said higher melting point component.

REFERENCES:
patent: 4021281 (1977-05-01), Pall
patent: 4197156 (1980-04-01), Nakajima et al.
patent: 4726901 (1988-02-01), Pall et al.
patent: 4861633 (1989-08-01), Abe

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