Post-treatment of non-woven webs

Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Reshaping – drawing or stretching

Patent

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Details

264480, 264484, 264241, 2642888, 2642893, D02J 122

Patent

active

057309230

ABSTRACT:
A method for post-treating a precursor nonwoven web including consolidating the web laterally, thereby reducing the maximum pore size measure of the web and improving the filtration efficiency of the web, and subjecting the consolidated web to an electrostatic field to further enhance filtration efficiency.

REFERENCES:
patent: 5244482 (1993-09-01), Hassenboehler, Jr. et al.

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