Charging apparatus for meltblown webs

Details Charging apparatus for meltblown webs Charging apparatus for meltblown webs

1990-09-24

1992-06-16

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Means applying electrical or wave energy directly to work

Electro-static or inductive field

264 22, 425 722, 425464, B29C 7100

Patent

active

051220482

ABSTRACT:
Electrically charged meltblown webs are formed by convergingly discharging electrically charged hot air onto a row of extruded polymer fibers to contact the fibers thereby (i) attenuating and stretching the fibers and (ii) imparting an electric charge to the fibers. The fibers may be continuous or discontinuous.

REFERENCES:
patent: 3372445 (1968-03-01), Maurer et al.
patent: 4009508 (1977-03-01), Sternberg
patent: 4215682 (1980-08-01), Kubik et al.
patent: 4266918 (1981-05-01), Manley
patent: 4316716 (1982-02-01), Lin
patent: 4486365 (1984-12-01), Kliemann et al.
patent: 4904174 (1990-02-01), Moosmayer et al.
patent: 5051159 (1991-09-01), Togashi et al.

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