Cigarette filter micropleated web and method of manufacture

Details Cigarette filter micropleated web and method of manufacture Cigarette filter micropleated web and method of manufacture

1992-09-28

1996-07-02

Millin, V.

Tobacco

Smoke separator or treater

Having a polymer

A24D 316

Patent

active

055312357

ABSTRACT:
A meltblown pleated web suitable for manufacturing cigarette filters or filter rods is prepared by drawing a meltblown web having longitudinal bend lines under thermal conditions to impart micropleats along the bend lines. Preferably the drawn and heated and pleated web is passed through an electric field to impart an electrostatic charge to its fibers.

REFERENCES:
patent: 3346682 (1967-10-01), Thomson
patent: 3595245 (1971-07-01), Buntin
patent: 3704192 (1972-11-01), Soehngen et al.
patent: 3888610 (1975-06-01), Brackmann et al.
patent: 3978185 (1976-08-01), Buntin et al.
patent: 4059121 (1977-11-01), Brackmann et al.
patent: 4088731 (1978-05-01), Groome
patent: 4579130 (1986-04-01), Coffman
patent: 4818463 (1989-04-01), Buehning

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