Melt-blowing die

Details Melt-blowing die Melt-blowing die

1989-03-22

1991-05-21

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Shaping orifice and downstream work contacting gaseous...

Orifice for filaments or fibers

26417713, 425464, B29C 4712

Patent

active

050171127

ABSTRACT:
A melt-blowing die including a plurality of capillaries and orifices is used to obtain more than one flow of a molten resin from the tip portion of the capillary die by providing a plurality of notches on the tip portion of the die. A high-speed gas flows through the notches between the tip portions of the die to divide the resin into more than one flow. The invention prevents fibers from becoming entangled or ball-shaped.

REFERENCES:
patent: 2508462 (1950-05-01), Marshall
patent: 2673121 (1954-03-01), Brennan
patent: 3224852 (1965-12-01), Stalego
patent: 3259479 (1966-07-01), Tiede
patent: 3649232 (1972-03-01), Battigelli
patent: 3649233 (1972-03-01), Battigelli
patent: 3825379 (1974-07-01), Lohkamp et al.
patent: 3954361 (1976-05-01), Page
patent: 4116656 (1978-09-01), Mukai et al.
patent: 4211736 (1980-07-01), Bradt
patent: 4295809 (1981-10-01), Mikami et al.
patent: 4536361 (1985-08-01), Torobin

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