Method for the production of spun bonded nonwoven fabrics having

Details Method for the production of spun bonded nonwoven fabrics having Method for the production of spun bonded nonwoven fabrics having

1986-10-16

1988-06-28

Massie, Jerome

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156181, 19299, D04H 316

Patent

active

047536985

ABSTRACT:
Disclosed is a method for producing spun bonded nonwoven fabrics which have a highly uniform fleece structure and a uniform weight per unit area. In the method, a plurality of linear ranks of filaments, disposed side by side are spun from a plurality of long spinnerets. The filaments are aerodynamically drawn downward, stretched, and then fixed on a moving screen. The linear ranks of filaments are deflected and set in a pendular movement. The ranks are carried on an air cushion on the moving screen through a spreading section in which the ranks of filaments are turned around and laid down in a criss-crossing and substantially loop-like manner, and are fixed on the screen by vacuum.

REFERENCES:
patent: 3293718 (1966-12-01), Sheets
patent: 3563838 (1971-02-01), Edwards
patent: 3692618 (1972-09-01), Dorschner et al.
patent: 3991250 (1976-11-01), Hartmann et al.
patent: 4217159 (1980-08-01), Ellis et al.
patent: 4578134 (1986-03-01), Hartmann

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