Method for producing laterally spread reticular web of split fib

Details Method for producing laterally spread reticular web of split fib Method for producing laterally spread reticular web of split fib

1974-08-23

1976-05-04

Rimrodt, Louis K.

Textiles: fiber preparation

Assembling

Formed web

28DIG1, D04H 1100

Patent

active

039539091

ABSTRACT:
A stabilized laterally spread reticular web of split fibers is produced by feeding a web of split fibers onto a plurality of belts in side-by-side arrangement on the inlet side thereof, the belts circulating between an inlet-side roller and an outlet-side roller, the advancing route of the belts being planely diverging and the returning route of the belts being planely converging, making the surfaces of at least the belts among the plurality of belts, on which both the side edge parts of the web are placed, wet with a liquid, preferably water containing a small amount of a surfactant, laterally spreading the web on the advancing route of the belts to a given lateral spreading ratio, while temporarily fixing both the side edge parts of the web onto the belts by the surface tension of the liquid, withdrawing the web onto a rotating hot drum through a guide rod, applying suctions to both the side edge parts of the web on the drum, in order to laterally spread slacking side edge parts of the web outwards by the suctions, and drying and heat-treating the laterally spread web while travelling the laterally spread web from one drum to another in a series of several drums, thereby eliminating strains due to the lateral spreading. The resulting web is suitable for producing non-woven fabrics by lamination.

REFERENCES:
patent: 3303547 (1967-02-01), Kalwaites
patent: 3708831 (1973-01-01), Burger
patent: 3808639 (1974-05-01), Tautvaisas

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