Process for the manufacture of network packages

Details Process for the manufacture of network packages Process for the manufacture of network packages

D - Textiles, Paper

01

D

18/542

D01D 5/42 (2006.01) D04H 13/00 (2006.01)

Patent

CA 1145516

3147 ABSTRACT The invention relates to a process for the manufacture of net- work packages from reticulate webs obtained by stretching, fibrillating ant spreading of a film of organic polymeric material. Network packages according the invention are obtained in that: a. one or more reticulate webs, one on top of the other, are continuously supplied and laid onto a carrier; b. the reticulate webs are folded zig-zag on this carrier; c. the folded network is continuously transported in a direction vir- tually normal to the direction in which the reticulate webs are supplied; d. further, at one or both sides of the resultant folded network, reti- culate webs are supplied, which webs are stretched longitudinally and in the direction of transport, fibrillated and spread, and are supplied in the direction of transport of the folded network and joined with it; e. the resultant combination of reticulate webs is carried off; the rate of supply of the reticulate webs to be folded and the rate of discharge of the folded reticulate webs being chosen so that the angle between two successive folded sides of reticulate webs is between 1 and 50 °C and in particular between 1° and 20°. By preference only at one of the two sides of the resultant folded net- work package, reticulate webs stretched in the transport direction are applied, and at the other side only one or two of such webs. The resultant folded network packages are integrated into a whole by welds at the sides and are passed between heated rollers.

367336

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