Patent ID: 6164950
Filing Date: 2000-12-26
Classification: D01D,D04H

Abstract:
A device for producing spunbonded nonwovens from a mixture of thermoplastic matrix filaments having a first, higher melting point and thermoplastic binding filaments having a second, lower melting point that is 5.degree. C. to 50.degree. C. lower than the first melting point, comprising:a plurality of spinning nozzle packs, the nozzle packs each having a first group of melt channels and exit orifices for utilizing a thermoplastic polymer compound for forming matrix filaments and a second group of melt channels and exit orifices for utilizing a thermoplastic polymer compound for forming binding filaments; anda heating box surrounding each nozzle pack for heating the thermoplastic polymer compounds;wherein the melt channels of the first group are thermally insulated from the melt channels of the second group, and each melt channel group is assigned an individual temperature which is sufficient to keep the respective polymer compound for the matrix filaments or for the binding filaments molten.