Firma Carl Freudenberg

Carl Freudenberg Kg

Michael Hess

Engelbert Löcher

Robert Groten

Georges Riboulet

Ulrich Jahn

Ameur Abdelkader

Volker Roehring

Huan Hsiang Lin

Shih Wen Tseng

Wie Ren Huang

Hsien Fang Chiou

Elisabeth Kamin-Schulz

Eric Knehr

A method with which a textile sheet having good mechanical properties in respect to relatively high values regarding tear propagation resistance can be produced. The textile sheets are used in areas that require relatively high tear propagation resistance. The textile sheets also have relatively high peak tensile values and/or elongation at break values. The method for the production of a tear propagation-resistant textile sheet comprises providing a starting textile sheet made of yarns, fibers or filaments formed of at least two elementary filaments and having an arrangement in cross-section like orange segments or pie slices with the segments or slices made of different polymers, and exposing the starting textile sheet to a compressing heat treatment, wherein the polymer segments are permeated and a substantially non-adhesive bond is achieved between the polymer segments. The textile sheet may comprise nonwoven materials having a specific tear propagation resistance of equal to or greater than 0.4 N per g/m(according to Zungen method, ASTM D 2261).

Tear propagation-resistant textile sheet material, method making and use thereof

A method for producing a spunbonded nonwoven fabric by extruding a linear sheet of filaments arranged parallelly side by side in the form of a curtain from a plurality of spinning capillaries, involving aerodynamical pulling off and drawing of the filament sheet, the filament sheet () which emerges from the drawing duct () or which is pulled off a spool being moved laterally crosswise by an air flow having periodically changing directions, the air flow being oriented alternately at an angle toward the filament sheet () as viewed in the horizontal plane.

Method and device for producing a spunbonded nonwoven fabric

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Trippstadt, Germany

Michael Hess