Firma Carl Freudenberg

Carl Freudenberg Kg

Freudenberg Politex Sa (Societe Anonyme)

Frudenberg Spunweb S.a. Societe Anonyme a. Directoire

Freudenberg Politex Sa

Georges Riboulet

Andreas Eisenhut

Robert Groten

Jean Baravian

Denis Reibel

Ulrich Jahn

Norbert Goffing

Olivier Chaubet

Detlef Barbier

Michael Hess

Massimo Migliavacca

Frédéric Rosé

Jean-Marc Losser

Ameur Abdelkader

Engelbert Loecher

Helmut Leiner

Peter Pfortner

Milton Williams

Wolfgang Neithardt

Peter Dengel

Delphine Guigner

A non-woven product containing organic and/or mineral particles has a volume density less than 1 and has at least two layers of synthetic fibers or filaments superposed in the Z direction perpendicular to the XY plane of the product, having undergone at least one needling operation, where the non-woven product integrates particulate feedstocks of mineral and/or organic particles distributed in a monomodal or multimodal manner in the product and at least partially coated or encapsulated by binding material that can point-connect the filaments or fibers to one another. At least one population or fraction of organic and/or mineral particles, has a size such that:3&#xd7;(&#x221a;{square root over ()}), preferably 5&#xd7;(&#x221a;{square root over ()})where SMf corresponds to the mean cross-section of the fibers or filaments that form the layers, and v represents the mean individual volume of the organic or mineral particles.

Non-woven product that contains organic and/or mineral particles and its process for production

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 multicomponent spunbonded nonwoven is provided which is composed of at least two polymers which form interfaces toward one another, which are produced by at least one spinning machine having uniform spinning nozzle apertures, and which are hydrodynamically drawn, lapped in a sheet-like manner, and bonded, the multicomponent spunbonded nonwoven being composed of different filaments which contain at least two polymers, or it being composed of a mixture of multicomponent filaments and monocomponent filaments which each contain only one of the polymers, the multicomponent filament being composed of at least two elementary filaments and the titer of the individual filaments varying by the number of elementary filaments contained in the filaments.

Multicomponent spunbonded nonwoven, method for its manufacture, and use of the multicomponent spunbonded nonwovens

A splittable yarns, fiber or filaments and a method and device for their production. The yarns, fiber or filaments includes at least two elementary filaments of a first polymer A and each second elementary filament is sheathed with a second polymer B.

Yarns, fibres and filaments that can be fibrillated, method and device for their production

Method and apparatus for producing multi-segmented filaments are provided. In one embodiment a first polymer material is passed into a die, the first polymer material and the die being maintained under predetermined rheological conditions. Next, the first polymer material is extruded through a plurality of die openings in the die, the die openings arranged in a group, the group configured to form at least two elementary filaments. Then, the two elementary filaments are connected to one another by adhesion contact to form a multi-segmented filament. In another embodiment a die for producing multi-segmented filaments is provided. This die comprises a polymer source maintaining a polymer under predetermined rheological conditions. A die in communication with the polymer source, the die maintaining the polymer under predetermined rheological conditions and a die plate in fluid communication with the die, the die plate defining a first group of openings, the first group comprising a first opening and a second opening, the first opening and the second opening configured to form a first elementary fiber having a skin and a second elementary fiber having a skin.

Process of making multi-segmented filaments

Rectangular or round spinning nozzle packs for extruding thermoplastic filaments each have both melt channels and orifices for the higher melting polymer compound and also melt channels with orifices through which is passed a polymer compound that melts at a temperature 5 to 50.degree. C. lower. Variously designed insulation channels thermally separate these melt channels, which are operated at different temperatures.

Device for producing spunbonded nonwovens

A nonwoven lap of very fine continuous filaments, crimped or not, obtained by means of a controlled direct spinning process, with a weight between 5 g/m.sup.2 and 600 g/m.sup.2, and formed, after napping, of composite filaments separable in the direction of their length, characterized in that said composite filaments have a filament number between 0.3 dTex and 10 dTex and are formed, each, of at least three elementary filaments of at least two different materials and comprising between them at least one plane of separation or cleavage, each elementary filament having a filament number between 0.005 dTex and 2 dTex, the ratio between the cross-sectional area of each elementary filament and the total cross-sectional area of the unitary filament being between 0.5% and 90%.

Nonwoven lap formed of very fine continuous filaments

Nonwovens of synthetic continuous filaments obtained by melt extrusion, in which at least 50% of the filaments contain at least from 0,5 to 3%, preferably from 0.6 to 1.5%, of a polyorganosiloxane introduced into the said filaments during their manufacture. Process for the manufacture of these nonwovens, in which, before extrusion of the polymer melt to produce the filaments by flowing through orifices of a die, a silicone oil of polyorganosiloxane type is introduced in the proportion at least of 0,5 to 3%, preferably from 0.6 to 1.5% relative to the polymer, into the melt of the latter. The polyorganosiloxane product employed is of the polydiorganosiloxane type with a molecular weight of between 1,000 and 250,000, preferably between 7,500 and 70,000, corresponding to dynamic viscosities of 50 to 10,000 mPa s; stable under extrusion conditions. Use of the nonwovens, chiefly as a support for floor coverings with stitched pile.

Nonwovens of synthetic continuous filaments including at least a part

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Colmar, France

Georges Riboulet