Firma Carl Freudenberg

Carl Freudenberg Kg

Other

Corovin Gmbh

Ruzek, Ivo

Ivo Ruzek

Ludwig Hartmann

Ararad Emirze

Michael Kauschke

Engelbert Löcher

Bernhard Klein

Norbert Weber

Hans-Achim Kunkel

Helmut Eschwey

Torsten Nahe

Thomas Kumpel

Walter Bruckner

Engelbert L/o/ Cher

Ludwig Hartman

Lothar Hackler

Engelbert Loecher

The invention relates to a high-strength light-weight non-woven fabric made of spunbonded non-woven, particularly for use as a reinforcement or strengthening material, comprising at least one ply of melt-spun synthetic filaments, which are bonded by means of high-energy water jets, characterized in that it includes a thermally activatable binding agent, which is applied onto the ply of melt-spun filaments in the form of at least one thin layer. The invention further relates to a method for producing such a non-woven fabric.

High-strength lightweight non-woven fabric made of spunbonded non-woven, method for the production thereof and use thereof

Process and spinning device for making microfilaments

Disclosed is an absorbent body of nonwoven material formed of randomly distributed thermoplastic endless filaments which contain embedded hydrophilic or oleophilic staple fibers and in some cases swelling particles. Also disclosed is a one-step process for the production of the absorbent body.

Absorbent body of nonwoven material and a method for the production

A spunbonded fabric is described that is made of polyester matrix filaments and a binding component consisting of thermoplastically softenable fibers, filaments or the like, and that is suitable for use as a tufting base. The melting point of the polyester matrix filaments is by at least 90.degree. C. above that of the binding component. In the tufted condition, before the coating of the back, the maximum tensile stretching value of the carpet material is more than 50%.

Tufting base for carpets made of a spunbonded fabric, a method of

High-strength elastic roofing and sealing material consisting of at least one bonded fabric layer of organic material, optionally at least one further bonded fabric or bonded-fabric material layer of inorganic material, and a coating of bitumen on both sides, where the bonded fabric layer(s) is (are) impregnated with the bitumen, and where the bonded fabric of organic material has a certain area weight and a certain residual deformation after previous elongation. The bitumen coating optionally can be made elastic by the addition of modifiers with sufficiently low glass conversion points.

Elastic roofing and sealing materials

The present invention provides a method for manufacturing polypropylene spun-bonded fabrics, which method involves preparing a polypropylene melt at a temperature of about 240.degree. to 280.degree. C. and forming polypropylene filaments by extruding this melt through a spinning nozzle at an extrusion velocity of about 0.02 meter/second to 0.2 meter/second. The spinning nozzle, or spinneret, has holes with a diameter less than 0.8 millimeter. The filaments thus formed are subsequently quenched by transversely blowing air at a temperature between about 20.degree. to 40.degree. C. The filaments are also aerodynamically withdrawn by means sufficient to create a filament withdrawal velocity between about 20 meters/second and 60 meters/second. The ratio of the extrusion velocity to the withdrawal velocity (herein defined as the deformation ratio) is between about 1:200 and 1:1000. These aerodynamically withdrawn filaments are then deposited onto a moving porous support in order to form a continuous web. This web is then bonded by suitable means, forming a finished spun-bonded nonwoven fabric.

Method for manufacturing polypropylene spun-bonded fabrics with low

The present invention provides for a soft, polypropylene spun-bonded fabric comprising continuous, i.e. endlessly spun, partially drawn polypropylene filaments which have a maximum tensile elongation of at least 200%.

Spun-bonded fabric of partially drawn polypropylene with a low draping

A surface treated, non-woven fabric covering for absorbent cellulose materials, and a method for its manufacture, wherein polymer fibers are coated with an effective amount of a wetting agent which can be chemisorbed on cellulose; the addition of the wetting agent taking place before extrusion in the spinning process, or at any point of manufacture including after the non-woven fabric covering has been finished; the wetting agent being, in the preferred embodiment, a cationic surfactant.

Non-woven fabric with wick action

Tufted carpeting having a prime, fabric backing, pile yarn on the front face of and anchored in said prime backing by a latex, a secondary backing covering the rear face of said prime backing and bonded thereto by the latex layer between said backings, said secondary backing being a non-woven fabric made of several, superposed layers of polyester and/or copolyester endless filaments or threads which are deposited in the layers in a tangled arrangement of individual filaments or threads and groups of two or more filaments or threads which lay in part parallel with each other, said filaments or threads being at least partly interbonded and laid in a crossed, parallel texture in the layers by heat and pressure or by a binder applied at spaced intervals, and the spacing between filaments and the applications of binder providing the secondary backing with an air permeability, measured at 0.5 mbar excess air pressure, of at least 120, preferably at least 500, dm.sup.3 m.sup.2 .multidot.s and a weight per unit area in the range of 4 to 150 grams per square meter.

Tufted carpeting

A spun nonwoven fabric of polyester filaments for use as backing for a deep-drawable tufted carpet, wherein the polyester filaments hve uniformly distributed therethrough about 0.1 to 1% by weight of a diol-modified copolyester containing units of at least two different doils. For example, polyethylene terephthalate granulate is mixed with polyethylene butylene terephthalate copolymer and spun into a nonwoven web which is calendered and then tufted to form a carpet which can be deep-drawn with a three-dimensional shape. If desired, polyethylene terephthalte-adipate copolymer fibers can be co-spun into the web as binding fibers.

Spun nonwoven fabric of polyester filaments for use as backing material

In a carpet capable of being shaped three-dimensionally particularly for use in automobiles, comprising a tufted spun nonwoven fabric backing of polyester reinforced by a binding-fiber content and provided with at least a single-layer back coating of an at least partly thermoplastic material, and tufting through said base, the improvement which comprises constructing the spun nonwoven fabric so that at a temperature of 127.degree. C. it has about 40 to 50%, and at a temperature of 157.degree. C. about 25 to 35%, of its tensile strength at 22.degree. C. and an elongation of about 65 to 100%, but at least a value of about 15 N per cm of width. Advantageously, the carpet includes a back coating of one layer of acrylic resin on the spun nonwoven fabric and a further layer of sintered polyethylene powder on top of the acrylic resin layer.

Carpet with non-woven backing

In the manufacture of a shaped automobile carpet in which a spun nonwoven-fabric backing composed of two dissimilar types of polyester filaments is tufted, then provided on its back with a layer of a polymeric dispersion binder, and shaped in heated state, the improvement which comprises bonding to the underside of the carpet before shaping a spun nonwoven fabric having isotropic strength properties and a weight per unit area of about 20 to 60 g/m.sup.2. Advantageously, the spun nonwoven fabric is bonded to the underside by a layer of sintered polyethylene powder. Such carpet shows less spacing than heretofore between the tufts in critical zones of curvature.

Growing community of inventors

Kaiserslautern, Germany

Ivo Ruzek