Composite with a textile character

A method for the production of composites with a textile character with a water vapor permeability greater than 1,000 g/m2/24 h and a waterproofness of more than 500 mm of water column by

• 1) applying a film coating with a layer thickness of 3 to 200 μm of composition B) by the chill roll coating method at mass temperatures of 190° to 290° C., optionally with the application of an intermediate layer C) of bonding agent on textile fabrics A), or
• 2) applying an extrusion coating with a layer thickness of 3 to 200 μm of composition B) by the extrusion coating method at mass temperatures of 200° to 290° C., optionally with the application of an intermediate layer C) of bonding agents on textile fabrics A), or
• 3) thermally bonding a polypropylene film having a thickness of 10 to 200 μm of composition B) with a textile fabric A), optionally with application of an intermediate layer C) of bonding agents on textile fabric A),
• A) the textile fabrics being woven, and knitted or nonwoven fabrics based on polyethylene, polypropylene, polyethylene terephthalate, polyamide, cotton or cellulose,
• B) the film coatings and/or extrusion coatings being of polypropylenes with addition of 0.01 to 2.5% by weight of stabilizers, 0.01 to 1% by weight of processing aids, in each case based on the sum of the polypropylenes, and optionally 0.1 to 1% by weight of antistats, 0.2 to 3% by weight of pigments, 2 to 20% by weight of flame retardants and/or 0.05 to 1% by weight of nucleating agents, in each case based on the sum of the polypropylenes, as auxiliary materials, and/or 10 to 70% by weight, based on the sum of the polypropylenes, of inorganic and/or organic fillers and/or reinforcing materials, and
• C) the intermediate layer of bonding agent between textile fabric and film coating and/or extrusion coating having a layer thickness of 0.5 to 20 μm and consisting of:
• polar olefin copolymers and/or olefin grafted copolymers, such as EVA copolymers, ethylene acrylic acid copolymers, ethylene methyl acrylate copolymers or polyethylene or polypropylene grafted with unsaturated carboxylic acids or carboxylic acid anhydrides,
• wherein, the polypropylenes of the film coatings and/or extrusion coatings B) either are polypropylene mixtures, which consist, on the one hand, of
• B1) 1 to 50% by weight of modified propylene polymers with melt indexes of 0.1 to 50 g/10 min at 230° C./2.16 kg and a ratio of the intrinsic viscosity of the modified polypropylene to the intrinsic viscosity of the unmodified polypropylene with largely the same weight average molecular weight of 0.20 to 0.95 and, on the other, of
• B2) 50 to 99% by weight of
• b2.1) propylene polymers, preferably propylene homopolymers, prepared using Ziegler-Natta catalysts or metallocene catalysts, and/or copolymers of propylene, ethylene and/or α-olefins with 4 to 18 carbon atoms with a propylene content of 80.0 to 99.9% by weight in the form of random copolymers, block copolymers and/or random block copolymers with melt indexes of 0.1 to 300 g/10 min at 230° C./2.16 kg, and/or
• b2.2) a polyolefin mixture with an Mw/Mn ratio of 2 to 6 and a melt index of 1 to 40 g/10 min at 230° C./2.16 kg, which consists of
• b2.2.1) 60 to 98% by weight of a crystalline copolymer of 85 to 99.5% by weight of propylene and 15 to 0.5% by weight of ethylene and/or an α-olefin of the general formula CH2═CHR, R being a linear or branched alkyl group with 2 to 8 carbon atoms, and
• b2.2.2) 2 to 40% by weight of an elastic copolymer of 20 to 70% by weight of ethylene and 80 to 30% by weight of polypropylene and/or an α-olefin of the general formula CH2═CHR, R being a linear or branched alkyl group with 2 to 8 carbon atoms, and/or
• b2.3) largely amorphous polypropylenes or propylene copolymers with a proportion of crystalline polypropylenes or crystalline propylene copolymer of less than 10% by weight, an enthalpy of melting of less than 40 J/g and a melt index of 0.1 to 100 g/10 min at 230° C./2.16 kg, the largely amorphous polypropylene being a homopolymer of propylene and/or a copolymer of propylene of at least 80 mole percent of propylene and at most 20 mole percent of one or more α-olefins of the general formula CH2═CHR, wherein R is a linear or branched alkyl group with 2 to 8 carbon atoms, and/or
• b2.4) non-isotactic propylene homopolymer with a melting point of 145° to 165° C., a melt viscosity in excess of 200,000 cps at 190° C., a heat of crystallization of 4 to 10 cal/g and a 35% by weight to 55% by weight portion, soluble in diethyl ether,
• or polypropylene mixtures, which consist only of B2), the components b2.2), b2.3) and b2.4) individually being contained in amounts of 5 to 100% by weight and the remaining components, individually or as a whole in the mixture, being contained in an amount up to 95% by weight,
• and that the composites with a textile character can be subjected to a monoaxial or biaxial afterstretching.