Abstract: Plastics line consisting of three layers, an inner layer (3) bordering the interior (2), a middle layer (4) directly adjoining the inner layer (3), and an outer layer (5) directly adjoining the middle layer (4), where the inner layer (3) is formed on the basis of a mixture of at least two polyamides selected from the following group: PA12, PA612, PA616, or consists substantially thereof, the middle layer (4) is formed on the basis of PA612 and/or PA616 or consists substantially thereof, the outer layer (5) is formed on the basis of a mixture of at least two polyamides selected from the following group: PA12, PA612, PA616, or consists substantially thereof.

Abstract: Plastics line consisting of three layers, an inner layer (3) bordering the interior (2), a middle layer (4) directly adjoining the inner layer (3), and an outer layer (5) directly adjoining the middle layer (4), where the inner layer (3) is formed on the basis of a mixture of at least two polyamides selected from the following group: PA12, PA612, PA616, or consists substantially thereof, the middle layer (4) is formed on the basis of PA612 and/or PA616 or consists substantially thereof, the outer layer (5) is formed on the basis of a mixture of at least two polyamides selected from the following group: PA12, PA612, PA616, or consists substantially thereof.

Abstract: A multilayer backsheet (1) for a photovoltaic module according to the invention comprises a first outside layer (2), a second outside layer (3) and at least one inside layer (4, 5) which is arranged between these outside layers (2, 3). This at least one inside layer (4, 5) forms a water-vapor barrier and/or oxygen barrier. All these layers (2, 3, 4, 5) are composed of polymers. The multilayer backsheet (1) for a photovoltaic module according to the invention is characterized in that at least one of the two outside layers (2, 3) comprises a polyamide, and that the at least one inside layer (4, 5) consists of polymers which are no fluoropolymers and do not comprise any polyethylene. Inside layers (4, 5) made of partly aromatic polyesters are used only in combination with at least one outside adhesion promoter layer (6) made of block copolyesteramide.

Abstract: Relates to mono-backsheets for photovoltaic modules. These mono-backsheets are produced or producible from a molding compound, this molding compound being based on at least one polyamide. The photovoltaic module mono-backsheet according to the invention is characterized in that the at least one polyamide is synthesized from linear and/or branched aliphatic and/or cycloaliphatic monomers, which have an average of at least 8 and at most 17 carbon atoms. The monomers are selected from the group which comprises diamines, dicarboxylic acids, lactams, and amino carboxylic acids, as well as mixtures thereof. The polyamides PA 610 and PA 612 are excluded from the present invention, and the polyamides based on lactams and amino carboxylic acids are cross-linked.

Abstract: A line system (1) for fluids having volatile components, which comprises at least one fluid line (2,3,4), each having a separate inlet (10) and outlet (11), the fluid lines (2,3,4) being enclosed by a first line wall (12) and extending jointly over a section (A) of the line system (1) close-fitting to one another, but being separated from one another at least by the first line wall (12) over the entire length of the fluid lines (2,3,4). The line system (1) is implemented as a plastic hollow profile at least over the section (A) and comprises a further fluid line (8), which is enclosed by a second line wall (13), and comprises one or more line chambers (8?,8??), which are at least partially separated from one another by support webs (7), whose totality at least essentially encloses the fluid lines (2,3,4). In addition, the first and second line walls (12,13) and the support webs (7) of the plastic hollow profile being implemented from the same polymer material.

Abstract: A line system (1) for fluids having volatile components, which comprises at least one fluid line (2,3,4), each having a separate inlet (10) and outlet (11), the fluid lines (2,3,4) being enclosed by a first line wall (12) and extending jointly over a section (A) of the line system (1) close-fitting to one another, but being separated from one another at least by the first line wall (12) over the entire length of the fluid lines (2,3,4). The line system (1) is implemented as a plastic hollow profile at least over the section (A) and comprises a further fluid line (8), which is enclosed by a second line wall (13), and comprises one or more line chambers (8?,8??), which are at least partially separated from one another by support webs (7), whose totality at least essentially encloses the fluid lines (2,3,4). In addition, the first and second line walls (12,13) and the support webs (7) of the plastic hollow profile being implemented from the same polymer material.

Abstract: A thermoplastic multilayer composite comprising at least one first layer comprising a fluoropolymer, and also of at least one other second layer, at least some regions of which have direct contact with the first layer. This multilayer composite achieves surprisingly excellent adhesion between the two layers, because the second layer is comprising polyamide-polyamine copolymers. This second layer may particularly advantageously be used as an adhesion-promoter layer in relation to a further, third layer, which, by way of example, is comprising polyamide. In the form of a hollow body or hollow profile, this structure comprising at least 3 layers can preferably be used as fuel piping in the motor vehicle sector.

Abstract: The present invention refers to a thermoplastic multilayer composite (4) in the form of a hollow body which is formed by at least one inner layer (1) on the basis of polyamides, at least one inter-mediate layer (2) as well as at least one thermoplastic outer layer (3). Furthermore, the present invention relates to a process for making such a thermoplastic multilayer composite as well as to the use of such a thermoplastic multilayer composite as a tubing in particular for fuels. In particular in the context of the use as a tubing for fuels the proposed multiplayer structure shows to be surprisingly resistant against petrol comprising peroxide while at the same time having a simple structure, if the inner layer (1) is based on a mixture of different polyamide homopolymers.