Abstract: A water vapor permeable, waterproof textile laminate, comprising at least two layers made of planar web material, which are disposed on top of each other and bonded to each other, wherein an open fabric web comprising polymer fiber threads forms a top tier and a film-like, water vapor permeable, waterproof thermoplastic membrane web forms a bottom tier. The polymer fiber threads of the fabric web comprise raised thread regions, which are held bearing against the membrane web and/or are partially fused into the membrane web, wherein the membrane web comprises integral fusion areas with the raised thread regions, which are generated according to the invention by way of laser light in a laser transmission welding method.

Abstract: A water vapor permeable, waterproof textile laminate, comprising at least two layers made of planar web material, which are disposed on top of each other and bonded to each other, wherein an open fabric web comprising polymer fiber threads forms a top tier and a film-like, water vapor permeable, waterproof thermoplastic membrane web forms a bottom tier. The polymer fiber threads of the fabric web comprise raised thread regions, which are held bearing against the membrane web and/or are partially fused into the membrane web, wherein the membrane web comprises integral fusion areas with the raised thread regions, which are generated according to the invention by way of laser light in a laser transmission welding method.

Abstract: The invention relates to a method for determining the temperature-dependent state, in particular the melt state and/or the melt quantity of thermoplastic material when producing a weld seam (6), for example for joining thermoplastic parts (7, 7?) by means of a plastic welding device. For process control purposes, a temperature-dependent electric state variable of the thermoplastic material of the plastic parts (7, 7?) is measured continuously with and without applying heat to the plastic parts (7, 7?) along the weld seam (6) and compared to a target value or to benchmark values. In the method according to the invention, the electric state variable that is used is preferably the permittivity of the plastic parts (7, 7?). The permittivity is determined by means of the capacitor assembly (1) wherein the plastic material is used as the dielectric between the electrodes (3, 4) of the capacitor assembly (1).

Abstract: Electrical heating element 1, preferably for the ignition of biomass heating systems such as pellet stoves, with an elongated coil carrier 2 that is made of a thermally resistant, electrically insulating material and is designed to accept a heating wire coil, where the heating wire coil is held spiral-like on the outside the coil carrier 2 and is enclosed by a sleeve tube 4 also made of a thermally resistant material. The coil carrier 2 and the sleeve tube 4 delimit an air channel 5 through which the heating wire coil passes. According to the invention, the coil carrier 2 comprises at least two adjacent coil carrier shell parts 6, 6? that extend symmetrically to the center axis 8 of the heating element 1 in the longitudinal direction of the coil carrier 2.