| abstract |
The invention relates to a method for welding porous membranes, comprising: i) providing a porous membrane and a sheet carrier material; ii) at least partially superimposing porous membrane and planar support material according to i) to obtain an at least partly overlapping region; iii) welding of porous membrane and carrier material at least in a part of the overlapping region according to ii) at a temperature in the range of 100 to 300 ° C to obtain an at least partially welded composite of porous membrane and sheet carrier material, wherein the sheet carrier material is a second porous membrane wherein the material of the second porous membrane comprises a thermoplastic elastomer selected from the group consisting of polyurethane, polyester, polyetherester, polyesterester, polyamide, polyetheramide, polystyrene, ethylene-vinylacetate elastomer and mixtures of two or more these elastomers. Furthermore, the invention relates to a welded composite of a porous membrane and a carrier material, obtained or obtainable by the inventive method and the use of a welded composite for producing an article selected from the group consisting of clothing, shoe, boots, protective suit, tent and tarpaulin. |