| 摘要 |
The invention relates to a felt material comprising at least one felt layer and an absorbing layer, to a method for producing the felt material, and to the use of the felt material in textiles, shoes, technical application or medical applications. The felt material according to the invention has the advantages of conventional felt materials regarding the warming and damping properties and is permeable to air in the dry state. Due to the special design, however, it is waterproof in the wet state and thus it is suitable for sealing many materials. The felt material according to the invention binds more humidity or binds water in a different way than common felt materials. |
| 主权项 |
1. Felt material having a blocking function for climatic regulation, comprising at least one felt layer and at least one fluid absorbing layer deployed at least in partial areas, characterized in that
at least one fluid absorbing layer is an absorber-containing layer, at least one felt layer and the absorber-containing layer are mutually needled to each other, an absorber in the absorber-containing layer is limited in its three-dimensional expansion by the felt layer(s) and/or by locking elements, the absorber is a superabsorber polymer, or a swellable polymer selected from the group consisting of polyacrylic acid, polyacrylic acid copolymers, crosslinked sodium polyacrylate, casein, egg white and thermostatic elastomer composites, or a superabsorber polymer fiber, the felt material is at least partial permeable to air in dry, open state, and the felt material is closed when it comes into contact with a fluid, water or water vapor with the extension of the absorber, wherein the fluid transport through the felt material is limited or stopped by a swollen absorber. |
