Super absorber polymer felt and method for the production thereof
AssigneeIQTEX Patentverwaltung UG
InventorMichael Christian Dehn
Life of this patent
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Abstract
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.
Claims35
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.
Method for manufacturing a felt material comprising at least one felt layer and at least partially at least one absorber-containing layer, characterized in that
- at least one absorber-containing layer is placed on one felt layer or between a first and second felt layers, and
- the felt layer(s) and the absorber-containing layer are mutually needled with each other, or
- one layer provided with precursors of an absorber polymer is placed on the felt layer and between the first and second felt layers, and
- an absorber in the absorber-containing layer is a superpolymer absorber, or a polymer capable of swelling, 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 layers and precursor-containing layer and/or the second felt layer are mutually needled to each other and the polymerization to absorber polymer is ended during or after the felting procedure, wherein absorber in the absorber-containing layer is swollen when it comes into contact with a fluid, water or water vapor.
Structural component comprising a 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 superpolymer absorber, or a polymer capable of swelling, 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 the swollen absorber.
Method for ventilating, dehumidifying, humidifying, sealing and/or climatic regulation of textile or non-textile objects, comprising the step of applying a felt material having a blocking function for climatic regulation, which felt material comprises 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 superpolymer absorber, or a polymer capable of swelling, 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 the swollen absorber.
Dependencies are inferred from the claim text.