| abstract |
Articles made from at least two layers are disclosed, wherein the first layer is a biodegradable water-soluble support material containing an active agent and coupled to at least one second layer, The layer is made from a biodegradable but water-insoluble material in the form of fibers. Active agents can be pharmaceutically active agents, cosmetics, cleaning agents, pesticides and biocides. The article serves for the controlled release of at least one active agent based on the effect of water. The fiber structure of the second layer allows control of the rate of water inflow and / or outflow. |