Hydrophilic, hot-melt-type pressure-sensitive adhesive

摘要

A device for the release of substances from pressure sensitive hot-melt adhesives with a uniform or non-uniform distribution of said substances is characterized by the fact that the pressure sensitive hot-melt adhesive is hydrophilic and comprises at least one water-soluble, or at least water-swellable, polymer, at least one water-soluble, meltable adhesive resin, as well as substance to be released.