HYDROPHILIC PRESSURE SENSITIVE HOT-MELT ADHESIVES

摘要

A device for delivering substances contained in hot-melt-type pressure-sensitive adhesives with a uniform or irregular distribution of the substances is characterised in that the hot-melt-type pressure-sensitive adhesive is hydrophilic and contains at least one water-soluble or at least water-swellable polymer, at least one water-soluble, hot-melt-type adhesive resin and the substance to be delivered.