COLD RESERVING AGENT PACK AND ITS PRODUCTION

摘要

PURPOSE:To eliminate the need for filling a high-viscosity cold reserving agent solution in a container. CONSTITUTION:A cold reserving agent pack has a water-insoluble film, composed of a gelatinous composition of an aqueous solution containing a water-soluble cellulose ether and sodium condensed naphthalenesulfonate and formed by treating the surface of the gelatinous composition with an aqueous solution of tannin. Furthermore, a method for producing this cold reserving agent pack is provided.