ROOL-SHAPED MATRIX BODY ENHANCED IN ROLL RELEASE CAPACITY AND METHOD FOR ENHANCING SAID CAPACITY

摘要

PURPOSE: To provide a roll-shaped matrix substance of making possible to enhance the releasing ability of rolling in an aqueous environment of a matrix substance by composing of that an activator containing polymeric matrix is processed by an annealing process before the polymeric matrix is bundled to roll-shaped form. CONSTITUTION: After the activator-containing polymeric matrix is treated by the annealing process, it is bundled to a roll-shaped form. The polymeric matrix consists of for example an ethylene-vinyl acetate copolymer, and an activator which is contained in the polymeric matrix consists of for example morantel or its water-soluble acid-addition salt. An annealing temperature may be at approximately 40-80 deg.C, preferably at approximately 43-60 deg.C.