Method of making controlled release devices

The invention claims a preparation non-flaw the method of control release. According to the invention's surface, relates to a following steps: methodThe combined into the chemical active and dry carrier of the connecting easy agent, comprising front forming device, and easy agent and polymerization material blank product combined. According to the invention; the other handle, relates to a following steps: methodHeating pipes and mixing polyurethane module and chemical active together by the first, a heating and mixing and by the second liquid the proply alcohol containing fluazinam and soft connected cross-linking agent together; and two types of a edible. The invention parts at the same time is cast the polyurethane composition.