A process is provided for making dry, micronized particles of an agent, such as a drug. A fixed, coarse scraper bar is sandwiched between a pair of moveable fine scraper bars. The texturing or shaping of the strips is retained upon inflation of the balloon to inflation pressures, producing a structure which will ensure reliable positioning of the balloon in a vessel and reliable retention of a medical device on the balloon. 01 to 5 wt % is of humectant, and water provides the balance; these ingredients are stirred and mixed at room temperature, and after the film-forming resin is completely dissolved, impurities andor insoluble substances in the present invention are removed by means of multi-level filtering, and the obtained filtrate is the present ink. Examples of medical articles that can be produced in accordance with the present invention are gloves, finger cots, supply and drainage tubes, catheters, condoms, and contraceptive diaphragms.