参考文献:
GRUeNENTHAL GMBH FRANK, Robert BAHRENBERG, Gregor CHRISTOPH, Thomas SCHIENE, Klaus DE VRY, Jean DAMANN, Nils FRORMANN, Sven LESCH, Bernhard LEE, Jeewoo KIM, Yong-Soo KIM, Myeong-Seop Patent: WO1/17855 A1, 1 Location in patent: Page/Page column 16 17