| 摘要 |
PURPOSE: A boot seal manufacturing method, a boot seal produced by the same, and a forming core for producing the boot seal are provided to maintain the air tightness of a constant joint comprising the boot seal by forming an air tightening member and a body into a single body. CONSTITUTION: A forming core(20) is formed by combining first and second core units(21, 22). A first core unit forms a perforated portion and a connecting bellows tube. The second core unit forms an opening and an airtight member. A first jetting hole(23) is formed between the boundary spot of the first and the second core units for supplying air for blowing molding. The second jetting hole(24) is formed in the rear portion of the second core unit for supplying jetting air. |
