| 摘要 |
A primary blow mold (M1) for biaxially stretch blow molding a primary container (C1) in a double-blow molding process, comprises a mold cavity (MC1), having a cylindrical upper molding portion (21) and a bottom molding portion (20). Said bottom molding portion (20) comprises a sidewall (200), that is an extension of the cylindrical upper molding portion (21), that forms a molding surface centered on a central axis (A'), and that is not cylindrical, a concave transition wall (201) where the transverse cross section of the mold cavity (MC1) is the largest, and a bottom wall (202) transverse to the central axis (A'). The transverse cross section of the non cylindrical sidewall (200) is the largest at the transition with the concave transition wall (201). |
