| 摘要 |
PCT No. PCT/US94/05035 Sec. 371 Date Jan. 26, 1996 Sec. 102(e) Date Jan. 26, 1996 PCT Filed May 6, 1994 PCT Pub. No. WO94/26498 PCT Pub. Date Nov. 24, 1994This invention relates to a method of molding a double-wall bottle consisting of an outer bottle (12) and an inner bottle (14). A outer bottle (12) is first formed from a first preform by biaxial Stretch blow molding. After this molding step, a plurality of air vent holes (24) are formed in a biaxially orientated region of the outer bottle (12). Next, a second preform (70) and the outer bottle (12) are set together within a first blow cavity mold (100). Subsequently, the inner bottle (24) is formed by biaxial stretch blow molding from the second preform (70) while the air within the outer bottler (12) is expelled through the air vent holes (24). Circumferential concave ribs (22) are formed around the entire circumference of the outer bottle (12), and at least one of the air vent holes (24) is formed in a region either inside or outside the region in which the circumferential concave ribs are formed. |
