| 摘要 |
A multi-layer drawn polyester bottle 16 comprises a neck portion having an opening 7 on the top end and a screwed part 8 on the periphery, a bottom portion formed by closing of a pipe and a barrel portion biaxially molecularly oriented by draw-blowing of the pipe, the pipe being composed of inner and outer base layers 2,3 of a polyester consisting of ethylene terephthalate and an intermediate layer 4 of ethylene-vinyl alcohol having an ethylene content lower than 50 mole %. This bottle is prepared by coextruding a multi-layer pipe using ethylene-vinyl alcohol as an intermediate gas barrier layer and polyester resin as inner and outer base layers and, if necessary, interposing adhesive layers 5a,5b between the resin layers, closing one end of the pipe to form a bottom portion, pre-heating the so- obtained preform at a temperature of 85 to 120 DEG C and draw-blow- forming biaxially in the axial and circumferential directions in a blow- forming mold. <IMAGE> |
