| abstract |
The present invention relates to a multilayer preform having inner and outer layers made of an ethylene terephthalate polyester resin and at least one intermediate layer made of at least a low crystalline ethylene terephthalate polyester resin and a gas barrier aromatic polyamide resin. The crystalline ethylene terephthalate polyester resin contains cyclohexane dimethanol as a copolymerization component in the range of 15 to 20 mol% or isophthalic acid in the range of 7.5 to 15 mol%, and the low crystalline ethylene terephthalate polyester resin and the gas barrier The weight ratio of the aromatic aromatic polyamide resin is in the range of 50:50 to 75:25, the weight ratio of the intermediate layer to the entire preform is 1% by weight or more and less than 10% by weight, and a multilayer structure is formed. 5% haze By a top, it is possible to provide a stretch blow molded container having excellent transparency, gas barrier properties and mechanical strength. |