| abstract |
Disclosed is a pressure-resistant polyester container excellent in transparency in which whitening over time is effectively prevented even when a functional resin composition in which clay is mixed with a functional resin is used as an intermediate layer, and a method for producing the same. It is to be. In a pressure-resistant polyester container having a multilayer structure composed of inner and outer layers made of a polyester resin and at least one intermediate layer made of a functional resin, In the container body, the crystallinity of the inner layer made of polyester resin is 23% or more, the crystallinity of the outer layer is 18% or more, and the average value of the crystallinity of the inner layer and the crystallinity of the outer layer is 24%. This is the pressure-resistant polyester container, wherein clay is dispersed in the functional resin. [Selection figure] None |