STRETCH-FORMED CONTAINER AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a stretch-formed container which comprises a polyester resin and effectively causes strain hardening even in a case that a limit is reached in mechanical stretching speed for achieving both of excellent heat resistance owing to high temperature stretching and stretching balance owing to strain hardening.

SOLUTION: In the stretch-formed container having a layer comprising a blend material of an ethylene terephthalate-based polyester resin and inorganic matter, the layer comprising the blend material has a dispersion structure composed of a continuous phase comprising the ethylene terephthalate-based polyester resin and a dispersion material comprising the inorganic matter and at least the dynamic viscoelastic measuring value of the body part of the container satisfies the following formula: (tanδmaximum value)+0.01×(tanδmaximum temperature)-1.37≤0.

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