Patent ID: 6349838
Filing Date: 2002-02-26
Classification: B29B,B29C,B29K,B65D

Abstract:
A bottle formed by biaxially stretch-blow-molding a thermoplastic resin and having a mouth portion, a shoulder portion, a barrel portion and a bottom portion, said bottom portion without being substantially affected by the residual strain due to orientation by fluidization, wherein the bottle is composed of a polyester and the central portion in the bottom portion of the bottle has a diffuse scattering peak in 2 &thgr; of from 19.45 to 20.50Â° as measured by using X-rays (Cu-&agr;) falling in the direction of thickness of the container wall, a peak position (A) at a portion on the outer surface side of the central portion in the bottom portion is an angle lower than that of a peak position (B) at a portion on the inner surface side of the central portion in the bottom portion, the difference (Bâˆ’A) thereof is not smaller than 0.15 degrees, a half-value width (C) of the diffuse scattering peak of X-rays in the portion on the outer surface side at the central portion in the bottom portion is larger than a half-value width (D) of the diffuse scattering peak of X-rays in the portion on the inner surface side at the central portion in the bottom portion, and the difference (Câˆ’D) thereof is not smaller than 0.10 degrees.