Stretch blow molded container and production process thereof

摘要

The invention provides a stretch blow molded container formed from a thermoplastic resin material which comprises polyglycolic acid having (a) a repeating unit represented by the following formula (1): <CHEM> (b) a melt viscosity, eta * Äas measured at a temperature of (the melting point, Tm of the polymer + 20 DEG C) and a shear rate of 100/secÜ of 500-100,000 Pa.s; (c) a melting point, Tm of at least 180 DEG C; (d) a melt enthalpy, DELTA Hm of at least 20 J/g; and (e) a density of at least 1.50 g/cm<3> as measured in an unoriented, crystallized form, wherein the stretch blow molded container has tensile strength (in a circumferential direction) of at least 100 MPa and a carbon dioxide permeability (as measured at a temperature of 23 DEG C and 80% relative humidity; in terms of the thickness of 50 mu m) of 300 cc/m<2>.day.atm or smaller at the body sidewall thereof, and a production process thereof.