Toyo Seikan Kaisha, Ltd.

Takurou Itoh

Yoshitsugu Maruhashi

Hiroto Watanabe

Takuya Kaneda

Naoki Fukazawa

A draw-molded and heat-set article obtained by draw-molding and heat-setting a hydroxyalkanoate resin comprising chiefly a polylactic acid, the draw-molded and heat-set article having a half-width (X) of a diffraction peak of 2&#x3b8;=10 to 25&#xb0; of not larger than 1.220&#xb0; and, particularly, not larger than 1.100&#xb0; as found by a broad-angle X-ray measurement. The molded article possesses excellent transparency and heat resistance despite it is made of a spontaneously integrating plastic material. The draw-molded article and, particularly, a container is effectively used for containing beverages.

Molded object obtained through stretching and thermal fixing and process for producing the same

A flavor-retaining multi-layer plastic container comprising an intermediate layer of a cyclic olefin copolymer and inner and outer layers of a non-cyclic olefin resin or an ethylene/vinyl alcohol copolymer jointed together via an adhesive, effectively eliminating the degradation in the adhesion when the container is filled with fragrant components and after the elapse of time. The flavor-retaining plastic multi-layer container comprises, inner and outer layers of a non-cyclic olefin resin, and an intermediate layer of a cyclic olefin copolymer adhered together via adhesive resin layers, wherein said adhesive resin is a linear very-low-density polyethylene having a density of from 0.800 to 0.910 g/cm.sup.3 obtained by the copolymerization of an ethylene with an .alpha.-olefin of an amount of from 6 to 20 mol % per the resin, or is an acid-modified product thereof.

Growing community of inventors

Yokohama, Japan

Takurou Itoh