Abstract: A synthetic resin laminated container formed by extrusion blow molding into a bottle shape having a plurality of layers and including a mouth, a body and a bottom, wherein: the bottom has a grounding portion, a bottom wall portion provided inside the grounding portion and recessed inward the container with respect to the grounding portion, and a pinch-off portion having a protrusion thread shape protruding from a bottom surface that faces downward the bottom wall portion and both ends thereof in a longitudinal direction each is continuous to the grounding portion; the bottom surface is a flat surface; and an innermost layer is a polyester resin layer.

Abstract: A synthetic resin laminated container formed by extrusion blow molding into a bottle shape having a plurality of layers and including a mouth, a body and a bottom, wherein: the bottom has a grounding portion, a bottom wall portion provided inside the grounding portion and recessed inward the container with respect to the grounding portion, and a pinch-off portion having a protrusion thread shape protruding from a bottom surface that faces downward the bottom wall portion and both ends thereof in a longitudinal direction each is continuous to the grounding portion; the bottom surface is a flat surface; and an innermost layer is a polyester resin layer.

Abstract: A double-walled container includes a plurality of ribs. The plurality of ribs include at least one expanded diameter part rib whose upper end is disposed immediately below at least one diameter expansion part of ring and at least one intermittent part rib whose upper end is disposed immediately below at least one intermittent part of ring located immediately below at least one air introduction hole. The at least one intermittent part includes an extending portion extending beyond the upper end of the at least one expanded diameter part rib.

Abstract: A double-walled container including: an outer layer body; an inner layer body, which is provided in a pinched-off portion and which passes through the outer layer body. The pinched-off portion is formed in a bottom due to pinch-off using a splittable mold in blow molding. The bottom is provided, on an inner side in a radial direction of an outer edge portion thereof, which serves as a ground-contacting surface, with a substantially cross-shaped recess, which is concave toward a mouth. The recess is configured by a first-direction recess portion, which extends along an extending direction of the slit, and a second-direction recess portion, which intersects with the first-direction recess portion. The slit is provided in a region in which the first-direction recess portion and the second-direction recess portion intersect with each other.

Abstract: A double-walled container includes a plurality of ribs. The plurality of ribs include at least one expanded diameter part rib whose upper end is disposed immediately below at least one diameter expansion part of ring and at least one intermittent part rib whose upper end is disposed immediately below at least one intermittent part of ring located immediately below at least one air introduction hole. The at least one intermittent part includes an extending portion extending beyond the upper end of the at least one expanded diameter part rib.

Abstract: A double-walled container including: an outer layer body; an inner layer body, which is provided in a pinched-off portion and which passes through the outer layer body. The pinched-off portion is formed in a bottom due to pinch-off using a splittable mold in blow molding. The bottom is provided, on an inner side in a radial direction of an outer edge portion thereof, which serves as a ground-contacting surface, with a substantially cross-shaped recess, which is concave toward a mouth. The recess is configured by a first-direction recess portion, which extends along an extending direction of the slit, and a second-direction recess portion, which intersects with the first-direction recess portion. The slit is provided in a region in which the first-direction recess portion and the second-direction recess portion intersect with each other.

Abstract: A biodegradable molded article and a container using the molded article, exhibiting heat resistant properties. The molded article is obtained by injection molding a polylactic acid resin, wherein the polylactic acid resin of the molded article contains less than 4 mol % of D-lactic acid. The molded article has a crystallized portion having a ratio of the crystallizing heat quantity to the melting heat quantity (|?HC|/|Hm), which ratio is not more than 0.7 in a differential scanning calorimetry (DSC) curve.

Abstract: A biodegradable molded article and a container using the molded article, exhibiting an improved heat resistance. The molded article is obtained by injection molding a polylactic acid resin, wherein the molded article comprises poly-L-lactic acid containing less than 4 mol% of D-lactic acid. The molded article has a crystallized portion at least locally, having a ratio of the crystallizing heat quantity to the melting heat quantity (|?Hc|/?Hm), which ratio is not more than 0.7 in a temperature rising chart obtained by differential scanning calorimetry (DSC).

Abstract: The present invention provides a molded article of a resin containing poly-L-lactic acid, which is excellent in heat resistance and drop impact resistance. There is disclosed a molded article characterized in that said molded article is made from a resin composition obtained by compounding a functional filler into a resin made from a poly-L-lactic acid, the functional filler being yielded by a copolymerization of a compound having 2-4 hydroxyl groups with 1-100 molecules of D-lactic acid and a low-molecular-weight polymer selected from a group consisting of glycols, aliphatic polyesters and aromatic polyesters. The resin molded article according to the present invention exerts excellent drop impact resistance without sacrificing heat resistance.