Direct blow-molded container manufacturing method and package

A method of manufacturing a direct blow-molded container, the container comprising 60 to 90% by mass of a polyolefin (A), 5 to 30% by mass of an acid-modified polyolefin (B), and 2 to 35% by mass of a metaxylylene group-containing polyamide (C), the metaxylylene group-containing polyamide (C) being dispersed and layered in the polyolefin (A), the method comprising:

• using a die provided with
• a die body having a flow hole in which melted resin extruded from an extruder flows and a cylindrical hollow having an opening in a lower side and the flow hole in an upper side, the opening and the flow hole opening downward and upward, respectively,
• a mandrel having a tip in an upper side, the tip pointing to the opening of the tip of the flow hole, and
• a support part formed in a flow path clearance so that the flow path clearance formed between the hollow of the die body and the mandrel defining a resin flow path, the support part holding the mandrel in the hollow of the die body;
• setting the temperature of the die to fall within a range between a melt beginning temperature and a melt ending temperature of the metaxylylene group-containing polyamide (C), the melt beginning temperature and the melt ending temperature being measured with a differential scanning calorimeter;
• feeding melted resin formed by the extruder to the flow hole;
• forming the melted resin flowing through the flow hole in a cylindrical shape wrapping around the mandrel by the tip of the mandrel;
• passing the cylindrical melted resin through the support part in the flow path clearance to divide the cylindrical melted resin immediately before the support part;
• joining the divided resin immediately after the support part so as to form the joined melted resin in a cylindrical shape again;
• and
• extruding the cylindrical melted resin from the opening;
• to obtain a container comprising 60 to 90% by mass of a polyolefin (A), 5 to 30% by mass of an acid-modified polyolefin (B), and 2 to 35% by mass of a metaxylylene group-containing polyamide (C), the metaxylylene group-containing polyamide (C) being dispersed and layered in the polyolefin (A).