Thermoplastic resin composition, molded object, and production methods therefor

A molded body which is a bottomed hollow body formed integrally by injection molding and blow molding, comprising:

• a wall portion made of a thermoplastic resin composition;
• a hollow portion surrounded by the wall portion;
• an opening that is formed at the top of the hollow portion that connects the hollow portion and the outside of the molded body, and the opening has smaller size than the diameter of the hollow portion;
• and
• a thicker part formed at the periphery of the opening which is made of the thermoplastic resin composition;
• wherein the molded body comprises a first part formed by blow molding and a second part formed by injection molding that is thicker and more rigid than the first part,
• wherein the first part includes the wall portion and the second part includes the thicker part,
• wherein the thermoplastic resin composition comprises a polyamide resin, a polyolefin resin having no reactive group that reacts with the polyamide resin, and a modified elastomer having a reactive group that reacts with the polyamide resin,
• wherein the thermoplastic resin composition shows non-Newton properties in which a viscosity of the thermoplastic resin composition at a high shear rate is lower than a viscosity of the thermoplastic resin composition at a low shear rate in a fluidized state,
• wherein a melt viscosity V1 of the thermoplastic resin composition is 1500 Pa·s or more, the melt viscosity V1 being a melt viscosity of the thermoplastic resin composition at a temperature of 200° C. and a shear rate of 12.16 sec−1,
• wherein the thermoplastic resin composition has a melt viscosity ratio V1/V3 of 6.5 or more, where V1 is the melt viscosity V1, and V3 is a melt viscosity of the thermoplastic resin composition at a temperature of 200° C. and a shear rate of 608.0 sec−1, and
• wherein the thermoplastic resin composition has a melt flow rate (MFR) at a temperature of 230° C. and a load of 2.16 kg that is in a range of from 2.3 g/10 min to 6 g/10 min.