Method for manufacturing glass container

A method for manufacturing a glass container comprising steps (A) to (E);

• (A) A step of introducing a gob into a mold through a funnel after fitting the funnel to the mold,
• (B) A step of blowing air into the mold through the funnel, bringing a plunger disposed on a side opposite the side to which the funnel is fitted in contact with the gob, separating the plunger from the gob, and forming a recess on the surface of the gob, the recess formed on the surface of the gob having a maximum diameter of a value within the range of 4 to 24 mm and a depth of a value within the range of 3 to 10 mm,
• (C) A step of removing the funnel from the mold and fitting a baffle to the mold,
• (D) A step of blowing air from the plunger, and forming an inner space inside the gob with the recess as a starting point while simultaneously forming an outer shape by pressing the outer side of the gob to a molding surface of the mold to obtain a glass container of the final shape, wherein
• the inner space formed inside the gob includes a passage portion formed in communication with the outside and an accommodating portion formed continuously from the innermost end portion of the passage portion,
• the passage portion has a cylindrical shape and the accommodating portion has a spherical shape,
• the following relational expression (1) is satisfied in a case where the passage portion has a cylinder diameter C (mm) and the accommodating portion has a sphere diameter B (mm)
• 7≤B−C≤15 (1),
• (E) A step of transferring the glass container of the final shape to a cooling mold and cooling the same.