One-press method for producing glass vessel

A one-press method for producing a glass vessel, the method comprising:

• (A) a press step of molding, by one press, a parison which is provided with a body part, a mouth ring part and a shoulder part between the body part and the mouth ring part and has a finish form by pouring a gob into a forming die used to mold the parison having a finish form from the gob by using a forming die including a forming die base part and a mouth die which are each divided into two parts by a predetermined parting line and then by inserting a plunger into the forming die, wherein the shape of the finish form of the parison is substantially the same as the shape of a finish form of a glass vessel which is formed by cooling the parison to a predetermined temperature in a cooling mold;
• (B) a transfer step of transferring the parison having the finish form by turning it to the cooling mold provided with a support section which supports the mouth ring part of the parison having the finish form, a mounting section on which the bottom part of the parison having the finish form is mounted and a blow head which internally cools the parison having the finish form in the condition that the parison is grasped by the mouth die;
• and
• (C) a cooling step of forming the parison having flail the finish form into the glass vessel by blowing off a first cooling air along the inside peripheral surface of the parison having the finish form from the blow head and supplying a second cooling air that cools the outside peripheral surface of the parison having the finish form, along the outside peripheral surface of the parison having the finish form from a discharge port disposed in the mounting section, wherein
• the press step (A) is carried out using the forming die having a parting line positioned at the shoulder part between the mouth ring part and body part of the parison having the finish form and the parting line is located adjacent to the mouth ring part of the parison having the finish form;
• and
• a guide member is disposed inside of the mouth die through a spring member.