Patent ID: 7891963

Claim:
A manufacturing apparatus of a resin container, comprising: a die head having a slit portion on an end side and a discharge portion provided in a vicinity of the slit portion; a main extruder which supplies a base material resin to the die head to extrude a parison through the slit portion; a sub-extruder having a flow path connected to the discharge portion to supply a sub-material, the sub-material supplied from the sub-extruder being discharged from the discharge portion provided in the die head so that the sub-material joins the base material resin continuously supplied from the main extruder, the parison being subjected to blow molding, thereby forming a coating layer which covers a whole or part of a container body formed of the base material resin by using the sub-material; and a suck-back mechanism which pulls back the sub-material from the discharge portion and is provided between the sub-extruder and the die head, the suck-back mechanism comprising a first suck-back device connected to a rear portion of the flow path, and a second suck-back device connected to the flow path between the rear portion and the discharge portion and adjacent to the discharge portion.