| abstract |
The production method for a polyolefin-based structure of the present invention produces a polyolefin-based structure from a mixed source material containing a polyolefin (A), an acid-modified polyolefin (B) and a gas barrier resin (C) using a molding machine 10 , under the condition mentioned below. The molding machine 10 is equipped with a single-screw extruder 11 , a die head 12 , and an adaptor 13 for feeding the mixed source material from the single-screw extruder 11 to the die head 12 . Am+10° C.≦T 1 ≦Cm−10° C. (1), Cm−30° C.≦T 2 ≦Cm+30° C. (2), Cm−10° C.≦T 3 ≦Cm+50° C. (3), Cm−30° C.≦T 4 ≦Cm+30° C. (4). T 1 is a cylinder temperature in a section corresponding to a supply zone 21 A and a compression zone 21 B, T 2 is a cylinder temperature in a section corresponding to a metering zone 21 C, T 3 is a temperature of an adaptor 13 , T 4 is a temperature of a die head, Am is the melting point of the component (A), and Cm is the melting point of the component (C). |