| 摘要 |
PROBLEM TO BE SOLVED: To provide parison for a balloon that helps stably make a balloon when carrying out biaxial drawing blow molding in a balloon of a variety of sizes made from a polyamide elastomer. SOLUTION: Parison for a balloon is characterized by comprising a polyamide elastomer, and having a difference between a maximum value and a minimum value of double refraction being 0.22×10<-3> or less. |
