| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To efficiently obtain a normal product in a short period of time by preventing the occurrence of streaks in the product, particularly, due to remaining of a polyamide resin (A) and eliminating a defective product caused by mixture of gels and aggregates regarding the mutual replacement between an EVOH and the polyamide resin (A). <P>SOLUTION: The purging method has the following configuration. When performing the resin replacement between the polyamide resin (A) and an ethylene-vinyl alcohol copolymer resin, the method is configured to use a polyamide resin composition (P) as a purging material. The polyamide resin composition (P) contains 0.01-5 mass% of an alkaline compound (X) with respect to 100 pts.mass of a polyamide resin (B) which contains a diamine unit (I-2), containing≥70 mol% of a meta-xylylenediamine unit, and a dicarboxylic acid unit (II-2) containing≥70 mol% of an 8-12Cα,ω-fatty dicarboxylic acid unit. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
