| 摘要 |
The present invention provides a multilayered pellet having a core-shell structure, wherein the core of the core-shell structure is made of an ethylene-vinyl alcohol copolymer resin composition (A), and the shell of the core-shell structure is made of an ethylene-vinyl alcohol copolymer resin composition (B). The ethylene-vinyl alcohol copolymer resin composition (A) constituting the multilayered pellet contains any one of (i) to (iii): (i) an ethylene-vinyl alcohol copolymer (a) and a modified ethylene-vinyl alcohol copolymer (b); (ii) a modified ethylene-vinyl alcohol copolymer (b); and (iii) an ethylene-vinyl alcohol copolymer (a) and a plasticizer (d). The modified ethylene-vinyl alcohol copolymer (b) is preferably a modified ethylene-vinyl alcohol copolymer having a predetermined unit or a modified ethylene-vinyl alcohol copolymer obtained by reacting the ethylene-vinyl alcohol copolymer (a) and a monovalent epoxy compound (c) having a molecular weight of not greater than 500. Difference of the heat sealing temperature (TA) of the ethylene-vinyl alcohol copolymer resin composition (A) and the heat sealing temperature (TB) of the ethylene-vinyl alcohol copolymer composition (B) is in the range of 3
C to 100
C. |
