| abstract |
The present invention relates to a pouring member integrally mounted on a container such as a pouch or an infusion bag, and prevents oxygen permeation through a wall of the pouring member when mounted on a container such as a pouch or an infusion bag. Provided is a multi-layer pouring member in which a rapid decrease in gas barrier properties during retort sterilization is prevented. A multi-layer pouring member (1), which is a pouring member integrally attached to a container and has an intermediate layer as an oxygen-absorbing gas barrier layer. The gas barrier resin of the oxygen-absorbing gas barrier layer has an oxygen permeability coefficient of 5.5 × 10 −12 cc · cm / cm 2 · sec · cmHg (23 ° C., 0% RH) or less; Preferably, the barrier layer 5 contains an oxidizing polymer and a transition metal catalyst. [Selection diagram] Fig. 1 |