MULTILAYER CONTAINER

摘要

A multilayer container having a layer configuration of 4 or more layers including, as layered in that order from an inner layer to an outer layer, an oxygen-permeable layer containing an oxygen-permeable resin as the main component thereof, an oxygen-absorbing layer formed of an oxygen-absorbing resin composition containing a deoxidant composition and a thermoplastic resin, an adhesive layer containing an adhesive resin as the main component thereof, and a gas-barrier layer containing a gas-barrier resin as the main component thereof, wherein the gas-barrier resin is a polyamide resin containing a diamine unit containing a metaxylylenediamine unit in an amount of 70 mol % or more and a dicarboxylic acid unit containing 85 to 96 mol % of an α,ω-linear aliphatic dicarboxylic acid unit having 4 to 20 carbon atoms and 15 to 4 mol % of an aromatic dicarboxylic acid unit, the thickness of the oxygen-permeable layer is 15 to 40% of the total thickness of the multilayer container, and the thickness of the oxygen-absorbing layer is 10 to 40% of the total thickness of the multilayer container.

主权项

1. A multilayer container having a layer configuration of 4 or more layers comprising, as layered in that order from an inner layer to an outer layer, an oxygen-permeable layer (A) containing an oxygen-permeable resin as the main component thereof, an oxygen-absorbing layer (B) formed of an oxygen-absorbing resin composition containing a deoxidant composition and a thermoplastic resin, an adhesive layer (C) containing an adhesive resin as the main component thereof, and a gas-barrier layer (D) containing a gas-barrier resin as the main component thereof, wherein:
the gas-barrier resin is a polyamide resin (X) including a diamine unit containing a metaxylylenediamine unit in an amount of 70 mol % or more and a dicarboxylic acid unit containing 85 to 96 mol % of an α,ω-linear aliphatic dicarboxylic acid unit having 4 to 20 carbon atoms and 15 to 4 mol % of an aromatic dicarboxylic acid unit, the thickness of the oxygen-permeable layer (A) is 15 to 40% of the total thickness of the multilayer container, and the thickness of the oxygen-absorbing layer (B) is 10 to 40% of the total thickness of the multilayer container.