| abstract |
Provided is a multilayer structure that has a multilayer structure including an inner layer, an outer layer, and a barrier layer at least in part, and can prevent delamination at a higher level. A multilayer structure having at least a part of a multilayer structure including an inner layer, an outer layer, and at least one barrier layer positioned between the inner layer and the outer layer, wherein the inner layer and the outer layer are each independently 94 to 99.9% by mass of a polyester (A) containing a dicarboxylic acid unit containing 80 mol% or more of a terephthalic acid unit and a diol unit containing 80 mol% or more of an ethylene glycol unit, and 70 mol of a metaxylylenediamine unit % Comprising a resin composition (C) containing 0.1 to 6% by mass of a polyamide (B) containing a diamine unit and a dicarboxylic acid unit, and the barrier layer is 1 to 40% by mass of polyester (A), and The multilayer structure which consists of a resin composition (D) containing 60-99 mass% of polyamides (B). [Selection] Figure 1 |