A laminate having a laminated structure of at least two layers includes a gas barrier film (A) formed from a mixture containing at least one poly(meth)acrylic acid polymer selected from the group consisting of poly(meth)acrylic acid and partially neutralized products thereof and a saccharide in a weight ratio of 95:5 to 20:80, and having an oxygen permeability constant of 5.00 x 10⁻³ ml(STP)·cm/m²·h·atmPa} or smaller as measured under conditions of 30°C and 80% relative humidity, and a layer (B) formed from a thermoplastic resin. The film (A) and the layer (B) are laminated contiguously to each other. A process for the production of a laminate having a laminated structure of at least two layers comprises a step of forming a gas barrier film (A) having an oxygen permeability constant of 5.00 x 10⁻³ ml(STP)·cm/m²·h·atmPa} or smaller as measured under conditions of 30°C and 80% RH, wherein a solution containing at least one poly(meth)acrylic acid polymer selected from the group consisting of poly(meth)acrylic acid and partially neutralized products thereof and a saccharide in a weight ratio of 95:5 to 20:80 is coated on a layer (B) formed from a thermoplastic resin, the solution coated is dried to form a film, and the film is then subjected to a heat treatment at a temperature of at least 100°C (373K). The film (A) and the layer (B) are contiguous to each other.
一种具有至少两层的层压结构的层压板,包括由混合物形成的气体阻隔膜 (A),该混合物含有至少一种聚(甲基)
丙烯酸聚合物,该聚合物选自由聚(甲基)
丙烯酸及其部分中和产物和糖组成的组,重量比为 95:5 至 20:80,
氧气渗透常数为 5.00×10-³ml(STP)-cm/m²-h-atmPa}或更小。薄膜(A)和层(B)相互毗连层压。生产具有至少两层层压结构的层压板的工艺包括以下步骤:形成一层气体阻隔膜(A),其
氧气渗透常数为 5.00 x 10-³ ml(STP)-cm/m²-h-atmPa}或更小,在30°C和80% RH条件下测得,其中含有至少一种聚(甲基)
丙烯酸聚合物的溶液选自由聚(甲基)
丙烯酸及其部分中和产物和糖组成的组,其重量比为95:在由热塑性
树脂形成的层 (B) 上涂覆所涂覆的溶液,干燥后形成薄膜,然后在至少 100°C (373K) 的温度下对薄膜进行热处理。薄膜(A)和层(B)彼此相邻。