TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The ethylene-type zinc ionomer in layer (A) contains 3 parts mass or less of dialkoxysilane having amino group with respect to 100 parts mass of ionomer. The ethylene-type zinc ionomer has structural unit derived from ethylene and structural unit derived from unsaturated carboxylic acid. The ethylene-type zinc ionomer has neutralization degree of 5-60%. The content of structural unit derived from ethylene is 95-75 %mass, and the content of structural unit derived from unsaturated carboxylic acid is 5-25 %mass. The unsaturated carboxylic acid is acrylic acid or methacrylic acid. The silane coupling agent is N-(2-amino ethyl)-3-aminopropyl methyldimethoxysilane, N-(2-amino ethyl)-3-aminopropyl methyldiethoxysilane, N-(2-amino ethyl)-3-aminopropyl ethyldimethoxysilane, 3-aminopropyl methyl-dimethoxysilane or 3-aminopropyl methyldiethoxysilane. The layer (A) contains 0.03-3 parts mass of silane coupling agent with respect to 100 parts mass of ethylene-type zinc ionomer.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The multilayer sheet has three layer structure including layer (B) which contains polyethylene-type copolymer as main component and is positioned between the two layers of layer (A) containing ethylene-type zinc ionomer as main component. The layer (B) optionally does not contain silane coupling agent. The ratio of thickness of layer (A) and layer (B) is 20:1-1:20. The melt flow rate of polyethylene-type copolymer in layer (B) and ethylene-type zinc ionomer in layer (A) is 0.1-150 g/10 minutes at 190 degrees C under load of 2160 g based on JIS K7210-1999. The layer (A) and/or layer (B) further includes additive chosen from ultraviolet absorber, optical stabilizer and antioxidant. The polyethylene-type copolymer is ethylene-and-unsaturated carboxylic acid copolymer, or its ionomer. The ionomer of ethylene-and-unsaturated carboxylic acid copolymer is zinc ionomer of ethylene acrylic acid copolymer or ethylene methacrylic acid copolymer.