NOVELTY - A laminate (40) is obtained by laminating a polymer electrolyte membrane containing polymer electrolyte and a polyolefin film (10) comprising polyethylene-type resin and/or polypropylene resin.    USE - Laminate is used for producing polymer electrolyte membrane (claimed) used as diaphragm for electrochemical device e.g. fuel cell used for motor vehicle.    ADVANTAGE - The polymer electrolyte membrane obtained from laminate has excellent storage stability and dimensional stability. The generation of abnormalities such as wrinkles in the external appearance of polymer electrolyte membrane is prevented, while peeling polyolefin film from laminate.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) manufacture of laminate, which involves dissolving polymer electrolyte in organic solvent to obtain polyelectrolyte solution (1), spread-coating polyelectrolyte solution continuously on the polyolefin film to obtain laminate (20) having polyolefin film and layer containing polymer electrolyte, drying laminate (20) in furnace (6) such that organic solvent in layer containing polymer electrolyte is removed to obtain laminate (30) having polyolefin film and intermediate polymer electrolyte membrane, and cleaning the solvent in contact with intermediate polymer electrolyte membrane;    (2) storage method of polymer electrolyte membrane, which involves storing the polymer electrolyte membrane in form of laminate;    (3) conveyance method of polymer electrolyte membrane, which involves conveying the polymer electrolyte membrane in form of laminate;    (4) polymer electrolyte membrane, which is obtained by peeling polyolefin film from the laminate; and    (5) polymer electrolyte fuel cell, which has polymer electrolyte membrane.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of principal portion illustrating manufacturing method of laminate. (Drawing includes non-English language text)    Polyelectrolyte solution (1)    Furnace (6)    Washing tank (7)    Polyolefin film (10)    Laminates (20,30,40)