Abstract: An automobile beltline portion sound insulating structure formed along a beltline of an automobile, a door panel having two panel boards facing each other, a door glass being freely openable and closable by being provided between the two panel boards in a liftable manner and a first viscoelastic member mounted on a lower portion of at least one main surface of the door glass, the first viscoelastic member constrained by a mounting region of the first viscoelastic member in the door glass and a part of a surface of the panel board facing to the one main surface, at a door glass closed time, to insulate sound between the door panel and the door glass.

Abstract: Disclosed is a laminated substrate for a window, in which substrates are laminated through an intermediate layer structure, the laminated substrate includes a peripheral edge region, and a central region, wherein the intermediate layer structure includes a first region, and a second region, wherein, when a value obtained by dividing shear modulus of the second region against static force by shear modulus of the first region against the static force is denoted by x, a ratio of an area of the second region with respect to an area of the whole laminated substrate for the window is greater than or equal to (?74.87x+204.47)%, for 1.40?x?2.72; and greater than or equal to (?0.0067x+0.87)%, for x>2.72; and wherein a ratio of an area of the second region in the central region is less than or equal to 83%.