The glass panel unit includes a first glass panel, a second glass panel, a seal, an evacuated space, and a spacer. The second glass panel is placed opposite the first glass panel. The seal with a frame shape hermetically bonds the first glass panel and the second glass panel to each other. The evacuated space is enclosed by the first glass panel, the second glass panel 30, and the seal. The spacer is placed between the first glass panel and the second glass panel. The spacer contains polyimide having benzoxazole structures.

A spacer for multipane insulating glazing units includes a polymeric main body having two pane contact surfaces running parallel to one another, a glazing interior surface and, an adhesive bonding surface. The pane contact surfaces, and the adhesive bonding surface are connected directly or via connection surfaces. The spacer also includes an insulation film, which is applied on the adhesive bonding surface.

A spacer for insulated glazing units having at least one polymeric main body with a wall thickness d having a first pane contact surface and a second pane contact surface running parallel thereto, one first glazing interior surface, one second glazing interior surface, one outer surface, one first hollow chamber, and one second hollow chamber. A groove for receiving a pane runs parallel to the first pane contact surface and the second pane contact surface between the first glazing interior surface and the second glazing interior surface. The first hollow chamber adjoins the first glazing interior surface and the second hollow chamber adjoins the second glazing interior surface. The lateral flanks of the groove are formed by the walls of the first hollow chamber and the second hollow chamber, and the wall thickness d′ in the region of the lateral flanks is less than the wall thickness d of the polymeric main body.

A spacer for insulating glass units, includes a U-shaped main body extending in the longitudinal direction including a first metallic side section, a second metallic side section arranged parallel thereto, a polymeric connecting piece extending in the transverse direction, which connects the two metallic side sections and forms the lower limit of the main body, and an intermediate space arranged above the polymeric connecting piece between the metallic side sections. The first and second metallic side sections each include a side wall for connecting to a glass pane and a retaining arm, which protrudes into the intermediate space, and the retaining arm forms an assembly groove with the side wall, which groove runs substantially parallel to the side wall. The polymeric connecting piece is U-shaped and its two legs are inserted into the assembly grooves of the two metallic side sections.

A glass panel includes a first glass substrate, a second glass substrate, a spacer profile at the periphery of the glass panel between the first and the second glass substrate. There is an intermediate substrate in the intermediate space between the first and the second glass substrates, the substrate having a first coefficient of thermal expansion, and means to maintain the intermediate substrate within the intermediate space. The panel also includes a second profile, having a second coefficient of thermal expansion, positioned facing the inner face of the spacer profile within the intermediate space between the first and second glass substrates of the glass panel. The second profile carries the means to maintain the intermediate substrate within the intermediate space. A difference between the first coefficient of thermal expansion and the second coefficient of thermal expansion is less than or equal to 20%.

A spacer profile for an insulating glazing unit for maintaining a space between glazing panes includes a profile body formed from a first heat insulating material that has, viewed in a cross section perpendicular to a longitudinal direction, outer side walls extending in a height direction and that has a distance in a transverse direction smaller than a first width, each side wall having an inner protrusion protruding towards the opposite side wall into a recess which is open to the inner side, and a diffusion barrier film made from a second material and firmly bonded with the profile body and, viewed in the cross section perpendicular to the longitudinal direction, extending over the profile body on the outer side of the spacer profile and continuous thereto in the height direction on the outside of the side walls and/or in the same to a second height and into the protrusions.

An insulating glazing includes a first pane, a second pane, an inner spacer frame arranged between the panes, which, together with the panes, delimits an inner interpane space, a surrounding outer spacer frame arranged between the panes, which is arranged on the outward facing side of the inner spacer frame, wherein the inner spacer frame consists substantially of a first hollow profile spacer and the outer spacer frame consists substantially of a second hollow profile spacer, the inner spacer frame and the outer spacer frame are in each case connected together to the first pane and the second pane via a primary sealant, an outer interpane space between the outer side of the outer spacer frame and the first pane and the second pane is filled with a secondary sealant.

A spacer is provided for an insulating glazing unit that includes at least two spaced-apart glazing panes connected along their edges via the spacer in a mounted state in which the spacer is mounted at the edges to limit an interspace, which is defined between the glazing planes and is filled with gas. The spacer has an inner wall (14) connecting side walls (11, 12) on an inner side that faces the interspace. The inner wall (14) includes a recess portion (14rs, 14rt, 14rc) that enables the length of the inner wall to change in the width direction in response to an external pressure force or an external tensional force applied to the side walls (11, 12).

A spacer for multipane insulated glazings, includes a polymeric main body, including two pane contact surfaces running parallel to one another, a glazing interior surface, and a base surface, wherein the pane contact surfaces and the base surface are connected to one another directly or via connecting surfaces and an insulating film, which has at least one metallic or ceramic layer and is applied on the polymeric main body, wherein the insulating film covers the base surface and the two pane contact surfaces completely and the glazing interior surface at least partially.

An insulated glass unit is described and includes at least a first glass layer, a second glass layer and a third glass layer disposed therebetween. The third glass layer is separated from the first glass layer and the second glass layer by first and second sealed gap spaces. The third glass layer has a low CTE as compared to the CTE of the first and/or second glass layers. In some instances, the third glass layer has a CTE of less than 70×10.sup.−7/° C. over a temperature range of 0-300° C.