Certain example embodiments relate to seals for glass articles. Certain example embodiments relate to a composition used for sealing an insulted glass unit. In certain example embodiments the composition includes vanadium oxide, barium oxide, zinc oxide, and at least one additional additive. For instance, another additive that is a different metal oxide or different metal chloride may be provided. In certain example embodiments, a composition may be combined with a binder solution that substantially or completely burns out by the time the composition is melted. In certain example embodiments, a CTE filler is included with a frit material. In certain example embodiments, a vacuum insulated glass unit includes first and second glass substrates that are sealed together with a seal that includes the above-described composition.

The objective is to propose a production method of multiple panes which can be simple and nevertheless produce a multiple pane in its finished state which does not include any undesired protrusion from an external surface of a glass panel. The production method includes: hermetically bonding, with a sealing member, peripheries of paired glass panels disposed facing each other at a predetermined distance to form a space to be hermetically enclosed between the glass panels; evacuating air from the space through an outlet to make the space be in a reduced pressure state; and dividing, after the space is made be in the reduced pressure state, the space by a region forming member into an outlet region including the outlet and a reduced pressure region other than the outlet region.

A glass panel unit includes: a first panel; a second panel facing the first panel; a sealing member bonded to respective facing peripheral portions of the first panel and the second panel; and at least one spacer provided in a reduced pressure space between the first panel and the second panel. The at least one spacer includes a resin body and at least one ultraviolet protective layer provided on a surface of the resin body.

A glass panel unit manufacturing method includes a bonding step, a pressure reducing step, and a sealing step. The bonding step includes bonding together a first substrate and a second substrate with a first sealant to create an inner space. The pressure reducing step includes producing a reduced pressure in the inner space through an exhaust port that the first substrate has. The sealing step includes melting and expanding a second sealant, inserted into the exhaust port, by heating the second sealant and thereby sealing the exhaust port up with the second sealant expanded to the point of coming into contact with a dam arranged in the inner space.

A glass panel unit assembly includes: a pair of glass substrates arranged to face each other; a peripheral wall; a partition; an air passage; and an evacuation port. The peripheral wall has a frame shape and is disposed between the pair of glass substrates. The partition partitions an internal space, surrounded with the pair of glass substrates and the peripheral wall, into a first space and a second space. The air passage connects the first space and the second space together. The evacuation port connects the second space to an external environment. The partition is lower in height than the peripheral wall.

A glass panel unit includes: a first glass pane; a second glass pane disposed to face the first glass pane; a frame disposed between the first glass pane and the second glass pane and hermetically bonding a first peripheral portion of the first glass pane and a second peripheral portion of the second glass pane together, the first peripheral portion extending along an outer periphery of the first glass pane, the second peripheral portion extending along an outer periphery of the second glass pane; a vacuum space surrounded by the first glass pane, the second glass pane, and the frame; a gas adsorbent disposed in the vacuum space; and a thermal insulation layer disposed between the gas adsorbent and the second glass pane.

A glass panel unit manufacturing method includes a glue arrangement step, a pillar forming step, an assembly forming step, a bonding step, an evacuation step, and a sealing step. The glue arrangement step includes arranging a hot glue including a frame member and a partition on either a first panel having a predetermined degree of warpage or a second panel. The pillar forming step includes placing pillars on either the first or second panel. The assembly forming step includes forming an assembly. The bonding step includes heating the assembly with the first panel arranged to form an upper part of the assembly and the second panel arranged to form a lower part of the assembly to bond the first panel and the second panel together. The evacuation step includes reducing pressure in an internal space. The sealing step includes creating a hermetically sealed evacuated space by closing an exhaust port.

A glass panel unit including a first panel including at least a first glass plate; a second panel arranged to face the first panel and including at least a second glass plate; a frame member formed in a shape of a frame, corresponding in shape to respective peripheral portions of the first panel and the second panel extending along edges thereof, and bonded to the peripheral portions; and at least one spacer provided in a vacuum space between the first panel and the second panel. The at least one spacer containing a polyimide, where the polyimide has an absorption edge at which an absorption index decreases in an optical absorption spectrum ranging from an ultraviolet ray to visible radiation, the absorption edge being equal to or less than 400 nm, and the polyimide includes at least one selected from the group consisting of a fluorine group and a chlorine group.

A sealed article and methods of making the same. The sealed article includes a first and second glass pane. The first and second glass panes include inner surfaces opposite outer surfaces and at least one outer edge. The second glass pane is spaced apart from and positioned substantially parallel to the first glass pane with a low emissivity layer there between. An seal is formed between the first and second glass panes contiguous the low emissivity layer.

A glass panel unit manufacturing method includes a bonding step, a pressure reducing step, and a sealing step. The bonding step includes bonding together a first substrate and a second substrate with a first sealant to create an inner space. The pressure reducing step includes producing a reduced pressure in the inner space through an exhaust port that the first substrate has. The sealing step includes irradiating a second sealant, inserted into the exhaust port, with an infrared ray through a region, where a low emissivity film is nonexistent, of the second substrate.