Abstract: 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, and the seal. The spacer is placed between the first glass panel and the second glass panel.

Abstract: A glass panel unit manufacturing method includes a punching step and a pillar mounting step. In the punching step, a punch punches at least one of a plurality of portions from a base material of a sheet to form at least one pillar. Each of the plurality of portions is surrounded by a corresponding one of a plurality of loop-shaped grooves in the base material. In the pillar mounting step, the at least one pillar is mounted on a surface of a first substrate including a glass pane.

Abstract: The glass panel unit is a predetermined part separated from a completed assembly obtained by subjecting a temporary assembly to a predetermined process. In the temporary assembly, the inside space (500) enclosed by the first and second glass substrates and the frame is divided into the first space and the second space with the partition and the gas adsorbent is inside the first space. The predetermined process includes: converting the first space into the evacuated space by evacuating the first space through the gas passage, the second space, and the outlet; and changing a shape of the partition to close the gas passage to form the seal enclosing the evacuated space. The predetermined part includes: a first and second glass panels being parts of the first and second glass substrates; the seal; the evacuated space; and the gas adsorbent.

Abstract: The gas adsorbent of one aspect according to the present invention includes is included in the glass panel unit. The gas adsorbent includes: a substrate made of fiber or a porous substance, of inorganic material; and a liquid containing a getter attached to the substrate.

Abstract: A manufacturing method of a glass panel for a glass panel unit includes a melting step, a spreading step, an annealing step, a cutting step, and a spacer disposition step. The spacer disposition step is a step of disposing spacers onto a glass sheet and is performed by a spacer disposition device prior to the cutting step.

Abstract: A multiple pane includes a pair of glass panels spaced by spacers and sealed at peripheries thereof. The multiple pane includes a plurality of spacers interposed between the pair of glass panels, a hermetic bond that hermetically bonds peripheries of the pair of glass panels to each other and a space between the pair of glass panels that is sealed so as to be in a reduced pressure state. Each of the plurality of spacers is a porous member provided on one glass panel of the pair of glass panels.

Abstract: A glass panel unit includes: a sealing member arranged between a first panel and a second panel, which are arranged to face each other with a predetermined gap left between themselves, to hermetically bond the first panel and the second panel together; and an internal space sealed heimetically with the first panel, the second panel, and the sealing member. The glass panel unit further includes a spacer arranged in the internal space so as to be in contact with the first panel and the second panel. The spacer includes a plurality of resin layers that are stacked one on top of another in a direction in which the first panel and the second panel face each other. At least any two of the plurality of resin layers have different elastic moduli.

Abstract: A glass panel unit according to an example of the present disclosure includes a first glass panel and a second glass panel disposed to face the first glass panel. The glass panel unit includes: a seal having frame shape and hermetically binding the first glass panel and the second glass panel together; and a depressurized space surrounded by the first glass panel, the second glass panel, and the seal. The glass panel unit includes spacers between the first glass panel and the second glass panel. The spacers include a macromolecular resin material including molecular chains. Of the molecular chains, the number of molecular chains oriented in an orthogonal direction is larger than the number of molecular chains oriented in a counter direction. The orthogonal direction is a direction orthogonal to the counter direction, which is a direction in which the first and second glass panels face each other.

Abstract: A glass panel unit having an inner space at a reduced pressure and a building component including such a glass panel unit are provided such that no traces of an exhaust pipe are left on their outer surface. To achieve this, 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 (10) and a second substrate (20) with a first sealant (410) to create an inner space (510). The pressure reducing step includes producing a reduced pressure in the inner space (510) through an exhaust port (50) that the first substrate (10) has. The sealing step includes melting a second sealant (420) inserted into the exhaust port (50) by locally heating the second sealant (420), and deforming the second sealant (420) by pressing the second sealant (420) toward the second substrate (20), to seal the exhaust port (50) up with the second sealant (420) melted and deformed.

Abstract: An object of the disclosure is to provide a glass panel and a glass window which are configured to stably maintain a depressurized space therein even when their spacers contain a resin. A glass panel unit of an aspect of the disclosure includes: a first glass pane; a second glass pane facing the first glass pane; a frame member which has a frame shape and which the first and second glass panes are bound together through; and spacers containing a resin and disposed between the first and second glass panes. A depressurized space is provided between the first glass pane and the second glass pane. The first and second glass panes are respectively to be exterior and interior panes. The first glass pane has lower ultraviolet transmittance than the second glass pane.

Abstract: A glass panel unit manufacturing method includes a bonding step, an exhausting step, and a sealing step. The bonding step includes bonding together, with a sealing member, a first glass panel and a second glass panel to form an inner space. The exhausting step includes exhausting air from the inner space through an exhaust pipe detachably connected to an exhaust port.

Abstract: An object of the disclosure is to provide a manufacturing method of a glass panel unit which is simply performable. A manufacturing method of a glass panel unit of an aspect of the disclosure includes housing a preassembled component including a first glass panel, a second glass panel, and a frame member disposed between the first and second glass panels to hermetically bond the first glass panel to the second glass panel in a chamber and evacuating the chamber to achieve a reduced pressure state. The frame member has an exhaust port communicating with inside and outside spaces. The chamber has a thermally conductive pressing part movable to press the first and second glass panels in a direction in which the first and second glass panels approach each other. The manufacturing method includes heating the frame member by a heater to deform the frame member to close the exhaust port.

Abstract: 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 including a wired glass pane and a second substrate including a non-wired glass pane with a first sealant in a frame shape 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 the second sealant with an infrared ray externally incident through the second substrate to seal the exhaust port up with the second sealant that has melted.

Abstract: 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.

Abstract: A glass panel unit includes a first glass panel, a second glass panel, a sealing portion in a frame shape, and a getter. The sealing portion hemietically bonds together respective peripheral portions of the first glass panel and the second glass panel. An inner space is formed at a reduced pressure between the first glass panel and the second glass panel. The getter is arranged in the inner space. The getter is arranged in a frame region extending along the sealing portion and located within a predetermined distance from each peripheral edge of the glass panel unit, so as to be covered with a building component frame.

Abstract: The glass panel unit includes a first glass substrate, a second glass substrate, a sealing member, an inside space, and a plurality of spacers. The inside space is hermetically enclosed by the first glass substrate, the second glass substrate, and the sealing member, and has reduced pressure. The plurality of spacers are placed in the inside space. At least one of the first glass substrate and the second glass substrate is a wire-embedded glass panel with a wire structure embedded therein. The plurality of spacers are arranged so as to overlap with part of the wire structure in a plan view.

Abstract: 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.

Abstract: Disclosed herein is 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 which extend along edges of the first panel and the second panel, 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 contains a polyimide. 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 is equal to or less than 400 nm.