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.

A hanging register storage unit for a bending machine for spacer frames of insulating glass panes includes: a plurality of hanging registers which each have a storage site for a stack of unbent spacer profiles; a storage station having a plurality of receiving sites for in each case one of the hanging registers; a removal station having at least one receiving site for one of the hanging registers; and a conveyor device for transporting hanging registers between the receiving sites of the storage station and the receiving site of the removal station.

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.

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.

An insulating glazing includes at least two substantially parallel glass sheets, which are spaced apart by at least one air- or gas-filled cavity forming a cavity internal to the glazing, a spacer, which is arranged at a periphery of the glass sheets and which keeps the two glass sheets spaced apart, and an adhesive bonding system arranged to fasten the spacer to each glass sheet via two of opposite fastening faces of the spacer, wherein the spacer includes, at least for one side of the glazing, a mirror-function reflective surface on an internal face of the spacer facing the internal cavity of the glazing.

Provided are a method for manufacturing a vacuum insulation glass panel and a device for closing a sealing cap, the method and the device being for exhausting air between two glass panels and sealing the same. The method for manufacturing a vacuum insulation glass panel, according to the present invention, heats the glass solder applied on the sealing cap before being put into a vacuum chamber, and then presses, by the operation of the elevating device, the sealing cap put into the vacuum chamber so as to join the sealing cap around the exhaust hole. The holder having the sealing cap is mounted in the clamping unit, and then the clamping unit is clamped to the glass panel assembly, thereby enabling the exhaust hole to be accurately closed with the sealing cap.

Embodiments herein relate to window spacer assemblies including surfaces with relatively high surface energy. In an embodiment, a window spacer assembly is included. The window spacer assembly including a spacer body having an inner surface, an outer surface, and lateral surfaces. The window spacer assembly further includes a first sealant disposed on the lateral surfaces. Portions of the window spacer assembly such as an outer surface or lateral surface of the spacer body and/or a moisture vapor barrier layer disposed over the outer surface can be treated to have a higher surface energy. Other embodiments are also included herein.

Method and Apparatus for fabricating a spacer frame for use in an insulating glass unit. One of a multiple number of possible spacer frame materials is chosen for the spacer frame. An elongated strip of the material is moved to a notching station where notches are formed at corner locations. The character of the notches is adjusted based on the selection of the metal strip material and more particularly to achieve bending of the material in an repeatable, straightforward manner. Downstream from the notching station the metal strip is bent into a channel shaped elongated frame member having side walls. Further downstream a leading strip of channel shaped material is severed or separated from succeeding material still passing through the notching and bending station.

A manufacturing method of a glass panel unit includes an adhesive disposing step, a pillar disposition step of disposing a plurality of pillars on the first panel. Each of the plurality of pillars includes a plurality of resin layers to stacked on one another. In each of the plurality of pillars, a contact area being in contact with the first panel and being included in the resin layer which is in contact with the first panel is different from a contact area being in contact with the second panel and being included in the resin layer which is in contact with the second panel.

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. The spacer includes a stack of two or more films including at least one resin film.