Getter material, method for manufacturing getter material, method for manufacturing getter-material-containing composition, and method for manufacturing glass panel unit

Patent metadata

Field	Value
Publication number	US-2021009471-A1
Application number	US-201917041873-A
Country	US
Kind code	A1
Filing date	Mar 15, 2019
Priority date	Mar 30, 2018
Publication date	Jan 14, 2021
Grant date	—

Abstract

A method for manufacturing a glass panel unit, which reduces the amount of a getter material to enable a gettering ability to be realized at a relatively low temperature less likely to cause damage. The method includes a step of producing a getter material by heating an unprocessed getter material at a temperature higher than a prescribed temperature Te; a step of producing a preassembled component including a first and second glass pane, a heat-fusible sealing material, an internal space, and a gas adsorbent containing the getter material, and an evacuation port; a step of forming a frame body hermetically bonding the first glass pane and the second glass pane together by melting the heat-fusible sealing material with heat; and a step of heating the gas adsorbent at the prescribed temperature Te while the internal space is evacuated by exhausting air in the internal space through the evacuation port.

First claim

1 . A method for manufacturing glass panel unit, the method comprising:
a step of producing a getter material by heating an unprocessed getter material at a temperature higher than a prescribed temperature; a step of producing a preassembled component including
a first glass pane,
a second glass pane facing the first glass pane,
a heat-fusible sealing material disposed between the first glass pane and the second glass pane, being in contact with the first glass pane and the second glass pane, and having a frame shape,
an internal space surrounded by the first glass pane, the second glass pane, and the heat-fusible sealing material having the frame shape,
a gas adsorbent containing the getter material and disposed in the internal space, and
an evacuation port connecting the internal space to an outside space;
a step of forming a frame body by melting the heat-fusible sealing material with heat such that the frame body hermetically bonds the first glass pane and the second glass pane together; and a step of heating the gas adsorbent at the prescribed temperature while the internal space is evacuated by exhausting air in the internal space through the evacuation port.

2 . The method of claim 1 , wherein
the preassembled component further includes
a partition dividing the internal space into a first space and a second space having the evacuation port; and
an air passage connecting the first space to the second space, and
the method further includes a step of, after the gas adsorbent is heated, deforming the partition at a temperature higher than the prescribed temperature to form a partition wall closing the air passage while the internal space is evacuated by exhausting air through the evacuation port, and defining the first space and the second space by the partition wall.

3 . The method of claim 1 , wherein
the unprocessed getter material is heated in an atmosphere of an inert gas containing at least one kind selected from the group consisting of neon, xenon, and argon or in an evacuated state.

4 . A method for manufacturing a getter material, the method including
generating a body of an unprocessed getter material as a solid residue by vaporization and desorption of a retention component held by the unprocessed getter material by heating the retention component; and producing, after the desorption of the retention component, a getter material by causing the body to adsorb an adsorption component having bond energy for bonding to the body, the bond energy being lower than a prescribed temperature when converted into temperature, the getter material being configured to, after vaporization and desorption of the adsorption component at a temperature higher than or equal to the bond energy converted into the temperature, at least adsorb a gas component different from the adsorption component.

5 . The method of claim 4 , wherein
the adsorption component includes at least one kind of component selected from the group consisting of nitrogen, hydrogen, carbon dioxide, water, neon, xenon, carbon hydride, and carbon hydride derivative.

6 . The method of claim 4 , wherein
the body is zeolite or copper ion exchanged zeolite.

7 . A method for manufacturing a getter-material-containing composition, the method comprising
mixing the getter material produced by the method of claim 4 with a solvent.

8 . A getter material comprising:
an adsorption component; and a body on which the adsorption component is adsorbed, the adsorption component being adsorbed on the body having bond energy, the bond energy being lower than or equal to a prescribed temperature when converted into temperature, the getter material configured to, after vaporization and desorption of the adsorption component at a temperature higher than or equal to the bond energy converted into the temperature, at least adsorb a gas component different from the adsorption component.

9 . The getter material of claim 8 , wherein
the adsorption component is a first adsorption component and the getter material further includes a second adsorption component adsorbed on the body by bond energy, the bond energy being higher than the prescribed temperature when converted into the temperature. the getter material contains the first adsorption component whose content is greater than a content of the second adsorption component.

10 . The getter material of claim 8 , wherein
the body is a solid residue resulting from vaporization and desorption of the retention component held by the unprocessed getter material.

11 . The getter material of claim 8 , wherein
the adsorption component includes at least one kind of component selected from the group consisting of nitrogen, hydrogen, carbon dioxide, water, neon, xenon, carbon hydride, and carbon hydride derivative.

12 . The getter material of claim 8 , wherein the body is zeolite or copper ion exchanged zeolite.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Abe Hiroyuki
• Uriu Eiichi
• Hasegawa Kazuya
• Ishibashi Tasuku
• Nonaka Masataka
• Shimizu Takeshi
• Ishikawa Haruhiko

Classifications

• Y02B80/22

  Glazing, e.g. vaccum glazing · CPC title

• Y02A30/249

  Glazing, e.g. vacuum glazing · CPC title

• B01J20/186

  Chemical treatments in view of modifying the properties of the sieve, e.g. increasing the stability or the activity, also decreasing the activity · CPC title

• B01J20/3078 Primary

  Thermal treatment, e.g. calcining or pyrolizing · CPC title

• C03C27/06 Primary

  Joining glass to glass by processes other than fusing (fusing C03B23/20; units for use as elements for closing wall or like openings and comprising two or more parallel glass panes in spaced relationship, the panes being permanently secured together E06B3/66) · CPC title