Glass panel unit, glass window provided with same, and method for manufacturing glass panel unit

Patent metadata

Field	Value
Publication number	US-10988973-B2
Application number	US-201615763960-A
Country	US
Kind code	B2
Filing date	Sep 14, 2016
Priority date	Sep 29, 2015
Publication date	Apr 27, 2021
Grant date	Apr 27, 2021

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.

First claim

The invention claimed is:

1. A method for manufacturing a glass panel unit which includes:
a first panel including at least a first glass plate;
a second panel facing the first panel and including at least a second glass plate;
a sealing member formed in a frame shape and bonded hermetically to respective facing peripheral portions of the first panel and the second panel; and
at least one spacer provided in an inner space between the first panel and the second panel,
wherein the inner space being a reduced pressure space,
the at least one spacer including a resin body and at least one ultraviolet protective layer provided on a surface of the resin body, and
the spacer being formed by punching a composite sheet including a resin sheet and the ultraviolet protective layer formed either on one surface or on both surfaces of the resin sheet,
the method comprising:
a composite sheet forming step of forming the ultraviolet protective layer on at least one surface of the resin sheet;
a spacer forming step of forming a plurality of spacers by punching the composite sheet including the resin sheet and the ultraviolet protective layer;
a spacer arrangement step of arranging the plurality of spacers between a first substrate including at least a first glass substrate and a second substrate including at least a second glass substrate;
a glass adhesive disposing step of disposing a glass adhesive in a frame shape between the first substrate and the second substrate;
an evacuation step of evacuating a space located between the first substrate and the second substrate and surrounded with the glass adhesive; and
a bonding step of bonding the first substrate and the second substrate together with the glass adhesive in the shape of the frame.

2. A method for manufacturing a glass panel unit which includes:
a first panel including at least a first glass plate;
a second panel facing the first panel and including at least a second glass plate;
a sealing member formed in a frame shape and bonded hermetically to respective facing peripheral portions of the first panel and the second panel; and
at least one spacer provided in an inner space between the first panel and the second panel,
wherein the inner space being a reduced pressure space,
the at least one spacer including a resin body and at least one ultraviolet protective layer provided on a surface of the resin body, and
the spacer being formed by punching a composite sheet including a resin sheet and the ultraviolet protective layer formed either on one surface or on both surfaces of the resin sheet,
the method comprising:
a composite sheet forming step of forming the ultraviolet protective layer on at least one surface of the resin sheet;
a spacer forming step of forming a plurality of spacers by punching the composite sheet including the resin sheet and the ultraviolet protective layer;
a step including disposing a glass adhesive in a frame shape on a peripheral portion of a surface of a first substrate including at least a first glass substrate, and arranging the plurality of spacers in a space surrounded with the glass adhesive;
a substrate arrangement step of arranging a second substrate including at least a second glass substrate to allow the second substrate to face the surface of the first substrate on which the glass adhesive is disposed;
an evacuation step of evacuating a space located between the first substrate and the second substrate and surrounded with the glass adhesive; and
a bonding step of bonding the first substrate and the second substrate together with the glass adhesive in the shape of the frame.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Uriu Eiichi
• Abe Hiroyuki
• Ishibashi Tasuku

Classifications

• Y02B80/22

  Glazing, e.g. vaccum glazing · CPC title

• Y02A30/249

  Glazing, e.g. vacuum glazing · CPC title

• B32B3/18

  characterised by an internal layer formed of separate pieces of material {which are juxtaposed side-by-side (B32B5/02 takes precedence)} · CPC title

• E06B3/67321

  Covering spacer elements, e.g. with sealants · CPC title

• E06B3/66304

  Discrete spacing elements, e.g. for evacuated glazing units · CPC title