Spacer for insulating glazing units

Patent metadata

Field	Value
Publication number	US-2016201381-A1
Application number	US-201414909073-A
Country	US
Kind code	A1
Filing date	Aug 22, 2014
Priority date	Sep 30, 2013
Publication date	Jul 14, 2016
Grant date	—

Abstract

A spacer for an insulating glazing unit composed of at least two glass panes is described. The spacer includes a polymeric basic body having at least two mutually parallel side walls which are connected to one another by an inner wall and an outer wall, wherein the side walls, the inner wall and the outer wall enclose a hollow chamber. The spacer further includes an insulation film on at least the outer wall. The insulation film contains a polymeric carrier film and at least one metallic or ceramic layer, wherein a reinforcing strip is incorporated in each side wall and contains at least one metal or a metallic alloy.

First claim

1 .- 15 . (canceled)

16 . A spacer for an insulating glazing unit, comprising:
a polymeric basic body having a first side wall and a second side wall,
wherein the first side wall and the second side wall are formed parallel to each other,
wherein the first side wall and the second side wall are connected to each other by an inner wall and an outer wall,
wherein the first side wall, the second side wall, the inner wall, and the outer wall surround a hollow chamber, and
wherein the polymeric basic body has a glass fiber content from 0 wt.-% to 20 wt.-%;
an insulation film disposed on at least the outer wall, the insulation film containing a polymeric carrier film, the insulation film further containing a metallic layer or a ceramic layer; a first reinforcing strip embedded in the first side wall, the first reinforcing strip containing a metal or a metallic alloy; and a second reinforcing strip embedded in the second side wall, the second reinforcing strip containing a metal or a metallic alloy.

17 . The spacer according to claim 16 , wherein the first reinforcing strip and the second reinforcing strip each contain steel.

18 . The spacer according to claim 17 , wherein the steel in the first reinforcing strip and the second is not stainless steel.

19 . The spacer according to claim 16 , wherein the first reinforcing strip and the second reinforcing strip each has a thickness from 0.05 mm to 1 mm.

20 . The spacer according to claim 16 , wherein the first reinforcing strip and the second reinforcing strip each has a thickness from 0.1 mm to 0.5 mm.

21 . The spacer according to claim 16 , wherein the first reinforcing strip and the second reinforcing strip each has a thickness from 0.2 mm to 0.4 mm.

22 . The spacer according to claim 16 , wherein the first reinforcing strip and the second reinforcing strip each has a width from 1 mm to 5 mm.

23 . The spacer according to claim 16 , wherein the thickness of the polymeric carrier film of the insulation film is from 10 μm to 100 μm, wherein the thickness of the metallic or ceramic layer of the insulation film is from 10 nm to 1500 nm, and wherein the insulation film further contains at least one polymeric layer having a thickness from 5 μm to 100 μm.

24 . The spacer according to claim 23 , wherein the insulation film contains from two to four metallic layers or ceramic layers, which are in each case arranged alternatingly with at least one polymeric layer.

25 . The spacer according to claim 23 , wherein each metallic layer or ceramic layer of the insulation film contains iron, aluminum, silver, copper, gold, chromium, silicon oxide, silicon nitride, or alloys or mixtures thereof; and wherein the polymeric carrier film of the insulation film contains polyethylene terephthalate, ethylene vinyl alcohol, polyvinylidene chloride, polyamides, polyethylene, polypropylene, silicones, acrylonitriles, polymethyl acrylates, or copolymers or mixtures thereof.

26 . The spacer according to claim 16 , wherein the basic body contains polyethylene (PE), polycarbonates (PC), polystyrene, polybutadiene, polynitriles, polyesters, polyurethanes, polymethyl methacrylates, polyacrylates, polyamides, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), preferably polypropylene (PP), acrylonitrile butadiene styrene (ABS), acrylonitrile styrene (ASA), acrylonitrile butadiene styrene/polycarbonate (ABS/PC), styrene acrylonitrile (SAN), polyethylene terephthalate/polycarbonate (PET/PC), polybutylene terephthalate/polycarbonate (PBT/PC), or copolymers or derivatives or mixtures thereof.

27 . The spacer according to claim 16 , wherein the polymeric basic body has a glass fiber content from 0 wt.-% to 15 wt.-%.

28 . The spacer according to claim 16 , wherein the first reinforcing strip is perforated and the second reinforcing strip is perforated.

29 . The spacer according to claim 16 ,
wherein the first side wall, the second side wall, the inner wall, and the outer wall are each flat; wherein the inner wall is directly connected to first side wall and the second side wall; wherein the outer wall is connected via flat connection sections to the first side wall and the second side wall; and wherein each flat connection section and each of the first side wall and the second side wall form an angle from 120° to 150°.

30 . The spacer according to claim 16 , wherein the spacer has thermal conductivity of less than 0.25 W/(m*K).

31 . An insulating glazing unit, comprising:
a first glass pane and a second glass pane arranged parallel to each other; and a spacer according to claim 16 arranged in an edge region between the first glass pane and the second glass pane, wherein the first side wall faces the first glass pane and the second side wall faces the second glass pane; and an external sealing layer at least on the outer wall.

32 . The insulating glazing unit according to claim 31 , wherein the hollow chamber is completely filled or partially filled with a desiccant.

33 . The insulating glazing unit according to claim 32 , wherein the desiccant includes one or more of silica gels, molecular sieves, CaCl 2 , Na 2 SO 4 , activated carbon, silicates, bentonites, and zeolites.

34 . A method for producing a spacer for an insulating glazing unit, comprising:
forming a spacer according to claim 16 , including
arranging the first reinforcing strip and the second reinforcing strip parallel to each other;
overmolding the first reinforcing strip and the second reinforcing strip each with a polymeric material, wherein the polymeric basic body is created with ends;
applying an insulation film at least on the outer wall of the polymeric basic body; cutting the polymeric basic body to size; bending the polymeric basic body into a peripheral frame form; and connecting the ends of the polymeric basic body to each other.

35 . A method of using a spacer in a multipane glazing unit, comprising:
providing a spacer according to claim 16 ; and inserting the spacer in an insulating glazing unit.

Assignees

• Saint Gobain

Inventors

• Kuster Hans-Werner
• Schreiber Walter
• Rigaud Martin

Classifications

• E06B3/66304

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

• E06B3/6775

  Evacuating or filling the gap during assembly · CPC title

• E06B3/66361 Primary

  with special structural provisions for holding drying agents, e.g. packed in special containers · CPC title

• E06B2003/6638

  with coatings · CPC title

• E06B3/67304

  Preparing rigid spacer members before assembly · CPC title