Spacer for insulated glass units

Patent metadata

Field	Value
Publication number	US-12428904-B2
Application number	US-202017627406-A
Country	US
Kind code	B2
Filing date	Jul 14, 2020
Priority date	Jul 17, 2019
Publication date	Sep 30, 2025
Grant date	Sep 30, 2025

Abstract

A spacer for insulated glass units includes a main body co-extruded from first and second plastics, the second plastic having lower thermal conductivity and higher flexibility than the first plastic. The main body includes first and second side walls arranged parallel to each other, a glazing interior wall connecting to the side walls, an outer wall, which is arranged substantially parallel to the glazing interior wall and connects the side walls to one another directly or via connecting walls, and a cavity, which is enclosed by the side walls, the glazing interior wall, and the outer wall or by the side walls, the glazing interior wall, the outer wall, and the connecting walls. The main body is designed as a hollow profile formed from the second plastic, in which hollow profile the first plastic is arranged, at least in some regions, on the inside directly adjacent the hollow profile.

First claim

The invention claimed is:

1. A spacer for insulated glass units, comprising:
a main body co-extruded from a first plastic and a second plastic, comprising
a first side wall and a second side wall arranged parallel thereto,
a glazing interior wall, which connects the first and second side walls to one another;
an outer wall, which is arranged substantially parallel to the glazing interior wall and connects the first and second side walls to one another directly or via connecting walls;
a cavity, which is enclosed by the first and second side walls, the glazing interior wall, and the outer wall or by the first and second side walls, the glazing interior wall, the outer wall, and the connecting walls,

wherein the second plastic has lower thermal conductivity than the first plastic, and the main body is designed as a hollow profile, wherein the second plastic has an interior perimeter, and the first plastic directly contacts said interior perimeter, and an entire interior surface of the main body defines the cavity, wherein the entire interior surface is defined by a combination of the first plastic and the second plastic,
wherein the second plastic forming an exterior portion of the main body and sheathing the first plastic is more flexible than the first plastic, and
wherein the first side wall, the second side wall, the outer wall, the first connecting wall, and the second connecting wall of the main body are made from the first plastic and the second plastic such that a portion of the entire interior surface of the main body along the first side wall, the second side wall, the outer wall, the first connecting wall, and the second connecting wall is formed by the first plastic and a portion of the entire interior surface of the main body along the glazing interior wall is formed by the second plastic.

2. The spacer according to claim 1 , wherein the first plastic contains or is made of a recycled material, and the second plastic contains no recycled material.

3. The spacer according to claim 1 , wherein the first plastic is a glass-fiber-reinforced plastic and the second plastic has a lower glass fiber content than the first plastic or is a glass-fiber-free plastic.

4. The spacer according to claim 3 , wherein the glass-fiber-reinforced plastic has a glass fiber content from 10% to 40%.

5. The spacer according to claim 1 , wherein the first plastic and the second plastic are based on different polymers or copolymers.

6. The spacer according to claim 1 , wherein the glazing interior wall has a recess running substantially parallel to the first and second side walls and to accommodate a pane.

7. The spacer according to claim 1 , wherein the first plastic and/or the second plastic are foamed plastics.

8. A method for producing a spacer according to claim 1 comprising a step of co-extrusion of the first plastic and the second plastic to form the main body.

9. An insulated glass unit, at least comprising a first pane, a second pane, a spacer according to claim 1 , perimetrally arranged between the first pane and the second pane, wherein
the first pane is attached to the first side wall via a primary sealant,
the second pane is attached to the second side wall via a primary sealant,
the spacer separates an inner interpane space from an outer interpane space, and
a secondary sealant is arranged in the outer interpane space.

10. A method for producing an insulated glass unit according to claim 9 , comprising:
providing the spacer;
joining the spacer to form a spacer frame,
providing the first pane and the second pane;
fixing the spacer between the first pane and the second pane via the primary sealant,
pressing a pane assembly composed of the first and second panes and the spacer; and
filling the outer interpane space at least partially filled with the secondary sealant.

11. A method comprising manufacturing a building interior glazing, building exterior glazing, and/or façade glazing with the insulated glass unit according to claim 9 .

12. A spacer for insulated glass units, comprising:
a main body co-extruded from a first plastic and a second plastic, comprising
a first side wall and a second side wall arranged parallel thereto,
a glazing interior wall, which connects the first and second side walls to one another;
an outer wall, which is arranged substantially parallel to the glazing interior wall and connects the first and second side walls to one another directly or via connecting walls;
a cavity, which is enclosed by the first and second side walls, the glazing interior wall, and the outer wall or by the first and second side walls, the glazing interior wall, the outer wall, and the connecting walls,

wherein the second plastic has lower thermal conductivity than the first plastic, and the main body is designed as a hollow profile, wherein the second plastic has an interior perimeter, and the first plastic directly contacts said interior perimeter, and an entire interior surface of the main body defines the cavity, wherein the entire interior surface is defined by a combination of the first plastic and the second plastic, wherein the second plastic forming an exterior portion of the main body and sheathing the first plastic is more flexible than the first plastic, and
wherein the first side wall, the second side wall, the glazing interior wall, the first connecting wall, and the second connecting wall of the main body are made from the first plastic and the second plastic such that a portion of the entire interior surface of the main body along the first side wall, the second side wall, the glazing interior wall, the first connecting wall, and the second connecting wall of the main body is formed from the first plastic and a portion of the entire interior surface of the main body along the outer wall of the main body is formed by the second plastic.

13. A spacer for insulated glass units, comprising:
a main body co-extruded from a first plastic and a second plastic, comprising
a first side wall and a second side wall arranged parallel thereto,
a glazing interior wall, which connects the first and second side walls to one another;
an outer wall, which is arranged substantially parallel to the glazing interior wall and connects the first and second side walls to one another directly or via connecting walls;
a cavity, which is enclosed by the first and second side walls, the glazing interior wall, and the outer wall or by the first and second side walls, the glazing interior wall, the outer wall, and the connecting walls,

wherein the second plastic has lower thermal conductivity than the first plastic, and the main body is designed as a hollow profile, wherein the second plastic has an interior perimeter, and the first plastic directly contacts said interior perimeter, and an entire interior surface of the main body defines the cavity, wherein the entire interior surface is defined by a combination of the first plastic and the second plastic, wherein the second plastic forming an exterior portion of the main body and sheathing the first plastic is more flexible than the first plastic, and
wherein the first side wall, the second side wall, the first connecting wall, and the second connecting wall of the main body are made from the first plastic and the second plastic such that a portion of the entire interior surface of the main body along the first side wall, the second side wall, the first connecting wall, and the second connecting wall of the main body is formed by the first plastic and a portion of the entire interior surface of the main body along the glazing interior wall and the outer wall of the main body is formed by t

Assignees

• Saint Gobain

Inventors

• Kuster Hans-Werner
• Marjan Christopher
• Schreiber Walter

Classifications

• E06B3/67326

  Assembling spacer elements with the panes · CPC title

• E06B3/66361

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

• E06B3/66352

  with separate sealing strips between the panes and the spacer · CPC title

• B29C48/09

  Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels · CPC title

• B29C48/16

  Articles comprising two or more components, e.g. co-extruded layers · CPC title