Support Element for Supporting a Window Frame

a support element and window frame technology, applied in the direction of doors/windows, building components, base frames, etc., can solve the problems of chimney effect, combustibility of frequently used insulation materials, etc., to prevent upward spread of flames, weaken the pressure on the main wall or outer wall, and prevent burn-through or at least significantly delay

Inactive Publication Date: 2020-07-02
ISO CHEM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent discusses the use of expandable graphite in materials to retard the fire-spread and prevent the formation of toxic gases and smoke. The expandable graphite has a starting temperature of at least 140°C and can be influenced by the fineness of the graphite. The use of a strip-shaped support element or building section can help prevent or delay the upward spread of flames and smoke gas in buildings. The technical effect of this patent is to provide a safe and effective way to protect firefighters and people in buildings during fire outbreaks.

Problems solved by technology

One problem with the use of a composite thermal insulation system (or external wall insulation system, EWIS), in which an outer wall installation casing is usually used, is the combustibility of frequently used insulation materials, which comprise, for example, rigid polystyrene foam such as rigid expanded polystyrene foam (EPS) and rigid extruded polystyrene foam (XPS).
In particular, when a house is on fire, the flames can spread upward via the façade or possible gaps between the inner wall and the outer wall to the next-higher story, which can lead to the development of a chimney effect.

Method used

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  • Support Element for Supporting a Window Frame
  • Support Element for Supporting a Window Frame
  • Support Element for Supporting a Window Frame

Examples

Experimental program
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production examples

Example 1A: Support Element with Waterglass

[0099]Inert sodium or potassium silicate (10-20%) is mixed to form a homogeneous mass with the base material, e.g., a rigid PUR foam or a rigid PUR / PIR foam, and optionally with one or more additives such as a curing agent. The mixture is pressed in a mold and cured by heat. Panels can be cut and processed into strip-shaped support elements.

example 1b

ement with Expandable Graphite

[0100]Rigid PUR and / or PIR foam which originates from production residues and / or recycled material, e.g., old insulating panels, and which has been ground to a maximum particle size of approximately 5 mm, preferably of approximately 1 mm, is mixed with 5-10%, preferably 7.5%, of expandable graphite (average particle size, approximately 1 mm) and binder material, e.g., in liquid form, in a ratio of 1:5, calculated on the basis of the weight of the ground rigid foam. The mixture is introduced into a panel mold and treated by heat and pressure in a pressing direction P perpendicular to the surface of the panels, so that a rigid foam material with a bulk density of approximately 550 kg / m3 is obtained. The thickness of the panels is preferably 2-7 cm.

[0101]Alternatively, comminuted rigid foam pieces, expandable graphite flakes, and binder material can be introduced layer by layer in alternation (e.g., by interspersing) and then pressed.

[0102]Cured panels res...

example 1c

ement with an Expandable Graphite-Containing Layer

[0103]In the alternative embodiment shown in FIG. 3c, the upper layer 47 of the produced panel (i.e., a surface perpendicular to the pressing direction P) has a thickness of at least 10 mm, preferably of 15 mm, and has been combined with expandable graphite, wherein the remainder of the support element has not been combined with expandable graphite.

[0104]The strip-shaped support elements are produced as described in Example 1B.

Fire Tests

[0105]According to the test criteria of DIN 1366-5, support elements 2 of rigid PUR / PIR foam with expandable graphite, produced according to Example 1B with a thickness of 30 mm or 50 mm, were exposed to flames at 180° C. (see test layout in FIG. 5d), during which procedure the increase in temperature was measured on the opposite side after 5, 15, and 25 minutes in comparison to corresponding rigid foam without expandable graphite.

[0106]On the side facing away from the flames, the temperatures were me...

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Abstract

A strip-shaped support element for supporting a window frame comprises an intumescent material such as expandable graphite or sodium and / or potassium silicate. In particular, the support element comprises intumescent material on at least one surface, optionally on all surfaces, in a thickness of at least 0.25 mm.

Description

FIELD OF THE INVENTION[0001]The invention relates to a strip-shaped support element for supporting a window frame, especially an outer face wall installation casing.[0002]The invention also relates to a section of a building or a building comprising at least one support element and also the use of the support element for making a building fire-retardant, e.g., as a fire barrier, i.e., for preventing the spread of flames and / or smoke gas upward along the façade of the building, or in / on a composite thermal insulation system, and / or for decreasing the rise in temperature on the side of the support element facing away from the fire.[0003]Support elements for supporting a window frame, especially outer face wall installation casings, have been used for some years in conjunction with composite thermal insulation systems to extend a wall opening for a window artificially outward. According to EP 2 639 394 A2, a support part of rigid, load-bearing foam is screwed laterally to the wall and ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E04B1/94
CPCE04B1/945E04B1/943E06B1/003E06B1/02E06B1/6023E04B1/7641
Inventor DEISS, MARTIN
Owner ISO CHEM GMBH
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