DE29813143U1 - Hollow plastic profile - Google Patents

Description

Lippert, Stachow, Schmidt

& Partners 21 July 1998

Patent Attorneys
Frankenforster Street 135-137

[>51427 Berghausen Gladbach

Roplasto Fensterprofile GmbH 51469 Berchtesgaden

Plastic hollow profile

The invention relates to a plastic hollow profile comprising several chambers as a frame or sash profile for windows and/or doors with at least one main chamber extending in the longitudinal direction of the profile and outer and inner chambers arranged on both sides of the main chamber and extending in the longitudinal direction of the profile.

A plastic hollow profile of the type mentioned above is known, for example, from utility model DE 93 21 396. The known profile is designed as a so-called "four-chamber profile". In technical jargon, four-chamber profiles are profiles in which, viewed from the outside in or from the inside out, four chambers are arranged next to one another, with a main chamber enclosing a reinforcement profile and outer and inner chambers arranged on both sides of the main chamber. If you look at the profile as a whole, more than four chambers are usually provided, since the profile can also be divided several times from the side intended for attachment to a building structure in the direction of the stop for a door or window sash. When considering the heat transfer through such a profile, however, it is relevant how many chambers are next to one another from the outside in or from the inside out. The terms "outside" and "inside" always refer to the installation position of the profile. For example, the profile described in the utility model DE 93 21 396 has horizontal divisions by partition walls

which mainly serve to stiffen the profile, so that there are more than four chambers in total. Nevertheless, such a profile would be called a four-chamber profile.
5

Two-chamber systems and three-chamber systems are known from practice, but these are increasingly being replaced by four-chamber systems, as the aim for window, door and frame profiles is to achieve a low maintenance cost when designing glazing for energy-saving reasons.

me transmission coefficient (K-value in —- ).

m K
The more chambers the profile has next to each other, viewed from the outside to the inside or from the inside to the outside, the better the K value will be. Good thermal insulation is also achieved by making the profile as deep as possible. However, there are certain limits to this profile depth and therefore to the number of chambers that can be provided next to each other.

The invention is therefore based on the object of improving a plastic hollow profile of the type mentioned above with regard to the thermal insulation properties, without increasing its construction depth by additional chambers or the like.

The object is achieved according to the invention in that the outer and/or inner chambers are filled with foamed plastic.

This improves both the insulation and increases the strength and rigidity of the profile.
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The outer and/or inner chambers can, for example, be filled with rigid foam.

In a variant of the plastic hollow profile according to the invention, it is provided that a plastic is used as the rigid foam, the basic composition of which in the cured state is approximately the same as or similar to that of the rest of the profile. If the plastic hollow profile, for example,

If the container is made of extruded PVC, the outer and/or inner chambers may be filled with PVC foam.

Alternatively, polyurethane can be used as rigid foam.

In the preferred embodiment of the plastic hollow profile according to the invention, it is provided that the main chamber encloses a reinforcing profile and that at least two outer chambers arranged next to one another and one inner chamber or two inner chambers arranged next to one another and one outer chamber are provided, wherein the outer chambers and inner chambers do not enclose a reinforcing profile.

The outer and/or inner chambers can be further divided by partition walls that extend approximately parallel to the fastening surface or support surface of the profile when the profile is installed.

Preferably only the inner chambers are filled with rigid foam.

The rigid foam filling of the outer and/or inner chamber can, for example, have been obtained by co-extrusion with the profile.

The invention is explained below using an embodiment shown in the drawing.

The figure shows a cross section through a window sash 1 and through an associated window frame 2, which is designed according to the invention.

The frame 2 is designed as a four-chamber plastic hollow profile and has a main chamber 4 with a reinforcement profile 3 that extends axially. The main chamber 4 is bordered on the outside by an outer chamber 6 that is divided in height by a partition wall 5. On the

On the side of the main chamber remote from the outer chamber 6, two inner chambers 7 are provided next to each other, which are also each divided horizontally by an intermediate wall 5.

The inner chambers 7 of the frame 2 are filled with a rigid PVC foam that was co-extruded with the profile.

The drawing shows the window sash 1 in its closed position resting against the sealing stop 8 of the window frame 2. The plastic hollow profile of the window sash 1 is also designed as a four-chamber profile, with a main chamber 9 not provided with a reinforcing profile being provided, which is arranged between two outer chambers 10 and an inner chamber 11. In the embodiment shown, the outer chambers 10 and the inner chamber 11 of the window sash 1 are not filled with foam, but the invention is to be understood in such a way that the outer chambers 10 and/or the inner chamber 11 can also be filled with foam in the plastic hollow profile of the window sash 1.

Lippert, Stachow, Schmidt

& Partners 21 July 1998

Patent Attorneys Frankenforster Straße 135-137

D-51427 Berghausen Gladbach

Roplasto Window Profiles GmbH 51469 Berqisch Gladbach

Plastic hollow profile

List of reference symbols

1 window sash

2 frame

3 Reinforcement profile

4 Main chamber

5 partition walls

6 outer chambers 7 inner chambers

8 Seal stop

9 Main chamber

10 Outer chamber

11 Inner chamber

Claims (7)

Lippert, Stachow, Schmidt & Partner 21 July 1998 Patent Attorneys Frankenforster Straße 135-137 D-51427 Berglsch Gladbach Roplasto Fensterprofile GmbH 51469 Bereisen Gladbach Plastic hollow profile claims 1. A hollow plastic profile comprising several chambers as a frame or sash profile for windows and/or doors with at least one axially extending main chamber and axially extending outer and inner chambers arranged on both sides of the main chamber, characterized in that
characterized in that the outer and/or inner chambers (6, 10; 7, 11) are filled with foamed plastic. 2. Plastic hollow profile according to claim 1, characterized
characterized in that the outer and/or inner chambers (6, 10; 7, 11) are filled with a rigid foam. 3. Plastic hollow profile according to one of claims 1 or 2, characterized in that a plastic is used as the rigid foam, the basic composition of which in the hardened state corresponds approximately to that of the rest of the profile or is similar to it. 4. Plastic hollow profile according to one of claims 1 or 2, characterized in that a polyurethane is used as the rigid foam. 5. Plastic hollow profile according to one of claims 1 to 4, characterized in that the main chamber (4) encloses a reinforcing profile (3) and that at least two adjacent outer chambers and one inner chamber or two adjacent inner chambers and one outer chamber are provided. 6. Plastic hollow profile according to claim 5, characterized
characterized in that the outer and/or inner chambers (6, 10; 7, 11) are divided by intermediate walls (5) which, in the installed position of the profile, extend approximately parallel to the fastening surface or support surface of the profile. 7. Plastic hollow profile according to one of claims 5 or 6, characterized in that the inner chambers (7) are filled with rigid foam.