Note: Descriptions are shown in the official language in which they were submitted.
CA 02640413 2008-07-25
WO 2007/101499 PCT/EP200'7/000415
Edge Protecting Band for Protecting the Edges of Multilayer Glass Panes,
in particular Fire Resistant Glass Panes
The present invention relates to an edge protecting band of the type described
in the
preamble to Patent Claim 1.
Proceeding from an edge protecting band as described in the applicant's DE 20
2004 001
010-U or DE-20 2005 001 617-U, which was developed for affixing to the edges
of
multilayer fire resistant glass panes, it is the objective of the present
invention to make
the border edges as resistant as possible to particles of dirt on the like.
Such resistance is necessary because the glass panes are subjected to a number
of'
stresses, especially during installation at construction sites. In particular,
this can involve
particles of dirt adhering to the edges before the glass panes are installed.
In the worst
case, this could result in the destruction of the edge protecting band, so
that moisture
could penetrate between the individual panes and the alkali silicate or
similar material
that is installed between them.
In order to achieve this objective, the present invention is such that there
isa type of layer
that possesses increased damping capability, in particular a layer of foam
within the band.
The layer of increased damping capability can also be formed from an adhesive
layer that
is of greatly increased thickness.
The provision of a layer of foam within the interior of the edge protecting
band increases
its damping capability to a particularly degree, i.e., no particles of dirt
such as grains of
sand or the like can be trapped without any problem without any damage being
done to
the outer foil that prevents the ingress of moisture. The foam acts as a sort
of buffer.
Configurations of the present invention are described in the secondary claims.
Provision
can be made such that the foam is formed from a PE foam film.
1
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It is practical that the foam be formed from a closed-cell foam. Provision can
also be
made such that the closed-cell foam be in the form of a diffusion barrier
and/or
mechanical barrier as has been discussed above.
It has been shown that the polyester or polypropylene outer layer shall be
provided with
additional elements. One version of the present invention is such that a
laminating
adhesive layer is applied to the outer sliding film and an aluminum film be
applied
thereon.
The aluminum foil that is additionally applied can perform various functions.
According
to the present invention, one such function is to make a type of adhesive
agent available
for a sealant that is applied at the installation site.
Additional features, details, and advantages of the present invention are
described in the
following description and in the drawings appended hereto. These drawings
shovv the
following:
Figure 1: a greatly enlarged cross section through an edge protection strip;
Figure 2: as in Figure 1, another configuration of an edge protection strip;
Figure 3: as in Figure 1, another configuration of an edge protection strip
Figure 4: as in Figure 1, an additional variant of the edge protection strip
according to
the present invention.
The drawings show the construction of an edge protection strip in which the
thickness of
the individual layers is greatly exaggerated for illustrative purposes.
In the example shown in Figure 1, the construction of the edge protection
strip, which
bears the overall number 1, consists-as viewed from bottom to top-of a layer 1
of
silicon paper 2, an adhesive layer 3, and a damping layer of PE foam 4 that is
covered by
an adhesive layer 5.
2
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In the example shown according to Figure 1, wherein the construction is
identical to that
in Figure 2, the adhesive layer follows an aluminum foil 6, a laminating
adhesive layer 7,
and finally the outer layer 8 that can, for example, be of polypropylene or
polyester.
Depending on the type of the outward oriented protective film 8, this can be
initially
treated with an adhesive lacquer, ionized, or the like in order to enhance the
adhesion of
the adhesive lamination. This is not unusual in the case of films of this
kind.
The thickness of the respective layers can be as follows:
2 (standard thickness)
3 (20 to 100 m)
4 (10 to 500 m)
(20 to 100 m)
6 (20 to 100 m)
7 (3 to 30 m)
8 (20 to 100 m)
Figure 2 shows a modified example of an edge protection strip la wherein the
satne
elements bear the same reference numbers as in Figure 1 with an additional
lower case
letter "a."
In the example shown in Figure 2, a silicon-paper covering 2a follows an extra
thick
adhesive layer 9, the damping characteristics of which is indicated (solely
for reasons of
simplicity of representation) by small arrows.
The damping, extra thick adhesive layer 9 is covered by aluminum foil 9a. This
is
followed by a laminating adhesive layer 7a and an outer layer 8a, e.g., of
propylerie. In
theory, this could also be of a polyethylene material.
3
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The thicknesses of these layers are as follows:
2a (standard thickness)
9 (50 to 300 m)
6a (20 to 100 m)
7a (3 to 30 m)
8a (20 to 100 m)
In Figure 3, as far as the layers 2 to 8 are concerned, the edge protecting
strip lb is built
up in the same way as the edge protecting strip 1.
In addition, in this embodiment, an adhesive layer 10 is laminated on to the
outer
polyester or polyethylene film 8, and once again there is an aluminum film 11
on this. In
this embodiment this forms the outer layer.
The thicknesses of the individual layers of the edge protecting strip 1 c are
as follows:
2b (standard thickness)
3b (20 to 100 m)
4b (10 to 500 m)
5b (20 to 100 m)
6b (20 to 100 m)
7b (3 to 30 m)
8b (20 to 100 m)
(3 to 50 m)
11 (5 to 100 m)
4
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Finally, Figure 4 shows the same edge protecting strip 1 c as in Figure 3,
although here an
outside, binary sealing compound 12 is also used. This can be applied to the
prepared
panes just before installation.
The thickness of this layer of butyl or binary sealing compound 12 will depend
on the
particular application.
The embodiments of the present invention described heretofore can, of course,
be
modified in many respects without departing from the underlying concept. This
applies,
in particular, to the above quoted thicknesses of the damping layer and the
sliding film
that faces outward.
