FIELD OF THE INVENTION
The present disclosure relates to wall panel attachment systems. More
particularly, the present disclosure pertains to methods of attaching
wall panels to exterior wall surfaces.
There are various problems with known aluminum composite panel
attachment systems. Conventionally, such systems have relied upon
adhesive or weather sealant to "seal" the aluminum panel from the
elements. However, under exposure to heat and cold and moisture, the
adhesive or silicone breaks down. This, in turn, compromises the
stability of the system and creates an undesirable appearance. Even
when such a seal is functional, there may be undesirable effects on the
aluminum composite panels as the interior environment can trap heat
which affects the panels, creating "oil-canning" or popping in response to
the pressure differential. In spite of such seals, such systems can also
trap moisture in the wall cavity, which results in oxidation of parts and
staining or deterioration of exterior wall surfaces.
BACKGROUND OF THE INVENTION
Architectural wall panel systems,. including both metal and composite
wall panel systems, have been used extensively for some time, primarily
in the commercial and industrial building markets. In recent years the
popularity of composite wall panel systems, in particular, has been
increasing steadily. There are a number of factors that may be credited
for the wide-spread and increased use of such wall panel systems. One

such factor is the high cost to construct commercial and industrial
buildings, which tend to be relatively large, from stone or brick. Wood is
not a suitable substitute due to the large loads the buildings supporting
structure must withstand. Another factor effecting the increased use of
metal and composite wall panel systems is the high durability of the
systems. Both the metals and composites used to make the panels for
wall panel systems are highly resistant to damage from sun, dirt,
moisture, fire, and many other environmental elements. Consequently,
the metal and composite wall panel systems have a long life, and may
require less maintenance than other alternative building materials and
systems.
Architectural wall panel systems can generally be placed into one of two
categories: face-sealed architectural panel systems or vented rain-screen
architectural panel systems. Face-sealed architectural panel systems
include those systems that have a sealant in both the horizontal and
vertical joints between adjacent wall panels. The sealants make the wall
panel system impermeable to air and water, and may include caulking,
gaskets, or other sealants with a similar function. Vented rain-screen
architectural panel systems are those systems designed to allow
permeability through the joints between adjacent wall panels. The
permeable joints allow for breathability and rapid pressure equalization
within the wall panel system to prevent pressure buildups behind the
wall panels.

Architectural wall panel systems have many advantages, as discussed
above, however, these systems may also present a number of challenges
and disadvantages. One such challenge is the thermal expansion and
contraction of the wall panels. The metal and composite materials most
commonly used in architectural wall panel systems are subject to natural
expansion and contraction due to changes in atmospheric conditions,
including heat and humidity. If a means of accommodating this inherent
thermal cycling is not provided in the attachment system of the
architectural wall panel system then the panels can become warped and
cracked, requiring repairing or replacement. Another challenge that may
be associated with architectural wall panel systems is directly related to
the first issue of thermal cycling, and relates to the effectiveness of
sealants used in joints between adjacent wall panels in face-sealed
architectural panel systems. Because the joints increase and decrease in
size during thermal cycling, sealants often become dislodged and/or
cracked and are thereafter ineffective at preventing the infiltration of air
and water. As a result, sealants used in face-sealed architectural panel
systems have proven disappointingly ineffective.
Another disadvantage associated with many architectural wall panel
systems is the complexity of the system, including the number of pieces
and parts needed and the extensive time and labor required to install
the complex system. In particular, where a form of attachment clips are
used to secure the wall panels to the substructure, each clip must
typically be fastened to the wall panel and to the substructure, either
directly or indirectly. This means that if an extremely high number of
fasteners are used, it results in a great deal of time and effort spent in

installation of the systems just to secure the clips to the panels prior to
attaching the panels to the structure.
A number of different attachment systems have been introduced and
employed in an attempt to overcome the challenges and alleviate the
disadvantages discussed above. One known attachment system includes
a plurality of locking members secured directly to, or formed integrally
with, the outer surface of the return flanges of wall panels. The locking
members secure the panel to a retaining member, which is itself secured
to a surface of a building structure. The locking members are shaped
such that they may be forced into a channel, but cannot be removed
from that channel, such as angled surfaces with an apex adjacent the
retaining member that resemble half of an arrowhead. The system may
also optionally provide a drainage channel to carry water and other
debris away from the surface of the building structure. While this
attachment system allows for more efficient installation of an
architectural wall panel system, it suffers from the disadvantage
mentioned above relating to thermal cycling of the wall panel system
because it does not allow for movement of the wall panels. In addition,
the attachment system suffers from a number of new disadvantages,
such as not providing adequate attachment strength to withstand some
natural weather conditions, and making it extremely difficult to repair or
replace installed wall panels as the locking members prevent the panel
from being removed from the retaining members.

Other known attachment systems for securing wall panels of an
architectural wall panel system to a building surface utilize some form of
an insert wedged between the two adjacent flanges of adjacent wall
panels, while the flanges are received in a channel. The insert is secured
between the two flanges by a fastener, and fits snuggly there between to
provide a seal against water and air infiltration. The insert may be made
of an elastomeric material to allow for thermal expansion and contraction
of the wall panels. This system, however, uses a high number of parts,
and the thermal cycling of the system is limited by the small amount of
movement allowed by the elastomeric insert. Furthermore, the
elastomeric insert is subject to wear from the natural elements it will be
exposed to, and subject to failure due to these elements and repeated
expansion and contraction as a result of the thermal cycling of the wall
panel system.
Additional attempts at improved attachment systems have included
attachment systems utilizing variously shaped flanges extending along at
least one edge of the wall panel to facilitate attachment of the panel to a
building surface; attachment systems using rotatable retaining members
secured to the mounting surface that rotate between a first (narrow)
position designed to allow placement of the wall panels and a second
(broad) position extending into slots in the wall panel flange to secure the
panel in place, such as, for example, a T-shaped retaining member that
rotates about an axis parallel to the wall panel flanges; and attachment
systems having vents and filler strips which slide into grooves and are
positioned within the gaps between adjacent wall panels to provide a
watertight seal while allowing air flow there through. None of these

attachment systems has proven noticeably advantageous over
conventional attachment methods in providing a more efficient, reliable,
and practical means of attaching architectural wall panels to the surface
of a structure.
There is therefore a need for an improved architectural wall panel system,
and specifically an improved attachment system for attaching
architectural wall panels, that alleviates one or more of the disadvantages
discussed herein.
SUMMARY OF THE THE INVENTION
This system is developed according to the rain screen principle. This
means that the wall cavity is vented, resulting in a temperature. This
system allows engineer to form ACP as tray and install system as clip
system. The system comprises of two profile say Profile ALPL/P/211
and Profile ALPL/P/212. These two profile forms a hanging system
which restrict entry of air, water, dust or any foreign particle.
Profile 1 - ALPL/P/211. Profile is made from aluminum alloy 6063 T5
and is also called omega profile. This profile will be screwed to the double
T fixing so that they remain perfectly plum with the adjustments that the
system allows.

Profile 2 - ALPL/P/212. Profile is made from aluminum alloy 6063 T5
and is used for hanging the Aluminum Composite Panel. On this profile
Ethylene Propylene Diene Monomer (EPDM) gasket. This profile also
called external hanging part are fitted over the Profile 1 - ALPL/P/211.
EPDM hanging gasket part is there to avoid the vibration noises that are
caused by wind loadings, road traffic, etc
The Hanging System for aluminum composite panel includes a plurality
of wall panels. Each wall panel has an exterior flat surface and at least
two side surfaces bent generally perpendicularly to the exterior flat
surface. In this way, a hollow interior portion is defined. Preferably,
each wall panel comprises an aluminum composite material.
The objectives of this invention include the following items.
1. To eliminate the dependency of the sealing integrity of the shop and/or
field applied sealant lines for the watertight performance.
2. To prevent the interference between the facing panel and the perimeter
frame due to differential thermal movements.
3. To allow easy replacement of an individual facing panel.
4. To use the interior face of the assembled wall panel as the interior
finished wall surface.
5. To eliminate the accumulative thermal movement of the wall surface.

It will become obvious from the description of the preferred embodiments
that the objectives of this invention are accomplished by the design
features.
Brief Description of the drawings
The present invention uses rain screen principle. It pertains to method
of attaching wall panels to exterior wall surfaces.
The description of the drawing is as under-
1. Fig. 1 describes the horizontal section of the assembly and the system
lay out
2. Fig. 2 describes the vertical section of the system and its various
components
3. Fig. 3 describes the wall panel attachment system
4. Fig. 4shows the ALPL/P/211 profile typical drawing, dimension is in
mm
5. Fig. 5 shows the ALPL/P/212 profile typical drawing, dimension is in
mm
6. Fig. 6 shows the EPDM gasket, EPDM hanging gasket part is there to
avoid the vibration noises that are caused by wind loadings, road
traffic, etc
The hanging system for aluminum composite panel includes a plurality
of wall panels. The system strength is enhanced by the use of an
extruded perimeter frame design which carries the dead load for various
panels.

DETAILED DESCRIPTION OF THE DRAWING
A wall panel attachment system is provided herein. The wall panel
attachment system employs an extruded aluminum (or other metal)
attachment system for fastening a plurality of panels to a building
surface. The system's strength is enhanced by the use of an extruded
perimeter frame design which carries the dead load for the various
panels.
Fig 1 shows the horizontal view and Fig. 2 the vertical view of the hanging
wall panel system. Fig. 3 describes the wall attachment system. A wall
panel attachment system formed from individual framed panels and
supported on spaced apart vertical mullions, each said framed panel
comprising a facing panel forming the exterior surface and a perimeter
frame including four perimeter members, namely, a top horizontal
member, a bottom horizontal member, and two vertical side members,
said perimeter members having inner surfaces
The numerals 1, 2, 3, 4 and 5 are defined below in the diagrams-
1- Double T profile bracket
2- Aluminum profile ALPL/P/211
3- Aluminum profile ALPL/P/212
4- Tray made from composite panel
5- Concealed groove reinforcement

Fig 4 and Fig 5 defines the installation and drawings of the ALPL/P/211
and ALPL/P/212. Fig.6 shows the cross sectional view of EPDM hanging
gasket The system comprises of two profile say Profile 1 and Profile 2.
Profile 1 - ALPL/P/211. Profile is made from aluminum alloy 6063 T5
and is also called omega profile. This profile will be screwed to the double
T fixing (ALPL/P/210) so that they remain perfectly plum with the
adjustments that the system allows. These profile will be put vertically
and will bear the load of cladding material.
Profile 2 - ALPL/P/212. Profile is made from aluminum alloy 6063 T5
and is used for hanging the Aluminum Composite Panel. On this profile
Ethylene Propylene Diene Monomer (EPDM) gasket. This profile also
called external hanging part are fitted over the Profile 1 - ALPL/P/211.
These are height adjusted depending on where the hanging cleats are
situated on each tray. They can never be over the maximum distance of
500mm between each one. Diagram shows the typical installation and
drawing of profile. EPDM hanging gasket part is there to avoid the
vibration noises that are caused by wind loadings, road traffic, etc
The hanging rain screen system is a concealed fixing system which is
versatile and is quickly assembled where the tray modules can be both
horizontal and vertical. The Aludecor-HR system complies with all of

the requirements to carry out the most revolutionary architectonic
claddings.
All of the sub-structure is made with an aluminum 6063 T5 profile and
formed by double T fixings which have different lengths in order to
absorb any irregularities in the facade.
The separator is fixed to the vertical parameter using special mechanical
wedges which are recommended in each case by the fixing suppliers.
The external ref. are fixed to the omega mullions that have been cut
from an extruded aluminum alloy 6063 T5 profile. The hanging area is
protected by using a special part known as an EPDM hanging gasket in
order to avoid vibrations when resting against the Aluminum Composite
Panel trays
This sub-structure supports the Aluminum Composite Panels that have
been fabricated in such a way that they rest against the previously
mentioned hanging parts and are screwed at the top flange to the
omega shaped mullion profiles.

The tray hanging cleats will be strengthened using reinforcement part
that will be riveted to the tray's lateral flange on to the hanging cleats
and therefore shaping the tray corners.
Internally the trays are strengthened using intermediate stiffeners
which are composite panel parts that adhere to the internal tray face
and are riveted in the perpendicular flanges.
The following explains the assembly order of the hanging rain screen
system.
1. When fitting any type of ventilated facade, we must take in to
account its overhang. The first step is to fit the double T spacers
(ALPL/P/210). These must be perfectly aligned vertically. The type
of spacer to be used will depend on the facades' overhang.
2. The omega profile will be screwed to the double T fixings so that
they remain perfectly plum with the adjustments that the system
allows. The first and last fixing will be fitted at 250 mm from the
omega mullion profile end.
3. The external hanging parts or the internal parts are fitted over the
omega. These are height adjusted depending on where the hanging
cleats are situated on each tray. They can never be over the
maximum distance of 500 mm between each one.

4. The Aluminum Composite Panel. The last step will be to fit the
trays over the hanging pieces which are then screwed against the
omega mullion flaps in the elongated holes that are situated in the
top horizontal flange of the tray. The facade is to be executed in a
rising direction.
The Hanging rain screen aluminum composite wall panel attachment
system such as hereinbefore described with reference to the ongoing
drawing and description.

Claims
1. A Hanging rain screen aluminum composite wall panel attachment
system is provided comprising Profile 1 - ALPL/P/211 AND Profile
2 - ALPL/P/212 with all other components wherein the profile 1 is
screwed to double T fixing(ALPL/P/210) to make them perfectly
plum and profile 2 is used for hanging the panel and are height
adjusted
2. A Hanging rain screen aluminum composite wall panel attachment
system as claimed in claim 1 wherein the profile 1 is also called as
omega profile and profile 2 is also called as external hanging
3. A hanging rain screen aluminum composite panel system
comprises a primary support comprising
a. Plurality of spaced apart vertical support members secured
with respect to backing wall and adapted to support the load
of the cladding wall and transfer the same to said backing
wall and
b. Plurality of horizontal runners adapted to be supported on
said vertical support members to define vertically spaced
apart runners with the spacing there between the runners

based on the vertical dimension of the strip comprising said
external cladding wall
c. Groove between ACP panels will be left open and water will
wash out vertically wherein a EPDM gasket may be used to
make grove more tight
d. A rubber on Profile 2 is used which helps during vibration
e. A reinforcement must be used and tied up in ACP panel
which will act as holding the ACP on Profile 2.
4. The system as claimed in claim 3 wherein the proposed
technique for Aluminum Composite panel silicon usage in grove for
blockage is to be eliminated.
5. The method for hanging rain screen panel attachment system
as claimed in claim 1.
6. The hanging rain screen aluminum composite wall
attachment system substantially as here in described and
illustrated in the figure of ongoing drawing