Expanded Aluminium Foil Aluminium Filtafoil Test Results

Filtration Product
Specifications
We understand that filtration
product applications, performance
environments and critical factors
dictate construction materials and
methods required by our customers.
Given our experience of prototyping
and new product development
with customers to create filtration
solutions, we would urge you to
consider the following factors in
specifying your bespoke filtration
components:
1. Material Type
2. Critical performance factors
3. Mesh opening dimensions
required
4. Material thickness
5. Flattened or raised mesh
6. Quantity of sheets or coils
7. Additional processes and special
finishes required (e.g. cut to size,
pressed, welded, shaped, powder
coated, fabricated)
All sheet sizes are nominal, normally oversize. If exact sheared
sizes are required, this must be stated on the order. All dimensions
are in millimetres.
Aluminium Filtafoil Test Results
Test Results relating to Expamet’s Filtafoil Range of Panels
Grease Filtration
Expamet filters are widely used to extract grease in domestic and commercial kitchens.
Tests carried out confirm Filtafoil’s ability to remove up to 96% of grease from the
airstream. This is based on a 50mm Super Panel at 2m/s air velocity. A 25mm panel
will remove 94% contamination from the airstream. The test involved simulating typical
conditions above an active grill/fryer utilising 50g of cooking oil. The removal efficiency
was then calculated by weighing the quantity of oil used versus the percentage which
had passed beyond the filter to the thick cotton pad.
Mist Filtration
Tests at the University of Birmingham have shown that a water mist droplet removal
efficiency of 98-99% at air velocities of 2m/s through a 50mm corrugated Filtafoil pack
can be achieved. Super Panel and Stainless Steel are advised for the removal of mist.
Dust Filtration
Chart 1: Test Data: BS 6540 Part 1: Sec 3: Eurovent 4/5 Para 6
Pa Bar p (Resistance to Air Flow)
25
20
15
10
5
0
Dust Load g/m
Graph 2: Average Resistance to Airflow
2 600 1200
Pa Resistance p (Pressure Drop)
100
75
50
Filter Type Economy (E) Super (SP)
Thickness mm 25 50 25 50
Air Velocity m/s 2 2 2 2 2
Initial Resistance (Clean) Pa 37 39 54 78
Final Resistance Pa 287 289 304 328
Average Synthetic Dust (weight) Arrestance % 72 74 78 85
Fire Resistance Standards
Tests by the Department of the Environment Building Research Establishment Fire
Research Station show that Filtafoil would achieve Class 1 when tested to BS 476
Part 7: 1971.
Graph 1: Efficiency, Resistance and Dust Load using ASHRAE test dust at an
air velocity of 2m per second. Pressure drop across Expamet Filtafoil panels
50mm Panel 25mm Panel 12.5mm Panel
Thickness Thickness Thickness
Lighter Curves: Efficiency/Dust
Darker Curves: Pressure Drop/Dust
Efficiency 80%
50mm Panel 25mm Panel 12.5mm Panel
Thickness Thickness Thickness
25
Air Velocity m/s 1.00 2.00 3.00
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70%
60%
50%
Expanded Aluminium Foil
This highly efficient aluminium mesh has been proven to perform in a diverse range of applications.
The material is available as coils, cut to size sheets and even as bespoke manufactured components.
Amongst its uses, aluminium foil is layered into filter panels to capture dust and grease for both internal
and external air filtration.
The product is also transformed into explosion suppression safety foil, commonly used in fuel storage tanks for
petrol and even for aviation fuel at airports and helicopter landing pads. Extensive testing by the MOD has
revealed that storage tanks, filled with both fuel and aluminium foil, are able to withstand bullet and shrapnel
penetration, as well as direct combustion without actually exploding. A further advantage is minimum
displacement of only 0.95% of volume filled.
Aluminium expanded foil can be compressed into various bespoke shapes, developed by our customers to be
used as effective oil filters and automotive air filters. It is also used as an integral part of heatshields in automotive
vehicle power trains.
www.rhpcreative.com
–
THE EXPANDED METAL COMPANY
Poker Hot
PO Box 14, Longhill Industrial Estate (North),
Red by
Hartlepool, TS25 1PR, United Kingdom
Tel: +44 (0)1429 867388 · Fax: +44 (0)1429 866795
produced
E-mail: sales@expamet.co.uk
and
The company policy is one of continuous development. We reserve the right to alter specifications, etc. without notice. Customers
are advised to check availability of material. An Expamet International Company ©The Expanded Metal Company Limited Designed
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Expanded Metal for Filtration
As a valued supplier to major industry filter manufacturers and distributors with over 110 years
of experience, The Expanded Metal Company has earned a reputation for quality products
and expert advice, built on total customer focus.
Our highly skilled staff are able to offer a wide range of flexible service options coupled with
unrivalled lead times. We specialise in made to order solutions, having the production capability
to manufacture a wide range of filters in varied sizes and materials, utilising a number of different
construction methods.
Made to Order Expertise
As the UK Market Leader in Expanded Metal production, we offer an
unrivalled range of meshes combined with cost effective manufacturing
expertise.
Customer satisfaction is the key to our success. A major part of our business is our
made to order service. Our production capability and experience allow us to offer
bespoke solutions to your filtration problems.
We can always use our experience to interpret your filtration problems and offer
a bespoke product as a solution.
Fine Mesh for Filtration
Our unrivalled range of fine expanded meshes are ideal for multi-purpose
filtration. Cost savings can be achieved when switching from perforated
or woven materials to expanded metal guazes. Finer meshes are available
as coil form, sheet or cut to size pieces.
Versatile and adaptable, expanded meshes can also be pressed, formed,
shaped and welded in-house into components for straining, retention and
filtration, utilised across a wide range of industries.
Below are examples of some of the meshes available. For more
comprehensive details and more products, please call us to discuss your
requirements, request a brochure or view our products online at
www.expandedmetalcompany.co.uk
Stainless Steel Meshes
Strand % Open Standard
Ref No. LWD SWD Width Thickness Kgm2 Area Stock Size Manufactured Size
941MM 1.00 0.67 0.20 0.15 0.8 38 212 x coil
942MM 1.50 0.92 0.31 0.15 0.87 33 313 x coil
957MM 1.50 0.92 0.22 0.15 0.62 52 313 x coil
926S 3.18 1.95 0.79 0.46 2.95 19 610 x 1070
Copper and Brass Meshes
Copper Brass Strand Copper Brass % Open Standard
Ref No. Ref No. LWD SWD Width Thickness Kgm2 Kgm2 Area Manufactured Size
949MM 945mm 1.00 0.67 0.20 0.15 0.83 0.79 40 200 x coil
950MM 946mm 1.50 0.92 0.31 0.15 0.90 33 33 200 x coil
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Formed Filtration Components
A clear focus on meeting customer needs has led to extensive
experience of prototyping and new product development for
formed expanded metal filtration components. We thrive on
assisting our customers to utilise expanded meshes to solve
filtration problems, helping to reduce costs and increase
efficiency.
In-house tooling capabilities give us a leading edge in assisting
customers to develop new filtration products. We manufacture
a range of formed filtration components, from vent ridge tiles for
roof ventilation to small bullet filters for domestic heating systems.
We specialise in high volume pressings for filter retention panels
and casings and can also accommodate specialist batch work.
Given the competitive advantages of cost savings,
technical expertise and strength, meshes can be
shaped into filtration products that meet exacting
customer specifications and performance criteria.
The most common filtration products
that we produce are cylindrical tubes,
conicals, casings, filter housings,
strainers and pressed panels.
Expanded Metal Support Mesh
Expanded metal support mesh (pictured
below left) can be manufactured to
bespoke specifications to provide filter
manufacturers with the perfect solution
for adding cost effective reinforcement
to a multitude of filtration applications,
providing strength and flexibility.
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Filter Panels
As standard, we currently offer made to order products
with frames and backing meshes constructed in
stainless steel, aluminium, galvanised steel and tinplate,
in thicknesses ranging from 7mm to 50mm.
Expamet filtafoil, bondina, galvanised and stainless steel
mesh are widely used as infill options. We can also
utilise any infill material you may require.
Construction
Expamet filtafoil panels
are constructed from multiple
layers of expanded aluminium
foil mesh, arranged alternately at
right angles to each other. This structure
ensures a robust, high performance filter
with low resistance to airflow.
Each layer of foil has jointless continuity, which
prevents the hazard of loose fibres and ensures strength
and efficiency.
Features and Benefits
Bespoke Solutions Available
Low Initial and Lifetime Cost
Washable and Reuseable
Proven Performance
Low Resistance to Airflow
High Efficiency
Robust Construction
Filtafoil Adhesive
can greatly enhance the performance of your filter.
Tests show that the dust arresting capacity and
efficiency of your filter are increased, prolonging
its lifespan and further protecting your environment.
Caring for your Filter
Cleaning in accordance with our recommendations
will reduce the total lifetime cost of your filter. Using
mild detergent, the Super Panel will remain robust and
effective after many washes and Economy Panels after
several washes. Stainless steel and galvanised panels
must be steam cleaned.
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Filter Panel
Specifications
Made to Order
Your filter panels can be made from any
combination of the following materials:
Support Mesh – Stainless Steel,
Galvanised Steel, Aluminium, Tinplate
Frames – Stainless Steel,
Galvanised Steel, Aluminium, Tinplate
Infill – Aluminium Filtafoil, Bondina
(plus any other material you require)
Thicknesses – 7mm, 9.5mm, 12.5mm,
25mm, 50mm (nominal sizes)
Handles and drainage holes optional.
Please provide actual sizes when ordering.
Expamet Aluminium Super Panels
Nominal Sizes (in mm)
Thickness Size
50 SP 610 x 610
50 SP 508 x 508
50 SP 457 x 457
25 SP 508 x 508
25 SP 457 x 457
Actual Sizes (in mm)
Thickness Size
47.6 SP 603 x 603
47.6 SP 502 x 502
47.6 SP 451 x 451
22.2 SP 502 x 502
22.2 SP 451 x 451
Expamet Tinplate Economy Panels
Nominal Sizes (in mm)
Thickness Size
50 E 610 x 610
50 E 508 x 508
50 E 457 x 457
25 E 508 x 508
25 E 457 x 457
Actual Sizes (in mm)
Thickness Size
47.6 E 603 x 603
47.6 E 502 x 502
47.6 E 451 x 451
22.2 E 502 x 502
22.2 E 451 x 451
Standard Specifications
Handles optional on all filters
Expamet Aluminium Super Panels
25 SP Thick – Infill: 2 layers 451A
and 4 layers 450A (Filtafoil),
2 aluminium support meshes.
50 SP Thick – Infill: 7 layers 451A
and 4 layers 450A (Filtafoil),
2 aluminium support meshes.
Expamet Aluminium Economy Panels
25 E Thick – Infill: 2 layers 451A
and 3 layers 450A (Filtafoil),
2 aluminium support meshes.
50 E Thick – Infill: 7 layers 451A,
2 aluminium support meshes.
Other Standard Filters
12.5 Thick – Infill: 5 layers 450A (Filtafoil),
2 aluminium support meshes.
12.5 Thick Aluminium Bondina Filter
– Infill: 1 layer Bondina Ref P15/150,
2 aluminium support meshes.
9.5 SP Thick Aluminium Panels – Infill: 4 layers
Ref 450A (Filtafoil), 2 aluminium support meshes.
7 SP Thick – Infill: 3 layers Ref 450A (Filtafoil)
or 1 layer Bondina Ref P15/150, 2 aluminium
support meshes.