Alfa Cooling Puf Roof Panels

"World's Best Manufacturing Process with continuous Production line for Sandwich PUF/PIR Panels."

Metal-faced polyurethane sandwich panels are the system of choice of today for large industrial buildings refrigerated warehouses,office blocks,exhibition halls,fair pavilions,schools and sports halls.

The aluminium or steel facings themselves are surface coated and can be manufactured with profiles of various depths leading to a higher load bearing.

Polyurethane sandwich panels come complete with specially formed tongue-and -groove joints ensuring a perfect fit and maximum integrity,Assembly is fast,easy and cost effective.

The resultant sandwich panel has a load-bearing capability many times greater than the achieved by adding together the load-bearing capacities of the individual layers.As a result these thin,relatively lightweight sandwich panels can safely bridge wide spans. For Example,a panel just 100mm thick can easily bridge a clear span of some meters.

Manufacturing Process The top and bottom coil (sheet metal) are clamped onto the plants unwinding unit and fed into the machine. In the first step, “corona system” cleans both reverse sides of the sheet metal using high frequency to remove greases and dirt and to guarantee the best possible subsequent full spread adhesion between foam and sheet metal. Thereafter the protective films are rolled onto outside of both metal sheets. The sheets are then brought together, the bottom sheet is foamed by the swinging foam head and the top sheet is mechanically steadied. Immediately thereafter, the panel is fed continuous line into the heated drying tunnel where the foam expands to its full volume, binds to the sheets and transforms both sheets to one robust, shear resistant composite structural panel. After leaving the tunnel the panels are cut according to your specification using flying saw/cutter. Specification Panel thickness available 30mm, 40mm, 50mm, 60mm, 80mm, 100mm, 120mm Panel width available 1060mm Panel length available 2000mm-12000mm Average density 40± 2kg/m Thermal conductivity 0.024-0.03 W/m Temperature range -40+800C Free from CFC CFC free Type of foam B1, B2, B3, PIR Heat transfer co-efficient -0.022W/M2*k Pressure 0.10Mpa Cubic Area Change =1%(-30 C – 100 C/96h) Panel Sheets specifications Polyester primer 5 micron Non-toxic food-graded STANDARD polyester finish paint. RAL 9010 color : 20 micron Back coat 5 micron Resistance to saline mist 5 micron 500h (ECCA TB) 100 h (ASTM D 2247) Effective width and length: Wall Roof Width 1000 mm 1000 mm Length Upto 12000 mm 12000 mm Advantages Tongue and groove type joinery system.

Hidden self tapping screws for aesthetic appeal.

Great energy saver

Fast and easy installation

Light weight

Space saving

Various designs.vivid colours.

Energy conservation as per ECBC code.

Easy Applications

Cost Savings Alfa sandwich panels have the following advantages over single skin/double skin field insulated panels. High load bearing capacity at low weight.

Excellent and durable thermal insulation.

capacity for rapid erection without lifting equipments.Easier installation in hostile weather conditions.

Easy repair and replacement in case of damage.

Long life and very low maintenance cost

Good sound insulation

Reasonable fire reaction and resistance Application Area Industrial Buildings Roof

Walls

Partitions-Semi Glazed False Ceiling

Walk-on False Ceiling Commercial Buildings facades/Elevation

Side wall panelling

Partitions-Semi Glazed Warehouse/Godown Roof

Walls

Partitions Cold storage/Blast Freezers insulated Ceiling

insulated Walls Farm House Decorative siding panels Pharmaceutical Manufacturing units clean Rooms

Walk-on False Ceiling

Return-Air Boxing Air Handling Units Insulated panels.

Poultry Form Ceiling



Walls

Dairy industry Ceiling



Walls

Malls/Departmental Stores Facades



Partition



Walls

Energy efficiency

with 80 mm thick sandwich panels with polyurethane rigid foam, the U value is 0.297 W/(m K).In comparison, asolid wall with 24 cm thick masonry and 2 cm plaster walls has a U value of 1.85 W/(m K).

Rigid polyurethane foam combines excellent thermal insulation properties with good mechanical strength,making it an outstanding construction material that does not rot,mold-resistant,odorless and non-toxic for all conceivable applications,The foam is resistant to the chemicals typically used in construction and is compatible with most solvent-containing adhesives,paints and wood preservatives.

polyurethane rigid foam is extremely durable and can be installed easily and securely,ensuring cost-effective,efficient construction.

Panel – 0.5/0.4 mm Thk. - 550Mpa Details Section Properties Puff (0.5/0.4) steel panel 550 Mpa puff thick (mm) Weight kg/m2 Area cm2 Ix& cm4 ZX-Top cm3 ZX-Bottom cm3 Ma (top) Kn.m Ma (bottom) Kn.m 30.00 8.38 10.67 51.13 11.19 21.48 4.061 7.798 40.00 8.42 10.72 73.52 14.76 24.75 5.359 8.986 50.00 8.50 10.83 101.10 18.76 28.40 6.809 10.309 fy= 55 Kn/cm2 E= 2.00E+08 KN/M2 Load Carrying Chart (550Mpa) Panel designation Number of spans Span In Meters 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 0.5/0.4/30mm i D+L 9.29 5.75 3.90 2.70 2.00 1.50 1.15 0.90 WP 9.35 5.95 3.95 2.84 2.10 1.60 1.25 1.00 ii D+L 22.42 14.05 9.35 6.60 4.83 3.60 2.79 2.10 WP 22.50 14.20 9.50 6.70 4.93 3.70 2.89 2.25 0.5/0.4/40mm i D+L 13.38 8.10 5.60 3.95 2.88 2.09 1.66 1.30 WP 13.45 8.50 5.70 3.95 2.98 2.26 1.76 1.40 ii D+L 31.93 20.29 13.59 9.54 6.95 5.22 4.00 3.14 WP 32.25 20.39 13.65 9.60 7.00 5.31 4.00 3.25 0.5/0.4/50mm i D+L 18.35 11.55 7.75 5.44 3.96 2.95 2.29 1.69 WP 18.49 11.68 7.85 5.54 4.00 2.99 2.39 1.89 ii D+L 36.61 26.91 18.69 13.09 9.55 7.10 5.53 4.34 WP 44.00 28.00 18.79 13.20 9.60 7.26 5.63 4.44