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Pass Through Chambers

 

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

 

Sandwich PUF Roof / Wall 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.

  1. Manufacturing Process
  2. Specification
  3. Advantages
  4. Application Area

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.

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:

 WallRoof
Width1000 mm1000 mm
LengthUpto 12000 mm 12000 mm

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./p>

Energy conservation as per ECBC code.

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

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

  1. Sandwich PUF Panel
  2. Manufacturing Process
  3. Specification
  4. Advantages
  5. Application Area

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.

Thermal performance and strength

At 25C mean temperature thermal conductivity of varies between 0.031 W/mK and 0.036W depending upon the density of the material.

Acoustic Performance

Alfa panels offers excellent sound absorption.The Noise Reduction Cofficient (NRC) range is from 0.80 to 0.95

File Performance

Alfa panels does not contribute in any way to spreading of fire.It does not Shrink,stretch or deform when exposed to fire.It does not cause smoke or any burning droplets in case of fire.It significantly contributes to improved fire safety.

Resistance to moisture

Storage

To Store for long duration,Alfa panels should be stored indoor.If stored outside,the panels should be0stacked clear of ground and covered with a securely anchored weather proof sheet.the panels should not be left exposed to weather.

Non Toxic

Alfa panels are not hazardous to health and do not contain asbestos.

Environmental impact

Alfa panels are free from CFCs,HFCs and HCFs and contain phenol resins within the permissible limits.

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./p>

Energy conservation as per ECBC code.

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

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).

THERMAL CONDUCTIVITY*
EXPANDED CLAY
 
 
0.100
STRAW
 
 
0.090
WOOD WOOL
 
 
0.060
COCONUT FIBER
 
 
0.050
CORK SHEET
 
 
0.045
MINERAL WOOL
 
 
0.040
POLYSTYRENE
 
 
0.035
POLYURETHANE
 
 
0.024
* IN WATTS PER METER AND KELVIN(W/mK).THE LOWER THE VALUE THE BETTER THE INSULATION
35mm PUF is equal to
 
 
35 mm EPS(Thermocol)
 
 
55 mm Glass Wool
 
 
60 mm Mineral Wool
 
 
80 mm Fiber board
 
 
175 mm Wood
 
 
475 mm concrete
1075 mm Thick Brick Work
 

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.

Sandwich Wall panel Concelead Fastening System

Sandwich PUF panel with a concealed-fixing method for high quality industrial and commercial buildings, where good aesthetics are paramount. The special double labyrinth joint of this panel, provides mechanical resistance and insulation superior to any other wall panel product of this kind, the panel external micro-V increases the aesthetic appeal of this panel, which can be orientated both vertically and horizontally as required.

If wind pressure on a wall sandwich panel is more than allowed limit of panels so it is needed to fix the sandwich panels with self-drilling screws on a metal net. On the ordinary panels these screws are visible but hidden screw wall panel are designed so that the drilling screw are operated under the notch and tab and cause tight and firm connection. Alfa hidden screw wall panels can be manufactured with various patterns and designed like fine, corrugated coarse corrugated. Beside the designs Alfa is presenting the hidden screw wall panel with water fall design to the market that has great insulator and firmness and can be assembled horizontally and vertically as well.

Eco Panels / Aluminium Foil Faced

The internal side of the insulated panel has a surface finish manufactured from aluminum foil of thickness 0.07mm.

Sandwich EPS (Expanded polystyrene foam) panels

Polystyrene Sandwich Panel also called EPS Sandwich Panel. The top & bottom surface of this panel is Galvanized & pre-painted steel sheets, core meterial is Polystyrene, it is formed by laminating and pressing with 2 components PU glue. The sandwich panel is featured with temperature keeping, hot & sound insulation, anti water and fire resistent. It is widely used as the wall or roof for cold storage, industrial workshop, public building etc.

Alfaa Panels System Comprise of Pre-Fabricated Composite sandwich panels with high density EPS Converted to Lamellar as core and profiled/ plain,colour coated galvanized steel / Galvalume Steel sheet facing on both sides, complete with joints sealants and fixing ancillaries.

Application: Panels System provides an one step solution in the form of insulated Walls and Roofing for easy and quicker construction of Various Roof and Wall of Factory Building,Storages,Exhibition Halls,Clean Rooms andFall Ceiling Purposes.

EPS Insulation Provided Light weight,Heat insulation,Water resistant with EPS of density 12-16 kg/m3

Colour coated Sheet requirement fdor Eps panel will be 0.45-o.6mm.

Panels are available in Various length (upto 8 mtrs) and Standard effective width of 980-1000 mm and thickness 50-100mm

The panels are finished with tongue & groove jointing arrangement

Panels For Both Wall & Roof Available.

*Main Technical Parameters

(suppose surface thickness is 0.5mm for both,EPS Density is 16Kg/m3)