Pre Engineered Building Components

Continuous Sandwich Panel-Redefining Construction

Satmax sandwich panels are typically single piece, factory made units which consist of an insulating layer of rigid Polyurethane Foam or Rockwool between two layers of mark sheets.These panels have unique tonque and grove joinery for air and water tight, effective panel to panel interlocking make it easier and quicker to install and providing an effective seal. All joints are covered with flashings and sealants. steel structure framing are provided where every necessary as per user customised design.

Why Insulated Sandwich Panel ?

  • High Thermal Insulation
  • Usable as structure panel for wall & roof.
  • Closed Cellular Structure-inherently water resistant.
  • Available in any lengths depending upon logistic convenience.
  • External and internal steel facing best effective vapour barrier.
  • All weather proof and sustainable.
  • Self extinguishing-avoid spread of flames in case of fire.
  • Resistance to Corrosion, termite and fungus.
  • CFC free and zero ozone depletion property.

Product Range

Wall Panel Thickness(mm)
Roof Panel Thickness(mm)

Material Specification

Characteristic Availability
Insulation Thickness 30mm to 150mm
Insulation Type PUF, PIR, Rockwool
Panel Type Tongue & Groove, Cam Lock
Outer Skin PPGI, AL, SS, FRP, GI, PPGL
Inner Skin PPGI, AL, SS, FRP, GI, PPGL
Sheet Thickness 0.3mm to 2mm
Skin Type Plain, Ribbed, Corrugated
Colour Customised

Basic Properties Of Insulation Cores

Material Description Characteristics
PUR Rigid Polyurethane Foam Most popular, widely used, ideal insulator. It is thermosetting material when exposed to fire, does not drip or melt; forms a strong carbonaceous char that protects the core and prevents spread of flame. Additions of FR agents further augment fire retardant properties. It is CFC free & self extinguishing. Conforms to IS-12436-88.
PIR Polyisocyanurate Foam Offers higher fire rating and is non-ignitable. Better closed cell structure offered by trimerisation process offers better thermal performance. It is CFC Free, longer lasting, hygienic and food safe. Ideal for Cold Rooms.
ROCKWOOL Rockwool Naturally occurring fibre with very high temperature resistance properties. It is fireproof, emits no smoke or gases, is water repellant & Non-capillary. The process re-orientation of vertical fibre structure imparts high Shear, Compressive and Tensile strength, thus making the Panels strong and stable. Rock wool with excellent acoustic properties is chemically neutral, vermin proof, re-cyclable and bio degradable. Ideal for Partitions, Internal walls, Acoustic Insulation, and FR & HT applications for Power Plants etc. Conforms to IS-8183.

K Values Of Different Insulation Material

Material Thermal Conductivity W/m.k Density KG/M3
Polyurethane 0.020 32
Polystyrene/Thermocole 0.037 30
Glass Wool 0.041 65~160
Polyethylene 0.0348 32~38

PU Panel Properties

Characteristics Value
Temperature Range -40oto +80oC
Density 40 +/- 2 kg/m3
Compressive Strength 110 – 210 kPa
Adhesion Strength 110 -210 kPa
Tensile Strength 370 kPa
Water Absorption 0.2% Max. At R.H98%
Water Vapour Permeability 5.5ng/pasm
Thermal Conductivity Less than equal to 0.02 W/m.K at 23oC
Fire Property Self Extinguishing*
Dimensional Stability 0.1% at -30oC
Closed cell Content >95%
Shear with Metal Sheet 160 kPa

Rockwool Properties

Characteristics Value
Bulk Density 100+/-10% Kg/m3
Moisture Content 2.0 Max %
Moisture Absorption 2.0 Max %
Water Absorption 0.5 Kg/m2
Incombustibility (%) Loss 3.0 Max %
Service Temperature 7500C
Alkalinity (PH) 7 – 10
Shot Contents
Over 250 Microns 15.0 Max %
Over 300 Microns 5.0 Max %
Chloride Content 0.0020 Max %
Recovery after Compression Min 90 %
Sulphur Content Min 90 %
Resistance to Vibration Settlement 1.0 Max %
Jolting Settlement 3.0 Max %

Comparison Of Processes

Variables Particulars Continuous Process Dis-Continuous Process
1 Production Process a) Foaming Automatic Continuous Manual Batch
2 Volumes
a) Quality Consistency
b) Cell Structure
c) Foaming
d) Pouring
e) Moisture ingress
High Capacity
Not Possible
Low Capacity
Not Assured
Not Fully Closed
Non- Uniform
3 Chemical System On-Line Blending Pre- Blended
4 Customization Not Possible Possible
5 Restriction On Lengths No Restriction Restricted
6 PIR Possible Not- Possible