PUF INSULATED PANELS

PUF Wall Panels

best sandwich panel price in india

PUF Panels

BNAL Manufactures a range of high performance PUF insulated roof & wall panel systems that provide accelerated speed of construction. 

These panels are engineered to perform in extreme temperatures, enabled to withstand temperature range from -180°C to +110°C. They come with comprehensive guarantees covering thermal,  fire, structural and coating performance.

The panels are ideal for industrial, distribution, commercial, leisure, healthcare, education, business and technology parks and retail buildings.

Features

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Interior metal skin vapour barrier

FIREsafe/ FIBERfree
high performance insulation

Superior airtightness Guaranteed

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Single-component, single-fix system promotes accelerated build speed

Exterior metal skin weather barrier

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Weather-tight and air-tight with exceptional lifetime resilience

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Thermally efficient (Buildings are cooler in summer and warmer in winters)

PUF Panels

Internal linear (Pre-coated for a clean internal finish)

PUF Panels

Customised, light weight and easy to install

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Strong, durable and eco-friendly

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Dust-free Environment

PUF Panel Properties

CHARACTERISTICSVALUE
Density40+2kg/m3
Compressive Strength2.1 kb/cm2 at 10% deformation
Tensile Strength3.7 kg/cm2
Bending Strength4.0kg/cm2
Adhesion Strength2.9 kg/cm2 Foam to Steel
Dimensional Stability48 hrs (-25° C-0.1%) (-38°C & 90% RH-0.1%) (-100°C-0.4%)
Closed Cell Content90-95%
Temperature Range-180°C to +110°C
Thermal Conductivity at 10°C3.7 kg/cm2
Bending Strength4.0kg/cm2
Fire PropertySelf extinguishing
Water Vapour Permeability0.08-0.12 gms/hrm2 (at 90% RH & 38°C)

Technical Specifications

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Continuous Line Panel Production

As the name suggests the Continuous Line Panel Production process involves all operations starting from forming sheet metal profiles required for both faces, panel to panel joining profile detail, Foaming, Panel Forming, Curing and final cutting of product to length in one continuous process.

Step 1: Cold Forming

At the start of the production process two number de coilers are loaded with Steel Coils of the required color and thickness. These Steel coils are then fed into two separate Roll formers for the forming of the sheet metal profiles and the panel joining profile. After the roll forming the two steel facings pass through the heating chambers and then move to the molding area.

Step 2: Panel Foaming

Next the Polyurethane Chemicals in liquid form are sprayed on to the lower steel sheet. Where needed, the inner surface of steel sheet is given a ‘CORONA’ treatment to improve the bonding strength.

Step 3: Curing

The chemical system is delivered into the cavity by an oscillating/fixed manifold on which delivery nozzles are mounted at equal spacing. The chemical system starts reacting after the ‘cream time’ is reached. The foam then starts to rise, till the ‘rise time’ is completed. The top surface of the foam starts to adhere to the bottom surface of the top sheet after the ‘tack-free’ time is attained. All these reactions proceed even as the whole ‘mould’ is moving along.

Step 4: Final Cutting

The Pressure platten conveyors over the two sheets along with the side belts are long enough to keep the “Sandwich “ in closed state for a sufficiently long duration so that the finished panel is fully cured in all respects before it emerges from the double belt area of the line. After this the panel is cut to the required size on the band saw cutting machine.

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Discontinuous Panel Production process

As the name suggests in this production process the panel is manufactured by different processes being carried out on different machines to get the final product.The major equipment used for this process are the Foaming Machine and the Panel Press which features a vertical hydraulic ram of the length and width of the panel to be manufactured.Profiling of the Metallic/FRP/Cement Board facing is done as an 'off line' processes and brought to and stacked on either end of the panel press. Then the mould is created as follows:

Step 1

The base on which the bottom facing is placed is a precisely machined flat Platten equipped with a built in heating system. Sides of the mould are made of machined Aluminum extrusions (jigs), profiled to the male and female joint features desired. These jigs are specific to each thickness of panel being produced. Jigs also feature accurately positioned fixtures to mount Camlocks which get embedded in to the foam later.

Step 2

When the pre-profiled top and bottom facing sheets are placed in this mould with special spacers, a hollow space is created and is now ready for chemical injection.This complete pre-assembly is moved laterally into the press by a positioning actuator. A heavy ram, which is a precision machined guided block, closes the mould tightly and holds the ‘mould’ firmly. The temperature controlled heated plattens keep the mould at the optimum reaction temperature.

Step 3

Through many nozzles provided on the sides of the ‘mould’, PU chemicals mix is injected to precise volume as per settings in the microprocessor controlled delivery head. The liquid mix finds its level well before the ‘cream time’ of the chemicals is reached.

Step 4

The foaming reaction starts and the foam rise gradually to fill the nooks and corners of the mould. The rising of the foam is complete well before the ‘tack-free’ time, when the adhesion to the sheets starts- i.e., well after the foam has filled the ‘mould’.

Step 5

The assembly is held in position, in the preheated mould till after the mould release time has elapsed. Then the panel is ejected out of the press. ​

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    Auditorium for the Rezangla War Memorial

    Constructed the Auditorium for the Rezangala War memorial using LGSF Technology at an height of more than 15500 foot above sea level. This was executed by BNAL within a record time of 1 month and was greatly appreciated by all concerned. The memorial has been made to commemorate the supreme sacrifice made by 114 Brave Hearts of the Indian Army and was dedicated to the nation by the Hon’ble Defence Minister of India Shri Rajnath Singh on 18th November 2021.

    Aircraft Hangar  

    Recently completed Aircraft Hangar with motorised gates and double storey annexes on both sides.
    The hangar was completed from start to finish within 5 months making it possibly the fastest
    construction for an Aircraft Hangar in India.

    LGSF House at Kasauli

    Double Storey Three Bedroom Prefabricated Cottage
    using the latest state of the art LGSF technology.

    Sports Stadium in 7 schools in Chandigarh

    Executed PEB works for 7 nos. of Indoor Sports stadiums at various Government Schools in Chandigarh.
    The Buildings have a clear span of 62 Meters and total area executed is 2,70,000 sq. ft.

    NTPC Project at Hazaribagh

    BNAL has executed complete turnkey project for NTPC at Hazaribagh. The scope of work included design, Manufacture, Supply and Erection of Single and Multi-Storey Prefabricated Structures including all Civil, Electrical, Sanitary and Plumbing Works. Total Area Executed – 65000 sq. ft. appx.

    Values

    Quality:
    We are committed to delivering products and services of the highest quality that meet or exceed customer expectations.

    Innovation:
    We are constantly seeking new and innovative ways to improve our products, processes, and services to better serve our customers and stay ahead of the competition.

    Ethics:
    We operate with integrity, honesty, and transparency in all our dealings with customers, suppliers, employees, and other stakeholders.

    Cost-effectiveness:
    We are committed to providing cost-effective solutions without compromising on quality or timelines.

    Customer Focus:
    We are dedicated to understanding and meeting the needs of our customers and building long-term relationships based on trust, reliability, and value.

    Customer Focus:
    We are dedicated to understanding and meeting the needs of our customers and building long-term relationships based on trust, reliability, and value.

    Sustainability:
    We are committed to reducing our environmental impact and promoting sustainable practices throughout our operations and supply chain.

    Safety:
    We prioritize the safety and well-being of our employees, customers, and communities in all aspects of our business.

    Industry Leading Technology:
    We are committed to employing technology in construction that ensures zero impact on the ozone layer and does not contribute to its depletion

    Commitment:
    We focus on solution delivery with complete adherence to service quality standards and zero deviation from committed timelines