What is the disadvantage of a PU sandwich panel?

Knowing the advantages and disadvantages of Sandwich Panels are important before the construction of roofs and walls. But what are sandwich panels made of? - What are their applications? What is their cost?

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In this article we are going to answer these questions.

 

Sandwich panel construction has many advantages for the buildings &#; and some disadvantage, too. But first what is a sandwich panel?

 

What is a sandwich panel?

What is meant by sandwich panel? Sandwich panels &#; or sometimes referred to as composite panels - are a type of industrial building material that are divided into 2 categories: Wall and roof covering.

A sandwich panel is a construction material that is consisted of 3 or 4 layers. Each panel contains a thermal insulation material as a core that is surrounded by covering sheets. (Or other materials we will discuss about in a minute).

 

 

Sandwich panels for roofs:

Roof sandwich panels materials, in addition to resistance to fire and heat; must have bearing capacity and long life expectancy- so that they can withstand strong storms.

 

  

Advantages and disadvantages of roof Sandwich Panels

Although there are many advantages to it, yet a few downsides might be annoying to some people:

 

Advantages:

Here are some of the sandwich panel&#;s advantages and features: (they may vary according to their foam materials)

·     Cost-effective

·     Easy to install

·     Non-water absorbent

·     Resistant to high heat and cold

·     Eco-friendly

·     Customized thickness of the foams

·     Lightweight

·     For clean room use

 

Advantages:

Here we are talking about the conventional sandwich panels (PU, XPS, EPS, etc.):

·     Not so strong to withstand the extra load

·     Not flexible to cover many angles (problem is solved by UPVC eco-panels which can bend as much as needed - we will get to it in a minute.)

·     In some versions the cost might be a bit higher than other alternatives.

 

Sandwich panel wall and roof price

The price of wall and roof sandwich panels depends on some factors:

·     The design of the roofs and walls (the angels and its complexity).

·     The thickness of the foam insulator

·     Types of the foam insulator &#; based on the location and usage

·     Number of the layers used in sandwich panels

Sandwich panels for walls:

In choosing a wall sandwich panel, key parameters such as: heat insulation, resistance to fire and water absorption are important.

Advantages of wall Sandwich Panels

As wall coatings, they are used in:

·     Internal partitions

·     Industrial shed wall coverings - (warehouses)

·     Containers

·     Villa houses

·     Sports halls

·     Livestock shelters

·     &#;.

 

Advantages of Sandwich wall panel

·     Light weight

·     easy transportation

·     Fast and easy installation

·     Soundproof ability

·     Resistant to moisture

·     Resistant to earthquakes

·     Different colors

·     Rust resistant

·     Resistant to fungus and mold

·     Washable

·     Long life

·     Recyclable

·     Lower cost

·     Heat resistant

 

 

Sandwich panels applications:

Sandwich panels are used in many industries such as:

·     Industrial and commercial factories

·     Cold storages

·     Industrial sheds and warehouses

·     Livestock and poultry sheds

·     Food and agricultural industry

 

Types of sandwich panels:

There are different types of sandwich panels. But here we will talk a bit on the most common ones.

The various types of sandwich panels are named after the foam inside their main coverings such as:

 

·     PU or PUR (Polyurethane)

·     XPS (Extruded Polystyrene)

·     EPS (Expanded Polystyrene)

·     Rock wool

·     Eco-Panel / UPVC Sandwich panel (Elastomeric Foam)

 

 

1.  PUR sandwich panel

Advantages and disadvantages of Sandwich Panels

 

Polyurethane (PU or PUR) is a composite material used as a thermal insulation. In this foam, most of the pores are closed and are located between 2 side skins.

 

Advantages and disadvantages of PUR sandwich panels

Advantages:

·     High density

·     The amount of adhesion of the insulation to the outer sheets is higher than other foams. (Good self-adhesive performance).

·     Lightweight

·     Good heat insulation

 

Disadvantages:

·     Production of greenhouse gases and damage to the environment.

·     Irritates the breathing and harmful to health.

·     Poor water absorption

·     higher price

 

 

What is the main difference between PIR and PUR?

The main difference between PIR (Polyisocyanurate) and PUR is their resistance to fire. PIR has a higher thermal stability. It also slows the spread of flames and reduces the amount of fire &#; compared to PUR.

 

2.  XPS Sandwich Panel

Extruded polystyrene insulation foam is made through extrusion process - that results in a closed-cell structure and a smooth and dense skin on both sides.

Advantages and disadvantages of Sandwich Panels

 

Advantages and disadvantages of XPS sandwich panels

Advantages:

·     Prevents water penetration

·     High strength

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·     Durable

·     Recyclable

·     Resistant to fungal infectious

·     Lightweight

Disadvantages:

·     UV sensitivity

·     Poor sound insulation

·     more expensive

 

3.  EPS Insulated Sandwich Panel

Expanded Polystyrene is a rigid, closed cell, thermoplastic foam material. It is produced from polystyrene and natural gases.

Advantages and disadvantages of Sandwich Panels

 

Advantages and disadvantages of EPS sandwich panels

·     Light weight

·     Low cost (more economical than XPS)

·     Dimensional stability

·     Versatility

·     Production with different density

 

Eps sandwich panels disadvantages

·     Low bearing capacity

·     higher chance of combustion

·     Not eco-friendly &#; not easily recycled

·     Poor insulator

·     poor strength and prone to crack

 

4.  Rock Wool

Rock wool is also called mineral wool or stone wool. It is used as an insulation foam and is made of rocks and minerals - basalt and natural ores. This foam is glued between 2 or 3 layers and used in wall and roof coatings.

Advantages and disadvantages of Sandwich Panels

 

Advantages and disadvantages of rock wool sandwich panels

Advantages of rock wool insulation:

·     Good sound absorption

·     Good heat insulation

·     Excellent fire resistance

 

Disadvantages of rock wool sandwich panels:

·     It is not completely waterproof

·     Rock wool is heavier than polyurethane. So it requires more endeavor and expertise for transportation and installation of the sandwich panels.

5.  UPVC Sandwich Panel (Eco - Panels)

UPVC insulated panels or eco-panels are the new generation to modify roof and wall coverings. Eco-panels are the economical version of conventional wall & roofing systems.

Eco-panels can be used in different places &#; according to their thickness.

These sandwich panels are available both for roofs and walls.

UPVC Eco-panel materials consist of 4 layers:

 

·     Anti-UV polymer alloy

·     UPVC layer

·     Elastomeric insulation foam

·     Polymeric laminated aluminum foil

 

Anti-rust screws are another advantages for UPVC panels to cover your rooftop and the walls; so you will need less repairs and maintenance in the future. They also prevent excessive pressure on the roof.

 

Advantages and disadvantages of UPVC sandwich panels

Advantages:

1. Flexible panels &#; they are best known for UBM roofing systems (curved roofs).

2. Less thickness but same efficiency as XPS or EPS sandwich panels.

3. Antibacterial sandwich wall & roof panels. Hence best sheets for pharmaceutical and sanitary Factories, etc.

4. Excellent safety with non-flammability properties.

5. No moisture absorption

6. Great sealing because of its high waves- so there would be no water penetration.

7. UPVC sandwich panels, economical choice &#; that is why they are called: eco-panels. They are cheaper compared to PU sandwich panels.

8. Best soundproofing materials.

9. Anti-corrosion coating screws are used when installing the sandwich panels.

10. Their life span is up to 50 years &#; whereas in conventional versions of sandwich panels, 25 years is expected.

 

Disadvantages:

1. Although UPVC sandwich panels are resistant to high temperature, yet cannot withstand the temperature higher than 75 °C.

2. They are not the most solid panels.

3. When installing UPVC sandwich panels, roof purlins should be spaced no further than 1 meter apart. The distance between purlins are important and should be considered before installing.

 

 

UPVC sandwich panels fire risk

UPVC roofing and wall panels and sheets have excellent fire resistant. They are non-combustible and fire retardant sheets.

 

 

About Sepidfam Varna &#; UPVC sheets & Sandwich Panels

Sepidfam Varna is the first manufacturer of UPVC sheets & Sandwich panels for roof and wall coating in Iran.

Our distribution Companies will ship our products to African and Middle East countries: Abu Dhabi - Sharjah - Dubai, UAE. Oman, Qatar, Armenia, etc.

 

For more information on UPVC sheets and sandwich panel&#;s price, Please leave a message or contact us at:

 

No: +98 912 962

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What are Sandwich Panel Advantages and Disadvantages?

-03-02

What is the sandwich panel?

A sandwich panel is a type of construction panel that consists of three layers - a core material sandwiched between two outer layers, or "skins", typically made of metal, plastic, or composite materials. The core material is usually made of lightweight materials such as foam, honeycomb, or balsa wood.

The sandwich panel's unique design provides several advantages over traditional construction materials. It is lightweight, yet strong, making it ideal for use in applications where weight is a critical factor. Additionally, the panel's insulating properties can help improve energy efficiency and reduce heating and cooling costs.

Sandwich panels produced by polyurethane sandwich panel production line are commonly used in the construction of walls, roofs, floors, and partitions in buildings, as well as in the manufacturing of vehicles, aircraft, and boats. They are also used in the creation of portable structures such as temporary offices, shelters, and exhibition stands.

Sandwich panel uses

Sandwich panels have a wide range of uses across various industries due to their unique properties. Some common uses of sandwich panels include:

Construction: Sandwich panels are commonly used in the construction of walls, roofs, floors, and partitions in buildings. They provide excellent insulation, and structural strength, and can be easily assembled and disassembled.

Transport: Sandwich panels are used in the manufacturing of vehicles, aircraft, and boats due to their lightweight and strong properties. They can be used to create parts such as doors, floors, and walls, which contribute to the overall weight reduction of the vehicle.

Cold storage: Sandwich panels are also used in cold storage rooms and warehouses due to their insulation properties. The panels can help maintain a constant temperature and prevent heat loss, resulting in energy efficiency and cost savings.

Cleanrooms: Sandwich panels are used in the construction of cleanrooms in industries such as pharmaceuticals, food processing, and electronics. They provide a clean and hygienic environment and can be easily cleaned and sterilized.

Portable structures: Sandwich panels are used to create portable structures such as temporary offices, shelters, and exhibition stands. They can be easily transported and assembled, making them ideal for use in outdoor events and construction sites.

Advantages of sandwich panels

Sandwich panels are composite structures made up of three layers - a lightweight core material sandwiched between two thin skins. These panels have many advantages, including:

Lightweight: Sandwich panels are lightweight, which makes them easy to handle, transport, and install. They can be used to construct buildings, walls, roofs, and floors, and they reduce the overall weight of the structure, which can save on material costs.

High strength: Despite their lightweight nature, sandwich panels are incredibly strong and have excellent load-bearing properties. They are resistant to bending, compression, and torsion, which makes them suitable for use in high-stress applications.

Thermal insulation: Sandwich panels have a high thermal insulation value, which makes them ideal for use in cold rooms, freezers, and other temperature-controlled environments. They can also be used to reduce energy costs by maintaining a stable indoor temperature.

Fire resistance: Sandwich panels are often made of fire-resistant materials, which makes them suitable for use in buildings that require high levels of fire safety. They have low flammability and are designed to slow down the spread of fire.

Acoustic insulation: Sandwich panels are effective at reducing noise and can be used to create soundproof rooms or buildings. They absorb sound waves, preventing them from bouncing around and creating echoes.

Durability: Sandwich panels are durable and can withstand harsh weather conditions, such as wind, rain, and hail. They are also resistant to corrosion and do not require much maintenance.

Aesthetically pleasing: Sandwich panels come in a wide range of colours and finishes, which makes them ideal for use in buildings that require an attractive appearance. They can be customized to match the surrounding environment and can be used to create a unique and modern look.

Overall, sandwich panels provided by the sandwich panel production line including PU sandwich panel line are an excellent building material that offers numerous advantages over traditional construction methods. They are cost-effective, energy-efficient, and versatile, making them suitable for a wide range of applications.

Disadvantages of sandwich panels

Sandwich panels have some disadvantages, including:

Cost: Sandwich panels can be more expensive than other building materials, especially when customized sizes and finishes are required.

Limited sizes: Sandwich panels are typically manufactured in standard sizes and thicknesses, which can limit design flexibility and require additional cutting and fitting for unique applications.

Durability: Sandwich panels are prone to damage if they are not properly installed or if they are exposed to extreme weather conditions, such as high winds or heavy rain.

Fire resistance: Some sandwich panels are not fire-resistant, which can pose a risk in buildings where fire safety is a concern.

Moisture resistance: Sandwich panels are susceptible to moisture intrusion if not properly sealed, which can cause damage and affect the insulation properties of the panel.

Recycling: Sandwich panels are difficult to recycle due to their composite nature, which can make disposal and end-of-life management a challenge.

It is important to consider these disadvantages when choosing building materials and to work with a knowledgeable sandwich panel machine supplier and installer to ensure the proper selection and installation of sandwich panels.

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