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Sandwich panel line manufacturer – what should you know?

What is sandwich panel ?
Sandwich panels are products used to clad the walls and roofs of buildings. Each panel contains a core of thermal insulation and is skinned with metal plates on both sides. Sandwich panels are not structural materials, but curtain materials. Structural forces are carried by a steel frame or other load-bearing frame to which the sandwich panel is attached.

The types of sandwich panels are usually grouped by the insulation material used as the core. Sandwich panels with EPS (expanded polystyrene), mineral wool and polyurethane (PIR or PUR) cores are all readily available.

These materials differ in thermal insulation, sound insulation, fire response and weight.

Sandwich panel application


One obvious application is in aircraft where mechanical performance and weight reduction are critical. Transportation and automotive applications also exist.

 In buildings and constructions, these prefabricated products are designed to be used as building envelopes. They appear in industrial and office buildings, clean and cold rooms, and private homes, whether renovated or newly built. They combine high-quality products with highly flexible designs. They usually have good energy efficiency and sustainability.

Why use sandwich panels ?

Sandwich panels are well-received for their many advantages, mainly cost-related advantages. A comparison between frame or column separation technology (framed with sandwich panels) and traditional building technology based on masonry walls shows the advantages of sandwich panels in three key areas:

 

1.     Direct cost

Building buildings using either technology requires similar levels of capital expenditure.

This comparison includes the cost of building materials, labor, and transportation.

 

 

2. Construction time

Buildings based on traditional masonry processes can take 6 to 7 months to complete.

Buildings of the same volume using stud partitions can be completed in just 1 month, or even shorter.

Construction time is critical to the business. The sooner the production plant or warehouse is put into use, the better the return on investment will be.

 

Pillar partitions are assembled rather than "built". The finished structural parts and cladding assemblies arrive at the site and are then assembled like a toy brick house. Another advantage is that there is no need to wait for the building shell to lose excess moisture.

 

3. Construction process

In some industries, construction requirements can be critical for construction projects. The construction of the stud bulkhead is a "drying process" and does not require water as a building material. The dry method only requires assembling the structure and fixing the covering with screws (here a sandwich panel).

 

Traditional masonry buildings use a "wet process", which requires a large amount of water to make mortar for brickwork, concrete for pouring or plaster for plastering.

 

Certain industries, such as wood processing or the pharmaceutical industry, require fixed and controlled relative humidity levels, and even largely need dry construction.

What is sandwich panel line ?



Certainly, the sandwich line is the machine which can make sandwich panels. Usually there are two types, continuous sandwich panel line and discontinuous sandwich panel line. The continuous sandwich panel line is automatic and its product quality is much better. It’s widely used in the world now. So we are talking about the continuous sandwich panel line here.



Sandwich panel line mainly includes the following parts: uncoiling system (upper and lower), roll forming machine (upper and lower), preheating oven, foam injection machine, rock wool system, accessories of foaming system, double belt laminator, double belt heating device, cutting system, cooling system, stacking system, packing system, etc. The rock wool system consists of rock wool lifting device, rock wool slitting device rock wool turning device, upper and lower foam spraying system, dust collecting device and conveyor, etc. 

The whole line can be custom made according to customer, especially the roll forming machines, the length of the double belt laminator. Different customer has different technical requirements and asks for different profiles. So the machines are totally customized and various. 

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