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.
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.
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.
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.
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.
