There are different types of sandwich panels, the structure of wall and ceiling panels is such that it is made of 2 layers of metal sheet on the sides and a layer of insulating foam in its core, but these panels have technical appearance characteristics, physical design, according to their application. and the middle layer are different.

The hidden screw sandwich panel is one of the most widely used types, which plays a significant role in the beauty of buildings and structures. As the name suggests, the hidden screw is designed to be hidden under the edges after installation. .

They have different thickness, which is between 4 cm and 6 cm. The insulation density of the hidden screw wall sandwich panel is 2+_30 and 2+_40. The way of installing these screws is that first the edge of one of these panels is screwed on the skeleton of the structure and secured, then the overlap of the second panel is placed on it and it covers the screw and there is no trace of the screw left. It gives a beautiful appearance to the panel.

Most of the engineers use this sandwich panel for more elegance and stylish work and better quality. The sheets used in this panel are galvanized, aluzinc and aluminum. Alozinc sheet has less decay and corrosion than other sheets due to the material used in it.

Nowadays, it is widely used in the construction of prefabricated walls due to its light weight and easy installation. It is a new phenomenon in the field of building structures. The installation of these walls is integrated due to the mechanism used in it, and it is more resistant to There is an earthquake.

This strength is due to the grooves that are placed on the panel. This screw is designed in such a way that it has depressions and protrusions. One of the prominent features of these screws is that they are ineffective against electric current. It reacts with chemical substances and has a high resistance to rainwater penetration.