Hidden frame glass curtain wall related knowledge introduction

Glass curtain wall is a very common way to decorate modern buildings and became a prominent feature of the modernist high-rise building era. With the development of technology, a hidden frame glass curtain wall has appeared. What is the hidden frame glass curtain wall, what are the classification and characteristics of hidden frame glass curtain wall?
Hidden frame glass curtain wall is the glass with silicone structural sealing adhesive bonded to the aluminum frame, in most cases, no more metal connectors. Therefore, the aluminum frame is all hidden behind the glass, forming a large area of all-glass mirror. Hidden frame glass curtain wall is divided into integral hidden frame glass curtain wall and separate hidden frame glass curtain wall:
(1) Integrated hidden frame glass curtain wall This is the first generation of hidden frame glass curtain wall, the glass of this curtain wall is directly fixed by silicone sealant on the frame of the aluminum alloy structure of the curtain wall. When installing glass, it is necessary to use an auxiliary fixing device to fix the glass on the frame of the curtain wall, and then glue it. The auxiliary device can be removed only when the sealant is cured and can withstand the specified load. The security and reliability of this curtain wall is poor, and it is extremely difficult to replace the glass, and it is rarely used in a large area of glass curtain walls.
(2) Separated hidden frame glass curtain wall The separated hidden frame glass curtain wall is fixed on a secondary frame by structural assembly, so that the secondary frame and the glass form a structural component, and then the structural component is fixed on the main frame by bolts. This way of installing glass is divided into: built-in, external buckle, external fixed, external fixed and so on because of the different fixing methods of the structural glass components on the main frame body.