Autoclave is heating and pressurized equipment in the production process which is done automatically by electrical control of laminated glass. In the laminated glass production process, bubbles and other common glass defects may appear. The role of autoclave is degassing the gas between glass and PVB, which leads to the PVB becomes a viscous state and increases viscous force between glasses. So the glass and PVB film perfectly stick together finally, and we can improve the yield of laminated glass.