Glass forming is the process of transforming molten glass into a finished product with an inherent shape. There are many types and shapes of glass products, and there are many molding methods. The viscosity of the glass melt gradually increases with decreasing temperature until it becomes brittle glass.  
 
Methods of glass forming (pressing, blowing, drawing, rolling, casting, float forming) 
 
The pressing method is an early method of molding, which is suitable for producing thick and thin glass products or thick walled hollow products with simple shapes  
 
Method: First, place the glass liquid 1 taken out from the melting furnace into the model 2, then place the mold ring 3 on the model, and then start pressing the mold core 4 downwards, pushing the glass liquid outwards until it fills all the inner cavities. After pressing the finished product 5, push the bottom plate 6 upwards to release the finished product.  
 
The first priority is to produce hollow glass products, such as household utensils, bottles and cans, and light bulbs. And many other finished products, etc. 
 
Blow molding includes manual blowing and active blowing. Due to low output value and high labor intensity, manual blowing is now rarely used except for blowing a few technical and artistic products and a few large commodities. And mainly through various active mechanical hair blowing methods.