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        The purpose of pre-pressing, pre-pressing machine is also called cold press 
        

        
分類：公司新聞
發布時間：2020-04-20 14:02:48
作者: 
來源: 

        

        The purpose of pre-press
        

        

        

        The purpose of pre-press
        
1. Eliminate the air in the slab to prevent a large amount of air from escaping through the slab during hot pressing.
        
2. The slab has a certain density to improve its own supporting
strength, so as not to be scattered or broken due to vibration during
transportation.
        
3. Reducing the thickness of the fluffy slab can reduce the opening of the press.
        
The pre-pressed slab is 2 / 3-3 / 4 less than the original (including
the rebound after off-machine), or 8-10 times the thickness of the
product. However, after pre-compression, the width of the slab should be
stretched by 5 to 7%.