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              Lesson 4 The finishing of nonwoven fabrics
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                      The purpose of finishing is to improve the character of service of nonwoven fabrics. Generallytwo finishing ways are carried out before using nonwovens used for synthetic leather which arePVA sizing method and ironing method.3.4.1 PVA sizing3.4.1.1 The pu......（本文共 9583 字）      [閱讀本文] >> 
               
			  
				 
              
				 
				
				
              
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