The bicomponent production lines include the PP/PE core - sheath bicomponent production line and the PPcoPP side - by - side bicomponent production line. The nonwoven fabrics produced by the PP/PE core - sheath bicomponent production line, due to the combination of the PE skin layer and the PP core layer, have both a soft touch, good strength, and excellent water resistance and chemical resistance. The PPcoPP side - by - side bicomponent production line endows the nonwoven fabrics with a natural crimping property, bringing high elasticity, fluffiness, and excellent wear resistance. They are widely applied in fields such as hygiene and medical care, home life, industry and