Abstract:

Wet-laid is derived from traditional paper industry and is one of the important processes of it, wet-laid technology has been applied to the fields of nonwovens by improving the production process. With the increasing demand of products, synthetic fiber is being widely used in production since the traditional natural fiber can not meet the technical requirements of functional nonwoven products. With a variety of performance and structural advantages, synthetic fiber has gradually expanded the scope of application in the paper and wet-laid nonwovens. However, the hydrophobic properties of synthetic fiber, dispersion, characterization methods, the matching process, the development and application of new products etc. have been restricting the expansion of wet laid nonwovens. This paper mainly introduces the similarities and differences between wet-laid with synthetic fiber used in papermaking and nonwoven industries , several commonly used dispersion methods and characterization of synthetic fiber are also analyzed in this paper.