Spray spun nonwoven fabric

Fig. 5.10 A spray spun nonwoven fabric is shown in the SE images (A and B). A side view of the fabric is shown (A) on an SEM stub while a face view (B) shows there is a range of fiber diameters and shapes present with no specific pattern or arrangement. A calendered nonwoven surface is shown by SE images (C and D). The spots on the surface are regions of local melting that hold the fabric together (C). At higher magnifications (D) the fibers are seen to range from round to deformed shapes.

Nonwoven fabrics are another form of fiber assemblage, but they are less regular and uniform in structure than woven fabrics. A qualitative evaluation of nonwoven samples has been shown using a special stain (Pylam Products Co., Tempe, AZ) to identify fibers including polyester, rayon, wood pulp, and polypropylene as well as various blends and bonding points and binder distribution [50]. A spray spun nonwoven is shown in side view (Fig. 5.10A) on an SEM stub, and a surface view (Fig. 5.10B) shows the fabric has a range... 

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