like particularly suitable polymers for use in the present invention are polyolefins including polyethylene for example linear low density polyethylene low density polyethylene medium density polyethylene high density polyethylene and blends thereof polypropylene polybutylene and copolymers as well as blends thereof additionally the suitable fiber forming polymers may have thermoplastic elastomers blended therein in addition staple fibers may be employed in the nonwoven web as a binder in order to provide stability to the product material the nonwoven web is bonded either by application of an adhesive from adhesive system 25 or by thermal bonding such as by through air bonding a calender or the like or by means of a hot air knife hak 24 a hot air knife is used to bond the individual polymer fibers together at various locations so that the web has increased strength and structural integrity for subsequent treatments such as passage through a through air bonding tab unit a conventional hot air knife includes a mandrel with a slot that blows a jet of hot air onto the nonwoven web surface such hot air knives are taught for example by u s pat no 5 707 468 to arnold et al as shown in fig1 a base material 21 of substantially continuous fibers is fed onto first moving surface 11 from a fiber distribution unit 16 as at reference numeral 16 however it will be apparent to those skilled in the art that certain base material 21 fibers may be.