Abstract: There is disclosed a nonwoven web consisting of highly drawn and unoriented thermoplastic fibers formed from a blend of propylene polymer and butylene polymer, wherein the blend by weight is from 90% to 50% polypropylene and from 10% to 50% polybutylene. The blend can be a blend of a homopolymer of polypropylene and a homopolymer of polybutylene; a homopolymer of polypropylene and a copolymer of butylene; a copolymer of propylene and a homopolymer of polybutylene; and a copolymer of propylene and a copolymer of butylene. In addition ternary blends (homopolymers of polypropylene, copolymers of propylene and butylene, terpolymers (propylene, 1-butene, and ethylene), and blends of terpolymers with polypropylene are useful. The resulting nonwoven webs have enhanced toughness, tear resistance, drape, and conformability.

Abstract: There is disclosed a three dimensional nonwoven web consisting of drawn and unoriented thermoplastic fibers formed from a blend of polypropylene and polybutylene, wherein the blend by weight is from 90% to 70% polypropylene and from 10% to 30% polybutylene. The blend can be a blend of a homopolymer of polypropylene and a homopolymer of polybutylene; a homopolymer of polypropylene and a copolymer of polybutylene; a copolymer of polypropylene and a homopolymer of polybutylene; and a copolymer of polypropylene and a copolymer of polybutylene. In addition, ternary blends comprising polypropylene, polybutylene, and terpolymer (propylene, ethylene, and 1-butene) are useful. The resulting nonwoven webs have enhanced strength, toughness, and tear resistance.

Abstract: Nonwoven wiper having improved absorbency characteristics and streak-free wiping properties having a laminate construction including a relatively high basis weight middle layer of meltblown thermoplastic microfibers with fibers added and, on one side, a lightweight layer of generally continuous filament thermoplastic fibers having a larger average diameter with a microfiber layer on the other side. These wipers are strong, fabric-like, and are useful for a wide variety of applications including industrial uses, food services, as well as many others. The continuous filament layers provide strength and low lint properties while the combination exhibits improved wiping characteristics. The laminate is preferably bonded by application of heat and pressure and the individual compounents are preferably treated with a surfactant.