MELT BLOWING PROCESS LOW SHRINKAGE MELT BLOWN POLYMER FIBERS AND FIBROUS STRUCTURES AND MELT BLOWABLE POLYMER COMPOSITIONS

摘要

A melt blowing process comprising: (a) providing a thermoplastic polymer material that includes at least one or a plurality of polyester polymers and at least one or a combination of different meltable metal phosphinates; and (b) melt blowing the thermoplastic polymer material into at least one fiber or a plurality of fibers with each fiber having a diameter or thickness that is less than about 10 microns. The metal phosphinate is in an amount that (a) reduces the viscosity of the polyester polymer and (b) functions as a crystallizing agent which at least promotes crystallization of the polyester polymer when the thermoplastic polymer material is melt blown into the at least one fiber. Non woven and woven fibrous structures can be made using fibers made from this process.