Three dimensional polymer webs and methods of making same

Three-dimensional nonwoven webs comprise at least one layer consisting of drawn and unoriented thermoplatic 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 homop...

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Bibliographische Detailangaben
Hauptverfasser:	GWALTNEY, SHARON WATKINS, SHAWVER, SUSAN ELAINE, WATTS, HUGO PAUL, DAPONTE, DIEGO H
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS BRAIDING CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS COFFEE MILLS COTTON-WOOL DOMESTIC ARTICLES OR APPLIANCES DOMESTIC WASHING OR CLEANING FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS FURNITURE HUMAN NECESSITIES KNITTING LACE-MAKING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL NATURAL OR ARTIFICIAL THREADS OR FIBRES NON-WOVEN FABRICS PERFORMING OPERATIONS SPICE MILLS SPINNING SUCTION CLEANERS IN GENERAL TEXTILES TRANSPORTING TRIMMINGS WADDING
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Beschreibung
Zusammenfassung:	Three-dimensional nonwoven webs comprise at least one layer consisting of drawn and unoriented thermoplatic 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 polybutlene: 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 a terpolymer (propylene, ethylene, and l-butene) are disclosed. The resulting nonwoven webs have high strength, toughness, and tear resistance.