processo para preparar um material estreitado

• Main Authors: MICHAEL TOD MORMAN, COURTNEY EILEEN SHEA, ANGELA GRACE DOBSON, ROBERT DAVID WRIGHT, ROBERT JAMES GERNDT, RASHA WAFIK ZAKI GUIRGUIS, JOHN JOSEPH SAYOVITZ, MARK GILBERT KUPELIAN, PATRICIA HWANG CALHOUN, GREGORY TODD SUDDUTH
• Format: Patent
• Language: Portuguese
• Published: 03.09.2013
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BANDAGES, DRESSINGS OR ABSORBENT PADS; BRAIDING; COTTON-WOOL; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS; FIRST-AID KITS; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; FOMENTATION; HUMAN NECESSITIES; HYGIENE; KNITTING; LACE-MAKING; LAUNDERING; 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; MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS; MEDICAL OR VETERINARY SCIENCE; NON-WOVEN FABRICS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PERFORMING OPERATIONS; PROSTHESES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TEXTILES; TRANSPORTING; TREATMENT OF TEXTILES OR THE LIKE; TREATMENT OR PROTECTION OF EYES OR EARS; TRIMMINGS; WADDING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A process for making a plurality of necked nonwoven strips having similar or identical cross-directional profiles includes the steps of slitting a neckable nonwoven web into a plurality of neckable nonwoven strips, passing the neckable nonwoven web between a first pair of nip rollers having a first surface velocity and a second pair of nip rollers having a second surface velocity greater than the first surface velocity, and necking the nonwoven web between the first pair of nip rollers and the second pair of nip rollers.