CREPED AND/OR APERTURED WEBS AND A PROCESS FOR PRODUCING THE SAME

• Main Authors: MARK BRUCE MAJORS, GREGORY ALAN ZELAZOSKI, BENJAMIN JOHN DECORSO, WILLIAM ANTHONY GEORGER, HOWARD MARTIN WELCH, RICHARD JOHN SCHMIDT
• Format: Patent
• Language: English; Spanish
• Published: 31.07.1998
• Edition: 6
• Subjects: BANDAGES, DRESSINGS OR ABSORBENT PADS; BRAIDING; COTTON-WOOL; CUTTING; CUTTING-OUT; 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; HAND CUTTING TOOLS; HUMAN NECESSITIES; HYGIENE; KNITTING; LACE-MAKING; LAUNDERING; MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNERANALOGOUS TO PAPER; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD ORMATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; MEDICAL OR VETERINARY SCIENCE; NON-WOVEN FABRICS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PERFORATING; PERFORMING OPERATIONS; PROSTHESES; PUNCHING; SEVERING; SEVERING BY MEANS OTHER THAN CUTTING; STAMPING-OUT; TEXTILES; TRANSPORTING; TREATMENT OF TEXTILES OR THE LIKE; TREATMENT OR PROTECTION OF EYES OR EARS; TRIMMINGS; WADDING; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUSTO PAPER

The present invention is directed to a process and apparatus for aperturing, creping and optionally laminating webs (14, 18) such as, for example, films and fibrous nonwovens. The present invention is also directed to the resultant materials. The process for aperturing and creping webs utilizes a pattern roll (22) and an anvil roll (24) with the anvil roll being rotated faster than the pattern roll. The resultant material is visually much different than conventional materials which are typically run through similar rolls wherein the pattern rool and anvil roll are run at the same speed or wherein the pattern roll is run faster than the anvil roll. The resultant materials have a wide variety of applications not the least of which includes a liner material for personal care absorbent articles such as diapers, training pants, feminine hygiene products, bandages and the like. La presente invencion se dirige a un proceso y a un aparato para perforar, crepar o opcionalmente laminar telas, tal como por ejemplo películas y no tejidos fibrosos. La presente invencion también se dirige a los materiales resultantes. El proceso para la perforacion y el crepado de tela su utiliza un rodillo de patron y rodillo de yunque con el rodillo de yunque siendo girado más rápido que el rodillo de patron. El material resultante es visualmente muy diferente de los materiales convencionales los cuales son típicamente corridos a través de rodillos similares en donde el rodillo de patron y el rodillo de yunque se corren a la misma velocidad o en donde el rodillo de patron se corre más rápido que el rodilo de yunque. Los materiales reusltantes tienen una amplia variedad de aplicaciones la menor de las cuales no es la incluye un materal de forro para artículos absorbentes paara el cuido personal tales como pañales, calzones de entrenamiento, productos para la higiene femenina, vendajes y similares.