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1. WO1999055532 - METHOD FOR FORMING APERTURED LAMINATE WEB

Publication Number WO/1999/055532
Publication Date 04.11.1999
International Application No. PCT/US1999/009095
International Filing Date 27.04.1999
Chapter 2 Demand Filed 25.10.1999
IPC
A61F 13/15 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
13Bandages or dressings; Absorbent pads
15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
CPC
A61F 13/15731
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
13Bandages or dressings
15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body
15577Apparatus or processes for manufacturing
15707Mechanical treatment, e.g. notching, twisting, compressing, shaping
15731Treating webs, e.g. for giving them a fibrelike appearance, e.g. by embossing
Applicants
  • THE PROCTER & GAMBLE COMPANY [US]/[US] (AllExceptUS)
  • BUSAM, Ludwig [DE]/[DE] (UsOnly)
  • DIVO, Michael [DE]/[DE] (UsOnly)
  • FLOHR, Andreas [DE]/[DE] (UsOnly)
  • KECK, Ralph [DE]/[DE] (UsOnly)
Inventors
  • BUSAM, Ludwig
  • DIVO, Michael
  • FLOHR, Andreas
  • KECK, Ralph
Agents
  • REED, T., David
Priority Data
98107681.328.04.1998EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD FOR FORMING APERTURED LAMINATE WEB
(FR) PROCEDE DE FABRICATION D'UN VOILE MULTICOUCHE PERFORE
Abstract
(EN)
A method for forming an apertured laminate web (40) formed from a first material (42) and second material (44) which may be used as a topsheet (24) on a disposable absorbent article, such as a diaper. The second material (44) preferably has a hydrophilicity which is greater than the hydrophilicity of the first material (42). The first and second materials (42, 44) are fed through a nip (250) formed by a first pair of heated rollers one of the rollers (260) having a smooth outer surface and the other roller (254) having an outer surface with a plurality of projections extending from its outer surface. The first pair of rollers bond the materials together to form a laminate web (40) and create a plurality of apertures having a fused perimeter. Cooling the laminate web (40) to solidify the fused perimeter of the apertures. Feeding the laminate through a nip (250) formed by a second pair of rollers to break the solidified fused perimeter of the apertures.
(FR)
La présente invention concerne un procédé permettant de fabriquer un voile multicouche perforé (40) à partir d'une première matière (42) et d'une seconde matière (44), et qui peut être utilisé comme enveloppe extérieure (24) pour un article absorbant jetable, tel que des couches. L'hydrophilicité de la seconde matière (44) est de préférence supérieure à celle de la première matière (42). La première et la seconde matière (42, 44) sont introduites dans la zone de pincement (250) de deux rouleaux chauffés dont l'un (260) présente une surface extérieure lisse et l'autre (254) une surface extérieure munie d'une pluralité de saillants. Le passage entre la première paire de rouleaux à pour effet de faire adhérer les matières l'une à l'autre pour former un voile multicouche (40) et de créer une pluralité de perforations dont le périmètre est obtenu par fusion. Le refroidissement du voile multicouche (40) entraîne une solidification du périmètre obtenu par fusion des perforations. Le passage dans la zone de pincement (250) d'une seconde paire de rouleaux provoque la rupture du périmètre solidifié obtenu par fusion.
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