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1. WO1996003947 - ABSORBENT COMPRISING UPPER AND LOWER GEL LAYERS

Publication Number WO/1996/003947
Publication Date 15.02.1996
International Application No. PCT/US1995/008709
International Filing Date 13.07.1995
Chapter 2 Demand Filed 20.02.1996
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 13/5323
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
53characterised by the absorbing medium
531having a homogeneous composition through the thickness of the pad
532inhomogeneous in the plane of the pad
5323having absorbent material located in discrete regions, e.g. pockets
A61F 13/534
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
53characterised by the absorbing medium
534having an inhomogeneous composition through the thickness of the pad
Applicants
  • THE PROCTER & GAMBLE COMPANY [US]/[US] (AllExceptUS)
  • BOGDANSKI, Michael, Scott [US]/[US] (UsOnly)
  • FEIST, Barry, Robert [US]/[US] (UsOnly)
  • LITCHHOLT, John, Joseph [US]/[US] (UsOnly)
  • SANCHEZ, Liza, Marie [US]/[US] (UsOnly)
  • SCHMIDT, Mattias [DE]/[DE] (UsOnly)
Inventors
  • BOGDANSKI, Michael, Scott
  • FEIST, Barry, Robert
  • LITCHHOLT, John, Joseph
  • SANCHEZ, Liza, Marie
  • SCHMIDT, Mattias
Agents
  • REED, T., David
Priority Data
94111955.401.08.1994EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ABSORBENT COMPRISING UPPER AND LOWER GEL LAYERS
(FR) ABSORBANT COMPRENANT DEUX COUCHES DE GEL, L'UNE SUPERIEURE ET L'AUTRE INFERIEURE
Abstract
(EN)
The invention relates to an absorbent structure (1) having a first layer which forms a mixture of absorbent gelling material particles (5), fibers, a second layer comprising liquid permeable substrate (7), and absorbent gelling material particles (9) attached to said substrate thus forming a laminate. The weight of the absorbent gelling material particles (5) in the mixed layer is not more than 70 percent, preferably not more than 60 percent of the weight of the mixed layer. The combined weight of the absorbent gelling material particles attached to the substrate (7), and in the mixed layer (5) is at least 80 percent, preferably at least 140 percent of the weight of fibers in the mixed layer (5). The laminate (7, 9) can be located on top of the mixed layer (5), and comprises an acquisition zone (15) of low basis weight of absorbent gelling material particles. The laminate may also be located below the mixed layer.
(FR)
L'invention concerne une structure d'absorbant (1) ayant une première couche constituée d'un mélange de particules absorbantes de matériau formant gel (5) et de fibres et une seconde couche comprenant un substrat (7) perméable aux liquides et des particules absorbantes de matériau formant gel (9), fixées au substrat pour constituer un stratifié. Le poids des particules absorbantes de matériau formant gel (5) dans la couche mixte ne dépasse pas 70 pourcent et de préférence 60 pourcent du poids de la couche mixte. Le poids combiné des particules absorbantes de matériau formant gel fixées au substrat (7) et présentes dans la couche mixte (5) est égal au moins à 80 pourcent, de préférence au moins à 140 pourcent du poids des fibres de la couche mixte (5). Le stratifié (7, 9) peut se trouver sur la couche mixte (5) et comporter une zone d'absorption (15) à faible poids de base des particules absorbantes formant gel. Le stratifié peut également être placé sous la couche mixte.
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