Methods and apparatus for making multi-layer absorbent products

Improved method and apparatus for forming absorbent products and the improved absorbent products formed thereby are disclosed. In a first embodiment of the present invention, a rotary die (100) is used to cut ellipsoidal and hyperbolic-shaped portions (52, 54) from a single sheet of material (50) an...

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Bibliographische Detailangaben
1. Verfasser:	MENARD MICHAEL J
Format:	Patent
Sprache:	eng ; slv
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS CUTTING CUTTING-OUT DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING,CUTTING-OUT, STAMPING-OUT OR SEVERING DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HAND CUTTING TOOLS HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PERFORATING PERFORMING OPERATIONS PROSTHESES PUNCHING SEVERING SEVERING BY MEANS OTHER THAN CUTTING STAMPING-OUT TRANSPORTING TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	Improved method and apparatus for forming absorbent products and the improved absorbent products formed thereby are disclosed. In a first embodiment of the present invention, a rotary die (100) is used to cut ellipsoidal and hyperbolic-shaped portions (52, 54) from a single sheet of material (50) and these shapes are overlaid to form an absorbent structure. The shapes are chosen such that there is no waste of the material and yet the resulting absorbent structure is of a useful shape. Methods are also disclosed whereby two sets of rotary dies are used to simultaneously cut two sheets of material into an arcuate segment and the arcuate segments are overlaid atop each other to form useful absorbent structures. In either embodiment, powders such as superabsorbents may be added to one or more of the surfaces of the components used to construct the absorbent structures.