METHOD AND APPARATUS FOR MAKING MULTI-LAYER ABSORBENT PRODUCTS

IMPROVED METHODS 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 IS USED TO CUT ELLIPSOIDAL AND HYPERBOLIC-SHAPED FROM A SINGLE SHEET OF MATERIAL AND THESE SHAPES ARE OVERLAID...

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1. Verfasser:	MICHAEL J. MENARD
Format:	Patent
Sprache:	eng
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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Zusammenfassung:	IMPROVED METHODS 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 IS USED TO CUT ELLIPSOIDAL AND HYPERBOLIC-SHAPED FROM A SINGLE SHEET OF MATERIAL 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 TOSIMULTANEOUSLY CUT TWO SHEETS OF MATERIAL IN 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.(FIG.1)