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US 4,226,238 AGranted
Disposable diaper
AssigneeFameccanica S.p.A.
InventorCarlo Bianco
Life of this patent
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AssigneeFameccanica S.p.A.
InventorCarlo Bianco
Estimating the term…
A diaper comprises an outer sheet of waterproof plastic material having a deformed recess area between the sides and ends thereof which forms a pad receiving cavity which is bordered by marginal areas on each side and end. The cavity is about an inch deep and includes a bottom which is advantageously provided with corrugations or pleats which facilitate its expansion or distortion during wearing. An absorbent pad is disposed in the cavity, and a moisture holding strip of plastic material overlies at least a part of the marginal area on each side of the cavity and at least a portion of each side of the pad. The strip is welded to the marginal areas, and as a feature of the construction the plastic is stretched relative to the outer sheet and held in a stretched condition during welding so as to impart some resilient characteristics to the area which is adapted to be engaged around the legs of the wearer. Because the strip overlies the cavity, it aids in securing the pad in position and it insures that any liquid such as urine which may collect in the pad will not run out of the cavity.
A diaper comprising an outer sheet of waterproof plastic material having a recessed area between the sides and ends thereof forming a pad receiving cavity bordered by marginal areas on each side and end, said cavity having a bottom spaced outwardly from said marginal areas, an absorbent pad disposed in said cavity, and a moisture holding strip of plastic overlying at least a part of a marginal area on each side of said cavity and at least a portion of each side of said pad and having at least a portion secured to the outer sheet along the length of said moisture holding strip.
A process for making a diaper or similar sanitary product comprising forming an outer sheet with a cavity therein with a bottom spaced outwardly from marginal areas surrounding said cavities, and covering portions of each side of said cavity by first stretching a respective plastic strip for covering each side, and welding this strip to a respective marginal area on each side of the respective cavity so as to cause the strip after welding in recovery in its unstressed condition to crumple the outer sheet and form leg engaging resilient areas.
A disposable diaper comprising:
Dependencies are inferred from the claim text.