Welded disposable diapers

Details Welded disposable diapers Welded disposable diapers

1994-05-16

1997-05-13

Johnstone, Adrienne C.

Surgery

Means and methods for collecting body fluids or waste material

Absorbent pad for external or internal application and...

156 731, 1563084, 1563244, 604396, A61F 1315, A41B 912

Patent

active

056287380

ABSTRACT:
A welding method for a disposable diaper includes the steps of putting wing-like portions 21, 22 provided on front and rear bodies 5, 6 including a topsheet 2, a backsheet 3 and a core 4 sandwiched therebetween, one upon another, with the topsheet disposed face to face; placing covering sheets 20 on an outer surface of the wing-like portions, both the covering sheets and the wing-like portions having a melting point higher than themelting point of the backsheet; and welding, under heat and pressure exerted from above the covering sheets, laterally opposite side edges of the wing-like portions.

REFERENCES:
patent: 4205679 (1980-06-01), Repke et al.
patent: 4743241 (1988-05-01), Igaue et al.
patent: 4863779 (1989-09-01), Daponte
patent: 5064489 (1991-11-01), Ujimoto et al.
patent: 5507895 (1996-04-01), Suekane

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