Welding method for disposable diapers

Details Welding method for disposable diapers Welding method for disposable diapers

1995-03-31

1997-04-08

Johnstone, Adrienne C.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156204, 156217, 156227, 156292, 1563084, 1563244, 6043851, 604396, A61F 1315, A41B 912, B32B 3110, B32B 3120

Patent

active

056183666

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 the melting 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: 5507895 (1996-04-01), Suekane

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