Method of making an absorbent disposable article

Details Method of making an absorbent disposable article Method of making an absorbent disposable article

1988-03-31

1991-05-07

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156301, 156302, 156324, 604378, B32B 3108, B32B 3110

Patent

active

050133829

ABSTRACT:
In an absorbent disposable article, such as in particular a diaper, in which an absorbent body is covered on one side by a liquid-impermeable protective sheet and on the opposite side by a porous layer, certain edge areas of the porous cover layer should be provided with a liquid-impermeable protective layer.
This protective layer is formed as a prefabricated impervious sheet and possesses, before being placed on cover layer, on one side a smooth and the other side an extremely coarse surface. The impervious sheet serving as the protective layer penetrates essentially exclusively with its coarse surface areas inside the cover layer. Through the smooth side of this impervious sheet, an absolute imperviousness is assured. Because of the physical bond, which forms between the impervious sheet and the cover layer, the impervious sheet can be formed extremely thin, i.e., a minimum amount of material is sufficient for the impervious sheet.
For only partial penetration of the impervious sheet into the cover layer, special manufacturing processes are indicated.

REFERENCES:
patent: 3604422 (1971-09-01), Sabee
patent: 3779246 (1973-12-01), Mesek et al.
patent: 3799167 (1974-03-01), Miller et al.
patent: 3840418 (1974-10-01), Sabee
patent: 3945386 (1976-03-01), Anczurowski et al.
patent: 4069822 (1978-01-01), Buell
patent: 4107426 (1978-08-01), Gordon
patent: 4573986 (1986-03-01), Minetola et al.
patent: 4849049 (1989-07-01), Colton

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