Refastenable pressure-sensitive tape closure system for disposab

Details Refastenable pressure-sensitive tape closure system for disposab Refastenable pressure-sensitive tape closure system for disposab

1979-06-22

1981-10-27

Rosenbaum, C. Fred

Surgery

Respiratory method or device

Ozone or ion generation

A41B 1302

Patent

active

042967503

ABSTRACT:
In disposable diapers which are equipped with tape closure means and have an impermeable thin film backing, the improvement in which selected areas of the thin film, which areas serve as tape securement zones when the diapers are in use, have uniformly adhered to that side of the film facing the diaper interior a layer of hot melt adhesive to provide a composite structure in the selected areas having a high resistance to tearing when tensile loads are applied. The hot melt adhesive layer has a lower modulus of elasticity than the film and is applied in heat-softened condition to obtain strong, uniform adherence to the film. In a method for applying the adhesive layer, a wide band of adhesive of predetermined thickness is extruded in heat-softened condition into direct contact with selected areas of a moving web of the film. The adhesive is one which has a Ring & Ball softening point lower than the heat distortion temperature of the film and during application will not thermally degrade or distort the film.

REFERENCES:
patent: 3520303 (1970-07-01), Endres
patent: 3951151 (1976-04-01), Teed
patent: 3952745 (1976-04-01), Duncan
patent: 4055182 (1977-10-01), Mack
patent: 4210144 (1980-07-01), Sarge et al.

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