The Procter Gamble Company

Michael Scott Bogdanski

Paul Ralph Bunke

Ursula Christina Glaser

Katherine Louise Moore

Katherine Louise Heinicke Moore

A cleansing preparation is provided in the form of an oil-in-water emulsion. The oil phase particles have a median particle diameter by volume of not more than 1 &mgr;m, and a preservative is present in at least the aqueous phase. A method is described of making this preparation, in which a coarse emulsion is formed, the coarse emulsion is homogenized, and the homogenized emulsion is diluted by an aqueous dilution liquid containing the preservative. Cleansing articles, for example baby wipes can be made in which a substrate carries the cleansing preparation.

Cleansing preparation and articles comprising a cleansing preparation

Wet wipes with low viscosity silicone emulsion systems

A cleansing preparation is provided in the form of an oil-in-water emulsion. The oil phase particles have a median particle diameter by volume of not more than 1 .mu.m, and a preservative is present in at least the aqueous phase. A method is described of making this preparation, in which a coarse emulsion is formed, the coarse emulsion is homogenized, and the homogenized emulsion is diluted by an aqueous dilution liquid containing the preservative. Cleansing articles, for example baby wipes can be made in which a substrate carries the cleansing preparation.

Cleansing preparation

A method and apparatus is disclosed for making absorbent structures having a layer of discrete particulate absorbent material which is divided into two or more bands separated by a substantially particulate-free zone. The method of making such absorbent structures comprises the steps of first generating an initial particle suspension comprising a two-phase fluid of particles of absorbent gelling material suspended in a gas (such as air) flowing in an inlet duct. The initial particle suspension is then divided into multiple final particle suspensions in corresponding multiple branch ducts, each of the final particle suspensions having a given percentage of particles as a function of cross-sectional area of the inlet duct. The particles in the final particle suspensions are substantially uniformly distributed as a function of cross-sectional position in the branch ducts. Finally, the suspended particles are filtered from the final particle suspensions by capturing them on a substrate such as a layer of tissue. An apparatus in accordance with the present invention for practicing the above method comprises an inlet duct, a particle suspension generator in fluid communication with the inlet duct for generating the initial particle suspension, at least two branch ducts in fluid communication with the inlet duct, and a particle suspension divider disposed within the inlet duct for dividing the initial particle suspension into multiple final particle suspensions in the branch ducts. In a preferred embodiment, the apparatus further comprises an adhesive delivery device for adhesively coating the particles in the final particle suspensions to form adhesively coated particles.

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Bonn, Germany

Michael Scott Bogdanski