Abstract: Dentifrice speckles of substantially uniform shape and size are made by agitating the material of such speckles (binder plus dentifrice component) in a liquid dispersing medium at a temperature at which the binder is liquid but undissolved and unemulsified in the dispersing medium, and cooling the dispersion to a temperature below the solidification point of the speckling material so as to solidify it into speckles of desired size. Such speckles may be separated from the dispersing medium or may remain in it and be utilized with it. Preferably the speckles are incorporated in dentifrices and contain dentifrice components desirably maintained separate from the rest of the dentifrice. Also included within the invention described are the speckles and dentifrices containing them.

Abstract: Dentifrice speckles of substantially uniform shape and size are made by agitating the material of such speckles (binder plus dentifrice component) in a liquid dispersing medium at temperature at which the binder is liquid but undissolved and unemulsified in the dispersing medium, and cooling the dispersion to a temperature below the solidification point of the speckling material so as to solidify it into speckles of desired size. Such speckles may be separated from the dispersing medium or may remain in it and be utilized with it. Preferably the speckles are incorporated in dentifrices and contain dentifrice components desirably maintained separate from the rest of the dentifrice. Also included within the invention described are the speckles and dentifrices containing them.

Abstract: Gas-free paste or gel dentifrices are made by a process which includes producing a degassed gel of a gelling agent in a polyhydric alcohol, and admixing it with other dentifrice constituents, including powdered light weight polishing agent, under vacuum. Preferably, the powdered polishing agent is degassed in a vacuum hopper, before addition to the gel base in a mixer. Where no vacuum hopper or similar facilities are available, however, powdered polishing agent may be added to the gel in a suitable mixer with adequate head space and any gas present is removed from it by vacuum while it is resting on the surface of the gel, after which the polishing agent is mixed in with the gel.

Abstract: Dentifrice speckles of substantially uniform shape and size are made by agitating the material of such speckles (binder plus dentifrice component) in a liquid dispersing medium at a temperature at which the binder is liquid but undissolved and unemulsified in the dispersing medium, and cooling the dispersion to a temperature below the solidification point of the speckling material so as to solidify it into speckles of desired size. Such speckles may be separated from the dispersing medium or may remain in it and be utilized with it. Preferably the speckles are incorporated in dentifrices and contain dentifrice components desirably maintained separate from the rest of the dentifrice. Also included within the invention described are the speckles and dentifrices containing them.

Abstract: A nozzle assembly for filling containers such as toothpaste tubes comprises inner and outer tubular members providing a core column of one fluent paste material separated from an annular column of a second fluent paste material, with the inner tubular casing being slotted for admitting streams of the second paste material peripherally into and along the core column before discharge from the nozzle assembly, as to produce a striped effect in the discharged composite product.