Unilever Home and Personal Care Usa, Division of Conopco, Inc.

Jacqueline Marie Thorpe

Frederick Edmund Stocker

Karnik Tarverdi

Peter Stewart Allan

Michael Andrew Browne

Paul Lloyd

Reginald Manley

Elfriede Maria Langeveld

Paul Reissen Rennie

A deodorant or antiperspirant soft solid composition is filled into dispensing containers by injection moulding, i.e. under pressure, preferably in the vicinity of its normal setting temperature. The deodorant or antiperspirant composition is preferably continuously produced in a screw extruder, especially a twin screw extruder, controlled to deliver the composition in a suitably viscous state under low shear and particularly for formulations in which a particulate antiperspirant is suspended in a fluid carrier. The pressure in the injection head at the point of injection is greater than 120 kPa and in many instances from 800 to 2000 kPa. The combined process offers benefits for controlled fill of dispensing containers, particularly for formulations incorporating sensitive ingredients and offers tolerance in composition temperature at the time of fill.

Process for the production of a deodorant or antiperspirant product

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Wirral, United Kingdom

Jacqueline Marie Thorpe