Process for the production of a deodorant or antiperspirant product
US6703005B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2001 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | Dec 8, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S424/05
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.