Patent ID: 6066615
Filing Date: 2000-05-23
Classification: B30B,C11D

Abstract:
In a process for the manufacture of tablets of detergent composition for fabric washing, comprising compacting a particulate detergent composition containing from 5 to 50 wt % surfactant and from 5 to 80 wt % detergency builder, in a mould comprising a pair of dies which are moveable relatively towards and away from each other, wherein at least one of the dies has an elastomeric layer on an area which contacts the composition, the improvement wherein said elastomeric layer has a surface which contacts outside said detergent composition and a peripheral edge around said surface and has a thickness of at least 0.3 mm at its said peripheral edge and wherein, at the peripheral edge of the said area with elastomeric layer thereon, said die has a rigid rim surrounding said area said rim having an inside face which is undercut and in contact with said peripheral edge of said elastomeric layer and a further face which contacts the detergent composition and has a width in a range from 0.5 to 2.5 mm, whereby said further face of said rim and said surface of said elastomer layer both contact said detergent composition during compaction thereof.