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US 4,793,959 AGranted
Process for stamping a detergent bar
AssigneeLever Brothers Company
InventorsMichael J. Adams, Brian Edmondson
Life of this patent
Estimating the term…
Abstract
Detergent bars (soap or non-soap) are stamped or imprinted using a die or dies having a modulus of elasticity in the range 5.times.10.sup.5 to 1.times.10.sup.7 Nm.sup.-2. This gives reduced adhesion of detergent to die, reduced die-blocking and consequently reduced marring of bars. Preferably each such die has a facing layer of elastomer so as to achieve the desired low modulus of elasticity which preferably is distinctly less than that of the detergent.
Claims10
In a process of stamping a detergent bar by moving at least one die member relatively towards the bar so as to contact the bar,
- the improvement wherein said at least one die member has a total modulus of elasticity within the range 10.sup.5 to 5.times.10.sup.7 Nm.sup.-2, whereby die-blocking is reduced and a good quality gloss and sheen is imparted to the surface of said bar.
Dependencies are inferred from the claim text.