A fraction of a second after the foil is pushed over the part, the hot stamp die  
surface makes contact simultaneously with the foil and the rigidly supported 
plastic piece. The pressure that is exerted accomplishes two things. First, the   
silicone rubber will compress and conform to any small surface variations in
the part decorating area so that even contact is achieved. Second, the foil
resins in the graphic are will break cleanly creating a parting line.