Patents Assigned to Rowasol GmbH
  • Publication number: 20130315029
    Abstract: A device and method for metering and/or feeding in liquid colorants and/or functional additives, in particular odorants is described. The device includes a plurality of tanks, a plurality of primary pumps each of which are associated with respective tanks and a colorant mixing device. The colorant mixing device has a plurality of valves with valve inlets and valve outlets, a collecting chamber in a collecting block which is connected to the valve outlets via very small volumes on its inlet side. A mixer is connected to the collecting chamber and a dispensing line is connected to the mixer. The primary pumps are connected in each case to a valve inlet. The through flow volume of the very small volumes is in each case at most 10 cm3, preferably considerably smaller. A further pump for feeding in liquid colorants or additives into a polymer melt can be dispensed with.
    Type: Application
    Filed: July 24, 2013
    Publication date: November 28, 2013
    Applicants: Rowasol GmbH, Oerlikon Textile GmbH & Co. KG
    Inventors: Ulrich Helbing, Dietrich Witzler, Uwe Wende, Klaus Stefan Meier