Apparatus and method for injecting a liquid dye into a...

Details Apparatus and method for injecting a liquid dye into a... Apparatus and method for injecting a liquid dye into a...

2007-10-09

2007-10-09

Soohoo, Tony G (Department: 1723)

Agitating

Rubber or heavy plastic working

With specified feed means

C366S076930, C366S182200, C137S565300

Reexamination Certificate

active

11040443

ABSTRACT:
An apparatus and a method for injecting a liquid dye into a polymer melt, which includes a metering pump with a metering inlet and a metering outlet. The metering inlet connects to a dye tank and the metering outlet connects to a polymer melt carrying component. To add the liquid dye to the polymer melt in the melt carrying component in a quantity that is as uniform and accurate as possible, the invention provides for connecting the metering inlet of the metering pump to a feed outlet of a feed pump, which connects with its feed inlet to the tank. With that, it is possible to generate a feed pressure at the metering inlet of the metering pump, which can be adapted to an injection pressure at the metering outlet of the metering pump.

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