Patent ID: 7416608
Filing Date: 2008-08-26
Classification: B05C

Abstract:
1. An apparatus for block type extrusion coatings comprising a die set and a control device, wherein the die set comprises an upper mold, a lower mold and a comb-shaped shim having a plurality of vacant regions, a first groove being formed on a lower surface of the upper mold, so that a plurality of channels for permitting a coating solution to flow from the first groove to a slit between a die lip of the upper mold to a die lip of the lower mold are formed between the upper mold and the lower mold, when the shim is disposed between the upper mold and the lower mold, wherein the upper mold further comprises a feed hole connected to the first groove, a first extraction hole connected to the first groove, and a second extraction hole connected to the first groove; and the control device comprising a first pump, a second pump, a first valve, a second valve, a third valve, and a controller, wherein the first pump and the first valve are placed at a feed pipe connected to the feed hole; the second pump and the third valve are placed at an extraction pipe connected to the second extraction hole; the second valve is placed at a release pipe connected to the first extraction hole; the first pump, the second pump, the first valve, the second valve, and the third valve being all electrically connected to the controller, so that the first pump, the second pump, the first valve, the second valve, and the third valve are capable of being controlled by a signal received from the controller.