US EDI Extrusion Dies Inc. (EDI) announced that the first multi-channel liquid applied to the substrate close to the coating die, enabling processors to use a single die at the same time to complete two or more brushing, in order to obtain the ratio The multi-stage painting process is more productive and avoids oxidation and fouling between the various stages of the coating.
According to EDI, a high-performance electronic film manufacturer has successfully used the dual-pass and three-flow EDI Ultracoat (R type) manual coating die to apply two-layer and three-layer ceramic mortar to a polyester film substrate.
Coating dies product manager Jeffrey Seckora said: “The coating die (ie, close to the coating method) regulates the flow of the coating liquid at a constant speed in advance, and acts as a completely closed system, reducing air emissions problems. Therefore, it is more efficient and easier to control than the traditional roller brushing method.The development of the multi-passage slot die enables the processor to paint two or more layers at one time, thus increasing the productivity and quality advantages to one. New height."
Seckora pointed out that the multi-pass Ultracoat die can also be used for other applications, such as coating the silicone release layer and pressure-sensitive adhesive at the same time during the paper coating process, and coating the electrolyte layer and the cathode layer on the thin film battery. .
The EDI engineer designed the die to produce a laminar flow of the coating (the coating is still evident after the coating material is bonded), thus successfully developing a multi-pass Ultracoat system. Seckora pointed out: “Viscous liquids are more likely to realize laminar flow, just like the melt flow in plastic co-extrusion. For the less viscous liquids used in the coating, our engineers designed a streamlined system to make different flows. When the layers meet, no disorder or mixture of substances will occur."
Source of information: pack.cn