Inerted Plate Dryer and Method of Drying Solvent Based Coating

摘要

An inerted plate dryer for drying solvent based coating is disclosed. The dryer uses two tiers of substantially parallel heating plates that are located not more than 10 cm apart. A moving web with solvent based coating is passed through the dryer, and runs closer to one of the heating plates. The method of using such inerted plate dryer is also disclosed.

主权项

1. An apparatus for drying, curing, or deaereating a continuous moving web carrying a liquid layer, comprising:
a housing enclosing a drying chamber, said housing having entry and exit slots through which said web may be passing through said chamber; said entry and exit slots having a sealing mechanism to prevent leakage of ambient air into the drying chamber, or leaking out of the gas stream from the chamber into the ambient; a bottom heated plate and a top heated plate aligned substantially parallel to each other with a space between them, said space is no more than 10 cm distance apart, preferably less than 5 cm, and most preferably from 0.5 to 3.5 cm apart; the web that carries a liquid layer is located less than 20 mm and preferably less than 10 mm from the bottom heated plate; at least one inlet for a gas stream to flow into the chamber with a velocity, said velocity is between 2 m/s and 20 m/s, and preferably 6-15 m/s; at least one outlet for an exhaust to flow out of the chamber, wherein the carrier web is closer to the bottom plate than to the top plate.