Coated film drying furnace

摘要

A coated film drying furnace for drying a coated film inside a furnace body by conveying the coated film therein, the coated film having an absorption spectrum for electromagnetic waves of 3.5 μm or less and having hydrogen bonds, such as an electrode coated film for lithium ion battery. Infrared heaters provided inside a furnace body have outer circumferences of filaments concentrically covered by tubes that function as a low pass filter, and have a structure in which a fluid flow passage is formed between the plurality of tubes. Due to this, a temperature rise in the furnace is controlled so as to prevent explosion of an organic solvent vapor, and the coated film is efficiently heated and dried by intensively radiating near infrared rays of 3.5 μm or less that have superior ability to cut off the intermolecular hydrogen bonds onto a work.

主权项

1. A coated film drying furnace for drying a coated film inside a furnace body by conveying the coated film, the coated film drying furnace comprising:
an infrared heater provided inside the furnace body, wherein: the coated film has an absorption spectrum for electromagnetic waves of 3.5 μm or less and has hydrogen bonds; the infrared heater has an outer circumference of a filament concentrically covered by a plurality of tubes that functions as a low pass filter; and the infrared heater has a structure in which a fluid flow passage is formed between the plurality of tubes and a port is placed inward from holders positioned at ends of the filament so that the fluid flow passage is exhausted outside of the furnace.