Refill system with improved utilization rate of ultra-thin glass production process

A refill system of an ultra-thin glass production process, the refill system comprising:

• a tempering furnace filled with a molten potassium nitrate to temper a glass;
• a refill furnace which receives a powdered potassium nitrate to melt the powdered potassium nitrate to the molten potassium nitrate and stores the molten potassium nitrate obtained by melting the powdered potassium nitrate;
• a supply unit which supplies the molten potassium nitrate in the refill furnace to the tempering furnace;
• a tempering furnace side load measuring unit which measures a load amount of the molten potassium nitrate in the tempering furnace;
• a refill furnace side load measuring unit which measures a load amount of the molten potassium nitrate in the refill furnace;
• and
• a central control unit which checks the load amount of the molten potassium nitrate in the tempering furnace and the load amount of the molten potassium nitrate in the refill furnace in real time using the tempering furnace side load measuring unit and the refill furnace side load measuring unit, controls the supply unit to supply the molten potassium nitrate in the refill furnace to the tempering furnace, and controls the supply unit to stop supplying the molten potassium nitrate to the tempering furnace when the load amount of the molten potassium nitrate in the tempering furnace is greater than or equal to a predetermined load amount,
• wherein the central control unit pauses for a predetermined time to stabilize the molten potassium nitrate filled in the tempering furnace before immersing any glass-loaded cassette in the tempering furnace when the supply unit is controlled to stop supplying the molten potassium nitrate to the tempering furnace.