FACTORY

The silica sand, borax and boric acid are delivered into the mixer with the force of air and then mixed. The mixed ingredients are then sent to the all electric melting furnace via a computer-controlled conveyer.

The center of the all electric melting furnace is about 1600℃. The ingredients for the heatproof glass only melts at extremely high temperatures. The glass itself can act as a conductor inside the furnace and about 20 tons of glass can be melted per day.

Blowing air into the glass, spinning it, and putting it into a mold, the machine produces an average of 25 products per minute.

Put softened glass onto a mold and press into shape by plunger mold.

The lehr (annealing furnace) heats the glass up to 620℃ and then slowly cools it, which removes the stressses that are developed. Removing these stresses makes the next processing step easier.

Machine work
Once in the finishing steps, the product is processed based on the different categories using a computer-controlled chill cut machine that adjusts the size and shape of the glass.

Watch machines process connections between parts and workers add spouts and handles by hand.

Products that have been processed have designs and marks printed on them using a color auto-printer.

The prints are then baked onto the products with a baking furnace called a decorating lehr. The products are then dried.

Handles, lids and other accessories are attached by hand before the product is packaged.