Hign End Glass Bottle Maker

Finally, a heat treatment is applied to the finished products to ensure their strength. To remove any thermal stress left in the glass, the bottles are uniformly reheated to 1040°F in a lehr, then gradually cooled to 300°F, in a process that can take from one and a half to four hours depending on the production and the weight of the finished product.

After they come out of the lehr, the bottles receive a final surface treatment, to make the glass surface smoother and reduce the risk of scuffing that could be caused by transportation, conveyor belts and bottling lines.