Glossary

This coating is typically applied during the production of glass packaging and makes the glass smoother, reducing the risk of damage. The containers slide more easily past each other and along the guide rails of packaging lines. At 100 to 200°C, after the annealing oven, an organic compound is sprayed or vaporized onto the glass. This can be done using a variety of substances, which can be divided into two main groups:

• Water-soluble substances (such as fatty acids). These are removed after one or two rinses of the packaging.
• Water-insoluble substances (such as wax, paraffin, and polyethylene). The drawback of these is that, for example, adhesive from labels adheres poorly to the coated surface.