Читать книгу Encyclopedia of Glass Science, Technology, History, and Culture - Группа авторов - Страница 113

For cost reasons, glass containers are made out of soda‐lime‐silica glass whenever special constraints do not apply. An exception is, for instance, laboratory ware for which borosilicate glass is used instead (Chapter 7.7). Even though the forming process needs to be adapted to account for the specific properties of each glass type, the principles at work are similar for given kinds of containers. Three different forming processes are applied, namely BB, PB, and NNPB. Their main differences concern blank‐side forming where the parison is made, the subsequent forming steps to make the final container being identical. As a matter of fact, many containers can be produced with more than one process so that there is much overlap between them in terms of product range.