Читать книгу Encyclopedia of Glass Science, Technology, History, and Culture - Группа авторов - Страница 123

The forming of the final container in the blow‐mold is from a mechanical point of view identical for all three forming processes (BB, PB, and NNPB) as explained in Section 3.

As with parison forming at the blank‐side, final blowing at the blow‐side can also be aided by vacuum. A main task for the blow‐mold is to extract as much heat from the container as fast as possible to increase its viscosity, stabilize its shape, and avoid deformations during take‐out and transport of the container after it has been released from the blow‐molds. Because of this need to extract large amounts of heat in a short time, blow‐molds often are made out of aluminum‐bronze, which has much higher heat conductivity than cast‐iron, hence allowing faster heat removal from the container.

A picture of a triple‐gob setup in the color‐section of this Encyclopedia shows the parisons just having arrived at the blow‐side and the final containers just having been removed from the blow‐mold and placed over the dead‐plate by the take‐out.