Improving the quality of glass containers production with plunger process control

The production of glass containers is a very complex and demanding procedure which has to be very well equipped and optimally adjusted in order to produce glass containers that satisfy even the most demanding customers, at the same time being competitive on the market. Glass containers have to be maximally light, as well as less expensive, and at the same time they have to withstand maximal mechanical loads, greater internal pressure, thermal shocks (pasteurization), etc. For the glass containers to be able to meet these requirements, apart from a well designed container it is necessary to achieve also excellent glass distribution (uniform thickness of glass container wall), which can be achieved by the production procedure of NNPB (narrow neck press and blow process). The paper shows how the control system of the pressing procedure on glass machines achieves greater stability of glass gob masses, contributing also to improved quality of glass containers and increased production lines productivity. A comparison has been made, namely, of the production lines that are equipped with the system for controlling the pressing procedure WISEPPC (wireless sensor plunger position control) and those that are not.