In the glass packaging industry, in order to compete with new packaging materials and containers such as paper containers and plastic bottles, glass bottle and can manufacturers in developed countries have been committed to making their products more reliable, more beautiful in appearance, lower in cost, and cheaper.
In order to achieve these goals, the development trend of foreign glass packaging industry is mainly manifested in the following aspects:
Increase labor productivity
The key to improving the labor productivity of glass bottle manufacturing is how to increase the molding speed of glass bottles. At present, the method generally adopted by developed countries is to choose a molding machine with multiple groups and multiple drops. The large furnace matched with the high-speed molding machine must have the ability to supply a large amount of high-quality glass liquid stably, and the temperature and viscosity of the gob must meet the requirements of the most advanced molding conditions.
Adopt advanced energy-saving technology
Another way to save energy, improve the melting quality, and extend the furnace to save energy is to increase the amount of cullet. The amount of cullet in foreign countries can reach 60%-70%. The most ideal is to use 100% broken glass to achieve the goal of “ecological” glass production.
Increase production concentration
In order to adapt to the severe competition situation caused by the challenges of other new packaging products in the glass packaging industry, a large number of glass packaging manufacturers have begun to merge and reorganize to increase the concentration of the glass container industry in order to optimize resource allocation, increase economies of scale, and reduce disorderly competition. Enhance development capabilities, which has become the current trend of the world’s glass packaging industry.
80% of the glass bottles and cans produced by Obedand in Germany are lightweight disposable bottles. Precise control of raw material composition, precise control of the entire melting process, small mouth pressure blowing technology (NNPB), spraying of hot and cold ends of bottles and cans, online inspection and other advanced technologies are the fundamental guarantee for the realization of lightweight bottles and cans. Some countries are developing new surface enhancement technologies for bottles and cans in an attempt to further reduce the weight of bottles and cans.
For this reason, the composition of raw materials must be very stable. Most of the refined standardized raw materials used by glass bottle manufacturers in developed countries are provided by specialized raw material manufacturers. The thermal parameters of the kiln to ensure the quality of the melting should adopt a digital control system to achieve the ultimate control of the whole process.