Manufacturing...
Process

The process involved in manufacturing glass is a complex one with many intricacies.  The accuracy and precision with which each step is carried out determines the quality and consistency of the final product.
To start with, raw materials comprising mines produced minerals; manufactured chemicals and double washed cullet are checked thoroughly to ensure that they are up to the mark in quality. They are then collected at the batch house, the starting point of the glass manufacturing process. Sourcing of superior raw material, their processing, handling and mixing are crucial in production of quality glass containers.
The raw material for flint glass is sent to the melting furnace from the batch house. SGIPL has ensured an excellent supply source for its inputs and has enabled computer control for the operations in batch house like storage, transport, mixing and charging into furnace.
The mixing passes through three main parts of the furnace – the melter, the refiner and the fore hearth. The melting temperature in the furnace is around 1580 degrees. The molten glass flows through the refiner out along the fore hearth. There, it is carefully cooled to a desired temperature and viscosity.
The molten glass now flows through different channels to the feeder and a shearing device cuts the glass flow as it exits from there. The shearing creates a specific amount of molten glass, known as a gob, which will be formed into individual containers. The gob travels down to the individual section machine (IS Machine) through the gob distributor device.
Industrial Section Machine comprises of multiple, identical forming sections with independently controlled operating variables. The machines are available in several configurations to suit specific production requirements. Each IS machine is capable of producing a wide range of glassware. Production rate depends on the bottle shape & size. The state of the art machines are mechanically automatic controlled to ensure precise process requirements.
While in IS machines, glass is malleable. To change its mechanical properties and make it usable, it is then sent through an annealing lehr. Annealing is a slow cure treatment process, in which glass is exposed to an elevated temperature and slowly cooled to relieve internal stresses.
From the lehr, finished bottles go through multi steps inspection process.  At this juncture SGIPL employs the best equipments, Quality Assurance and well trained sorting staff to carry out the physical property testing of the glass bottles.
Bottles that pass through the above stringent process of quality assurance move to the packing area where customized packing is done as per the requirement of the specific customer. We have facilities for automatic shrink pack or box pack.