Glass Composition

Container glass, known as Soda-Lime-Silica glass is made of naturally occurring abundant raw materials including Silica (Sand 71-75%), Soda (Sodium Carbonate 12-14%) and Limestone (Calcium Carbonate 10 -14%). Once mixed, the raw materials are introduced to the furnace on a continuous basis and melted at temperatures in the region of 1565°C to form molten glass.

The molten glass flows from the furnace and passes through refractory channels where it is refined and cooled to a homogeneous temperature and viscosity. The molten glass is then extruded and cut to form gobs of glass.

Glass Forming

The cut gobs of glass are then delivered into the forming machine where they are moulded to form our containers.

The mixing, melting and forming processes are precisely controlled using sophisticated automatic measuring and control systems.

All our containers are subject to stringent checks; including 100% automatic inspection through a series of mechanical and optical based inspection systems, to assure that a high level of quality is maintained


Glass Inspection

To optimise and ensure consistent quality, we employ sophisticated state of the art contact and non-contact (camera based) inspection machinery, driven by intelligent software to  provide 100% inspection for all shapes and sizes of the glass containers we produce.

Every part of the glass container is subject to inspection, including the sidewall, neck finish and base, ensuring that any defects and imperfections are detected and rejected.

Glass Delivery

The method and quality of the outer packaging is of equal importance to insure that your goods arrive in tip top condition. Glassworks have many years of experience in this exact packing and handling.

We manage all logistical, import and handling processes. All products are carefully shipped and stored in our UK warehouses for call off. Prior to despatch they are carefully inspected before being delivered, often on a just in time basis.


Glassworks International Ltd 
Saffron House, 67 High Street
Saffron Walden, Essex CB10 1AA