Please see below a guide to the glass manufacturing process.
We also offer tailored glass appreciation days at our facility to all of our customers so they can better understand the technical and quality procedures and how best to handle the product on their filling lines.
In addition to the engineering support and glass handling training we offer, customers also have the option of additional technical support for any new products, via an onsite visit by one of our highly experienced team. They will familiarise themselves with the filling line, and look at any ways in which we can offer advice to further improve the handling of the product.
Raw Materials & Batch Mixing
Using an electronically controlled batch plant, accurately weigh and mix the ingredients and supply into the furnace feed hopper.
Achieving the precise proportions is absolutely critical.
Melts at low temperature helping to fuse other ingredients and reduces CO2 emissions
Acts as flux enabling sand to melt at lower temperatures.
Assists its ‘workability’ and improves durability
Melting & Conditioning
Supply the mix to the furnace at a carefully regulated rate, 24 hours a day, 7 days a week, 365 days a year. The furnace must be capable of reaching 1600 degrees centigrade.
Melt and refine the raw materials until they have become a molten, homogeneous mass.
Pass the mixture through a channel (the throat) into the working end.
Extrude molten glass to produce measured gobs and distribute these to the forming machine.
Blow & Blow Method
Press and Blow Method
Coating & Annealing
Place onto conveyor belt for transfer into the lehr. Pass the containers through a ‘hot end’ surface treatment process to apply an external coating to maintain original strength throughout their working life.
Anneal the glass in the lehr by soaking at a constant temperature, then cooling down to room temperature in a controlled manner. This will remove the stresses generated during the forming and cooling of the container. Apply a second surface treatment at the ‘cold end’ of the lehr to improve the containers’ lubricity and resistance to scratching and scuffing.
Rigorously subject every container to a series of quality inspections which include: sidewall and base scans, pressure tests, bore tests, and a check on the flatness of the sealing surface.
Packaging & Distribution
On top of wooden heat-treated pallets, place a plastic membrane as a moisture barrier, along with a cardboard base pad.
Using automatic packing equipment place each layer of glass containers onto prepared pallets. On each layer of containers position a cardboard (or plastic) layer divider. A cardboard lid completes the pallet load.
Apply pallet ticket with a unique barcode and pass to the MSK machine to shrink-wrap the entire pallet. The barcoding is used to track every movement of the pallet through the warehouse, where it will be collected by the haulier for both national and international distribution.