Innovation and the bottling industry
Wednesday, May 2nd, 2012Glass is already one of the most environmentally friendly packaging products available. It is made from natural raw materials and can be recycled over and over again. But glass manufacturers are actively seeking ways to reduce the environmental impact of glass even further. A key target is to reduce the weight of the empty glass container in order to reduce emissions during transport.
Beatson Clark, a UK-based glass packaging maker, has created a new lightweight 500 ml beer bottle which is almost 30% lighter than the company’s original bottle. As well as reducing the consumption of raw materials and energy during production, the new bottle also reduces production costs. Beatson Clark has designed the bottle with similar dimensions to the previous style, so breweries do not need to make costly changes to their bottling equipment. Designs can be customised to include an embossed company name, logo or other design.
The same lightweight glass can be applied to many other types of glass container including packaging for pharmaceuticals, food, and other beverages such as soft drinks. Many other glass container makers are developing similar products. Reaction from consumers to innovations in glass packaging has already proved to be positive.
Although the weight of glass packaging is an issue, the reality is that most glass is only transported short distances from the factory to the packaging plant. The same is true of recycled glass which is usually collected and processed locally. In some countries, particularly in Europe, recycling rates are extremely high.
The amount of recycled glass available has led Heinz-Glas of Germany to develop glass containers which are made of 100% recycled content. By using renewable energy sources, Heinz-Glass claims to have produced the first zero-emissions glass containers on a commercial scale.
Called New Age Glass, the recycled glass is melted in electric furnaces using energy provided by solar, wind and hydroelectric sources. These energy sources produce no carbon dioxide emissions, although some emissions come from the finishing processes required. By comparison, melting 100 tonnes of raw glass in a gas furnace produces around 81 tonnes of CO2, while melting the same amount of recycled glass in an electric furnace produces just 5 tonnes of CO2.
The physical and chemical properties of New Age Glass are similar to those of new glass in terms of safety, thermal properties, chemical and mechanical resistance, and recyclability. It is guaranteed for use as a packaging material for cosmetics, food and beverages.
The only way to tell the New Age Glass from other glass is the slight colour tint in the glass. There are also some micro-bubbles which are caused by the high viscosity of molten glass. Both colour and bubbles could be reduced, however, these would require the addition of chemicals. Heinz-Glas have therefore decided to keep the glass 100% recycled and pure.
These new products are just some examples of the lightweight glass and more environmentally friendly processes which are being developed by the glass container industry. It underscores the industry’s commitment to make an environmentally friendly product even better!



















