Glass Manufacturing

Glass Blowing

For nearly 2,000 years glass blowing by hand was the main method of forming glass articles. The last few years of the 19th century saw the beginnings of blowing glass by compressed air and the 20th century brought in the revolution of mechanisation. However, glass blowing is still carried out by skilled craftsmen today.

For glass blowing, a hollow blowing-iron or pipe is dipped into a pot containing molten glass and the glass is gathered at the end of the pipe by rotating it, similar to gathering treacle onto a spoon. The collected glass, known as the gather, cools to about 1000°C and is marvered (rolled on an iron slab) to form a parison. The parison is then manipulated by allowing it to elongate, re-heating it and blowing air into it to bring it into a shape that resembles the final article. It is then placed in an iron or wooden mould, which is kept wet by water, and the glass is blown to the final shape of the interior of the mould. There is no contact between the glass and the mould, due to the water which forms a cushion of steam. During the blowing the pipe is rotated continuously, preventing mould joints or other mould imperfections appearing in the glass.

  • British Glass represents the interests of primary glass manufacturers and the glass supply-chain, from raw materials to retail and the end-consumer" credits="n/a" >
  • Modern life would not be possible without glass
    But, what is this amazing substance, where does it come from and how is it made?" credits="n/a" >
  • Find a reputable supplier from our member directory" credits="n/a" >
  • Learn about the different methods of manufacturing glass in our information section" credits="n/a" >
  • Did you know that Glass is 100% recyclable and can be recycled an infinite number of times without loss of quality, strength or functionality?" credits="n/a" >
  • We provide relevant, impartial, and comprehensive advice and information - from leading experts across key legislative areas" credits="n/a" >
  • British Glass represents the interests of primary glass manufacturers and the glass supply-chain, from raw materials to retail and the end-consumer" credits="n/a" >
  • Learn about the amazing material glass" credits="n/a" >
  • British Glass represents the interests of primary glass manufacturers and the glass supply-chain, from raw materials to retail and the end-consumer" credits="n/a" >
  • Our enviromental section goes into more depth on the environmental and energy issues affecting the glass supply chain" credits="n/a" >

British Glass - Twitter

We hosted a forum for glass industry HR leads, focussing on the forthcoming Apprenticeship Levy. Read the article: https://t.co/SU3bfvbeLG

RT @BeatsonClark Thanks to @FoodManufacture for featuring us in their article about glass bottles for craft beers and spirits https://t.co…

Our HR forum w/ @RNNGroup revealed #apprenticeshiplevy offers employers more value than many companies realise. https://t.co/PWJDvCKsxL

RT @SaintGobainUK Ten valuable news resources for construction professionals, from @Isover https://t.co/7xLqY2s8Zd https://t.co/FtLHs13S0a