Glass bottle

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This article is about the type of container. For the musical group, see Glass Bottle (band).
Various vintage Coca Cola bottles.
Various beer bottles
Pharmaceutical bottle

A glass bottle is a bottle created from glass. Glass bottles can vary in size considerably, but are most commonly found in sizes ranging between about 10ml and 5 litres.

History[edit]

The history of man-made glass can be traced back to 5000-3500 BC, from which glass coated objects have been found.[1] The first hollow glass container was made around 1500 BC, when it was produced by coating sand with molten glass. This method was later replaced by the increasingly popular process of glass blowing.[2]

Manufacture and reuse[edit]

Millions of glass bottles are created worldwide every day. It is a highly mechanized process, and bottles in use today are hand blown and created by different processes.[citation needed]

A glass bottle is 100% recyclable with many new bottles containing glass which was created over 20 years ago. Less energy is used in recycling a glass bottle than creating the glass from raw materials, helping the environment.[3] In 2012, 96% of the glass bottles sold in Switzerland were recycled.[4]

Glass bottle manufacturing takes place over several stages. To briefly outline the processes from beginning to end: raw material, melting, forming, annealing, physical inspection, machine & laser inspection, secondary physical inspection, quality control, and finally packing.[5]

Glass bottles are sometimes reinforced through lamination. Laminated safety glass is made by coating a glass surface with a layer of plastic. When a standard glass bottle is dropped, the glass breaks and scatters. When a laminated bottle is dropped, the glass still breaks but the layer of plastic remains intact, keeping the glass pieces together.[1]

Once made, bottles may suffer from internal stresses as a result of unequal, or too rapid cooling. An annealing oven, or 'lehr' is used to cool glass containers slowly to prevent stress and make the bottle stronger.[6] When a glass bottle filled with liquid is dropped or subjected to shock, the water hammer effect may cause hydrodynamic stress, breaking the bottle.[7][8]

See also[edit]

Notes[edit]

  1. ^ a b "Glass Information". Retrieved 2008-10-02. 
  2. ^ "History of Glass". British Glass. Retrieved 20 July 2015. 
  3. ^ "Glass Facts" (PDF). 
  4. ^ http://www.bafu.admin.ch/dokumentation/medieninformation/00962/index.html?lang=fr&msg-id=50084 (page visited on 4 November 2013).
  5. ^ "Glass Manufacturing". Retrieved 2008-11-26. 
  6. ^ "How Glass Bottles are Made". Retrieved 2010-03-09. 
  7. ^ Saitoh, S (1999). "Water hammer breakage of a glass container". International glass journal (Faenza Editrice,). ISSN 1123-5063. 
  8. ^ Brandt RC; Tressler RE (1994). Fractography of Glass. Plenum Press. ISBN 0-306-44880-7. 

Bibliography[edit]

External links[edit]