About Glass

Glass Manufacturing

Like treacle, glass is fluid at high temperature and its fluidity decreases as the temperature is reduced.  In other words, its viscosity decreases as the temperature increases.  Unlike water, which turns from a liquid to a solid at a specific temperature, glass has no specific melting or freezing point, but is gradually changed from a stiff solid to a liquid mass as the temperature is increased.  It is this property of “variable viscosity,” which is used in forming a mass of glass into articles of beauty or utility. 

The different methods for forming a variety of different types of glasses either by hand forming, or machine forming, are described in the pages within this section:

​Further information about secondary processes, such as the processes of annealing, toughening, coating and decoration are described in detail on the secondary glass processing page.

For information about the different types of glass produced, please see our types of glass section.

  • 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 different methods of manufacturing glass in our information section" credits="n/a" >

In this Section


About Glass



 
 

Many glass making terms have entered the language: 'Shut yer gob': a molten lump of glass is called a 'gob' to which the glass blower attached a tube to blow the glass into shape. The blower had to blow hard which made his cheeks very large. Today someone with a big mouth is told they have a big gob.


British Glass - Twitter

@SaintGobainUK named British Glass’ Company of 2017 at #gfawards17 For a clear commitment to continuous improvement… https://t.co/EAy0MCBsL7

RT @FriendsGlassUK We are very excited to announce that our #RecyclingHero Leeds campaign was a huge success 😀 https://t.co/kq6smQU9fe htt…

RT @FeveEU The container #glass industry is committed to keeping its #environmental impact low. Learn more: https://t.co/8Ils0RKPjx #FEVE4…

RT @SG_GlassExperts Proud winners of both British Glass’ Company of the Year & Apprentice of the Year at the #gfawards17 @BritGlass @Glass…