In the manufacture of flat glass during which at least one surface of the glass is in contact with molten tin, tin ions which have entered the surface layer of the glass are first substituted by hydrogen ions and then at least a proportions of the hydrogen ions are substituted by ions of another element.
Origin
Pilkington Bothers Ltd.
Journal Title
(B.P. 1,207,885, 27.3.68)
Sector
Primary Papers
Class
PP 286