3. Composition of the sealant mix
3.1 Constituents
Standard glasses for food packaging are obtained from different combinations of three families of main constituents, namely :
vitreux network trainers ;
fluxes ;
stabilizers.
We also find :
refining (elimination of small gas bubbles within the glass);
colorants (iron chromite, nickel oxide, cobalt oxide, etc.);
bleaches (cobalt, selenium, etc.);
Reducers (coke, slag) ;
or oxidizing agents.
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Composition of the sealant mix
Packaging glass manufacturing
Bibliography
Books and magazines
Regulations
Regulation (EC) no. 1935/2004 of October 27, 2004, materials and articles brought or intended to be brought into contact with foodstuffs.
Standards and norms
- Machines et installations pour la production, le façonnage et la transformation de verre creux - NF EN 13042 -
- Management de l'hygiène dans la fabrication des emballages destinés aux denrées alimentaires - NF EN 15593 -
- Récipients en verre, fabrication et vocabulaire - ISO 7348 - 1992
- Récipients en verre, résistance à la pression interne - ISO 7458 - 2004
- Récipients en verre. Résistance...
Directories
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Food packaging glass manufacturing
• Verre on Line, the French glass portal http://www.verreonline.fr
• Glass Industries Federation http://www.fedeverre.fr
• French Federation of Glass Professionals...
Statistical and economic data
History of hollow glass
There are many different types of natural glass:
space: the result of meteorites, and among these tektites is the glass known as libyque;
atmospheric: the result of lightning action: fulgurites ;
animal: skeleton of certain sponges ;
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