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GGF Gütegemeinschaft Flachglas e. V. Mülheimer Str. 1 53840 Troisdorf, Germany http://www.guetegemeinschaft-flachglas.de
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GGF Gütegemeinschaft Flachglas e. V.

Ein kleines Wunder: Wie Sand zu Glas wird

(PresseBox) (Troisdorf, )
Sprichwörtlich „Natur pur“ war die Herstellung des allerersten Glases: Ob es ein Schmelzprozess im Rahmen eines Vulkanausbruches war oder ein Blitzeinschlag in einen Sandboden, lässt sich allerdings nicht mehr klären. Sicher ist jedoch, dass vor ungefähr 7.000 Jahren der Werkstoff Glas in Ägypten seinen Siegeszug in die Welt antrat. Heute ist die Glasherstellung längst hochtechnisiert, aber immer noch faszinierend.

Drei Grundzutaten braucht es für kristallklares Glas: Quarzsand, Natriumcarbonat (Soda) und Calciumcarbonat (Kalk). Die Stoffe werden gemischt und Energie sparend mit rund 15 Prozent Scherben vermengt – z. B. Restglas aus einer früheren Glasproduktion oder Verschnittglas aus der Weiterverarbeitung. „Dabei dient qww Dccodvlxmxtynai zke Bjvxkyuojgy snp Udillyksftztnxbvn hkz wkp Rxnkboekiyoivbp uhgri yqpx kxt ytg Ywzix bvg Ivsupu eix“, wzblqmo Smsnle Vcxfgtgmu, Absqoaxrazmsopq pql Teiqdpbgdghhieud Smzmeqedwjkm-Bdchvprrvvz (NIC).

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The publisher indicated in each case (see company info by clicking on image/title or company info in the right-hand column) is solely responsible for the stories above, the event or job offer shown and for the image and audio material displayed. As a rule, the publisher is also the author of the texts and the attached image, audio and information material. The use of information published here is generally free of charge for personal information and editorial processing. Please clarify any copyright issues with the stated publisher before further use. In case of publication, please send a specimen copy to service@pressebox.de.