平板玻璃的正反面

你知道平板玻璃也有正反面嗎?要分辨平板玻璃的正反面,首先要瞭解它的製造過程!
浮式明板玻璃的製造過程是將玻璃膏經控制閘門進入錫槽,由於地心引力及本身表面張力作用浮於熔融錫表面上後,再進入徐冷槽,使玻璃兩面平滑均勻,波紋消失而製成。
所以正面為空氣接觸面,反面稱為錫面。

如何在一片平板玻璃上分辦出它的正反呢?
一般用肉眼是看不出來的,需用專屬的儀器來檢測,最簡單的方式就是直接用手觸摸,空氣接觸面觸感順滑順,錫面摸起來會有澀澀的感覺。

那為何要分辨玻璃的正反面?
在一般普通的玻璃工程上是不須分辦的,因為玻璃的正反面對一般消費者而言,使用上並無太大的區別,肉眼無法辨識,所以可能連一般的玻璃工程行都不會去注意這方面的問題,可是對我們窯燒玻璃而言,對一些的作品及釉料的顏色上就會產生影響,尤其以白色最為明顯。




此為二次燒的盤子,因上層玻璃鍚面直接接觸釉料面,以致於出爐時產生玻璃表面失透變霧而白色釉料也變的較黃。




正面空氣接觸面直接與釉料面結合燒製出來的盤子,色澤與玻璃的亮度是不是有所不同。


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