Composition. The most common types of glass fiber used in fiberglass is E-glass, which is alumino-borosilicate glass with less than 1% w/w alkali oxides, mainly used for glass-reinforced plastics.he first type of glass used for fiber was soda lime glass or A-glass (A for the alkali it contains). It is not very resistant to alkali. A new type, E-glass, was formed; this is an alumino-borosilicate glass that is alkali This was the first glass formulation used for continuous filament formation.
White patches are the main symptom of oral hairy leukoplakia. The patches are: White and âcorrugated,â or folded, in appearance. Hairy, hair-like growths come from the folds in the patches. Permanent, you canât remove the patches with a toothbrush or with another oral care tool.
Caused by chronic irritation, leukoplakia is a disorder of the mouthâs mucus membranes. White patches form on the tongue or inside of the mouth over weeks or months. This can also occur on the vulva in females, but for unknown reasons. One type, known as hairy leukoplakia, is a type found primarily in people who have HIV or other types of severe immune deficiency.