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.
Leukoplakia is an abnormal white area or spots on the mucous membrane lining the mouth with no clear cause. There are many conditions that present with white areas, such as thrush and lichen planus. White spots may also be caused by irritation, such as biting the cheek or lip.