Glass Cloth and Method of Manufacture
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsHajime ITOKAWA, Yusuke TAGUCHI, Ryunosuke NOMURA, Kazuaki URANAKA
Life of this patent
Estimating the term…
Abstract
In a glass cloth made of glass filaments having a composition which is at least 50 wt % SiO2, the filaments have a diameter that is 0.5 μm or more and less than 3.0 μm. The glass cloth has a thickness of 15 μm or less and a weight of from 0.3 to 10 g/m2.
Claims11
A glass cloth comprising glass having a composition that is at least 50 wt % SiO2, wherein the glass cloth has a filament diameter of 0.5 μm or more and less than 3.0 μm, a thickness of 15 μm or less and a weight of from 0.3 to 10 g/m2.
A method of adjusting the filament diameter of a glass cloth, comprising the step of etching away at least 0.5 μm of the filament diameter by treating the glass cloth with one or more etching solution selected from the group consisting of hydrofluoric acid, aqueous ammonium fluoride, aqueous sodium hydroxide, aqueous potassium hydroxide, aqueous sodium carbonate, ammonia water and alkaline electrolyzed water.
A desizing method comprising the step of etching glass cloth which has a filament diameter of 3.0 μm or more and in which size adheres to filament surfaces so as to remove the size.
Dependencies are inferred from the claim text.