GLASS CLOTH, PREPREG, AND PRINTED WIRING BOARD
Number of patents in Portfolio can not be more than 2000
United States of America
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Issued Date -
Apr 3, 2025
app pub date -
Jun 1, 2023
filing date -
Jun 1, 2023
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Abstract
Provided is a glass cloth that can reduce a delay time difference of a printed wiring board and for which high productivity can be achieved. In the glass cloth, a glass filament diameter of the warp yarn and the weft yarn is from 0.5 to 4.5 μm, the filament number of each is from 150 to 3000, the weaving density of each is from 1.0 to 50.0 filaments/25 mm, the average yarn width of each is from 550 to 10000 μm, the fiber-opening efficiency coefficient of each is from 0.600 to 1.500, the ratio of the filament number to the filament diameter is from 68.6 to 555.5, the geometric mean of the opening efficiency coefficients of the warp yarn and the weft yarn is from 0.770 to 1.200, and the thickness of the glass cloth is less than 10.0 μm.
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