| CPC D03D 15/267 (2021.01) [B29C 70/22 (2013.01); B29K 2309/08 (2013.01); B29K 2313/00 (2013.01); B29K 2995/0026 (2013.01)] | 5 Claims |
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1. A surface-colored glass cloth comprising:
a glass cloth comprising a warp and a weft, the warp and the weft respectively contain a plurality of bundled glass filaments; and
a plurality of colored portions attached to a surface of the glass cloth,
wherein one colored portion is disposed in each area including one colored point and a plurality of the colored points are arranged on a surface of the glass cloth so that a plurality of rows are formed along a predetermined direction,
wherein an average distance D between the adjacent colored points is 0.50 to 10.00 mm,
wherein when one colored point is a reference colored point and an area around the reference colored point is equally divided into eight areas by four lines extending in directions of 22.5°, 67.5°, 112.5°, and 157.5° in a clockwise manner with respect to the predetermined direction through the reference colored point, D is an average value of distances between the reference colored point and eight colored points adjacent to the reference colored point in each of the eight areas and the reference colored point is selected from the colored points in which the adjacent colored points exist in each of the eight areas,
wherein when a number of warp rows is St, a warp widening degree is Et, a number of weft rows is Sy, and a weft widening degree is Ey in the glass cloth, D, St, Et, Sy, and Ey satisfy the following formula:
3.3≤100×D1/2×(Et×Ey)/(St×Sy)≤25.0,
wherein each of the number of warp rows and the warp widening degree is calculated by the following formulae:
number of warp rows=(width of glass filament constituting warp)×(number of glass filaments constituting warp)/(width of warp); and
warp widening degree=(width of warp)/{25000 μm/(weaving density of warp)},
wherein each of the number of weft rows and the weft widening degree is calculated by the following formulae:
number of weft rows=(width of glass filament constituting weft)×(number of glass filaments constituting weft)/(width of weft); and
weft widening degree=(width of weft)/{25000 μm/(weaving density of weft)},
wherein the weaving density is a number of the warps or wefts per each width of 25 mm of the glass cloth,
wherein St and Sy are 0.8 to 8.0 and Et and Ey are 0.30 to 1.20, and
wherein a width of the glass filament constituting the warp or weft is 3.0 to 11.0 μm, a number of the glass filaments constituting one warp or one weft is 30 to 600, a width of the warp and the weft is 100 to 800 μm, and the weaving density of the warp and the weft is 30 to 120/25 mm.
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