Title:
GLASS CLOTH, PREPREG, AND PRINT WIRING BOARD
Document Type and Number:
Japanese Patent JP2023129459
Kind Code:
A
Abstract:
To provide a glass cloth, which is excellent in handling performance with less corrugation during prepreg coating, has resin impregnation property, allows a resin layer to be uniform on front and rear sides of the grass cloth, and has thickness of 16 μm or less, and a prepreg using the glass cloth, and a substrate for print wiring board.SOLUTION: A glass cloth is formed by weaving warp and weft that are glass yarns made of a plurality of glass filaments and has thickness of 8 μm or more and 16 μm or less. Average mass per unit length of the warp is 1.40×10-6 kg/m or more and below 1.80×10-6 kg/m. Average mass per unit length of the weft is 1.80×10-6 kg/m or more and 4.00×10-6 kg/m or less. Ratio of the average mass per unit length of the weft to the average mass per unit length of the warp (weft/warp ratio) is more than 1.20 and 1.80 or less.SELECTED DRAWING: None
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Inventors:
KAKIZAKI HIROTAKA
ENDO MASAO
ENDO MASAO
Application Number:
JP2023113147A
Publication Date:
September 14, 2023
Filing Date:
July 10, 2023
Export Citation:
Assignee:
ASAHI KASEI CORP
International Classes:
D03D15/267; C08J5/08; D03D1/00; H05K1/03
Attorney, Agent or Firm:
Yoshiyuki Inaba
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito
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