Title:
GLASS CLOTH, GLASS CLOTH PRODUCTION METHOD, PREPREG, AND PRINTED WIRING BOARD
Document Type and Number:
WIPO Patent Application WO/2023/090272
Kind Code:
A1
Abstract:
This disclosure is glass cloth weaved using, as warp and weft, glass yarn including a plurality of glass filaments, with a surface of the glass cloth treated with a surface treatment agent. The glass cloth includes a predetermined region in which the value obtained from the following formula (1) is more than 0 and 0.14 or less: (E1/T1)/(W1/L1), wherein E1 represents second bending stiffness (N · cm2/cm) per unit length in a curvature range of 0.5 to +1.5 cm-1 when bent twice at a curvature of 2.5 cm-1; T1 represents the thickness (cm) of the region; L1 represents the shooting distance (cm) of the warp; W1 represents the warp width (cm); and bending is performed such that the bottom line of the valley generated through bending follows the direction of the weft.
Inventors:
FUKAYA YUKA (JP)
Application Number:
PCT/JP2022/042124
Publication Date:
May 25, 2023
Filing Date:
November 11, 2022
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
D03D15/267; C08J5/04; D03D1/00; D06B19/00; D06C29/00; D06M11/45; D06M11/79; D06M11/80; D06M13/513; D06M15/233; D06M15/53; D06M15/55; H05K1/03
Foreign References:
| JPS62259811A | 1987-11-12 | |||
| JPH06272163A | 1994-09-27 | |||
| JPH11188728A | 1999-07-13 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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