Title:
GLASS CLOTH
Document Type and Number:
WIPO Patent Application WO/2021/090756
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a low-mass glass cloth that, even when impregnated with a resin solution to produce a prepreg that contains, by mass, a low proportion of the glass cloth, can particularly effectively suppress the occurrence of pinholes and longitudinal wrinkles. A glass cloth that has a mass of no more than 10.0 g/m2. The design value Iwd for the gaps between adjacent warp threads is no more than 95 μm, and the design value Ifd for the gaps between adjacent weft threads is no more than 95 μm. The ratio (Iw/If) of the actual value (Iw) of the gaps between adjacent warp threads and the actual value (If) of the gaps between adjacent weft threads is 1.23–1.45. The basket hole area fraction is 12.0%–20.0%.
Inventors:
HATTORI KOHJI (JP)
NISHINAKA DAISUKE (JP)
NISHINAKA DAISUKE (JP)
Application Number:
PCT/JP2020/040613
Publication Date:
May 14, 2021
Filing Date:
October 29, 2020
Export Citation:
Assignee:
UNITIKA LTD (JP)
UNITIKA GLASS FIBER CO LTD (JP)
UNITIKA GLASS FIBER CO LTD (JP)
International Classes:
D03D15/267; C08J5/24; D03D1/00
Domestic Patent References:
| WO2019163159A1 | 2019-08-29 |
Foreign References:
| JP2017043873A | 2017-03-02 | |||
| JP2019104996A | 2019-06-27 | |||
| JP2009263824A | 2009-11-12 | |||
| JP2006063489A | 2006-03-09 | |||
| JP2019019431A | 2019-02-07 |
Attorney, Agent or Firm:
TANAKA, Junya et al. (JP)
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