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Patent Searching and Data


Title:
GLASS DIRECT ROVING PRODUCTION METHOD AND GLASS DIRECT ROVING
Document Type and Number:
WIPO Patent Application WO/2021/075109
Kind Code:
A1
Abstract:
Provided is a method for producing a glass direct roving, which has excellent workability and with which it is possible to effectively increase the mechanical strength of a composite material in the case of a resin-based composite. This glass direct roving production method for producing a glass direct roving 10 by directly winding a bundle of glass filaments comprises: a step in which the surface of a plurality of glass filaments are coated with a bundling agent containing an epoxy resin having an epoxy equivalent weight of 180-240, and the plurality of glass filaments are bundled; a step in which the bundle obtained by bundling the plurality of glass filaments is wound to produce a wound body; and a step in which the bundling agent is heated and dried at a temperature of 135-155°C, and a film is formed on the surface of the glass filaments.

Inventors:
KUNITOMO AKIRA (JP)
Application Number:
PCT/JP2020/027629
Publication Date:
April 22, 2021
Filing Date:
July 16, 2020
Export Citation:
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Assignee:
NIPPON ELECTRIC GLASS CO (JP)
International Classes:
C03C25/36; C03C25/002; C03C25/64; D06M15/55; D06M15/70; D06M101/00
Attorney, Agent or Firm:
MIYAZAKI & METSUGI (JP)
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