Process for manufacturing sized glass strands
US5698000A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1994 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | Dec 8, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2964
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a process for manufacturing continuous a glass fiber strand. The process consists in depositing on the glass filaments which are in the process of being drawn a sizing composition of which the solvent content is less than 5 wt % of solvent selected from organic solvent and water, the solution comprising at least 70 wt % of a mixture of constituents which can be polymerized and/or crosslinked by heat treatment, at least 60 wt % of the constituents being constituents of which the molecular weight (Mw) is less than 750, less than 10 weight % being film-forming agents and 0 to 25 weight % being coupling agents, lubricants, stabilizers and initiators and/or catalysts, and in winding the strand or strands, formed by collection of the filaments, on a rotating support so as to form a wound package consisting of turns of strand coated with a non-polymerized sizing composition. The strands are intended to reinforce thermoplastic or thermosetting organic substrates or substances of mineral origin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.