Process and apparatus for producing coated single twist glass yarns
US4853021A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 1987 |
| Grant date | Aug 1, 1989 |
| Priority date | — |
| Expiry date | Dec 2, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C25/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for producing coated, single twist glass yarns which comprises drawing a plurality of fibers formed from fibers of molten glass, applying to the fibers a sizing comprising a thermoplastic, thermosetting or photosetting composition, gathering the coated fibers into a yarn, imparting a continuous rotative twisting movement to the coated yarn and curing the coated yarn so as to polymerize and/or crosslink the sizing coating. An apparatus for performing this process comprises a spinneret having a plurality of nozzles or orifices from which fibers of molten glass are discharged; means for drawing a plurality of glass fibers from the spinneret; at least one coating applicator for applying the sizing coating to the glass fibers; guide means for gathering the coated fibers into a yarn; means for imparting a single twist to the coated yarn, such as a strap spindle device and means for curing the sizing coating wherein the coating is crosslinked and/or polymerized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.