Ferrule and use thereof for cooling a melt spun hollow glass fiber as it emerges from a spinnerette
US4050915A · kind A · utility
10Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1976 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Oct 4, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/217
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improvement in the process of melt spinning thin walled, hollow fibers from relatively low melting glasses results if cooling of the emerging fiber is accomplished by use of a thin layer of gas to transfer heat from the fiber to a ferrule which fits closely to the spinnerette face and the individual fiber. The ferrule incorporates or is in contact with a heat sink and is slotted or segmented so that it may be brought into position around the moving fiber. Thinner walled, more uniform fibers may be spun when this method of cooling is employed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.