Method for producing a composite glass body with drawing of concentric melts
US5364432A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 9, 1993 |
| Grant date | Nov 15, 1994 |
| Priority date | — |
| Expiry date | Apr 9, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S65/09
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for producing an elongated composite glass body by melting at least two starting materials of different material compositions, feeding the starting materials to a drawing die disposed at the bottom of an externally heated melting crucible, and continuously drawing the melts vertically out of the drawing die to form a composite body laminated transverse to the drawing direction. To provide an interface free from impurities between the starting materials in the composite body and to enable the path of the interface to be freely shaped, the starting materials are fed in particle form continuously to a single melting crucible and heaped therein to form a preformed body in which one starting material lies directly next to the other starting material forming an interface line therebetween that extends substantially vertically and parallel to the drawing direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.