Patent ID: 6301932
Filing Date: 2001-10-16
Classification: C03B,H01J

Abstract:
A method for forming internally channeled glass envelope comprising the steps of:(a) delivering and depositing a leading end of a molten glass ribbon to a surface of a mold having a mold cavity to form a first length of molten glass, said mold possessing at least one channel-forming groove and a peripheral surface wherein the molten glass ribbon overlies the mold cavity and the peripheral surface;(b) causing the first length to substantially conform to the contour of the mold cavity thereby forming at least one channel in the first length of the molten glass ribbon;(c) delivering and depositing a trailing end of said molten glass ribbon to the exposed surface of the earlier deposited first length to form a second length of the molten glass ribbon on said first length of molten glass, such that the second length of glass ribbon is folded over the first length of glass ribbon.