Method for making a layered glass article

Details Method for making a layered glass article Method for making a layered glass article

1986-10-31

1988-11-15

Lacey, David L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65121, 65145, 264 17, C03C 2502, C03B 526, C03B 714, B29D 1100

Patent

active

047846798

ABSTRACT:
Layered glass products such as multilayer glass rods or fibers are formed in a preferably continuous process wherein at least two component glasses are supplied to an annular mixing zone wherein relative movement of the annular surfaces produces spiral layering of the glasses and the formation of a glass product stream having a preselected gradient in composition and glass properties across a diameter thereof.

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patent: 3819350 (1974-06-01), Pellett et al.
patent: 3823995 (1974-07-01), Carpenter
patent: 4118212 (1978-10-01), Aulich et al.
patent: 4145200 (1979-03-01), Yamazaki et al.

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