Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1988-10-03
1990-01-16
Kellogg, Arthur
Glass manufacturing
Processes
Forming product or preform from molten glass
65 12, 65 13, C03C 2502
Patent
active
048940780
ABSTRACT:
In a method for producing an optical fiber having a resin coating, an optical fiber which is drawn from a preform for an optical fiber heated and melt by a heating source can be effectively cooled before it is coated with a resin by cooling the drawn fiber by cooling gas in such a manner that, in a first plane which is perpendicular to an axis of the drawn fiber or a first conical surface which has a cone point on the axis of the drawn fiber, the cooling gas is blown against the fiber from one direction on said first plane or said first cone surface, and in a second plane which is perpendicular to the axis of the drawn fiber and apart from said first plane or a second conical surface which has a cone point on the axis of the drawn fiber and is apart from said first conical surface, the cooling gas is blown against the fiber from other direction on said second plane or said second conical surface so that a sum of components of all vectors of the cooling gas in x and y dimensions in the three-dimensional space with a z dimension in the drawn fiber direction is substantially zero (0) where a length and a direction of the vector are represented by a flow rate and a direction of the cooling gas, respectively.
REFERENCES:
patent: 3912478 (1975-10-01), Presby
patent: 4028081 (1977-06-01), Marcatili
patent: 4664689 (1987-05-01), Davis
Sakamoto Katsuji
Takimoto Hiroaki
Kellogg Arthur
Sumitomo Electric Industries Ltd.
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