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Title:
PRODUCTION OF OPTICAL TRANSMISSION BODY MADE OF SYNTHETIC RESIN
Document Type and Number:
Japanese Patent JPS62258405
Kind Code:
A
Abstract:

PURPOSE: To stabilize production by bleeding liquid from a nozzle consisting of a porous material in an outlet part of a molded pipe.

CONSTITUTION: A prepolymer 7 past a heating jacket 2 controlled by high-temp. water 10 and low-temp. water 11 to a suitable temp. gradient is continuously molded to a transparent gel-like base material 8 having the compsn. uniform in the radial direction and self-shape retentivity by a thermal polymn. A sealing liquid 12 in the jacket 4 bleeds to the molded nozzle 13 made of the porous material in the outlet part of the molded pipe 3 and enters the spacing between the inside wall of the nozzle and the prepolymer 7, thus acting as a lubricating material to prevent the stagnation of the previously geled prepolymer 7. Since the spacing between the nozzle 13 and the base material 8 is sealed by a sealing liquid 12, the diffusion of the diffusive material to the base material 8 under the formation is prevented. The production is thereby stabilized without generating ruggedness on the surface of the base material 8 and without rupturing the base material.


Inventors:
WATANABE YUKINORI
MAEDA KOICHI
TAGO IKUO
Application Number:
JP10153686A
Publication Date:
November 10, 1987
Filing Date:
May 01, 1986
Export Citation:
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Assignee:
NIPPON SHEET GLASS CO LTD
International Classes:
G02B6/00; B29D11/00; G02B3/00; G02B6/028; (IPC1-7): B29D11/00; G02B6/00
Attorney, Agent or Firm:
Masaru Tsuchiya



 
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