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    APPARATUS AND METHOD FOR PRODUCING OPTICAL FIBER
    1.
    发明专利
    APPARATUS AND METHOD FOR PRODUCING OPTICAL FIBER 失效

    公开(公告)号：JPH0274904A

    公开(公告)日：1990-03-14

    申请号：JP22795788

    申请日：1988-09-12

    Applicant: TORAY INDUSTRIES

    Inventor： TANEICHI SEISHIRO ,  KUBOTA HIDEMASA ,  HOKARI NAOTO

    IPC: G02B6/00

    Abstract: PURPOSE:To suppress the intrusion of contminants into a polymn. chamber and to produce a polymer having excellent light transmission performance stably on an industrial scale over a long period of time by introducing an inert gas into the chamber from an inflow port and passing the gas through the chamber and labyrinth section. CONSTITUTION:A mechanical seal 3 for shaft sealing of stirring vanes is provided to the upper part of a vapor phase section 2 and the stirring vanes are installed with the mechanical seal 3 as a fulcrum in the polymn. chamber. The inert gas selected from any one kind of nitrogen, argon, ammonia, carbon dioxide, and oxygen is admitted between the mechanical seal 3 and the polymn. chamber vapor phase section 2. The inert gas flowing down from the inert gas inflow port 4 to the vapor phase section 2 is held at 1cm/sec to 1m/sec linear velocity in the labyrinth section 6 and is discharged to the outside of the polymn. chamber by an inert gas discharge port 7. The shaft sealing function of the stirring vanes is stably maintained over a long period of time in this way and the polymer having high transparency is obtd. while prohibiting the intrusion of the external contaminants and the disturbance or reaction.

    UNIT FOR MICROCARRIER CULTIVATION
    8.
    发明专利
    UNIT FOR MICROCARRIER CULTIVATION 失效

    公开(公告)号：JPS575689A

    公开(公告)日：1982-01-12

    申请号：JP7911780

    申请日：1980-06-13

    Applicant: TORAY INDUSTRIES

    Inventor： KUBOTA HIDEMASA ,  KIZAKI TAKAFUMI

    IPC: C12M3/02

    Abstract: PURPOSE:A porous diaphragm is set at the lower part of the cultivation tank to conduct the exchange of culture medium and washing of the cells and microcarriers in a short time efficiently. CONSTITUTION:The porous diaphragm 8 is demountably set at the lower part of the cultivation tank 1 by means of, e.g., the flange 9 or the like. The stopping valve 11 and the draining nozzle 6 are provided on the bottom side of the diaphragm 8. The porous diaphragm permits liquids such as the culture medium to pass through but not the microcarriers and is required not to elute the components inhibiting the cell growth.

    WASHING METHOD OF CELL
    9.
    发明专利
    WASHING METHOD OF CELL 失效

    公开(公告)号：JPS572682A

    公开(公告)日：1982-01-08

    申请号：JP7545880

    申请日：1980-06-06

    Applicant: TORAY INDUSTRIES

    Inventor： KUBOTA HIDEMASA ,  IIZUKA MASAHIKO ,  KIZAKI TAKAFUMI

    IPC: C12N5/02 ,  C12N5/00 ,  C12N5/07 ,  C12N5/071 ,  C12P21/00 ,  C12R1/91

    Abstract: PURPOSE:To prevent the peeling of cells from a microcarrier surface in washing thereof, by washing the cells grown on the microcarrier surface with an aqueous solution of a salt containing a nonproteinic water-soluble high polymeric substance. CONSTITUTION:Cells grown on a microcarrier surface are washed with an aqueous solution of a salt adjusted to a suitable osmotic pressure. In the process, a nonproteinic water-soluble high polymeric substance, e.g. dextran, methyl cellulose or polyvinyl pyrrolidone, in an amount in the range of 0.0001-1wt%, preferably 0.001-0.1wt%, is added to the aqueous solution.

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