Method for cooling polymeric hydrogel blocks

Details Method for cooling polymeric hydrogel blocks Method for cooling polymeric hydrogel blocks

1979-06-27

1981-01-27

Welsh, Maurice J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

526 62, 526 88, C08L 3326

Patent

active

042474370

ABSTRACT:
In cooling polymeric hydrogel blocks of about 70.degree. to about 110.degree. C. to less than about 70.degree. C., said hydrogel blocks can efficiently be cooled in a short time by feeding them to a screw conveyor with a screw disposed in a horizontal or inclined trough, at least one end of which is blind and which has a discharge opening at the bottom or the side near the other end, and blowing the cooling air against the hydrogel blocks which are being pressed by the rotating screw against the blind end of the trough and lifted upward along the blind wall by the action of the rotary screw and are falling backward on the screw by gravity.

REFERENCES:
patent: 3951600 (1976-04-01), Asano et al.
patent: 3996411 (1976-12-01), Ohshima et al.
patent: 4134871 (1979-01-01), Otani et al.
patent: 4146690 (1979-03-01), Tago et al.

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