Device and a process for coarsely grinding hydrous polymer gels
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United States of America Patent
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Jan 2, 2007
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N/A
app pub date -
May 20, 1996
filing date -
May 20, 1996
priority date (Note) -
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Abstract
The present invention relates to a device for crushing a hydrous polymer jelly, comprising two rolls (11,12) located axially parallel and rotating in opposite directions between which a nip (13) for the passage of the polymer gel (10) is formed. In order to achieve a more uniform and cheaper size reduction of polymer gels, the present invention proposes to form one roll as a cutting roll (11) which is provided with at least one axially extending cross cutting element (15) having a cutting edge (17) and with a radially extending longitudinal cutting element (14) provided with a cutting edge (18) which runs around it, and to form the other roll as a back-up roll (12).
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