Supercalendar roll with composite cover
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United States of America Patent
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Apr 23, 2002
Grant Date -
N/A
app pub date -
Jul 23, 1998
filing date -
Jul 23, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The bone-hard supercalender roll of the present invention comprises: an elongate shaft having a longitudinal axis; a core layer formed of fibrous material circumferentially covering the shaft; means for compressing the core layer along the shaft longitudinal axis; an intermediate layer circumferentially covering the core layer that comprises a first polymeric resin and a heavy textile material; and an outer layer circumferentially covering the intermediate layer that comprises a second polymeric resin and a reinforcing material. In this configuration, the roll can provide the requisite bone-hard surface for calendering applications, but can do so without the surface denting and marring problems associated with filled rolls and the expense of rolls formed of covered metal cores.
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