Supercalendar roll with composite cover
AssigneeSW Paper Inc.
InventorLisa Jones
Life of this patent
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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.
Claims34
A bone-hard supercalender roll, comprising:
- an elongate shaft having a longitudinal axis;
- a core layer formed of fibrous material circumferentially covering said shaft;
- means for compressing said core layer along said shaft longitudinal axis;
- an intermediate layer circumferentially covering said core layer, said intermediate layer comprising a first polymeric resin and a heavy textile material;
- and
- an outer layer circumferentailly covering said intermediate layer, said outer layer comprising a second polymeric resin and a reinforcing material.
A bone-hard supercalender roll, comprising:
- an elongate shaft;
- an intermediate layer circumferentially covering said shaft, said intermediate layer comprising a first polymeric resin and a heavy textile material;
- and
- an outer layer circumferentially covering said intermediate layer, said outer layer comprising a second polymeric resin and a reinforcing material.
A method of manufacturing a bone-hard supercalender roll, comprising:
- providing a compressed fibrous core layer circumferentially covering an elongate shaft;
- applying an intermediate layer to circumferentially cover said core layer, said intermediate layer comprising a first polymeric resin and a heavy textile material;
- and
- applying an outer cover to circumferentially cover said intermediate layer, said outer cover comprising a second polymeric resin and a reinforcing material.
Dependencies are inferred from the claim text.