Heat transfer roll with separate temperature zones for processing materials

Claim 2

A roll for processing materials and adapted to have separate temperature zones along its outer surface with which the material being processed come into contact, said roll comprising: an outer shell; an inner shell spaced from the outer shell; means between the outer shell and the inner shell for forming separate temperature zones along the outer surface of the outer shell, said means adapted to provide a uniform temperature zone along a predetermined length of the roll, and to provide a temperature gradient zone along the remaining length of the roll; and means for introducing between the inner and outer shells within said uniform temperature zone and withdrawing therefrom a heat exchange medium; and means for introducing a second different temperature heat exchange medium between the inner and outer shells within and at the portion of said temperature gradient zone remote from the uniform temperature zone and means for withdrawing said second heat exchange medium from and at the portion of said temperature gradient zone adjacent said uniform temperature zone.

Claim 3

A roll for processing material and comprising: an outer shell; an inner shell; first means included between the outer and inner shells and establishing along the outer surface of the roll for a predetermined length of the roll a uniform temperature zone; second means included between the outer and inner shells and cooperating with the first means and establishing along the outer surface of the roll for the remaining length of the roll a temperature gradient zone; the first and second means being arranged so that temperature from the unifoRm temperature zone will be conducted in part to the adjacent temperature gradient zone to affect a gradual temperature transition between the uniform temperature zone and the temperature gradient zone; and means for introducing between the inner and outer shells within said uniform temperature zone and withdrawing therefrom a heat exchange medium; and means for introducing a second different temperature heat exchange medium between the inner and outer shells within and at the portion of said temperature gradient zone remote from the uniform temperature zone and means for withdrawing said second heat exchange medium from and at the portion of said temperature gradient zone adjacent said uniform temperature zone zone

Claim 4

A roll for processing material and comprising: an outer shell; an inner shell; first means included between the outer and inner shells and establishing along the outer surface of the roll for a predetermined length of the roll a uniform temperature zone; second means included between the outer and inner shells and cooperating with the first means and establishing along the outer surface of the roll for the remaining length of the roll a temperature gradient zone; the first and second means being arranged so that temperature from the unifoRm temperature zone will be conducted in part to the adjacent temperature gradient zone to affect a gradual temperature transition between the uniform temperature zone and the temperature gradient zone; and means for introducing between the inner and outer shells within said uniform temperature zone and withdrawing therefrom a heat exchange medium; and means for introducing a second different temperature heat exchange medium between the inner and outer shells within and at the portion of said temperature gradient zone remote from the uniform temperature zone and means for withdrawing said second heat exchange medium from and at the portion of said temperature gradient zone adjacent said uniform temperature zone zone

Claim 5

A roll for processing materials and adapted to have separate temperature zones along its outer surface with which the materials being processed come into contact, said roll comprising: an outer shell; an inner shell spaced from the outer shell and defining therebetween a series of channels through which heat transfer mediums may be circulated; one of said channel series being serpentine in configuration beneath the surface of the outer shell, and the other of the channel series being helical in configuration beneath the surface of the outer shell, the serpentine channel series being disposed along a predetermined length of the roll, and the helical channel series being disposed along the remaining length of the roll; and inlet means for introducing the respective heat transfer mediums into the respective channel series and outlet means for said heat transfer mediums to pass out of said channel series, the outlet means from the helical channel series for said heat transfer medium being adjacent the serpentine channel series, whereby the heat transfer medium circulating through the serpentine channel series is of different temperature than the heat transfer medium circulating through the helical channel series.

Claim 6

A roll for processing materials and adapted to have separate temperature zones along its outer surface with which the materials being processed come into contact, said roll comprising: an outer shell; an inner shell spaced from the outer shell and defining therebetween a series of channels through which heat transfer mediums may be circulated; one of said channel series being serpentine in configuration beneath the surface of the outer shell, and the other of the channel series being helical in configuration beneath the surface of the outer shell, the serpentine channel series being disposed along a predetermined length of the roll, and the helical channel series being disposed along the remaining length of the roll; and inlet means for introducing the respective heat transfer mediums into the respective channel series and outlet means for said heat transfer mediums to pass out of said channel series, the outlet means from the helical channel series for said heat transfer medium being adjacent the serpentine channel series, whereby the heat transfer medium circulating through the serpentine channel series is of different temperature than the heat transfer medium circulating through the helical channel series.