초록 ▼

A roll comprising a hollow metal core member, an intermediate base layer or layer, and a polyurethane cover, the intermediate base layer compounded to have improved thermal conductivity. The intermediate base layer or layers having improved thermal conductivity function to dissipate heat generated b

A roll comprising a hollow metal core member, an intermediate base layer or layer, and a polyurethane cover, the intermediate base layer compounded to have improved thermal conductivity. The intermediate base layer or layers having improved thermal conductivity function to dissipate heat generated by hysteresis (deformation energy), thereby permitting the rolls to operate at higher roll speeds and higher pressures without roll failure.

대표청구항 ▼

A pressure roll having a flexible outer cover and adapted for cooperative, contacting engagement with another roll to define a nip area at which the outer cover of the pressure roll is deflected by the cooperating roll, said pressure roll comprising: a hollow metal core member having a cylindrical o

A pressure roll having a flexible outer cover and adapted for cooperative, contacting engagement with another roll to define a nip area at which the outer cover of the pressure roll is deflected by the cooperating roll, said pressure roll comprising: a hollow metal core member having a cylindrical outer surface; a flexible outer polyurethane cover overlying the outer cylindrical surface of said core member; and an intermediate base layer interposed between said core member and said cover, said intermediate base layer including a polymeric substance and a thermally conductive material, said polymeric substance selected from the group consisting of thermosetting resins and vulcanized rubbers, said intermediate base layer having a thermal conductivity sufficient to conduct heat buildup from said cover to said core member.