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US 2003/0201086 A1Published application
Belt for calendering
AssigneeIchikawa Co., Ltd.
InventorsNorio Sakuma, Yasuhiro Tsutsumi, Kazumasa Watanabe
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AssigneeIchikawa Co., Ltd.
InventorsNorio Sakuma, Yasuhiro Tsutsumi, Kazumasa Watanabe
Estimating the term…
A relatively low-cost calendering belt having excellent heat resistance and durability comprises a central portion 30, and left and right side portions 20 located at the sides of the central portion. The right and left portions 20 comprise high molecular weight elastic material having greater heat resistance than that of the central portion 30. The central portion 30 is composed of high-molecular elastic material, the durability of which is higher than that of the right and left portions 20. The heat of the calender roll CR is intercepted by a paper W, and consequently is not transmitted to the central portion 30 of the calender belt. The right and left portions 20 of the calender belt, which are not protected by paper W do not deteriorate readily as a result of the heat of the calender roll CR because of their heat resisting property.
An endless calendering belt for use in a calendering apparatus for paper manufacture in which a pressurizing part is composed of a pressing means and a heated calender roller, the belt comprising a main central portion, and right and left portions located along the right and left sides of the main central portion, said right and left portions comprising high molecular weight elastic material with heat resistance greater than the heat resistance of the main central portion, and said main central portion comprising high molecular weight elastic material having durability higher than the durability of the right and left portions.
Dependencies are inferred from the claim text.