- 专利标题: POLYURETHANE ROLL COVER FOR CALENDER ROLL FOR PAPERMAKING MACHINE
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申请号: US15339977申请日: 2016-11-01
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公开(公告)号: US20170137997A1公开(公告)日: 2017-05-18
- 发明人: Jun Xu , Christopher Hill , Christopher Tyson , Charles Hunter
- 申请人: Stowe Woodward Licensco, LLC
- 主分类号: D21G1/02
- IPC分类号: D21G1/02 ; B32B5/02 ; B32B27/40
摘要:
A calender roll for a papermaking machine includes: a substantially cylindrical core; and a cover circumferentially surrounding the core. The cover comprises: a base layer circumferentially overlying the core; and a topstock layer comprising polyurethane circumferentially overlying the base layer, the topstock layer being fiber-reinforced, the polyurethane having a glass transition temperature of between about 120 and 150° C., the topstock layer having a hardness of 70 to 90 ShD.
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