ANSI/SPI B151。20-2013（R2018）规定了安全要求，包括塑料板生产机械制造商和用户的风险评估程序，包括用于塑料加工的多辊日历，涉及日历，包括固定在框架上的所有组件。本标准的目的是识别和解决在机器上或机器附近工作的人员的已知危险。

ANSI/SPI B151.20-2013 (R2018) provides safety requirements, including risk assessment procedures for manufacturers and users of plastic sheet production machinery, including multi-roll calendars intended for the processing of plastics and concerns the calendar including all components fixed to the frame. The purpose of this standard is to identify and address known hazards to personnel working on, or adjacent to the machinery.