aper;Sheffield;Test equipment;Test specimens;Testing;Tests【摘要】: This part of ISO 5636 specifies a method of determining the air flow rate through unit area of a sheet of paper or board, under unit pressure difference using apparatus called the Sheffield instrument.The method is applicable to papers and boards having air permeances between 0,02 μm/(Pa·s) and 25 μm/(Pa·s). The method is not suitable for papers and boards with a rough surface, such as crepe paper and corrugated papers, which cannot be securely clamped to avoid surface leakage.【中国标准分类号】: Y30【国际标准分类号】: 85_060【页数】: 12P;A4【正文语种】: 英语 | 欢迎光临 世界资料网论坛 (http://bbs.infoeach.com/) | Powered by Discuz! X2.5 |