IMPROVED FILTER PAPER
收藏国家林业和草原科学数据中心2023-02-12 更新2024-03-07 收录
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资源简介：
A filter paper is shown for producing an aqueous extract， comprising long-fibre pulp with properties as follows: a basis weight of more than 9.0 g/m2 and less than 13.5 g/m2， a density of more than 280 kg/m3 and less than 350 kg/m3， a roughness of more than 700 ml/min and less than 1300 ml/min， a flexural resistance in machine direction of more than 50 mN and less than 75 mN， and an air permeability of more than 17 000 cm/(min ·kPa) and less than 26 000 cm/(mim ·kPa)， where either the filter paper is free from abacá fibres and sisal fibres or else abacá fibres and/or sisal fibres are present but together make up less than 20% of the paper mass. A filter paper is shown for producing an aqueous extract， comprising long-fibre pulp with properties as follows: a basis weight of more than 9.0 g/m 2 and less than 13.5 g/m2， a density of more than 280 kg/m3 and less than 350 kg/m3， a roughness of more than 700 ml/min and less than 1300 ml/min， a flexural resistance in machine direction of more than 50 mN and less than 75 mN， and an air permeability of more than 17 000 cm/(min ·kPa) and less than 26 000 cm/(mim ·kPa)， where either the filter paper is free from abacá fibres and sisal fibres or else abacá fibres and/or sisal fibres are present but together make up less than 20% of the paper mass.
提供机构：
国家林业和草原科学数据中心
创建时间：
2023-02-12
