公开(公告)号：US20240026609A1

公开(公告)日：2024-01-25

申请号：US18223104

申请日：2023-07-18

申请人： MIQUEL Y COSTAS & MIQUEL, S.A.

发明人： Agustín Tosas Fuentes ,  Mónica Ferreró Aragonés ,  Marcel Alemany Munné ,  Pablo De Mariscal Ruigómez

IPC分类号： D21H15/06 ,  D21H17/26 ,  D21H27/08 ,  A24D3/10 ,  A24D3/06

CPC分类号： D21H15/06 ,  D21H17/26 ,  D21H27/08 ,  A24D3/10 ,  A24D3/063

摘要： The object of the invention is a filter paper characterized in that it includes between 70% and 100% by weight of cellulose fibers, wherein between 50% and 75% by weight of the fibers are long fibers, understanding by this fibers that have an average length greater than 2 mm, and between 25% and 50% by weight of the fibers are short fibers, understanding by this fibers that have an average length of less than 2 mm; between 0.1% and 5.0% by weight of sodium carboxymethyl cellulose; and wherein the weight of the filter paper per unit area is between 25 and 55 g/m2, measured according to UNE-EN ISO 536:2013 standard; the density thereof varies between 0.100 and 0.500 g/cm3, measured according to UNE-EN ISO 534:2012 standard in a single sheet; and the porosity of the filter paper is between 1500 and 8500 ml/min·cm2·kPa, measured according to UNE-EN ISO 2965:2019 standard. The paper filter including said filter paper is also an object of the invention.