A METHOD TO PRODUCE A FIBROUS PRODUCT COMPRISING MICROFIBRILLATED CELLULOSE
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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A method for the production of a fibrous product from a fibrous web， wherein the method comprises the steps of: -providing a fibrous suspension comprising a microfibrillated cellulose， wherein the content of the microfibrillated cellulose of said suspension is in the range of 60 to 99.9 weight-% based on total dry solid content， -adding an uncharged， amphoteric or weakly cationic polymer having a molecular weight of at least 50000 g/mol to said suspension， -adding an anionic polymer having a molecular weight of at least 00000 g/mol to said suspension to provide a mixture of said microfibrillated cellulose， said uncharged， amphoteric or weakly cationic polymer and said anionic polymer， 1 -providing said mixture to a substrate to form a fibrous web，wherein the amount of uncharged， amphoteric or weakly cationic polymer in said mixture is in the range of 0.1 to 20 kg/metric ton based on total dry solid content and wherein the amount of anionic polymer in said mixture is in the range of 0.01 to 10 kg/metric ton based on total dry 20 solid content; and -dewatering said fibrous web to form a fibrous product. A method for the production of a fibrous product from a fibrous web， wherein the method comprises the steps of: -providing a fibrous suspension comprising a microfibrillated cellulose， wherein the content of the microfibrillated cellulose of said suspension is in the range of 60 to 99.9 weight-% based on total dry solid content， -adding an uncharged， amphoteric or weakly cationic polymer having a molecular weight of at least 50000 g/mol to said suspension， -adding an anionic polymer having a molecular weight of at least 00000 g/mol to said suspension to provide a mixture of said microfibrillated cellulose， said uncharged， amphoteric or weakly cationic polymer and said anionic polymer， 1 -providing said mixture to a substrate to form a fibrous web，wherein the amount of uncharged， amphoteric or weakly cationic polymer in said mixture is in the range of 0.1 to 20 kg/metric ton based on total dry solid content and wherein the amount of anionic polymer in said mixture is in the range of 0.01 to 10 kg/metric ton based on total dry 20 solid content; and -dewatering said fibrous web to form a fibrous product.
提供机构：
国家林业和草原科学数据中心
创建时间：
2023-02-12
