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公开(公告)号：DE69521869T2
公开(公告)日：2002-04-04
申请号：DE69521869
申请日：1995-10-12
Applicant: DAICEL CHEM
Inventor： MATSUMURA HIROYUKI , SHIMAMOTO SYU , SHIBATA TOHRU
Abstract: A tobacco smoke filter material comprises a fibrillated cellulose ester fiber with an average fiber diameter of 15 to 250 mu m and a BET specific surface area of 0.5 to 4.5 m /g. The fibrous cellulose ester content of the material may for example be not less than 20 weight %. The cellulose ester fiber is provided by, for example, extruding a cellulose ester solution from a nozzle (2) into a precipitating agent for the particular cellulose ester and subjecting the extrudate to a shear force. This filter material can be used in the form of, for example, a filament, web or sheet to provide a tobacco smoke filter which assures good smoking qualities and excellent wet disintegratability.
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公开(公告)号：ES2129094T3
公开(公告)日：1999-06-01
申请号：ES94113552
申请日：1994-08-30
Applicant: DAICEL CHEM
Inventor： TSUGAYA HITOSHI , SHIMAMOTO SYU
IPC: A24D3/02 , A24D3/04 , A24D3/08 , A24D3/10 , A24D3/16 , B01J20/24 , C08L101/16 , D21H11/16 , D21H13/06
Abstract: Using a slurry containing a particulate or fibrous cellulose ester and a wood pulp with a Canadian standard freeness of 100 to 800 ml in a ratio of 10/90 to 90/10 (weight %), a tobacco filter material in the form of a sheet having a nonwoven web structure is produced. The slurry may contain a microfibrillated cellulose in a proportion of 0.1 to 10 weight % on a nonvolatile matter basis. The cellulose ester may be a cellulose acetate with a combined acetic acid in the range of 30 to 62%. This tobacco filter material in a sheet form can be applied to a tobacco filter having a high dry strength and, yet, a high degree of wet disintegratability without adversely affecting the smoking quality of tobacco. Thus, the potential environmental pollution is mitigated by the tobacco filter.
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公开(公告)号：DE69527756T2
公开(公告)日：2003-04-10
申请号：DE69527756
申请日：1995-09-22
Applicant: DAICEL CHEM
Inventor： ASAI TANEMI , SHIMAMOTO SYU , MATSUMURA HIROYUKI , SHIBATA TOHRU
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公开(公告)号：DE69520816T2
公开(公告)日：2001-09-13
申请号：DE69520816
申请日：1995-10-10
Applicant: DAICEL CHEM
Inventor： MATSUMURA HIROYUKI , SHIMAMOTO SYU , SHIBATA TOHRU
IPC: A24D3/10
Abstract: A tobacco filter is produced by wrapping up a sheet-like filter material having a web structure and comprising a cellulose ester short staple into a rod-form. As the cellulose ester short staple, a short staple that is non-crimped and/or has a modified cross section where a ratio D1/D2 of a diameter D1 of the circumscribed circle to a diameter D2 of the inscribed circle, each circle being of the cross section, of not less than 2 is used. The short staple includes e.g. a cellulose acetate fiber with an average fiber length of 1 to 10 mm and fineness of 1 to 10 deniers. The short staple may be incorporated with a beaten pulp with a Schopper-Riegler freeness of 20 to 90 DEG SR and/or a binder. The ratio of the short staple to the beaten pulp may for example be about 90/10 to 20/80 (by weight).
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公开(公告)号：AT173889T
公开(公告)日：1998-12-15
申请号：AT94113552
申请日：1994-08-30
Applicant: DAICEL CHEM
Inventor： TSUGAYA HITOSHI , SHIMAMOTO SYU
IPC: A24D3/02 , A24D3/04 , A24D3/08 , A24D3/10 , A24D3/16 , B01J20/24 , C08L101/16 , D21H11/16 , D21H13/06
Abstract: Using a slurry containing a particulate or fibrous cellulose ester and a wood pulp with a Canadian standard freeness of 100 to 800 ml in a ratio of 10/90 to 90/10 (weight %), a tobacco filter material in the form of a sheet having a nonwoven web structure is produced. The slurry may contain a microfibrillated cellulose in a proportion of 0.1 to 10 weight % on a nonvolatile matter basis. The cellulose ester may be a cellulose acetate with a combined acetic acid in the range of 30 to 62%. This tobacco filter material in a sheet form can be applied to a tobacco filter having a high dry strength and, yet, a high degree of wet disintegratability without adversely affecting the smoking quality of tobacco. Thus, the potential environmental pollution is mitigated by the tobacco filter.
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Patent Agency Ranking
公开(公告)号：DE69527756D1
公开(公告)日：2002-09-19
申请号：DE69527756
申请日：1995-09-22
Applicant: DAICEL CHEM
Inventor： ASAI TANEMI , SHIMAMOTO SYU , MATSUMURA HIROYUKI , SHIBATA TOHRU
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公开(公告)号：DE69520816D1
公开(公告)日：2001-06-07
申请号：DE69520816
申请日：1995-10-10
Applicant: DAICEL CHEM
Inventor： MATSUMURA HIROYUKI , SHIMAMOTO SYU , SHIBATA TOHRU
IPC: A24D3/10
Abstract: A tobacco filter is produced by wrapping up a sheet-like filter material having a web structure and comprising a cellulose ester short staple into a rod-form. As the cellulose ester short staple, a short staple that is non-crimped and/or has a modified cross section where a ratio D1/D2 of a diameter D1 of the circumscribed circle to a diameter D2 of the inscribed circle, each circle being of the cross section, of not less than 2 is used. The short staple includes e.g. a cellulose acetate fiber with an average fiber length of 1 to 10 mm and fineness of 1 to 10 deniers. The short staple may be incorporated with a beaten pulp with a Schopper-Riegler freeness of 20 to 90 DEG SR and/or a binder. The ratio of the short staple to the beaten pulp may for example be about 90/10 to 20/80 (by weight).
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公开(公告)号：DK0641525T3
公开(公告)日：1999-06-23
申请号：DK94113552
申请日：1994-08-30
Applicant: DAICEL CHEM
Inventor： TSUGAYA HITOSHI , SHIMAMOTO SYU
IPC: A24D3/02 , A24D3/04 , A24D3/08 , A24D3/10 , A24D3/16 , B01J20/24 , C08L101/16 , D21H11/16 , D21H13/06
Abstract: Using a slurry containing a particulate or fibrous cellulose ester and a wood pulp with a Canadian standard freeness of 100 to 800 ml in a ratio of 10/90 to 90/10 (weight %), a tobacco filter material in the form of a sheet having a nonwoven web structure is produced. The slurry may contain a microfibrillated cellulose in a proportion of 0.1 to 10 weight % on a nonvolatile matter basis. The cellulose ester may be a cellulose acetate with a combined acetic acid in the range of 30 to 62%. This tobacco filter material in a sheet form can be applied to a tobacco filter having a high dry strength and, yet, a high degree of wet disintegratability without adversely affecting the smoking quality of tobacco. Thus, the potential environmental pollution is mitigated by the tobacco filter.
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公开(公告)号：CA2131236A1
公开(公告)日：1995-03-07
申请号：CA2131236
申请日：1994-08-31
Applicant: DAICEL CHEM
Inventor： TSUGAYA HITOSHI , SHIMAMOTO SYU
IPC: A24D3/02 , A24D3/04 , A24D3/08 , A24D3/10 , A24D3/16 , B01J20/24 , C08L101/16 , D21H11/16 , D21H13/06 , A24B3/02
Abstract: Using a slurry containing a particulate or fibrous cellulose ester and a wood pulp with a Canadian standard freeness of 100 to 800 ml in a ratio of 10/90 to 90/10 (weight %), a tobacco filter material in the form of a sheet having a nonwoven web structure is produced. The slurry may contain a microfibrillated cellulose in a proportion of 0.1 to 10 weight % on a nonvolatile matter basis. The cellulose ester may be a cellulose acetate with a combined acetic acid in the range of 30 to 62%. This tobacco filter material in a sheet form can be applied to a tobacco filter having a high dry strength and, yet, a high degree of wet disintegratability without adversely affecting the smoking quality of tobacco. Thus, the potential environmental pollution is mitigated by the tobacco filter.
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公开(公告)号：DE69521869D1
公开(公告)日：2001-08-30
申请号：DE69521869
申请日：1995-10-12
Applicant: DAICEL CHEM
Inventor： MATSUMURA HIROYUKI , SHIMAMOTO SYU , SHIBATA TOHRU
Abstract: A tobacco smoke filter material comprises a fibrillated cellulose ester fiber with an average fiber diameter of 15 to 250 mu m and a BET specific surface area of 0.5 to 4.5 m /g. The fibrous cellulose ester content of the material may for example be not less than 20 weight %. The cellulose ester fiber is provided by, for example, extruding a cellulose ester solution from a nozzle (2) into a precipitating agent for the particular cellulose ester and subjecting the extrudate to a shear force. This filter material can be used in the form of, for example, a filament, web or sheet to provide a tobacco smoke filter which assures good smoking qualities and excellent wet disintegratability.
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