Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Particular raw cellulosic materials
Reexamination Certificate
2011-08-30
2011-08-30
Hug, Eric (Department: 1741)
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Particular raw cellulosic materials
C131S374000, C131S354000, C131S357000
Reexamination Certificate
active
08007637
ABSTRACT:
This invention relates to a production process of tobacco sheet by papermaking. The technical arrangement of this invention are: (a). to immerge and to extract tobacco stem and leaf scrap respectively by water-soluble solvents to respectively obtain solid tobacco stem and solid leaf scrap, and tobacco stem extract and leaf scrap extract via solid/liquid separation; (b). to defibrilate solid tobacco stem and solid leaf scrap respectively, to mix the obtained tobacco stem fiber and leaf scrap fiber and combined with dust to prepare fiber base; (c). to wholly or partly abnegate the tobacco stem extract obtained by Step (a), and to evaporated and to concentrate other extracts that then are sprayed or immerged to coat the formed fiber base that is then dried, threshed and shaped. The tobacco sheet production process offered by this invention has improved the tobacco sheet's filling capacity and its sensory quality.
REFERENCES:
patent: 720830 (1903-02-01), Marsden
patent: 3415253 (1968-12-01), Michels et al.
patent: 4182349 (1980-01-01), Selke
patent: 4341228 (1982-07-01), Keritsis et al.
patent: 4421126 (1983-12-01), Gellatly
patent: 1033359 (1996-11-01), None
patent: 1140196 (2004-03-01), None
patent: 1565284 (2005-01-01), None
patent: 1565286 (2005-01-01), None
International Search Report ; International Application No. PCT/CN2006/000485.
Written Opinion of the International Searching Authority; International Application No. PCT/CN2006/000485.
English Translation of the Abstract of CN 1565284 (CN 1565284 has previously been submitted).
English Translation of the Abstract of CN 1565286 (CN 1565286 has previously been submitted).
English Translation of the Abstract of CN 1033359C (CN 1033359C has previously been submitted).
English Translation of the Abstract of CN 1140196C (CN 1140196C has previously been submitted).
Chen Gang
Deng Changjian
Fu Jianshan
Liu Jianfu
Tan Xinliang
Beem Patent Law Firm
China Tomacco Hunan Industrial Co. Ltd.
Hug Eric
LandOfFree
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