Invention Grant
- Patent Title: Method of pre-treating woodchips prior to mechanical pulping
- Patent Title (中): 在机械制浆之前预处理木片的方法
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Application No.: US11358594Application Date: 2006-02-21
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Publication No.: US07771565B2Publication Date: 2010-08-10
- Inventor: Ventzislav H. Kirov , Anil Sethy , Bryan L. Sorensen
- Applicant: Ventzislav H. Kirov , Anil Sethy , Bryan L. Sorensen
- Applicant Address: US IL Mundelein
- Assignee: Packaging Corporation of America
- Current Assignee: Packaging Corporation of America
- Current Assignee Address: US IL Mundelein
- Agency: Nixon Peabody LLP
- Main IPC: D21B1/16
- IPC: D21B1/16 ; D21B1/12
Abstract:
A method of making pulp adapted to be used in forming corrugating medium is disclosed. The method comprises cooking woodchips in a first liquor in the absence of an alkali addition. The method further comprises mechanically fiberizing the woodchips to form a pulp. The method further comprises separating hydrolyzate from the pulp. The method further comprises treating the pulp with a second liquor, the second liquor including at least one alkali. The method further comprises refining the pulp.
Public/Granted literature
- US20070193706A1 Method of manufacturing pulp and articles made therefrom Public/Granted day:2007-08-23
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