Invention Application
- Patent Title: FIBROUS WEB OF PAPER OR BOARD AND METHOD OF MAKING THE SAME
- Patent Title (中): 纤维网或纸板及其制造方法
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Application No.: PCT/FI2013/050460Application Date: 2013-04-24
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Publication No.: WO2013160553A1Publication Date: 2013-10-31
- Inventor: HEISKANEN, Isto , KINNUNEN, Karita , HJELT, Tuomo
- Applicant: STORA ENSO OYJ
- Applicant Address: P.O. Box 309 FI-00101 Helsinki FI
- Assignee: STORA ENSO OYJ
- Current Assignee: STORA ENSO OYJ
- Current Assignee Address: P.O. Box 309 FI-00101 Helsinki FI
- Agency: BERGGREN OY AB
- Priority: FI20125462 20120426
- Main IPC: D21H11/18
- IPC: D21H11/18 ; D21F11/00 ; B32B29/02 ; D21H21/24 ; D21H21/56
Abstract:
The invention relates to a fibrous web product such as paper, and a method for the preparation of such fibrous web. According to the method microfibrillated cellulose (MFC) together with a pulp of a greater fibre length, such as chemithermomechanical pulp (CTMP), are mixed with a foam of water and a sur- factant, the foam is supplied to a forming fabric of a paper or board machine, dewatered by suction of air through the forming fabric, and dried to the final web product. The method brings a high bulk in combination with a high Scott bond value, to provide improved wet and dry tensile strength for the paper and board products.
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