Invention Application
- Patent Title: PROCESS TO MANUFACTURE LOW WEIGHT HIGH QUALITY PAPER FOR USE AS A SUPPORT LAYER OF A RELEASE LINER WITH A BELT ASSEMBLY
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Application No.: US15510843Application Date: 2014-09-15
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Publication No.: US20170284024A1Publication Date: 2017-10-05
- Inventor: Jukka Kotilainen , Jussi Leinonen , Janne Antila , Jari Tamminen
- Applicant: UPM Specialty Papers Oy
- International Application: PCT/FI2014/050702 WO 20140915
- Main IPC: D21F3/04
- IPC: D21F3/04 ; D21H27/00 ; D21G1/00 ; D21F5/00 ; D21H19/10

Abstract:
The invention relates to manufacturing low weight high quality paper suitable for use as a support layer of a release liner. A paper web is formed from pulp slurry, the moisture content of the paper web is reduced by a press section (PSEC), the paper web is supported by a belt (BELT1) from a first contact point (CP1) in the press section (PSEC) to a first separation point (SP1) in a drying section (DSEC), and the paper web is dried to form paper. The temperature profile of the paper web may be non-decreasing. When supported, the temperature of the paper web of the paper web may be higher than or equal to 56° C. to obtain a paper web having a dry content of at least 40 wt.-% at the first separation point.
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