Condebelt Drying of Paper and Paper board for Optiemizing Quality and Production for Many Cpades

Lehtinen, Jukka

doi:10.1080/07373939508917063

Cited by 8 publications

(5 citation statements)

References 1 publication

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“…In this experiments, the temperatures of top and bottom platens were maintained at 160 °C and 80 °C, respectively, and the handsheets was pressed between the two platens at a pressure of 5 bar for 5 sec. The basic principles and technical aspects of the dynamic and static Condebelt machines have been described (Lehtinen 1995a(Lehtinen , b, 1998Lee et al 1999;Schlegel et al 1999;Lee et al 2003). The Condebelt drying has reported advantages in drying rates and strength improvements.…”

Section: Effect Of Restraint High Temperature Dryingmentioning

confidence: 99%

“…The increasing trend of thickness with moisture change for hot press dried and cylinderdried sheets were almost similar. Lehtinen (1995a) pointed out that Condebelt dried paper is able to resist the adverse effects of moisture better than cylinder dried one, which improves the dimensional stability of the web. However, the present experimental results did not show this.…”

Section: Effect Of Restraint High Temperature Dryingmentioning

confidence: 99%

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Influence of fiber composition and drying conditions on the bending stiffness of paper

Ham¹,

Youn

Lee

2020

BioRes

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Changes in thickness, elastic modulus, and bending stiffness were studied for handsheets prepared using different fiber compositions and dried under restraint or unrestraint conditions, when exposed to various humidity conditions. Four sets of experimental studies were carried out to investigate the effect of (1) different amounts of fines (or long fibers), (2) two-ply sheet forming, (3) high temperature restraint press drying, and (4) the use of recycled fibers on the thickness, elastic modulus, and bending stiffness. The results showed that thickness, elastic modulus, and bending stiffness changed depending upon the fiber composition, single or multi-ply forming, drying conditions, and recycling of fibers. Thickness change, restraint drying, and fiber hornification during recycling were the principal factors affecting the bending stiffness in cyclic humidity conditions.

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Section: Effect Of Restraint High Temperature Dryingmentioning

confidence: 99%

Section: Effect Of Restraint High Temperature Dryingmentioning

confidence: 99%

Influence of fiber composition and drying conditions on the bending stiffness of paper

Ham¹,

Youn

Lee

2020

BioRes

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“…The condensate is removed by pressure and suction (de Beer 1998). The benefit of the Condebelt technology is that it has the potential to completely replace the drying section of a conventional paper machine, and has a drying rate 5-15 times higher than conventional methods (Lehtinen 1995).…”

Section: Condensing Belt Drying (Paper-2)mentioning

confidence: 99%

Emerging energy-efficient industrial technologies

Martin¹,

Worrell²,

Ruth³

et al. 2000

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“…Condebelt drying represents one type of press drying, i.e. , drying under pressure and totally restrained [ 11 ]. Drying rates of 100–200 kg/m 2 /h are possible, depending on the process parameters [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Drying of Pigment-Cellulose Nanofibril Substrates

et al. 2014

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A new substrate containing cellulose nanofibrils and inorganic pigment particles has been developed for printed electronics applications. The studied composite structure contains 80% fillers and is mechanically stable and flexible. Before drying, the solids content can be as low as 20% due to the high water binding capacity of the cellulose nanofibrils. We have studied several drying methods and their effects on the substrate properties. The aim is to achieve a tight, smooth surface keeping the drying efficiency simultaneously at a high level. The methods studied include: (1) drying on a hot metal surface; (2) air impingement drying; and (3) hot pressing. Somewhat surprisingly, drying rates measured for the pigment-cellulose nanofibril substrates were quite similar to those for the reference board sheets. Very high dewatering rates were observed for the hot pressing at high moisture contents. The drying method had significant effects on the final substrate properties, especially on short-range surface smoothness. The best smoothness was obtained with a combination of impingement and contact drying. The mechanical properties of the sheets were also affected by the drying method and associated temperature.

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Condebelt Drying of Paper and Paper board for Optiemizing Quality and Production for Many Cpades

Cited by 8 publications

References 1 publication

Influence of fiber composition and drying conditions on the bending stiffness of paper

Influence of fiber composition and drying conditions on the bending stiffness of paper

Emerging energy-efficient industrial technologies

Drying of Pigment-Cellulose Nanofibril Substrates

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