Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 2527 - 2536 |
| Number of pages | 10 |
| Journal | Applied Thermal Engineering |
| Volume | 24 |
| Issue number | 17-18 |
| DOIs | |
| Publication status | Published - 2004 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- coated paper
- impingement air drying
- mottle
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The effect of the impingement air drying on print mottle and other coated paper properties. / Rajala, Pasi (Corresponding Author); Milosavljevic, Nenad; Kiiskinen, Harri; Hendrickson, Melissa.
In: Applied Thermal Engineering, Vol. 24, No. 17-18, 2004, p. 2527 - 2536.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - The effect of the impingement air drying on print mottle and other coated paper properties
AU - Rajala, Pasi
AU - Milosavljevic, Nenad
AU - Kiiskinen, Harri
AU - Hendrickson, Melissa
PY - 2004
Y1 - 2004
N2 - The objective of this work is to study the influence of effective initial impingement drying (one-sided high intensity air impingement drying) on the quality of blade-coated paper and to compare it with IR (infrared) drying. A specially designed 1.31 m-long impingement air dryer unit was installed 2 m downstream of the coating station of the pilot coater for more efficient paper drying. Different drying strategies using different combinations of three impingement temperatures (300, 450 and 550 °C) and three impingement velocities (25, 40 and 60 m/s) were tested in the impingement dryer unit to determine the influence of drying on paper quality. Drying effects are compared with those obtained with two rows of an electrical IR at same position. The results of the investigation indicate that backtrap (BT) mottle was reduced with increasing drying power of the impingement dryer. The paper quality parameters, gloss and smoothness of the coated samples were better with air-drying than IR drying. The interesting finding of this study is the improvement of mottle with a high drying rate in the consolidation phase for coated WF (wood-free) paper. Drying section configuration with effective impingement drying unit directly after the coating station showed good performance and is proposed as a possible solution for the future dryer designs.
AB - The objective of this work is to study the influence of effective initial impingement drying (one-sided high intensity air impingement drying) on the quality of blade-coated paper and to compare it with IR (infrared) drying. A specially designed 1.31 m-long impingement air dryer unit was installed 2 m downstream of the coating station of the pilot coater for more efficient paper drying. Different drying strategies using different combinations of three impingement temperatures (300, 450 and 550 °C) and three impingement velocities (25, 40 and 60 m/s) were tested in the impingement dryer unit to determine the influence of drying on paper quality. Drying effects are compared with those obtained with two rows of an electrical IR at same position. The results of the investigation indicate that backtrap (BT) mottle was reduced with increasing drying power of the impingement dryer. The paper quality parameters, gloss and smoothness of the coated samples were better with air-drying than IR drying. The interesting finding of this study is the improvement of mottle with a high drying rate in the consolidation phase for coated WF (wood-free) paper. Drying section configuration with effective impingement drying unit directly after the coating station showed good performance and is proposed as a possible solution for the future dryer designs.
KW - coated paper
KW - impingement air drying
KW - mottle
U2 - 10.1016/j.applthermaleng.2004.03.015
DO - 10.1016/j.applthermaleng.2004.03.015
M3 - Article
VL - 24
SP - 2527
EP - 2536
JO - Applied Thermal Engineering
JF - Applied Thermal Engineering
SN - 1359-4311
IS - 17-18
ER -