| 摘要 |
Drying of paper is accomplished by heated, dry air of relatively higher temperature than normally used in paper dryers which is directed under pressure through a restricted orifice across the paper machine width onto and through a porous woven felt and onto and against the wet paper web entrained between the felt and the periphery of a heated dryer drum, thereby creating high, locally induced vapor pressures for inducing a rapid release of the generated vapors. The web is held tightly between the felt and the face of the dryer drum thereby restricting the usual lateral contraction of the web, which contraction results in loss of web width and formation of cockles, streaks and general unevenness in the dried web.
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