Method for control of the curl of paper in the treatment of surface-sized paper, and finishing section of a paper machine
一种表面施胶、造纸机的技术,应用在在处理表面施胶纸时控制纸卷曲及造纸机的整饰部领域,能够解决幅面断裂、幅面强度低等问题,达到增加干燥功率、改进行进性能的效果
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[0048] exist Figure 1 to Figure 8 In , unless otherwise specified, the same reference numerals are used to designate parts corresponding to each other.
[0049] figure 1 is a schematic illustration of an embodiment of the invention in which the web W passes from the front dryer group section (not shown) to the surface sizing section 20, the web W on both sides in the nip between rolls 22, 23 Surface sizing is carried out in which both sides of the web W are wetted by the aqueous surface sizing agent. In this way, a paper web which is dried asymmetrically and tends to curl in the front dryer bank section is treated such that the internal stresses of the paper web are relieved or at least weakened. The surface sizing agent is transferred from the supply device 21 , 24 onto the surface sizing rollers 22 , 23 . The paper web W is then dried in a non-contact manner; the paper web W is first dried by air web drying devices 31, 32 placed on both sides of the paper web. The web t...
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