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公开(公告)号：US5505820A
公开(公告)日：1996-04-09
申请号：US371206
申请日：1995-01-11
CPC分类号： D21G1/00
摘要： A paper rawstock web is wet densified on a papermachine at a moisture content greater than about 20% and less than about 50%, and preferably from about 25-35%, in a calender device at nip pressures greater than about 3000 psi, and preferably within the range of from about 3000-6000 psi, to provide fiber springback resistance and irreversibly smooth surfaces which are substantially resistant to loss of smoothness upon rewetting, as for example in a subsequent surface sizing or coating process. Wet densification according to the present invention produces a web having greater density and increased internal bond strength, as compared with webs treated by conventionally known methods, to achieve the irreversibly smooth surfaces.
摘要翻译： 在压纸机装置中，在大于约3000psi的压区压力下，纸张原料纤维网在造纸机上以湿含量大于约20％且小于约50％，优选约25-35％的湿度致密化， 在约3000-6000psi的范围内，以提供光纤回弹电阻和不可逆光滑的表面，其基本上耐再次润湿时的平滑度的损失，例如在随后的表面施胶或涂布过程中。 与通过常规已知方法处理的纤维网相比，根据本发明的湿致密化产生具有更大密度和增加的内部粘结强度的网，以实现不可逆的平滑表面。
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公开(公告)号：US5425851A
公开(公告)日：1995-06-20
申请号：US953254
申请日：1992-09-30
CPC分类号： D21G1/00
摘要： Web offset printing paper having a high level of gloss and smoothness is prepared by finishing a paper web, either by supercalender or with a synthetic roll calender at a moisture content greater than the moisture content typically used for web offset finishing, and then drying the web to a moisture content of less than about 3.5% using convection, radiation or conduction. Under the preferred post-drying conditions, bonding of the previously wet paper fibers takes place to lock in the desirable printing characteristics and to prevent heat roughening on the offset press.
摘要翻译： 通过用超级砑光机或合成辊砑光机来完成纸幅，其水分含量大于通常用于卷筒纸胶印精加工的水分含量，然后干燥纸幅，从而制备具有高水平光泽度和光滑度的胶版印刷纸 使用对流，辐射或传导的水分含量低于约3.5％。 在优选的后干燥条件下，发生先前湿纸纤维的粘合以锁定所需的印刷特性并防止胶印机上的热粗糙化。
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