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研究了涂布纸间的摩擦性能与印刷过程自动送纸环节中出现的双张纸和多张纸所导致的运行故障的关系。在涂料中加入高比例的沉淀碳酸钙(PCC)会增大涂布纸的静态和动态摩擦因数(COF)。体现涂料颗粒大小的微观粗糙度被认为与COF有关,因为立方体型的PCC粒子具有阻滑能力。压光操作对大量添加PCC颜料的涂布纸的COF具有降低作用,但仅用高岭土配方时不会改变COF。添加研磨碳酸钙(GCC)会降低COF。与富含PCC颜料配方的涂布纸相比,富含GCC颜料配方的涂布纸的动态COF随滑动次数增加而降低的程度更加明显,可能是因为GCC型涂料在纸张表面凸出的部分被选择性磨平。丁苯胶乳用量达到14%时会降低COF;用量为18%时,静态COF达到最大值。丁苯胶乳的防滑性能仅仅在静态模式下才能有所体现。在加入润滑剂的配方中,蜡类材料的添加对COF的降低能力最明显,而且,其对动态COF的降低程度大于对静态COF的降低。
The relationship between the friction properties of coated paper and the running faults caused by double sheets and multiple sheets appeared in the automatic feeding process of printing process was studied. Adding a high proportion of precipitated calcium carbonate (PCC) to the coating increases the static and dynamic coefficient of friction (COF) of the coated paper. The micro-roughness, which reflects the particle size of the coating, is considered to be COF-related because cubic PCC particles have slip resistance. Calendering reduced the COF of coated paper with a large amount of PCC pigment addition but did not change the COF with kaolin alone. Adding ground calcium carbonate (GCC) reduces COF. The dynamic COF of coated paper rich in GCC pigment formulations is more pronounced with increasing number of glides than with coated paper with PCC pigment formulations, probably because the portion of the GCC coating projecting on the surface of the paper was Selective smoothing. COF was reduced when SBR latex reached 14%, and maximum static COF was achieved at 18% SBR. Styrene-butadiene latex skid performance only in static mode can be reflected. In addition, the addition of wax material has the most obvious ability to reduce the COF in the lubricant added formulation, and its dynamic COF reduction is greater than that of the static COF.