首页>
外国专利>
A paper or paper board appointed roll, a method of manufacturing the roll, and the coating composition for roll
A paper or paper board appointed roll, a method of manufacturing the roll, and the coating composition for roll
展开▼
机译:纸或纸板指定的卷,该卷的制造方法以及该卷的涂料组合物
展开▼
页面导航
摘要
著录项
相似文献
摘要
The invention concerns a roll for use in the manufacture of paper and board, a press roll, in particular a centre roll in a press, a backup roll for an extended-nip press roll, a hot press roll, or equivalent, which is in direct contact with a wet paper web, or a calender roll, a method for manufacture of the roll. and a composition of coating for the roll. Onto the frame part (1) of the roll, first an adhesion layer (2) is applied, and then a ceramic layer (3) of a thickness of 100...2000 mu m. which contains 50...95 % of Cr2O3 and 3...50 % of TiO2, or Al2O3 and ZrO2, or Al2TiO5, and the roughness Ra of the outer face of the roll is 0.4...2.0 mu m, and the porosity of the outer face of the roll is 1...20 %. Besides, or in stead of, TiO2, the ceramic layer (3) may also contain oxides of aluminum, silicon, zirconium, magnesium, manganese, tin, or tungsten or mixtures of same. IMAGE
展开▼