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    • 6. 发明授权
    • Sheet registration device
    • 纸张登记装置
    • US5468834A
    • 1995-11-21
    • US767711
    • 1991-09-30
    • Robert N. FinsterwalderRichard L. CarlstonEdward L. Schlueter, Jr.Lucille M. Sharf
    • Robert N. FinsterwalderRichard L. CarlstonEdward L. Schlueter, Jr.Lucille M. Sharf
    • B65H9/10C08G18/48C08G18/66C08G18/32
    • C08G18/6677B65H9/106C08G18/4854
    • A sheet registration device including a hub having an axis of rotation and a plurality of resilient plastic blades arranged in radial planes passing through said axis and extending in the direction of said axis beyond one end of the hub towards sheet-engaging tips lying in a common plane normal to said axis said blade being made of a polyurethane elastomer obtained by the reaction of a polytetramethylene ether glycol having the formula HO[(CH.sub.2).sub.4 O].sub.n H where n is from 8 to 41, preferably 39 to 41, and from about 20 to about 95 parts preferably 22 to 26 parts by weight per 100 parts by weight of said glycol of a diisocyanate selected from the group consisting of diphenylmethane diisocyanates, toluene diisocyanates, naphthalene diisocyanates and blends thereof and a sufficient amount of cross linking agents to provide a crosslinked elastomer, said cross linking agents comprising a mixture of from about 75% to 60% by weight of a diol having the formula: HO(R.sub.1) OH where R.sub.1 is a straight or branched chain alkyl group having from 2 to 12 carbon atoms and from about 25% to 40% by weight of a triol having the formula: R'--C--[(OH).sub.a (CH.sub.2 OH).sub.b ] where R' is H,CH.sub.3 or C.sub.2 H.sub.5,a is 0 or 1, b is 2 or 3 and a+b=3.
    • 一种纸张对准装置,包括具有旋转轴线的轮毂和多个弹性塑料叶片,该多个弹性塑料叶片布置在穿过所述轴线的径向平面中,并且沿所述轴线的方向延伸超过轮毂的一端朝向位于共同的板材接合尖端 与所述轴垂直的平面,所述刀片由聚氨酯弹性体制成,所述聚氨酯弹性体通过具有式HO [(CH 2)4 O] n H的聚四亚甲基醚二醇反应而获得,其中n为8至41,优选为39至41, 至约95重量份,优选22-26重量份,相对于每100重量份选自二苯基甲烷二异氰酸酯,甲苯二异氰酸酯,萘二异氰酸酯及其共混物的二异氰酸酯,和足量的交联剂, 交联弹性体,所述交联剂包含约75%至60%重量的具有下式的二醇的混合物:HO(R 1)OH,其中R 1是直链或支链 具有2至12个碳原子的直链烷基和约25至40重量%的具有下式的三元醇:R'-C - [(OH)a(CH2OH)b]其中R'是H,CH3或 C2H5,a为0或1,b为2或3,a + b = 3。