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    • 3. 发明申请
    • A METHOD FOR CONTROLLING THE ORIENTATION OF FIBERS
    • 一种控制纤维方向的方法
    • WO1995008024A1
    • 1995-03-23
    • PCT/US1994009279
    • 1994-08-17
    • BELOIT TECHNOLOGIES, INC.
    • BELOIT TECHNOLOGIES, INC.SHANDS, Jay, A.
    • D21F01/06
    • D21F1/06D21F1/02D21F1/026
    • The present invention relates to a method for controlling the orientation of fibers within stock (S) flowing through and from a headbox (10) of a papermaking machine. The method includes the steps of generating an excess flow of the stock (12, 13) through edge tubes (14, 16) of a tube bank (18) relative to the flow of stock (S) through the remaining tubes (20, 21) of the tube bank (18). The arrangement is such that excess flow (12, 13) is attained by providing the edge tubes (14, 16) with a cross-machine directional flow area which is greater than the respective cross-machine directional flow area of each of the remainging tubes (20, 21). Stock (22, 24) is bled through the side walls (26, 28) of the headbox (10) adjacent to and downstream relative to the edge tubes (14, 16). The arrangement is such that the bleeding of the stock (22, 24) through the side walls (26, 28) compensates for any tendency for the flow of stock (S) from the respective edge tubes (14, 16) to converge towards each other so that the orientation of the fibers within the stock flowing from the headbox (10) is relatively uniform in a cross-machine direction (CD).
    • 本发明涉及一种用于控制流过造纸机的流浆箱(10)的原料(S)内的纤维取向的方法。 该方法包括以下步骤:通过管组(18)的边缘管(14,16)相对于原料(S)的流动通过剩余的管(20,21)产生过量的原料(12,13) )管组(18)。 这种布置使得通过为边缘管(14,16)提供横跨机器方向流动区域而达到过量流动(12,13),该横向机械流动面积大于每个再生管道的相应跨机器方向流动面积 (20,21)。 通过流浆箱(10)的侧壁(26,28)相对于边缘管(14,16)相邻并且在下游相对于边缘管(14,16)排出库存(22,24)。 这种布置使得原料(22,24)通过侧壁(26,28)的渗出补偿了来自各个边缘管(14,16)的料液(S)流向每个 使得从流浆箱(10)流出的原料中的纤维的取向在横向(CD)上相对均匀。
    • 5. 发明申请
    • A HEADBOX APPARATUS
    • HEADBOX设备
    • WO1993009286A1
    • 1993-05-13
    • PCT/US1992008361
    • 1992-09-30
    • BELOIT TECHNOLOGIES, INC.
    • BELOIT TECHNOLOGIES, INC.HERGERT, Richard, E.
    • D21F01/06
    • D21F1/022D21F1/02D21F1/024D21F1/026D21F1/028D21F1/06
    • A headbox apparatus (10) is disclosed for ejecting stock (S) onto a forming wire (12) for forming a web (W). The apparatus (10) includes a housing (14) which is connected to a pressurized source (P) of the stock (S). The housing (14) defines a tapered inlet (16) for the flow therethrough of the stock (S). The tube bank (18) has an upstream and a downstream end (20, 22) with the upstream end (20) being connected to the tapered inlet (16) such that the stock (S) flows at a substantially constant flow rate through the inlet (16) and through the upstream end (20) of the tube bank (18) to the downstream end (22) of the tube bank (18). The tube bank (18) includes a plurality of tubes (24, 25, 26, 27) for the flow therethrough of the stock (S). A member (28) defines a slice chamber (30) which has an upstream and a downstream extremity (32, 34). The upstream extremity (32) is connected to the downstream end (22) of the tube bank (18), and the downstream extremity (34) is disposed adjacent to the forming wire (12). The arrangement is such that the stock (S) flows through the downstream end (22) of the tube bank (18) and through the upstream extremity (32) of the slice chamber (30) so that the stock (S) is ejected from the downstream extremity (34) of the slice chamber (30) onto the forming wire (12). A plurality of supply conduits (36, 37) are connected to the upstream end (20) of the tube bank (18) with each supply conduit (36, 37) being connected to a stock diluting source (38) for permitting dilution of the stock (S) flowing into the tube bank (18). A control device (40) cooperates with the supply conduits (36, 37) for controlling the dilution of the stock (S) flowing through at least some of the tubes of the tube bank (18) for controlling the cross-machine directional basis weight of the resultant web.