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    • 13. 发明授权
    • Method and apparatus for stabilizing a moving low-strength sheet
    • 用于稳定移动的低强度片材的方法和装置
    • US6039842A
    • 2000-03-21
    • US46803
    • 1998-03-23
    • Jark C. LauPhilip Sim Lin
    • Jark C. LauPhilip Sim Lin
    • D21F1/38D21G9/00D21G1/02
    • D21F1/38D21G9/0063
    • An apparatus for stabilizing a low-strength sheet having a width and a top surface and moving in a first direction at a rate sufficient to entrain air. The apparatus includes an airfoil adapted to extend along the top surface of the sheet. The airfoil, in turn, includes:a bottom surface adapted to extend along a portion of the top surface of the sheet;a first surface extending a first distance from the bottom surface at a first juncture;a second surface extending a second distance from the bottom surface at a second juncture; anda top surface extending from the first surface at a third juncture to the second surface at a fourth juncture. The first distance in general is less than the second distance. In addition, the apparatus is oriented in a manner such that the portion of the apparatus which first encounters the entrained air is the first surface of the airfoil, and the first and bottom surfaces of the airfoil form an acute angle such that the first surface directs a substantial portion of the entrained air away from the sheet. The apparatus may include a forebody, a passageway, and/or a deflector. Also provided is a method of stabilizing a low-strength sheet which involves passing the sheet under the apparatus described above.
    • 一种用于稳定具有宽度和顶面的低强度片材并且以足以夹带空气的速度在第一方向上移动的装置。 该装置包括适于沿着片材的顶表面延伸的翼型件。 翼型件又包括:底面,其适于沿着片材的顶表面的一部分延伸; 在第一接合处从底表面延伸第一距离的第一表面; 在第二接合处从底表面延伸第二距离的第二表面; 以及在第三接合处从第一表面延伸到第二表面的顶表面。 第一距离一般小于第二距离。 另外,该装置的方向是这样一种方式使得装置首先遇到夹带的空气的部分是翼型件的第一表面,并且翼型件的第一和下表面形成锐角,使得第一表面引导 夹带的空气的大部分远离片材。 该装置可以包括前身,通道和/或偏转器。 还提供了一种使低强度片材稳定的方法,该方法涉及使片材在上述装置下方通过。
    • 14. 发明授权
    • Method for stabilizing a moving low-strength sheet
    • 稳定移动的低强度片材的方法
    • US5888349A
    • 1999-03-30
    • US40598
    • 1998-03-18
    • Jark C. LauPhilip Sim Lin
    • Jark C. LauPhilip Sim Lin
    • D21F1/38D21G9/00B65H20/14
    • D21F1/38D21G9/0063
    • A method of stabilizing a low strength sheet which involves passing the sheet under an apparatus having a width and a top surface and moving in a first direction at a rate sufficient to entrain air. The apparatus includes an airfoil adapted to extend along the top surface of the sheet. The airfoil, in turn, includes:a bottom surface adapted to extend along a portion of the top surface of the sheet;a first surface extending a first distance from the bottom surface at a first juncture;a second surface extending a second distance from the bottom surface at a second juncture; anda top surface extending from the first surface at a third juncture to the second surface at a fourth juncture. The first distance in general is less than the second distance. In addition, the apparatus is oriented in a manner such that the portion of the apparatus which first encounters the entrained air is the first surface of the airfoil, and the first and bottom surfaces of the airfoil form an acute angle such that the first surface directs a substantial portion of the entrained air away from the sheet. The apparatus may include a forebody, a passageway, and/or a deflector.
    • 一种稳定低强度片材的方法,其包括使片材在具有宽度和顶表面的装置下方并且以足以夹带空气的速度在第一方向上移动。 该装置包括适于沿着片材的顶表面延伸的翼型件。 翼型件又包括:底面,其适于沿着片材的顶表面的一部分延伸; 在第一接合处从底表面延伸第一距离的第一表面; 在第二接合处从底表面延伸第二距离的第二表面; 以及在第三接合处从第一表面延伸到第二表面的顶表面。 第一距离一般小于第二距离。 另外,该装置的方向是这样一种方式使得装置首先遇到夹带的空气的部分是翼型件的第一表面,并且翼型件的第一和下表面形成锐角,使得第一表面引导 夹带的空气的大部分远离片材。 该装置可以包括前身,通道和/或偏转器。
    • 19. 发明授权
    • Apparatus for stabilizing a moving low-strength sheet
    • 用于稳定移动的低强度片材的装置
    • US5759352A
    • 1998-06-02
    • US655332
    • 1996-05-24
    • Jark C. LauPhilip Sim Lin
    • Jark C. LauPhilip Sim Lin
    • D21F1/38D21G9/00D21G1/02
    • D21F1/38D21G9/0063
    • An apparatus for stabilizing a low-strength sheet having a width and a top surface and moving in a first direction at a rate sufficient to entrain air. The apparatus includes an airfoil adapted to extend along the top surface of the sheet. The airfoil, in turn, includes: a bottom surface adapted to extend along a portion of the top surface of the sheet; a first surface extending a first distance from the bottom surface at a first juncture; a second surface extending a second distance from the bottom surface at a second juncture; and a top surface extending from the first surface at a third juncture to the second surface at a fourth juncture. The first distance in general is less than the second distance. In addition, the apparatus is oriented in a manner such that the portion of the apparatus which first encounters the entrained air is the first surface of the airfoil, and the first and bottom surfaces of the airfoil form an acute angle such that the first surface directs a substantial portion of the entrained air away from the sheet. The apparatus may include a forebody, a passageway, and/or a deflector.
    • 一种用于稳定具有宽度和顶面的低强度片材并且以足以夹带空气的速度在第一方向上移动的装置。 该装置包括适于沿着片材的顶表面延伸的翼型件。 翼型件又包括:底面,其适于沿着片材的顶表面的一部分延伸; 在第一接合处从底表面延伸第一距离的第一表面; 在第二接合处从底表面延伸第二距离的第二表面; 以及在第三接合处从第一表面延伸到第二表面的顶表面。 第一距离一般小于第二距离。 另外,该装置的方向是这样一种方式使得装置首先遇到夹带的空气的部分是翼型件的第一表面,并且翼型件的第一和下表面形成锐角,使得第一表面引导 夹带的空气的大部分远离片材。 该装置可以包括前身,通道和/或偏转器。
    • 20. 发明授权
    • Filaments, tow, and webs formed by hydraulic spinning
    • 通过液压纺丝形成的丝,丝束和纤维网
    • US5244723A
    • 1993-09-14
    • US818026
    • 1992-01-03
    • Richard A. AndersonJark C. Lau
    • Richard A. AndersonJark C. Lau
    • D01D5/14D04H3/03D04H3/16
    • D01D5/14D04H3/03D04H3/16Y10T428/2976Y10T442/626Y10T442/68
    • A method of forming substantially continuous filaments which involves the steps of (1) extending a molten thermoplastic polymer through a die having a plurality of orifices to give a plurality of substantially continuous filaments; (2) quenching the filaments by contacting them with a quenching fluid having a temperature less than that of the filaments and a zero to high imposed velocity which, if other than zero, has a component which is in a direction other than parallel with the movement of filaments; (3) entraining and drawing the filaments in a nozzle with an attenuating liquid having a linear speed of at least about 400 feet/minute; and (4) collecting the drawn filaments. The filaments have an average diameter in the range of from about 5 to about 75 micrometers and a high variability of filament diameter from filament to filament and along the length of any given filament. In addition, at least some of such filaments are present as filament bundles. Such filaments can be collected as tow or can form the basis of a nonwoven web which is characterized by minimal filament-to-filament fusion bonding. The preferred thermoplastic polymers are polyolefins, with the most preferred polyolefin being polypropylene.
    • 一种形成基本上连续的长丝的方法,其包括以下步骤:(1)使熔融的热塑性聚合物延伸通过具有多个孔的模具,以产生多个基本连续的长丝; (2)通过使其与具有小于丝的温度的淬火流体接触而淬火,并且零到高的施加速度,如果不是零,则具有除了与运动平行的方向以外的分量 的长丝 (3)用具有至少约400英尺/分钟的线速度的衰减液体夹带并在喷嘴中拉丝; 和(4)收集拉丝。 长丝具有在约5至约75微米范围内的平均直径和长丝直径从细丝到长丝以及沿任何给定长丝的长度的高变异性。 此外,这些细丝中的至少一些以丝束形式存在。 这种长丝可以以丝束的形式收集,或者可以形成非织造织物的基础,其特征在于最小的丝 - 丝熔合粘合。 优选的热塑性聚合物是聚烯烃,最优选的聚烯烃是聚丙烯。