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    • 7. 发明授权
    • Wet pressed paper web and method of making the same
    • 湿压纸网和制作相同的方法
    • US5637194A
    • 1997-06-10
    • US358661
    • 1994-12-19
    • Robert S. AmpulskiAlbert H. SawdaiPaul D. Trokhan
    • Robert S. AmpulskiAlbert H. SawdaiPaul D. Trokhan
    • D21F3/02D21F11/00D21H27/00D21H11/00
    • D21F11/006Y10T428/24455Y10T428/24603
    • The present invention provides a wet pressed paper web. The web has a first relatively high density region having a first thickness K, a second relatively low density region having a second thickness P, which is a local maxima, and a third region extending intermediate the first and second regions. The third region includes a transition region having a third thickness T, which is a local minima. The present invention also provides a method of making a wet pressed web. An embryonic web of papermaking fibers is formed on a foraminous forming member, and transferred to an imprinting member to deflect a portion of the papermaking fibers in the embryonic web into deflection conduits in the imprinting member. The web and the imprinting member are then pressed between first and second dewatering felts in a compression nip to further deflect the papermaking fibers into the deflection conduits in the imprinting member and to remove water from both sides of the web. The imprinting member can have a continuous, monoplanar web contacting surface for molding a wet paper web to have a continuous, relatively high density network and a plurality of relatively low density, discrete domes dispersed through the relatively high density network.
    • 本发明提供一种湿压纸幅。 幅材具有第一相对高密度区域,具有第一厚度K,具有第二厚度P的第二相对低密度区域,其是局部最大值,以及在第一和第二区域之间延伸的第三区域。 第三区域包括具有第三厚度T的过渡区域,其是局部最小值。 本发明还提供一种制造湿压网的方法。 造纸纤维的胚胎网形成在多孔成形构件上,并转移到压印构件以将胚胎网中的一部分造纸纤维偏转到压印构件中的偏转导管中。 然后将卷材和压印构件在压缩压区中在第一和第二脱水毡之间被挤压,以进一步将造纸纤维偏转到压印构件中的偏转导管中,并从网的两侧除去水。 压印构件可以具有连续的单平面接触表面,用于模制湿纸幅以具有连续的,相对高密度的网络和分散在相对高密度网络中的多个相对低密度的离散圆顶。
    • 8. 发明授权
    • Process for applying chemical papermaking additives from a thin film to
tissue paper
    • 将化学造纸添加剂从薄膜应用于薄纸的方法
    • US5246545A
    • 1993-09-21
    • US936161
    • 1992-08-27
    • Robert S. AmpulskiPaul D. Trokhan
    • Robert S. AmpulskiPaul D. Trokhan
    • D21H17/00D21H19/14D21H21/18D21H21/22D21H23/56
    • D21H21/18D21H17/00D21H19/14D21H21/22D21H23/56
    • Disclosed is a process for making soft tissue paper which includes providing a dry tissue web and then applying a sufficient amount of a chemical papermaking additive from a thin film to the dry web. The chemical papermaking additives are added to the surface of the tissue paper to enhance properties of the paper such as strength, softener, absorbency, and/or aesthetics. The chemical papermaking additive application process includes the steps of diluting the chemical papermaking additive with a suitable solvent, applying the diluted chemical solution to a heated transfer surface, evaporating the solvent from the dilute solution to form a film, and then transferring the film to the tissue by contacting the dry tissue web with the heated transfer surface. Preferably, the tissue web is dried to a moisture level below its equilibrium moisture content before application of the papermaking additive.
    • 公开了一种制备软棉纸的方法,其包括提供干燥的纸幅,然后将足量的化学造纸添加剂从薄膜施加到干燥幅材上。 将化学造纸添加剂添加到薄纸的表面以增强纸张的性能,例如强度,柔软剂,吸收性和/或美观性。 化学造纸添加剂的应用过程包括用合适的溶剂稀释化学造纸添加剂的步骤,将稀释的化学溶液施加到加热的转移表面,从稀溶液中蒸发溶剂以形成膜,然后将膜转移到 通过使干纸幅与加热的转印表面接触来进行组织。 优选地,在施用造纸添加剂之前,将组织网干燥至低于其平衡水分含量的水分含量。