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    • 9. 发明授权
    • Pressed paper web and method of making the same
    • 压纸纸和制作相同的方法
    • US5855739A
    • 1999-01-05
    • US839218
    • 1997-04-22
    • Robert Stanley AmpulskiAlbert Heskel SawdaiPaul Dennis Trokhan
    • Robert Stanley AmpulskiAlbert Heskel SawdaiPaul Dennis Trokhan
    • D21F11/00
    • D21F11/006
    • 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。