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公开(公告)号：US4512279A
公开(公告)日：1985-04-23
申请号：US501969
申请日：1983-06-10
申请人： Wayne A. Damrau , James C. Gauss
发明人： Wayne A. Damrau , James C. Gauss
IPC分类号： B05C5/02
CPC分类号： D21H23/40 , B05C5/0262 , D21H5/0015
摘要： A method and apparatus for applying a film of liquid pigmented coating material to a moving web of paper at, and between, a low limit of two pounds per ream and a high limit of fifteen pounds per ream. The method and apparatus utilize a reservoir of liquid coating material established between a forward liquid coating material seal and a rearward pneumatically loaded and clamped doctor blade spaced a small distance of a few inches or less from the liquid seal. The reservoir is pressurized in the range of 7 to 150 inches of water so that the coating material is applied under pressure to the moving web and then almost instantaneously wiped by the doctor blade. The reservoir is formed by two relatively movable, sealed members which may be opened for easy cleaning, and may have one or more internal coating material distribution headers at its end opposite the web to uniformly distribute the coating material. A reliable, duplicable adjustment for a movable element forming the front edge of the reservoir is provided to establish and control the liquid seal. End dams are located at the ends of the reservoir between the doctor blade and cut-away portions of the movable element to control undesired outflow of coating material. Further, a pair of such applicators may be arranged on opposite sides of the web to simultaneously coat both sides of the web. In addition, the method and apparatus have other features providing easy adjustment, operation, clean-up, high, low or medium weight coatings better than any single prior device and method, and better lightweight coatings than prior devices and methods.
摘要翻译： 一种用于将液体着色涂层材料膜施加到移动的纸幅上的方法和装置，并且之间的下限为每磅2磅，高达每磅15磅。 该方法和装置利用液体涂覆材料储存器，其建立在前液体涂覆材料密封件和与液体密封件间隔几英寸或更小的小距离的后向气动加载和夹紧的刮刀之间。 储存器在7至150英寸水的范围内被加压，使得涂层材料在压力下施加到移动幅材上，然后几乎被刮刀瞬间擦拭。 储存器由两个相对可移动的密封构件形成，其可以打开以便于清洁，并且在其与纸幅相对的端部处可以具有一个或多个内部涂料分配集管，以均匀地分布涂料。 提供了形成储存器前边缘的可移动元件的可靠的可重复调节，以建立和控制液体密封。 末端坝位于储存器的可移动元件的刮刀和切割部分之间的端部，以控制涂层材料的不期望的流出。 此外，一对这样的施加器可以布置在幅材的相对侧上以同时地覆盖幅材的两侧。 此外，该方法和装置具有其它特征，其比以前的装置和方法更好地提供比任何单一现有装置和方法更好的轻质调整，操作，清理，高，低或中等重量的涂层。
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公开(公告)号：US06352022B1
公开(公告)日：2002-03-05
申请号：US09373470
申请日：1999-08-12
申请人： Ralph L. Lau , Wayne A. Damrau
发明人： Ralph L. Lau , Wayne A. Damrau
IPC分类号： D21G100
CPC分类号： D21G1/006 , D21G1/0066
摘要： Microgloss variations in and microgalvanizing of supercalendered webs of paper are significantly reduced without significant reduction in the super-calendered paper gloss by passing the supercalendered web through a heated soft extended nip calender.
摘要翻译： 通过使超级砑光纤维网通过加热的软延伸压光砑光机，显着降低超级砑光纸幅的微观变化和微电镀，而不会显着降低超压光纸的光泽度。
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3.发明授权Method for applying coating to paper web including successive doctoring steps 失效将涂布施加到纸幅上的方法，包括连续的刮涂步骤
公开(公告)号：US5681618A
公开(公告)日：1997-10-28
申请号：US260488
申请日：1994-06-15
申请人： Wayne A. Damrau , Michael A. Mayer
发明人： Wayne A. Damrau , Michael A. Mayer
CPC分类号： B05C11/041 , B05C5/0245 , D21H17/00 , D21H23/36 , D21H25/10 , B05C3/18
摘要： A method of and apparatus for applying coating liquid to a web of paper traveling over a web supporting surface at speeds of 3,000, 4,000 and more feet per minute to produce a coated web free of streaking and other imperfections comprises apparatus for and the sequential steps of distributing coating liquid in a turbulent state over the supported web through a limited application zone within a very short dwell time of the turbulent liquid on the web; subjecting the coating liquid on the supported web to an initial doctoring by means of a primary doctor blade biased under pressure against the coated web at the rear edge of the application zone to form on the web downstream from the zone a relatively quiescent layer of coating liquid having a wet film thickness sufficiently in excess of the final wet film thickness to accommodate a subsequent final wet film doctoring of the coating liquid on the web; and, at a location downstream and isolated from the application zone, subjecting the relatively quiescent layer of excess coating liquid on the supported web to a final doctoring by means of a final doctor blade biased under pressure against the coated web to remove the excess coating from the web and to level and smooth the coating retained on the web to final wet film thickness and smoothness. The method and apparatus of the present invention produces essentially a constant paper smoothness in relation to web speed at which it was coated and subsequently supercalandered, i.e., smoothness does not decrease at higher web speeds, and produces higher gloss with less decline in gloss at higher web speeds.
摘要翻译： 一种用于将涂布液施加到以每分钟3,000,4,000和更多英尺的速度在纸幅支撑表面上行进的纸幅的产品的方法和装置，以产生没有条纹和其它缺陷的涂布纸，包括以下步骤： 在湍流状态下，在幅材上的湍流液体的非常短的停留时间内，通过有限的施加区域将湍流状态的涂布液分配到所述被支撑的幅材上; 通过在施加区域的后边缘处的压力下被压在涂覆的幅材上的初级刮刀将受载幅材上的涂布液进行初始刮涂，以在该区域的下游形成相对静止的涂布液层 具有足够超过最终湿膜厚度的湿膜厚度以适应随后的最终湿膜上的涂布液在纸幅上的刮涂; 并且在下游并与施用区隔离的位置处，通过在压力下偏压涂覆的幅材的最终刮刀将经过支撑的幅材上的过量涂布液的相对静止层进行最终刮除，以从 并且使保持在幅材上的涂层的平整和平滑化到最终的湿膜厚度和平滑度。 本发明的方法和设备基本上产生了相对于其被涂布并随后被超量化的幅材速度的恒定的纸张光滑度，即，在较高幅材速度下平滑度不降低，并产生更高的光泽度，较高的光泽度下降较少 网速。
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公开(公告)号：US5632815A
公开(公告)日：1997-05-27
申请号：US475704
申请日：1995-06-07
申请人： Wayne A. Damrau , Michael A. Mayer
发明人： Wayne A. Damrau , Michael A. Mayer
CPC分类号： B05C11/041 , B05C5/0245 , D21H17/00 , D21H23/36 , D21H25/10 , B05C3/18
摘要： A method for coating a web with a coating material by applying a metered coating material onto the web and smoothing the applied coating material evenly onto the web with a flexible predoctoring blade. The coating material is applied to the web by the predoctoring blade in the form of a high velocity laminar flow in advance of the predoctoring blade. The coating mix is fed to a stem part of the flexible blade via an exit channel having a narrow opening. The loading of the flexible blade, acting as a smoothing device, is controlled in a cross direction of the web in order to control the cross directional profile of the applied coating web. The feed velocity of the laminar flow is at least one small m/sec.
摘要翻译： 一种通过将计量涂层材料施加到卷筒纸上并用涂布材料涂覆纤维网的方法，并用柔性预取刮刀将涂布的涂料均匀地平整到卷筒纸上。 在预取刮刀之前，涂层材料通过预取刮刀以高速层流的形式施加到幅材上。 涂料混合物通过具有窄开口的出口通道供给到柔性叶片的茎部。 作为平滑装置的柔性叶片的装载被控制在幅材的横向上，以便控制施加的涂布幅材的横向轮廓。 层流的进料速度至少为一小米/秒。
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公开(公告)号：US5436030A
公开(公告)日：1995-07-25
申请号：US241475
申请日：1994-05-12
申请人： Wayne A. Damrau
发明人： Wayne A. Damrau
CPC分类号： D21H23/32 , D21H23/34 , Y10S118/04
摘要： A fountain applicator for applying coating liquid onto a web of paper carried past the applicator, has a coating liquid flow path that includes a curved surface along which a sheet of the coating liquid is flowed to subject the sheet to centrifugal force to cause air entrained in the coating liquid to move away from one side of the sheet that is toward the curved surface, so that the one side is relatively free of entrained air. After being flowed along the curved surface, the sheet of coating liquid is directed toward the web in a free standing jet curtain of coating liquid, to contact the web surface primarily with the one relatively air-free side of the coating liquid sheet to decrease the occurrence of skip coating on the web surface, especially when the web is traveling past the applicator at high speeds. The coating is applied in excess onto the web surface and is metered and leveled to a desired coat weight by a downstream doctor. The downstream doctor may comprise a single metering device, or it may comprise an intermediate metering device followed by a final metering and leveling device.
摘要翻译： 一种喷涂器，用于将涂布液施加到通过涂布器的纸幅上，具有涂布液流动路径，该涂布液流动路径包括弯曲表面，一片涂布液沿着该弯曲表面流动以使片材受到离心力，以引起夹带的空气 涂布液体从片材的朝向弯曲表面的一侧移开，使得一侧相对没有夹带的空气。 沿着弯曲表面流动之后，涂布液体在自由喷涂的涂料液体中被引导到纸幅上，主要与涂布液体片的一个相对空气的一侧接触纸幅表面，以减少 在纸幅表面上发生跳过涂层，特别是当纸幅以高速行驶通过涂布器时。 将涂层过量地涂布在网状物表面上，并通过下游医生进行计量并平整至所需的涂层重量。 下游医生可以包括单个计量装置，或者其可以包括中间计量装置，随后是最终计量和调平装置。
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公开(公告)号：US4369731A
公开(公告)日：1983-01-25
申请号：US298762
申请日：1981-09-02
申请人： Wayne A. Damrau
发明人： Wayne A. Damrau
IPC分类号： B05C5/02
CPC分类号： D21H25/10 , D21H5/0065
摘要： An applicator for applying a film of coating material on a web of moving paper carried through an application zone and having a coater blade for doctoring the material on the web as it exits the zone, includes an internal leveling blade within the application zone. The leveling blade divides the application zone into leading and lagging coating material application chambers, and levels the material applied on the web in the leading chamber as the web moves into the lagging chamber. The leveling blade produces a pressure and shear point of coating material to paper so as to cause coating penetration and filling of voids and valleys in the paper, and the coater blade then levels and meters the film of fresh coating applied on the web in the lagging chamber to complete the process.
摘要翻译： 一种涂布器，用于将涂层材料膜施加在通过施加区域运送的移动纸的幅材上，并具有用于在幅材离开该区域时对该材料进行刮擦的涂布器刀片，该涂布器刀片包括在施加区域内的内部流平刀片。 调平刀将应用区域划分成领先的和滞后的涂料施加室，并且当纸幅移动到滞后室中时，将施加在纸幅上的材料进行分级。 流平刀片将纸张的涂层材料的压力和剪切点产生到纸张上，从而使纸张中的空隙和谷物的涂层渗透和填充，然后涂布机叶片将涂覆在网上的新鲜涂层的膜在滞后 室完成过程。
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公开(公告)号：US06869639B2
公开(公告)日：2005-03-22
申请号：US10261050
申请日：2002-09-30
申请人： Wayne A. Damrau , John F. Bergin
发明人： Wayne A. Damrau , John F. Bergin
摘要： An improved film coater which utilizes one or more coater or applicators to transfer coating to the outer surfaces of at least one more rolls, which in turn transfers the coating from the roll surface to one or more sides of the web for coating paper is disclosed. The coater or applicator includes a smoothing doctor on the web and downstream of the one or more rolls, and may also utilize humidity from one of steam showers or a humidity enclosure to assist smoothing. The web may run in any direction, but preferably runs upwardly from the roll toward the doctor to reduce “film split” droplets effect. The present invention also reduces the fiber rise and arrange peel pattern on the coated web, resulting in a smooth uniform coated paper.
摘要翻译： 公开了一种改进的薄膜涂布机，其利用一个或多个涂布机或涂布器将涂层转印到至少一个以上的辊的外表面上，其又将涂层从辊表面转移到用于涂布纸的幅材的一个或多个侧面。 涂布机或涂布器包括在幅材上的平滑刮刀和一个或多个辊的下游，并且还可以利用来自蒸汽淋浴或湿度外壳之一的湿度来辅助平滑化。 网可以沿任何方向运行，但是优选地从卷朝向医生向上延伸以减少“膜分裂”液滴效应。 本发明还减少了纤维上升并且在涂布的织物上布置了剥离图案，导致光滑均匀的涂布纸。
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公开(公告)号：US6077352A
公开(公告)日：2000-06-20
申请号：US707701
申请日：1996-09-04
CPC分类号： B05C5/0245 , B05C1/0826 , B05C11/041 , D21H23/72 , B05C3/18 , D21H23/32 , D21H25/10
摘要： An assembly having at least three coaters or separate doctor or blade units, all arranged at a single backing roll coating station is provided. At least two of the coater or blade units can be movably positioned for easy operation and servicing of all three units. Additionally, one or more of the coater units may have doctors or blades, and the coater units with blades or blade unit may each be angularly positioned through a range of blade angles to optimize coating operations.
摘要翻译： 提供了一种具有至少三个涂布机或单独的刮刀或刀片单元的组件，其全部布置在单个后辊涂布工位上。 涂布机或刀片单元中的至少两个可以可移动地定位，以便于所有三个单元的操作和维修。 另外，一个或多个涂布机单元可以具有医生或刀片，并且具有刀片或刀片单元的涂布机单元可以每个角度地定位在一定范围的叶片角度以优化涂覆操作。
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公开(公告)号：US5968270A
公开(公告)日：1999-10-19
申请号：US76694
申请日：1998-05-12
申请人： Wayne A. Damrau
发明人： Wayne A. Damrau
CPC分类号： D21H23/36 , D21H23/34 , Y10S118/04
摘要： A fountain applicator for applying coating liquid onto a web of paper carried past the applicator, has a coating liquid flow path that includes a curved surface along which a sheet of the coating liquid is flowed to subject the sheet to centrifugal force to cause air entrained in the coating liquid to move away from one side of the sheet that is toward the curved surface, so that the one side is relatively free of entrained air. After being flowed along the curved surface, the sheet of coating liquid is directed toward the web in a free standing jet curtain of coating liquid, to contact the web surface primarily with the one relatively air-free side of the coating liquid sheet to decrease the occurrence of skip coating on the web surface, especially when the web is traveling past the applicator at high speeds. The coating is applied in excess onto the web surface and is metered and leveled to a desired coat weight by a downstream doctor. The downstream doctor may comprise a single metering device, or it may comprise an intermediate metering device followed by a final metering and leveling device.
摘要翻译： 一种喷涂器，用于将涂布液施加到通过涂布器的纸幅上，具有涂布液流动路径，该涂布液流动路径包括弯曲表面，一片涂布液沿着该弯曲表面流动以使片材受到离心力，以引起夹带的空气 涂布液体从片材的朝向弯曲表面的一侧移开，使得一侧相对没有夹带的空气。 沿着弯曲表面流动之后，涂布液体在自由喷涂的涂料液体中被引导到纸幅上，主要与涂布液体片的一个相对空气的一侧接触纸幅表面，以减少 在纸幅表面上发生跳过涂层，特别是当纸幅以高速行驶通过涂布器时。 将涂层过量地涂布在网状物表面上，并通过下游医生进行计量并平整至所需的涂层重量。 下游医生可以包括单个计量装置，或者其可以包括中间计量装置，随后是最终计量和调平装置。
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10.发明授权Method of applying a film of coating material to a paper web including successive doctoring steps 失效将包覆材料膜涂覆在纸幅上的方法，包括连续的刮涂步骤
公开(公告)号：US5702765A
公开(公告)日：1997-12-30
申请号：US479286
申请日：1995-06-07
申请人： Wayne A. Damrau , Michael A. Mayer
发明人： Wayne A. Damrau , Michael A. Mayer
CPC分类号： B05C11/041 , B05C5/0245 , D21H17/00 , D21H23/36 , D21H25/10 , B05C3/18
摘要： A method and apparatus for applying coating liquid to a web of paper traveling over a web supporting surface at speeds of 3,000 or more feet per minute to produce a coated web free of streaking and other imperfections includes the steps and structural elements for distributing coating liquid onto the supported web through a limited application zone within a short dwell time of the liquid on the web, the web moving through the application zone at a speed that is sufficiently high to create turbulence in the coating liquid being applied to the web, doctoring the coating liquid on the web by biasing a primary doctor against the coated web at the rear edge of the application zone so as to form a layer of coating liquid on the web as the web leaves the application zone, the turbulence in the coating liquid causing machine direction streaks in the layer of the coating liquid as the web leaves the application zone; and, at a location downstream and isolated from the application zone, performing a successive doctoring of excess coating liquid on the supported web by biasing a final doctor blade against the coated web to remove excess coating from the web and to level and smooth the coating retained on the web to a final wet film thickness and smoothness.
摘要翻译： 一种用于将涂布液施加到以每分钟3,000或更多英尺的速度在纸幅支撑表面上行进的纸幅的纸张的方法和装置，以产生没有条纹和其他缺陷的涂布纸，包括用于将涂布液分配到 通过在纸幅上的液体的短停留时间内的受限制的应用区域，纸幅以足够高的速度移动通过施加区域，以在施加到幅材上的涂布液中产生湍流，对涂层进行刮涂 通过在施加区域的后边缘处将初级刮刀偏压在涂布的纸幅上，以在纸幅离开涂布区域时在纸幅上形成涂布液层，涂布液体中的湍流引起机器方向 当纸幅离开涂布区域时涂布液层的条纹; 并且在下游并与施加区隔离的位置处，通过将最终的刮刀偏置在涂布的幅材上以使得从幅材上除去多余的涂层并使保留的涂层水平和平滑 在网上达到最终的湿膜厚度和平滑度。
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