Device for producing paper webs coated on both sides
    52.
    发明授权
    Device for producing paper webs coated on both sides 失效
    用于生产涂布在两面上的纸幅的装置

    公开(公告)号:US5685909A

    公开(公告)日:1997-11-11

    申请号:US571820

    申请日:1996-03-21

    摘要: Disclosed are a process of and an apparatus for producing paper webs coated on both sides, in particular so-called LWC-papers, in a paper making machine. Firstly, one side of the paper web (1) is coated in a first coating station (8) and then dried. Subsequently, the other side of the paper web (1) is coated in a second coating station (25) and then dried. Each coating station (8, 25) includes an application role (10), an opposing roll (11) and an application unit (13) arranged on the application roll for indirectly coating the paper web. The metering of the coating mass on the application roll (10) takes place by means of a smooth roll doctor. The coated paper web (1) is calendered by means of an on-line calendering unit (60).

    摘要翻译: PCT No.PCT / EP95 / 01627 Sec。 371日期1996年3月21日 102(e)1996年3月21日PCT PCT 1995年4月28日PCT公布。 第WO95 / 30049号公报 日期1995年11月9日公开了一种在造纸机上生产纸幅的方法和设备,特别是所谓的LWC纸。 首先,将纸幅(1)的一面涂覆在第一涂布台(8)中,然后干燥。 随后,将纸幅(1)的另一侧涂覆在第二涂布台(25)中,然后干燥。 每个涂布站(8,25)包括施加作用(10),布置在施加辊上的相对辊(11)和施加单元(13),用于间接涂覆纸幅。 涂布辊(10)上的涂层质量的计量通过光滑辊刮刀进行。 涂布纸幅(1)通过在线压延单元(60)压延。

    Squeegee assembly
    59.
    发明授权
    Squeegee assembly 失效
    刮胶组件

    公开(公告)号:US5524537A

    公开(公告)日:1996-06-11

    申请号:US326183

    申请日:1994-10-19

    摘要: Squeegee assembly, in particular intended for coating an substantially cylindrical object, such as metal, seamless screen printing cylinders, with a liquid or pasty material, at least comprising two substantially annular squeegees arranged at a distance from each other, between which squeegees material metering means open out for metering a material to be applied to the object to be coated; which squeegees can form part of a wall which is resilient, at least in places, of an annular squeegee pressure chamber, which is provided with pressure fluid supply means, while an annular material-supply chamber may be present in the squeegee pressure chamber which is provided with openings which open out between the squeegees, and also comprises a material supply which can be connected to a material source.

    摘要翻译: 刮刀组件,特别是用于涂覆基本上圆柱形的物体,例如具有液体或糊状材料的金属无缝丝网印刷滚筒,至少包括彼此间隔一定距离设置的两个基本上环形的刮板,刮板材料计量装置 打开用于计量要施加到待涂覆物体的材料; 这些刮板可以形成至少在具有压力流体供给装置的环形刮板压力室中的弹性的壁的一部分,同时环形材料供应室可存在于刮板压力室中 设置有在刮板之间打开的开口,并且还包括能够连接到材料源的材料供应。

    Coating device for traveling webs
    60.
    发明授权
    Coating device for traveling webs 失效
    行走幅材涂装装置

    公开(公告)号:US5366551A

    公开(公告)日:1994-11-22

    申请号:US881512

    申请日:1992-05-12

    申请人: Cyrus K. Aidun

    发明人: Cyrus K. Aidun

    IPC分类号: B05C3/18 D21H23/36 D05C5/00

    CPC分类号: B05C3/18 D21H23/36

    摘要: The present invention is directed to a coating device for application of coating material to the surface of a web or a flexible substrate. The coating device contains a pressurized channel where a flowing stream of the coating liquid first comes into contact with the substrate. The coating liquid enters the channel at the upstream side and wets the substrate as it flows in the same direction as the substrate. A doctor element is positioned at the downstream side of the channel where the excess coating in the channel follows the contour of the boundary formed by the doctor element and leaves the channel. The geometry of the streamlined boundaries of the coating device eliminate the formation of recirculating eddies or vortices. The elimination of vortices eliminates flow instability due to centrifugal forces and removes harmful pressure fluctuations which could result in coat-weight nonuniformities. The elimination of recirculating eddies or vortices also removes the possibility of entrapping air pockets or air bubbles in the core of the vortices which could reach the blade gap and could result in coat-weight nonuniformities and wet streaks.

    摘要翻译: 本发明涉及一种用于将涂料施加到幅材或柔性基底的表面上的涂覆装置。 涂覆装置包含加压通道,其中涂覆液体的流动流首先与基底接触。 涂料液体在上游侧进入通道,并在与基材相同的方向流动时润湿基材。 刮刀元件位于通道的下游侧,其中通道中的多余涂层遵循由刮刀元件形成的边界的轮廓并离开通道。 涂层装置的流线型边界的几何形状消除了循环涡流或涡流的形成。 消除涡流消除了由于离心力引起的流动不稳定性,并消除了可能导致涂层重量不均匀性的有害的压力波动。 消除再循环漩涡或涡流也消除了可能到达叶片间隙的涡流核心中的气泡或气泡的可能性,并且可能导致涂层重量不均匀性和湿条纹。