Method and apparatus for curtain coating
    1.
    发明授权
    Method and apparatus for curtain coating 失效
    帘式涂布方法和装置

    公开(公告)号:US5976630A

    公开(公告)日:1999-11-02

    申请号:US939617

    申请日:1997-09-29

    摘要: A method and apparatus for preventing vortical air flow behind a free-falling curtain in a curtain coating apparatus. There is a critical region within the coating apparatus defined in part by a coating hopper, the free-falling curtain delivered from the coating hopper, a portion of the moving substrate supported on a roller to which the free-falling curtain is delivered, and an air shield located between the roller and the coating hopper. A first intake slot proximate to the moving substrate shield is used to remove boundary-layer air entrained on the moving substrate. A second intake slot positioned within the critical region is used to remove boundary-layer air entrained on the free-falling curtain. Each of the two intake slots is connected to vacuum source. One or two vacuum sources may be used.

    摘要翻译: 一种用于防止涡流气流在帘式涂布装置中自由落下的幕后的方法和装置。 在涂覆装置内有一个关键区域,部分由涂料斗定义,自动落下的窗帘从涂料料斗输送,移动的基板的一部分支撑在自由落下的窗帘送到的辊子上, 空气屏蔽位于辊和涂料斗之间。 靠近移动的基板屏蔽的第一进气槽用于去除夹带在移动的基板上的边界层空气。 定位在临界区域内的第二进气槽用于去除夹带在自由落下的帘幕上的边界层空气。 两个进气口中的每一个都连接到真空源。 可以使用一个或两个真空源。

    Liquid passage system for photographic coating devices
    2.
    发明授权
    Liquid passage system for photographic coating devices 失效
    液体通道系统用于照相涂布装置

    公开(公告)号:US5405442A

    公开(公告)日:1995-04-11

    申请号:US166680

    申请日:1993-11-15

    IPC分类号: B05C5/00 B05C9/06 G03C1/74

    摘要: The present invention relates to a coating hopper for applying one or more layers of photographic liquid onto a web of paper or film support. The device incorporates a liquid passage system with a metering slot of defined width which leads to an expansion section having an increasing width as liquid moves away from the metering slot. The expansion section is connected to a discharge slot having a defined width greater than that of the metering slot which delivers photographic liquid to a location on the coating device where a layer of that liquid is formed.

    摘要翻译: 本发明涉及一种用于将一层或多层照相液体施加到纸或薄膜载体网上的涂料料斗。 该装置包括具有限定宽度的计量槽的液体通道系统,其导致随着液体远离计量槽而移动的膨胀部分具有增加的宽度。 膨胀部分连接到具有大于计量槽的限定宽度的排放槽,其将照相液体输送到涂覆装置上形成该液体层的位置。

    Liquid distribution system for photographic coating device
    3.
    发明授权
    Liquid distribution system for photographic coating device 失效
    用于摄影涂层装置的液体分配系统

    公开(公告)号:US5234500A

    公开(公告)日:1993-08-10

    申请号:US766945

    申请日:1991-09-27

    IPC分类号: B05C5/00 B05C9/06 G03C1/74

    摘要: The present invention relates to a fluid conditioning system having a primary distribution channel configured to distribute coating fluid transversely. Fluid from the primary distribution channel is carried by a second conduit to a secondary distribution channel which is configured to minimize transverse pressure gradients in fluids having Reynolds Numbers of up to 50 without substantial formation of eddies. A product conduit withdraws liquid from the secondary distribution channel. This fluid conditioning system is particularly useful in applying photographic liquids to a web of photographic film or paper. For this utility, the system can be incorporated in a conventional slide hopper between adjacent layering plates or the liquid-applying plate and its adjacent layering plate.