Coating apparatus with vacuum biased doctor blade
    3.
    发明授权
    Coating apparatus with vacuum biased doctor blade 失效
    带真空偏压刮刀的涂布设备

    公开(公告)号:US4257343A

    公开(公告)日:1981-03-24

    申请号:US7636

    申请日:1979-01-29

    申请人: Mats O. Kullander

    发明人: Mats O. Kullander

    CPC分类号: D21H23/00 B05C3/18 D21H5/0005

    摘要: In coating a strip of material, such as web of paper, it is passed over a support member forming one of the enclosing surfaces of a closed chamber. The closed chamber is arranged to operate under vacuum conditions. Coating liquid is supplied in excess to the closed chamber to form a layer on the surface of the strip. At the end of the coating action, as the strip leaves the closed chamber, it is contacted by a movably positionable blade which provides a wiping-off action on the strip so as to remove the excess of coating liquid from the strip. The vacuum inside the closed chamber urges the blade against the strip. Therefore, it is possible, by varying the vacuum, to vary the amount of coating liquid adhering to the strip leaving the closed chamber.

    摘要翻译: 在涂覆一条材料条(例如纸幅)时,其通过形成封闭室的封闭表面中的一个的支撑构件。 封闭室设置为在真空条件下运行。 将涂布液过多地供给到封闭室中,以在该带的表面上形成一层。 在涂层动作结束时,当条带离开封闭室时,它被可移动定位的刀片接触,该刀片在条带上提供擦拭作用,以便从条带中除去过量的涂覆液体。 封闭室内的真空将叶片推向条带。 因此,可以通过改变真空来改变附着在离开封闭室的条带上的涂布液的量。