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    • 7. 发明授权
    • Coating device
    • 涂装装置
    • US4109611A
    • 1978-08-29
    • US775922
    • 1977-03-09
    • Fritz FahrniAnton Zimmermann
    • Fritz FahrniAnton Zimmermann
    • B05C5/00B05C9/06G03C1/74
    • D21H23/48B05C5/005B05C5/008D21H5/0045G03C1/74B05C9/06G03C2001/7433G03C2001/7466G03C2001/7477Y10S118/04
    • A device for coating a travelling web of material such as photographic paper with a coating liquid includes a means for transporting the web along a path of travel and a coating hopper of the slot or slide type positioned above the path of travel and provided with a pouring lip from which the coating liquid falls freely as a liquid curtain onto the web to be coated. The pouring lip is provided with a rectilinear sharp edge at a distance of 0.7 to 2.5 mm from an imaginary vertical plane in the operative position of the hopper which is at a tangent to the pouring lip at that boundary surface which is on the coating liquid side. By virtue of this sharp edge a straight wetting line, and consequently a very even curtain thickness can be obtained. If the coating hopper is of the slide type whose slide surface is cylindrically curved in the area near the pouring lip the radius of curvature is preferably within the range between 20 and 40 mm, particularly between 25 and 35 mm. The minimum flow rate necessary for maintaining a stable liquid curtain is thereby considerably decreased.
    • 用涂布液涂布诸如照相纸的材料的行进幅材的装置包括用于沿着行进路径传送纸幅的装置和位于行进路径上方的槽或滑动类型的涂料料斗并且具有浇注 涂布液从该液体自如落下到待涂布的卷材上。 倾倒唇缘在料斗的操作位置处与假想的垂直平面的距离为0.7至2.5mm的直线锋利边缘处,该边缘处于与涂覆液体侧上的边界表面处的倾倒唇缘的切线处 。 凭借这个锋利的边缘,可以获得一条直的润湿线,从而获得非常均匀的帘幕厚度。 如果涂料料斗是滑动型,其滑动表面在靠近浇口的区域中是圆柱形弯曲的,则曲率半径优选在20至40mm之间,特别是25至35mm的范围内。 因此,维持稳定的液体帘幕所需的最小流量显着降低。
    • 8. 发明授权
    • No drip suck back units for glue or other liquids either separately installed with or incorporated into no drip suck back liquid applying and control apparatus
    • 没有滴水吸液单元,用于胶水或其他液体,单独安装或并入不滴入吸液回液液体的控制装置
    • US3895748A
    • 1975-07-22
    • US45744774
    • 1974-04-03
    • KLINGENBERG GEORGE R
    • KLINGENBERG GEORGE R
    • B05B7/14B05C11/10F16K23/00B05B1/28
    • F16K23/00B05C11/1002D21H5/0045D21H23/48
    • A separate or incorporated no drip suck back unit for use with a liquid applying apparatus, wherein materials moving relative to the apparatus are selectively spotted, beaded or coated with a liquid, such as glue or plastic, through one or more nozzles, and wherein the no drip suck back unit prevents excess liquid from flowing or dripping from the apparatus during periods when no liquid is being applied. The unit consists of a housing with two interior passageways, one for liquid and the other for air, separated by a flexible diaphragm. The liquid being applied flows through the liquid passageway on its way to the nozzle. During application, compressed air is introduced into the air passageway, thus flexing the diaphragm away from its median position and reducing the volume of the liquid passageway. When application is stopped, the air passageway is vented to the atmosphere, thus reducing the pressure therein and permitting a spring to return the diaphragm to its median position. This return motion of the diaphragm increases the volume of the liquid passageway and draws the liquid back away from the nozzle so that no drip occurs.
    • 用于液体施加装置的单独或并入的无滴漏的吸回单元,其中相对于设备移动的材料通过一个或多个喷嘴被选择性地点状,串珠化或涂覆有诸如胶水或塑料的液体,并且其中 没有滴水回吸单元可以防止在不施加液体的时间内多余的液体从设备流出或滴落。 该单元由具有两个内部通道的壳体组成,一个用于液体,另一个用于空气,由柔性隔膜隔开。 所施加的液体在通向喷嘴的途中流过液体通道。 在施加期间,压缩空气被引入到空气通道中,从而使隔膜偏离其中间位置并减小液体通道的体积。 当应用停止时,空气通道被排放到大气中,从而减小其中的压力,并允许弹簧将隔膜返回到其中间位置。 隔膜的这种返回运动增加了液体通道的体积,并将液体从喷嘴抽回,使得不会发生滴液。