Coating method
    2.
    发明授权
    Coating method 失效
    涂布方法

    公开(公告)号:US5030484A

    公开(公告)日:1991-07-09

    申请号:US376268

    申请日:1989-07-03

    摘要: A coating method and an extrusion-type coating head in which turbulence at the junction between two flows of coating materials is prevented to provide multi-layer simultaneous coating over a wide range of coating rates and with a good coating quality. An intermediate block is sandwiched between a rear block defining a back edge and a front block defining a doctor edge. Two coating flows pass through slits formed on either side of the intermediate block, joining at the top end of the intermediate block and flowing together into a short slot extending between the end of the intermediate block and the outlet of the head.

    摘要翻译: 一种涂覆方法和挤出型涂覆头,其中防止两个涂层材料流之间的连接处的湍流,以在广泛的涂布速率和良好的涂层质量下提供多层同时涂布。 中间块被夹在限定后边缘的后块和限定医生边缘的前块之间。 两个涂层流动通过形成在中间块的任一侧的狭缝,在中间块的顶端处接合并且一起流入在中间块的端部和头部的出口之间延伸的短槽中。

    Coating method
    4.
    发明授权
    Coating method 失效
    涂布方法

    公开(公告)号:US4976992A

    公开(公告)日:1990-12-11

    申请号:US417160

    申请日:1989-10-04

    摘要: A method for coating a running support with a coating solution, such as in the production of a magnetic recording medium, in which spreading of the coating solution into edge portions of the support not intended to be coated with the coating solution is prevented, hence providing a coating layer uniform in thickness and with good surface characteristics. Immediately before application of the coating solution to the support, a solvent is applied to regions of the support which are not to be coated with the coating solution and which are located on both sides of the coating region to be coated with the coating solution. In accordance with the invention, the solubility parameter of the solvent is made different from that of a solvent contained in the coating solution by at least 1.2 at a temperature of 25.degree. C.

    摘要翻译: 通过涂覆溶液涂覆运行中的支撑体的方法,例如在生产磁记录介质时,防止涂层溶液扩散到不希望涂覆溶液的涂层边缘部分,因此提供 厚度均匀且表面特性好的涂层。 在将涂布溶液施加到载体之前,将溶剂施加到不涂覆涂层溶液的位于待涂覆涂层溶液的涂覆区域两侧的载体区域。 根据本发明,在25℃的温度下使溶剂的溶解度参数与包含在涂布溶液中的溶剂的溶解度参数不同至少为1.2。

    Method of applying a liquid to a moving web
    9.
    发明授权
    Method of applying a liquid to a moving web 失效
    将液体施加到移动网的方法

    公开(公告)号:US4717603A

    公开(公告)日:1988-01-05

    申请号:US930475

    申请日:1986-11-14

    CPC分类号: B05D1/26 B05C5/0254 G11B5/842

    摘要: A method of applying a liquid to a moving web while pushing an extrusion application head to the moving web without supporting the moving web on the reverse side thereof. The application is performed while the accumulation of the liquid to be applied to the moving web is maintained by (a) the moving web and (b) an edge of the back blade of the extrusion application head, the edge being defined by the intersection of (1) a first surface of the back blade which faces the front blade and which is nearest the web, and (2) a second surface of the back blade which is more remote from the front blade than the first surface and, wherein the pressure of the liquid of the accumulation located between the web and the outlet portion of the slit of the extrusion application head is set within a range from 0.2 kg/cm.sup.2 gauge to 0.8 kg/cm.sup.2 gauge per 50 cm of width of applied liquid.

    摘要翻译: 一种在将挤出施加头推向移动幅材的同时将液体施加到移动幅材上的方法,而不在其反面上支撑移动幅材。 当通过(a)移动幅材和(b)挤出施加头的后叶片的边缘来维持施加到移动幅材上的液体的积聚时,执行应用,边缘由 (1)后刀片的面向前刀片并且最靠近腹板的第一表面,和(2)后刀片的比第一表面更远离前刀片的第二表面,并且其中压力 位于幅材和挤出施加头的狭缝的出口部分之间的积聚液的液体被设定在每50cm宽的施加液体的0.2kg / cm 2表压至0.8kg / cm2表压的范围内。

    Device for applying liquid to moving web
    10.
    发明授权
    Device for applying liquid to moving web 失效
    将液体施加到移动网的装置

    公开(公告)号:US5119757A

    公开(公告)日:1992-06-09

    申请号:US505086

    申请日:1990-04-05

    IPC分类号: B05C5/02 G03C1/74

    摘要: An application device for applying a liquid such as a magnetic coating liquid to the surface of a continuously moving web in which the amount of chipping of the surface portions of the outlet portion of the coating head thereof, and hence the amount of streaking in the applied layer of liquid, are remarkably reduced. The outlet portion of the application head is made of a very hard alloy, preferably tungsten carbide, containing crystal grains of a carbide 5 .mu.m or less in mean diameter conjoined to each other by a metal, preferably cobalt in an amount of 12% or less.

    摘要翻译: 一种施加装置,用于将液体如磁性涂布液施加到连续移动的织物的表面,其中涂覆头的出口部分的表面部分的碎裂量以及因此在涂覆头的出口部分的条纹量 液体层显着减少。 应用头的出口部分由非常硬的合金(优选碳化钨)制成,其包含通过金属(优选钴)以12%的量相互连接的平均直径为5微米或更小的碳化物的晶粒, 减。