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    • 3. 发明授权
    • Embossing apparatus having magnetic roller and flexible embossing plates
therefor
    • 压花装置具有磁辊和柔性压花板
    • US4116594A
    • 1978-09-26
    • US766977
    • 1977-02-09
    • Dale D. LeannaAllen R. JorgensenThomas R. CurroAndrew M. Bray
    • Dale D. LeannaAllen R. JorgensenThomas R. CurroAndrew M. Bray
    • B29C33/32B29C59/04B31F1/07B41C1/18B44B5/02F16C13/00B29D7/14
    • B29C59/04B29C33/32B31F1/07B41C1/18B44B5/026F16C13/00B31F2201/0717B31F2201/0723B31F2201/0728B31F2201/073B31F2201/0743B31F2201/0776Y10S425/033
    • Apparatus for applying a continuous embossing pattern to webs of material such as paper or the like and a method for producing an embossing surface. The apparatus includes rollers which receive a web or webs of such material therebetween and removable embossing plates secured to the surface of the rollers and having an embossing surface for embossing the webs. The rollers are constructed such that they have magnetic properties whereby the embossing plates which are comprised of magnetically attracted material can be held against the roller surface. The plates are positioned in closely adjacent relationship with respect to each other such that they provide a continuous embossing pattern around the surface of the roller. The plates and the rollers also include mutually engaging registering means which permit the plates to be accurately aligned with respect to the roller surface. The plates can thus be readily removed or replaced in the event that they become worn or damaged or in the event that it is desirable to change the embossing pattern frequently. The embossing pattern can be formed in the surface of each of the embossing plates by means of a method of coating the plate surfaces with a photo-chemical resist material, laying a negative of the desired pattern over the photo-chemical coating, directing light through the negative to cause selective deterioration of the coating, and subjecting the plate to a caustic chemical, wash chemical, or etchant to etch the desired pattern into the surface of the plate. The plate may, if necessary, be further machined in order to increase the depth of the etching and to improve the definition and clarity of the embossing pattern.
    • 用于将连续压花图案施加到诸如纸或类似材料的纸幅的装置以及用于生产压花表面的方法。 该装置包括在其间容纳这种材料的腹板或腹板的辊,以及固定到辊的​​表面的可移除的压花板,并具有用于压花腹板的压花表面。 辊被构造成使得它们具有磁性,由此由磁吸引材料构成的压花板可以抵靠辊表面保持。 板相对于彼此定位成紧密的关系,使得它们围绕辊的表面提供连续的压花图案。 板和辊也包括相互接合的配准装置,其允许板相对于辊表面精确对准。 因此,如果它们变得磨损或损坏,或者希望经常改变压花图案,则可以容易地移除或更换板。 压花图案可以通过用光致抗蚀剂材料涂覆板表面的方法形成在每个压花板的表面中,在光化学涂层上铺设所需图案的负片,将光引导通过 导致涂层的选择性劣化的负面,以及对板进行苛性化学品,洗涤化学品或蚀刻剂以将期望的图案蚀刻到板的表面中。 如果需要,可以进一步加工板以增加蚀刻的深度并提高压花图案的清晰度和清晰度。