Masking paper having a rugose coating of rubber latex
    139.
    发明授权
    Masking paper having a rugose coating of rubber latex 失效
    具有橡胶胶乳的粗糙涂层的掩模纸

    公开(公告)号:US3152921A

    公开(公告)日:1964-10-13

    申请号:US11978461

    申请日:1961-06-27

    Abstract: A masking sheet suitable for use on acrylic resin surfaces comprises a substantially non-stretch backing-sheet, e.g. of paper, glassine or "Cellophane" (Registered Trade Mark), having at least one surface which is highly smooth, e.g. polished or glazed, the smooth surface carrying a substantially continuous non-tacky rubber coating with a rugose outer surface, the other second side of the backing sheet having an outer surface which will not bond with the rubber coated surface when the sheet is rolled upon itself. Preferably, the second surface has applied thereto a rubber release agent, e.g. a metallic soap or a Werner type complex of trivalent chromium co-ordinated with an acyclic carboxylic acid group having at least 10 carbon atoms. The rubber coating may be applied by conventional methods, e.g. by means of a rugated doctor blade using a compounded, centrifuged, natural rubber latex which, preferably, has been mechanically worked to make it plastic and substantially non-tacky.

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