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SECURITY PAPER, MANUFACTURING METHOD AND SECURITY DOCUMENT OBTAINED WITH SUCH PAPER.
SECURITY PAPER, MANUFACTURING METHOD AND SECURITY DOCUMENT OBTAINED WITH SUCH PAPER.
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机译:此类纸张附带的安全纸,制造方法和安全文件。
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摘要
The invention consists in a security paper, as well as the security document obtained with it and the manufacturing process thereof, that combines the security elements called windowed thread with the high contrast single-tone watermark technique. In order to carry out this invention, we make use of the recesses created to cover the thread in the areas where it is visible, which exhibit a greater accumulation of fibres and are therefore opaque areas in the final paper, to insert therein the electrotype or high contrast single-tone watermarks.
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