Method for producing fraud-proof value paper, and value paper produced by said method
According to the first variant of the invention, the inventive method consists in using a thread in the form of a thread which is made of an elastic shaped plastic material provided with protective elements. During doping the thread, the thread is brought into contact with a grid cylinder slot prior...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | According to the first variant of the invention, the inventive method consists in using a thread in the form of a thread which is made of an elastic shaped plastic material provided with protective elements. During doping the thread, the thread is brought into contact with a grid cylinder slot prior to the contact of the grid with a paper pulp, and the thread is placed core on the slot bottoms for fixing the thread core to the surface of paper, raising wings upward by means of inclined slots and in fixing the wings in the paper thickness during shaping and pressing. According to the second variant, during doping the thread, the thread contact with the slot is carried out after the contact of the grid with the paper pulp, and the thread core is disposed on the layer of the slot bottom and inside the paper. The wings are raised upward by means of the inclined walls of the slot and fixed to the paper surface by dehydration during shaping and pressing. In the third and fourth variants, the thread is embodied in t |
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