Method for preparing security paper with window and watermark

A technology of anti-counterfeiting paper and windows, applied in textiles and papermaking, papermaking, papermaking and other directions, can solve the problems of easy forgery and achieve the effect of artistic, effective compatibility

Active Publication Date: 2012-09-26
BAODING BANKNOTE PAPER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Most of the existing anti-counterfeiting papers with windows adopt the method of die-cutting to cut uniform windows on the dried paper. This method is relatively simple and is easy to be forged.

Method used

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  • Method for preparing security paper with window and watermark
  • Method for preparing security paper with window and watermark
  • Method for preparing security paper with window and watermark

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment provides a kind of anti-counterfeiting paper with a window in the shape of a pentagram and a watermark, which is prepared through the following steps:

[0042] Prepare a mold in the shape of a five-pointed star. On the mold, the middle part is a window part 1 in the shape of a five-pointed star, and its material is a copper sheet. The material is copper sheet, which is welded on the surface net 3 and made into a mesh cage, such as figure 1 As shown, its cross-section is as figure 2 shown;

[0043] Hoist the cage to the rotary paper machine for papermaking to obtain a wet paper sheet with a five-pointed star-shaped window;

[0044] Composite a layer of holographic film 7 to the middle of two layers of wet paper sheets with windows, which can cover the area with windows, to obtain composite wet paper sheets, press and dry the composite wet paper sheets to obtain dry paper sheets, Promptly obtain the anti-counterfeiting paper with the window of five-poi...

Embodiment 2

[0047] This embodiment provides an anti-counterfeit paper with a clover-shaped window and a watermark, which is prepared through the following steps:

[0048] A clover-shaped die is prepared, on which the middle part is a clover-shaped window part 1 made of copper sheet, and there is a circle of clover-shaped and slightly lower watermark part 2 on the outside of which is made of copper sheet , weld the mold piece on the surface net 3, and make a cage, such as Figure 5 As shown, its cross-section is as Image 6 shown;

[0049] Hoist the net cage to the paper machine for papermaking to obtain a wet paper sheet with a clover-shaped window;

[0050] Lay a layer of fluorescent film on one side of a layer of wet paper with a window, just enough to cover the area with the window, and then use a short former to stick a thinner layer on the side with the fluorescent film Pulp, this layer of pulp only covers the edge part of the fluorescent film and the area on the wet paper sheet w...

Embodiment 3

[0053] This embodiment provides a kind of anti-counterfeiting paper with a window in the shape of an ancient coin and a watermark, which is prepared through the following steps:

[0054] A mold of an ancient coin is prepared. On the mold, the middle part is a window part 1 in the shape of a square hole, and its material is a copper sheet. The outer edge of the square hole is a part of the watermark part 2, and the outer circumference of the ancient coin is also a watermark. As part of part 2, the watermark part 2 is made of copper sheet, and in the area between the above two parts, there is another half of the area as the second watermark part 9, which is made of copper mesh;

[0055] The die is welded on the surface net 3, and made into a mesh cage, such as Figure 8 As shown, its cross-section is as Figure 9 shown;

[0056] Hoist the net cage to the paper machine for copying to obtain wet paper pages with windows and watermarks, wherein the windows and watermarks form the...

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Abstract

The invention relates to a method for preparing security paper with a window and a watermark. The method comprises the following steps: a matrix is manufactured according to the preset shapes of the window and the watermark, and the matrix is welded on a surface mesh to form a mesh cage; the mesh cage is hoisted to a paper machine, and a wet paper sheet is obtained after paper making; at least one layer of film is compounded between two layers of wet paper sheets to obtain a composite wet paper sheet, the composite wet paper sheet is squeezed and dried to obtain a dry paper sheet, then the security paper with the window and the watermark is obtained, or at least one layer of film is compounded on one side of the wet paper sheet, a layer of paper pulp is covered by a short molding machine, and the security paper with the window and the watermark is obtained after squeezing and drying.

Description

technical field [0001] The invention relates to a method for preparing anti-counterfeit paper, in particular to a method for preparing anti-counterfeit paper with windows and watermarks, and belongs to the technical field of anti-counterfeit paper manufacture. Background technique [0002] CN1106091A discloses an improved technical solution for anti-counterfeiting features in paper, particularly relates to papermaking methods and transparent selective areas of paper to provide enhanced anti-counterfeiting features. The papermaking method provided by this invention includes the following steps: depositing fibers on the support surface to forming a porous absorbent paper; applying a composition comprising an iridescent substance including a clearing resin to at least a portion of the porous paper; and then impregnating the porous paper with a sizing resin. [0003] JP2009108449-A discloses an anti-counterfeit paper for anti-counterfeit media such as banknotes, on which a secur...

Claims

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Application Information

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IPC IPC(8): D21F11/08D21H21/40
Inventor 曹秀痕莫广付张连祥马鸿胜苏秀军赵刚史连奎孙皓
Owner BAODING BANKNOTE PAPER CO LTD
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