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Anti-counterfeit paper added with anti-counterfeit short fiber and manufacturing method thereof

A manufacturing method and a technology of short fibers, which are applied to anti-counterfeiting paper added with anti-counterfeiting short fibers and its manufacturing field, can solve problems such as improper use of anti-counterfeiting short fibers, hair loss, and printing difficulties, and achieve rich anti-counterfeiting performance and enhanced edge tearing The effect of improving strength and flow resistance

Active Publication Date: 2012-04-18
BAODING BANKNOTE PAPER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] First of all, anti-counterfeiting short fibers will be randomly distributed in all directions in the paper, and the fiber direction is disordered and uncontrollable. It does not have the conditions to develop the second-line anti-counterfeiting function. At the same time, the visual effect is relatively simple.
Secondly, the improper use of directly added anti-counterfeiting staple fibers will also cause production difficulties. For example, in the papermaking process, various slag removal equipment used have certain technological requirements, especially small-diameter sieve holes are easily damaged by poor performance. At the same time, this method of adding generally has higher requirements on the fiber material, otherwise the fibers distributed on the paper are easy to fall off, which will bring great difficulties to printing, such as: hair loss, thread breakage, ink accumulation Printing problems such as printing not only affect printing production but also directly affect the quality of printed products and their anti-counterfeiting effects
[0009] To sum up, the current production technology needs to be further improved for the existing anti-counterfeiting paper with anti-counterfeiting fibers, especially short anti-counterfeiting fibers, and its manufacturing process.

Method used

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  • Anti-counterfeit paper added with anti-counterfeit short fiber and manufacturing method thereof
  • Anti-counterfeit paper added with anti-counterfeit short fiber and manufacturing method thereof
  • Anti-counterfeit paper added with anti-counterfeit short fiber and manufacturing method thereof

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Experimental program
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preparation example Construction

[0057]The preparation of anti-counterfeiting paper mainly includes the following steps: fine pulping step, pulping step, papermaking step, sizing step, drying step, such as figure 2 As shown, specifically:

[0058] Refining step: beating fiber raw materials (such as cotton pulp, wood pulp, straw pulp, hemp pulp, etc.) in a refiner to obtain pulp;

[0059] Pulp mixing step: add chemical additives, fillers, other additives, etc. to the refined pulp, and stir evenly; the chemical additives generally use reinforcing agents such as urea-formaldehyde resin and melamine-formaldehyde resin, and the fillers can be selected from Titanium dioxide, kaolin, talcum powder, etc. Other additives can be selected from one or more of retention aids, filter aids, defoamers, etc.; the specific ratio can be carried out according to the conventional operation of the prior art;

[0060] Papermaking step: Use a paper machine to make paper pulp after pulp preparation to obtain anti-counterfeit cloth ...

Embodiment 1

[0088] This embodiment provides a kind of anti-counterfeiting paper, which is mainly prepared according to the following steps:

[0089] 1. Preparation of anti-counterfeiting long fibers: immerse the adhesive filament (white) spindle in a carbon tetrachloride solution dissolved with quantum dot materials, the concentration of quantum dot materials in the solution is 1-200ppm (preferably 2-100ppm), Preparation of adhesive filaments loaded with quantum dots, the quantum dot material will emit red light when excited by ultraviolet light with a wavelength of 640nm;

[0090] 2. Cut the above-mentioned anti-counterfeit long fibers into anti-counterfeit staple fibers of 38mm, mix 2-30% of water-soluble vinylon staple fibers with a hot-melt temperature of 65°C, 69.999%-87.999% of cotton fibers with the above-mentioned anti-counterfeit staple fibers of 0.001% proportion, According to the traditional spinning process, 100 anti-counterfeiting yarns with quantum dot anti-counterfeiting ch...

Embodiment 2

[0102] This embodiment provides a kind of anti-counterfeiting paper, which is mainly prepared according to the following steps:

[0103] 1, the preparation of anti-counterfeit long fiber is the same as embodiment 1;

[0104] 2. Cut the above-mentioned anti-counterfeiting long fibers into 50mm anti-counterfeiting short fibers, mix 20% of water-soluble vinylon staple fibers with a hot melting temperature of 65°C, 79.998% of cotton fibers with the above-mentioned anti-counterfeiting short fibers of 0.002% proportion, according to the traditional spinning process 100 anti-counterfeiting yarns with quantum dot anti-counterfeiting features are made through carding, sliver, spinning and other processes;

[0105] 3. Make the above-mentioned anti-counterfeiting yarns as weft and warp, and use a narrow-width loom to obtain a webbing through a weaving process, that is, the anti-counterfeiting webbing of this embodiment. The width of the webbing is 10mm, and the side weft of the webbing i...

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Abstract

The invention provides anti-counterfeit paper added with an anti-counterfeit short fiber and a manufacturing method thereof. The method provided by the invention comprises the following steps of: blending the anti-counterfeit short fibre and one or more than one of a water soluble fibre, a hot melting fibre and a textile fibre into an anti-counterfeit yarn, wherein the anti-counterfeit short fibre is a fibre which has the length of 3-150mm and has an anti-counterfeit effect; releasing the anti-counterfeit yarn in front of a paper machine net during the anti-counterfeit paper manufacturing process, thus the anti-counterfeit yarn is compounded with a paper substrate; and controlling the position and running direction of the anti-counterfeit yarn in the paper so as to control the position and running direction of the anti-counterfeit short fiber in the paper. According to the anti-counterfeit paper prepared by adopting the method provided by the invention, the anti-counterfeit short fibre can be distributed on the surface of the paper or in a paper layer and is in discontinuous linear distribution, the running direction of the anti-counterfeit short fibre is controllable, especially the anti-counterfeit short fibre can appear in a cross shape and has first anti-counterfeit capability, and the anti-tearing property of the paper can be enhanced.

Description

technical field [0001] The invention belongs to the technical field of pulping and papermaking, and in particular relates to an anti-counterfeit paper added with anti-counterfeit short fibers and a manufacturing method thereof. Through the application process of anti-counterfeit short fibers, the anti-counterfeit short fibers can be distributed on the paper surface or in a layer in a non-continuous manner. The distribution is linear, and its direction is controllable, especially making the anti-counterfeit short fibers appear in a cross shape. Background technique [0002] In the field of anti-counterfeiting paper products such as banknote paper, there are three levels of anti-counterfeiting technology, namely, first-line anti-counterfeiting (features that can be perceived without the aid of instruments: such as vision, touch, etc.), second-line anti-counterfeiting (specific electromagnetic characteristics, capable of machine reading) , Three-line anti-counterfeiting (modern...

Claims

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Application Information

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IPC IPC(8): D21H15/02
Inventor 吴梅竹曹秀痕朱西赏刘永红
Owner BAODING BANKNOTE PAPER CO LTD
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