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Antitheft safety paper

A safety paper, amorphous technology, applied in papermaking, paper, textiles and papermaking, etc., can solve the problems such as the failure of the alarm function of anti-theft safety paper, and the easy discovery and destruction of amorphous strips

Pending Publication Date: 2016-12-07
BEIJING HENGWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology is to implant a metal strip with a length of 32 mm and a width of 1 mm into the paper. The amorphous strip is easy to be found and then destroyed, making the alarm function of this anti-theft security paper invalid.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Preparation of Amorphous Fibers, Taylor Spinning Process

[0079] Refer to the attached figure 1 , taking the glass-coated amorphous fiber as an example, the preparation method of the amorphous fiber of the present invention is introduced.

[0080] First, a Co-based master alloy rod is provided. The alloy rod has a melting point of 970° C., a diameter of 7 mm, and a composition of Co71.8Fe4.9Nb0.8Si7.5B15. Choose a glass tube with a softening temperature of 780°C, an outer diameter of 12mm, and a wall thickness of 1mm.

[0081] Insert the master alloy rod into the bottom of the glass tube;

[0082] The master alloy is melted in a high-frequency induction furnace and heated to 1200°C;

[0083] Soften the glass tube with molten master alloy;

[0084] Pull out the wire by pulling;

[0085] Through the cooling water, the master alloy in the molten state will be cooled to form an amorphous alloy;

[0086] Wound on the take-up roller, the take-up speed is 30 m / min;

[...

Embodiment 2

[0091] Papers with different contents of amorphous fibers are prepared by directly implanting the amorphous fibers prepared in Example 1 into the paper, wherein the total length distribution of the amorphous fibers in the paper is 0.5m / A4 paper, 0.75m / A4 paper, 1m / A4 paper, 2m / A4 paper. The prepared paper containing amorphous fibers is tested, and the results are as follows (wherein each result is a statistical result obtained by repeated detection of 1000 sheets of paper, and the detection rate refers to when the paper is put into the detection area of ​​the detection instrument, the detection instrument alarms times):

[0092]

[0093]

[0094] It can be seen from the above results that the glass-coated amorphous fiber prepared in Example 1 has a large Barkhausen effect. In the case where the length of the amorphous fiber is less than or equal to 1mm, the detection rate of the instrument for this anti-theft security paper is lower than 55%. However, when the length o...

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Abstract

The invention relates to antitheft safety paper and a preparation method thereof. Particularly, noncrystalline fiber with is implanted in the antitheft safety paper, and diameter of the noncrystalline fiber is 10-50 micronmeters and 20-30 micrometers preferably while length of the same is 2-10mm or 3-8mm or 3-5mm.

Description

technical field [0001] The present application relates to an anti-theft security paper and a method for preparing the anti-theft security paper. Background technique [0002] As a resource, information is of special significance to human beings due to its universality, sharing, value-added, processability and multi-utility. According to the definition of the International Organization for Standardization, the meaning of information security mainly refers to the integrity, availability, confidentiality and reliability of information. The fundamental purpose of protecting information security is to protect internal information from internal, external, natural and other threats. Information security is an issue that any country must attach great importance to, and it is a national security strategy that cannot be ignored. Hostile forces or illegal organizations use various means to steal political, military, economic, scientific and technological secret information, and how th...

Claims

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Application Information

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IPC IPC(8): D21H15/06D21H21/48D21H13/38D01D5/00
Inventor 陈征王诚
Owner BEIJING HENGWEI TECH CO LTD
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