Electrostatic spinning nano-fiber film, and preparation method and finger detection method of electrostatic spinning nano-fiber film

A nanofiber membrane and electrospinning technology, applied in the field of preparation method and fingerprint detection, fiber membrane, can solve the problems of rapid detection and analysis of unfavorable fingerprints, complex and cumbersome pretreatment process, poor fingerprint quality, etc., and achieve no toxic side effects , The process is fast and convenient, and the effect of fingerprint contrast is clear
CN102115953BActive Publication Date: 2012-11-07江苏仁通节能科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
江苏仁通节能科技有限公司
Publication Date
2012-11-07

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Abstract

The invention discloses an electrostatic spinning nano-fiber film, and a preparation method and a finger detection method of the electrostatic spinning nano-fiber film. The finger detection method has the advantages of simplicity, rapidity, high sensitivity and no toxicity or harm, and dispenses with large instruments. The prepared fiber film has a wide range of practical objects, is rapid and convenient for operation, and is easy for mass production, and the raw material of the fiber film can be easily acquired. The invention mainly adopts the electrostatic spinning technology to prepare thepolymer-based dye hybridization nano-fiber film, and the film can be used for direct fingerprint extraction and rapid fingerprint display at a certain temperature. The electrostatic spinning nano-fiber film disclosed by the invention is a polymer nano-fiber film in which dyes are evenly dispersed, wherein, the mass ratio of polymer and the dyes is 2-100 to 1, and the nano-fiber diameter is uniform and ranges from 50nm to 1,000nm.
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Description

technical field

[0001] The invention relates to a fibrous film, a preparation method and a method for detecting fingerprints thereof, and more specifically relates to an electrospun nanofiber film, a preparation method and a method for detecting fingerprints thereof. Background technique

[0002] Human skin consists of three parts: epidermis, dermis and subcutaneous tissue. Fingerprints are raised lines on the skin. Due to the genetic nature of people, fingerprints are unique to the human body, although everyone has them, and they are complex enough to provide sufficient features for identification. At present, fingerprint detection is still one of the most powerful evidence presented in court, and it can be used to determine the evidence of presence. In addition, fingerprints are also widely used in access control and medical testing.

[0003] Since Aubert used silver nitrate to display latent fingerprints in 1877, fingerprint detection has gradually become a professiona...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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