CN109276257A - A kind of portable corpse fingerprint capturer and the preparation method and application thereof - Google Patents

A kind of portable corpse fingerprint capturer and the preparation method and application thereof Download PDF

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Publication number
CN109276257A
CN109276257A CN201811255914.7A CN201811255914A CN109276257A CN 109276257 A CN109276257 A CN 109276257A CN 201811255914 A CN201811255914 A CN 201811255914A CN 109276257 A CN109276257 A CN 109276257A
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box
corpse
fingerprint
postmortem
fingerprinting
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高峰
刘寰
唐其峰
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Xinjiang Police College
Institute of Forensic Science Ministry of Public Security PRC
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Xinjiang Police College
Institute of Forensic Science Ministry of Public Security PRC
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/117Identification of persons
    • A61B5/1171Identification of persons based on the shapes or appearances of their bodies or parts thereof
    • A61B5/1172Identification of persons based on the shapes or appearances of their bodies or parts thereof using fingerprinting
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00Processes of treating or compounding macromolecular substances
    • C08J3/02Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/03Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
    • C08J3/075Macromolecular gels
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2389/00Characterised by the use of proteins; Derivatives thereof
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2479/00Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2461/00 - C08J2477/00
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/05Alcohols; Metal alcoholates
    • C08K5/053Polyhydroxylic alcohols
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/09Carboxylic acids; Metal salts thereof; Anhydrides thereof

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
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  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
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  • General Health & Medical Sciences (AREA)
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  • Biophysics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The invention discloses a kind of portable corpse fingerprint capturers and the preparation method and application thereof.It includes corpse fingerprint extraction film, the corpse fingerprint extraction film press box of fixed cadaver fingerprint extraction film and the postmortem fingerprinting box for loading simultaneously fixed cadaver fingerprint extraction film and press box;Postmortem fingerprinting box is the hollow box that can be run jointly up and down of upper cover, lower storehouse and spring hinge composition;Spring hinge connects upper cover and lower storehouse;Corpse fingerprint extraction film sticks in lower storehouse.The present invention can be in the lesser space of area, pressing acquisition extraction is directly carried out to the fingerprint of fresh cadaver, stiff corpse, dehydration corpse finger by one, reduce the acquisition technique difficulty of corpse fingerprint, the acquisition extraction procedure for simplifying corpse fingerprint avoids reagent contamination and damage of the conventional method to corpse.The present invention have the characteristics that equipment it is simple, it is easy to carry use, acquisition speed it is fast, fingerprint image is clear, free of contamination, be suitble to criminal investigation department promote the use of.

Description

A kind of portable corpse fingerprint capturer and the preparation method and application thereof
Technical field
The present invention relates to a kind of portable corpse fingerprint capturers and the preparation method and application thereof.
Background technique
At the scene in preliminry basic research, the method for determining corpse source (corpse identity) has relatives to observe identification, portrait compares, The several ways such as DNA comparison, iris comparison, fingerprint comparison and tooth individual identification.Since fingerprint comparison is because it is with database The acquisition comparison of the advantages that capacity is big, discrimination is high, recognition speed is fast, corpse fingerprint is to recognize, searched in unknown corpse source at present A kind of the most commonly used method.But scene is by corpse state (joint stiffness, be difficult to activity etc.), site environment (air duct slats Part, temperature condition, damp condition, mode of transport etc.) and acquisition technique it is opposite with equipment fall behind etc. unfavorable factors influence.Mesh Before, the acquisition of corpse fingerprint is still difficult to be extracted by one at the scene, generally still using by corpse be transported to laboratory by Two or two or more explorers work in coordination the traditional approach such as takes to corpse using ink stamp, silica gel molding, adhesive tape are viscous Body fingerprint is acquired.There are equipment complexity, not Portable belts, technical difficulty of operation for traditional corpse fingerprint collecting equipment and method Greatly, environmental requirement is high, program is cumbersome, great work intensity and the problems such as can pollute to corpse, it is difficult to meet site inspection Work convenient, accurate, quick, free of contamination actual combat demand.
Summary of the invention
The object of the present invention is to provide a kind of portable corpse fingerprint capturers and the preparation method and application thereof, and the present invention can Extraction being acquired to live corpse fingerprint in the acquisition of corpse fingerprint on site, can be used for one, solving live corpse at present Equipment used is complicated in body fingerprint collecting, Portable belt, acquisition technique difficulty be not big, acquisition extraction procedure is cumbersome, great work intensity And the complete problem of fingerprint image, the portable corpse fingerprint capturer of the present invention have simple equipment, use easy to carry, acquisition Speed is fast, fingerprint image is clear, free of contamination advantage.
A kind of portable corpse fingerprint capturer provided by the invention, it includes corpse fingerprint extraction film, it is fixed described in The corpse fingerprint extraction film press box of corpse fingerprint extraction film and for load and fix the corpse fingerprint extraction film with The postmortem fingerprinting box of the corpse fingerprint extraction film press box;
The postmortem fingerprinting box is the hollow box that can be run jointly up and down of upper cover, lower storehouse and spring hinge composition;Institute It states spring hinge and connects the upper cover and the lower storehouse;
The corpse fingerprint extraction film sticks in the lower storehouse.
In above-mentioned fingerprint capturer, the corpse fingerprint extraction film is elastic gel colloid layer;
The corpse fingerprint extraction film press box is stainless steel substrates;
The corpse fingerprint extraction film press box opposite is equipped on one side in the spring hinge of the postmortem fingerprinting box Opening makes the shape of the corpse fingerprint extraction film press box in " door shape ";
The shape of the postmortem fingerprinting box is cuboid.
In above-mentioned fingerprint capturer, it is equipped at the foreboard intermediate openings of the postmortem fingerprinting box cover and refers to slot;
Horizontal filled silicon rubber material buffer layer in the postmortem fingerprinting box cover;
It is equipped at the foreboard intermediate openings in storehouse under the postmortem fingerprinting box and refers to slot;
An ear slot is respectively provided at the side plate intermediate openings of the two sides postmortem fingerprinting box Xia Cang;
Silica filled organopolysiloxane elastomeric gel material layer in storehouse, the corpse fingerprint extraction glue under the postmortem fingerprinting box Piece sticks in the silicone elastomer gels material layer in the lower storehouse.
In above-mentioned fingerprint capturer, the material of the elastic gel colloid layer is fingerprint extraction gel;
The material of the silastic material buffer layer is silastic material;The material of the silicone elastomer gels material layer Material is silicone elastomer gels material;
Dew adhesive faces are equipped in the middle part of the corpse fingerprint extraction film;
Silicone elastomer gels material layer inclination filling from the outside to the core in storehouse under the postmortem fingerprinting box There is the gradient to be 5~15 ° to fill, concretely 5 °;
The upper cover of the postmortem fingerprinting box is riveted in the middle part of back plate opening with lower storehouse with spring hinge.
In above-mentioned fingerprint capturer, the area of the corpse fingerprint extraction film is 65mm × 65mm;The elasticity is solidifying The thickness of micelle colloid layer can be 0.4~0.8mm, concretely 0.8mm;
The length of the opening of the corpse fingerprint extraction film press box is 45mm;The corpse fingerprint extraction film press box Upper side frame is 65mm × 6mm;The left and right sides frame of the corpse fingerprint extraction film press box is 60mm × 10mm;The corpse Two ear of left and right of fingerprint extraction film press box is 25mm × 8mm;A millimeter scale is indicated on the corpse fingerprint extraction film press box; The corpse fingerprint extraction film press box with a thickness of 1mm;
The box body volume of the postmortem fingerprinting box is 70mm × 70mm × 35mm;The postmortem fingerprinting box it is upper Lid is 70mm × 70mm × 15mm;Finger slot at the foreboard intermediate openings of the postmortem fingerprinting box cover having a size of 28mm × 8mm;The thickness of the silastic material buffer layer can be 5~15mm, concretely 10mm;The shore of the silastic material is hard Spending A can be 10~20 °, concretely 15 °;
The lower warehouse product of the postmortem fingerprinting box is 70mm × 70mm × 20mm;Storehouse under the postmortem fingerprinting box Foreboard intermediate openings at finger slot having a size of 28mm × 11mm;The two sides postmortem fingerprinting box Xia Cang side plate intermediate openings The protrusion length of the ear slot at place is 15~30mm, and concretely 25mm, specific area can be 25mm × 8mm;The corpse fingerprint The average thickness for the silicone elastomer gels material layer filled in storehouse under stamp box can be 16~24mm, concretely 20mm; The shore hardness A of silastic material under the postmortem fingerprinting box in storehouse can be 0~5 °, concretely 0 °.
The riveting spring hinge of the postmortem fingerprinting box is 304 stainless steel, 90 ° of spring hinges;
The size of the exposed adhesive faces is 45mm × 54mm.
In above-mentioned fingerprint capturer, the raw material for preparing the fingerprint extraction gel of the corpse fingerprint extraction film includes Water, gelatin, glycerol, active black, polycarbodiimide and transparent polyethylene terephthalate protective film;
The silicon rubber is by dialkyl polydimethylsiloxane base rubber and two fourth of ethyl orthosilicate crosslinking agent and dilaurate Base tin catalyst presses the mass ratio of 1:0.05~0.06:0.03~0.04,4~7 hours sulfidization moldings at 50~70 DEG C;Specifically It can be mass ratio 1:0.06:0.04,6 hours sulfidization moldings at 60 DEG C;
The organic silicon rubber elastomer gel is by Polymethyl methacrylate and hydrogen-based silicone oil crosslinking agent and chloroplatinic acid Catalyst presses the mass ratio of 1:0.05~0.07:0.03~0.05,5~15 hours sulfidization moldings at 60~80 DEG C;Specifically may be used For the mass ratio of 1:0.06:0.004,6 hours sulfidization moldings at 80 DEG C.
In above-mentioned fingerprint capturer, the method for preparing the fingerprint extraction gel, according to including the following steps to prepare:
(1) gelatin and water are impregnated into 12~18 hours formation colloidal solution by the mass ratio of 1:5 at 20~25 DEG C;
(2) glycerol and acetic anhydride are added by the mass ratio of 1:0.2:0.05 in being formed by colloidal solution, 80~160 After stirring 1 hour under rev/min, gel bodies composition is formed after filtering is cooling;
(3) gel bodies composition will be formed by and reactive black dye and poly- carbon is added by the mass ratio of 1:0.005:0.006 Change diimine, 80~160 revs/min of stirrings, 1.5 hours formation stained gels at 75 DEG C;
(4) will be formed by stained gel at 1.5KPa negative pressure evaporation 1 hour to get to the fingerprint extraction gel.
The fingerprint extraction gel rubber material of above method preparation of the present invention, has the property that
(1) the fingerprint extraction gel rubber material is black glossy object under normal light irradiation, is black under strong illumination Color-rufous gloss object, the reflecting rate of the fingerprint collecting gel rubber material colloid layer as prepared by an of the invention example is 11%, Absorptance is 86%.
(2) modest viscosity of the fingerprint extraction gel rubber material, the fingerprint collecting gel as prepared by an example of the invention Material initial bonding strength is 35.5N, holding power 39.8N, peel strength 0.03KN/m.
(3) elasticity of the fingerprint extraction gel rubber material is preferable, the fingerprint collecting gel as prepared by an example of the invention Material is under 500N pressure, and the decrement of colloid layer is 11%, amount of elasticity 80%.
(4) the fingerprint extraction gel rubber material has water oil parents characteristic, and the fingerprint as prepared by an example of the invention is adopted Integrate gel rubber material water absorption rate as 0.25g/g, oil absorbency 0.12g/g.
Within the above-mentioned method for preparing the fingerprint extraction gel belongs to the scope of protection of the present invention.
By the above-mentioned fingerprint extraction gel being prepared be also belong to the scope of protection of the present invention within.
The present invention also provides a kind of corpse fingerprint extraction films, it includes the protective film and intermediate fingerprint of upper and lower two sides Extract gel layer.
The corpse fingerprint extraction gel layer is made of the fingerprint extraction gel.
In above-mentioned corpse fingerprint extraction film, the thickness of the fingerprint extraction gel layer can be 0.6~0.8mm, specifically It can be 0.8mm.
The thickness of the protective film can be 0.09~0.11mm, concretely 0.1mm.
In above-mentioned corpse fingerprint extraction film, the protective film can be transparent polyethylene terephthalate film.
The specific steps are two layers of the transparent poly terephthalic acid second of thickness 0.1mm will be coated according to above-mentioned fingerprint gel colloidal Among diester protective film, the fingerprint film of fingerprint gel colloidal thickness 0.8mm is formed;
The fingerprint film for having covered film is carried out to cut into the corpse fingerprint extraction glue that can be packed into postmortem fingerprinting box size Piece.
The present invention also provides the preparation method of the portable corpse fingerprint capturer, include the following steps: that (1) is logical Mold injection, 3D printing or sheet metal molding mode production postmortem fingerprinting box cover and lower storehouse are crossed, by upper cover and lower storehouse bullet Spring hinge riveting composition postmortem fingerprinting box box body;
(2) silicon rubber vibration-absorptive material is filled in the box body upper cover of postmortem fingerprinting box;To the box of postmortem fingerprinting box Elastomer silicone gel rubber material is filled in storehouse under body;
(3) corpse fingerprint extraction film press box is formed with stainless steel substrates punching etching, and prepares corpse fingerprint extraction film;
(4) the corpse fingerprint extraction sticker is made into its positioning on corpse fingerprint extraction film press box, then by glue Piece is packed into the lower storehouse of postmortem fingerprinting box together with press box to get the portable corpse fingerprint capturer is arrived.
In above-mentioned preparation method, prepare the fingerprint extraction gel of the corpse fingerprint extraction film raw material include water, Gelatin, glycerol, active black, polycarbodiimide and transparent polyethylene terephthalate protective film;
The silicon rubber is by dialkyl polydimethylsiloxane base rubber and two fourth of ethyl orthosilicate crosslinking agent and dilaurate Base tin catalyst presses the mass ratio of 1:0.05~0.06:0.03~0.04,4~7 hours sulfidization moldings at 50~70 DEG C;Specifically It can be mass ratio 1:0.06:0.04,6 hours sulfidization moldings at 60 DEG C;
The organic silicon rubber elastomer gel is by Polymethyl methacrylate and hydrogen-based silicone oil crosslinking agent and chloroplatinic acid Catalyst presses the mass ratio of 1:0.05~0.07:0.03~0.05,5~15 hours sulfidization moldings at 60~80 DEG C;Specifically may be used For the mass ratio of 1:0.06:0.004,6 hours sulfidization moldings at 80 DEG C.
In above-mentioned preparation method, prepares the fingerprint extraction gel and obtain method, according to including the following steps to prepare:
(1) gelatin and water are impregnated into 12~18 hours formation colloidal solution by the mass ratio of 1:5 at 20~25 DEG C;
(2) glycerol and acetic anhydride are added by the mass ratio of 1:0.2:0.05 in being formed by colloidal solution, 80~160 After stirring 1 hour under rev/min, gel bodies composition is formed after filtering is cooling;
(3) gel bodies composition will be formed by and reactive black dye and poly- carbon is added by the mass ratio of 1:0.005:0.006 Change diimine, 80~160 revs/min of stirrings, 1.5 hours formation stained gels at 75 DEG C;
(4) will be formed by stained gel at 1.5KPa negative pressure evaporation 1 hour to get to fingerprint extraction gel.
In above-mentioned preparation method, in step (1), the postmortem fingerprinting box in the foreboard in upper cover Yu lower storehouse There are the grooves of positioning corpse finger in portion;
There are the ear slots for fixing fingerprint extraction film press box in the middle part of the two sides side plate in the lower storehouse;
The upper cover and lower storehouse spring hinge of the postmortem fingerprinting box are riveted in back plate inside middle portion;
The spring hinge is 304 stainless steel, 90 ° of spring hinges;
The hard plate material is 5083 aluminum alloy plate materials of high intensity of 1.5mm thickness.
In above-mentioned preparation method, in step (2), the silicon rubber is filled using reperfusion mode is horizontal in the upper cover Buffer layer step;Being tilted in the lower storehouse described in filling using reperfusion mode has silicone elastomer gel rubber material;
In step (4), there is fixed ear projection with the two sides that stainless steel substrates are punched manufactured corpse fingerprint extraction film press box, under There is " door " shape structure of opening at end.
In above-mentioned preparation method step (4), specifically comprise the following steps:
1) the transparent polyethylene terephthalate protective film of the corpse fingerprint extraction film face is peelled off, viscosity is exposed Colloid layer;
2) be sticked to viscoloid layer on corpse fingerprint extraction film press box on one side, makes the middle part of fingerprint extraction film Expose and keep clean in position;
3) postmortem fingerprinting box cover is opened, the corpse fingerprint extraction film press box of corpse fingerprint extraction film will be adhered to It is packed into storehouse under postmortem fingerprinting box, makes the lower storehouse elastomer silicone for sticking on postmortem fingerprinting box that film face is smooth On gel layer.
Corpse fingerprint is extracted using portable corpse fingerprint capturer described in item invention further provides a kind of Method includes the following steps:
(1) the corpse finger of fingerprint to be collected is protruded into the portable corpse fingerprint capturer, passes through pressing upper cover The silicone elastomer gels layer and fingerprint collecting film that mode makes finger uniform stressed, is pressed into lower storehouse;
(2) portable corpse fingerprint capturer is opened, corpse finger is removed;
(3) it takes pictures in such a way that dark field illumination is taken pictures to the fingerprint acquired on film, corpse can be extracted and referred to Line.
The portable corpse fingerprint capturer of the present invention to corpse fingerprint collecting, based on principle be:
It is preferable due to being fixed on corpse fingerprint extraction film elasticity on corpse fingerprint film press box in lower storehouse, and its lower liner Organic silicon rubber elastomeric gel layer hardness it is low, can be made by way of being closed corpse fingerprint capturer upper cover level fill Silicon rubber buffer layer uniformly presses to corpse finger, and corpse finger is made to push the corpse fingerprint extraction film fallen into lower storehouse and have In machine silicone elastomer gel layer.Corpse fingerprint film takes corpse by way of wrapping up corpse finger, with curved form is viscous The micro aqueous or oiliness fingerprint substance of finger surface mastoid process streakline, is transferred to corpse fingerprint extraction glue for corpse fingerprint image Piece.After removing corpse finger, the corpse fingerprint extraction film for being stained with micro fingerprint substance is sprung back, and forms the corpse of plane Fingerprint image.Since corpse fingerprint extraction film white space glues the impression of the hand substance taken to light with absorbing to the reflection of light Diffusing reflection makes the viscous impression of the hand taken and footage background on corpse fingerprint extraction film have good contrast under light illumination, is formed clear Clear fingerprint image.
The invention has the following advantages that
The portable corpse fingerprint capturer of the present invention can be in the lesser space of area, by one to fresh cadaver, stiff Corpse, the fingerprint for being dehydrated corpse finger directly carry out pressing acquisition and extract, and reduce the acquisition technique difficulty of corpse fingerprint, simplify The acquisition extraction procedure of corpse fingerprint, avoids reagent contamination and damage of the conventional method to corpse.The portable corpse of the present invention Body fingerprint capturer have the characteristics that equipment it is simple, it is easy to carry use, acquisition speed it is fast, fingerprint image is clear, free of contamination, fit It closes and is promoted the use of in criminal investigation department.
Detailed description of the invention
Fig. 1 is corpse fingerprint extraction film of the present invention and protection membrane structure diagram.
Fig. 2 is corpse fingerprint extraction film preparation technology flow chart of the present invention.
Fig. 3 is corpse fingerprint extraction film press frame structure schematic diagram of the present invention.
Fig. 4 is postmortem fingerprinting box box body structure schematic diagram of the present invention, and Fig. 4 (a) is the orthogonal view of box body, (b) is Survey the area of sectional view, (c) upper cover and lower storehouse.
Fig. 5 is postmortem fingerprinting box schematic diagram of internal structure of the present invention.
Fig. 6 is the portable corpse fingerprint capturer structural schematic diagram of the present invention.
Fig. 7 is the schematic illustration that the portable corpse fingerprint capturer of the present invention acquires corpse fingerprint.
Fig. 8 is the method schematic diagram using the present invention portable corpse fingerprint capturer observation and fixed acquisition fingerprint.
Fig. 9 is the fingerprint collecting effect to dehydration corpse finger, and wherein Fig. 9 (a), (b) are dehydration corpse finger figure, Fig. 9 It (c) is the fingerprint image of the dehydration corpse finger of acquisition.
It is respectively marked in Fig. 1,4-7 as follows:
11 transparent polyethylene terephthalate protective films;12 fingerprint extraction film gel colloidal layers;1 upper cover;2 spring hinges Chain;3 lower storehouses;4 corpse fingerprint extraction film press boxes;5 corpse fingerprint extraction films;6 organic silicon rubber elastomeric gel layers;7 silicon Rubber shock-absorbing layer;8 corpse fingers.
Specific embodiment
Experimental method used in following embodiments is conventional method unless otherwise specified.
The materials, reagents and the like used in the following examples is commercially available unless otherwise specified.
Invention is further explained with reference to the accompanying drawing, but the invention is not limited to following embodiments.
Shown in Fig. 6, for the structural schematic diagram of the portable corpse fingerprint capturer of the present invention, it includes corpse fingerprint extraction glue Piece 5, fixed cadaver fingerprint extraction film 5 corpse fingerprint extraction film press box 4 and for load and fixed cadaver fingerprint extraction The postmortem fingerprinting box of film 5 and corpse fingerprint extraction film press box 4.
As shown in figure 4, postmortem fingerprinting box is can running jointly up and down of forming of upper cover 1, lower storehouse 3 and spring hinge 2 Sylphon body;Spring hinge 2 connects upper cover 1 and lower storehouse 3;Corpse fingerprint extraction film 5 sticks in lower storehouse 3.
Further, corpse fingerprint extraction film 5 is elastic gel colloid layer;
Corpse fingerprint extraction film press box 6 is stainless steel substrates;
Corpse fingerprint extraction film press box 6 is open in opposite being equipped on one side of spring hinge 2 of postmortem fingerprinting box, makes The shape of corpse fingerprint extraction film press box 6 is in " door shape ";
The shape of postmortem fingerprinting box is cuboid.
Further, it is equipped at the foreboard intermediate openings of postmortem fingerprinting box cover and refers to slot;
As shown in figure 5, horizontal filled silicon rubber material buffer layer 7 in postmortem fingerprinting box cover;
It is equipped at the foreboard intermediate openings in storehouse 3 under postmortem fingerprinting box and refers to slot;
An ear slot is respectively provided at 3 two sides side plate intermediate openings of storehouse under postmortem fingerprinting box;
Silica filled organopolysiloxane elastomeric gel material layer 6 in storehouse 3 under postmortem fingerprinting box, corpse fingerprint extraction film 5 paste It applies in the silicone elastomer gels material layer 6 in lower storehouse 3.
Further, the material of elastic gel colloid layer is fingerprint extraction gel;
The material of silastic material buffer layer is silastic material;The material of silicone elastomer gels material layer is organic Silicone elastomer gel rubber material;
Dew adhesive faces are equipped in the middle part of corpse fingerprint extraction film;
Inclination is filled with the gradient to silicone elastomer gels material layer 6 from the outside to the core in storehouse 3 under postmortem fingerprinting box It is filled for 5~15 °, concretely 5 °;
The upper cover 1 of postmortem fingerprinting box is riveted in the middle part of back plate opening with lower storehouse 3 with spring hinge.
Further, the area of corpse fingerprint extraction film is 65mm × 65mm;Elastic gel colloid layer with a thickness of 0.4 ~0.8mm, concretely 0.8mm;
As shown in figure 3, the length of the opening of corpse fingerprint extraction film press box 4 is 45mm;Corpse fingerprint extraction film pressure The upper side frame of frame 4 is 65mm × 6mm;The left and right sides frame of corpse fingerprint extraction film press box 4 is 60mm × 10mm;Corpse refers to Two ear of left and right that line extracts film press box 4 is 25mm × 8mm;A millimeter scale is indicated on corpse fingerprint extraction film press box 4;Corpse Fingerprint extraction film press box 4 with a thickness of 1mm;
The box body volume of postmortem fingerprinting box is 70mm × 70mm × 35mm;The upper cover of postmortem fingerprinting box is 70mm ×70mm×15mm;Finger slot at the foreboard intermediate openings of postmortem fingerprinting box cover is having a size of 28mm × 8mm;Silicon rubber material Expect buffer layer with a thickness of 5~15mm, concretely 10mm;The shore hardness A of the silastic material can be 10~20 °, tool Body can be 15 °;
3 volume of lower storehouse of postmortem fingerprinting box is 70mm × 70mm × 20mm;The foreboard in storehouse 3 under postmortem fingerprinting box Finger slot at intermediate openings is having a size of 28mm × 11mm;Ear slot under postmortem fingerprinting box at 3 two sides side plate intermediate openings of storehouse Protrusion length is 15~30mm, and concretely 25mm, specific area can be 25mm × 8mm;It is filled out in storehouse 3 under postmortem fingerprinting box The average thickness for the silicone elastomer gels material layer 6 filled is 16~24mm, concretely 20mm;Under postmortem fingerprinting box The shore hardness A of silastic material in storehouse 3 is 0~5 °, concretely 0 °.
The riveting spring hinge 2 of postmortem fingerprinting box is 304 stainless steel, 90 ° of spring hinges;
The size of exposed adhesive faces is 45mm × 54mm.
Specifically, as shown in Figure 1, being the structural schematic diagram of corpse fingerprint extraction film, it includes the protection of upper and lower two sides Film 11 and intermediate fingerprint extraction gel layer 12.Corpse fingerprint extraction gel layer is made of the fingerprint extraction gel.Fingerprint mentions The thickness for taking gel layer can be 0.6~0.8mm, concretely 0.8mm.The thickness of protective film can be 0.09~0.11mm, specifically It can be 0.1mm.Protective film can be transparent polyethylene terephthalate film.
The preparation of embodiment 1, corpse fingerprint extraction film
Process as shown in Figure 2 prepares corpse fingerprint extraction film.
(1) gelatin and deionized water is molten by mass ratio 12~18 hours formation colloids of immersion of 1:5 at 20~25 DEG C Liquid.
(2) glycerol and acetic anhydride are added by the mass ratio of 1:0.2:0.05 in being formed by colloidal solution, in 80-160 After stirring 1 hour under rev/min, gel bodies composition is formed after filtering is cooling.
(3) gel bodies composition will be formed by and reactive black dye and poly- carbon is added by the mass ratio of 1:0.005:0.006 Change diimine, 80~160 revs/min of stirrings, 1.5 hours formation stained gels at 75 DEG C.
(4) stained gel 1 hour acquisition fingerprint gel colloidal of negative pressure evaporation at 1.5KPa will be formed by.
(5) two layers transparent polyethylene terephthalate of the fingerprint gel colloidal coated in thickness 0.1mm will be formed by protect Among cuticula, the fingerprint film of fingerprint gel colloidal thickness 0.8mm as shown in Figure 1 is formed.
(6) the fingerprint film for having covered film is cut, the corpse fingerprint that can be packed into postmortem fingerprinting box size is made Extract film.
The fingerprint gel colloidal of this example preparation is black glossy object under normal light irradiation, is black under strong illumination Color-rufous gloss object, the reflecting rate of the fingerprint collecting gel rubber material colloid layer as prepared by an of the invention example is 11%, Absorptance is 86%.
Using GB/T 4852-2002 pressure-sensitive tape tack test method (rolling ball method), GB/T 4851-2014 gluing Band holds the test method of viscosity and the test method of GB/T 2792-2014 adhesive tape peel strength, measures manufactured in the present embodiment The viscous force of fingerprint collecting gel rubber material is 35.5N, holding power 39.8N, peel strength 0.03KN/m, it is seen that it is with viscous force Moderate feature.
Using the elastic measurement of GB/T 1681-2009 vulcanized rubber and GB/T 528-2009 vulcanized rubber or thermoplasticity The experimental method of rubber tensile ess-strain performance measures decrement of the gel rubber material manufactured in the present embodiment in 500N pressure It is 11%, amount of elasticity 80%, it is seen that it has the characteristics that excellent spring.
Using the measuring method of GB/T 1034-2008 plastic ink absorption, the suction of gel rubber material manufactured in the present embodiment is measured Water rate is 0.45g/g, uses dioctyl phthalate, measurement referring to the measuring method of GB/T 1034-2008 plastic ink absorption The oil absorbency of gel rubber material manufactured in the present embodiment be 0.12g/g, it is seen that gel rubber material manufactured in the present embodiment its with water oil The characteristic of parents.
The preparation of embodiment 2, corpse fingerprint extraction film press box
It is made of the 304 stainless steel substrates punching of 1mm and indicates a millimeter scale, there are fixed ear projection in two sides, and there is opening in lower end " door " shape structure corpse fingerprint extraction film press box, film press box top frame width 6mm long 65mm, film press box left and right sides frame There is opening for wide 45mm in wide 10mm long 60mm, the wide 8mm long 25mm of two ear of film press box or so, corpse fingerprint extraction film press box lower end Mouthful, as shown in Figure 3.
The corpse fingerprint extraction film press box of this example preparation mentions corpse fingerprint for adhering to corpse fingerprint extraction film Film is taken to be fixed in postmortem fingerprinting box.
The preparation of embodiment 3, postmortem fingerprinting box
(1) 70mm × 70mm × 15mm corpse is made with 5083 aluminum alloy plate materials of high intensity of 1.5mm thickness punching metal plate to refer to Storehouse under the box body upper cover and 70mm × 70mm × 20mm box body of line stamp box, as shown in Figure 4.
(2) the finger slot of deep 8mm wide 28mm is milled out in the middle part of box body upper cover foreboard.
(3) the finger slot of deep 11mm, width 28mm are milled out in the middle part of the foreboard of storehouse under box body, left and right sides side plate middle part position respectively mills The ear slot of a depth 8mm, width 25mm out.
(4) the box body upper cover with 304 stainless steel, 90 ° of spring hinges in postmortem fingerprinting box and lower storehouse back plate inside middle portion It is riveted.
(5) it is catalyzed with dialkyl polydimethylsiloxane base rubber and ethyl orthosilicate crosslinking agent and dibutyl tin dilaurate Agent is mixed by the mass ratio of 1:0.06:0.04, mixed solution level is fed into box body upper cover, the vulcanization crosslinking 6 at 60 DEG C Hour, form the silicon rubber buffer layer of 10mm thickness.
(6) box body lower cover is placed on -5 ° of inclined-plane, with Polymethyl methacrylate and hydrogen-based silicone oil crosslinking agent and Chloroplatinic acid catalyst is mixed by the mass ratio of 1:0.06:0.004, mixed solution level is fed under box body in storehouse, at 70 DEG C Lower vulcanization crosslinking 6 hours forms slope surface and lower orlop face as 5 ° of inside thickness 24mm, the organic silicon rubber elasticity of outside thickness 16mm Body gel layer, as shown in Figure 5.
The postmortem fingerprinting box of this example preparation is 70mm × 70mm × 35mm that about 90 ° foldings can be carried out from front side Hollow cuboid box, having area on front panel is 5cm2To corpse finger positioning fillet rectangle refer to slot, two sides Having area on panel is 2cm2To corpse fingerprint extraction film press box positioning rectangle ear slot.
Using the pocket hardometer penetration hardness test method of GB/T 531-1999 rubber, the upper cover of this example preparation is measured The shore hardness A of middle silastic material is 15 °, and the shore hardness A for having silicone elastomer gel rubber material in lower storehouse is 0 °, can It can be the characteristic that corpse finger uniformly presses that the silicon rubber seen in postmortem fingerprinting box cover, which has, have silicon rubber in lower storehouse Elastomeric gel material has the characteristic to deform vulnerable to pressure.
The assembling of embodiment 4, portable corpse fingerprint capturer
(1) the transparent polyethylene terephthalate protective film of corpse fingerprint extraction film face is peelled off, sticky glue is exposed Body layer.
(2) be sticked to viscoloid layer on corpse fingerprint extraction film press box on one side, makes the centre of fingerprint extraction film Expose and keep clean in position.
(3) postmortem fingerprinting box cover is opened, the corpse fingerprint extraction film pressure of corpse fingerprint extraction film will be adhered to Frame is packed into storehouse under postmortem fingerprinting box, makes the lower storehouse organosilicone elastic for sticking on postmortem fingerprinting box that film face is smooth On body gel layer, portable corpse fingerprint capturer as shown in FIG. 6 is formed.
When carrying out corpse fingerprint collecting using the portable corpse fingerprint capturer of the present invention, it can carry out as follows:
(1) the corpse finger of fingerprint to be collected is protruded into portable corpse fingerprint capturer, by way of closed box Make finger uniform stressed, insertion elastomer silicone gel layer, so that corpse fingerprint extraction film is wrapped up corpse finger, such as Fig. 7 institute Show.
(2) portable corpse fingerprint capturer is opened, corpse finger is removed.
(3) fingerprint on film in corpse fingerprint capturer take pictures mentioning in such a way that dark field illumination is taken pictures It takes, as shown in Figure 8.
According to the method described above, it is adopted using fingerprint of the portable corpse fingerprint capturer of the present invention to dehydration corpse finger Collection, the fingerprint image effect of extraction are as shown in Figure 9.

Claims (10)

1. a kind of portable corpse fingerprint capturer, it is characterised in that: it includes corpse fingerprint extraction film, the fixed corpse The corpse fingerprint extraction film press box of fingerprint extraction film and for load and fix the corpse fingerprint extraction film with it is described The postmortem fingerprinting box of corpse fingerprint extraction film press box;
The postmortem fingerprinting box is the hollow box that can be run jointly up and down of upper cover, lower storehouse and spring hinge composition;The bullet Spring hinge connects the upper cover and the lower storehouse;
The corpse fingerprint extraction film sticks in the lower storehouse.
2. fingerprint capturer according to claim 1, it is characterised in that: the corpse fingerprint extraction film is elastic gel Colloid layer;
The corpse fingerprint extraction film press box is stainless steel substrates;
The corpse fingerprint extraction film press box is open in opposite being equipped on one side of spring hinge of the postmortem fingerprinting box, Make the shape of the corpse fingerprint extraction film press box in " door shape ";
The shape of the postmortem fingerprinting box is cuboid.
3. fingerprint capturer according to claim 1 or 2, it is characterised in that: before the postmortem fingerprinting box cover It is equipped at plate intermediate openings and refers to slot;
Horizontal filled silicon rubber material buffer layer in the postmortem fingerprinting box cover;
It is equipped at the foreboard intermediate openings in storehouse under the postmortem fingerprinting box and refers to slot;
An ear slot is respectively provided at the side plate intermediate openings of the two sides postmortem fingerprinting box Xia Cang;
Silica filled organopolysiloxane elastomeric gel material layer in storehouse, the corpse fingerprint extraction film plaster under the postmortem fingerprinting box It applies in the silicone elastomer gels material layer in the lower storehouse.
4. fingerprint capturer according to claim 2 or 3, it is characterised in that: the material of the elastic gel colloid layer is Fingerprint extraction gel;
The material of the silastic material buffer layer is silastic material;The material of the silicone elastomer gels material layer is Silicone elastomer gels material;
Dew adhesive faces are equipped in the middle part of the corpse fingerprint extraction film;
Inclination is filled with slope to the silicone elastomer gels material layer from the outside to the core in storehouse under the postmortem fingerprinting box Degree is 5~15 ° of fillings;
The upper cover of the postmortem fingerprinting box is riveted in the middle part of back plate opening with lower storehouse with spring hinge.
5. fingerprint capturer according to claim 4, it is characterised in that: the area of the corpse fingerprint extraction film is 65mm×65mm;The elastic gel colloid layer with a thickness of 0.4~0.8mm;
The length of the opening of the corpse fingerprint extraction film press box is 45mm;The top of the corpse fingerprint extraction film press box Frame is 65mm × 6mm;The left and right sides frame of the corpse fingerprint extraction film press box is 60mm × 10mm;The corpse fingerprint Two ear of left and right for extracting film press box is 25mm × 8mm;A millimeter scale is indicated on the corpse fingerprint extraction film press box;It is described Corpse fingerprint extraction film press box with a thickness of 1mm;
The box body volume of the postmortem fingerprinting box is 70mm × 70mm × 35mm;The upper cover of the postmortem fingerprinting box is 70mm×70mm×15mm;Finger slot at the foreboard intermediate openings of the postmortem fingerprinting box cover is having a size of 28mm × 8mm; The silastic material buffer layer with a thickness of 5~15mm;The shore hardness A of the silastic material is 10~20 °;
The lower warehouse product of the postmortem fingerprinting box is 70mm × 70mm × 20mm;Under the postmortem fingerprinting box before storehouse Finger slot at plate intermediate openings is having a size of 28mm × 11mm;At the side plate intermediate openings of the two sides postmortem fingerprinting box Xia Cang It is 15~30mm that ear slot, which protrudes length,;The silicone elastomer gels material layer filled in storehouse under the postmortem fingerprinting box Average thickness is 16~24mm;The shore hardness A of silastic material under the postmortem fingerprinting box in storehouse is 0~5 °.
The riveting spring hinge of the postmortem fingerprinting box is 304 stainless steel, 90 ° of spring hinges;
The size of the exposed adhesive faces is 45mm × 54mm.
6. fingerprint capturer according to claim 4 or 5, it is characterised in that: prepare the raw material of the fingerprint extraction gel Including water, gelatin, glycerol, active black, polycarbodiimide and transparent polyethylene terephthalate protective film;
The silicon rubber is by dialkyl polydimethylsiloxane base rubber and ethyl orthosilicate crosslinking agent and dibutyl tin dilaurate Catalyst presses the mass ratio of 1:0.05~0.06:0.03~0.04,4~7 hours sulfidization moldings at 50~70 DEG C;
The organic silicon rubber elastomer gel is by Polymethyl methacrylate and hydrogen-based silicone oil crosslinking agent and chloroplatinic acid-catalysis The mass ratio of 1:0.05~0.07:0.03~0.05,5~15 hours sulfidization moldings at 60~80 DEG C are pressed in agent.
7. the fingerprint capturer according to any one of claim 4-6, it is characterised in that: prepare the fingerprint extraction gel Method, according to including the following steps to prepare:
(1) gelatin and water are impregnated into 12~18 hours formation colloidal solution by the mass ratio of 1:5 at 20~25 DEG C;
(2) glycerol and acetic anhydride are added by the mass ratio of 1:0.2:0.05 in being formed by colloidal solution, 80~160 turns/ Under point after stirring 1 hour, gel bodies composition is formed after filtering is cooling;
(3) gel bodies composition will be formed by and reactive black dye and poly- carbonization two is added by the mass ratio of 1:0.005:0.006 Imines, 80~160 revs/min of stirrings, 1.5 hours formation stained gels at 75 DEG C;
(4) will be formed by stained gel at 1.5KPa negative pressure evaporation 1 hour to get to the fingerprint extraction gel.
8. the preparation method of portable corpse fingerprint capturer of any of claims 1-7, includes the following steps: (1) postmortem fingerprinting box cover and lower storehouse are made by mold injection, 3D printing or sheet metal molding mode, by upper cover and lower storehouse Composition postmortem fingerprinting box box body is riveted with spring hinge;
(2) silicon rubber vibration-absorptive material is filled in the box body upper cover of postmortem fingerprinting box;To under the box body of postmortem fingerprinting box Fill in elastomer silicone gel rubber material in storehouse;
(3) corpse fingerprint extraction film press box is formed with stainless steel substrates punching etching, and prepares corpse fingerprint extraction film;
(4) the corpse fingerprint extraction sticker is made into its positioning on corpse fingerprint extraction film press box, then by film with Press box is packed into the lower storehouse of postmortem fingerprinting box together to get the portable corpse fingerprint capturer is arrived.
9. preparation method according to claim 8, it is characterised in that: in step (1), the postmortem fingerprinting box There are the grooves of positioning corpse finger in the middle part of the foreboard in upper cover Yu lower storehouse;
There are the ear slots for fixing fingerprint extraction film press box in the middle part of the two sides side plate in the lower storehouse;
The upper cover and lower storehouse spring hinge of the postmortem fingerprinting box are riveted in back plate inside middle portion;
The spring hinge is 304 stainless steel, 90 ° of spring hinges;
The hard plate material is 5083 aluminum alloy plate materials of high intensity of 1.5mm thickness;
In step (2), the silicon rubber buffer layer step is filled using reperfusion mode is horizontal in the upper cover;Using perfusion side Formula, which is tilted in the lower storehouse described in filling, silicone elastomer gel rubber material;
In step (4), there is fixed ear projection with the two sides that stainless steel substrates are punched manufactured corpse fingerprint extraction film press box, lower end has " door " shape structure of opening.
10. a kind of side for extracting corpse fingerprint using portable corpse fingerprint capturer of any of claims 1-7 Method includes the following steps:
(1) the corpse finger of fingerprint to be collected is protruded into the portable corpse fingerprint capturer, by way of pressing upper cover The silicone elastomer gels layer and fingerprint collecting film for making finger uniform stressed, being pressed into lower storehouse;
(2) portable corpse fingerprint capturer is opened, corpse finger is removed;
(3) it takes pictures in such a way that dark field illumination is taken pictures to the fingerprint acquired on film, corpse fingerprint can be extracted.
CN201811255914.7A 2018-10-26 2018-10-26 A kind of portable corpse fingerprint capturer and the preparation method and application thereof Pending CN109276257A (en)

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CN110575179A (en) * 2019-07-15 2019-12-17 李丹萍 Corpse fingerprint acquisition auxiliary plate

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