Fingerprint extraction patch

Abstract

The utility model provides a fingerprint extraction sticker, which belongs to the technical field of fingerprint acquisition appliances and comprises an adhesive tape sticker, the lower surface of the adhesive tape sticker is an adhesive surface, the middle section of the adhesive tape sticker is a fingerprint sticking part, the two ends of the adhesive tape sticker are handheld parts, and a release film is arranged below the handheld parts; the upper surface of the fingerprint pasting part is provided with flexible stabilizing strips, and the flexible stabilizing strips are located on the two opposite sides or the periphery of the fingerprint pasting part. And the contact surface of the stabilizing strip and the adhesive tape is a plane. The release films are arranged on the adhesion surfaces at the two ends of the adhesive tape sticker, and the stabilizing strip is arranged above the adhesive tape sticker, so that normal operation is not influenced, and the situation that fingerprints of operators are adhered to the adhesion surfaces of the adhesive tape sticker, the adhesive tape stickers are mutually adhered, and bubbles are generated can be effectively prevented; the fingerprint extraction device is reasonable in overall structural design, high in practicability and capable of being widely applied to fingerprint extraction work in scenes such as criminal investigation and judicial expertise.

Description

Technical Field

[0001] This utility model relates to the technical field of fingerprint collection tools, and more particularly to a fingerprint extraction sticker. Background Technology

[0002] Currently, when criminal investigation departments at home and abroad collect fingerprints at crime scenes, the vast majority of them use the powder method, which involves first applying a small amount of powder to the surface of the object suspected of having fingerprints and then gently brushing it until the fingerprints are clearly visible. A piece of tape is then cut off and pasted onto the visible fingerprint, allowing the powder to adhere to the tape. The tape is then peeled off and the fingerprint is transferred to a substrate with a high contrast to the fingerprint for preservation.

[0003] Currently, ordinary tape is commonly used for data collection. However, when handling the tape, the operator's fingerprints are easily imprinted on the adhesive surface of the tape, affecting the collection results. The tape is also prone to deformation and sticking together due to the operator's movements, and it is also easy to produce bubbles, which affects the collection process. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the existing fingerprint collection tape easily adheres to the operator's fingerprints, is easily deformed and sticks together, and is prone to bubbling.

[0005] This utility model proposes a fingerprint extraction patch, including an adhesive tape with an adhesive surface on the lower surface. The middle section of the adhesive tape is a fingerprint sticking part, and the two ends are handhold parts. A release film is provided below the handhold parts. A flexible stabilizing strip is provided on the upper surface of the fingerprint sticking part, and the flexible stabilizing strip is located on the opposite sides or around the fingerprint sticking part.

[0006] Preferably, the contact surface between the stabilizing strip and the tape is flat, increasing the contact area and preventing the tape from curling.

[0007] Preferably, multiple fingerprint extraction stickers are joined end to end to form a roll, which facilitates the use of the storage box.

[0008] Furthermore, perforations are provided between adjacent fingerprint extraction patches to facilitate disconnection.

[0009] Preferably, the multiple stabilizing strips are connected end to end to form a frame structure, and the fingerprint adhesive part is located at the center of the frame structure, which facilitates fingerprint extraction.

[0010] Preferably, the width of the adhesive tape is in the range of 15mm-40mm, which is suitable for the size required for conventional fingerprint extraction.

[0011] Preferably, the width of the adhesive tape is in the range of 150mm-300mm, which is suitable for extracting other imprints such as palm prints.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model divides the adhesive tape into three parts: left, middle, and right. The left and right ends are the hand-held parts, and the middle part is the fingerprint adhesive part. Release films are set below the hand-held parts. This can effectively isolate the operator from direct contact with the adhesive surface of the fingerprint extraction tape without affecting the normal fingerprint collection operation, thus avoiding the situation where the operator's fingerprints contaminate the fingerprint extraction tape.

[0014] 2. This utility model effectively fixes the fingerprint-adhesive part of the tape by setting a stabilizing strip on the upper surface of the tape, preventing the tape from deforming and sticking together, and also effectively avoids the problem of tape deformation and bubbling during fingerprint extraction from the surface of the object bearing the fingerprint.

[0015] 3. The contact surface between the stabilizing strip and the adhesive tape in this utility model is a plane. The advantage of the plane of the strip is that it can ensure a larger contact surface between the stabilizing strip and the adhesive tape, and a tighter connection, preventing the stabilizing strip from separating from the adhesive tape when it is applied to a curved surface. Attached Figure Description

[0016] Figure 1 This is an overall schematic diagram of the present invention when the number of stabilizing strips is 2.

[0017] Figure 2 This is an overall schematic diagram of the present invention when the number of stabilizing strips is 4.

[0018] Figure 3 This is a side view of the present invention.

[0019] Figure 4 This is a schematic diagram of the left-middle-right structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the rolled form of this utility model.

[0021] Among them, 1. Adhesive tape; 2. Adhesive surface; 3. Fingerprint adhesive part; 4. Handheld part; 5. Release film; 6. Flexible stabilizing strip; 7. Perforation; 8. Frame structure. Detailed Implementation

[0022] like Figures 1-4As shown, this embodiment provides a fingerprint extraction patch, including an adhesive tape 1. The lower surface of the adhesive tape 1 is an adhesive surface 2, and a release film 5 is provided on the lower surface of the adhesive surface 2. The middle section of the lower surface of the adhesive tape 1 is a fingerprint adhesion part 3, and the two ends of the adhesive tape 1 are handhold parts 4. The release films 5 below the handhold parts 4 are independent of each other. The operator can directly pinch the handhold parts 4 to transfer the adhesive tape 1 without worrying about the operator's fingerprint being imprinted on the adhesive surface 2 below the adhesive tape 1. When transferring the adhesive tape 1 to a substrate later, the release film 5 can be peeled off to allow the adhesive tape 1 to adhere completely to the substrate for easy storage. The upper surface of the adhesive tape 1 is provided with a flexible stabilizing strip 6. In order not to affect the normal adhesion of the adhesive tape 1 to curved surfaces, the flexible stabilizing strip 6 is made of a material with a certain support strength but can be bent. Specifically, it can be made of PE polyethylene or PVC polyvinyl chloride. The flexible stabilizing strip 6 is located on two opposite sides or around the fingerprint adhesion part 3. Figure 1 The solution involves using two flexible stabilizing strips 6, one on each side of the fingerprint adhesive part 3. Figure 2 Four flexible stabilizing strips 6 are respectively set around the fingerprint adhesive part 4. The flexible stabilizing strips 6 make the tape 1 retain its flexibility, so as not to affect the tape 1's ability to adhere to most curved surfaces, while also adding a certain degree of toughness to the tape 1. This can effectively prevent the tape 1 from deforming during use and sticking together. At the same time, the flexible stabilizing strips 6 can also make the fingerprint adhesive part 3 of the tape 1 always maintain a certain tension, so even when it is used to adhere to uneven surfaces, there will be no air bubbles or wrinkles between the tape 1, which would affect the fingerprint extraction effect.

[0023] In practical implementation, the flexible stabilizing strip 6 can be fixedly connected to the upper surface of the tape 1 by means of bonding or hot pressing to ensure that it will not fall off or shift during use; the overall structure of this utility model is reasonably designed and highly practical, and can be widely used in fingerprint extraction work in criminal investigation, forensic identification and other scenarios.

[0024] The flexible stabilizing strip 6 can also be made of a transparent flexible material. The transparency of the material makes it easier for operators to observe the fingerprint adhesion and identify fingerprint features, thus improving the ease of operation.

[0025] It is worth noting that this utility model does not limit the size of the adhesive tape 1, and fingerprint extraction tapes of various sizes can be designed and manufactured according to the needs of fingerprint or palm print collection. For example, the width of the adhesive tape 1 for fingerprint extraction can be 15mm-40mm; the width of the adhesive tape 1 for palm print extraction can be 150mm-300mm.

[0026] Specific work process

[0027] When fingerprint or palm print extraction is required, after the powder application, the operator only needs to select the corresponding size fingerprint extraction sticker according to the size of the object to be collected, hold the left and right ends of the fingerprint extraction sticker with both hands, align the fingerprint adhesive part 3 with the position to be collected, and then transfer the fingerprint extraction sticker to the backing plate. Remove the release film 5 from the left and right ends of the fingerprint extraction sticker to make it completely adhere to the backing plate, thus completing the fingerprint extraction work.

[0028] Specifically, such as Figure 2 As shown, the contact surface between the flexible stabilizing strip 6 and the adhesive tape is a plane. This design ensures a larger contact surface and a tighter connection between the flexible stabilizing strip 6 and the adhesive tape 1, preventing the flexible stabilizing strip 6 and the adhesive tape 1 from separating due to insufficient adhesion when the fingerprint extraction sticker is applied to a curved surface.

[0029] Specifically, such as Figure 4 As shown, for easy carrying, the multiple fingerprint extraction stickers are joined end to end to form a roll; furthermore, perforations 7 are provided between adjacent fingerprint extraction stickers. This allows operators to use the tape 1 in segments as needed; when using it, operators can easily tear off a fingerprint extraction sticker from the roll structure. The perforation 7 design allows for more precise separation of individual stickers, avoiding waste or damage caused by improper tearing.

[0030] Furthermore, in this embodiment, the multiple flexible stabilizing strips 6 are connected end to end to form a rectangular frame structure 8. The fingerprint adhesive part 3 corresponds to the position of the rectangular frame structure 8, which not only does not hinder the subsequent observation of fingerprint features, but also effectively prevents the tape 1 from adhering together from the two mutually orthogonal directions that are most likely to stick together due to the operator's hand shaking, thus ensuring the integrity of the tape 1. It is worth noting that this utility model does not limit the shape of the frame structure 8 formed by the stabilizing strips 3, and other shapes of frame structures 8 are still within the protection scope of this utility model.

[0031] The above description is a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and concept of this utility model, should be covered within the protection scope of the claims of this utility model.

Claims

1. A fingerprint extraction patch, comprising an adhesive tape (1), wherein the lower surface of the adhesive tape (1) is an adhesive surface (2), characterized in that: The middle section of the adhesive tape (1) is the fingerprint adhesive part (3), and the two ends are the hand-held parts (4). A release film (5) is provided below the hand-held parts (4). A flexible stabilizing strip (6) is provided on the upper surface of the fingerprint adhesive part (3). The flexible stabilizing strip (6) is located on the opposite sides or around the fingerprint adhesive part (3).

2. The fingerprint extraction patch according to claim 1, characterized in that: The contact surface between the flexible stabilizing strip (6) and the tape is a plane.

3. The fingerprint extraction patch according to claim 1, characterized in that: Multiple fingerprint extraction stickers are joined end to end to form a roll.

4. A fingerprint extraction patch according to claim 3, characterized in that: Perforations (7) are provided between adjacent fingerprint extraction patches.

5. A fingerprint extraction patch according to any one of claims 1-4, characterized in that: The multiple flexible stabilizing strips (6) are connected end to end to form a frame structure (8), and the fingerprint adhesive part (3) is located at the center of the frame structure.

6. A fingerprint extraction patch according to any one of claims 1-4, characterized in that: The width of the adhesive tape (1) ranges from 15mm to 40mm.

7. A fingerprint extraction patch according to any one of claims 1-4, characterized in that: The width of the adhesive tape (1) ranges from 150mm to 300mm.

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