JP2020116264A - Adhesive sheet for identification - Google Patents

Abstract

To reliably import sampled fingerprints as necessary along with information relating to the fingerprints, while retaining an effect of easy detection ability when an evidence is falsified.SOLUTION: An adhesive sheet for identification includes a support body (1) having an adhesive layer (1b) on one surface, and a cover substrate (2) peelably and re-attachably stuck to the adhesive layer. The cover substrate includes a cut portion (2c) formed thereon such that the cover substrate is peelable from the support body into a cantilevered shape, at least, an area of the cover substrate to be peelable into the cantilevered shape is transparent and the cover substrate includes an entry colum (5) outside the area of the cover substrate to be peelable into the cantilevered shape.SELECTED DRAWING: Figure 1

Description

The present invention relates to an adhesive sheet for appraisal, which is mainly used for collecting fingerprints. More specifically, the present invention relates to a pressure-sensitive adhesive sheet for appraisal, which can prevent the tampering of the adhesive sheet for appraisal that is evidence after the fingerprint is taken, and can reliably take in the taken fingerprint together with information about the fingerprint as necessary.

Conventionally, as an adhesive sheet for appraisal used for collecting fingerprints, for example, a fingerprint is collected on one surface (back surface) of the support, and the incident number, collection date, etc. are recorded on the opposite surface (front surface). It is known that a column is provided (for example, see Patent Document 1).

The adhesive sheet for appraisal of Patent Document 1 has an entry field (surface entry field) such as a case number and date and time of collection on the side opposite to the adhesive layer on the support for collecting fingerprints. Therefore, the entry field is always integrated with the support, and the support and the entry field cannot be separated. Therefore, the evidence cannot be tampered with unless you do something rough such as cutting only the entry field of the support and replacing it, and doing so is effective because it is discovered that the evidence has been tampered with. ..

JP, 2007-181599, A

After the fingerprint is collected, when it is necessary to scan the fingerprint collected on the pressure-sensitive adhesive sheet for identification to take out the fingerprint, it is necessary to associate the fingerprint to be taken with the information written in the entry column. In such a case, in the pressure-sensitive adhesive sheet for identification of Patent Document 1, it is necessary to scan the fingerprint on the back surface, then turn over the sheet and scan the entry field on the front surface again, which is troublesome. Further, when the fingerprint and the entry field are made to correspond to each other in the scanning work, it is possible that the combination is wrong.

On the other hand, recently, a machine that can scan both sides of a document in one run has been put into practical use. In the pressure-sensitive adhesive sheet for identification of Patent Document 1, it is assumed that the position for picking up the fingerprint is approximately the center of the pressure-sensitive adhesive layer, and the surface entry field is provided in the peripheral portion in order to prevent overlapping with the fingerprint. To be In that case, if the fingerprint collection position deviates from the approximate center and overlaps with the back side of the front surface entry field, even if you scan with a device that can scan both sides, only the fingerprint can be scanned because the fingerprint and the entry field overlap on the front and back sides. Therefore, it may be difficult to reliably take out the fingerprint.

Therefore, the present invention prevents the fingerprint and the entry field from overlapping on the front and back while maintaining the effect of being easily detected when evidence is tampered with, and ensures that the fingerprint collected with the information about the fingerprint is collected as necessary. It is an object of the present invention to provide a pressure-sensitive adhesive sheet for identification that can be incorporated into

In order to solve the above-mentioned problems, the pressure-sensitive adhesive sheet for appraisal according to one aspect of the present invention is a support having a pressure-sensitive adhesive layer on one surface, and a cover substrate that is adhered to the pressure-sensitive adhesive layer in a peelable and re-stickable manner. And a cut portion is formed on the cover base material so that the cover base material can be cantilevered from the support, and at least the cover base material can be peeled cantilevered. The region to be formed is transparent, and in the cover base material, an entry column is provided outside the region where the cover base material can be peeled in a cantilever manner.

In the cover substrate, the cantilevered region of the cover substrate has a quadrilateral shape, and three sides of the quadrilateral region are formed by the cut portion 2c, and the quadrilateral region has three sides. The remaining one side may be formed by a sewing machine portion that intermittently penetrates the cover base material.

In the quadrilateral region of the cover base material, a corner that is a boundary between the cut portion and the sewing machine portion may be provided with a barb that is an arcuate cut.

In the cover base material, a narrow frame may be present between the outer peripheral edge of the cover base material and the quadrilateral region of the cover base material, and a cut may be made in the frame.

The cover base material includes a transparent base material and a release agent layer provided on the surface of the transparent base material on the support body side, and is peeled off on the surface of the transparent base material opposite to the support body. The agent layer may not be provided.

A carbon-containing black printing layer and an antistatic varnish layer may be provided on the opposite side of the surface of the support to which the cover substrate is bonded.

According to the appraisal pressure-sensitive adhesive sheet according to each aspect of the present invention, while maintaining the effect that it is easy to be detected when evidence is tampered with, prevent fingerprints and entry fields from overlapping on the front and back, if necessary. It is possible to reliably capture the collected fingerprint together with information about the fingerprint.

It is sectional drawing of the adhesive sheet for appraisal which concerns on embodiment of this invention. It is an example of the top view of the adhesive sheet for appraisal which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing an embodiment of the pressure-sensitive adhesive sheet for identification according to the embodiment of the present invention, and FIG. 2 is an example of a plan view of the pressure-sensitive adhesive sheet for identification according to the embodiment of the present invention. 1A shows a state in which the pressure-sensitive adhesive sheet cover base material for identification is closed before use (before fingerprinting), and FIG. 1B shows a state in which the cover base material is opened when fingerprints are collected. FIG. 1C shows a state in which the cover base material is closed (sealed) after fingerprinting.

As shown in FIG. 1A, the pressure-sensitive adhesive sheet for identification of the present embodiment includes a support 1 having a transparent base material 1a and a transparent pressure-sensitive adhesive layer 1b provided on the surface (upper surface) thereof, and a transparent base material. 2b and the cover base material 2 provided with the release agent layer 2a provided on the back surface (lower surface) thereof. The release agent layer 2a of the cover substrate 2 is adhered to the transparent pressure-sensitive adhesive layer 1b of the support 1 so as to be peelable and re-stickable.

A black print layer 3 and an antistatic varnish layer 4 are provided on the back side (lower side) of the transparent substrate 1a. The black printing layer 3 is a layer in which black ink containing carbon is applied (printed) on the back surface of the transparent substrate 1a. By containing carbon, there is an antistatic effect, and it is possible to prevent the sheets from becoming difficult to separate from each other when a plurality of identification pressure-sensitive adhesive sheets are stacked and stored, or to prevent dust from adhering. Although the antistatic varnish layer 4 may not be provided, the antistatic effect can be enhanced by further providing the antistatic varnish layer 4. Furthermore, it is more preferable to provide the transparent base material 2b with an antistatic function because it becomes easy to separate the plurality of appraisal pressure-sensitive adhesive sheets when they overlap each other. The black print layer 3 also has an effect of making the collected fingerprint 6 easy to see.

The transparent pressure-sensitive adhesive layer 1b is made of a pressure sensitive pressure-sensitive adhesive or the like, and when the cover substrate 2 is peeled from the support 1, the transparent pressure-sensitive adhesive layer 1b is exposed as shown in FIG. 1(b). By touching the exposed portion of the transparent pressure-sensitive adhesive layer 1b with a human finger or the like, the pressure-sensitive adhesive or the like can well follow irregularities such as fingerprints, and the fingerprints or the like can be collected.

As the transparent substrate 1a and the transparent substrate 2b, for example, a polyester film such as a polyethylene terephthalate film can be used. The transparent base material 1a and the transparent base material 2b only need to have transparency to the extent that fingerprints and the like can be discriminated, but higher transparency is preferable because the discrimination characteristics such as fingerprints are improved. It is sufficient that at least the transparent base material 2b of the cover base material 2 that can be peeled off in a cantilevered manner (cut portion 21) described below is transparent.

As shown in FIGS. 1 and 2, a quadrilateral notch 21 is formed in the cover base material 2. Three sides of the cut portion 21 are formed by a cut portion (cut line) 2c that continuously penetrates the cover base material 2 (the transparent base material 2b and the release agent layer 2a), and the remaining one side of the cut portion 21 is a cover base. The material 2 (the transparent base material 2b and the release agent layer 2a) is formed by a sewing machine portion (sewing line) 2d which penetrates intermittently. That is, the cut portion 2c is a U-shaped cut.

The cover base material 2 can be peeled from the support 1 in the cut portion 21 by lifting the cover base material 2 from the cut portion 2c with a hand or the like (cantilevered). That is, as shown in FIG. 1B, when the cover base material 2 surrounded by the three sides of the cut portion 2c is peeled off from the support body 1 and rolled up, the cover base material 2 is supported on one side of the sewing machine portion 2d. With the body 1 connected, the transparent pressure-sensitive adhesive layer 1b of the quadrilateral notch 21 can be exposed. As a result, a fingerprint or the like can be collected with the cover substrate 2 separated from the support 1 being held by a hand or the like (cantilevered).

It should be noted that the sewing machine portion 2d does not easily return to the original state when the cover base material 2 is peeled off from the support 1 and rolled up, and the peeled and rolled up state (state of FIG. 1(b)) is maintained as much as possible. It is configured to be able to.

An entry field 5 is provided on the outside (the left side in FIG. 1 and the upper side in FIG. 2) of the sewing section 2d of the cover base material 2. The entry field 5 is a display field for displaying information about a fingerprint such as an incident name, a victim name, a collector name, and a collaborator name. The entry field 5 is composed of a white ink layer 51, a writing varnish layer 52 and a black layer (printing layer) 53 applied thereon. The white ink layer 51 is formed by solid white printing. The writing varnish layer 52 has a structure in which information can be written using the pen 7 or the like, and is provided only in a region where information is written.

As the flow for collecting fingerprints with the adhesive sheet for appraisal of the present embodiment, as described above, the cover base material 2 surrounded by the cut portions 2c is rolled up, and the exposed transparent adhesive layer 1b is touched with a finger or the like. After collecting the fingerprints 6, the cover base material 2 is returned to its original state (reattached), and the information on the fingerprints of the relevant incident name, victim, collector, collaborator, etc. may be entered in the entry field 5.

At this time, even if the collaborator who presses the finger on the transparent adhesive layer 1b for collecting the fingerprint presses the finger on any part where the cover base material is cantilevered, the collected fingerprint 6 does not overlap with entry field 5. Therefore, when the collected fingerprint 6 is scanned later, the collected fingerprint 6 can be reliably scanned.

Also, since the entry column 5 and the collected fingerprint 6 can be scanned as a set by scanning only from the transparent base material 2b side, even if the device is capable of scanning only one side, the information of the collected fingerprint 6 and the entry column 5 is included in the scanning operation. There is no mistake in the correspondence of.

In addition, as shown in FIG. 2, generally, a plurality of quadrilateral notches 21 are formed on the cover base material 2, and each of the plurality of notches 21 corresponds to a fingerprint of a different finger. Further, the three sides of the quadrilateral cut portion 21 are always formed by the cut portion 2c, and therefore, a narrow frame 22 is inevitably formed between the outer peripheral edge of the cover substrate 2 and the cut portion 2c. Exist.

In addition, in each of the cut portions 21, a corner 23 of the quadrangle that is a boundary between the cut portion 2c and the sewing portion 2d is provided with a barb 23 that is an arc-shaped cut. This prevents the cover substrate 2 from being cut further upward from the cut portion 2c due to excessive force. The notch of the barb 23 may be provided from the corner of the quadrilateral toward the outside or inside (left side and right side).

In the pressure-sensitive adhesive sheet for identification of the present embodiment, the support 1 and the cover base material 2 are adhered to each other so that they can be peeled off and reattached. Since the entry field 5 is on the cover base material 2, if the fingerprint 6 is collected on the support 1 and then the cover base 2 is peeled off and another support 1 on which another fingerprint is collected can be neatly attached. It is theoretically possible to falsify the evidence such that the collaborator who actually got the fingerprint and the collaborator described in the entry field 5 do not match.

However, since the cover base material 2 has a cantilevered cut (cut portion 2c), when the cover base material 2 is peeled off about half from the support 1, the portion surrounded by the cut portion 2c becomes free, It becomes disjointed with the surrounding surface (the outer surface of the cut portion 2c), and it is difficult to make the inner surface and the outer surface of the cut portion 2c flush with each other.

Further, in order to re-attach the cover base material 2 to another support 1, the inside surface and the outside surface of the cut portion 2c of the cover base material 2 are aligned (at least at the cover base material 2). It is necessary to attach the outer edge of the cover base material 2 in alignment with the outer edge of the support 1 while maintaining a gap between the inner surface and the outer surface of the cut portion 2c). However, such a work is actually very difficult.

If a gap is formed between the outer surface and the inner surface of the cover base material 2, the edge of the cover base material 2 and the edge of the support body 1 will not match. In other words, if the edges are not aligned while maintaining the state where there is no gap, the state before the replacement is not restored, which is a very difficult work in practice.

In particular, once the frame 22 having a narrow width is peeled off, the frame 22 tends to be curled without maintaining its planar shape, and it is difficult to re-attach it. Further, depending on the direction and strength of the force applied, there is a high possibility that the cover base material 2 will be cut starting from the cut of the barbs 23, and if it is cut, it is impossible to restore the original state.

Further, the release agent layer 2a is provided only on the back surface (lower surface, support 1 side) of the transparent base material 2b, and is not provided on the front surface of the transparent base material 2b. Therefore, when the cover base material 2 is illegally replaced with another support body 1, if the transparent pressure-sensitive adhesive layer 1b touches the surface of the transparent base material 2b, the transparent adhesive layer 1b strongly adheres (sticks) and should be peeled off cleanly. Is difficult.

As described above, in the pressure-sensitive adhesive sheet for identification of the present embodiment, the entry field 5 is on the front side of the cover base material 2 (the side from which the fingerprint is collected), but the evidence cannot be practically falsified. Further, since the transparent adhesive layer 1b is exposed in the cantilevered opening of the cut portion 21 and the entry field 5 is provided outside the exposed portion of the transparent adhesive layer 1b, the transparent adhesive layer 1b is Even if the fingerprint 6 is collected at the portion, the collected fingerprint 6 and the entry field 5 do not overlap. Therefore, the collected fingerprint 6 can be reliably scanned later. Further, in the pressure-sensitive adhesive sheet for identification of the present embodiment, the collected fingerprint 6 and the entry field 5 can be scanned at once by scanning once from the front side (fingerprint collecting surface side). Therefore, the combination of the collected fingerprint 6 and the entry field 5 is not mistaken.

Further, the pressure-sensitive adhesive sheet for identification of the present embodiment is composed of the support 1 and the cover base material 2, and does not require high-quality paper or a protective sheet for protecting the pressure-sensitive adhesive layer before fingerprint collection (before use). In addition, before fingerprint collection and after fingerprint collection (after use), the entire surface of the support 1 and the cover base material 2 are in close contact with each other via an adhesive. Therefore, there is no possibility that the protective sheet or the like, which is only partially adhered with the adhesive, floats and sandwiches another sheet, or the protective sheet is broken or removed and the sheet itself cannot be used.

In the pressure-sensitive adhesive sheet for identification of the present embodiment, the cover base material 2 is once peeled from the support 1 at the fingerprint collecting portion to collect the fingerprint, and then the cover base material 2 is returned to the original state to protect the collected fingerprint 6. Therefore, a high-quality paper or the like for protecting the adhesive layer before fingerprint collection is unnecessary, and there is no waste of discarding the high-quality paper or the like for protecting the adhesive layer after fingerprint collection. Since the high-quality paper that protects the adhesive layer before fingerprint collection is not discarded, there will be a step between the part where the quality paper remains and the fingerprint collection part (the part where the quality paper is discarded) after fingerprint collection. There is no. Therefore, it is possible to prevent air from entering between the support 1 and the cover base material 2, and it is difficult to form a gap, so that the fingerprints 6 taken can be easily seen.

In the present specification, terms such as "front, back, top, bottom, right, left, vertical, horizontal, vertical, horizontal, front and back" are used to describe these directions in the article of the present invention. I'm using it. Therefore, these terms used to describe the specification of the present invention should be construed relatively in the articles of the present invention.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments and modifications thereof. Additions, omissions, substitutions, and other changes can be made to the configuration without departing from the spirit of the present invention.

For example, a break 24 may be formed in the frame 22. If this is done, when an attempt is made to peel off the portion of the frame 22, the frame 22 will be cut off and the original state cannot be restored.

Further, in the above-described embodiment, an example in which fingerprints are collected has been described, but the application of the pressure-sensitive adhesive sheet of the present invention is not limited to fingerprint collection. For example, the pressure-sensitive adhesive sheet of the present invention can be used for collecting relics (hair, etc.) on site.

1... Support, 1a... Transparent base material, 1b... Transparent adhesive layer, 2... Cover base material, 2a... Release agent layer, 2b... Transparent base material, 2c... Cut part, 2d... Sewing part, 3... Ink printing Layers, 4... Antistatic varnish layer, 5... Entry fields, 21... Notches (regions of the cover substrate that can be peeled in a cantilever manner, quadrilateral regions), 22... Frames, 23... Return, 24... Cuts , 51... White ink layer, 52... Writing varnish layer, 53... Black layer, 6... Collected fingerprint, 7... Pen

Claims (6)

A support having an adhesive layer on one side,
A cover base material that is adhered to the pressure-sensitive adhesive layer so that it can be peeled off and re-attached,
Have
A cut portion is formed in the cover base material so that the cover base material can be cantilevered from the support, and at least a region of the cover base material that can be detached cantilevered is transparent. Yes,
The pressure-sensitive adhesive sheet for appraisal, wherein in the cover base material, an entry field is provided outside the area where the cover base material can be peeled off in a cantilever manner. In the cover substrate, the cantilevered region of the cover substrate has a quadrilateral shape, and three sides of the quadrilateral region are formed by the cut portion 2c, and the quadrilateral region has three sides. The pressure-sensitive adhesive sheet for appraisal according to claim 1, wherein the remaining one side is formed by a sewing machine portion that intermittently penetrates the cover base material. In the quadrilateral region of the cover base material, a corner that is a boundary between the cut portion and the sewing machine portion is provided with a barb that is an arcuate cut. Item 2. The adhesive sheet for appraisal according to Item 2. In the cover base material, a narrow frame is present between an outer peripheral edge of the cover base material and the quadrilateral region of the cover base material, and a cut is made in the frame. The pressure-sensitive adhesive sheet for appraisal according to claim 2 or 3. The cover substrate is
A transparent substrate,
A release agent layer provided on the support-side surface of the transparent substrate,
Equipped with
The pressure-sensitive adhesive sheet for appraisal according to any one of claims 1 to 4, wherein a release agent layer is not provided on the surface of the transparent substrate opposite to the support. 6. A black printing layer containing carbon and an antistatic varnish layer are provided on the opposite side of the surface of the support to which the cover base material is adhered, according to any one of claims 1 to 5. The pressure-sensitive adhesive sheet for appraisal according to item 1.

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