JP7351162B2 - inspection sticker - Google Patents

Description

The present invention relates to an inspection seal used for image diagnosis using microwaves.

Mammography using microwaves has been proposed as a breast cancer testing method (see, for example, Patent Document 1). Mammography using microwaves does not require compression of the breast being examined, so the patient does not feel any pain during the examination. Furthermore, mammography using microwaves does not use X-rays, so the subject is not exposed to radiation.

Mammography using microwaves scans the entire breast with a probe. At this time, a tattoo sticker with a coordinate grid printed on it is affixed to the breast so as not to miss a scan. A tattoo sticker includes an adhesive layer and an image-receiving layer (see, for example, Patent Documents 2 and 3). A coordinate grid is formed on the image receiving layer using an inkjet printer or the like.

International Publication No. 2017/057524 Japanese Patent Application Publication No. 2006-130865 Japanese Patent Application Publication No. 2000-160111

By the way, tattoo stickers are easily torn, so if wrinkles occur in the tattoo sticker when it is applied to an object to be inspected, it is difficult to peel off the tattoo sticker to remove the wrinkles and then apply it again. In particular, in order to apply a tattoo sticker to the entire breast, the area of the tattoo sticker becomes large, which increases the possibility that wrinkles will occur in the tattoo sticker. Note that these matters are common not only when the subject of examination is the breast, but also when the subject is other parts of the human body.

SUMMARY OF THE INVENTION An object of the present invention is to provide an inspection sticker that can be easily attached to an object to be inspected.

An inspection seal for solving the above problem is an inspection seal used for image diagnosis using microwaves. It includes a base film that has scanning indicators and is attached to an object to be inspected. The base film has a tensile elongation at break of 130% or more and a tensile strength at 100% elongation of 4 N/cm or less.

According to the above configuration, the inspection sticker has a tensile elongation at break and a 100% elongation tensile strength suitable for attachment to an inspection target. Therefore, according to the inspection sticker, it is easy to attach it to the inspection target.

In the inspection sticker, the base film is a fluidized bed made of an aliphatic hydrocarbon that transmits microwaves more than water, and has a viscosity that allows the base film to be attached to the inspection target. It may further include the fluidized bed stacked on top of each other.

According to the above configuration, it is possible to omit the step of applying a chemical to the test object for applying a base film to the test object, so that it becomes easier to apply the base film to the test object.

In the inspection seal, the shear viscosity of the fluidized bed at 30°C,
The shear viscosity defined in Z 8803:2011 may be 1000 mPa·s or more and 200000 mPa·s or less.

According to the above configuration, since the shear viscosity is 1000 mPa·s or more, it is possible to increase the reliability with which the fluidized bed attaches the base film to the inspection target. On the other hand, by having a shear viscosity of 200,000 mPa·s or less, wrinkles and sagging of the base film can be suppressed when a fluidized layer is formed on the base film by coating.

In the inspection seal, the fluidized bed may be formed of at least one selected from the group consisting of paraffin, squalane, and ceresin. According to the above configuration, the fluidized bed can reliably transmit microwaves and reduce irritation to the subject's skin.

The inspection seal further includes an adhesive layer laminated on the base film, and the adhesive layer has a thickness of 5 μm or more and 25 μm or less, and the inspection seal further includes a lamination of the base film and the adhesive layer. In the body, the moisture permeability specified in JIS Z 0208 may be 750 g/m ² ·day or more under the conditions of 40° C. and 90% relative humidity. According to this configuration, since the moisture permeability of the test sticker satisfies the above range, sweating in the test object can be suppressed when the test sticker is attached to the test object.

An inspection seal for solving the above problem is an inspection seal used for image diagnosis using microwaves. The present invention includes a base film having an index for guiding a scanning position on an inspection object, and an adhesive layer laminated on the base film, the adhesive layer having a thickness of 5 μm or more and 25 μm or less. In the inspection seal, the laminate of the base film and the adhesive layer has a tensile elongation at break defined by JIS K 7127 of 130% or more, and a 100% elongation tensile stress of 10 MPa.

According to the above configuration, the inspection sticker has a tensile elongation at break suitable for attachment to an inspection object and a 100% elongation tensile stress. Therefore, according to the inspection sticker, it is easy to attach it to the inspection target.

In the inspection seal, the moisture permeability specified by JIS Z 0208 may be 750 g/m ² ·day or more under the conditions of 40° C. and 90% relative humidity. According to this configuration, since the moisture permeability of the test sticker satisfies the above range, sweating in the test object can be suppressed when the test sticker is attached to the test object.

In the inspection seal, the base film has a pair of surfaces facing each other, one of the pair of surfaces is a guide surface on which the indicator is printed, and the adhesive layer covers the guide surface. It's okay.

According to the above configuration, since the guide wire is sandwiched between the base film and the adhesive layer, the guide wire does not constitute the outer surface of the inspection seal. Therefore, the guide wire is difficult to peel off from the inspection sticker.

In the above inspection sticker, a separate film is releasably laminated on the surface of the base film opposite to the guide surface, and a separate film is laminated on the adhesive layer on the opposite side to the surface in contact with the base film. and a protective film that is removably laminated with a protective film, and a portion of the laminate of the separate film, the base film, and the adhesive layer other than the indicator, which has a total light ray specified in JIS K 7361-1. The transmittance may be 30% or more.

According to the above structure, the total light transmittance is 30% or more in the laminate of the separate film, the base film, and the adhesive layer except for the guide wire. Therefore, when attaching the inspection sticker to the inspection target, it is possible to adjust the position of the inspection sticker relative to the inspection target while visually checking the position of the guide wire relative to the inspection target by simply peeling off the protective film from the adhesive layer. It is possible.

In the above inspection sticker, the indicator is a coordinate grid including a plurality of grid lines extending along the scanning direction and arranged in a direction intersecting the scanning direction, and in the plurality of grid lines, a first Grid lines of a color and grid lines of a second color different from the first color may be arranged alternately.

According to the above configuration, when the tester scans the probe along the scan direction, the tester scans along the grid lines having the first color and scans along the grid lines having the second color. can be done alternately. This prevents the person conducting the inspection from scanning the same grid line multiple times or from omitting the scan of a certain grid line. That is, it is possible to reduce scanning errors by the person conducting the test.

The inspection sticker may further include a mark indicating a predetermined coordinate in the coordinate grid. According to the above configuration, when using the inspection sticker, it is possible to superimpose predetermined coordinates on a specific position of the inspection target.

In the inspection seal, the base film is made of a polyurethane resin, and the polyurethane resin is at least one selected from the group consisting of an ether polyurethane resin, an ester polyurethane resin, and a carbonate polyurethane resin. may include. According to the above configuration, it is possible to obtain a base film with high lamination suitability.

According to the present invention, it is possible to easily attach it to an object to be inspected.

FIG. 2 is a cross-sectional view showing the structure of a first example of the inspection seal in the first embodiment. FIG. 7 is a sectional view showing the structure of a second example of the inspection seal in the first embodiment. FIG. 3 is a plan view showing the structure of the inspection seal in plan view facing the surface of the base film. FIG. 3 is a cross-sectional view showing the structure of a laminate when the inspection seal of the first example is used. The structure of a laminate when the inspection seal of the second example is used. A schematic diagram for explaining how to use an inspection seal. A table showing measurement results and evaluation results of examples and comparative examples of the first embodiment. FIG. 7 is a cross-sectional view showing the structure of an inspection seal in a second embodiment. FIG. 3 is a cross-sectional view showing the structure of a laminate when an inspection seal is used. A schematic diagram for explaining how to use an inspection seal. 12 is a table showing measurement results and evaluation results of examples and comparative examples of the second embodiment. 12 is a table showing measurement results and evaluation results of examples and comparative examples of the second embodiment.

[First embodiment]
A first embodiment of the inspection seal will be described with reference to FIGS. 1 to 7. Below, the configuration of the inspection seal, how to use the inspection seal, and examples will be explained in order.

[Configuration of inspection sticker]
The configuration of the inspection seal will be described with reference to FIGS. 1 to 3. Below, the configuration of a first example of the inspection seal will be explained with reference to FIG. 1, and the configuration of a second example of the inspection seal will be explained with reference to FIG. Thereafter, with reference to FIG. 3, a configuration common to the first example of the inspection seal and the second example of the inspection seal will be described.

The inspection seal 10 shown in FIG. 1 is a seal used for mammography, which is an example of image diagnosis using microwaves. The inspection sticker 10 is a sticker that is affixed to the breast, which is the object of examination, in mammography.

The first example of the inspection seal 10 includes a base film 11. The base film 11 is a film that has a coordinate grid 12 for guiding the scan position on the inspection object and is attached to the inspection object. The coordinate grid 12 is an example of a scan index. The base film 11 of this embodiment satisfies the following two conditions.
(Condition 1-1) Tensile elongation at break is 130% or more.
(Condition 1-2) 100% elongation tensile strength is 4 N/cm or less.

The inspection sticker 10 has a tensile elongation at break and a tensile strength at 100% elongation suitable for attachment to an object to be inspected. Therefore, according to the inspection sticker 10, it is easy to attach it to the inspection target.

The tensile elongation at break can be determined in accordance with JIS K 7161-1:2014 (ISO 527-1) and JIS K 7127:1999 (ISO 527-3). If the object to be measured does not have a yield point, measure the tensile strain at break, and if it has a yield point, measure the nominal strain at break, and use these measured values to determine the tensile elongation at break. can.

100% elongation tensile strength is the magnitude of the force measured when the strain defined in JIS K 7161-1:2014 (ISO 527-1) reaches the specified value (100%). This is the value divided by. The 100% elongation tensile strength (T) (N/cm) can be determined by the following formula.

T = F/W
In addition, in the above formula, F is the magnitude of the measured force (N), and W is the width (cm) of the test piece.

It is preferable that the base film 11 further satisfy the following conditions.
(Condition 1-3) It has a transmittance of 70% or more for microwaves having a frequency of 2 GHz.

In mammography using the inspection seal 10, a probe that oscillates microwaves with a frequency of 2 GHz is used. Since the base film 11 has a transmittance of 70% or more for 2 GHz microwaves, it is possible to suppress attenuation of the microwaves emitted from the probe. This increases the accuracy of the image obtained as a result of scanning. As a result, the accuracy of image diagnosis is improved.

The polyurethane resin for forming the base film 11 includes at least one selected from the group consisting of ether polyurethane resin, ester polyurethane resin, and carbonate polyurethane resin. Thereby, it is possible to obtain a base film 11 with high lamination suitability.

Ether-based polyurethane resin is a polyurethane resin produced using ether-based polyol containing an ether bond (-O-). Ester-based polyurethane resin is a polyurethane resin produced using ester-based polyol containing an ester bond (-COO-). Carbonate-based polyurethane resin is a polyurethane resin produced using a polyol containing a carbonate bond (-OC(=O)O-). The thickness of the base film 11 may be, for example, 5 μm or more and 30 μm or less.

The base film 11 has a pair of surfaces facing each other. The pair of surfaces includes a front surface 11F and a back surface 11R. In this embodiment, the coordinate grid 12 is located on the back surface 11R. Base film 11 is transparent or semitransparent. In a portion of the base film 11 excluding the coordinate grid 12, the total light transmittance defined in JIS K 7361-1 is preferably 30% or more, more preferably 50% or more.

The inspection seal 10 further includes a separate film 13 and a protective film 14. Separate film 13 is peelably laminated on surface 11F of base film 11. The protective film 14 is peelably laminated on the back surface 11R of the base film 11. In the portion of the inspection seal 10 excluding the coordinate grid 12, the total light transmittance defined in JIS K7361-1 is preferably 30% or more, more preferably 50% or more.

The protective film 14 covers the back surface 11R. As a result, the coordinate grid 12 is sandwiched between the base film 11 and the protective film 14, so that the coordinate grid 12 does not constitute the outer surface of the inspection seal 10. Therefore, the coordinate grid 12 is difficult to peel off from the base film 11. The protective film 14 covers the entire base film 11 when viewed from the direction in which the base film 11 and the protective film 14 overlap. In the protective film 14, the surface in contact with the base film 11 is the front surface 14F, and the surface facing the front surface 14F is the back surface 14R. The protective film 14 has a thickness that covers the entire coordinate grid 12 and makes the back surface 14R a substantially flat surface. The protective film 14 is transparent or semitransparent. The total light transmittance of the protective film 14 is preferably 30% or more, more preferably 50% or more.

In the portion of the inspection seal 10 excluding the coordinate grid 12, the total light transmittance is 30% or more. Therefore, when attaching the inspection sticker 10 to the breast, it becomes easier to visually confirm the position of the coordinate grid 12 with respect to the breast. Therefore, it is possible to adjust the position of the inspection seal 10 with respect to the breast while checking the position of the coordinate grid 12 with respect to the breast. In addition, if the total light transmittance of the inspection sticker 10 is 30% or more, after pasting the base film 11 on the breast, the position of the mole or stain on the breast can be checked visually or with a camera through the base film 11. It is easy to identify by Since the position of a mole or spot on the breast does not change, the position of the mole or spot on the breast is important in identifying the location of the lesion on the breast.

In the inspection sticker 10, a base film 11 is attached to the subject. In the inspection seal 10, the base film 11 is sandwiched between a separate film 13 and a protective film 14 in the thickness direction of the base film 11. Therefore, the base film 11 is protected from the outside by the separate film 13 and the protective film 14 until just before the base film 11 is attached to the subject. Therefore, the base film 11 is kept clean until it is applied to the subject.

The separate film 13 and the protective film 14 are preferably transparent or translucent synthetic resin films. Each film 13, 14 is composed of, for example, a base film and a release layer. The release layer is laminated on the base film. The release layer of the separate film 13 is in contact with the surface 11F of the base film 11. Further, the release layer of the protective film 14 is in contact with the back surface 11R of the base film 11. The base film may be, for example, a polyethylene terephthalate (PET) film. The release layer may be, for example, a layer made of silicone resin. Note that each of the films 13 and 14 may be composed only of a base film, and the surface of the base film that comes into contact with other layers may be processed to improve releasability.

A part of the separate film 13 may be subjected to a half-cut process. In other words, the separate film 13 may have a cut extending from the surface to the middle of the separate film 13 in the thickness direction of the separate film 13. Note that in the separate film 13, the surface opposite to the surface in contact with the base film 11 is the front surface.

As shown in FIG. 2, the second example of the inspection seal 10 further includes a fluidized bed 15 in addition to the base film 11, the separate film 13, and the protective film 14. The fluidized bed 15 is made of aliphatic hydrocarbon that transmits microwaves more than water, and is laminated on the base film 11 to have a viscosity that allows the base film 11 to be attached to the breast. That is, the microwave transmittance in the fluidized bed 15 is higher than the microwave transmittance in water. This makes it possible to omit the step of applying a drug to the test subject for attaching the base film 11 to the breast, making it easier to attach the base film 11 to the breast.

In the second example of the inspection seal 10, it is more preferable that the laminate of the base film 11 and the fluidized bed 15 satisfy conditions 1-3 described above. Thereby, when the base film 11 is attached to the inspection object via the fluidized bed 15, it is possible to suppress attenuation of the microwaves oscillated from the probe. Therefore, the accuracy of the image obtained as a result of the scan is increased. As a result, the accuracy of image diagnosis is improved.

The fluidized bed 15 is made of an ointment-like aliphatic hydrocarbon. In this embodiment, the fluidized bed 15 covers the back surface 11R of the base film 11. As a result, the coordinate grid 12 is sandwiched between the base film 11 and the fluidized bed 15, so that the coordinate grid 12 does not constitute the outer surface of the inspection seal 10. Therefore, the coordinate grid 12 is difficult to peel off from the base film 11.

The fluidized bed 15 is located between the base film 11 and the protective film 14 in the thickness direction of the inspection seal 10. In the fluidized bed 15, the surface in contact with the base film 11 is the front surface 15F, and the surface opposite to the front surface 15F is the back surface 15R. The fluidized bed 15 has a thickness that covers the entire coordinate grid 12 and makes the back surface 15R a substantially flat surface. The fluidized bed 15 is transparent or translucent.

In the fluidized bed 15, the shear viscosity at 30° C. is preferably 1000 mPa·s or more and 200000 mPa·s or less. In the fluidized bed 15, the shear viscosity at 30° C. is more preferably 5000 mPa·s or more and 50000 mPa·s or less. The shear viscosity is defined in JIS Z8803:2011.

By having a shear viscosity of 1000 mPa·s or more, it is possible to increase the reliability with which the fluidized bed 15 attaches the base film 11 to the breast. On the other hand, by having a shear viscosity of 200,000 mPa·s or less, generation of wrinkles or sagging in the base film 11 can be suppressed when the fluidized layer 15 is formed on the base film 11 by coating. In addition, by setting the shear viscosity to 200,000 mPa·s or less, the stickiness of the fluidized bed 15 is suppressed from giving discomfort to the subject, and the fluidized bed 15 is suppressed from becoming difficult to wipe off.

The fluidized bed 15 is preferably made of at least one selected from the group consisting of paraffin, squalane, and ceresin. These materials allow the fluidized bed 15 to reliably transmit microwaves and reduce irritation to the subject's skin.

As shown in FIG. 3, the coordinate grid 12 includes a plurality of grid lines 12A. Each grid line 12A extends along the scan direction DS, and the plurality of grid lines 12A are lined up along the arrangement direction DA that intersects the scan direction DS. In this embodiment, the left-right direction of the page is the scan direction DS. The scan direction DS is the direction in which a test subject, such as a doctor or a test technician, scans a test object using a probe in mammography. Furthermore, in this embodiment, the arrangement direction DA is the vertical direction of the page. The arrangement direction DA is a direction perpendicular to the scan direction DS. In the plurality of grid lines 12A, first grid lines 12A1 of a first color and second grid lines 12A2 of a second color different from the first color are arranged alternately.

The first grid line 12A1 may be, for example, red, and the second grid line 12A2 may be, for example, blue. Note that the first color that is the color of the first grid line 12A1 and the second color that is the color of the second grid line 12A2 are not limited to red and blue, but can be arbitrarily set as long as they are different from each other. It is possible to do so.

The coordinate grid 12 further includes a plurality of grid lines 12B that extend along the arrangement direction DA and are lined up along the scan direction DS. The plurality of grid lines 12B form a square lattice together with the plurality of grid lines 12A described above when viewed from the direction facing the plane in which the inspection seal 10 spreads. In each grid line 12B, first sections 12B1 and second sections 12B2 are arranged alternately. In the arrangement direction DA, a first section 12B1 and a second section 12B2 are separated by each section sandwiched between one first grid line 12A1 and one second grid line 12A2. The first section 12B1 has a first color, similar to the first grid line 12A1. The second section 12B2 has a second color, similar to the second grid line 12A2.

Coordinate grid 12 further includes location markers 12C. In this embodiment, the position marker 12C is a number used to specify a position on the coordinate grid 12. The position marker 12C includes, for example, a plurality of numbers arranged along the scanning direction DS. The plurality of numbers are located outside of the first grid line 12A1 located at the end in the arrangement direction DA. Each number is located between two grid lines 12B in the scanning direction DS, or is located outside of the grid line 12B located at the end. The position marker 12C includes, for example, a plurality of numbers arranged along the arrangement direction DA. The plurality of numbers are located outside of the grid line 12B located at the end in the scanning direction DS. Each number is located between two grid lines 12A in the arrangement direction DA. Note that the position indicator 12C is not limited to a plurality of numbers, and may include, for example, a plurality of characters.

Since the coordinate grid 12 includes the position mark 12C, the accuracy of the test may be further improved by the person conducting the test referring to the position mark 12C. Further, when a lesion is found in the breast, the position marker 12C can be used to specify the position of the lesion in the breast.

The coordinate grid 12 is printed on the back surface 11R of the base film 11 using ink. Any ink capable of printing on the base film 11 can be used as the ink for printing the coordinate grid 12.

The inspection sticker 10 further includes a marker 16 indicating a predetermined position on the coordinate grid 12. In this embodiment, the predetermined position is the center of the coordinate grid 12. The marker 16 is a circular point located in the center of the coordinate grid 12. The shape of the marker 16 is not limited to a circular shape, and can be arbitrarily set. Further, the marker 16 may be composed of a plurality of parts spaced apart from each other. Furthermore, the marker 16 may be placed at a position offset from the center of the coordinate grid 12 as long as it indicates the center of the coordinate grid 12. Like the coordinate grid 12, the mark 16 may be printed on the back surface 11R of the base film 11 using ink.

[How to use the inspection sticker]
A method of using the inspection seal 10 will be described with reference to FIGS. 4 to 6. With reference to FIG. 4, a method of using a first example of the test seal 10 will be described, and a method of using a second example of the test seal 10 will be described with reference to FIG.

As shown in FIG. 4, when using the first example of the inspection sticker 10, the user first peels off the separate film 13 and the protective film 14 from the base film 11. When using the first example of the inspection sticker 10, the separate film 13 may be peeled off before the protective film 14, or the protective film 14 may be peeled off before the separate film 13.

In addition, when using the first example of the inspection seal 10, an aliphatic hydrocarbon having an ointment shape similar to the material constituting the fluidized bed 15 is applied to the breast of the subject. Then, the base film 11 is attached to the breast via an ointment-like aliphatic hydrocarbon. In order to perform the inspection smoothly, it is preferable to apply an ointment-like aliphatic hydrocarbon to the breast before peeling off the separate film 13 and the protective film 14 from the base film 11. When using the first example of the inspection sticker 10, it is more preferable that the laminate of the aliphatic hydrocarbon and base film 11 applied to the breast satisfy the conditions 1-3 described above.

Further, as shown in FIG. 5, when using the second example of the inspection seal 10, the user peels off the separate film 13 from the base film 11 and peels off the protective film 14 from the fluidized layer 15. Note that, as in the case of using the first example of the inspection sticker 10, the separate film 13 may be peeled off before the protective film 14, or the protective film 14 may be peeled off before the separate film 13.

As shown in FIG. 6, whether the first example of the inspection seal 10 or the second example of the inspection seal 10 is used, the base is The film 11 is attached to the breast B of the subject S. At this time, the inspection sticker 10 is pasted on the breast B so that the marker 16 of the inspection sticker 10 overlaps the nipple. In this embodiment, since the mark 16 is located at the center of the coordinate grid 12, by overlapping the mark 16 and the nipple, a part of the coordinate grid 12 can be positioned over the entire circumferential direction of the nipple. I can do it. Thereby, the entire breast B can be easily scanned by the guidance of the coordinate grid 12.

When attaching the base film 11 to the breast B, the four sides forming the edge of the base film 11 are pulled outward, and the position of the mark 16 is adjusted to the position of the nipple. Next, by gradually attaching the base film 11 to the breast B from the upper end to the lower end of the base film 11, the generation of wrinkles in the base film 11 is suppressed. In addition, in the base film 11, the side located above the nipple is the upper end, and the side located below the nipple is the lower end. If wrinkles occur in the base film 11, the wrinkled portion of the base film 11 is peeled off from the breast B, and a force is applied to the base film 11 to pull the base film 11 toward the outside of the edge. In this state, the base film 11 is attached to the breast B. Thereby, it is possible to remove wrinkles generated in the base film 11.

Note that when attaching the base film 11 to the breast B, a jig that can pull the base film 11 toward the outside of the edge of the base film 11 may be used. Further, as described above, when the separate film 13 has been subjected to a half-cut process, the base film 11 may be attached to the breast B using the following procedure. That is, after the protective film 14 is peeled off from the base film 11 or the fluidized bed 15, the laminate of the separate film 13 and the base film 11 is applied to the breast B via an ointment-like aliphatic hydrocarbon H. Then, the separate film 13 is peeled off from the base film 11.

As described above, in the present embodiment, the grid lines 12A extending along the scan direction DS include the first grid lines 12A1 and the second grid lines 12A2 having different colors, and in the arrangement direction DA, First grid lines 12A1 and second grid lines 12A2 are arranged alternately. Therefore, when the tester scans the probe along the scan direction DS, he or she can alternately scan along the first grid line 12A1 and scan along the second grid line 12A2. This prevents the person conducting the inspection from scanning the same grid line 12A multiple times or from omitting the scan of a certain grid line 12A. That is, the grid lines 12A can reduce scanning errors by the person conducting the test.

[Example]
Examples and comparative examples of inspection seals will be described with reference to FIG. 7.
[Comparative example 1-1]
A PET film (manufactured by Toray Industries, Inc., Lumirror S10) (Lumirror is a registered trademark) having a thickness of 12 μm was prepared as a base film for Comparative Example 1-1.

[Comparative example 1-2]
A PET film (Lumirror F48, manufactured by Toray Industries, Inc.) having a thickness of 4.5 μm was prepared as a base film for Comparative Example 1-2.

[Comparative example 1-3]
As a separate film, a PET film (Therapel BX-9, manufactured by Toray Industries, Inc.) (Therapel is a registered trademark) having a release layer and a thickness of 75 μm was prepared. Using the separate film as a support, extrusion lamination of EVA resin (ethylene-vinyl acetate copolymer resin) (Novatec LV440, manufactured by Japan Polyethylene Co., Ltd.) (Novatec is a registered trademark) was performed to obtain a thickness of 30 μm. An EVA film having the above-mentioned properties was formed as a base film. Thereafter, the base film of Comparative Example 1-3 was obtained by peeling off the separate film.

[Example 1-1]
A base film of Example 1-1 was obtained in the same manner as in Comparative Example 1-3, except that the thickness of the base film was changed to 15 μm.

[Example 1-2]
A base film of Example 1-2 was obtained in the same manner as in Comparative Example 1-3, except that the thickness of the base film was changed to 5 μm.

[Example 1-3]
A PU film (manufactured by Nippon Matai Co., Ltd., Esmer URS) (Esmer is a registered trademark) having a thickness of 30 μm and formed from an ether-based polyurethane resin was prepared as a base film for Examples 1-3.

[Example 1-4]
A PU film (manufactured by Okura Kogyo Co., Ltd., Silkron HVL85) (Silkron is a registered trademark) having a thickness of 15 μm and formed from an ether-based polyurethane resin was prepared as the base film of Examples 1-4.

[Example 1-5]
A PU film (manufactured by Nakajima Kogyo Co., Ltd., thin urethane film) having a thickness of 5 μm was prepared as the base film of Examples 1-5.

[Example 1-6]
A water transfer type tattoo sticker (manufactured by 3M Japan Ltd., A-One Transfer Sticker Product Number: 52103) was prepared. A PVA layer serving as an image receiving layer having a thickness of 5 μm was prepared as a base film for Examples 1-6.

[Evaluation method]
[Tensile elongation at break]
Each test seal was shaped into a dumbbell shape (test piece type 5) using a method that complies with JIS K 7127:1999 "Plastics - Tensile Specific Test Methods - Part 3: Film and Sheet Test Conditions". After cutting, each test piece was measured for tensile elongation at break by a method based on JIS K7161-1:2014. Specifically, the tensile elongation at break was measured using a universal testing machine (manufactured by Shimadzu Corporation, Autograph AGS-X load cell 1 kN). The test piece was fixed at two locations using a fixed gripping device of a universal testing machine, and the distance between the tips of the fixed gripping devices at this time was set to 80 mm. Then, the tensile speed was set to 300 mm/min, and the test piece was pulled between the fixed points of the test piece to determine the elongation at break of the test piece.

[100% elongation tensile strength]
Each test seal was shaped into a dumbbell shape (test piece type 5) using a method that complies with JIS K 7127:1999 "Plastics - Tensile Specific Test Methods - Part 3: Film and Sheet Test Conditions". After cutting, the 100% elongation tensile strength of each test piece was calculated by a method based on JIS K 7161-1:2014. Specifically, the 100% elongation tensile strength was calculated using a universal testing machine (same as above). The test piece was fixed at two locations using a fixed gripping device of a universal testing machine, and the distance between the tips of the fixed gripping devices at this time was set to 80 mm. Then, set the tensile speed to 300 mm/min, pull the test piece between the fixed points of the test piece, and calculate the 100% elongation tensile strength by dividing the measured force by the width of the test piece. did.

[Lamination suitability]
Using a breast cancer palpation training model (manufactured by Tanak Co., Ltd.), the suitability of pasting the inspection sticker was evaluated. A base film was attached to the breast of the model using an ointment-like aliphatic hydrocarbon made of paraffin and having a shear viscosity of 10,000 mPa·s at 30° C., and the following items were evaluated. Note that the viscosity of the aliphatic hydrocarbon was measured by the following method. The aliphatic hydrocarbons to be measured were measured using a B-type viscometer (manufactured by Toki Sangyo Co., Ltd., TVB-25L TM rotor 2) in accordance with "Viscosity measurement method using a single cylindrical rotational viscometer" in JIS Z 8803:2011. The measurement was carried out while the temperature was maintained at 30°C. In addition, the aliphatic hydrocarbon after stirring for 1 minute was used as the aliphatic hydrocarbon.

(Item 1) Wrinkles on inspection stickers In item 1, when the base film was attached to the breast, whether or not the base film wrinkled was evaluated on the following three levels. Note that, among the following three grades, a base film with an evaluation of "○" or "△" is an inspection sticker having lamination suitability.

○ No wrinkles occur △ Fine wrinkles occur, but they do not interfere with the inspection × Wrinkles large enough to interfere with the inspection occur

[Evaluation results]
The results of each evaluation will be explained with reference to FIG.
As shown in FIG. 7, it was found that if the base film was made of EVA resin, a base film having lamination suitability could be obtained by setting the thickness to 15 μm or less. Furthermore, it was found that a base film having lamination suitability could be obtained if the base film was made of polyurethane resin even if the base film had a thickness of 30 μm. However, if the base film has a thickness of 30 μm, wrinkles will occur in the base film although it does not interfere with inspection, so the thickness of the base film made of polyurethane resin is preferably 30 μm or less. Furthermore, it was observed that even when a base film made of PVA resin was used, wrinkles did not occur.

On the other hand, the base film made of PET resin was found to have low lamination suitability. It can be said that these results were obtained because the base film made of PET resin has a low tensile strength and does not stretch when the base film is attached to the object to be inspected.

As described above, a base film having a tensile elongation at break of 130% or more and a 100% elongation tensile strength of 4 N/cm or less can improve lamination suitability.
As explained above, according to the first embodiment of the inspection seal, the following effects can be obtained.

(1-1) The inspection sticker 10 has a tensile elongation at break suitable for attachment to the breast B and a tensile strength at 100% elongation. Therefore, according to the inspection sticker 10, it is easy to attach it to the breast B.

(1-2) Since the base film 11 is formed from at least one of an ether polyurethane resin, an ester polyurethane resin, and a carbonate polyurethane resin, it is possible to obtain a base film 11 with high lamination suitability. be.

(1-3) When the inspection seal 10 includes the fluidized bed 15, the step of applying a drug to the breast B for pasting the base film 11 on the breast B can be omitted, and the base film 11 on the breast B can be omitted. It is easier to paste.

(1-4) By setting the shear viscosity of the fluidized bed 15 to 1000 mPa·s or more, the reliability with which the fluidized bed 15 attaches the base film 11 to the breast B can be increased.

(1-5) Since the shear viscosity of the fluidized bed 15 is 200000 mPa·s or less, it is possible to suppress wrinkles and sag in the base film 11 when forming the fluidized bed 15 on the base film 11 by coating. .

(1-6) By forming the fluidized bed 15 from at least one of paraffin, squalane, and ceresin, the fluidized bed 15 reliably transmits microwaves and reduces irritation to the subject's skin. can do.

[Example of modification of the first embodiment]
Note that the first embodiment described above can be modified and implemented as follows.
[Coordinate grid]
- The coordinate grid 12 does not need to have grid lines 12B. As long as the coordinate grid 12 has at least grid lines 12A, it is possible to suppress scanning errors by the person conducting the inspection. That is, the base film 11 is not limited to the coordinate grid 12, and may have scanning indicators having other shapes such as shapes extending along one direction. The scan index may be anything that guides the position to be scanned by the probe or the direction of scan, for example.

- The coordinate grid 12 does not need to have the position indicator 12C. As long as the coordinate grid 12 has at least grid lines 12A, it is possible to suppress scanning errors by the person conducting the inspection.

- All grid lines 12A may have the same color. Even in this case, the grid lines 12A can guide the direction of scanning by the probe.

- In a plan view facing the surface 11F of the base film 11, the coordinate grid 12 may have a shape other than a square lattice. For example, the coordinate grid 12 may be composed of a plurality of concentric circles having mutually different diameters. That is, the coordinate grid 12 may be a grid corresponding to polar coordinates. In short, the coordinate grid 12 only needs to have a shape that can guide the direction and position of scanning with the probe while being attached to the breast B.

- The coordinate grid 12 does not have to be formed by printing. For example, the coordinate grid 12 may be formed by a concave portion or a convex portion that the base film 11 has.

[Sign]
- The marker 16 may be omitted. Even in this case, if the inspection sticker 10 has the coordinate grid 12, by adjusting the position of the coordinate grid 12 with respect to the breast B, the entire circumferential direction of the nipple can be scanned. It is possible to attach the base film 11 to the breast B.

- The mark 16 does not have to be formed by printing. For example, the mark 16 may be formed by a concave portion or a convex portion that the base film 11 has.

[Base film]
- As long as the base film 11 included in the inspection seal 10 satisfies the conditions 1-1 and 1-2 described above, the synthetic resin for forming the base film 11 may be a resin other than polyurethane resin. . For example, as is clear from the base film of the test example, the synthetic resin for forming the base film 11 may be EVA resin or PVA resin.

[Fluidized bed]
- The material for forming the fluidized bed 15 may be an ointment-like material other than paraffin, squalane, and ceresin, as long as it transmits microwaves better than water and can attach the base film 11 to the breast B. It may also be an aliphatic hydrocarbon having.

- The viscosity of the fluidized bed 15 may be lower than 1000 mPa·s or higher than 200000 mPa·s, as long as the base film 11 can be attached to the breast B by the fluidized bed 15.

[Separate film]
- The separate film 13 may be omitted. Even in this case, as long as the inspection sticker 10 includes the base film 11 that satisfies the above-mentioned conditions 1-1 and 1-2, it is possible to obtain the effect according to the above-mentioned (1-1). .

[Protective film]
- The protective film 14 may be omitted. Even in this case, as long as the inspection sticker 10 includes the base film 11 that satisfies the above-mentioned conditions 1-1 and 1-2, it is possible to obtain the effect according to the above-mentioned (1-1). .

[Inspection sticker]
- The inspection sticker 10 may have a total light transmittance of 30% or more at least in a portion of the base film 11 other than the coordinate grid 12. In this case, by peeling off the separate film 13 from the front surface 11F of the base film 11 and peeling off the protective film 14 from the back surface 11R, it is possible to visually recognize the coordinate grid 12 that the base film 11 has.

In addition, in the inspection seal 10, the total light transmittance may be 30% or more in a portion other than the coordinate grid 12 in the laminate of the separate film 13 and the base film 11. This makes it possible to visually recognize the coordinate grid 12 of the base film 11 when attaching the inspection sticker 10 to the inspection target, regardless of whether the separate film 13 is peeled off from the base film 11 or not. It is possible.

[Inspection target]
- The object of inspection is not limited to the breast, but may be other parts of the human body. That is, the inspection sticker 10 may be used not only for mammography but also for other image diagnoses.

[Second embodiment]
A second embodiment of the inspection seal will be described with reference to FIGS. 8 to 12. In the second embodiment, components common to the first embodiment are given the same reference numerals as those used in the first embodiment. Below, the configuration of the inspection seal, how to use the inspection seal, and examples will be explained in order.

[Configuration of inspection sticker]
The configuration of the inspection seal will be described with reference to FIG. 8.
The inspection sticker 10, like the inspection sticker 10 of the first embodiment, is a sticker used for mammography, which is an example of image diagnosis using microwaves. The inspection sticker 10 is a sticker that is affixed to the breast, which is the object of examination, in mammography.

As shown in FIG. 8, the inspection sticker 10 includes a base film 11 and an adhesive layer 17. The base film 11 has a coordinate grid 12 for guiding the scan position on the inspection object. The coordinate grid 12 is an example of a scan index. The base film 11 is made of polyurethane resin. The adhesive layer 17 is made of a urethane adhesive. The adhesive layer 17 is laminated on the base film 11. The thickness of the adhesive layer 17 is 5 μm or more and 25 μm or less.

In the inspection seal 10 of this embodiment, the following three conditions are satisfied in the laminate of the base film 11 and the adhesive layer 17.

(Condition 2-1) The tensile elongation at break specified in JIS K 7127 is 130% or more.
(Condition 2-2) 100% elongation tensile stress is 10 MPa or less.
(Condition 2-3) The moisture permeability specified in JIS Z 0208 is 750 g/m ² ·day or more under the conditions of 40° C. and 90% relative humidity.

The inspection sticker 10 has a tensile elongation at break and a 100% elongation tensile stress suitable for attachment to an object to be inspected. Therefore, according to the inspection sticker 10, it is easy to attach it to the inspection object and peel it off from the inspection object. In addition, since the moisture permeability of the test sticker 10 satisfies the above range, when the test sticker 10 is attached to the test object, sweating in the test object can be suppressed.

In the inspection seal 10, it is preferable that the following conditions are further satisfied in the laminate of the base film 11 and the adhesive layer 17.
(Condition 2-4) It has a transmittance of 70% or more for microwaves having a frequency of 2 GHz.

In mammography using the inspection seal 10, a probe that oscillates microwaves with a frequency of 2 GHz is used. Since the base film 11 has a transmittance of 70% or more for 2 GHz microwaves, it is possible to suppress attenuation of the microwaves emitted from the probe. This increases the accuracy of the image obtained as a result of scanning. As a result, the accuracy of image diagnosis is improved.

The polyurethane resin for forming the base film 11 includes one selected from the group consisting of ether polyurethane resins, ester polyurethane resins, and carbonate polyurethane resins. Thereby, it is possible to obtain a base film 11 that has high lamination suitability and high moisture permeability.

When the base film 11 is formed from an ether-based polyurethane resin, the thickness of the base film 11 is preferably 30 μm or less. The thickness of the base film 11 may be, for example, 5 μm or more and 30 μm or less. When the base film 11 is formed from an ester-based polyurethane resin, the thickness of the base film 11 may be, for example, 5 μm or more and 15 μm or less. When the base film 11 is formed from a carbonate-based polyurethane resin, the thickness of the base film may be, for example, 5 μm or more and 15 μm or less.

The base film 11 has a pair of surfaces facing each other. The pair of surfaces includes a front surface 11F and a back surface 11R. One of the pair of surfaces is a guide surface on which the coordinate grid 12 is printed. In this embodiment, the coordinate grid 12 is located on the back surface 11R. That is, the back surface 11R is an example of the guide surface. Base film 11 is transparent or semitransparent. The total light transmittance of the base film 11 as defined in JIS K 7361-1 is preferably 30% or more, more preferably 50% or more.

The adhesive layer 17 covers the back surface 11R. As a result, the coordinate grid 12 is sandwiched between the base film 11 and the adhesive layer 17, so that the coordinate grid 12 does not constitute the outer surface of the inspection seal 10. Therefore, the coordinate grid 12 is difficult to peel off from the inspection seal 10. The adhesive layer 17 covers the entire base film 11 when viewed from the direction in which the base film 11 and the adhesive layer 17 overlap. In the adhesive layer 17, the surface in contact with the base film 11 is the front surface 17F, and the surface facing the front surface 17F is the back surface 17R. The adhesive layer 17 has a thickness that covers the entire coordinate grid 12 and makes the back surface 17R a substantially flat surface. Adhesive layer 17 is transparent or semitransparent. The total light transmittance of the adhesive layer 17 is preferably 30% or more, more preferably 50% or more.

The inspection seal 10 further includes a separate film 13 and a protective film 14. Separate film 13 is peelably laminated on surface 11F of base film 11. The protective film 14 is peelably laminated on the back surface 17R of the adhesive layer 17. In the portion of the inspection seal 10 excluding the coordinate grid 12, the total light transmittance defined in JIS K 7361-1 is preferably 30% or more, more preferably 50% or more.

In the inspection sticker 10, a laminate of a base film 11 and an adhesive layer 17 is attached to a subject. In the inspection seal 10, a laminate of the base film 11 and the adhesive layer 17 is sandwiched between a separate film 13 and a protective film 14 in the thickness direction of the base film 11. Therefore, the laminate of the base film 11 and the adhesive layer 17 is protected from the outside by the separate film 13 and the protective film 14 until just before it is attached to the subject. Therefore, the base film 11 and the adhesive layer 17 are kept clean until they are attached to the subject.

[How to use the inspection sticker]
A method of using the inspection seal 10 will be described with reference to FIGS. 9 and 10.
As shown in FIG. 9, when using the inspection sticker 10, the user first peels off the separate film 13 from the base film 11 and peels off the protective film 14 from the adhesive layer 17. Note that when using the inspection sticker 10, the separate film 13 may be peeled off before the protective film 14, or the protective film 14 may be peeled off before the separate film 13.

As shown in FIG. 10, the adhesive layer 17 is attached to the breast B of the subject S. At this time, the inspection sticker 10 is pasted on the breast B so that the marker 16 of the inspection sticker 10 overlaps the nipple. In this embodiment, since the mark 16 is located at the center of the coordinate grid 12, by overlapping the mark 16 and the nipple, a part of the coordinate grid 12 can be positioned over the entire circumferential direction of the nipple. I can do it. Thereby, the entire breast B can be easily scanned by the guidance of the coordinate grid 12.

When attaching the laminate of the base film 11 and the adhesive layer 17 to the breast B, pull the four edges of the laminate outward and position the mark 16 at the nipple position. match. Next, by gradually attaching the laminate to the breast B from the upper end to the lower end of the laminate, wrinkles are prevented from forming in the laminate. In addition, in the laminate, the side located above the nipple is the upper end, and the side located below the nipple is the lower end. If wrinkles occur in the laminate, peel off the wrinkled portion of the laminate from the breast B, and apply a force to the laminate to pull the laminate toward the outside of the edge. Attach the laminate to breast B. Thereby, it is possible to remove wrinkles generated in the laminate.

Note that when attaching the laminate to the breast B, a jig that can pull the laminate toward the outside of the edge of the laminate may be used. Further, as described above, when the separate film 13 is half-cut, after peeling off the protective film 14 from the adhesive layer 17, the separate film 13, the base film 11, and the adhesive layer 17 are assembled. After attaching the laminate to the breast B, the separate film 13 may be peeled off from the base film 11.

[Example]
Examples and comparative examples of inspection seals will be described with reference to FIGS. 11 and 12.
[Comparative example 2-1]
A PET film (manufactured by Toray Industries, Inc., Lumirror S10) (Lumirror is a registered trademark) having a thickness of 12 μm was prepared as a base film. In addition, a protective film (Therapel WZ, manufactured by Toray Film Processing Co., Ltd.) (Therapel is a registered trademark) having a thickness of 38 μm and consisting of a PET film and a release layer was prepared. An acrylic adhesive (manufactured by Cosmedy Pharmaceutical Co., Ltd., HiPAS10) (HiPAS is a registered trademark) was applied to the protective film by gravure coating, and the acrylic adhesive was dried. Thereby, an adhesive layer having a thickness of 20 μm was obtained. Next, a laminate was obtained by bonding the base film and the adhesive layer together. A test seal of Comparative Example 2-1 was obtained by aging the laminate in a 40° C. environment.

[Comparative example 2-2]
Comparative Example 2-1 was prepared in the same manner as in Comparative Example 2-1, except that the base film was changed to a PET film (Lumirror F48, manufactured by Toray Industries, Inc.) having a thickness of 4.5 μm. - Obtained 2 inspection stickers.

[Comparative example 2-3]
As a separate film, a PET film (Therapel BX-9, manufactured by Toray Industries, Inc.) having a release layer and a thickness of 75 μm was prepared. Using the separate film as a support, extrusion lamination of EVA resin (Novatec LV440, manufactured by Japan Polyethylene Co., Ltd.) (Novatec is a registered trademark) is performed to form an EVA film with a thickness of 30 μm as a base film. did. Other than that, an inspection seal of Comparative Example 2-3 was obtained by the same method as Comparative Example 2-1. In addition, when attaching the adhesive layer coated on the protective film and the base film, a laminate of the separate film and the base film was attached to the adhesive layer. After aging the laminate composed of the separate film, base film, adhesive layer, and protective film, the separate film was peeled off and used as an inspection seal in Comparative Example 2-3.

[Comparative example 2-4]
An inspection seal of Comparative Example 2-4 was obtained in the same manner as Comparative Example 2-3 except that the thickness of the base film was changed to 15 μm.

[Example 2-1]
An inspection seal of Example 2-1 was obtained in the same manner as in Comparative Example 2-3, except that the thickness of the base film was changed to 5 μm.

[Example 2-2]
Example 2-2 was prepared in the same manner as in Example 2-1, except that the adhesive layer was formed using a urethane adhesive (SP-205, manufactured by Toyochem Co., Ltd.) in Example 2-1. Obtained an inspection sticker. When forming the adhesive layer, add 1% of a hardening agent (manufactured by Toyochem Co., Ltd., T-501B) to the urethane adhesive, and then stir the urethane adhesive to form the adhesive layer. A coating liquid for forming was obtained.

[Example 2-3]
The same method as in Comparative Example 2-1 was used, except that in Comparative Example 2-1, the base film was changed to a PU film having a thickness of 30 μm (manufactured by Nippon Matai Co., Ltd., Esmer URS) (Esmer is a registered trademark). In this way, a test seal of Example 2-3 was obtained.

[Example 2-4]
An inspection seal of Example 2-4 was obtained in the same manner as in Example 2-3, except that the thickness of the adhesive layer was changed to 10 μm.

[Example 2-5]
An inspection seal of Example 2-5 was obtained in the same manner as in Example 2-3, except that the thickness of the adhesive layer was changed to 5 μm.

[Example 2-6]
An inspection seal of Example 2-6 was obtained in the same manner as in Example 2-3, except that the thickness of the adhesive layer was changed to 30 μm.

[Example 2-7]
A PU film (Esmer URS, manufactured by Nippon Matai Co., Ltd.) having a thickness of 30 μm and made of an ether-based polyurethane resin was prepared as a base film. In addition, a protective film (Therapel WZ, manufactured by Toray Film Processing Co., Ltd.) having a thickness of 30 μm and consisting of a PET film and a release layer was prepared. A 1% curing agent (T-501B, manufactured by Toyochem Co., Ltd.) was added to a urethane adhesive (SP-205, manufactured by Toyochem Co., Ltd.), and the mixture was stirred to prepare a coating liquid. Next, a coating liquid was applied to the protective film by gravure coating, and the urethane adhesive was dried. Thereby, an adhesive layer having a thickness of 20 μm was obtained. Then, a laminate was obtained by bonding the base film and the adhesive layer together. Test seals of Examples 2-7 were obtained by aging the laminate in a 40°C environment.

[Example 2-8]
An inspection seal of Example 2-8 was obtained in the same manner as in Example 2-7, except that the thickness of the adhesive layer was changed to 10 μm.

[Example 2-9]
An inspection seal of Example 2-9 was obtained in the same manner as in Example 2-7, except that the thickness of the adhesive layer was changed to 5 μm.

[Example 2-10]
An inspection seal of Example 2-10 was obtained in the same manner as in Example 2-7, except that the thickness of the adhesive layer was changed to 30 μm.

[Example 2-11]
Except in Comparative Example 2-1, the base film was changed to a PU film (manufactured by Okura Industries Co., Ltd., Silcron HVL85) (Silcron is a registered trademark) having a thickness of 15 μm and formed from an ether-based polyurethane resin. An inspection seal of Example 2-11 was obtained by the same method as Comparative Example 2-1.

[Example 2-12]
Example 2-7 except that the base film was changed to a PU film (manufactured by Okura Kogyo Co., Ltd., Silkron HVL85) having a thickness of 15 μm and formed from an ether-based polyurethane resin. An inspection seal of Example 2-12 was obtained by the same method as in Example 7.

[Example 2-13]
In Comparative Example 2-1, the example was prepared in the same manner as in Comparative Example 2-1, except that the base film was changed to a PU film (manufactured by Nakajima Kogyo Co., Ltd., thin film urethane film) having a thickness of 5 μm. 2-13 inspection stickers were obtained.

[Example 2-14]
An inspection seal of Example 2-14 was obtained in the same manner as in Example 2-13, except that the thickness of the adhesive layer was changed to 10 μm.

[Example 2-15]
An inspection seal of Example 2-15 was obtained in the same manner as in Example 2-13, except that the thickness of the adhesive layer was changed to 5 μm.

[Example 2-16]
An inspection seal of Example 2-16 was obtained in the same manner as in Example 2-13, except that the thickness of the adhesive layer was changed to 30 μm.

[Example 2-17]
Example 2-7 was carried out in the same manner as in Example 2-7, except that the base film was changed to a PU film (manufactured by Nakajima Kogyo Co., Ltd., thin film urethane film) having a thickness of 5 μm. 2-17 inspection sticker was obtained.

[Example 2-18]
An inspection seal of Example 2-18 was obtained in the same manner as in Example 2-17, except that the thickness of the adhesive layer was changed to 10 μm.

[Example 2-19]
An inspection seal of Example 2-19 was obtained in the same manner as in Example 2-17 except that the thickness of the adhesive layer was changed to 5 μm.

[Example 2-20]
An inspection seal of Example 2-20 was obtained in the same manner as in Example 2-17, except that the thickness of the adhesive layer was changed to 30 μm.

[Example 2-21]
A water transfer type tattoo sticker (manufactured by 3M Japan Ltd., A-One Transfer Sticker Product Number: 52103) was prepared. Then, instead of the base film, the enclosed adhesive layer was attached to the PVA layer serving as the image-receiving layer to obtain a test sticker of Example 2-21. In addition, since the PVA layer was applied to the release paper, after the PVA layer was attached to the adhesive layer, the release paper was moistened using a tissue moistened with water, and the PVA layer was transferred to the adhesive layer. This caused the PVA layer to be peeled off from the release paper. Then, the surface of the PVA layer was sufficiently dried by leaving the laminate including the PVA layer and the adhesive layer in an environment of 40°C for 2 hours, and then the inspection seal of Example 2-21 was evaluated. Ta. Furthermore, when pasting the inspection sticker of Example 2-21, a laminate of release paper and a PVA layer was pasted on the adhesive layer laminated to the separate film, and then the separate film of the adhesive layer was peeled off. Ta. Thereafter, the adhesive layer was applied to the object and the release paper was then peeled off from the PVA layer by moistening the release paper. In this state, the adhesion suitability of the test sticker of Example 2-21 was evaluated.

[Example 2-22]
As a separate film, a PET film (Therapel BX-9, manufactured by Toray Industries, Inc.) having a release layer and a thickness of 75 μm was prepared. Then, a water-based polyurethane (manufactured by Mitsui Chemicals, Inc., Takelac WS-5984) (Takelac is a registered trademark) containing an ester polyol was coated, and then dried. Next, the dried layer was aged for 2 days at room temperature to obtain a base film having a thickness of 15 μm. An inspection seal of Example 2-22 was obtained by forming an adhesive layer on the base film in the same manner as in Example 2-2.

[Example 2-23]
An inspection seal of Example 2-23 was obtained in the same manner as in Example 2-22, except that the thickness of the adhesive layer was changed to 10 μm.

[Example 2-24]
An inspection seal of Example 2-24 was obtained in the same manner as in Example 2-22, except that the thickness of the base film was changed to 5 μm.

[Example 2-25]
An inspection seal of Example 2-25 was obtained in the same manner as in Example 2-24, except that the thickness of the adhesive layer was changed to 10 μm.

[Example 2-26]
Example 2-22 was carried out in the same manner as in Example 2-22, except that the aqueous polyurethane containing an ester polyol was changed to a water-based polyurethane containing an ether polyol (Takelac WS-6021, manufactured by Mitsui Chemicals, Inc.). According to the method, a test seal of Example 2-26 was obtained.

[Example 2-27]
An inspection seal of Example 2-27 was obtained in the same manner as in Example 2-26, except that the thickness of the adhesive layer was changed to 10 μm.

[Example 2-28]
An inspection seal of Example 2-28 was obtained in the same manner as in Example 2-26, except that the thickness of the base film was changed to 5 μm.

[Example 2-29]
An inspection seal of Example 2-29 was obtained in the same manner as in Example 2-28, except that the thickness of the adhesive layer was changed to 10 μm.

[Example 2-30]
Example 2-22 was carried out in the same manner as in Example 2-22, except that the water-based polyurethane containing an ester polyol was changed to the water-based polyurethane containing a carbonate polyol (manufactured by Mitsui Chemicals, Inc., Takelac W-6110). Test seals of Examples 2-30 were obtained by the method.

[Example 2-31]
An inspection seal of Example 2-31 was obtained in the same manner as in Example 2-30, except that the thickness of the adhesive layer was changed to 10 μm.

[Example 2-32]
An inspection seal of Example 2-32 was obtained in the same manner as in Example 2-30, except that the thickness of the base film was changed to 5 μm.

[Example 2-33]
An inspection seal of Example 2-33 was obtained in the same manner as in Example 2-32, except that the thickness of the adhesive layer was changed to 10 μm.

[Evaluation method]
[Tensile elongation at break]
The tensile elongation at break was measured by a method based on JIS K 7127, "Plastics - Specific tensile test methods - Part 3: Test conditions for films and sheets." When measuring the tensile elongation at break, the inspection seal was cut out into a dumbbell shape (test piece type 5), and the tensile elongation at break was measured using a tensile testing machine. The test speed was set to 300 mm/min, and the distance L ₀ between marked lines was set to 25 mm. The amount of elongation at break was measured, and the elongation at break was calculated. In addition, at the time of tensile breakage measurement, the tensile breakage measurement was carried out with respect to the laminated body comprised only of a base film and an adhesive layer.

[100% elongation tensile stress]
In tensile fracture measurement, the stress when the distance between gauge lines L ₀ reaches 100% elongation is divided by the tensile force when the elongation of the test seal is 100% by the initial value of the cross-sectional area of the test seal. It was calculated by

[Lamination suitability]
Using a breast cancer palpation training model (manufactured by Tanak Co., Ltd.), the suitability of pasting the inspection sticker was evaluated. An inspection sticker was attached to the model's breast, and the following three items were evaluated.
(Item 1) Wrinkles on the inspection sticker (Item 2) Lifting of the inspection sticker (Item 3) Repeated pasting and peeling of the inspection sticker (reworkability)

In item 1, when the test sticker was pasted on the breast, whether or not wrinkles appeared on the test sticker was evaluated on the following three scales. It should be noted that, among the following three levels, a test sticker with an evaluation of "○" or "△" is a test sticker that has adhesion suitability.
○ No wrinkles occur △ Fine wrinkles occur, but they do not interfere with the inspection × Wrinkles large enough to interfere with the inspection occur

In item 2, when the test sticker was pasted on the breast, whether or not a part of the test sticker was floating from the breast was evaluated using the following three levels. It should be noted that, among the following three levels, a test sticker with an evaluation of "○" or "△" is a test sticker that has adhesion suitability.
○ No lifting occurs △ Lifting occurs due to the unevenness of the nipple, but does not interfere with the examination × The examination sticker is significantly lifted from the breast, causing an obstruction to the examination

In item 3, the following three steps were evaluated in the operation of pasting the test sticker on the breast, then once peeling the test sticker from the breast, and then pasting the test sticker on the breast again.
○ After pasting the inspection sticker, it can be peeled off and re-attached. △ The inspection sticker will be deformed when it is removed, but it can be pasted and used again. × Peel off the inspection sticker The inspection sticker may be torn or cannot be pasted again.

[Moisture permeability]
The moisture permeability of the test seal was measured by a method based on JIS Z 0208 "Moisture permeability test method for moisture-proof packaging materials (cup method)". When measuring moisture permeability, calcium chloride (anhydrous) was measured as a moisture absorbent. Next, the initial weight of the moisture permeable cup containing the moisture absorbent was measured using an electronic balance. After the test seal was left in an environment of 40° C. and 90% relative humidity for 2 hours, the weight of the moisture permeable cup was measured. Thereafter, the increase in the weight of the moisture permeable cup was calculated as the amount of water vapor permeated.

[Sweat survey]
A 5 cm square test piece was cut out from the inspection sticker. Then, the test pieces were attached to the arms of three healthy subjects, and each subject was allowed to remain in a resting state for 5 minutes in a test room at 40° C. and 20% relative humidity. Then, the test piece was removed from each subject, and it was confirmed whether or not sweat was occurring in the part of the subject's arm where the test piece was removed.

○ Sweating was not observed in all subjects × Sweating was observed in one or more subjects

[Evaluation results]
The results of each evaluation will be explained with reference to FIGS. 11 and 12.
As shown in FIG. 11, it was found that by using a base film made of polyurethane resin, the occurrence of wrinkles in the test seal was suppressed, and the reworkability of the test seal was improved. Note that if the base film has a thickness of 30 μm, wrinkles will occur in the inspection seal, although it does not interfere with inspection, so the thickness of the base film made of polyurethane resin is preferably 30 μm or less. . In addition, when the base film thickness is 5 μm, it does not interfere with inspection, but deformation of the inspection seal was observed in the reworkability test, so the base film thickness should be 5 μm or more. It is preferable.

In addition, by using a base film with high lamination suitability, it is possible to satisfy the requirements that the tensile elongation at break of the inspection seal is 420% or more, and the tensile stress at 100% elongation is 10 MPa or less. was recognized. It was recognized that this made it possible to improve the adhesion suitability of the test sticker. It was also confirmed that by using a base film with high moisture permeability, it was possible to increase the moisture permeability of the test seal to 783 g/m ² ·day or more and to suppress sweating.

On the other hand, the base film made of PET resin was found to have low lamination suitability. It can be said that these results were obtained because the base film made of PET resin has a low tensile elongation, and the base film does not stretch when the test sticker is attached to the test object. Furthermore, it is possible to improve the lamination suitability of the base film made of EVA resin by reducing the thickness to 5 μm. However, the moisture permeability is low, and this may cause sweating in the area to which the test sticker is attached to the extent that it may interfere with the test. Furthermore, it was found that when using a base film made of PVA resin, the reworkability of the inspection seal was low because the base film was torn. On the other hand, even when a base film made of PVA resin is used, wrinkles and lifting do not occur, so the tensile elongation at break may be 130% or more in order to improve lamination suitability.

As an adhesive for forming an adhesive layer, a urethane adhesive was found to have higher moisture permeability than an acrylic adhesive. In addition, by forming the adhesive layer using a urethane adhesive, the moisture permeability of the test sticker can be increased to 750 g/m ² ·day or more, which has been shown to suppress sweating. . Note that by reducing the thickness of the adhesive layer, the moisture permeability of the test seal can be increased and sweating can be suppressed, but the test seal may float due to the unevenness of the nipple. Further, even when the adhesive layer is formed using a urethane adhesive, if the thickness of the adhesive layer is 30 μm, it is difficult to suppress sweating in the subject due to low moisture permeability. In addition, if the adhesive layer is too thick, the adhesive force of the adhesive layer will be too strong, which may cause strain on the examinee when peeling off the inspection sticker, and depending on the combination with the base film, the adhesive force of the adhesive layer will be too strong. The seal may be torn. In this respect, the thickness of the adhesive layer is preferably 5 μm or more and 25 μm or less.

As shown in FIG. 12, it was found that the tensile elongation at break varied depending on the polyol constituting the polyurethane resin, and that the test results of lamination suitability varied accordingly. It was found that the base film made of ester polyurethane resin or ether polyurethane resin has a higher tensile elongation at break than the base film made of carbonate polyurethane resin, and therefore is less likely to wrinkle. Additionally, base films made of carbonate-based polyurethane resin are less likely to deform in reworkability tests, even if the base film is thinner, than base films made of ester-based polyurethane resin or ether-based polyurethane resin. Admitted. Furthermore, base films made of ether-based polyurethane resin have higher moisture permeability than base films made of ester-based polyurethane resin or carbonate-based polyurethane resin. It was found that sweating in people was suppressed.

In this way, by using a base film made of polyurethane resin with high lamination suitability, the tensile elongation at break of the inspection seal is 310% or more, and the 100% elongation tensile stress is 10 MPa or less. It was recognized that this is possible. It was recognized that this made it possible to improve the adhesion suitability of the test sticker. It was also confirmed that by using a polyurethane resin base film with high moisture permeability, it was possible to increase the moisture permeability of the inspection seal to 752 g/m ² ·day or more and to suppress sweating.

As explained above, according to the second embodiment of the inspection seal, the following effects can be obtained.
(2-1) The inspection sticker 10 has a tensile elongation at break suitable for attachment to the breast B and a tensile stress at 100% elongation. Therefore, according to the inspection sticker 10, it is easy to attach it to the breast B.

(2-2) Furthermore, since the moisture permeability of the inspection sticker 10 satisfies the above range, when the inspection sticker 10 is attached to the breast B, sweating in the breast B can be suppressed.

(2-3) Since the coordinate grid 12 is sandwiched between the base film 11 and the adhesive layer 17, the coordinate grid 12 does not constitute the outer surface of the inspection seal 10. Therefore, the coordinate grid 12 is difficult to peel off from the inspection seal 10.

(2-4) The total light transmittance of the inspection sticker 10 excluding the coordinate grid 12 is 30% or more. Therefore, when attaching the inspection sticker 10 to the breast B, it is possible to adjust the position of the inspection sticker 10 with respect to the breast B while visually confirming the position of the coordinate grid 12 with respect to the breast B.

(2-5) When the tester scans the probe along the scan direction DS, it is possible to alternately scan along the first grid line 12A1 and scan along the second grid line 12A2. can. This prevents the person conducting the inspection from scanning the same grid line 12A multiple times or from omitting the scan of a certain grid line 12A. That is, the grid lines 12A can reduce scanning errors by the person conducting the test.

(2-6) When using the inspection sticker 10, it is possible to overlap the center of the coordinate grid 12 on the nipple of the subject S. Therefore, a portion of the coordinate grid 12 can be positioned over the entire circumferential direction of the nipple. This makes it easier to scan the entire breast B using the coordinate grid 12 as a guide.

[Example of modification of second embodiment]
Note that the second embodiment described above can be modified and implemented as follows.
[Base film]
- If the laminate of the base film 11 and the adhesive layer 17 included in the inspection seal 10 satisfies the above conditions 2-1 and 2-2, the synthetic resin for forming the base film 11 is polyurethane resin. Other resins may also be used.

[Adhesive layer]
- If the laminate of the base film 11 and the adhesive layer 17 included in the inspection sticker 10 satisfies the above conditions 2-1 and 2-2, the adhesive for forming the adhesive layer 17 is a urethane-based adhesive. Adhesives other than adhesives may be used.

[Separate film]
- The separate film 13 may be omitted. Even in this case, as long as the inspection sticker 10 includes the base film 11 and the adhesive layer 17, the effect similar to (2-1) described above can be obtained.

[Protective film]
- The protective film 14 may be omitted. Even in this case, as long as the inspection sticker 10 includes the base film 11 and the adhesive layer 17, the effect similar to (2-1) described above can be obtained.

[Inspection sticker]
- The inspection sticker 10 may have a total light transmittance of 30% or more at least in a portion of the laminate of the base film 11 and the adhesive layer 17 other than the coordinate grid 12. In this case, by peeling off the separate film 13 from the base film 11 and peeling off the protective film 14 from the adhesive layer 17, it is possible to visually recognize the coordinate grid 12 that the base film 11 has.

In addition, in the inspection seal 10, the total light transmittance may be 30% or more in a portion other than the coordinate grid 12 in the laminate of the separate film 13, the base film 11, and the adhesive layer 17. This makes it possible to visually recognize the coordinate grid 12 that the base film 11 has, regardless of whether the separate film 13 is peeled off from the base film 11 or not. is possible.

- The laminate of the base film 11 and the adhesive layer 17 may have a moisture permeability of less than 750 g/m ² ·day. Even in this case, as long as the laminate of the base film 11 and the adhesive layer 17 satisfies the above-mentioned conditions 2-1 and 2-2, the effect according to the above-mentioned (2-1) can be obtained. I can.

[Other change examples]
- The inspection seal 10 of the second embodiment and the modified example of the inspection seal 10 are within the range that does not contradict the configuration of the inspection seal 10 of the first embodiment and the configuration of the modified example of the first embodiment. It is possible to implement these configurations in combination with each other.

10... Inspection seal, 11... Base film, 11F, 14F, 15F, 17F... Front surface, 11R, 14R, 15R, 17R... Back surface, 12... Coordinate grid, 12A, 12B... Grid line, 12A1... First grid line, 12A2...Second grid line, 12B1...First division, 12B2...Second division, 12C...Position mark, 13...Separate film, 14...Protective film, 15...Fluidized bed, 16...Marker, 17...Adhesive layer.

Claims (12)

An inspection sticker used for image diagnosis using microwaves,
Equipped with a base film that has scanning indicators and is pasted on the inspection target,
The base film has a tensile elongation at break of 130% or more and a tensile strength at 100% elongation of 4 N/cm or less. The fluidized bed is made of an aliphatic hydrocarbon that transmits microwaves more than water, and is laminated on the base film and has a viscosity that allows the base film to be attached to the inspection target. The inspection seal according to claim 1, further comprising a layer. The inspection seal according to claim 2, wherein the fluidized bed has a shear viscosity at 30° C., which is defined in JIS Z 8803:2011, from 1000 mPa·s to 200000 mPa·s. The inspection seal according to claim 2 or 3, wherein the fluidized bed is formed from at least one selected from the group consisting of paraffin, squalane, and ceresin. further comprising an adhesive layer laminated on the base film,
The thickness of the adhesive layer is 5 μm or more and 25 μm or less,
In the inspection seal, in the laminate of the base film and the adhesive layer,
The inspection seal according to claim 1, wherein the moisture permeability specified in JIS Z 0208 is 750 g/m ² ·day or more under the conditions of 40° C. and 90% relative humidity. An inspection sticker used for image diagnosis using microwaves,
a base film having an index for guiding the scan position on the inspection target;
an adhesive layer laminated on the base film, the adhesive layer having a thickness of 5 μm or more and 25 μm or less,
In the inspection seal, the laminate of the base film and the adhesive layer has a tensile elongation at break specified by JIS K 7127 of 130% or more, and a 100% elongation tensile stress of 10 MPa or less. . The laminate of the base film and the adhesive layer has a moisture permeability defined by JIS Z 0208 of 750 g/m ² ·day or more at 40° C. and 90% relative humidity. Inspection sticker. The base film has a pair of surfaces facing each other, one of the pair of surfaces being a guide surface on which the indicator is printed,
The inspection seal according to claim 6 or 7, wherein the adhesive layer covers the guide surface. a separate film that is releasably laminated on a surface of the base film opposite to the guide surface;
further comprising a protective film that is releasably laminated on a surface of the adhesive layer opposite to the surface that is in contact with the base film,
The test according to claim 8, wherein a portion of the laminate of the separate film, the base film, and the adhesive layer excluding the indicator has a total light transmittance of 30% or more as defined in JIS K 7361-1. sticker. The index is a coordinate grid that extends along the scan direction and includes a plurality of grid lines arranged in a direction intersecting the scan direction, and among the plurality of grid lines, a grid line of a first color and a grid line of a first color are arranged. , and grid lines of a second color different from the first color are arranged alternately. 10 . The inspection sticker according to claim 1 . The inspection seal according to claim 10, further comprising a mark indicating a predetermined coordinate in the coordinate grid. The base film is formed from polyurethane resin,
The inspection method according to any one of claims 1 to 11, wherein the polyurethane resin includes at least one selected from the group consisting of an ether polyurethane resin, an ester polyurethane resin, and a carbonate polyurethane resin. sticker.