JP6512581B2 - Marker for radiotherapy and method of manufacturing the same - Google Patents

Description

  The present invention relates to a radiotherapy marker for marking the skin of a patient as a marker for radiotherapy, and a method of manufacturing the same.

  Conventionally, a base sheet on which a mark serving as a treatment mark is printed, a transparent protective sheet layer releasably laminated on the back surface of the base sheet, and a back surface of the protective sheet layer, The ink layer forming the same mark as the mark printed on the base paper, the adhesive layer laminated on the back surface of the ink layer, and the protective paper laminated releasably on the back surface of the adhesive layer The protective paper is peeled off, the base backing paper is made to contain water, and the adhesive layer is pressed against the skin to transfer the adhesive layer, the ink layer and the protective sheet layer to the skin side. There is known a therapeutic marker which serves as a marker for the treatment of the above, and in which the protective sheet layer, the ink layer and the adhesive layer have high flexibility and resistance against the skin (Patent Document 1).

Patent No. 3609289

  The marker for radiotherapy of Patent Document 1 can perform water transfer work while grasping the position and shape of marks such as lines and crosses to be marked on a patient's skin by marks printed on the surface of a base paper, and the operator or patient can It is an excellent thing that a clean and accurate mark can be marked without soiling clothes and the like.

  By the way, this type of radiotherapy marker is manufactured by printing a mark on the surface of the base paper and printing a protective sheet layer, an ink layer and an adhesive layer on the back side of the base paper, so the base paper is printed on the front and back It is necessary to use one with a strength that can withstand the There is a concern that the base paper having a strong stiffness may have poor adhesion to the skin when the protective paper is peeled off and the adhesive layer is pressed against the skin of the patient. On the other hand, if the base paper is weak, it may be bent during storage or damage to the mark itself.

  Therefore, the present invention does not affect the adhesion when pressed against the skin of the patient in use, can reduce the possibility of damage during storage, etc., and can be accurately marked. It is an object of the present invention to provide a marker for radiation treatment which makes it easy to grasp the type of the patient.

The marker for radiotherapy of the present invention made to achieve the above object is a water comprising a protective layer having light permeability, an ink layer representing a mark to be transferred to the skin, and an adhesive layer for adhering to the skin. It is for sticking a transcription mark on skin and using it as a mark at the time of radiotherapy, and is characterized by having also the following composition.
(1A) The water transfer mark is formed on the back side of a base paper made of translucent rice paper having a water-soluble adhesive layer formed on the back side, and a transparent plastic film is formed on the back side of the water transfer mark. have a configured protected laminated structure in which a sheet is attached to, that are as viewable said water transfer mark both from the protective sheet side from the base mount side.
(1B) The protective layer is formed on the back side of the water-soluble adhesive layer using a transparent ink, and the ink layer is formed on the rear side of the protective layer using an opaque ink so as to fit inside the protective layer The adhesive layer is formed on the back surface side of the ink layer so as to cover the ink layer and the protective layer, using a transparent resin ink which exhibits adhesiveness by wetting.

  According to the marker for radiotherapy of the present invention, since the base sheet is made of translucent rice paper and the protective layer has light transparency, the ink layer formed by the opaque ink is transparent from the surface side of the base sheet. Looks like. In addition, since the base paper is a semitransparent rice paper, it is weak and does not interfere with the adhesion when the protective sheet is peeled off and the water transfer mark is pressed against the skin. Therefore, accurate marking on the skin by water transfer is possible. On the other hand, since a transparent plastic film is used as the protective sheet, it is possible to cover the stiffness of the base paper when storing the marker for radiation treatment. In addition, since the protective sheet is made of a transparent plastic film and the adhesive layer is made of a transparent resin ink, the mark can be visually recognized even if it is turned over. As a result, when various marks such as a cross or straight line are used for radiation treatment, it is possible to smoothly select an appropriate marker for radiation treatment. A light transmitting intermediate layer may be interposed between the protective layer and the ink layer, and between the ink layer and the adhesive layer.

The marker for radiotherapy of the present invention made to achieve the above object is a water comprising a protective layer having light permeability, an ink layer representing a mark to be transferred to the skin, and an adhesive layer for adhering to the skin. It is for sticking a transcription mark on skin and using it as a mark at the time of radiotherapy, and is characterized by having also the following composition.
(2A) The water transfer mark is formed on the back side of the base paper made of translucent rice paper having a water-soluble paste layer formed on the back side, and a transparent plastic film is formed on the back side of the water transfer mark Having a laminated structure with the constructed protective sheet attached.
(2B) The protective layer is formed on the back side of the water-soluble adhesive layer using a transparent ink, and the ink layer is formed on the back side of the protective layer so as to fit inside the protective layer using an opaque ink. The adhesive layer is formed on the back surface side of the ink layer so as to cover the ink layer and the protective layer, using a transparent resin ink which exhibits adhesiveness by wetting.
(2 C ) The base paper and the protective sheet are formed in the shape of a strip having the same width and the same length, the water transfer marks are constituted by marks representing intersections or intersections, and the water transfer marks are those of the base It is formed in plural so that it may be arranged at a predetermined interval in the longitudinal direction while being biased to one side in the width direction.
( 2D ) The protective sheet is attached by the adhesive force of the adhesive layer, and in a portion where the adhesive layer is not present, the protective sheet is separated from the base sheet.

  According to the marker for radiotherapy of the present invention also having such a configuration, it is possible to separate and use only the necessary number of water transfer marks formed in a plurality. Under the present circumstances, since the marker for radiotherapy of this invention can visually recognize a mark also from front and back, detachment operation can be implemented correctly. In addition, since marks such as crosses are formed on one side in the width direction of the strip-shaped marker for radiotherapy, the other side in the width direction is a margin, and the protective sheet is separated from the base paper. It becomes. Therefore, when removing the protective sheet from the small chipped marker pieces, pressing the small marker pieces after peeling off the protective sheet against the skin, or peeling off the water-containing base sheet, this margin You can work by pinching the part with your finger. If one small chip is used from the beginning, the protective sheet may peel off during storage and damage the water transfer marks, but only the required number of water transfer marks formed by arranging a plurality of pieces Since the configuration is used separately, there is also an effect that it is difficult to cause the protective sheet to drop off during such storage.

In the method for producing a radiotherapy marker of the present invention made to achieve the above object, a protective layer having light transparency, an ink layer showing a mark to be transferred to the skin, and an adhesive layer to be adhered to the skin are laminated. It is a manufacturing method of the marker for radiotherapy for sticking the water transfer mark which becomes it on a skin, and using it as a mark in the case of radiotherapy, and is characterized by comprising the following processes.
(3A) A transparent ink is used on the back surface of the water-soluble adhesive layer formed on the rice paper side of the composite paper of a predetermined size in which translucent rice paper is laminated on a backing sheet. After the protective layer is printed, the ink layer is printed from the back side of the protective layer using the opaque ink so as to fit inside the protective layer, and a transparent resin ink that exhibits adhesiveness by wetting Printing the adhesive layer so as to cover the protective layer and the back surface of the ink layer from the back surface side of the ink layer.
(3B) Protection that applies a transparent plastic film of a size that can cover and hide the entire water transfer mark printed on the composite paper after the printing step on the back surface side of the adhesive layer using the adhesive force of the adhesive layer Sheet sticking process.
(3C) A cutting step of cutting into a strip of a predetermined width in a state where the backing sheet is peeled off from the composite sheet after the protective sheet attaching step.

  According to the method for producing a marker for radiotherapy of the present invention, the steps (3A) to (3C) form a water transfer mark on the back side of the base paper made of translucent rice paper, and It is possible to manufacture a strip radiotherapy marker having a laminated structure in which a protective sheet made of a transparent plastic film is attached to the back side of the water transfer mark. According to the marker for radiotherapy of the present invention, even in the case of rice paper having the weakness of stiffness when applied to the skin, the stiffness is secured by the backing in the printing step, so the protective layer of the appropriate shape , The ink layer, and the adhesive layer can be printed so as to properly overlap. Then, since the backing sheet is peeled off after the protective sheet is attached, the backing sheet can be peeled off without damaging the water transfer mark formed by printing.

  Here, in the cutting step, the backing sheet may be peeled off and then cut into strips, or may be cut into strips and then the backing sheet may be peeled off. When the backing sheet is to be peeled off before cutting, the work to peel the backing sheet is reduced, and after the backing sheet is peeled off, the ink layer can be visually recognized from both the base backing sheet side and the protective sheet side. It is easy to check the cutting position when cutting into strips, and when cutting into strips with multiple crosses etc., align so that the crosses etc. are cut so as to be biased toward one side in the width direction of the strips. Is also easy. In addition, when the transparent plastic film has the same size as the composite paper, it is easy to carry out the attaching operation and the cutting operation. Since the transparent plastic film is finally cut into a strip shape, the size of the transparent plastic film may be larger than that of the composite paper.

  The marker for radiotherapy manufactured by the manufacturing method of the present invention is easy to store, easy to stick to the skin, and easy to peel off the base paper containing water, and it is possible to make an accurate marking and the kind of mark. It will be easy to grasp.

  According to the present invention, the adhesion when pressed against the skin of a patient is not impaired in use, and the risk of damage during storage can be reduced, and furthermore, accurate marking is possible and the mark It is possible to provide a marker for radiation treatment which makes it easy to identify the type.

It is a schematic diagram which illustrates a mode that the mark for radiotherapy was given to the skin of a patient using the marker for radiotherapy of Example 1. FIG. The marker (straight line) for radiotherapy of Example 1 is shown, (A) is a principal part expanded sectional view, (B) is a disassembled perspective view. FIG. 6 is a six-sided view and an exploded bottom view of the radiotherapy marker (straight line) of Example 1; The marker (cross) for radiotherapy of Example 1 is shown, (A) is a principal part expanded sectional view, (B) is a disassembled perspective view. FIG. 6 is a six-sided view and an exploded bottom view of the radiotherapy marker (cross) of Example 1; The marker for radiotherapy (round cross) of Example 1 is shown, (A) is a principal part expanded sectional view, (B) is a disassembled perspective view. FIG. 6 is a six-sided view and an exploded bottom view of the radiotherapy marker (round cross) of Example 1; 5 is an explanatory view showing a procedure for applying a linear mark to the skin in Example 1. FIG. FIG. 7 is an explanatory view showing a procedure for applying a cross mark to the skin in Example 1; FIG. 7 is an explanatory view showing a procedure of applying a circle cross mark to the skin in Example 1; FIG. 7 is an explanatory drawing showing the manufacturing process of the radiotherapy marker of Example 1. 5 is an explanatory view showing a printing step of the radiotherapy marker of Example 1. FIG.

  Hereinafter, modes for carrying out the present invention will be described based on examples.

  The present embodiment relates to a water transfer type radiotherapy marker which is used by cutting it into a predetermined length for attaching the radiotherapy marks A, B and C to the skin of a patient as shown in FIG. . The straight mark A is used as a mark for placing the patient on the treatment bed in an appropriate posture, and indicates the direction. The cross mark B is used as a mark representing the boundary of the irradiation range of radiation, and specifies the position. A round cross mark C is used as a mark for identifying an affected area, and specifies the position.

  The radiotherapy marker 10 for attaching the linear mark A to the skin of the patient is, as shown in FIG. 2, a protective layer 11, an ink layer 12 representing the mark to be transferred to the skin, and an adhesive for adhering to the skin A water transfer mark 14 on which the layer 13 is laminated is formed on the back side of the base paper 15, and a protective sheet 16 is attached to the back side of the water transfer mark 14. The protective layer 11 is formed on the back side of the base paper 15 using a transparent ink, and the ink layer 12 is formed on the back side of the protective layer 11 so as to fit inside the protective layer 11 using an opaque ink. Is formed on the back surface side of the ink layer 12 so as to cover the ink layer 12 and the protective layer 11 using a transparent resin ink which exhibits adhesiveness by wetting.

  As shown in FIG. 3, the radiotherapy marker 10 uses translucent rice paper as the base paper 15 and uses a transparent plastic film as the protective sheet 16. A water-soluble adhesive layer is formed on the back surface of the base sheet 15. Further, the base sheet 15 and the protective sheet 16 are formed in the shape of a strip having the same width and the same length, and the linear water transfer mark 14 is formed at the center in the width direction. The protective sheet 16 is attached by the adhesive force of the adhesive layer 13 and is separated from the base sheet 15 in the portion where the adhesive layer 13 is not present.

  The radiotherapy marker 20 for attaching the cross mark B to the skin of the patient is, as shown in FIG. 4, a protective layer 21, an ink layer 22 representing the mark to be transferred to the skin, and an adhesive layer for adhering to the skin While forming the water transfer mark 24 in which 23 is laminated | stacked on the back side of the base paper 25, it has the laminated structure which affixed the protective sheet 26 on the back side of this water transfer mark 24. FIG. The protective layer 21 is formed on the back side of the base paper 25 using a transparent ink, and the ink layer 22 is formed on the back side of the protective layer 21 so as to fit inside the protective layer 21 using an opaque ink. Is formed on the back surface side of the ink layer 22 so as to cover the ink layer 22 and the protective layer 21 using a transparent resin ink which exhibits adhesiveness by wetting.

  As shown in FIG. 5, the radiotherapy marker 20 uses translucent rice paper as the base paper 25 and uses a transparent plastic film as the protective sheet 26. A water-soluble adhesive layer is formed on the back surface of the base paper 25. Also, the base board 25 and the protective sheet 26 are formed in the shape of a strip having the same width and the same length, and the water transfer marks 24 of the cross are arranged at predetermined intervals in the longitudinal direction while being biased toward one side in the width direction of the base board 25. 8 pieces are formed in. The protective sheet 26 is attached by the adhesive force of the adhesive layer 23 and is separated from the base paper 25 in the portion where the adhesive layer 23 is not present.

  As shown in FIG. 6, the radiotherapy marker 30 for applying the mark C of the round cross to the skin of the patient is a protective layer 31, an ink layer 32 representing the mark to be transferred to the skin, and an adhesive for adhering to the skin. A water transfer mark 34 formed by laminating the layers 33 is formed on the back side of the base paper 25, and a protective sheet 36 is attached to the back side of the water transfer mark 24. The protective layer 31 is formed on the back side of the base paper 35 using a transparent ink, and the ink layer 32 is formed on the back side of the protective layer 31 so as to fit inside the protective layer 31 using an opaque ink. Is formed on the back surface side of the ink layer 32 so as to cover the ink layer 32 and the protective layer 31 using a transparent resin ink which exhibits adhesiveness by wetting.

  As shown in FIG. 7, the radiotherapy marker 30 uses translucent rice paper as the base paper 35 and uses a transparent plastic film as the protective sheet 36. A water-soluble adhesive layer is formed on the back of the base paper 35. Further, the base paper 35 and the protective sheet 36 are formed in the shape of a strip having the same width and the same length, and the water transfer marks 34 of the circular cross are arranged at predetermined intervals in the longitudinal direction while being biased toward one side in the width direction of the base paper 25. 8 pieces are formed in the same manner. The protective sheet 36 is attached by the adhesive force of the adhesive layer 33, and in a portion where the adhesive layer 33 is not present, it is separated from the base paper 35.

  2 (A), 4 (A), and 6 (A) for the convenience of drawing, the ink layers 12, 22,, and the protective layers 11, 21, 31 and the adhesive layers 13, 23, 33, respectively. Although it is shown that 32 bites in, it is apparent from the manufacturing process described later that the protective layers 11, 21, 31 and the adhesive layers 13, 23, 33 sandwich the ink layers 12, 22, 32 from the front and back. It has become in close contact with the Further, a light transmitting intermediate layer is interposed between the protective layers 11, 21, 31 and the ink layers 12, 22, 32, and between the ink layers 12, 22, 32 and the adhesive layers 13, 23, 33. I don't care.

  The radiotherapy markers 10, 20, 30 are cut with a scissors to make marker pieces 10a, 20a, 30a as shown in FIG. 8 to FIG. 10, and then the protective sheets 16, 26, 36 are peeled off. , 25 and 35, make positioning so as to press against the skin, and after water is contained in the base paper 15, 25 and 35 using absorbent cotton etc. containing water, the base paper 15, 25 and 35 is peeled off The marks A, B, and C are attached to the skin so as to be transferred. Since the radiotherapy markers 20 and 30 are for transferring the marks B and C specifying the position to the skin of the patient, as shown in FIGS. 9 and 10, the water transfer marks 24 and 34 are used. Is cut to use as a single substance. Since the radiotherapy marker 10 is for transcribing onto the patient's skin the mark A indicating the direction for placing the patient on the therapy bed in the correct posture, the radiotherapy marker 10 has a desired length, as shown in FIG. Although cut and used, it may be used without cutting.

  Next, a method of manufacturing the radiotherapy markers 10, 20, and 30 will be described based on FIGS. 11 and 12 with the radiotherapy marker 20 as an example.

  First, an A4 size composite paper is prepared in which a semi-transparent rice paper to be the base paper 25 is laminated on the back side with the paper 40. In the present embodiment, a double paper (base paper + rice paper, product name: DP (0.23 mm in thickness)) manufactured by Marushige Co., Ltd. was used.

  As shown in FIG. 11 (A), the rice paper (base backing paper 25) side is used as the printing surface, starch paste is coated and dried, and a water-soluble adhesive layer is formed on the back side of rice paper (base backing paper 25). .

  Next, as shown in FIG. 11 (B) and FIG. 12 (A), by screen printing using a transparent ink (printing ink for polyester nameplate of Teikoku Ink Mfg. Co., Ltd., product name: EG screen ink) A protective layer 21 is formed on the back side of the adhesive layer.

  Next, as shown in FIG. 11 (C) and FIG. 12 (B), black ink (ink for screen printing by Nagase Screen Printing Laboratory Co., Ltd., product name: Fujiron Black (dilution solvent, the company's Product name: Eight solvent (slow drying)) is used to form the ink layer 22 on the back surface side of the protective layer 21 so as to fit inside the protective layer 21.

  Next, as shown in FIG. 11 (D) and FIG. 12 (C), a transparent resin ink (product name of Nagoya Three Bond Co., Ltd .: Liquidine THB-102) which exhibits adhesiveness by wetting by screen printing is used. An adhesive layer 23 is formed on the back surface side of the ink layer 22 so as to cover the ink layer 22 and the protective layer 21.

  Next, as shown in FIG. 11E, a transparent protective sheet 26 of A4 size is attached to the back surface side of the adhesive layer 23. In this example, a polypropylene sheet from Lintec Co., Ltd., product name: SP-PP-40) was used as the protective sheet 26.

  Next, as shown in FIG. 11 (F), the backing sheet 40 is peeled off, and further, as shown in FIG. 11 (G), it is cut into strips at a cutting line 50 of a predetermined width. Thereby, as shown in FIG. 11H, the radiotherapy marker 20 is manufactured.

  According to the method of manufacturing a marker for radiation therapy of the above-described embodiment, even in the case of rice paper having the weakness of stiffness when applied to the skin, the stiffness is secured by the backing sheet 40 in the printing step, Protective layers 11, 21, 31, ink layers 12, 22, 32, and adhesive layers 13, 23, 33 of appropriate shapes can be overlapped and printed. Then, since the backing sheet 40 is peeled off after the protective sheet 50 is attached, the backing sheet 40 can be peeled off without damaging the water transfer marks 14, 24, 34 formed by printing. In this way, after the backing sheet 40 is peeled off, the ink layers 12, 22 and 32 can be visually recognized from both the base backing sheets 15, 25 and 35 and also from the protective sheets 16, 26 and 36. It is easy to check the cutting position of the above, and it is also easy to align so that the crosses or the like are cut so as to be biased to one side in the width direction of the strip when cutting into a strip provided with a plurality of crosses or the like. Further, since the composite paper and the transparent plastic film have the same size, alignment in the pasting operation and the cutting operation is easy.

  According to the radiotherapy markers 10, 20 and 30 of the example, since the base paper 15, 25 and 35 is made of translucent rice paper and the protective layers 11, 21 and 31 are transparent, as shown in FIG. As shown in FIG. 5 and FIG. 7, the ink layers 12, 22 and 32 formed by the black ink are seen through from the surface side of the base paper 15, 25 and 35. In addition, since the base paper 15, 25, 35 is a semi-transparent rice paper, the stiffness is weak, and the protective sheets 16, 26, 36 are peeled off as shown in FIGS. , 24 and 34 do not interfere with the adhesion. Therefore, accurate marking on the skin by water transfer is possible. On the other hand, since a transparent plastic film is used as the protective sheets 16, 26, 36, it is possible to cover the stiffness of the base sheets 15, 25, 35 when storing the radiotherapy markers 10, 20, 30. it can. In addition, the protective sheets 16, 26, and 36 are made of a transparent plastic film, and the adhesive layers 13, 23, and 33 are made of a transparent resin ink. Therefore, the bottom views of FIGS. As shown in, the mark can be visually recognized even if it is turned over. As a result, when various marks A, B, C such as crosses or straight lines are used for radiotherapy, appropriate radiotherapy markers 10, 20, 30 can be selected smoothly.

  Also, according to the radiotherapy marker 20 for transferring the cross mark B to the skin of the patient, and the radiotherapy marker 30 for transferring the round cross mark C to the skin of the patient, a plurality is formed. A necessary number of water transfer marks 24, 34 can be separated and used. Under the present circumstances, since the markers 20 and 30 for radiotherapy can visually recognize the water transfer marks 24 and 34 also from front and back, it can perform isolation | separation operation correctly. In addition, since the water transfer marks 24 and 34 of crosses and round crosses in the strip-like radiotherapy markers 20 and 30 are formed to be biased to one side in the width direction, the other side in the width direction is a margin, and The protective sheets 26 and 36 are separated from the backing sheets 25 and 35. Therefore, as shown in FIGS. 9 and 10, the small marker pieces 20a after peeling off the protective sheets 26 and 36 from the marker pieces 20a and 30a which are separated into small chips or after peeling off the protective sheets 26 and 36. , 30a on the skin, or when peeling off the base paper 25 or 35 containing water, this margin can be picked up with a finger to perform work. Further, since only the required number of water transfer marks 24 and 34 formed by arranging a plurality of pieces are separated and used, there is also an effect that it is difficult to cause the protective sheets 26 and 36 to fall off during storage.

  As described above, according to the manufacturing method for radiation therapy of the embodiment, it is easy to store, easy to attach to the skin and to peel off the base paper containing water, and accurate marking is possible. The radiotherapy markers 10, 20 and 30 which are easy to identify the type can be manufactured. And, according to the markers for radiotherapy 10, 20 and 30 of the embodiment, there is no hindrance to the adhesion when pressed against the skin of the patient in use, and the risk of damage during storage is also reduced In addition, it is possible to provide a marker for radiotherapy that can be accurately marked and easily grasped the kind of mark.

  As described above, according to the embodiment, it is easy to store, easy to attach to the skin, and to peel off the base paper 15, 25, 35 containing water, so that accurate marking is possible and the type of the mark is It is possible to manufacture radiotherapy markers 10, 20, 30 which are easy to be grasped, and these radiotherapy markers 10, 20, 30 have a problem in adhesion when they are pressed against the skin of a patient in use. The risk of damage during storage can also be reduced, and moreover, accurate marking is possible and the kind of mark can be easily grasped.

  As mentioned above, although the Example of this invention was described, this invention is not limited to this, It can implement variously within the range which does not deviate from the summary.

  For example, the composite paper and the transparent plastic film used in the manufacturing method are not limited to the A4 size, and the plastic film may be larger than the composite paper. Further, the type of ink is not limited to those described in the embodiments, and the color of the opaque ink is not limited to the black ink as long as the color can be viewed through the semi-transparent rice paper. In addition, transparent plastic films other than polypropylene such as PET may be used as the protective sheet. Furthermore, in the manufacturing method, the backing sheet 40 may be peeled off after being cut into strips.

  The present invention can be used for marking work in radiation therapy.

  A, B, C: mark for radiotherapy, 10, 20, 30: radiotherapy marker, 10a, 20a, 30a: marker piece, 11, 21, 31: protective layer, 12 22, 22, ink layer 13, 23, 33 adhesive layer 14, 24, 34 water transfer mark 15, 25, 35 base paper (rice paper) 16, 26, 36 ... protective sheet (transparent plastic film), 40 ... mount, 50 ... cutting line.

Claims (3)

A water transfer mark formed by laminating a protective layer having light transparency, an ink layer representing a mark to be transferred to the skin, and an adhesive layer to be adhered to the skin is attached to the skin and used as a mark in radiation therapy. What is claimed is: 1. A marker for radiotherapy, which is characterized by comprising the following constitution.
(1A) The water transfer mark is formed on the back side of a base paper made of translucent rice paper having a water-soluble adhesive layer formed on the back side, and a transparent plastic film is formed on the back side of the water transfer mark. have a configured protected laminated structure in which a sheet is attached to, that are as viewable said water transfer mark both from the protective sheet side from the base mount side.
(1B) The protective layer is formed on the back side of the water-soluble adhesive layer using a transparent ink, and the ink layer is formed on the rear side of the protective layer using an opaque ink so as to fit inside the protective layer The adhesive layer is formed on the back surface side of the ink layer so as to cover the ink layer and the protective layer, using a transparent resin ink which exhibits adhesiveness by wetting. A water transfer mark formed by laminating a protective layer having light transparency, an ink layer representing a mark to be transferred to the skin, and an adhesive layer to be adhered to the skin is attached to the skin and used as a mark in radiation therapy. What is claimed is: 1. A marker for radiotherapy, which is characterized by comprising the following constitution.
(2A) The water transfer mark is formed on the back side of the base paper made of translucent rice paper having a water-soluble paste layer formed on the back side, and a transparent plastic film is formed on the back side of the water transfer mark Having a laminated structure with the constructed protective sheet attached.
(2B) The protective layer is formed on the back side of the water-soluble adhesive layer using a transparent ink, and the ink layer is formed on the back side of the protective layer so as to fit inside the protective layer using an opaque ink. The adhesive layer is formed on the back surface side of the ink layer so as to cover the ink layer and the protective layer, using a transparent resin ink which exhibits adhesiveness by wetting.
(2 C ) The base paper and the protective sheet are formed in the shape of a strip having the same width and the same length, the water transfer marks are constituted by marks representing intersections or intersections, and the water transfer marks are those of the base It is formed in plural so that it may be arranged at a predetermined interval in the longitudinal direction while being biased to one side in the width direction.
( 2D ) The protective sheet is attached by the adhesive force of the adhesive layer, and in a portion where the adhesive layer is not present, the protective sheet is separated from the base sheet. A water transfer mark formed by laminating a protective layer having light transparency, an ink layer representing a mark to be transferred to the skin, and an adhesive layer to be adhered to the skin is attached to the skin and used as a mark in radiation therapy. A method for producing a marker for radiotherapy, comprising the steps of:
(3A) A transparent ink is used on the back surface of the water-soluble adhesive layer formed on the rice paper side of the composite paper of a predetermined size in which translucent rice paper is laminated on a backing sheet. After the protective layer is printed, the ink layer is printed from the back side of the protective layer using the opaque ink so as to fit inside the protective layer, and a transparent resin ink that exhibits adhesiveness by wetting Printing the adhesive layer so as to cover the protective layer and the back surface of the ink layer from the back surface side of the ink layer.
(3B) Protection that applies a transparent plastic film of a size that can cover and hide the entire water transfer mark printed on the composite paper after the printing step on the back surface side of the adhesive layer using the adhesive force of the adhesive layer Sheet sticking process.
(3C) A cutting step of cutting into a strip of a predetermined width in a state where the backing sheet is peeled off from the composite sheet after the protective sheet attaching step.