JP2010284402A - Adhesive sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adhesive sheet which is applied accurately and easily to an attaching position, is small enough to be received within a packaging structure, and thus achieves extensive cost reduction of packaging materials. <P>SOLUTION: The adhesive sheet comprises a support body, an adhesive layer arranged on the support body, and a separator covering and layered on the surface of the adhesive layer in a peelable manner. The adhesive sheet is folded in half at a predetermined position in the longitudinal or in the transverse direction while positioning the separator outside. The separator is divided at a fold line of the half fold. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an adhesive sheet. More specifically, the present invention relates to a pressure-sensitive adhesive sheet that can be applied accurately and easily at an attachment position, and that can be accommodated in a packaging structure with a small size and can realize significant cost reduction of packaging materials. .

  For the purpose of protecting the skin, the wound, or the primary dressing that covers the wound, and preventing contamination, it is generally performed to cover an adhesive sheet such as a film dressing over these. Furthermore, such an adhesive sheet is also used for the purpose of protecting the transdermal absorbent. In such a pressure-sensitive adhesive sheet, a protective film or a carrier is laminated on one surface of a support, and a pressure-sensitive adhesive and a separator are sequentially laminated on the other surface. The adhesive sheet is strongly required to be easily attached (operability), and various improvements have been attempted in order to improve operability. For example, an adhesive sheet in which a separator is divided into a plurality (for example, two) is known. The pressure-sensitive adhesive sheet is peeled off one separator and attached while confirming the position of the adherend site, and then the remaining separator is peeled off and attached as a whole. In addition, for example, a pressure-sensitive adhesive sheet is known in which operability is improved by providing a frame on a protective film or a carrier to improve the self-supporting property after separation of the separator.

  However, the pressure-sensitive adhesive sheet as described above is not yet sufficient in operability. That is, when the transparency after separation of the separator (that is, the carrier, the support, and the adhesive) is not sufficient, it is difficult to apply the adhesive while confirming the position of the deposition site. In many cases, it is difficult to apply the paste in a desired state. In many cases, attachment is more difficult when the adherend is a color similar to the surrounding color, or when the area of the adherent is large and close to the size of the adhesive sheet. As a result, there is a problem that the adherend part cannot be placed and pasted in the center of the adhesive sheet, the adherent part protrudes from the adhesive sheet, wrinkles or curling occurs, the original protective function and contamination of the adhesive sheet The prevention function often does not work sufficiently.

  By the way, in many cases, the adhesive sheet is provided by being accommodated in a packaging structure. In a packaging structure containing an adhesive sheet, a considerable part of the cost is related to the packaging material. Therefore, as one measure for reducing the cost of the pressure-sensitive adhesive sheet, it is strongly desired to reduce the cost of the packaging material.

Japanese Utility Model Publication No. 62-191834 Japanese Utility Model Publication No. 1-104123 Japanese Utility Model Publication No. 61-180024

  The present invention has been made to solve the above-described conventional problems, and the object of the present invention is that it can be applied accurately and easily at the attachment position, and in addition, it can be accommodated in a packaging structure with a small size. It is an object of the present invention to provide an adhesive sheet that can be realized and can realize a significant cost reduction of packaging materials.

The pressure-sensitive adhesive sheet according to one embodiment of the present invention has a support, a pressure-sensitive adhesive layer provided on the support, and a separator that is peelably laminated so as to cover the surface of the pressure-sensitive adhesive layer. The separator is folded in two at a predetermined position in the longitudinal direction or in the lateral direction, and the separator is divided at the folded portion of the fold.
A pressure-sensitive adhesive sheet according to another embodiment of the present invention has a support, a pressure-sensitive adhesive layer provided on the support, and a separator that is peelably laminated so as to cover the surface of the pressure-sensitive adhesive layer. The separator is folded outward at predetermined two locations in the longitudinal direction or the short direction to form three folds, and the separator is divided into one of the fold portions at the two locations.
In preferable embodiment, the said separator has the extension part extended outside from the said adhesive layer edge part of the said division | segmentation part.
In a preferred embodiment, at least one of the divided separators has a folded portion at an end portion on the divided portion side.
In a preferred embodiment, the pressure-sensitive adhesive sheet further includes a carrier that is detachably laminated with the support on the surface of the support that is not provided with the pressure-sensitive adhesive layer.
In a preferred embodiment, the portion of the carrier corresponding to the fold is tearable.
In a preferred embodiment, at least one of the support and the pressure-sensitive adhesive layer is translucent or opaque.
In a preferred embodiment, the pressure-sensitive adhesive layer contains a drug.

  According to the present invention, by folding the adhesive sheet in two or three, it is possible to attach it accurately and easily to the application position, and in addition, it can be accommodated in a packaging structure with a small size and greatly increases the packaging material. A pressure-sensitive adhesive sheet that can realize cost reduction can be obtained.

It is a schematic plan view explaining the state which expanded the adhesive sheet by one embodiment of this invention. It is a schematic sectional drawing by the BB line of the adhesive sheet of FIG. 1A. It is a schematic sectional drawing explaining the provision form of the adhesive sheet by one embodiment of this invention. It is the schematic for demonstrating the sticking procedure of the adhesive sheet of this invention. It is a schematic sectional drawing explaining the provision form of the adhesive sheet by another embodiment of this invention.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to these specific embodiments.

  FIG. 1A is a schematic plan view illustrating a state in which an adhesive sheet according to one embodiment of the present invention is unfolded; FIG. 1B is a schematic cross-sectional view taken along line BB of the adhesive sheet of FIG. 1A; These are schematic sectional drawings explaining the provision form of the adhesive sheet by one Embodiment of this invention. For ease of viewing, the vertical, horizontal, and thickness ratios in the illustrated example are different from the actual ones, and the vertical, horizontal, and thickness ratios are different between FIGS. 1A and 1B and FIG. 1C. As shown in FIG. 1A and FIG. 1B, the adhesive sheet 100 is peeled so as to cover the support 10, the adhesive layer 20 provided on the support 10, and the surface of the adhesive layer 20 in the unfolded state. The separator 30 is laminated. Preferably, like the example of illustration, the adhesive sheet 100 further has the carrier 40 laminated | stacked on the side of the support body 10 in which the adhesive layer 20 is not provided so that peeling with the support body 10 was possible. In the present invention, as shown in FIG. 1C, the pressure-sensitive adhesive sheet 100 is folded in two at a predetermined position in the longitudinal direction or short-side direction of the pressure-sensitive adhesive sheet with the separator 30 as the outside. Therefore, in the illustrated example, the bent portions of the carrier 40 bent at the innermost side face each other. By folding the pressure-sensitive adhesive sheet in half, the area in the form of providing the pressure-sensitive adhesive sheet can be almost halved. As a result, the size of the packaging structure (the amount of packaging material used) can be almost halved when it is housed and provided in a sealed packaging structure such as when the adhesive sheet is a transdermal absorbent. . Therefore, according to the present invention, the packaged adhesive sheet can be provided at a significantly lower cost.

  As shown in FIG. 1B and FIG. 1C, the separator 30 is divided into a first divided piece 30a and a second divided piece 30b at the fold portion. The position of the two-fold fold portion can be appropriately set according to the purpose, the state of the deposition site, and the like. Preferably, as in the illustrated example, the position of the crease portion is substantially the center in the longitudinal direction or the short direction of the adhesive sheet. By folding in half at the substantially central portion of the pressure-sensitive adhesive sheet, positioning and affixing operation with respect to the adhesion site of the pressure-sensitive adhesive sheet are facilitated. Furthermore, since the area in the provision form of an adhesive sheet can be made the smallest, the most excellent cost reduction effect can be implement | achieved.

  Preferably, as in the illustrated example, the end of the first divided piece 30a on the divided portion side is in a direction substantially perpendicular to the separation direction of the separator (that is, the vertical direction of the paper surface of FIG. 1A, the paper surface of FIG. 1C). The folding | returning part 30c extended along a perpendicular | vertical direction is provided. By providing the folded portion, the separator can be easily peeled off, and a pressure-sensitive adhesive sheet having excellent operability can be obtained in combination with the ease of positioning and sticking by folding the pressure-sensitive adhesive sheet in half. The folded portion may be provided only on the first divided piece 30a as in the illustrated example, or may be provided only on the second divided piece 30b. Both the first divided piece 30a and the second divided piece 30b may be provided. May be provided.

  Preferably, for each of the first divided piece 30a and the second divided piece 30b of the separator 30, the extended portions 30d and 30d extending outward from the end of the pressure-sensitive adhesive layer 20 (folded portion of the pressure-sensitive adhesive layer) of the divided portion. Is provided. By providing the extending portion, the separation operation of the separator is further facilitated. Furthermore, since exposure of the crease portion of the pressure-sensitive adhesive layer can be prevented, contamination of the surface of the pressure-sensitive adhesive layer (particularly, the pressure-sensitive adhesive layer of the fold portion) can be prevented. Furthermore, the operability in sticking the adhesive sheet can be significantly improved. Such an extension part can be provided by folding the pressure-sensitive adhesive sheet having a structure as shown in FIG. 1B, for example. That is, in a state where the adhesive sheet is spread, the first divided piece 30a is arranged so that the inner end thereof overlaps the inner end of the second divided piece 30b. The fold portion 50 may be configured to be positioned at the overlapping portion of the first divided piece 30a and the second divided piece 30b, and more preferably at a substantially central portion of the overlapping portion. With such a configuration, when the fold portion 50 is folded in half, the ends of the extended portions 30d and 30d can be positioned on the same plane. As a result, it is possible to prevent the crease portion of the pressure-sensitive adhesive layer from being exposed as described above, and to significantly improve the operability in attaching the pressure-sensitive adhesive sheet.

  Any appropriate film can be adopted as the support 10 as long as it can be used for an adhesive sheet. Typically, a film that has flexibility and does not damage the surface of a living body such as skin may be employed. Specific examples of such film materials include acrylic polymers, polyethylene, ethylene-vinyl acetate copolymers, polyurethanes, polyether polyesters, and polyamide derivatives. As thickness of the support body 10, arbitrary appropriate thickness may be employ | adopted according to the objective and a use. The thickness of the support is preferably 5 μm to 150 μm, more preferably 10 μm to 75 μm. If it is such thickness, it is excellent in the followability to the unevenness | corrugation of the biological body surface (for example, skin), and can function favorably as a base material of an adhesive sheet.

  As the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer 20, any appropriate pressure-sensitive adhesive can be adopted as long as it can be used by being attached to the outer surface of the transdermal absorbent and / or the living body surface. Specific examples of such pressure-sensitive adhesives include natural rubber-based, synthetic rubber-based, acrylic-based, and silicone-based pressure-sensitive adhesives. Acrylic adhesive is preferred. This is because the stimulation given to the skin can be further suppressed. Among acrylic adhesives, oily gel acrylic adhesives are particularly preferable. This is because it is hypoallergenic to scars and suture wounds as well as to skin with photosensitivity and photoallergy. Details of the oily gel-like acrylic pressure-sensitive adhesive are described in JP-A-6-319793, the description of which is incorporated herein by reference. As thickness of the adhesive layer 20, arbitrary appropriate thickness may be employ | adopted according to the objective and a use. The thickness of the pressure-sensitive adhesive layer is preferably 5 μm to 60 μm, more preferably 10 μm to 50 μm. If it is such thickness, since it is excellent in the adhesiveness to the biological body surface, the sticking adhesive sheet can prevent the peeling and peeling well.

  Any appropriate method can be adopted as a method of providing the pressure-sensitive adhesive layer 20 on the surface of the support 10. Specific examples include a method in which the pressure-sensitive adhesive composition is applied on a support film and dried, and a method in which a pressure-sensitive adhesive layer obtained by molding the pressure-sensitive adhesive composition into a predetermined shape is laminated on the support film.

  In one embodiment, the pressure-sensitive adhesive layer contains a drug. That is, the pressure-sensitive adhesive sheet of the present invention can be a transdermal absorbent or a drug-containing pressure-sensitive adhesive sheet. As a drug contained in the pressure-sensitive adhesive layer, any appropriate drug can be selected depending on the purpose as long as transdermal absorption is possible. Specific examples of drugs include general anesthetics, hypnotics / sedatives, antiepileptics, antipyretic analgesics, antipruritics, psychiatric drugs, local anesthetics, skeletal muscle relaxants, autonomic drugs, antispasmodics Anti-parkinsonian, antihistamine, cardiotonic, arrhythmic, diuretic, antihypertensive, vasoconstrictor, coronary vasodilator, peripheral vasodilator, arteriosclerosis, cardiovascular, respiratory accelerator, Antitussive expectorant, hormonal agent, topical suppurative agent, analgesic / antipruritic / astringent / anti-inflammatory agent, parasitic skin disease agent, hemostatic agent, gout treatment agent, antidiabetic agent, antineoplastic agent, Antibiotics, chemotherapeutic drugs, narcotics. The content of the drug in the pressure-sensitive adhesive layer can be appropriately set according to the type of drug, the purpose of administration, and the like. For example, the drug can be contained in the pressure-sensitive adhesive layer preferably in the range of 0.5 wt% to 60 wt%.

  Any appropriate separator can be adopted as the separator 30 as long as it can be satisfactorily peeled off from the pressure-sensitive adhesive layer 20. Typically, the separator has a base and a release treatment layer formed on the surface of the base. Specific examples of the substrate include plastic films (for example, polyethylene, polypropylene, polyester, or laminated composites thereof) and paper (for example, fine paper, kraft paper, etc.). The release treatment layer can be formed by subjecting the substrate surface to a silicone resin treatment, a fluorine resin treatment, or the like. The thickness of the separator can be appropriately set according to the purpose. The thickness of the separator is preferably 50 μm to 250 μm, more preferably 75 μm to 200 μm.

  The carrier 40 is a layer (or film) for imparting rigidity and shape retention to the pressure-sensitive adhesive sheet and improving handleability. By using a carrier, the pressure-sensitive adhesive sheet can be prevented from floating during the attaching operation. Furthermore, the carrier 40 prevents the adhesive sheet from being damaged or damaged before use, and also functions as a protective layer that keeps the surface in a sterile state for a long time when the adhesive sheet is sterilized. The carrier 40 can be made of any appropriate material depending on the purpose. Specific examples of such materials include plastic films (for example, polyethylene, polypropylene, polyester, or laminated composites thereof) and paper (for example, high-quality paper, kraft paper, etc.). The thickness of the carrier 40 can vary depending on the application and the constituent materials. The thickness of the carrier is preferably 15 μm to 200 μm, more preferably 20 μm to 100 μm.

  Any appropriate method can be used as the method of laminating the carrier 40 on the surface of the support 10 in a peelable manner. Specific examples of such a method include inflation molding, extrusion lamination molding, lamination molding, and casting.

  The carrier 40 is preferably tearable, and more preferably tearable at a portion corresponding to the fold. By making the carrier tearable, the carrier can be peeled off significantly after the adhesive sheet is pasted. Arbitrary appropriate structures may be employ | adopted as a structure which can be torn. Specific examples include perforations, perforations, cuts, and folds.

  Preferably, at least one of the support 10 and the pressure-sensitive adhesive layer 20 (and the carrier when the carrier 40 is provided) is translucent or opaque. Depending on the use of the pressure-sensitive adhesive sheet, it may be preferable to color the support 10 and / or the pressure-sensitive adhesive layer 20 (for example, by making the color similar to that of human skin to make it inconspicuous) . In this case, in the conventional pressure-sensitive adhesive sheet, it is difficult to apply the adhesive sheet while confirming the position of the deposition site due to insufficient transparency after separation of the separator (that is, the support and the pressure-sensitive adhesive layer). As a result, in many cases, it is often difficult to affix to the deposition site in a desired state. On the other hand, according to the present invention, it is possible to easily perform positioning with respect to the adherend site by configuring the pressure-sensitive adhesive sheet as a half-fold, so that such a problem can be solved. Therefore, even when the support 10 and / or the pressure-sensitive adhesive layer 20 is colored, the pressure-sensitive adhesive sheet can be accurately attached to the application site in a desired state. More specifically, as shown in FIG. 2A, the folded fold portion 50 is aligned with the central portion of the deposition site 60. Next, the folded portion 30c of the first divided piece 30a of the separator 30 is grasped, and the first divided piece 30a is peeled off, and half of the adhesive sheet is applied to the adherend site 60 as shown in FIG. wear. Next, the adhesive sheet is attached to the remaining part of the application site while peeling off the second divided piece 30b, whereby the attachment of the adhesive sheet is completed as shown in FIG. As described above, even when the support 10 and / or the pressure-sensitive adhesive layer 20 is colored, the pressure-sensitive adhesive sheet can be adhered to the application site in a desired state and accurately. This is one of the achievements of the present invention. In addition, by providing a folding part also in the 2nd division | segmentation piece 30b, the peeling operation of the 2nd division | segmentation piece 30b becomes still easier, and possibility of touching a deposition site | part can be made remarkably small.

  FIG. 3 is a schematic cross-sectional view illustrating a form of providing an adhesive sheet according to another embodiment of the present invention. This adhesive sheet 100 'has a form substantially similar to the form shown in FIGS. 1A and 1B in the unfolded state. In the embodiment of FIG. 3, the adhesive sheet 100 ′ is folded in three at a predetermined two locations in the longitudinal direction or the short direction with the separator 30 as the outside. By making the adhesive sheet into three folds, the area in the form of providing the adhesive sheet can be reduced to almost １ ／. As a result, the size of the packaging structure (the amount of packaging material used) can be reduced to approximately 1/3, and according to this embodiment, the packaged adhesive sheet can be provided at a lower cost.

  The positions of the two folds of the three folds can be appropriately set according to the purpose, the state of the deposition site, and the like. Preferably, the positions of the two crease portions can be set so as to divide the adhesive sheet into approximately three equal parts. By setting it as such a structure, since the area in the provision form of an adhesive sheet can be made the smallest, the most outstanding cost reduction effect can be implement | achieved. In the present embodiment, as shown in FIG. 3, the separator 30 is divided into a first divided piece 30a and a second divided piece 30b on one of the two folds of the three folds. Although the separator 30 may be divided into three at both of the two crease portions, it is preferable to divide the separator into two as described above in consideration of the operability of sticking. Preferably, for each of the first divided piece 30a and the second divided piece 30b of the separator 30, the extended portions 30d and 30d extending outward from the end of the pressure-sensitive adhesive layer 20 (folded portion of the pressure-sensitive adhesive layer) of the divided portion. Is provided. Further, preferably, as shown in the illustrated example, the end of each of the first divided piece 30a and the second divided piece 30b on the divided portion side has a direction substantially perpendicular to the separation direction of the separator (that is, FIG. 1A). Folding portions 30c and 30c are provided that extend along the vertical direction of the paper surface of FIG. 1C and the direction perpendicular to the paper surface of FIG. 1C. By providing the folded portion, the separator can be easily peeled off, and a pressure-sensitive adhesive sheet having excellent operability can be obtained in combination with the ease of positioning and sticking by folding the pressure-sensitive adhesive sheet. The folded portion may be provided on both the first divided piece 30a and the second divided piece 30b as in the illustrated example, may be provided only on the first divided piece 30a, or only on the second divided piece 30b. May be provided. Preferably, the folded portion is provided on both the first divided piece 30a and the second divided piece 30b as in the illustrated example. By providing the folded portion on both, a pressure-sensitive adhesive sheet having even better operability can be obtained.

  EXAMPLES Hereinafter, although an Example demonstrates this invention concretely, this invention is not limited by these Examples.

[Example 1]
A support having a thickness of 30 μm made of a translucent polyethylene terephthalate film was extrusion laminated to a carrier having a thickness of 40 μm made of a biaxially oriented polypropylene (OPP) film. A pressure-sensitive adhesive layer made of a transparent acrylic pressure-sensitive adhesive was provided on the support surface of the laminate so as to have a thickness of 30 μm. On the other hand, a silicone resin treatment was performed on one side of a 100 μm thick paper to obtain a separator. The obtained separator was divided into a first divided piece and a second divided piece. At this time, when the outer end of the second divided piece is aligned with the outer end of the pressure-sensitive adhesive layer, the inner end of the second divided piece is positioned at a substantially central portion in the longitudinal direction of the pressure-sensitive adhesive layer. The second divided piece was formed so as to have a proper size. The said 2nd division | segmentation piece was bonded together to the adhesive surface of the said adhesive layer so that the outer side edge part and the outer side edge part of an adhesive layer might correspond. Next, a folded portion is provided at the inner end portion of the first divided piece, and the inner layer end portion of the first divided piece is overlapped with the inner end portion of the second divided piece by about 7 mm. The 1st division | segmentation piece was bonded together to the remaining part of the adhesive surface, and the adhesive sheet as shown to FIG. 1A and FIG. This pressure-sensitive adhesive sheet was punched out to 90 mm × 90 mm with a spring blade. The punched pressure-sensitive adhesive sheet was folded in half so that the carrier was inside at the overlapping portion of the first divided piece and the second divided piece to obtain a pressure-sensitive adhesive sheet as shown in FIG. 1C. Here, the end portion on the overlapping portion side of the first divided piece and the second divided piece becomes an extending portion that extends outward from the end portion of the crease portion of the pressure-sensitive adhesive layer in a folded state, Exposure of the adhesive layer was prevented.

[Example 2]
A pressure-sensitive adhesive sheet was produced in the same manner as in Example 1 except that a folded portion was provided at the inner end of the second divided piece.

[Example 3]
In the same manner as in Example 1, a laminate of a carrier / support / adhesive layer and a separator were obtained. The obtained separator was divided into a first divided piece and a second divided piece. At this time, when the outer end portion of the second divided piece is aligned with the outer end portion of the pressure-sensitive adhesive layer, the inner end portion of the second divided piece is positioned at approximately 2/3 of the longitudinal direction of the pressure-sensitive adhesive layer. The 2nd division | segmentation piece was formed so that it might become such a size. Further, a folded portion was provided at the inner end of the second divided piece. The said 2nd division | segmentation piece was bonded together to the adhesive surface of the said adhesive layer so that the outer side edge part and the outer side edge part of an adhesive layer might correspond. Next, a folded portion is provided at the inner end portion of the first divided piece, and the inner layer end portion of the first divided piece is overlapped with the inner end portion of the second divided piece by about 7 mm. The 1st division | segmentation piece was bonded together to the remaining part of the adhesive surface, and the adhesive sheet was obtained. This pressure-sensitive adhesive sheet was punched out to 90 mm × 90 mm with a mainspring blade. The punched pressure-sensitive adhesive sheet is folded back so that the carrier is on the inner side at approximately the center of the second divided piece, and further, the carrier is on the inner side at the overlapping portion of the first divided piece and the second divided piece. In addition, the folded portion was folded so as to overlap the folded portion. As described above, an adhesive sheet as shown in FIG. 3 was obtained. Here, the end portion on the overlapping portion side of the first divided piece and the second divided piece is outward from the end portion of the fold portion of the pressure-sensitive adhesive layer on the side where the separator is divided in a state where it is folded in three. It became the extended part which extended, and exposure of the adhesive layer was prevented.

[Comparative Example 1]
A pressure-sensitive adhesive sheet was produced in the same manner as in Example 2 except that the sheet was not folded in half.

<Evaluation method>
As a sample for evaluation, a sample in which a translucent pressure-sensitive adhesive sheet (6.5 cm × 6.5 cm) as a deposition site was attached to the central portion of a flesh-colored flat plate (30 cm × 20 cm) was used. An operation of attaching the adhesive sheets obtained in Examples and Comparative Examples to the application site of this sample was performed, (1) ease of alignment, (2) positional deviation of the application site after application, and (3) The sticking operability was evaluated. The pasting operation was performed by five people, and the pasting operator evaluated each item according to the following criteria.
(1) Ease of alignment 3 points: Easy alignment 2 points: Somewhat easy 1 point: Difficult to align (2) Position shift of the adherend after pasting 3 points: Center of the adherend Deviation from 10% or less 2 points: Deviation from the center of the application site is greater than 10% 1 point: The application site protruded from the adhesive tape (3) Adhesive operability 3 points: Easy 2 points: Slightly difficult 1 Point: The average score of all difficult pasting operators was used as an evaluation index. The total score of each evaluation item was used as an index for comprehensive evaluation. The results are shown in Table 1 below.

  As is clear from Table 1, the adhesive sheets of the examples folded in two or in three are significantly higher in overall evaluation than the comparative adhesive sheets that are not folded, and are particularly easy to align. It can be seen that it is expensive. Furthermore, since the area in a provision form becomes very small by folding the adhesive sheet of an Example, the usage-amount of a packaging material can be reduced significantly and the cost reduction effect is very large.

  The pressure-sensitive adhesive sheet of the present invention is suitably used for medical applications, and can be particularly suitably used as a transdermal absorbent, film dressing, and medical cover sheet.

DESCRIPTION OF SYMBOLS 100,100 'Adhesive sheet 10 Support body 20 Adhesive layer 30 Separator 30a 1st division | segmentation piece 30b 2nd division | segmentation piece 30c Folding part 30d Extension part 40 Carrier 50 Folding part

Claims (8)

A support, a pressure-sensitive adhesive layer provided on the support, and a separator laminated so as to cover the surface of the pressure-sensitive adhesive layer in a peelable manner,
The separator is folded in two at a predetermined position in the longitudinal direction or the lateral direction,
The pressure-sensitive adhesive sheet, in which the separator is divided at the two-fold folds. A support, a pressure-sensitive adhesive layer provided on the support, and a separator laminated so as to cover the surface of the pressure-sensitive adhesive layer in a peelable manner,
The separator is folded at two predetermined locations in the longitudinal direction or the short direction, and is folded into three.
The pressure-sensitive adhesive sheet in which the separator is divided at one of the two folds.   The pressure-sensitive adhesive sheet according to claim 1 or 2, wherein the separator has an extending portion extending outward from an end portion of the pressure-sensitive adhesive layer of the divided portion.   The pressure-sensitive adhesive sheet according to any one of claims 1 to 3, wherein at least one of the divided separators has a folded portion at an end portion on the divided portion side.   The pressure-sensitive adhesive sheet according to any one of claims 1 to 4, further comprising a carrier that is releasably laminated with the support on a surface of the support that is not provided with the pressure-sensitive adhesive layer.   The pressure-sensitive adhesive sheet according to any one of claims 1 to 5, wherein a portion corresponding to the fold of the carrier is tearable.   The pressure-sensitive adhesive sheet according to claim 1, wherein at least one of the support and the pressure-sensitive adhesive layer is translucent or opaque. The pressure-sensitive adhesive sheet according to any one of claims 1 to 7, wherein the pressure-sensitive adhesive layer contains a drug.

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