JP2003024370A - Adhesive plaster - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a adhesive plaster excellent in terms of operability and hygiene. SOLUTION: The adhesive plaster has an absorber which comes into contact with the user's lesion; a tape base material which is bonded to this absorber; a tacky adhesive layer which is disposed on the front surface of the tape base material and comes into contact with the user's skin; release paper which is arranged on the front surface of the tacky adhesive layer and the absorber and is stripped in use; first packaging paper which is bonded to the surface of the tape base material on the side opposite to the tacky adhesive layer; and second packaging paper which is bonded to the release paper. The release paper includes two layers; the first release paper and the second release paper of which at least the inner ends are superposed on each other. The second packaging paper includes the first packaging paper fixed to the first release paper and the second packaging paper fixed to the second release paper. The packaging paper is so formed that the absorber side ends of the first packaging paper and the second packaging paper are superposed on the outer side of the absorber.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical patch such as a first aid bandage or an adhesive sheet for skin patch.

[0002]

2. Description of the Related Art There are many types of first-aid bandages that are directly applied to the skin of a patient (user). A general adhesive bandage includes an absorbent body that touches a wound, a tape base material fixed to the absorbent body, a release paper that protects the adhesive layer formed on the surface of the absorbent body and the tape base material, and the entire adhesive bandage. It is composed of a surrounding wrapping paper.

The bag for storing a bandage disclosed in JP-A-8-1410111 is designed to improve usability and post-processing simplicity. That is, by adhering the release paper and the wrapping paper, it is possible to eliminate the trouble of twice by peeling the wrapping paper and then further peeling the release paper.
In such a conventional bandage, the ends of the wrapping paper overlap each other near the center (immediately above the absorber).

[0004]

In the conventional bandage as described above, the end of the wrapping paper is at the center (immediately above the absorber).
Since they overlap in the vicinity, when using, hold the vicinity of the center of the bandage with one hand and peel off one end of the wrapping paper with the other hand to expose the absorbent body half. In the next step, the absorber is completely exposed by peeling the other end of the wrapping paper together with the release paper while the absorber is applied to the wound. At this time, since only half of the absorber is exposed, the edges of the wrapping paper and / or the release paper may hit the wound. In order to apply the bandage so as not to give irritation to the wound, for example, it is necessary to peel the wrapping paper with both hands and face the affected area, and it is difficult to apply the bandage to one's own hand. Moreover, since the ends of the wrapping paper and the release paper overlap on the absorber having a relatively large step, a gap is likely to be formed in that portion. As a result, there is a hygiene problem that various bacteria easily enter the gap.

The present invention has been made in view of the above situation, and an object thereof is to provide a bandage excellent in operability and hygiene.

[0006]

In order to achieve the above object, the adhesive plaster according to claim 1 comprises an absorbent body which comes into contact with an affected part of a user; a tape base material adhered to the absorbent body; A pressure-sensitive adhesive layer provided on the surface of the tape base material and in contact with the user's skin; a release paper disposed on the surfaces of the pressure-sensitive adhesive layer and the absorber and peeled off during use; It is provided with a first wrapping paper fixed to the surface opposite to the adhesive layer; and a second wrapping paper adhered to the release paper. Then, the release paper includes a first release paper and a second release paper in which at least inner ends overlap each other. The second wrapping paper includes a first wrapping paper fixed to the first release paper and a second wrapping paper fixed to the second release paper. The ends of the first wrapping paper and the second wrapping paper on the side of the absorber are made to overlap each other outside the absorber.

According to the invention described in claim 1, the operability is improved and, at the same time, an excellent effect in hygiene is exhibited. That is, since the ends of the first wrapping paper and the second wrapping paper on the absorber side overlap each other on the outside of the absorber, it is possible to minimize the step that is likely to occur in the vicinity of the thick absorber. As a result, it is possible to prevent invasion of various bacteria into the gap, which is advantageous in hygiene. In use, one hand holds the second wrapping paper located outside the absorber, and the other hand pulls up and peels off the end of the first wrapping paper. At this time, since the ends of the first wrapping paper and the second wrapping paper overlap each other on the outside of the absorber, the absorber is completely exposed by the one operation.
As a result, there is no risk of the edges of the wrapping paper coming into contact with the affected area when the adhesive bandage (absorbent body) is applied to the affected area in the next step.

In the invention according to claim 2 of the present application, at least the rigidity of the second release paper is made higher than that of the tape base material and the first wrapping paper. In use, even if the tape base material is largely curved when the first release paper is peeled off from the adhesive layer on the tape base material, the second release paper maintains its original posture (horizontal) without being significantly curved. Therefore, the second release paper can be easily grasped in the next step, and the operability is improved.

In the invention according to claim 3 of the present application, the overlapping portion of the first release paper and the second release paper is located outside the absorber. Thereby, when the first release paper is peeled off from the adhesive layer together with the first wrapping paper, not only the wrapping paper but also the release paper is removed from the absorber, and the absorber is completely exposed. As a result, even when the adhesive bandage is applied to the affected area with the second release paper attached, the release paper does not touch the affected area.

In the invention according to claim 4 of the present application, the end of the second release paper on the side of the overlapping portion with the first release paper is bent toward the second wrapping paper. . With such a configuration, the second release paper can be grasped more easily, and the operability is improved.

In the invention according to claim 5 of the present application, the first wrapping paper is formed of a material having transparency so that the inside of the bandage can be seen. For example, as described in claim 6, the total light transmittance is 20% (JIS K
7105) Mold with the above materials. Thereby, when the adhesive plaster (the tape base material and the absorbent body) is brought into contact with the affected part of the user, the position of the adhesive plaster can be visually confirmed and can be accurately adhered to the affected part.

In the invention according to claim 7 of the present application, the first wrapping paper and the second wrapping paper are 3 mm to 1 mm.
Overlapping in the range of 0 mm. With this configuration,
The first wrapping paper and the second wrapping paper can be peeled off in a good state without being adhered to each other more firmly than necessary. [Detailed Description of the Invention]

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described by taking an emergency bandage applied to an affected area of a user as an example. In addition, in this specification, for convenience of description, the invention has a name of “adhesive plaster”, but the present invention can be applied to variously packaged medical patch materials which are individually packaged.

FIG. 1 is a plan view showing an emergency bandage 10 according to an embodiment of the present invention. FIG. 2 is a sectional view taken along line II of FIG. The first-aid bandage 10 according to the present embodiment includes a first wrapping paper 14 on the back side and a second wrapping paper 12 (12 on the front side).
a, 12b); and the plaster main body 13. The bandage main body 13 includes an absorber 16 that comes into contact with the affected area,
A tape substrate 20 adhered to the back side of the absorber 16;
An adhesive layer 22 formed on the surface of the tape substrate 20 and in contact with the user's skin, and a release paper 18 for protecting the adhesive layer 22.
It has and. The release paper 18 is composed of a first release paper 18a and a second release paper 18b.

The first wrapping paper 14 is fixed to the surface of the tape base material 20 opposite to the adhesive layer 22. Also, the second
The wrapping paper 12 is adhered to the release paper 18 (18a, 18b). The second wrapping paper 12 is composed of a first wrapping paper 12a fixed to the first release paper 18a and a second wrapping paper 12a fixed to the second release paper 18b. The inside (the absorber 16 side) ends of the first wrapping paper 12a and the second wrapping paper 12b overlap each other outside the absorber 16. In addition, the inside of the second wrapping paper 12b (the overlapping portion side)
Is folded back to the outside (the side of the first wrapping paper 12a).

The first wrapping paper 14 has a total light transmittance of 20% (JIS K) so that the plaster can be confirmed from the outside.
It is preferable to use a material having high transparency of 7105) or higher. For example, a film such as polyethylene, polypropylene, polyester, nylon, polyethylene terephthalate, or OPP (biaxially oriented polypropylene), or a composite film laminated with paper or nonwoven fabric can be used. By making the wrapping paper 14 transparent, it becomes possible to accurately attach the bandage to the affected area while confirming the position of the bandage.

As the second wrapping paper 12 (12a, 12b), in addition to the same film resin as the first wrapping paper 14,
Paper, non-woven fabric made of natural fibers such as pulp, cellulose, waste paper and hemp, or a composite thereof can be used.

A rubber resin layer 30 is formed on the surface of the first wrapping paper 12a on the absorber 16 side. Further, in the second wrapping paper 12b, the rubber resin layer 28 is provided on the surface that contacts the second release paper 18b and the surface that contacts the first wrapping paper 12a.
Are formed. Then, by applying a pressure of 1 N / cm ² or more to the first wrapping paper 14 and the second wrapping paper 12, the rubber resin layer (28, 3) applied to the surface is applied.
0) closely adheres to seal the package.

The rubber resin layer 30 of the first wrapping paper 12a and the second
With the rubber resin layer 28 of the wrapping paper 12b, the length L1 = 3 mm
It is preferable that they overlap in the range of 10 mm. In addition, the shorter one in the longitudinal direction from the overlapping portion (the absorber 16
2 mm to 20 mm for the length L2 to the end on the opposite side)
It is preferable that In addition, the first wrapping paper 12a and the second
The overlapping portion with the wrapping paper 12b is outside the overlapping portion with the first release paper 18a and the second release paper 18b.

The end of the second release paper 18b on the absorber 16 side (the end on the side of the overlap with the first release paper 18a) is folded to the upper side (second wrapping paper 12). With such a configuration, the second release paper 18b can be easily grasped and the operability is improved. Further, at least the rigidity of the second release paper 18b is determined by the tape base material 20 and the first wrapping paper 14
Make it higher.

The folding width L4 of the second release paper 18b is 3
mm to 20 mm. In addition, the first release paper 18a and the second release paper 18a
The width L3 of the overlapping portion with the release paper 18b is, for example, 1 m.
It is about 10 mm.

The tape base material 20 can be formed by a resin film, a non-woven fabric or a cloth, or a net. Examples of the resin include vinyl chloride, polyacrylic acid such as PMMA (polymethylmethacrylate), polymethacrylic acid derivative, polyester, polyurethane, polyolefin resin, or synthetic fiber, cotton, rayon, acetate, etc. Can be used. When the tape substrate 20 is composed of a single film, the thickness is preferably 25 μm to 100 μm in order to prevent wrinkles during handling and to maintain flexibility. When the tape substrate 20 has a non-woven fabric or a composite structure of a net and a film, the resin has a thickness of 3 μm to 6 μm.
It is preferably 0 μm. Also, the tape base material 20
If is composed of a non-woven fabric alone, its thickness is 5 μm
It is preferable to be set to -100 μm.

As the tape adhesive layer 22, for example, an acrylic adhesive, a rubber adhesive, a cellulose adhesive,
Polyamino acid gels such as gelatin, polyglutamic acid, and polylysine can be used in addition to the PVA (polyvinyl alcohol) adhesive. The adhesive strength when it is peeled off immediately after being attached to the user's skin is, for example, 0.5 to 15
N / 15 mm. Preferably 2 to 10 N / 15 m
m. In addition, the measurement of the adhesive force described above and below,
It is based on "JIS Z0237 180 degree peeling method".

The absorber 16 is the tape adhesive layer 2 described above.
It is fixed to the tape base material 20 by 2. Absorber 1
As the body fluid absorption site of 6 (near the center), pulp, cotton,
A laminate of hydrophilic fibers such as rayon or acetate, or an absorbent acrylic resin, PNVA, PVA, or a copolymer thereof, gelatin, cellulose, starch,
Films, foams and fibers formed of polyamino acid resins such as chitin, chitosan, CMC, CMCNa, polyalginic acid and polyglutamic acid, and polylysine can be used. In addition, in order to prevent the body fluid leached in the affected area and the absorber 16 from sticking to each other, the surface of the absorber 16 may be covered with a net made of a polyolefin resin.

As the release paper 18 (18a, 18b),
It is possible to use a polyolefin film, PVA, or a polyolefin resin laminated paper which has been subjected to a release treatment by applying a curable silicone. The first release paper 18a is attached to the first wrapping paper 12a with the adhesive 26
Alternatively, it can be fixed by heat sealing. Similarly, the second release paper 18b can be fixed to the second wrapping paper 12b by the adhesive 24 or heat sealing.

The hardness of the release paper 18 (18a, 18b) is preferably 10 mm to 150 mm by the cantilever method based on JIS L1018, and the rigidity is higher than that of the tape base material 20. Tape adhesive layer 22 and release paper 18
The peel strength (adhesive strength) from (18a, 18b) is, for example, 0.01 N / 15 mm to 0.5 N / 15 mm. Preferably, 0.03 N / 15 mm to 0.2 N / 1
5 mm.

FIG. 3 shows the state of the adhesive bandage according to the embodiment when it is opened. In this embodiment, one hand holds the end of the second wrapping paper 12b located outside the absorber 16, and the other hand pulls up the end of the first wrapping paper 12a to remove it. At this time, as shown in FIG. 3, the first release paper 18a fixed to the first wrapping paper 12a is also peeled off. Next, after completely peeling off the first wrapping paper 12a and the first release paper 18a, the absorber 16 is brought into contact with the affected part of the user. After that, the second release paper 18b is peeled off, and the first wrapping paper 14 is peeled off.

Here, since the rigidity of the second release paper 18b is higher than that of the tape base material 20, the first release paper 18a is peeled from the adhesive layer 22 on the tape base material 20 to adhere the adhesive layer 22 to the skin. At this time, even if the tape base material 20 is largely curved, the second release paper 18b maintains its original posture (horizontal) without being significantly curved. Therefore, the second release paper 18b can be easily grasped.

In this embodiment, the ends of the first wrapping paper 12a and the second wrapping paper 12b overlap each other outside the absorber 16, so that the first wrapping paper 12a can be removed by one operation. The entire body 16 is generally exposed.
As a result, when the adhesive plaster (absorbent body 16) is applied to the affected part of the user in the next step, there is no risk of the end of the wrapping paper 12b coming into contact with the affected part. Further, it is possible to minimize the level difference that tends to occur in the vicinity of the absorber 16 having a large thickness, and it is possible to prevent invasion of germs into the gap between the wrapping paper 12 and the absorber 16.

4 to 6 are sectional views showing the structure of a plaster according to another embodiment of the present invention. In each drawing, the same or corresponding constituent elements as those of the above-described embodiment are designated by the same reference numerals, and the duplicated description will be omitted. In the adhesive plaster shown in FIG. 4, not only the overlapping portion of the first wrapping paper 12a and the second wrapping paper 12b, but also the overlapping portion 40 of the first release paper 18a and the second release paper 18b and the outside of the absorber 16 It is configured to be. As a result, when the first release paper 18a is peeled off from the adhesive layer 22 together with the first wrapping paper 12a, no release paper remains on the absorbent body 16, and the absorbent body 16 does not remain.
Is completely exposed. Therefore, even if the adhesive bandage is applied to the affected area before the second release paper 18b is completely peeled off, foreign matter other than the absorber 16 does not touch the affected area (wound).

In the example shown in FIG. 5, the second wrapping paper 12
The overlapping width L5 of the folded back portion of b is set to 10 mm or more. On the inner surface of the first wrapping paper 12a, in the range of 2 mm to 20 mm from the end (right end in the figure) on the side opposite to the absorber 16,
A non-coated region 30a of rubber resin is formed. As a result, the first wrapping paper 12a and the second wrapping paper 12b are firmly bonded to each other more than necessary, and it is possible to prevent a malfunction that both wrapping papers 12a and 12b are peeled off together. The rubber resin layer 30 of the first wrapping paper 12a and the second wrapping paper 1
The width L1 of the overlapping portion of 2b with the rubber resin layer 28 is set in the range of 3 mm to 10 mm, as in the above-described embodiment.

In the example shown in FIG. 6, the tape base material 20
The support film 50 is disposed between the first wrapping paper 14 and the first wrapping paper 14. This example is suitable when the tape base material 20 is thinned mainly for the purpose of improving moisture permeability and stretchability. The thickness of the tape base material 20 is, for example, 5 μm or more.
The thickness is 60 μm. The support film 50 is the tape base material 20.
It has a higher hardness than that of, and can be molded with, for example, a polyolefin-based or polyester-based resin. The support film 50 and the tape base material 20 can be fixed by heat of low temperature and intermolecular interaction.
The adhesive force between the tape base material 20 and the support film 50 at that time is preferably smaller than the adhesive force between the skin and the tape adhesive layer 22. If the adhesive force between the tape base material 20 and the support film 50 is larger than the adhesive force between the skin and the tape adhesive layer 22, the tape base material 20 is peeled off when the support film 50 is peeled off.
Is likely to peel off from the skin. Moreover, when fixing the support film 50 and the tape base material 20, it is preferable that the both ends in the longitudinal direction of the range of 2 mm to 15 mm are not fixed.

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and the design can be changed appropriately within the scope of the technical idea shown in the claims. Needless to say.

[0034]

As described above, according to the bandage according to claim 1, since the end portions of the first wrapping paper and the second wrapping paper on the absorber side are overlapped with each other on the outside of the absorber, the operation is performed. Improves the property and at the same time exerts an excellent effect on hygiene. That is, it is possible to minimize the step difference that tends to occur near the thick absorber. As a result, it is possible to prevent invasion of various bacteria into the gap, which is advantageous in hygiene. In use, one hand holds the second wrapping paper located outside the absorber, and the other hand pulls up and peels off the end of the first wrapping paper. At this time, since the ends of the first wrapping paper and the second wrapping paper overlap each other on the outside of the absorber, the absorber is completely exposed by the one operation. As a result, there is no risk of the edges of the wrapping paper coming into contact with the affected area when the adhesive bandage (absorbent body) is applied to the affected area in the next step.

According to the second aspect of the present invention, since the rigidity of the second release paper is higher than that of the tape base material and the first wrapping paper, the first release paper is peeled off from the adhesive layer on the tape base material. Even if the tape base material is largely curved, the second release paper tends to maintain its original posture without being significantly curved. As a result, the gap between the second release paper and the tape base material is widened, the second release paper can be easily grasped, and the operability is improved.

According to the third aspect of the present invention, since the overlapping portion of the first release paper and the second release paper is also arranged outside the absorber, the first release paper and the first wrapping paper are provided together. When peeled off from the adhesive layer, not only the wrapping paper but also the release paper are removed from the absorber, and the absorber is completely exposed. As a result, even when the adhesive bandage is applied to the affected area with the second release paper attached, the release paper does not touch the affected area.

In the invention according to claim 4, since the end of the second release paper on the overlapping portion side with the first release paper is bent toward the second wrapping paper, the second release paper is formed. Can be grasped more easily, and operability is improved.

In the fifth aspect of the invention, the first wrapping paper is formed of a material having a transparency so that the inside of the bandage can be seen. For example, as described in claim 6, molding is performed using a material having a total light transmittance of 20% (JIS K7105) or more. With this, when the adhesive plaster (the tape base material and the absorbent body) is brought into contact with the affected area of the user, the position of the adhesive plaster can be visually confirmed and can be accurately adhered to the affected area.

In the invention according to claim 7 of the present application, the first wrapping paper and the second wrapping paper are 3 mm to 1 mm.
Overlapping in the range of 0 mm. With this configuration,
The first wrapping paper and the second wrapping paper can be peeled off in a good state without being adhered to each other more firmly than necessary.

[Brief description of drawings]

FIG. 1 is a plan view showing an emergency bandage according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II of FIG.

FIG. 3 is a side view showing a usage state of the bandage main body according to the embodiment.

FIG. 4 is a cross-sectional view showing the structure of a bandage according to another embodiment of the present invention.

FIG. 5 is a cross-sectional view showing the structure of a bandage according to another embodiment of the present invention.

FIG. 6 is a cross-sectional view showing the structure of a bandage according to still another embodiment of the present invention.

[Explanation of symbols] 10 First aid bandages 12 Second wrapping paper 12a First wrapping paper 12b Second wrapping paper 13 Bandage main body 14 First wrapping paper 16 absorber 18 Release paper 18a First release paper 18b Second release paper 20 Tape base material 22 Adhesive layer

Claims (7)

[Claims] 1. An absorber that contacts an affected area of a user; a tape base material adhered to the absorber; a pressure-sensitive adhesive layer provided on the surface of the tape base material and in contact with the skin of the user; A release paper disposed on the surface of the pressure-sensitive adhesive layer and the absorber and peeled off at the time of use; a first wrapping paper fixed to a surface of the tape base material opposite to the pressure-sensitive adhesive layer; A second wrapping paper bonded to a pattern paper, wherein the release paper includes at least a first release paper and a second release paper in which inner end portions overlap each other, and the second wrapping paper is the first First fixed on release paper
An adhesive plaster comprising a wrapping paper and a second wrapping paper fixed to the second release paper, wherein inner ends of the first wrapping paper and the second wrapping paper overlap each other outside the absorber. . 2. The adhesive plaster according to claim 1, wherein at least the second release paper has higher rigidity than the tape base material and the first wrapping paper. 3. The adhesive bandage according to claim 1, wherein the inner ends of the first release paper and the second release paper overlap each other outside the absorbent body. 4. The end of the second release paper on the side of the overlapping portion with the first release paper is bent toward the second wrapping paper side. The adhesive bandage according to 3. 5. The adhesive plaster according to claim 1, 2, 3 or 4, wherein the first wrapping paper is formed of a material having transparency so that the inside of the adhesive plaster can be seen. 6. The total light transmittance of the first wrapping paper is 20%.
The plaster according to claim 5, which is formed of a material of (JIS K7105) or higher. 7. The first wrapping paper and the second wrapping paper are 3
The adhesive bandage according to claim 1, 2, 3, 4, 5 or 6, wherein the plasters are overlapped in a range of 10 mm to 10 mm.