JP6625931B2 - Adhesive film dressing - Google Patents

Description

  The present invention relates to an adhesive film dressing excellent in sticking workability.

  BACKGROUND ART An adhesive film dressing widely used for covering wounds for protecting an affected part such as a wound part of a body generally has a configuration in which an adhesive layer and a release liner are laminated on one surface of a film substrate.

  For the film substrate of such an adhesive film dressing, it is common to use a thin film substrate from the viewpoint of eliminating discomfort at the time of application to the skin and in order to improve the followability to the wound. It is a target. However, when a thin film substrate is used, it is difficult to handle the adhesive film dressing itself. Particularly, when the release liner or the like is peeled off from the adhesive surface provided with the adhesive layer, the adhesive surface (adhesive On the surface having the agent layer), and there is a problem that the attaching operation is complicated.

  As a means for solving such a problem, there is known an adhesive film dressing in which process paper is laminated on a surface of the film substrate opposite to the surface to which the film substrate is attached (Patent Document 1). Although the overall rigidity is improved by laminating such process paper, and the handling property of the adhesive film dressing is improved, the process paper needs to be peeled off from the end after being attached to the affected part. At this time, the operator must make the peeling allowance by himself at the end of the adhesive film dressing, and the operation is complicated, and there is a problem that a load is applied to the wound.

  Adhesive film dressing in which the first adhesive layer and release paper and the second adhesive layer and release paper are sequentially laminated on one side of the film substrate, and the carrier film is laminated on the other side so that the substrate can be peeled off. It is known (Patent Document 2). In this adhesive film dressing, first, the second release paper is peeled off, the second adhesive layer is exposed, and once adhered and temporarily placed on an operator's gloves, and then taken up, the first peeling is performed. By peeling the paper, the first adhesive layer is exposed and a dressing material is attached to the affected area, but when peeling the first second release paper from the end, it is different from the expected peeling site In some cases, it was peeled off from the place and the sticking operation did not work well.

  Adhesive film having a linear fragile portion (slit) for separating the adhesive film dressing into an adhered portion and a non-applied portion, and having a linear fragile portion for releasing the release liner at a portion corresponding to the attached portion of the release liner Dressing is known (Patent Document 3). This adhesive film dressing removes the release liner from the linear vulnerable part for release liner peeling, and after attaching while holding the non-adhered part, non-adhering from the linear vulnerable part for separating into the adhered part and the non-adhered part The part is cut off and used.

  On the other hand, a protective film member having an adhesive layer on both surfaces of a film substrate and having a plurality of through holes penetrating these three layers, and a medical protective film material in which a release liner is attached to each adhesive layer is known. (Patent Document 4). In such a document, the above-mentioned through-hole is used for allowing the exudate to pass through when absorbing the exudate into the absorber, but in general, the through-hole is such that the wound is pressed by the exudate. It is possible to prevent and maintain an appropriate moist environment, and it is preferably used for the purpose of promoting healing of a wound.

  However, since the strength of the film base material itself is reduced by the plurality of through-holes, when the release liner is peeled off, since the adhesion of the adhesive layers is particularly remarkable, the sticking operation is extremely complicated, and improvement is required. Had been.

JP 08-154965 A JP 2014-104055 A JP-A-06-202 JP-A-2006-22223

  Provided is an adhesive film dressing having good sticking workability even if it has a plurality of through holes.

(1) An adhesive film dressing having an adhesive layer on one surface of a film substrate and a release liner on the adhesive layer, and a support on the other surface of the film substrate, The adhesive film dressing has a plurality of through holes that are regularly arranged and penetrate from the release liner to the support, and the release liner and the support do not overlap each other when projected on the same plane, and An adhesive film dressing having slits in a parallel positional relationship, wherein the positions of the slits of the release liner and the support and the positions of the through holes do not overlap.

  ADVANTAGE OF THE INVENTION By this invention, the adhesive film dressing which has favorable sticking workability can be obtained.

Schematic diagram when the adhesive film dressing of the present invention is viewed from the support side 1 is a schematic cross-sectional view of the pressure-sensitive adhesive film dressing of FIG. 1, taken along line AB. Schematic diagram of the arrangement pattern of through holes when viewed from the support side Slit layout when projecting the slits provided on the support and release liner on the same plane Layout diagram of different slits when projecting the slits provided on the support and release liner on the same plane Layout diagram of another slit when the slits provided on the support and the release liner are projected on the same plane

  Hereinafter, the present invention will be described in detail.

  The pressure-sensitive adhesive film dressing of the present invention has a pressure-sensitive adhesive layer on one surface of a film substrate, a release liner on the pressure-sensitive adhesive layer, and a support on the other surface of the film substrate.

  The film substrate of the pressure-sensitive adhesive film dressing of the present invention has a thickness of preferably 5 to 150 μm, and more preferably 7 to 75 μm, from the viewpoint of eliminating discomfort at the time of application to the skin, and from the viewpoint of followability to the wound. More preferably, there is. In addition, it is preferable that the film substrate has transparency, since the work can be performed while checking the attached portion. Materials constituting such a film substrate include polyurethane, polyolefin, polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, polyacrylate, polysulfone, polystyrene, polyethylene, polypropylene, polyamide, ethylene-vinyl acetate copolymer, polyester, polycarbonate, Examples include polyvinyl fluoride or other fluorine-containing polymers. Among them, polyurethane is preferable because it has particularly high flexibility and high followability to a wound in addition to the above-mentioned transparency.

  Since the pressure-sensitive adhesive layer on one surface of the film substrate is affixed to the skin, it is preferable that the skin is less irritating. Further, the pressure-sensitive adhesive layer preferably has water resistance, and further preferably has transparency from the viewpoint of ensuring the visibility of the sticking portion. As the pressure-sensitive adhesive for forming such a pressure-sensitive adhesive layer, for example, those having an acrylic resin, a natural rubber, an aqueous polymer emulsion, a thermoplastic rubber, a polyurethane, a polyacrylester copolymer, a silicone resin, or the like as a main component are used. Is done. In addition, it is preferable to adjust the adhesive so that the adhesive does not easily peel off due to sweating or movement of the skin and does not damage the skin when peeled from the skin. An example of a suitable use is an adhesive layer formed of an acrylic resin. The thickness of the pressure-sensitive adhesive layer is preferably from 10 to 60 μm.

  As the release liner disposed on the pressure-sensitive adhesive layer, kraft paper or glassine paper treated with a silicone resin or a fluorine resin, kraft paper laminated with polyethylene treated with a silicone resin, silicone resin is used. A medically usable film such as a treated plastic film (eg, a polyethylene terephthalate film or a polyethylene film) can be used as appropriate. The release liner is released when a dressing material formed of a film substrate and an adhesive layer is applied to the skin.

  In the present invention, the support that the other surface of the film substrate has supports the above-mentioned dressing material, increases the rigidity of the pressure-sensitive adhesive film dressing of the present invention, and adheres the pressure-sensitive adhesive layer at the time of application. Can be prevented. Examples of such a support include process paper, polyester nonwoven fabric, polypropylene nonwoven fabric, polypropylene film, polyethylene terephthalate film, and polyethylene film. Note that the support is peeled off from the film substrate after the dressing material is attached to a wound or the like. For this reason, it is preferable that the support is pseudo-adhered to the above-mentioned film substrate. For example, by co-extruding a polyurethane as a film substrate and a polyethylene as a support, the substrate and the support can be pseudo-bonded. When polyurethane is used for the film substrate, a polyester is preferably used as the support in addition to the polyolefin represented by polyethylene. For the pseudo adhesion between the film substrate and the support, various methods such as lamination, coating, vapor deposition and pressure bonding are used in addition to the above-mentioned coextrusion.

  The pressure-sensitive adhesive film dressing of the present invention has a plurality of through holes that are regularly arranged and penetrate from the release liner to the support, and when the release liner and the support are projected on the same plane, they overlap each other. And the slits have a parallel positional relationship, and are arranged such that the positions of the slits of the release liner and the support and the positions of the through holes do not overlap.

  FIG. 1 is a schematic view of the pressure-sensitive adhesive film dressing of the present invention when viewed from the support side. In FIG. 1, the support 3 and a release liner 6 (not shown) are projected on the same plane. FIG. 2 is a cross-sectional view of the pressure-sensitive adhesive film dressing of FIG. 1 along the line AB.

  As shown in FIG. 1, in the pressure-sensitive adhesive film dressing 1 of the present invention, a plurality of through-holes 9 are regularly arranged. The through-hole 9 penetrates from the support 3 to the release liner 6 as shown in FIG. FIG. 1 shows an example in which the through hole 9 is circular. However, in the present invention, the shape of the through hole is not limited to this, and other than the circular shape, an elliptical shape, a triangular shape, a square shape, a trapezoidal shape, a diamond shape, Various polygons such as a parallelogram and other irregular shapes can be used. The through-hole 9 preferably has the same shape and the same size from the surface on the support 3 side to the surface on the release liner 6 side, so that exudate, sweat, etc. of the wound part can be quickly discharged. It becomes possible. Further, the through-hole 9 having such a shape can be easily formed by providing the through-hole 9 after laminating all of the support 3, the film substrate 4, the adhesive layer 5, and the release liner 6. This is preferable because the manufacturing process can be simplified. In addition, as a method of forming the through hole 9, for example, a punching method using a punch blade such as a mainspring blade or a Thompson blade having a desired size and shape selected, a method using a die cut roll, laser processing or a heated metal rod is used. There is a method of forming by burning out.

FIG. 3 is a schematic diagram when the arrangement pattern of the through holes is viewed from the support side. In the present invention, the through holes 9 are regularly arranged. As a preferred arrangement pattern of the through holes 9, as shown in FIG. 3A, an arrangement pattern in which the through holes 9 are arranged at the vertices of the mesh pattern 2 having an equilateral triangle indicated by a broken line as a minimum constituent unit, or FIG. As shown in (b), an arrangement pattern in which the through-holes 9 are arranged at the apexes of the net-like pattern 2 having a square represented by a broken line as a minimum constituent unit is exemplified. If the through-holes 9 are arranged in a random pattern, the amount of exudate discharged from the wound may be partially different, which is not desirable. Further, in a portion where the through holes 9 are concentrated, it is difficult to arrange the positions of the slits of the release liner 6 and the support 3 described later so that the positions of the through holes 9 do not overlap with each other. The size of each through hole 9 is preferably ¹ to 15 mm ² from the viewpoint of discharging exudate and maintaining a proper moist environment of the wound, and also a through hole for the entire adhesive film dressing. The area ratio of 9 is preferably set to 1 to 12%.

  In the present invention, the release liner 6 and the support 3 do not overlap each other when projected on the same plane, and have slits that are in a positional relationship of parallel movement. The position of the slit and the position of the through hole do not overlap. The fact that the slits are in a parallel positional relationship means that, when the position of one slit is translated on the same plane where the release liner 6 and the support 3 are projected, the entire slit becomes the other slit. Means just overlap. FIG. 1 described above is also a schematic diagram showing this state. In FIG. 1, a plurality of through holes 9 are provided at the apexes of a net-like pattern having a square (not shown) as a minimum constituent unit, and a slit 7 of the support 3 and a not-shown (located below the support 3) The slit 8 of the release liner 6 does not overlap with the position of the above-mentioned through-hole, and the slit 8 of the release liner 6 is arranged at a position where the slit 7 of the support 3 is moved in the horizontal direction in the figure. And they do not intersect. In FIG. 1 and the drawings described later (FIG. 2, FIG. 4, FIG. 5, FIG. 6, etc.), the slit 7 of the support 3 is shown by a solid line, and the slit 8 of the release liner 6 is shown by a broken line. It is distinguished for the purpose of explanation, and the broken line does not indicate a perforation.

  Next, a method of using the adhesive film dressing of the present invention will be described with reference to FIG.

1. In FIG. 2, holding one end of the release liner 6 (for example, holding the right end of the release liner 6 in the figure), one of the release liners 6 separated by the slit (the release liner located on the left side of the figure with respect to the slit 8). 6) Peel off.
2. Next, one end on the side where the release liner 6 remains is gripped, and the exposed surface of the adhesive layer 5 is attached to the wound.
3. Next, the release liner 6 (the release liner on the right side of the slit 8 in the figure) remaining on the pressure-sensitive adhesive layer 5 is peeled off to completely cover the wound.
4. The vicinity of the slit 7 of the support 3 (for example, the vicinity of the right side of the slit 7) is gently pressed, and one end of the support 3 located on the opposite side via the slit 7 (the support 3 located on the left side of the slit 7). The support 3 is lifted upward, and one end of the support 3 is lifted and peeled off.
5. Next, the other support 3 (the support 3 located on the right side of the slit 7) is peeled off.

  By the above procedure, the dressing material having the film substrate 4 and the pressure-sensitive adhesive layer 5 is in a state of being attached to the wound. Further, as described later, an absorptive material (for example, a medical gauze or an absorbent pad) for removing exudate or the like can be fixed on the film base material 4 of the dressing material after the application.

  As described above, in the present invention, when the support 3 or the release liner 6 is to be peeled off, one of the support 3 or the release liner 6 divided into two surfaces along the slit is firstly peeled off, and then the remaining one is released. One of the supports 3 or the release paper 6 is peeled off. In this way, the slits 7 of the support 3 and the slits 8 of the release liner 6 do not overlap each other and are parallel to each other. Starting from 8, the support 3 and the release liner 6 can be easily separated.

  The slits 7 and the slits 8 are arranged so as not to overlap with the through holes 9. For example, when the slit 7 of the support 3 does not overlap with the through hole 9, the support 3 is easily peeled off. However, when the slit 7 overlaps with the through hole 9, the shape of the slit 7 and the shape of the through hole 9 are different. Since the composite peeled end is formed, when the support 3 is peeled off, it is difficult to peel it cleanly, which causes a problem. Similarly, when the slit 8 of the release liner 6 overlaps with the through-hole 9, the release liner 6 becomes a peeled end portion in which the shape of the slit 8 and the shape of the through hole 9 are combined. However, there is a problem in sticking workability.

  With respect to the slit 8 of the release liner 6 and the slit 7 of the support 3, if the distance between the projection of the release liner 6 and the support 3 on the same plane is short, dressing is performed when the release liner 6 is peeled. The material is likely to bend near one of the slits, the surface on the side having the pressure-sensitive adhesive layer 5 is easily bonded, and handling becomes difficult. For this reason, when projecting the support 3 and the release liner 6 on the same plane, the interval between the slit 8 of the release liner 6 and the slit 7 of the support 3 is preferably 2 mm or more. More preferably, it is 5 mm or more. When the slit 8 of the release liner 6 and the slit 7 of the support 3 intersect when projecting the release liner 6 and the support 3 on the same plane, they are separated by the slit 8 of the release liner 6. When one of the release liners 6 on the surface is peeled off, a bend occurs in the vicinity of the slit 7 of the support 3, and the exposed pressure-sensitive adhesive layer 5 is easily bonded to the other release liner 6 on the unpeeled part. Become.

  When the slit 8 of the release liner 6 and the slit 7 of the support 3 are not in a parallel movement positional relationship, it depends on the size of the adhesive film dressing and the distance between the slit 8 and the slit 7. It becomes difficult to bend at a location where the 7 approaches, and it is difficult to arrange the slits so that the regularly arranged through-holes 9 do not overlap the slits. The shape of the slits 8 and the slits 7 is not particularly limited, and can be freely formed, such as discontinuous slits such as broken lines and dotted lines and continuous slits without breaks. From the viewpoint of facilitation, it is preferable that the slit be a continuous slit.

  The slit 8 of the release liner 6 and the slit 7 of the support 3 may be linear, curved, bent, or the like if they are in a parallel positional relationship and do not overlap with the through-hole 9. If the release liner 6 is not linear, when one of the release liners 6 separated by the slits 8 of the release liner 6 is peeled off, a portion having low rigidity may partially occur, and the exposed pressure-sensitive adhesive layer There is a case where a problem occurs in the sticking workability, for example, because the adhesive layer 5 easily adheres to the other release liner 6 that has not been peeled. Therefore, the slit 8 of the release liner 6 and the slit 7 of the support 3 are preferably linear. It is also preferable that the entirety be linear and formed of fine wavy lines and zigzag lines.

  The number of the slits 8 of the release liner 6 and the number of the slits 7 of the support 3 are different if the support 3 and the release liner 6 are formed in different positions in a parallel movement when projected on the same plane. Can be provided without limitation. However, it can be easily imagined that the more the number of slits, the more the number of steps of the peeling operation, and the time required for the peeling operation is complicated. Also, as the number of slits increases, the rigidity of the adhesive film dressing may decrease. For this reason, the number of the slits 8 of the release liner 6 and the number of the slits 7 of the support 3 are preferably small, preferably two or less, and most preferably one each.

  Next, a specific arrangement example of the slits in the present invention will be described with reference to the drawings. FIG. 4 is a layout view of the slits provided on the support 3 and the release liner 6 when projected on the same plane. FIGS. 5 and 6 show the same slits provided on the support 3 and the release liner 6. It is an arrangement view of another slit when projecting on a plane.

  FIG. 4A is an example in which one slit 8 of the release liner 6 and one slit 7 of the support 3 are arranged so as to be a straight line parallel to one side in the longitudinal direction of the adhesive film dressing. , And the slits are in a positional relationship of being moved by 10 mm in the horizontal direction in the figure. The size of the adhesive film dressing is vertical: 5 cm × horizontal: 7 cm (all examples described later have the same size). Both ends of the slit are located on opposite sides of the rectangular adhesive film dressing.

  FIG. 4B shows that one slit 8 provided in the release liner 6 and one slit 7 provided in the support 3 are arranged one by one, and the slit 7 and the slit 8 are aligned with respect to one side in the longitudinal direction of the adhesive film dressing. This is an example in which the slits are arranged diagonally, and the slits have a positional relationship of being translated in the horizontal direction by 10 mm in the figure. Both ends of the slit are located on opposite sides of the rectangular adhesive film dressing.

  FIG. 4C shows that one slit 8 provided in the release liner 6 and one slit 7 provided in the support 3 are arranged one by one, and the slit 7 and the slit 8 are aligned with respect to one longitudinal side of the adhesive film dressing. This is an example in which the slits are arranged obliquely, and the slits are in a positional relationship of being moved by 10 mm in a diagonally upper right direction in the figure. One end of the slit and the other end are located on adjacent sides of the rectangular adhesive film dressing.

  FIG. 4D shows that one slit 8 provided in the release liner 6 and one slit 7 provided in the support 3 are respectively arranged, and the slit 7 and the slit 8 are aligned with respect to one side in the vertical direction of the adhesive film dressing. This is an example in which the slits are arranged obliquely, and the slits are in a positional relationship of being moved 55 mm parallel to the upper right in the figure. One end of the slit and the other end are located on adjacent sides of the rectangular adhesive film dressing as in FIG. 4C.

  FIG. 5E shows an example in which one curved slit is arranged as each of the slit 8 of the release liner 6 and the slit 7 of the support 3, and the slits are parallel to each other by 15 mm in the horizontal direction in the figure. It is in a moved positional relationship. Both ends of the slit are located on opposite sides of the rectangular adhesive film dressing.

  FIG. 5F is an example in which one bent linear slit is arranged as the slit 8 of the release liner 6 and the slit 7 of the support 3, and the slits are arranged in the horizontal direction in the figure. They are in a positional relationship of being translated by 10 mm. Both ends of the slit are located on opposite sides of the rectangular adhesive film dressing.

  FIG. 5G shows an example in which the slits 8 of the release liner 6 and the slits 7 of the support 3 each have a single linear and fine wavy slit. , And the slits are in a positional relationship of being moved by 10 mm in the horizontal direction in the figure. Both ends of the slit are located on opposite sides of the rectangular adhesive film dressing.

  In (h) of FIG. 6, two slits 8 of the release liner 6 and two slits 7 of the support 3 are alternately arranged so as to be a straight line parallel to one side in the longitudinal direction of the adhesive film dressing. This is an example, and the slits have a positional relationship of being moved 10 mm in the horizontal direction in the figure. Both ends of the slit are located on opposite sides of the rectangular adhesive film dressing.

  FIG. 6 (i) is an example in which two slits 8 of the release liner 6 and two slits 7 of the support 3 are alternately arranged, and the slit 7 and the slit 8 are arranged in the longitudinal direction of the adhesive film dressing. This is an example in which the slits are arranged obliquely with respect to one side of FIG. The slit 7 and the slit 8 have one end and the other end located on adjacent sides of the rectangular adhesive film dressing, and both ends located on opposite sides of the rectangular adhesive film dressing. There is a slit that is.

  In each of (a) to (d) of FIG. 4, (e) to (g) of FIG. 5 and (h) and (i) of FIG. 6, an adhesive film dressing excellent in sticking workability is obtained. However, in FIGS. 6H and 6I, since the number of the slits 7 and the number of the slits 8 are each two, the rigidity of the adhesive film dressing is slightly reduced, and the adhesive film dressing does not bend. However, sticking work must be done carefully.

  In using the adhesive film dressing of the present invention, after the dressing material is attached to the wound portion for the purpose of promptly discharging exudate, sweat, etc. from the wound portion, the Pad material such as gauze, non-woven fabric, cotton, sponge, or self-adhesive pad material (eg, polyurethane foam, hydrocolloid, hydrogel, hydropolymer, silicone gel, aqueous gel, etc.) is used as an absorbent for exudate on the surface. They can be arranged as appropriate. After the exudate, sweat, etc. are sufficiently absorbed, the above-mentioned absorbent can be replaced with the dressing as it is. Thereby, the burden on the affected part can be minimized.

  In the pressure-sensitive adhesive film dressing of the present invention, the slits of the support and the release liner, when the support and the release liner are projected on the same plane, do not overlap with each other, and are formed in a positional relationship of parallel movement. Also, since these slits do not overlap with the through-holes, the rigidity of the adhesive film dressing is sufficiently maintained, and the adhesive layer surfaces do not adhere to each other, especially when peeling off the release liner, so that the sticking workability is improved. It turns out that it is an excellent adhesive film dressing.

REFERENCE SIGNS LIST 1 adhesive film dressing 2 mesh pattern 3 support 4 film substrate 5 adhesive layer 6 release liner 7, 8 slit 9 through hole

Claims (1)

  An adhesive film dressing having an adhesive layer on one surface of a film substrate and a release liner on the adhesive layer, and having a support on the other surface of the film substrate, wherein the adhesive film dressing Has a plurality of through-holes, which are regularly arranged, penetrating from the release liner to the support, and when the release liner and the support are projected on the same plane, they do not overlap with each other, and are parallel-translated. An adhesive film dressing having slits in a positional relationship, wherein the positions of the slits of the release liner and the support do not overlap with the positions of the through holes.