JP3199420U - Dressing material - Google Patents

Abstract

[Problem] To provide a dressing material that is easy to peel off a carrier film and has excellent handleability when applied to skin. A dressing material 10 in which a release paper 13 is laminated on one side of a film base 11 adapted to the skin via an adhesive layer 12 and a carrier film 14 is laminated on the other side so as to be peelable from the film base 11. In addition, the carrier film 14 is provided with slits 15 for dividing the carrier film 14, and between the adhesive layer 12 and the release paper 13, to protect the affected part at a position corresponding to the slits 15. The pad 19 is arranged, and the release paper 13 is composed of two release papers 13 divided in the same direction as the carrier film 14 at a position corresponding to the pad 19. [Selection] Figure 1

Description

  The present invention relates to a dressing material applied to a wound part or the like.

A dressing material (a dressing product) may be attached to an affected part such as a wound part of the body for the purpose of protecting the affected part from hot water during bathing or housework, for example. The dressing material is generally configured to include a base material, an adhesive layer formed on one side of the base material, and a release paper that covers the adhesive layer.
A thin polyurethane film or the like is used for the base material of such a dressing material because it is flexible and adapts well to the skin after application and hardly causes discomfort.

However, since such a flexible and thin base material has insufficient rigidity, when the release paper is peeled off from the surface (adhesive surface) of the adhesive layer, the adhesive surfaces are easily bonded to each other. It is inferior to the handleability. Therefore, it has been proposed to laminate a rigid carrier film in a peelable manner on the surface of the base material where the adhesive layer is not formed.
When the dressing material provided with the carrier film is applied to the skin in this manner, the carrier film is released from the substrate after the release paper is peeled off and the exposed adhesive surface is attached to the skin. When pasted in such a procedure, since the carrier film is still laminated to the dressing material when stuck to the skin, the rigidity of the dressing material is maintained by the carrier film, and adhesion between the adhesive surfaces hardly occurs, Excellent handling when sticking.

  However, when the carrier film is peeled from the substrate, the entire dressing material may be peeled off from the skin in an attempt to peel only the carrier film. In order to avoid such a problem, it has been proposed that a part of the carrier film is extended outward to form a tab and the carrier film is easily peeled off starting from this tab. Even in the case of materials, it has been difficult to sufficiently avoid the above-described problems. Further, when the tabs are formed in this way, when trying to individually wrap the dressing materials one by one, it is necessary to enlarge the packaging bag by the amount of the tabs, which causes problems in terms of manufacturing and cost.

Then, the dressing material of the form which formed the groove-shaped removal part along the length direction in the center of the width direction of a carrier film, and divided the carrier film into 2 pieces by this removal part is proposed (patent document 1). reference.).
According to such a dressing material, the two pieces of carrier film can be easily peeled from the central removal portion toward the outside, starting from the removal portion. Therefore, it is possible to prevent the entire dressing material from being peeled from the skin in an attempt to peel only the carrier film. Moreover, since the tab is unnecessary, it is not necessary to enlarge the packaging bag when individually packaging.

JP 2009-142328 A

  However, when the removal part was formed in the carrier film, a new problem occurred. That is, when the dressing material is applied to the skin, when the release paper is peeled off from the dressing material, the portion corresponding to the removed portion of the dressing material from which the release paper has been peeled is attached to a flexible, thin and non-rigid base material. The adhesive layer is only present, and there is a problem that wrinkles are formed on the portion, and the dressing material is easily broken from the portion, and the handleability at the time of application is lowered.

  This invention is made | formed in view of the said situation, and makes it a subject to provide the dressing material which is easy to peel a carrier film and is excellent also in the handleability at the time of sticking to skin.

  The dressing material of the present invention is a dressing material in which a release paper is laminated on one side of a film base that conforms to the skin through an adhesive layer, and a carrier film is laminated on the other side so as to be peelable from the film base. The carrier film is formed with a dividing portion for dividing the carrier film, and a pad is disposed between the adhesive layer and the release paper.

  According to the dressing material of the present invention, the carrier film can be easily peeled off, and the handleability when applied to the skin is excellent.

It is a perspective view which shows an example of the dressing material of this invention. It is sectional drawing which follows the A-A 'line | wire of the dressing material of FIG. It is sectional drawing explaining the manufacturing method of the dressing material of FIG. It is a perspective view which shows another example about the dressing material of this invention.

Hereinafter, the present invention will be described in detail.
FIG. 1 is a perspective view showing a state in which a belt-shaped dressing material according to an embodiment of the present invention is wound up in a roll shape, and FIG. 2 is a line AA ′ (width direction) of the dressing material in FIG. It is sectional drawing which follows.
The dressing material 10 of this example is a so-called adhesive bandage that is affixed to the skin for the purpose of protecting the affected part from hot water during bathing or housework, and is used by cutting with a cutting tool such as scissors. The dressing material 10 of this example has a film base material 11 that adapts to the skin, an adhesive layer 12 is formed on one side thereof, and a release paper 13 is further laminated. On the other hand, a carrier film 14 is laminated on the other surface side of the film substrate 11 so as to be peelable from the film substrate 11. In FIG. 1, reference numeral 20 denotes a paper roll core.

The film base 11 is made of a material and thickness that adapts to the skin when applied to the skin. In this example, a polyurethane film having a thickness of 10 to 120 μm is used because it has excellent flexibility and elongation, adapts well to the skin, and has moisture permeability to prevent the affected area from being stuffy.
Other materials suitable for the film substrate include polyolefin, polyvinyl chloride, polyamide, ethylene vinyl acetate copolymer, polyester, polyvinyl alcohol, polyvinylidene chloride, and the like. It is about 10-30 micrometers.

The pressure-sensitive adhesive layer 12 formed on the one surface side of the film substrate 11 has a low irritation to the skin and is preferably formed of a pressure-sensitive adhesive having high water resistance.
As the pressure-sensitive adhesive, for example, an adhesive mainly composed of acrylic resin, natural rubber, water-based polymer emulsion, thermoplastic rubber, polyurethane, polyacrylic ester copolymer and the like can be used. The material and thickness of the adhesive layer 12 are adjusted so as not to be easily peeled off due to skin perspiration or movement, and to have an adhesive force that does not damage the skin when peeling from the skin. For example, as a preferable specific example, an adhesive layer having a thickness of 10 to 40 μm formed of an acrylic resin such as an acrylic acid copolymer may be used.

As the release paper 13, for example, craft paper treated with silicone, glassine paper, kraft paper laminated with polyethylene treated with silicone, polyethylene terephthalate (PET) film treated with silicone, etc., which can be used for medical purposes are appropriately used. Can be adopted.
The release paper 13 in this example is composed of two strip-like release papers, that is, a first release paper 13a and a second release paper 13b, which overlap at the center of the dressing material 10 in the width direction. And the side edge part of the center side of the width direction of the 1st release paper 13a is bend | folded outward along the fold line formed in the length direction, and 2nd peeling is carried out on this bent part. The side end portion on the center side of the paper 13b extends and overlaps. Thereby, each release paper 13a, 13b can be easily peeled from the respective side end portions on the center side.
The release paper may be a single sheet as long as it covers the adhesive layer 12. Moreover, even when it consists of two sheets like this example, the specific structure is not specifically limited.

On the other surface side of the film base material 11, the carrier film 14 is laminated and adhered in a peelable manner to the film base material 11 for the purpose of increasing the rigidity of the dressing material 10 as a whole and improving the handling property at the time of application. Is provided.
The carrier film 14 is peeled off from the dressing material 10 after the dressing material 10 is applied to the skin. Therefore, the peel strength between the film substrate 11 and the carrier film 14 is not peeled off due to impact or vibration during transportation before being applied to the skin, and is easy by hand from the film substrate 11 after being applied to the skin. It is adjusted so that it can be peeled off.

  The peel strength between the film substrate 11 and the carrier film 14 can be adjusted by a combination of the material of the film substrate 11 and the material of the carrier film 14. In this example, polyurethane is used for the film base 11 and polyethylene is used for the carrier film 14. Then, by co-extrusion of polyurethane and polyethylene, the film base material 11 and the carrier film 14 are pseudo-adhered to produce a laminate that is detachably laminated and adhered, and this is used for the dressing material 10. When polyurethane is used for the film substrate 11, the material of the carrier film 14 is preferably a polyester other than a polyolefin such as polyethylene.

Examples of the method for laminating the film substrate 11 and the carrier film 14 in a peelable manner include laminating, coating, vapor deposition and the like in addition to coextrusion as described above.
The thickness of the carrier film 14 is determined according to the rigidity required for the dressing material 10 and depends on the material, but for example, a range of 40 to 90 μm is suitable.
Moreover, although the carrier film 14 of this example is laminated | stacked on the film base material 11 so that the width | variety is the same as the film base material 11 as a whole, and there is no shift | offset | difference in the width direction, it is a little larger width than the film base material 11. It may be formed and extend to both sides (width direction) from the film base 11 by that amount. Each part extended in this way is used as a gripping part, and after peeling the release paper, this part is gripped so that the dressing material can be applied to the skin without touching the adhesive layer exposed by peeling the release paper. Can do.

  In the carrier film 14 of this example, a linear slit (dividing part) 15 along the length direction is formed at the center in the width direction. Thereby, the carrier film 14 is divided into two pieces (carrier films 14a and 14b) in the width direction, and the carrier films 14a and 14b can be easily separated from the slit 15 as a starting point. The slit 15 in this example is formed with a constant width and penetrates from one surface of the carrier film 14 to the other surface. The width of the slit 15 is in the range of 0.1 to 20 mm.

In this example, the display films 16a and 16b are adhered to the carrier film 14 with an adhesive (not shown). The display films 16a and 16b indicate to the user that a slit 15 is formed in the carrier film 14, and is intended to prompt the user to peel off the carrier film 14 starting from the slit 15. The display films 16a and 16b are made of two thin strips of transparent film or the like, and in this example, a plurality of arrows for clearly indicating the positions of the slits 15 are printed. And each display film 16a, 16b is each extended so that the slit 15 may not be obstruct | occluded on the one surface (surface on the side in which the film base material 11 does not exist) on the one surface of the carrier film 14 Has been.
Instead of providing the display films 16a and 16b, the carrier film 14 may be directly printed with an arrow or the like.

In this dressing material 10, between the adhesive layer 12 and the release paper 13 described above, for the purpose of protecting wounds, absorbing body fluids, maintaining a moist environment, promoting healing, reducing pain, etc. A substantially quadrangle made of pad material such as cotton, sponge, chitin, alginate, silicone rubber, or self-adhesive pad material (for example, polyurethane foam, hydrocolloid, hydrogel, hydropolymer, silicone gel, aqueous gel, etc.). A plurality of pads 19 are intermittently arranged at predetermined intervals along the length direction, and the release paper 13 is so covered as to cover the surface of the pads 19 and the adhesive surface of the portion where the pads 19 are not arranged. Are stacked.
Specifically, the width of each pad 19 is set to be larger than the width of the slit 15 and smaller than the width of the carrier film 14 so as to correspond to the slit 15 formed at the center in the width direction of the carrier film 14. Each pad 19 is also arranged at the center in the width direction. In this example, a pad 19 having a width such that both end portions of the pad 19 are located in the center in the width direction of each carrier film 14a, 14b is disposed.

Thus, by providing the pad 19 in a part of the adhesive surface corresponding to the slit 15, the handleability when the dressing material 10 is applied to the skin can be improved.
That is, if the pad 19 is not provided, if the release papers 13a and 13b are peeled from the dressing material 10 in an attempt to apply the dressing material 10 to the skin, the portion corresponding to the slit 15 is flexible and not rigid. Since only the film base material 11 and the adhesive layer 12 associated therewith exist, the film base material 11 of this part is wrinkled or bent and the adhesive surfaces are bonded to each other. Inferior to handleability. On the other hand, by providing the pad 19 corresponding to the slit 15 in this way, this portion can be supported and reinforced, and the above-described wrinkles, bends, and adhesive surfaces that are likely to occur after the release papers 13a and 13b are peeled off. It is possible to prevent the bonding between each other.

The dressing material 10 of this example can be manufactured as follows, for example.
First, as shown in FIG. 3A, a strip-shaped laminate 30 including a film base 11 and a carrier film 14 that is detachably laminated on the other surface side of the film base 11 is manufactured by coextrusion. Next, as shown in FIG. 3B, an adhesive layer forming liquid containing, for example, an adhesive and a water-based or solvent-based solvent is applied to the surface side (one surface side) of the film base 11 that is not in contact with the carrier film 14. Then, the adhesive layer 12 is formed, and a release paper 13 ′ is provided provisionally on the adhesive layer 12 so as to cover the entire adhesive surface. On the other hand, on the side of the carrier film 14 where the film substrate 11 is not provided, a strip-shaped display film forming film 16 ′, on which arrows or the like have been printed, is adhered via an adhesive (not shown), and the laminate shown Get 40. At this time, the display film forming film 16 ′ is overlaid on the carrier film 14 so that the center in the width direction of the carrier film 14 coincides with the center in the width direction of the display film forming film 16 ′.

Next, as shown in FIG. 3 (c), with respect to the laminated body 40, the depths of reaching the substantially interface between the carrier film 14 and the film substrate 11 from the display film forming film 16 ′ side are mutually A pair of parallel cutting lines L1 and L2 whose distance is in the range of 0.1 to 20 mm are formed in the center in the width direction along the length direction. And, as shown in FIG. 3 (d), a slit 15 having a width of 0.1 to 20 mm is formed in the carrier film 14 by stripping off the portion sandwiched between the pair of cutting lines L1 and L2. The display film forming film 16 ′ is divided into two pieces of display films 16a and 16b.
Next, although not shown in the figure, the provisional release paper 13 ′ is peeled off, and the pads 19 are intermittently arranged in the length direction on the exposed adhesive surface, and then the pads 19 and the pads 19 are arranged. Strip-like release papers 13a and 13b are sequentially provided so as to cover the adhesive surface of the unexposed portion.
And the dressing material 10 of the example of FIG. 1 can be manufactured by winding the release paper 13a, 13b side inside on the roll core 20.
As shown in FIG. 4, the dressing material 10 of FIG. 1 is previously cut between the pads 19 and has a single pad 19 at the center, and no pad is present at the peripheral portion. In the case of manufacturing 10 ′, after the release papers 13a and 13b are provided, the sheet is cut between the pads 19 without being wound around the roll core 20, or the punching die so that one pad 19 is located at the center. A method of punching out is preferably employed. In the case of the dressing material 10 ′ cut in advance as described above, the dressing material 10 ′ is distributed, for example, by being individually wrapped.

Such a dressing material 10, 10 'is used as follows.
First, in the case of the strip-shaped dressing material 10 wound up in a roll shape as shown in FIG. 1, it is cut off at the approximate center between the pads 19 by cutting, punching or the like. Next, among the release papers 13a and 13b, the second release paper 13b is peeled off starting from the side end extending to the center side, and about half of the adhesive surface of the adhesive layer 12 is exposed to expose the adhesive Keep the face in close contact with the skin. Next, the remaining first release paper 13a is peeled off starting from the central side edge that is bent outward, the remaining adhesive surface is exposed, the exposed adhesive surface is brought into close contact with the skin, and affixed. . In addition, after peeling off both release paper 13a, 13b, you may affix on skin.
Next, starting from the slit 15, the carrier films 14a and 14b with the display films 16a and 16b attached thereto are sequentially peeled off.
As a result, the carrier film 14 is peeled off, and the film base 11 provided with the pad 19 is in a state of being stuck to the skin via the adhesive layer 12.

Such dressing materials 10 and 10 ′ are provided with a carrier film 14 that is in close contact with and peelable from the film base material 11, so that even when the film base material 11 is thin and flexible, it is excellent in handling at the time of application. . Moreover, since the slit 15 which divides the carrier film 14 is formed in the carrier film 14, the carrier film 14 can be easily peeled off from the slit 15.
And since the pad 19 is arrange | positioned in the part corresponding to the slit 15 of an adhesive surface, even after peeling paper 13a, 13b is peeled off at the time of sticking, the film of the part corresponding to the slit 15 by the pad 19 The base material 11 and the adhesive layer 12 can be supported and reinforced. Therefore, at the time of sticking, it can prevent that the film base material 11 of the part corresponding to the slit 15 is wrinkled or bent, and the adhesive surfaces are bonded to each other, and the handling property at the time of sticking can be improved. .

In the above example, the linear slit 15 having a width of 0.1 to 20 mm formed at the center in the width direction is illustrated as a dividing portion for dividing the carrier film 14. As long as the carrier film 14 can be peeled off, a simple cut having no width may be used, and the carrier film 14 may not be linear. Moreover, the formation position is not limited to the center in the width direction as in this example, and may be a position biased to one side in the width direction.
Further, the shape and size of the pad 19 can be determined as appropriate, but if the pad is continuously provided in the length direction corresponding to the slit, the last name at the time of application is improved, but this band-shaped dressing. When the material is cut to an appropriate length and applied to the skin, hot water enters from the cut portion, resulting in poor waterproofness. Therefore, from the viewpoint of waterproofness, it is preferable that the pad 19 is arranged in a part of the length direction, that is, intermittently arranged as in the example of FIG.

10, 10 'Dressing material 11 Film base material 12 Adhesive layer 13 Release paper 14 Carrier film 15 Slit (parting part)
19 Pad

Claims (1)

A dressing material in which a release paper is laminated on one side of a film base adapted to the skin via an adhesive layer, and a carrier film is laminated on the other side so as to be peelable from the film base,
The carrier film has a dividing portion for dividing the carrier film, and a pad for protecting the affected part at a position corresponding to the dividing portion between the adhesive layer and the release paper. Has been placed,
The dressing material, wherein the release paper is composed of two release papers cut in the same direction as the carrier film at a position corresponding to the pad.

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