JP4594677B2 - Adhesive film dressing - Google Patents

Description

  This invention is applied to cover wounds such as burns, cuts, lacerations, suture wounds, and other inflamed areas, and pads covering the wound parts, and protects from wetness etc. It relates to film dressing.

  Conventionally, when covering wounds including burns, cuts, lacerations, suture wounds, and other inflamed areas of the body, in order to prevent water wetting during showering and bathing, it has adhesiveness and oxygen and water vapor. On the other hand, dressings and bandages made of a breathable film having high permeability are used. On the other hand, a water vapor impermeable tape or the like that prevents the water vapor from spreading from the skin is widely used. These bandages and the like must completely follow the shape of the body part, and are attached directly to the skin, so they are often very thin films or foils. However, the application of such a thin film or foil-like adhesive bandage has become very difficult as the surface area of the affected area to be applied increases as it becomes thinner. For example, when these bandages were applied to an affected area having a large surface area, wrinkles or curls often caused adhesives to stick to each other.

  Therefore, in order to solve such a problem, a fixed-size product (cut product) adhesive plaster in which a carrier tape of a highly rigid support is attached to an adhesive film is known. However, all of these bandages have been improved for fixed-size products or fixed-size products that are fixed in size, and are available in various dimensional sizes due to differences in the size of the affected area. There was a problem such as having to.

On the other hand, as disclosed in Patent Documents 1 and 2, a film-like medical pressure-sensitive adhesive tape or bandage formed in a roll shape is known. The adhesive bandages and the like of Patent Documents 1 and 2 can be used by cutting freely to a desired size on the spot for any size wound part.
JP 2003-235890 A JP 2000-254164 A

  The film-like adhesive bandage disclosed in Patent Documents 1 and 2 of the above prior art is attached to the wound part because the release paper and the support are wound together with the base material in the form of a roll. After that, in order to peel the support from the base material, it is necessary to peel the support with a nail or the like from the attached film surface. Moreover, it is troublesome to peel off a support that is firmly adhered, and there is a possibility that the film is accidentally damaged when turning.

  In Patent Document 2, a peeling piece film for peeling is provided at the center of the surface of the support. In this case, the support is divided into two parts, and the support must be peeled twice by the peeling piece. In other words, the number of steps and the cost increase due to the provision of the release piece film on the support. Furthermore, in the case of this structure, the roll may be deformed when wound into a roll, and the roll may not be formed cleanly.

  The present invention has been made in view of the above-described conventional technology, and can cope with a wound portion of any size with an appropriate size, and a support can be easily made from a thin film substrate. An object of the present invention is to provide a pressure-sensitive adhesive film dressing that can be peeled off and can easily and reliably cover wounds without wrinkles.

The present invention comprises a relatively rigid support, a waterproof base material having a waterproof adhesive provided on one surface, and a release paper attached to the side on which the adhesive is provided. A pressure-sensitive adhesive film dressing that is laminated and wound in a roll shape, wherein the support is formed of a single plastic film and is formed in a wider state than the base material, and the release paper has the same width as the base material. The release paper, the base material, and the support are laminated with no gap between each other in a state of being formed, laminated and wound into a roll, and at least one side edge in the width direction of the base material In this adhesive film dressing, only the side edge portion of the body extends in the width direction from the side edge portion of the base material, and a turning margin by the extended portion is formed on the side edge portion of the support. In particular, the side edge of the support extends only from one side edge of the substrate .

  According to the pressure-sensitive adhesive film dressing of the present invention, it is possible to cope with any size wound portion by cutting it out from the roll to an appropriate size. In addition, the support can be easily peeled off from the film substrate, and the wound part can be easily covered without wrinkles and the like, so that wetting can be reliably prevented. Moreover, it can wind up neatly when it winds in a roll shape in a manufacturing process, there is no shape loss of a roll, and it can wind up stably.

  Hereinafter, one embodiment of the pressure-sensitive adhesive film dressing of the present invention will be described with reference to FIGS. The pressure-sensitive adhesive film dressing 2 of this embodiment is used to protect the skin from wetness and invasion of bacteria by sticking it so as to cover the wound part or to cover the sterilization pads covering the wound part.

  As shown in the cross-sectional view of FIG. 2, the adhesive film dressing 2 of this embodiment includes a base material 8 coated with a support 4 and an adhesive 6, and release papers 10 a and 10 b attached to the surface of the adhesive 6. It is comprised by. Of the three layers, only the support 4 is formed wider in the width direction than the other two layers, and a turning margin 16 is formed on one side in the width direction. Further, the release papers 10a and 10b are provided with slit portions 18 having side edges attached to each other in the vicinity of the center in the longitudinal direction and the width direction.

  As shown in FIG. 1, the adhesive film dressing 2 is formed by winding a long adhesive film dressing 2 around a roll core 14 formed of paper or the like and provided with a through hole 12.

  Next, the material of each layer which forms the adhesive film dressing 2 of this embodiment is demonstrated. First, the base material 8 is made of, for example, a translucent thin flexible polyurethane film having a thickness of 10 μm to 120 μm, and an acrylic pressure-sensitive adhesive 6 is applied partially or uniformly on one surface. This polyurethane film is preferable because of good air permeability and the like. In addition, polyolefin, polyvinyl chloride, polyamide, ethylene vinyl acetate copolymer, polyester, polyvinyl alcohol, polyvinylidene chloride, and the like can be appropriately selected.

  The plastic film constituting the support 4 is formed of a material such as polyolefin, polyamide, polyvinyl chloride, or polyester, and is formed of a known relatively transparent or translucent thermoplastic resin having a thickness of 20 μm to 120 μm. ing. The support body 4 is thermocompression-bonded to one side (back surface) of the base material 8 so as to be removable again with the edges aligned in either of the width directions. The peeling force of the thermocompression bonding portion between the support 4 and the base material 8 is larger than the peeling strength between the release papers 10 a and 10 b and the adhesive 6.

  As the pressure-sensitive adhesive 6, a pressure-sensitive adhesive with less fog and irritation is appropriately selected for medical use. As such an adhesive 6, for example, a material mainly composed of natural rubber, water-based polymer emulsion, thermoplastic rubber, polyurethane, polyacrylic ester copolymer or the like can be used as appropriate. As the solvent, both aqueous and solvent-based solvents can be used, but those that are resistant to wetting are preferred. Furthermore, the adhesive strength of the adhesive 6 is preferably 100 gf / 50 mm to 5000 gf / 50 mm with respect to the adherend (particularly the human body or animal skin). This is because the adhesive strength is too weak at less than 100 gf / 50 mm and may easily peel off due to sweating or movement of the skin. If it exceeds 5000 gf / 50 mm, the adhesive strength is too strong, This is because there is a risk of damaging the skin during peeling at the time of replacement.

  The release papers 10a and 10b are usually used as release papers for medical bandages, and are formed of kraft paper that has been treated with silicone. In addition, for example, glassine paper, kraft paper laminated with silicone-treated polyethylene, silicone-treated polyethylene terephthalate (PET) film, and the like are used as appropriate.

  Further, the peeling force from the adhesive 6 layer of the release papers 10a and 10b is preferably about 2 gf / 50 mm to 50 g / 50 mm, more preferably about 4 gf / 50 mm to 30 g / 50 mm. The reason for this is that if it can be peeled off with a light force of less than 2 gf / 50 mm, the release paper 10a, 10b may be easily peeled off by impact or movement during storage or transportation, and the adhesive layer may be exposed. In addition, a heavy peeling force exceeding 50 gf / 50 mm is not preferable because it takes time to peel off the pressure-sensitive adhesive layer in use.

  The support 4 is preferably made of a material that can be heat-sealed to such an extent that it can be re-peeled with the foil or film constituting the substrate 8, and can be appropriately selected in consideration of the combination with the substrate 8. For example, when a polyurethane film is used as the substrate 8, a polyester film suitable as the support 4 of the urethane substrate 8 in consideration of the thermocompression bonding with the substrate 8 and the hardness and elongation of the film of the support 4. Or, a polyolefin film or paper is mainly used.

  Furthermore, the peel strength between the support 4 and the substrate 8 is 5 gf / 50 mm to 70 gf / 50 mm, and the peel strength between the release papers 10 a and 10 b and the adhesive 6 is 2 gf / 50 mm to 50 gf / 50 mm as described above. Are preferably designed respectively. These values are preferably not more than ½ of the peel strength between the adherend such as the human body and the pressure-sensitive adhesive 6 even when the maximum value is 100 gf / 50 mm to 5000 gf / 50 mm. This is to prevent the substrate 8 from being peeled off from the adherend when the support 4 is peeled off, for example, even in perspiration. The reason why the peel strength between the support 4 and the base material 8 is larger than the peel strength between the release papers 10a and 10b and the pressure-sensitive adhesive 6 is that when the release papers 10a and 10b are peeled from the base material 8 to the support 4 Is to prevent peeling off first.

  Next, the usage method of the adhesive film dressing 2 of this embodiment is demonstrated. When sticking to cover the pads covering the wound part, first, the adhesive film dressing 2 wound in a roll is made larger than the pads covering the wound part or the wound part. Cut with scissors. Then, one of the release papers 10a and 10b divided and peeled by the slit portion 18 is peeled off. For example, the release paper 10a is peeled off, and the adhesive film dressing 2 is attached to the skin so as to cover the pads of the wound part. Next, the remaining release paper 10b is peeled off, and the adhesive film dressing 2 is adhered to the pad and the surrounding skin. Finally, the support 4 is turned away from the base material 8 from the turning margin 16 of the support 4, and the adhesion of the adhesive film dressing 2 is completed.

  According to the adhesive film dressing 2 of this embodiment, it is possible to cope with a wound portion of any size with one type of roll-shaped adhesive film dressing 2. Moreover, since it can cut | disconnect freely to a desired magnitude | size, it is economical. Furthermore, since the support 4 can be easily peeled off from the base material 8 by the turning margin 16 after sticking, and the support is not divided, it can be peeled cleanly at one time and does not take time.

  In addition, the turning margin of a support body should just be formed in at least one side edge part, and may exist in both side edge parts. Furthermore, the support may be transparent or opaque, and may or may not be colored, but it is transparent or colored and transparent in the case of being applied while looking at the affected area such as a wound. It is preferably an adhesive tape. In addition, grid-like grids or patterns may be printed. In addition, as long as the core material of the roll core does not break the roll shape, the material can be appropriately selected.

It is a schematic perspective view which shows the adhesive film dressing turned into the roll shape of one Embodiment of this invention. It is a longitudinal cross-sectional view of the width direction which shows the structure of the adhesive film dressing of this embodiment.

2 Adhesive film dressing 4 Support 8 Substrate 10a, 10b Release paper 14 Roll core 16 Turning allowance

Claims (2)

A relatively rigid support, a flexible base material that is waterproof and provided with an adhesive on one surface, and a release paper that is attached to the side on which the adhesive is provided are laminated. A pressure-sensitive adhesive film dressing wound in a roll shape, wherein the support is made of a single plastic film and is wider than the base material, and the release paper is formed to have a width equal to that of the base material. The release paper, the base material, and the support are laminated without gaps in a state of being wound in a roll shape, and at least one side edge in the width direction of the base material is a side edge of the support The adhesive film dressing characterized in that only the portion extends in the width direction from the side edge portion of the base material, and a turning margin by the extended portion is formed on the side edge portion of the support. The pressure-sensitive adhesive film dressing according to claim 1, wherein a side edge of the support extends from only one side edge of the base material .

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