JPH076889Y2 - Absorption pad with adhesive layer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an absorbent pad with an adhesive layer, which is mainly used to protect and heal a wound surface.

(Prior Art) Gauze, absorbent cotton, etc. have been conventionally used to absorb the blood, body fluid, etc. exuding from the wound, but these easily stick to the wound and are attached to the wound. Since it is troublesome to use an adhesive tape or a bandage, the applicant has proposed an absorbent pad with an adhesive layer, which has a large wound healing effect and is convenient for use (Japanese Utility Model Application No. 63-148884). issue).

This absorbent pad with an adhesive layer is provided with a wound surface covering material on one surface of an absorbent material capable of absorbing blood and body fluid, and a surface material on the other surface, thereby providing a wound surface covering material and a surface material. Both ends of the absorbent pad are joined to form an absorbent pad body in which the absorbent material is disposed between the wound surface covering material and the surface material, and an adhesive layer is formed on the peripheral edge of the wound surface covering material of the absorbent pad body. The absorbent pad body can be easily attached to the wound area by applying the adhesive layer to the skin around the wound area.

In this absorbent pad, the surface material and the wound surface covering material each have a large number of small holes dispersed therein, and the opening ratio of the small holes in the surface material is the same as the opening ratio of the small holes in the wound surface covering material. Even if a large amount of blood or body fluid is exuded from the wound, it is quickly absorbed and prevents the stuffiness of the affected area by evaporating water quickly. It is possible to prevent stains on clothes.

(Problems to be solved by the invention) However, when blood or body fluid is discharged little by little and intermittently from the wound area, the above-mentioned absorbent pad tends to be wet on the wound surface side, and there is room for improvement. there were. That is, since the opening ratio of the small holes in the surface material is set to the same level as or slightly smaller than the opening ratio of the small holes in the wound surface covering material, it is difficult for blood and body fluid to migrate to the surface side.

The present invention has been made to solve such drawbacks, and its purpose is to appropriately absorb blood, body fluid, and the like exuding from a wound and accelerate healing by drying them. In addition, it can be attached to the skin surface without using adhesive tape, etc. and has good operability, and when applied to a wound area where blood, body fluid, etc. are discharged in a relatively small amount, the wound surface side Another object of the present invention is to provide an absorbent pad with an adhesive layer, which can reduce wetting with water.

(Means for Solving the Problems) In the absorbent pad with the adhesive layer of the present invention, the wound surface covering material is provided on one surface of the absorbent material capable of absorbing liquid such as blood and body fluid, and the absorbent material is also provided. A surface material is provided on the other surface of the absorbent article, and both end portions of the wound surface covering material and the surface material are joined together to dispose the absorbent material between the wound surface covering material and the surface material to form an absorbent pad body. An absorbent pad with an adhesive layer, in which the wound surface covering material of the absorbent pad main body is provided with an adhesive layer on the groove surface, and a large number of small holes are dispersed in the surface material and the wound surface covering material, respectively. The opening ratio of the small holes in the surface material is set to be larger than the opening ratio of the small holes in the wound surface covering material, thereby achieving the above object.

Hereinafter, the present invention will be described with reference to the drawings.

As shown in FIG. 1, the absorbent material 2 is formed in a substantially plate shape having a predetermined width and a predetermined thickness. The absorbent material 2 is
It is formed of a material capable of absorbing a liquid such as blood or body fluid, and examples thereof include absorbent cotton, gauze, non-woven fabric, and synthetic resin foam made of open cells.

The wound surface covering material 3 is formed by forming a large number of small holes in a synthetic resin film such as polyolefin such as polyethylene and polypropylene, polyester, polystyrene, polyamide or the like, or a mesh fabric made of fibers such as polyester, polyamide, polyolefin and rayon. And the like.

The surface material 4 also needs to have air permeability, and is formed of the same member as the scratch surface covering material 3 described above.

The thickness of the wound surface covering material 3 and the surface material 4 is preferably 5 to 70 μm, more preferably 10 to 50 μm.

The aperture ratio of the small holes 4a in the surface material 4 is set to be larger than the aperture ratio of the small holes 3a in the scratch surface covering material 3. The aperture ratio of the small holes 4a in the surface material 4 is preferably, for example, in the range of 20 to 80%, and the aperture ratio of the small holes 3a in the wound surface covering material 3 is 10%.
~ 70% is preferred. The diameter of the small holes 3a, 4a provided in the wound surface covering material 3 and the surface material 4 is not limited, but is 0.1 m.
It is preferably about m to 2.0 mm, more preferably 0.3 mm to 1.0 mm. Small holes 3a, the number per unit area 4a is preferably about 10 to 200 pieces / cm ^2, more preferably 20 to 100 / cm ^2.

The wound surface covering material 3 is provided over the entire surface of one surface of the absorbent material 2, and the surface material 4 is provided over the entire surface of the other surface of the absorbent material 2. Both end portions of the material 4 are joined by heat sealing or an adhesive agent such as hot melt. Therefore, the absorbent material 2 is in a state of being disposed in the flat tubular body formed by the wound surface covering material 3 and the surface material 4. In addition, the four peripheral ends of the wound surface covering material 3 and the surface material 4 are joined together to form a flat bag body, and the absorbent material 2 is arranged in the bag body to form the absorbent pad body 1. Good.

As shown in FIGS. 1 and 2, adhesive layers 6 are adhered to both sides of the wound surface covering material 3 of the absorbent pad body 1. The pressure-sensitive adhesive layer 6 is formed in a strip shape and is attached along the side portion of the absorbent pad body 1. On the surface of the wound surface covering material 3 of the absorbent pad body 1, two protective papers 5 having substantially the same size are arranged with their central ends overlapped. Then, the outer ends of the respective protective papers 5, 5 are adhered to the surface of the pressure-sensitive adhesive layer 6. Note that one sheet of protective paper 5 may be attached over both pressure-sensitive adhesive layers 6, 6.

As the protective paper 5, for example, parchment paper, strained glassine, sulfuric acid paper, or the like is used. In addition, the adhesive layer 6
Any of acrylic, rubber, silicone, and the like that adheres well to the skin surface and has little irritation can be used. The adhesive layer 6 may be provided on both sides of the absorbent pad 1, or the absorbent pad body 1
It may be provided on four rounds. The pressure-sensitive adhesive layer 6 may be provided discontinuously.

The absorbent pad with the pressure-sensitive adhesive layer having the above configuration is manufactured, for example, as follows.

As shown in FIG. 3, a belt-shaped wound surface covering material 3 having a predetermined width and a surface material 4 are drawn out in a state of being arranged in parallel, and an absorbent material which is continuous between the wound surface covering material 3 and the surface material 4. Two
While inserting, the both sides of the wound surface covering material 3 and the surface material 4 are heat-bonded by the heating roll 8 to produce a long absorption pad body 1 (Fig. 4 (a)). Next, the strip-shaped pressure-sensitive adhesive layers 6 each having a release paper attached on one side are attached to both sides of the wound surface covering material 3, and then the release papers are peeled off to expose the pressure-sensitive adhesive layers 6 (Fig. 4 (b )). Next, two strip-shaped protective papers 5 and 5 are arranged on the wound surface covering material 3 side of the absorbent pad main body 1 so that the ends on the center side thereof overlap and the outer end of the protective paper 5 is placed. It is adhered to the surface of the adhesive layer 6. Next, this is cut into appropriate dimensions in the longitudinal direction to obtain an absorbent pad with an adhesive layer.

In the absorbent pad with an adhesive layer obtained in this way, it is not necessary to attach the absorbent pad to the wound area using an adhesive tape or the like as in the conventional case, and it can be attached compactly and has a large area. You don't have to fix it and you can use it comfortably. In addition, compared with the conventional gauze and the like, it is possible to absorb a large amount of blood, body fluid and the like, while the applied portion has a relatively small area. Further, by designing the adhesive layer 6 to have a large adhesive area, the absorbent pad body 1 can be reliably attached to the skin.

Further, since the opening ratio of the small holes 4a in the surface material 4 is set to be larger than the opening ratio of the small holes 3a in the wound surface covering material 3, the absorbed blood or body fluid is quickly evaporated near the surface. Therefore, when the absorbent pad is applied to the wound area where the wound surface covering material 3 is easily transferred to the surface material 4 side, and thus blood and body fluid are discharged little by little and intermittently, the wound surface side is It is easy to dry. Further, since the absorbent material near the surface is closer to the dry state, the clothes are not contaminated with blood or the like.

(Embodiment) The present invention will be specifically described below based on an embodiment.

Example <Material used> As a wound surface covering material, a polyester film (7.5 cm width) having a thickness of 35 μm and provided with 36 circular holes having a diameter of 0.8 mm / cm ² was used. The aperture ratio of this film was 18%.

As the surface material, a polyester film (7.5 cm width) having a thickness of 35 μm and provided with 80 circular holes having a diameter of 0.8 mm / cm ² was used. The aperture ratio of this film was 40%.

As a pressure-sensitive adhesive layer, an acrylic pressure-sensitive adhesive was applied to one side of release paper treated on both sides with silicon, and dried to prepare a pressure-sensitive adhesive tape having a pressure-sensitive adhesive layer having a thickness of 50 μm. The pressure-sensitive adhesive tape having this pressure-sensitive adhesive layer was wound up and then cut into 8 mm width for use.

As the protective paper, 50 g / m ² parchment paper (27.5 mm width) was used.

<Method for manufacturing absorbent pad with adhesive layer> While feeding out the two polyester films in parallel, while inserting absorbent cotton between the two films, both sides of both films are heat-bonded over a width of 2 mm. Then, a flat absorbent pad body was produced.

Next, the above-mentioned adhesive tape was attached to both sides of the polyester film (wound surface covering material) of the absorbent pad body so that the edge of the body and the edge of the adhesive tape were aligned. Next, the release paper of the adhesive tape was peeled off. Then, add the above parchment paper to 2
The parchment paper was placed on the upper surface of the polyester film, the ends of the parchment paper on the center side were overlapped with each other, and the outer end of each parchment paper was adhered to the surface of the adhesive layer.

Next, this was cut into a length of 10 cm to obtain a product. This product was put in a sterile bag and sterilized with ethylene oxide gas at 40 ° C. for 4 hours to obtain a final product.

Comparative Example Example except that a 35 μm-thick polyester film (opening ratio 18%, 7.5 cm width) provided with 36 holes / cm ² having 0.8 mm diameter was used as the wound surface coating material and surface material. An absorbent pad with an adhesive layer was produced in the same manner as in.

Next, the absorbent pad with the pressure-sensitive adhesive layer obtained in Examples and Comparative Examples was applied to a wound part where the exudate did not stop and the exudate was gradually discharged, and the absorption of the initial exudate It was similar to the absorbent pad, but 20
When the two absorbent pads are compared after a lapse of time, the absorbent pad of the comparative example is in a considerably wet state in the vicinity of its contact with the wound surface covering material, while the absorbent pad of the embodiment is in the vicinity of contact with the wound surface covering material. The wet condition was low.

(Advantage of the Invention) The absorbent pad with an adhesive layer of the present invention can accelerate the healing of a wound and is convenient to use. Furthermore, blood and body fluid easily migrate from the wound surface coating to the surface material side, and when applying an absorbent pad to the wound area where blood and body fluid etc. are discharged little by little, the wound surface side is dry. It is easy to do and the healing effect can be further enhanced.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of an absorbent pad with an adhesive layer of the present invention, and FIGS. 2 (a) and 2 (b) are perspective views from the surface material side and the wound surface covering material side of the absorbent pad. From FIG. 3, FIG. 3 is a schematic explanatory view showing the manufacturing method thereof, and FIG.
FIG. 3C is a perspective view of a main part showing a manufacturing process thereof. 1 ... Absorption pad body, 2 ... Absorber, 3 ... Wound surface covering material, 4
... surface material, 6 ... adhesive layer.

Claims (1)

[Scope of utility model registration request] 1. A wound surface covering material, wherein a wound surface covering material is provided on one surface of an absorbent material capable of absorbing liquid such as blood and body fluid, and a surface material is provided on the other surface of the absorbent material. And both end portions of the surface material are joined to each other to dispose the absorbent material between the wound surface covering material and the surface material to form an absorbent pad body. An absorbent pad with an adhesive layer provided with an adhesive layer, wherein the surface material and the wound surface covering material each have a large number of small holes dispersed therein, and the opening ratio of the small holes in the surface material is the wound surface. An absorbent pad with a pressure-sensitive adhesive layer, which is set to be larger than the opening ratio of the small holes in the covering material.