JPH0454961A - Highly liquid absorbable adhesive band - Google Patents

Abstract

PURPOSE:To enable the keeping of good appearance favorably by providing a highly water absorbable resin layer between a gauze layer and an adhesive tape to make the highly water absorbable resin layer absorb and solidify blood from a wound. CONSTITUTION:This highly liquid absorbable adhesive band has an adhesive tape 2 provided with a gauze layer 1 and a breathing holes 5 and a highly water absorbable resin layer 3 is provided between the gauze layer 1 and the adhesive tape 2. A non-liquid permeable sheet 4 is used as auxiliary material whenever necessary. The highly water absorbable layer has a highly water absorbable resin to absorb body liquor such as blood infiltrated through the gauze layer and prevents diffusion thereof by partially solidifying it. The water absorbable resin herein used is (meth)acrylate polymer, and (or) a crosslinked product thereof, a starch-acrylate graft copolymer and/or a crosslinked product thereof or the like. The water absorption multiplying factor of the water absorbable resin ranges preferably 50 to 1,300.

Description

DETAILED DESCRIPTION OF THE INVENTION [Background of the Invention] Technical Field The present invention relates to a gauze adhesive plaster used for the protection and treatment of minor injuries such as cuts and abrasions.

<Prior Art> Bandages with gauze are widely used in daily life and work for the purpose of protecting and treating minor injuries such as cuts and abrasions. However, when bleeding continues even after applying a general adhesive bandage with gauze, it is possible that the gauze used does not absorb enough blood, or that the area near the surface of the bandage does not absorb enough blood. Even the gauze can be stained red by the blood, and the color may become visible from the outside. This problem should be resolved, as it prolongs the recovery of the wound and also worsens the aesthetic appearance (young children may cry when they see the color of blood).

[Summary of the invention]

Summary The present invention has been devised in view of the above-mentioned conventional problems, and improves the aesthetic appearance of a bandage by absorbing and fixing bleeding from the wound in the superabsorbent resin layer after applying the bandage. It is to be kept in a safe place.

Therefore, the highly absorbent bandage according to the present invention is a bandage that has a gauze layer and an adhesive tape for fixing the gauze layer to a wound, and has a super absorbent resin between the gauze layer and the adhesive tape. It is characterized by having a layer.

Effects> The highly liquid-absorbent bandage according to the present invention is capable of absorbing and retaining a large amount of body fluids such as blood, compared to conventional gauze-attached bandages. Therefore, with the normal amount of fluid coming out from a small wound where a general gauze bandage is used, the color of body fluids such as blood absorbed into the bandage will not be visible to the outside.

[Detailed description of the invention]

Highly Absorbent Bandage> The highly absorbent bandage of the present invention has a gauze layer and an adhesive tape for fixing the gauze layer to a wound, and the adhesive tape has an adhesive tape between the gauze layer and the adhesive tape. It is provided with a super absorbent resin layer.

The highly absorbent adhesive plaster according to the present invention is essentially the same as the conventional adhesive plaster with gauze, except that it is provided with a highly absorbent resin layer. Therefore, the size and shape of the highly absorbent bandage according to the present invention may be the same as those used in conventional gauze-attached bandages or with necessary changes, unless it contradicts the spirit of the present invention. can be adopted.

FIGS. 1 and 2 show one preferred embodiment of the highly absorbent bandage according to the present invention.

This figure shows a highly absorbent bandage having a gauze layer 1 and an adhesive tape 2, with a super absorbent resin layer 3 provided between the second gauze layer 1 and the adhesive tape 2. . Note that the liquid-impermeable sheet 4 is an auxiliary material used as necessary. Plates made using such auxiliary materials are also preferred examples of highly absorbent bandages according to the present invention.
Therefore, the highly absorbent bandage according to the present invention is not only composed of a gauze layer, an adhesive tape, and a highly absorbent resin layer, but also includes such purposeful auxiliary materials as necessary. It also includes.

In addition, in the case of the product shown in Figure 1, "a super absorbent resin layer is provided between the gauze layer and the adhesive tape" means "a super absorbent resin layer is provided between the gauze layer and the adhesive tape (as necessary)". "A super absorbent resin layer is provided via a correspondingly provided auxiliary material."

Gauze layer> This part is the part that comes into direct contact with the wound. Therefore, this layer is normally composed of a hygienic sheet-like material (for example, sanitary gauze, nonwoven fabric, etc.) similar to that in conventional gauze adhesive plasters.In the present invention, the superabsorbent resin layer is Particularly preferred are those that allow bodily fluids such as blood to penetrate quickly.

Super Water Absorbent Resin Layer> This layer is for the purpose of absorbing body fluids such as blood that have penetrated through the gauze layer by the super water absorbent resin contained therein, and fixing them in that area to prevent their diffusion.

There are various types of water-absorbing resins that can be used, and specific examples include: (a) (meth)acrylate polymer; and/or
A crosslinked product thereof, (b) a saponified product of (meth)acrylic ester-vinyl acetate copolymer, and (or) a crosslinked product thereof, (c) a starch-acrylate graft copolymer, and (or) a crosslinked product thereof. (d) saponified starch-acrylonitrile graft copolymer and (or) crosslinked product thereof; (e) saponified starch-(meth)acrylic acid ester graft copolymer and (or) crosslinked product thereof , (f) saponified starch-acrylonitrile-vinylsulfonic acid graft copolymer, and (or) crosslinked product thereof, (g) maleic anhydride grafted polyvinyl alcohol polymer, and (or) crosslinked product thereof, (h) Polyethylene oxide and/or crosslinked products thereof
Examples include sodium carboxymethylcellulose and/or crosslinked products thereof. Here "(meth)acrylic"
refers to both "acrylic" and "methacrylic".

Furthermore, one or more copolymerized monomers (eg, itaconic acid, acrylamide, etc.) may be used in amounts within a range that does not reduce the performance of the water-absorbing resin as described above.

When the water-absorbing resin is a carboxylate type, that is, a salt type, examples include alkali metal salts such as sodium and potassium, alkaline earth metal salts such as magnesium and calcium, and particularly preferred are alkali metal salts such as magnesium and calcium. It is a metal salt type.

The water-absorbing resin may be one in which an inert inorganic powder such as particulate silica, titanium dioxide powder, alumina powder, or a surfactant is added as an additive at a proper time and in an appropriate amount depending on the desired purpose.

Regarding such water-absorbing resins, for example,
-25045, JP-A-57-158210, JP-A-57-21.405, JP-A-57-98513, JP-A-61-87702. Examples of typical manufacturing include:

Example 1 An aqueous solution of an α,β-unsaturated carboxylic acid and its alkali metal salt is suspended in a petroleum hydrocarbon solvent containing a sucrose fatty acid ester in the presence or absence of a crosslinking agent, and a radical polymerization initiator is A method of polymerizing in the presence of.

Example-2 Acrylic acid and alkali acrylic acid salt aqueous solution
A method in which a surfactant having LB8 to 12 is suspended in an alicyclic or aliphatic hydrocarbon solvent and polymerized in the presence of a water-soluble radical polymerization initiator.

Example 3 A reaction product obtained by grafting 1 to 20% of α, β-unsaturated carboxylic acid or its anhydride to a monoolefin polymer having a molecular weight of 750 to 10,000, or a monoolefin polymer having an acid value of Using the product obtained by oxidizing it so that it becomes 10 to 100 as a protective colloid,
A method in which an aqueous monomer solution is suspended in a polymerization-inert, hydrophobic liquid and polymerized in the presence of a water-soluble radical polymerization initiator.

Example 4 A method of polymerizing acrylic acid and an aqueous acrylic acid salt aqueous solution impregnated in a nonwoven fabric, paper, etc. using an electron beam and/or a redox-based water-soluble radical polymerization initiator.

The method for producing the water-absorbing resin that is the object of the present invention is not limited to the above-mentioned method, and any method may be used.

There are various types of water absorption capacity of the water absorbent resin, but those used in the present invention preferably range from 30 times to 2000 times, particularly preferably from 50 times to 1300 times. In order for a small amount of water-absorbent resin to absorb/retain body fluids such as blood from a wound, a water absorption capacity of at least 30 times is required. Below this value, the amount of water-absorbent resin used increases, making disposable bandages costly. This is not desirable. Moreover, if the water absorption capacity is 2000 times or more, the gel strength will be weak when body fluids are absorbed, and the shape retention will be weak, so that the water-absorbing resin may extrude during use, which is not preferable.

The amount of water-absorbing resin varies depending on the amount of liquid absorbed by the target water-absorbing resin or the size of the bandage, but it is generally 0.05g.
From 0.3g, preferably from 0.05g to 0.1.
5 gs. 0. If the amount is less than 0.05 g, the time required for liquid absorption may become longer, or the amount of liquid absorbed may be insufficient, resulting in leakage into body fluids, which is not preferable. Also, 0
．． If it exceeds 3 g, the cost will increase, which is not preferable.

3 and 4 show details of a preferred water-absorbing resin layer used in the present invention. When using powdery or lumpy absorbent resin, for example, as shown in FIG. It is preferable to encapsulate a powdery or lumpy water-absorbing resin in the product. It is within the scope of the present invention to use any material other than the water absorbent resin as a constituent of the water absorbent resin layer as long as it does not substantially inhibit or improve water absorption. Specific monthly charges include fluff pulp, cotton, and fibrous materials; for example, these may be mixed with water-absorbing resin and encapsulated in the bag-like material shown in Figure 3, or they may be mixed in one or more layers. It is also possible to use a multilayer structure.

In addition, in the above-mentioned manufacturing example Example 4, a product in which the water absorbent resin 8 and the nonwoven fabric 9 etc. are integrated as shown in FIG. 4 is obtained, but it is clear that such a type can also be used. It is. These allow control of liquid absorption rate, product feel, etc.

Liquid-impermeable sheet〉 This sheet is provided as necessary to prevent body fluids fixed in the superabsorbent resin layer from penetrating into the adhesive tape and to prevent body fluid-absorbing areas from being exposed, and to maintain aesthetic appearance. be. The material is preferably a general liquid-impermeable sheet, such as a polymer film or oil paper, and preferably a dark-colored or non-transparent sheet.

Adhesive Tape> The main purpose of this adhesive tape is to fix the aforementioned gauze layer and water-absorbing resin layer (and auxiliary materials), as well as to adhere to the skin and fix the bandage to the wound. This adhesive tape is essentially the same as that used in conventional gauze adhesive plasters, and is therefore a non-irritating adhesive suitable for adhesion to and removal from the skin on conventional films, cloth, etc. It is common to use one coated with

Formation of a highly absorbent bandage> The gauze layer, the highly absorbent resin layer, and optionally auxiliary materials (for example, a liquid-impermeable sheet) are layered on at least a portion of the adhesive side of the adhesive tape. The adhesive is fixed to form the highly absorbent adhesive plaster of the present invention.

In order to prevent each of the above-mentioned materials from peeling off from each other, it is preferable that the periphery of the materials be adhered and integrated by known means such as pressure bonding, hot melt, adhesive, etc., as necessary.

In addition, in the bandage of the present invention, it is necessary to maintain the hygiene of the gauze surface until it is actually applied to the affected area, to prevent the adhesive surface of the adhesive tape from drying out, or to make it easier to apply the bandage to the affected area. It is common practice to provide a release tape on the gauze surface and the adhesive surface of the adhesive tape.

[Brief explanation of the drawing]

Figures 1 and 2 show a preferred specific example of the highly absorbent bandage of the present invention, with Figure 1 being a sectional view of the highly absorbent bandage, and Figure 2 being a cross-sectional view of the highly absorbent bandage. It is a perspective view of a liquid bandage. 3 and 4 show details of typical examples of the superabsorbent resin layer used in the superabsorbent bandage of the present invention. It shows a sheet sandwiched and fixed between two liquid-permeable sheets, and FIG. 4 shows an integrated sheet made by polymerizing a superabsorbent resin on a fibrous sheet. DESCRIPTION OF SYMBOLS 1... Gauze layer, 2... Adhesive tape, 3... Super water absorbent resin layer, 4... Liquid impermeable sheet, 5... Air hole, 6... Super water absorbent resin, 7...Water permeable sheet, 8.
...Super absorbent resin, 9...Nonwoven fabric. District 1, Figure 2, Figure 3

Claims (1)

[Claims] A highly liquid-absorbing bandage having a gauze layer and an adhesive tape for fixing the gauze layer to a wound, characterized in that a super-absorbent resin layer is provided between the gauze layer and the adhesive tape. Sexual bandage.