JPH0619548Y2 - Adhesive sheet for skin application - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a pressure-sensitive adhesive sheet for sticking on skin, the purpose of which is to easily remove the release paper without touching the pressure-sensitive adhesive layer with a finger. An object of the present invention is to provide a skin-adhesive pressure-sensitive adhesive sheet that can be easily and satisfactorily adhered to a target surface of an object to be adhered, even if the substrate is made of a material having a high skin adhesion property.

(Prior Art) Conventionally, there is an adhesive sheet (a) shown in FIG.

As shown in FIG. 4 (A), this adhesive sheet (a) has an adhesive layer (c) formed on one surface of a sheet-like substrate (b) to form an adhesive sheet body (d), The layer (c) is coated with a release paper (e), and the release paper (e) is peeled off from the adhesive layer (c) as shown in FIG. 4 (B) before use.

However, in this adhesive sheet (a), since the sheet-shaped substrate (b) and the release paper (e) have the same shape, the adhesive layer (c) is exposed when the release paper (e) is peeled off. Touch a part of the seat body (d)
It had to be supported by (f), and the adhesive layer (c) adhered to the finger, which was inconvenient to handle.

On the other hand, the following techniques have already been created for the purpose of easily peeling the adhesive layer from the release paper.

In Japanese Utility Model Laid-Open No. 51-28094, an adhesive is applied to the back side of a cover made of tack paper, and a release paper suitable for the adhesive is adhered to the back of the cover paper. A "business card having an adhesive" provided with is disclosed.

Further, in Japanese Utility Model Application Laid-Open No. 56-156851, a separating line for peeling is formed from one end to the other end of a peelable non-adhesive sheet coated on both surfaces of an adhesive chip body capable of being adhered to both sides. The following "adhesive chip for posters and the like" is disclosed.

Further, in Japanese Utility Model Application Laid-Open No. 58-121352, in an adhesive strip sheet in which a large number of thin adhesive strips having an adhesive layer on the back surface are arranged on the surface of a release sheet, a position that crosses a part of each adhesive strip on the back surface of the release sheet. Discloses an "adhesive strip sheet that facilitates peeling of an adhesive strip" in which a linear folding groove is formed.

(Problems to be Solved by the Invention) However, the above-described disclosed technology has the following problems.

That is, in each of the above-described disclosed techniques, a cut line, a score line, or a fold groove is formed at an arbitrary position of the release paper (or release sheet), and the release paper (or release sheet) is formed through these.
It is also a technology that makes it easy to separate the adhesive layer from the adhesive layer, but in all of these disclosed technologies, when the adhesive layer is attached to a predetermined object, the adhesive layer is treated without touching it with a finger. There was a problem that it could not be done.

Therefore, materials such as business cards that have a relatively high self-supporting power of the base material,
Alternatively, it is suitable as an adhesive sheet used for office supplies with a relatively small area such as heading labels and tacks for indexes, but the above-mentioned technology is applied to an adhesive sheet formed in a sheet shape by being attached to the skin surface. There was a problem that it was not enough to apply it as it was.

That is, in a skin-adhesive pressure-sensitive adhesive sheet used for medical purposes or the like, the self-supporting power is low because the sheet base material is usually required to have skin adhesion.

Therefore, removal of the release paper makes wrinkles easier, or handling of the adhesive layer is difficult in many cases when a finger touches the adhesive layer, which causes a problem that the desired skin surface cannot be properly attached.

Therefore, in the industry, the release paper can be removed without touching the adhesive layer with a finger, and even a substrate having low self-supporting force can be favorably attached to the skin surface, which is suitable for medical use and the like. It was desired to create a sticky sheet that can be used for skin sticking.

(Means for Solving the Problems) In this invention, an adhesive layer is formed on one surface of a sheet-like base material to form an adhesive sheet body, and the adhesive layer of the adhesive sheet body is covered with release paper. An adhesive sheet for sticking, wherein the sheet-shaped substrate is composed of a synthetic resin having a high skin adhesiveness, and the release paper is divided into a pair of symmetrical divided pieces by a dividing line provided in the center, and A bending line parallel to the forming direction of the dividing line is formed at an edge of each of the pair of divided pieces, and the divided piece is folded back in the anti-adhesive layer direction through the bending line. The above problems are solved by providing an adhesive sheet for sticking to the skin.

(Example) Hereinafter, one example of the skin-adhesive pressure-sensitive adhesive sheet according to the present invention will be described with reference to the drawings.

1 and 2 are views for explaining a skin-adhesive pressure-sensitive adhesive sheet according to an embodiment of the present invention, in which (1) shows the skin-adhesive pressure-sensitive adhesive sheet.

First, the structure of the skin-adhesive pressure-sensitive adhesive sheet (1) will be described.

(2) is an adhesive sheet main body, and is constituted by forming an adhesive layer (4) on one surface of a sheet-shaped substrate (3).

As a material for the sheet-shaped substrate (3), a synthetic resin sheet which is transparent or semi-transparent and has excellent skin adhesion is used.

Specifically, for example, sheets of acrylic, polyethylene, urethane, ethylene-vinyl acetate copolymer resin (EVA), nylon derivative, etc. are exemplified as suitable examples.

As a material for the adhesive layer (4), a pressure sensitive adhesive, for example, a polyolefin resin, an ethylene vinyl alcohol resin, a vinyl acetate resin, an acrylic resin, a rubber resin, or the like, which has a pressure sensitive adhesive property at room temperature, is suitable. Can be used.

The adhesive layer (4) of the adhesive sheet body (2) is a release paper.
It is covered with (5).

The release paper (5) is divided into a pair of symmetrically-shaped divided pieces (7) and (7) by a dividing line (6) formed in the center.

In addition, the shape of the dividing line (6) is linear as shown in FIG.
It may be a curved line as shown in FIG. 3A or a polygonal line as shown in FIG. 3C, and the point is that the divided pieces (7) and (7) can be divided symmetrically. .

Folding curves (9) parallel to the forming direction of the dividing lines (6) are formed on the end edges (8) of the dividing pieces (7).

The folding curve (9) may be a perforation or a cut groove.

As a material for such a release paper (5), not only a synthetic resin sheet but also paper or the like is preferably used, and the surface thereof has excellent releasability, for example, polyvinyl N-octyldecyl carbamate polymer, silicone. It is treated with a resin.

Next, a method of using the adhesive sheet for skin attachment (1) will be described.

First, as shown in FIG. 2 (A), the left and right divided pieces (7) and (7) are separated from each other with the dividing line (6) as a boundary and spread to both sides, and these divided pieces (7 ) ・ Fold back (7) in the direction of the anti-adhesive layer through the folding line (9).

In this way, the split piece (7) is folded back in the direction of the anti-adhesive layer through the folding curve (9), and by supporting the split piece (7) folded back in that state with a finger, it is made of a material with rich skin adhesion. Even if it is a sheet-like substrate (3), the adhesive layer (4) is not touched by a finger, and the adhesive sheet main body (2) is in an expanded state.
With (4) exposed, it can be carried to the desired position in this state.

Then, as shown in FIG. 2 (B), the adhesive layer (4) is exposed while holding both divided pieces (7) and (7) with fingers, and the exposed adhesive layer (4) is intended as it is. Stick on the surface of the skin (10).

After that, as shown in FIG. 2 (C), the folded back pieces (7) and (7) are peeled off from the adhesive sheet body (2).

By doing this, without touching the adhesive layer (4) with a finger,
Both the divided pieces (7) and (7) can be easily removed from the adhesive sheet (2), and the adhesive sheet (2) made of a base material that is rich in skin adhesion is formed into the adhesive layer (4). The sheet (2) can be expanded with the adhesive layer (4) exposed without touching the finger, and can be carried to the intended position, and can be easily and favorably attached to an object. .

(Effects of the Invention) As described in detail above, according to the present invention, an adhesive layer is formed on one surface of a sheet-like substrate to form an adhesive sheet body, and the adhesive layer of the adhesive sheet body is covered with a release paper. In the adhesive sheet for covering and sticking, the sheet-shaped substrate is composed of a synthetic resin having high skin adhesion, and the release paper is divided into a pair of symmetrically divided pieces by a dividing line provided in the center. Further, a bending line parallel to the forming direction of the dividing line is formed at the end edge portion of the pair of divided pieces, and the dividing piece is folded back in the anti-adhesive layer direction through the bending line. Since the adhesive sheet for skin application has the following effects.

That is, the release liner is divided into a pair of divided pieces of the target shape with the dividing line as a boundary, and the divided pieces are spread to both sides while peeling with fingers, and then the divided pieces are moved in the direction of the anti-adhesive layer through the folding curve. Fold it back, in this state, spread the adhesive sheet while holding both divided pieces with your fingers to expose the adhesive layer, attach the exposed adhesive layer to the surface of the attachment target, and then remove the release paper You can do this without touching the adhesive layer with your fingers.
The adhesive sheet can be easily and satisfactorily attached to the skin surface.

That is, even with a pressure-sensitive adhesive sheet made of a base material having a high skin adhesiveness, the dividing line and the folding line can separate the pressure-sensitive adhesive layer and the release paper without touching the pressure-sensitive adhesive layer with a finger, and By bending both divided pieces divided by the dividing line through folding lines, the adhesive sheet based on synthetic resin with rich skin adhesion can be exposed without touching the adhesive layer with fingers. However, it can be spread, and in this state, it can be attached as it is to the intended skin surface, so that it has an excellent effect of being easy to handle.

[Brief description of drawings]

FIG. 1 (A) is a bottom view of a skin-adhesive pressure-sensitive adhesive sheet according to an embodiment of the present invention, FIG. 1 (B) is a cross-sectional view taken along line BB of FIG. 1 (A),
2 (A) to (C) are explanatory views of the use of the same adhesive sheet,
FIGS. 4A and 4B are explanatory diagrams of another embodiment, and FIGS. 4A and 4B are conventional explanatory diagrams. (1) …… Adhesive sheet for skin application (2) …… Adhesive sheet body (3) …… Sheet-like substrate, (4) …… Adhesive layer (5) …… Release paper, (6) …… Dividing line (7) …… Dividing piece, (8) …… End edge (9) …… Bending curve

Claims (1)

[Scope of utility model registration request] 1. A skin-adhesive pressure-sensitive adhesive sheet comprising a sheet-shaped base material having an adhesive layer formed on one surface thereof to form an adhesive sheet body, and the adhesive layer of the adhesive sheet body is covered with a release paper. The sheet-shaped substrate is composed of a synthetic resin having a high skin adhesiveness, and the release paper is divided into a pair of symmetrical divided pieces by a dividing line provided at the center, and the ends of the pair of divided pieces are divided. A fold curve parallel to the forming direction of the dividing line is formed at the edge portion, and the divided piece is folded back in the direction of the anti-adhesive layer through the fold curve, and the adhesive sheet for skin sticking is characterized.