JPH0317848Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a tape fastener for diapers such as disposable diapers, and its purpose is to have a strong adhesive force in the shear direction and to be easily peeled off in a certain direction. The purpose of the present invention is to provide a tape fastener for diapers that can be used for diapers.

(Prior Art and its Problems) Conventionally, tape fasteners for diapers have been used to secure the front and rear overlapping portions of a diaper.

However, in this conventional tape fastener, the adhesive layer is formed on the entire surface of one side of the tape base material, or is formed in the form of stripes of a constant width, so there is no difference in anti-peel strength in all directions, and the following I had a problem.

That is, if emphasis is placed on adhesiveness, it will be difficult to peel off in any direction, whereas, on the other hand, if emphasis is placed on releasability and the adhesive force is weakened, it will not be able to withstand repeated use and there is a risk of accidental peeling.

(Problems to be solved by the invention) In this invention, an attempt was made to create a tape fastener for diapers that can be easily peeled off in one direction as needed while preventing accidental peeling.

(Means for solving the problem) In this invention, the adhesive layer formed on one side of the tape base material is divided into adhesive layer units for each predetermined area, and the adhesive layer units are gradually divided in a certain direction. The above problems are solved by providing a diaper tape fastener formed in a shape that expands in area.

(Example) An embodiment of this invention will be described based on the drawings.

1A to 1E are diagrams illustrating a detachable adhesive tape as a diaper tape fastener according to an embodiment of this invention, and in the figures, 1 indicates the diaper tape fastener.

This diaper tape fastener 1 has an adhesive layer formed on one side of a tape base material 2.

The tape base material 2 may be paper, plastic, cloth,
All known tape base materials such as nonwoven fabrics can be suitably used.

As the adhesive layer, all known adhesive layers such as acrylic polymers and rubber mixtures can be suitably used.

The adhesive layer is divided into adhesive layer units 3 for each predetermined area of the tape base material 2 .

This adhesive layer unit 3 is formed in a shape whose area gradually increases in a certain direction.

In the one shown in FIG. 1A, triangular adhesive layer units 3 whose area gradually increases in the longitudinal direction of the tape base material 2 are formed at regular intervals in the longitudinal direction.

The shape of the adhesive layer unit 3 is not limited to one in which the area expands in the longitudinal direction of the tape base material 2, but may be a shape in which the area expands in the width direction of the tape base material 2, as shown in FIG. 1B.

In this case, the width of the tape base material 2 is increased by about 3 times,
The adhesive layer units 3 are also arranged in three rows.

Furthermore, the shape of the adhesive layer unit 3 is not limited to a triangle;
It may be semicircular as shown in Figure 1C, or it may be in the shape of Figure 1D.
It may be a divided shape in which the width is gradually changed as shown in FIG. 2, or a divided shape in which the vertical width is gradually changed as shown in FIG.

When this diaper tape fastener 1 is adhered to the surface of an adherend 4 such as paper, plastic, metal, or glass through an adhesive layer unit 3, as shown in FIG. In the direction from the narrow area side (direction B in the figure), peeling is difficult because the strong anti-peel force of the wide adhesive area acts at the beginning of peeling, whereas in the direction from the narrow area side to the wide area side (A direction in the figure), since only a weak anti-peel force from a narrow adhesive area acts upon the initiation of peeling, it is possible to peel more lightly and smoothly in the same direction.

To use such a diaper tape fastener 1, as shown in FIG.
A half length of the tape fastener 1 is pasted through the adhesive layer unit 3 (the direction of adhesion of the tape fastener 1 may be opposite to that shown in the figure), and a release paper 7 is pasted on the exposed surface. Sometimes, peel off the release paper 7,
As shown in FIG. 3B, it is sufficient to adhere to the front side 8 of the paper diaper 5, and the overlapping portions of the butt side 6 and the front side 8 are secured via the diaper tape fastener 1.

To remove the paper diaper 5, it is sufficient to peel off the diaper tape fastener 1 from the narrow area side of the adhesive layer unit 3 toward the wide area side. Since only force is applied, it can be peeled off more easily and smoothly in the same direction.

In addition, since it can be easily peeled off in one direction, the adhesive strength of the adhesive layer unit 3 can be made equal to or higher than that of conventional adhesive layers, and repeated attachment and detachment is possible. Accidental peeling is effectively prevented.

(Effect of the invention) This invention has a shape in which the adhesive layer formed on one side of the tape base material is divided into adhesive layer units for each predetermined area, and the area of the adhesive layer units gradually expands in a certain direction. Since the diaper tape fastener is formed by the following methods, it has the following effects.

In the direction from the narrow area side to the wide area side of the adhesive layer unit, only the weak anti-peel force of the narrow adhesive area acts at the start of peeling, so that it can be peeled off more lightly and smoothly in the same direction.

In addition, since it can be easily peeled off in one direction, the adhesive strength of each adhesive layer can be equal to or higher than conventional adhesive strength, allowing repeated attachment and detachment and preventing accidental peeling. Can be effectively prevented.

[Brief explanation of drawings]

1A to 1E are bottom views of a diaper tape fastener according to an embodiment of this invention, FIG. 2 is an explanatory view of the action of the same tape fastener, and FIG. 3A,
B is an explanatory view of the use of the same tape fastener. 1... Diaper tape fastener, 2... Tape base material, 3... Adhesive layer unit.

Claims (1)

[Scope of utility model registration request] A diaper tape in which an adhesive layer formed on one side of a tape base material is partitioned into adhesive layer units for each predetermined area, and the adhesive layer units are formed in a shape whose area gradually expands in a certain direction. Huasner.