JPS6057473B2 - How to attach the adhesive plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for attaching an adhesive plate-like body, and is particularly applicable to tile surfaces, glass surfaces, etc. that are exposed to high humidity such as bathrooms, or where water is splashed such as washrooms and kitchens. Provides a method for firmly attaching a hanging device, towel hanger, soap holder, etc. to a wall surface made of a glassy material with a small contact angle to water, such as an enamel surface. It is something to do.

2. Description of the Related Art Conventionally, an adhesive plate-like body is known in which a hook part or the like is integrally or separately formed on the lower part of a base plate having an adhesive layer provided on the back surface.

Such a plate-like body is a double-sided adhesive in which a pressure-sensitive adhesive is applied to both sides of a foam sheet so that the adhesive layer adheres well to rough surfaces such as concrete and wood. Since one side of the member is adhered, if the adhesive layer is attached to the surface of the adherend and a load is applied by suspending the article from the hook, etc., the foam sheet will break down. Combined with the deformation, a large arm-opening force (adhesive force when peeled off at a certain angle from the adherend surface) acts intensively on the interface between the top of the adhesive layer and the adherend surface, and as a result, It has the disadvantage that the upper end portion of the adhesive layer gradually peels off from the surface of the adherend. This drawback is especially true when the above-mentioned adhesive is applied to a wall surface made of a glassy material with a small contact angle to water, such as a tile surface, a glass surface, or an enamel surface where water is splashed, such as in a bathroom, kitchen, or washroom. When used with a plate-like body attached,
This is often caused by water seeping into the wall.

In any case, there is a drawback that the adhesive layer's inherent adhesion retention ability is not fully exhibited. As a result of various studies in view of the state of the prior art, the inventors of the present invention have found that when attaching an adhesive plate to an adherend surface having a glass state with a contact angle θ of 25 or less with water, a certain kind of adhesion auxiliary sheet is available. The present invention was based on the finding that by attaching the adhesive through a wall surface such as a bathroom or a washroom, sufficient adhesion retention ability can be exhibited even on walls with a small contact angle to splashing water, such as in bathrooms and washrooms.

That is, in the present invention, when a sticking plate-like body having an adhesive layer formed on the back side is attached to the surface of an adherend having a glass state, a base sheet piece having a larger area than the adhesive layer of the plate-like body is attached. The present invention provides a method for attaching an adhesive plate-like body, which is characterized in that the adhesive plate is attached through an auxiliary sheet having an adhesive layer on one side.

The attachment method of the present invention will be specifically explained below with reference to the drawings using an adhesive plate.

FIG. 1 shows an example of the adhesive plate-like body 1. In the drawing, reference numeral 11 indicates a base plate 1 made of plastic, wood, metal, etc.
Reference numeral 2 denotes a hook portion provided integrally or separately (not shown) in the lower portion of the base plate 11 (below the center portion). Reference numeral 13 denotes an adhesive layer provided on the back surface of the base plate 11, and the layer 13 is composed of a pressure-sensitive adhesive and a double-sided adhesive member made by coating and impregnating a foam sheet, nonwoven fabric, cloth, etc. with the adhesive. .

In the figure, reference numeral 14 denotes a release material such as a release film or resin-treated paper used to protect the surface of the adhesive layer 13.
FIG. 2 shows an example of the adhesion auxiliary sheet 2. The auxiliary sheet 2 has a shape almost similar to the surface shape of the adhesive layer 13, and has a larger surface area than the adhesive layer 13. In the drawings, reference numeral 21 denotes a basic sheet piece that is larger in surface area than the adhesive layer 13 and has appropriate flexibility, self-supporting properties, and water repellency. water-based plastic sheet,
It is constructed from a base material such as a metal sheet. In particular, sheets selected from the group of polyethylene terephthalate sheets, rigid polyvinyl chloride sheets, acrylic sheets, and aluminum sheets have suitable flexibility and self-supporting properties, and are excellent in processability such as cutting and punching operations. preferable. However, the fact that sheets have a thickness of about 25 to 300 μm and that the contact angle of the surface to which the adhesive layer 13 is bonded to water is large is good for adhesion to the surface of an adherend in a glass state. It is desirable in terms of deformation resistance and adhesion, and the above-mentioned sheets are those that best satisfy these properties.

On one side of the sheet piece 21, there is an adhesive layer 22 that firmly adheres to the adherend surface mainly made of rubber and/or synthetic resin, and a release material 2 such as a release film or resin-treated paper.
3 are formed in sequence.

Although not shown in the drawings, an adhesive layer may be formed on the surface of the sheet piece 21 using an undercoat, corona discharge machining, etc., or an adhesive layer may be formed in a shape that is approximately the same as or slightly larger than the adhesive layer 13. When the adhesive layer 13 and the sheet piece 21
This is preferable because it provides strong adhesion to the surface.
The adhesive plate-like body 1 and the auxiliary sheet 2 configured in this manner have a contact angle θ of 25 with water when exposed to high humidity or splashed with water, as shown in FIG. 3B. It is attached to the surface H of an adherend having the following glass state, such as tiles, glass, enamel, etc.

That is, the auxiliary sheet 2 is attached to the surface H of the adherend via the adhesive layer 22. Next, the adhesive plate-like body 1 is adhered to the surface of the adhered sheet 2 via the adhesive layer 13,
The installation method of the present invention is completed.

In the present invention, the adhesive layer 13 of the adhesive plate 1 is configured to have a smaller surface area than the auxiliary sheet 2, and is adhered with at least the upper end area of the sheet 21 constituting the auxiliary sheet 2 remaining. It is preferred that FIG. 4 A and B
The method of installation of the is a special illustration.

According to the experiments conducted by the present inventors, as shown in FIG. 3A and FIG. It has been found that gluing the body 1 to the auxiliary sheet 2 best achieves the objectives of the invention. According to the attachment method of the present invention, a load is applied to the plate-like body 1 by suspending the article from the hook part 12 of the plate-like body 1 formed by adhering the plate-like body 1 to the auxiliary sheet 2. However, since the sheet piece 21 and the adhesive layer 13 are firmly adhered to each other, they will not peel off.

That is, the peeling action due to the arm-opening force exerted by the load applied to the plate-like body 1 acts on the interface between the adhesive layer 22 and the adherend surface directly below the upper end portion of the adhesive layer 13 via the sheet piece 21. (
The peeling action due to the arm-opening force acting at the position C in FIG. Since the adhesive acts in the direction (parallel to the surface of the adherend), peeling of the adhesive layer 22 from the surface of the adherend is prevented. Since the attachment method of the present invention is configured in this way, the adhesive layer of the adhesive plate is firmly adhered to the sheet surface and is not affected by the peeling action caused by the arm opening force, and the arm opening force is This acts on the adhesive layer of the adhesion auxiliary sheet that is attached to the surface of the adherend, but peeling due to the arm-opening force acting on the adhesive layer occurs at the upper end above the position where the arm-opening force acts. The shear adhesion of the adhesive layer beneath the surface of the area is replaced and peeling of the adhesive layer is prevented.

Furthermore, if a water-repellent base sheet piece is used as the adhesion auxiliary sheet, moisture will not penetrate into the adhesive layer, so that the adhesion retention ability of the adhesive plate can be maximized.

Next, examples of the present invention will be shown.

The materials used for testing in the Examples and Comparative Examples below are as follows. Adherent H: A tile with a glassy surface and a contact angle θ of 12 to 15 with respect to water.

Adhesive layer 13: A double-sided adhesive member formed by providing pressure-sensitive adhesive layers (each 100 μm in thickness) mainly composed of a thermoplastic block copolymer on both sides of a butyl rubber foam sheet with a thickness of 1 Tr$l.

An adhesive film formed by providing an acrylic pressure-sensitive adhesive layer (thickness 25μ) mainly composed of acrylic acid ester on one side of a polyester film having a thickness of 50μ.
The contact angle θ on the back surface is 74-78.

Adhesive plate-like body 1: ABS resin adhesive suspension device (contact angle 0 is 7
0 to 80) Example A 40×4 closed-angle adhesion auxiliary sheet is attached to the surface of the adherend (tile surface).

On the other hand, prepare a pasting plate-like body with one side of a 25 x 30-Fr$L square adhesive layer pasted on the back side in advance, and as shown in Figure 3A (and B), the upper end area of the sheet surface leave the
It was attached so that the adhesive layer was located approximately in the center. A load of the value shown in Table 1 was applied to the hook portion of the attached plate-like body attached in this way, and the number of days of retention was measured. Comparative Example 1 This is the same as the example except that the adhesive layer was directly attached to the adherend (tile) without using the adhesion auxiliary sheet.

Comparative Example 2 The size of the adhesive layer is the same as the size of the adhesion auxiliary sheet, i.e. 4
It is the same as the example except that it is 0x40w0n square.

As is clear from Table 1, it is clear that the attachment method of the present invention exhibits remarkable effects under high humidity conditions even when the adherend surface is formed of a tile surface having a glass state.

That is, the conventional adhesive plate attachment method (Comparative Example 1),
In the attachment method (Comparative Example 2) in which the surface area is the same as that of the adhesive layer even if an adhesion auxiliary sheet is used, when the humidity is normal (60% R-H), the attachment method of the present invention and Although they have almost the same retention period, when the humidity is saturated (100% R-H) and water droplets adhere to the tile surface, the installation methods of Comparative Examples 1 and 2 have a lower load. Although it easily peels off immediately after loading regardless of the difference, the fact that the attachment method of the present invention provides a suitable retention result is remarkable.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an example of an adhesive plate used in the present invention, FIG. 2 is a partial sectional view showing an example of an adhesion auxiliary sheet,
FIG. 3A is a plan view showing an example of the attachment method of the present invention;
FIG. 3B is a sectional view of FIG. 3A taken along line I-1'' and viewed from the direction of the arrow, and FIGS. 4A and 4B are plan views showing examples of other attachment methods. 1... ... Adhesive plate-like body, 13... Adhesive layer,
2... Adhesion auxiliary sheet, 21... Water repellent base sheet piece.

Claims (1)

[Scope of Claims] 1. When adhering an adhesive plate-like body with an adhesive layer formed on the back surface to an adherend surface that is exposed to high humidity or has a glassy state where water is scattered, Attachment of an adhesive plate-like body, characterized in that it is pasted through an auxiliary sheet formed by providing an adhesive layer on one side of a water-repellent basic sheet piece having a larger area than the adhesive layer of the plate-like body. Method. 2. A method for attaching an adhesive plate according to claim 1, in which the adhesive plate is attached leaving at least the upper end area surface of the auxiliary sheet surface.