JPH11106720A - Waterproof adhesive tape for specially equipped vehicles - Google Patents

Abstract

(57) [Problem] To provide a waterproof adhesive tape for a specially equipped vehicle which is excellent in waterproofness, weather resistance, workability and appearance, and can also be applied to a waterproof treatment portion. The object of the present invention is to apply a pressure-sensitive adhesive composition based on butyl rubber colored in gray to one surface of a substrate obtained by laminating a polyester film and an aluminum foil, The problem can be solved by subjecting the polyester film to a pretreatment for coating.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof adhesive tape for a specially equipped vehicle used for waterproofing a rivet fixing portion and a joint portion of an aluminum panel of a specially equipped vehicle, and is particularly excellent in waterproofness, workability, weather resistance and finish. The present invention relates to a waterproof adhesive tape for specially equipped vehicles.

[0002]

2. Description of the Related Art Heretofore, a silicone sealant has been used for waterproofing a rivet fixing portion of an aluminum panel of a specially equipped vehicle. However, although this silicone sealant has no problem in terms of waterproofness, it has many problems as described below.

[0003]

The problem with the silicone sealant used for waterproofing the rivet fixing portion of the aluminum panel of a specially equipped vehicle is that, first of all, uneven coating occurs at the time of coating. It is different. In addition, the drying time is long, it takes about one day and night to dry, and the workability is extremely poor. In addition, since the silicone sealant has poor weather resistance, there has been a problem that the silicone sealant turns black in several months after the waterproof treatment is performed, and the appearance of the waterproof treatment portion of the specially equipped vehicle is changed. Further, there has been another problem that it is impossible to apply the coating to the surface coated with the silicone sealing agent.

As described above, the silicone sealant has various problems, but there has been no alternative member.

The present invention has been made to solve the above-mentioned problems, and is excellent in waterproofness, weather resistance, workability and appearance,
It is another object of the present invention to provide a waterproof adhesive tape for a specially equipped vehicle that can coat the waterproof processing section.

[0006]

In order to achieve this object, in the present invention, a pressure-sensitive adhesive composition based on butyl rubber colored in gray is applied to a base material obtained by laminating a polyester film and an aluminum foil. One side is coated to produce a waterproof adhesive tape for specially equipped vehicles.

By using the waterproof adhesive tape for waterproofing the rivet fixing portion of the aluminum panel of a specially equipped vehicle, the time required for the waterproofing process is greatly reduced, and the finish is uniform and there is no difference in finish between workers. Waterproofing is now possible.

[0008] Further, in the pressure-sensitive adhesive composition based on butyl rubber, by coloring the butyl rubber to gray by adding titanium white and carbon black, the color of the pressure-sensitive adhesive of the waterproof pressure-sensitive adhesive tape is almost the same as the color of the aluminum panel of the specially equipped vehicle. The adhesive can be made the same color and the adhesive on the side of the adhesive tape can be made inconspicuous.

The butyl rubber pressure-sensitive adhesive composition used for the above-mentioned waterproof pressure-sensitive adhesive tape is preferably a crosslinked type.

Butyl rubber is inherently excellent in weather resistance, and in the above-mentioned waterproof adhesive tape, the aluminum foil blocks ultraviolet rays and prevents the butyl rubber from deteriorating due to ultraviolet rays. By using it instead of the sealing agent, the weather resistance of the waterproof portion is greatly improved. As a result, even after a long period of time,
The appearance change on the side of the waterproofing section of the specially equipped vehicle is no longer seen.

In addition, by using aluminum foil of almost the same color as the aluminum panel of the specially equipped vehicle as the base material of the waterproof adhesive tape, the attached waterproof adhesive tape is inconspicuous, and the finish of the waterproofing process is improved. Was completed.

Further, in the above-mentioned waterproof pressure-sensitive adhesive tape for specially equipped vehicles, the polyester film as a base material is subjected to a pretreatment such as a corona discharge treatment or a mat treatment so that the polyester film surface can be coated with an acrylic resin or a urethane resin. It is now possible.

[0013]

FIG. 1 is a schematic sectional view showing a part of a waterproof adhesive tape for specially equipped vehicles according to the present invention. As shown in FIG. 1, an adhesive based on butyl rubber and a thickness of 0.92 mm is attached to one surface of a substrate on which a polyester film 14 having a thickness of 0.05 mm and an aluminum foil 13 having a thickness of 0.025 mm are bonded. A layer 12 is provided, on which a release paper 11 is provided.

FIG. 2 is a schematic sectional view showing a part of another waterproof adhesive tape for specially equipped vehicles according to the present invention. As shown in FIG. 2, a polyester film 24 having a thickness of 0.05 mm provided with a pre-treatment layer 25 by performing a pre-treatment for coating and a 0.025 mm thickness
An adhesive layer 22 based on butyl rubber and having a thickness of 0.92 mm is provided on one surface of the substrate on which the aluminum foil 23 is bonded, and a release paper 21 is provided thereon.

[0015]

【Example】

Example 1 A waterproof adhesive tape for a specially equipped vehicle shown in FIG. 1 was applied to a rivet fixing portion of an aluminum panel on a roof of a specially equipped vehicle and subjected to a waterproof treatment. Since this waterproof pressure-sensitive adhesive tape uses an aluminum foil as a base material, the adhered waterproof pressure-sensitive adhesive tape was inconspicuous and had an excellent appearance. The workability, waterproofness, finished state of waterproofing treatment, and appearance change after six months of this waterproof adhesive tape were evaluated. The evaluation results are shown in Table 1 below.

Example 2 A waterproof adhesive tape for a specially equipped vehicle shown in FIG. 2 was applied to a rivet fixing portion of an aluminum panel on a roof of a specially equipped vehicle, subjected to a waterproof treatment, and an acrylic coating was applied to a polyester film surface of a base material. The roof of the specially equipped vehicle is painted with acrylic,
The waterproof adhesive tape was completely concealed and became colorful. The workability, waterproofness, finished state of waterproofing treatment, and appearance change after six months of this waterproof adhesive tape were evaluated. The evaluation results are shown in Table 1 below.

Comparative Example A rivet-fixed portion of an aluminum panel on a specially equipped vehicle roof was subjected to a waterproof treatment with a conventionally used silicone sealing agent. Acrylic coating was applied to the surface coated with the silicone sealant, but coating was impossible. The workability, waterproofness, finished state of waterproofing treatment, and appearance change after six months of the silicone sealant were evaluated. Table 1 shows the evaluation results.
Shown in

[0018]

[Table 1]

As shown in Table 1, the waterproofness was obtained in Examples 1 and 2.
In each of Examples 1 and 2, the finished state was good, while in Comparative Example, the finished state was inferior. The appearance after six months did not change in any of Examples 1 and 2, but changed in Comparative Example. Further, the coating on the waterproofing portion was possible in Example 2 but not possible in Comparative Example.

[0020]

As described above, by implementing the present invention, waterproofness, weather resistance, workability and appearance are excellent, and
It is possible to provide a waterproof adhesive tape for a specially equipped vehicle, which can also be applied to the waterproof processing section.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a part of a waterproof adhesive tape for specially equipped vehicles according to the present invention.

FIG. 2 is a schematic sectional view showing a part of another waterproof adhesive tape for specially equipped vehicles according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Release paper 12 ... Adhesive layer based on butyl rubber 13 ... Aluminum foil 14 ... Polyester film 21 ... Release paper 22 ... Adhesive layer based on butyl rubber 23. ..Aluminum foil 24 ... Polyester film 25 ... Pretreatment layer

Continued on the front page (72) Inventor Masato Koyama 3819 Toto, Tama-ku, Kawasaki City, Kanagawa Prefecture Inside Sliontec Co., Ltd. (72) Inventor Masaaki Hiramoto 3819 Nototo, Tama-ku, Kawasaki City, Kanagawa Prefecture Inside Sliontec Co., Ltd. Takayuki Kobayashi 5-5-5 Midoricho, Koganei-shi, Tokyo Norton Co., Ltd.

Claims (3)

[Claims] 1. A waterproof pressure-sensitive adhesive tape for a specially equipped vehicle, characterized in that one side of a substrate is coated with a pressure-sensitive adhesive composition based on butyl rubber colored in gray. 2. The waterproof pressure-sensitive adhesive tape for specially equipped vehicles according to claim 1, wherein said base material is formed by laminating a polyester film and an aluminum foil. 3. The waterproof adhesive tape for a specially equipped vehicle according to claim 1, wherein said base material is made by laminating an aluminum foil with a polyester film subjected to a pretreatment for coating.