JPH07242861A - Double-face adhesive tape for synthetic resin member - Google Patents

Abstract

PURPOSE:To improve the fixing durability of a synthetic resin molded article such as a side body trim of automobile. CONSTITUTION:This double-face adhesive tape 1 has a long substrate 2. The substrate 2 is impermeable to a plasticizer contained in a molded article made of a synthetic resin such as a vinyl chloride resin and is composed of e.g. a urethane film. Tacky adhesives 3, 4 are applied respectively and reverse surfaces of the substrate 2 and releasing papers 5, 6 are releasably applied to the surfaces of the tacky adhesive layers 3, 4, respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-sided pressure-sensitive adhesive tape for a synthetic resin member for sticking a member molded of a synthetic resin such as vinyl chloride molding.

[0002]

2. Description of the Related Art Conventionally, as a double-sided adhesive tape for sticking a molding to the body of an automobile, the one shown in FIG. 4 has been known. The double-sided adhesive tape 30 has a structure in which release papers 32 and 33 are releasably attached to both surfaces of an adhesive layer 31, and the adhesive layer 31 is obtained by impregnating paper with an adhesive. Then, when the vinyl chloride molding 34 shown in FIG. 5 is attached to the vehicle body, one release paper 32 is removed, and the exposed one surface of the adhesive layer 31 is removed as shown in FIG. Stick on the mall 34. Then, the other release paper 33 is removed, and the other surface of the exposed adhesive layer 31 is attached to a predetermined portion such as a side surface of the vehicle body 35 as shown in FIG.

[0003]

However, in the molding 34 molded from a synthetic resin such as vinyl chloride,
In order to ensure the required flexibility, it contains a plasticizer,
As schematically shown in FIG. 6, the plasticizer P migrates from the inside of the molding 34 to the surface over time. At this time, the adhesive layer 32 has a structure in which paper is impregnated with an adhesive as described above, and has a property of allowing the plasticizer P to pass through.

Therefore, the plasticizer P that has migrated from the inside of the molding 34 passes through the adhesive layer 32 and then the adhesive layer 32.
Stays between the vehicle and the vehicle body 35. Therefore, when the period elapses, the plasticizer P accumulates between the adhesive layer 32 and the vehicle body 35,
It is interposed between the adhesive layer 32 and the vehicle body 35. As a result, the adhesive force of the adhesive layer 32 to the vehicle body 35 decreases, and the molding 34
Could be separated from the vehicle body 35.

The present invention has been made in view of such conventional problems, and provides a double-sided pressure-sensitive adhesive tape for a synthetic resin member, which is improved in sticking durability of a member molded of synthetic resin such as molding. The purpose is to do.

[0006]

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a film-like substrate having impermeable property to a plasticizer contained in a member molded of a synthetic resin. And a pressure-sensitive adhesive applied to both sides of the base material.

[0007]

In the above structure, when the member formed of the synthetic resin is adhered to the predetermined surface, the adhesive applied to one surface side of the film-shaped base material is adhered to the member and the base material. The pressure-sensitive adhesive applied to the other surface is attached to the predetermined surface. As a result, the member is attached to the predetermined surface via the base material and the adhesive on both surfaces of the base material. In the state of being adhered to this predetermined surface, the plasticizer contained in the member migrates from the inside to the outside with the passage of time, and further, to the adhesive applied to the one surface side. Move to. However, since the base material coated with this pressure-sensitive adhesive is impermeable to the plasticizer, the plasticizer transferred from the member formed of the synthetic resin permeates the base material. It does not move between the predetermined surface and the other adhesive.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. That is, as shown in FIG. 1, the double-sided pressure-sensitive adhesive tape 1 has a long and film-like base material 2. The base material 2 has a property of not allowing a plasticizer contained in a member molded of a synthetic resin such as vinyl chloride to pass through, and is made of, for example, a urethane film. Adhesives 3 and 4 are applied to one side and the other side of the base material 2, respectively, and release papers 5 and 6 are releasably attached to the surfaces of the adhesives 3 and 4, respectively. .

On the other hand, the member to be attached in this embodiment is the molding 7 shown in FIG. The molding 7 is a decorative member that is attached to the side surface of the vehicle body of an automobile, is made of vinyl chloride, and contains a plasticizer to ensure the required flexibility.

In this embodiment having the above-mentioned structure, when the molding 7 is attached to the vehicle body, one release paper 4 is removed and the exposed surface of the adhesive 3 is molded as shown in FIG. Stick on 7. Then, the other release paper 6 is removed, and as shown in FIG. 3, the exposed surface of the adhesive 4 is attached to a predetermined portion such as a side surface of the vehicle body 8. This allows
The molding 7 is attached to the vehicle body 8 via the base material 2 and the adhesives 3 and 4 on both sides of the base material 2.

In the state of being adhered to the vehicle body 8, the plasticizer P contained in the molding 7 moves from the inside to the outside as shown by the arrow with the passage of time, and further, the front base The pressure-sensitive adhesive 3 applied to the one surface of the material 2 is transferred. However, the base material 2 coated with this adhesive 3
In that case, as mentioned above, it consists of a urethane film,
It is impermeable to the plasticizer P. Therefore, the plasticizer P that has migrated from the inside of the molding 7 is prevented from permeating by the base material 2 and does not migrate to between the vehicle body 8 and the adhesive 4 on the other side. Therefore, even if the period elapses, the plasticizer P does not stay and accumulate between the adhesive 4 and the vehicle body 8, and due to the staying and accumulation of the plasticizer P, the adhesive performance of the adhesive 4 to the vehicle body 8 is increased. Does not decrease. Therefore, the molding 7 can be reliably fixed to the vehicle body 8 over a long period of time.

[0012]

As described above, according to the present invention, a pressure-sensitive adhesive is applied to both sides of a base material made of a film having impermeability to a plasticizer contained in a member molded of synthetic resin. It was configured to do. Therefore, the base material blocks the plasticizer transferred from the member molded with the synthetic resin, and the plasticizer stays and accumulates between the adhesive and the target surface to which the member molded with the synthetic resin is attached. It is possible to eliminate the occurrence of the phenomenon. Therefore, it is possible to prevent the decrease in the adhesiveness due to this and improve the sticking durability of the member such as the molding formed of the synthetic resin.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view of a state in which the molding is stuck to the molding of the same example.

FIG. 3 is a schematic cross-sectional view showing a state in which the molding is attached to a vehicle body.

FIG. 4 is a schematic cross-sectional view showing a conventional double-sided adhesive tape.

FIG. 5 is a schematic cross-sectional view showing a process of attaching a molding using the double-sided adhesive tape.

FIG. 6 is a schematic cross-sectional view showing an accumulated state of a plasticizer.

[Explanation of symbols]

 1 Double-sided adhesive tape 2 Base material 3,4 Adhesive 7 Mall

Claims (1)

[Claims] 1. A film-shaped base material having impermeability to a plasticizer contained in a member molded of a synthetic resin, and an adhesive applied to both surfaces of the base material. Double-sided adhesive tape for synthetic resin members, characterized by: