JPH05237937A - Method for sticking protective adhesive film - Google Patents

Abstract

PURPOSE:To easily remove an unnecessary part without damaging the surface of the coated material by sticking a temporary protective adhesive film for coating and thereafter heating the unnecessary part at the melting teperature or above of the film, cutting the unnecessary part, sucking and removing the cut part. CONSTITUTION:A temporary protective adhesive film (d) for coating is stuck to the coated outside plate (b) of an automobile and a washer nozzle part (c). The film (d) is pushed by a roller or the like and stuck in a tent-shape. Then the unnecessary part (h) of the film (d) is heated at the melting temperature or above by a ringlike cutter (f), a bandlike heater (g) and a pressing matter (e) and cut by a cutting edge (f). The unnecessary part is sucked and removed. The adhesive film (d) is formed of base material such as paper and a pressure sensitive adhesive layer of vinyl-based resin or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for attaching a protective adhesive film.

[0002]

2. Description of the Related Art Conventionally, when a coated object such as an automobile is transported to a user's hand or is temporarily stored indoors or outdoors, dust, iron powder, rain (acid rain), salt, etc. Since, due to the influence of sun rays, etc., defects such as scratches, stains, discoloration, and pollution will occur on the surface of the coated object, a method of temporarily protecting the surface of the coated object by attaching a protective adhesive film to the surface of the coated object is considered. ing.

The protective adhesive film is applied by pressing the film evenly on the outer panel of an automobile by using a roller, a squeegee, or the like, and at a place where the coating of the protective adhesive film is unnecessary (for example, a protruding portion such as a washer nozzle). ) Is performed by cutting off only that part with a cutter knife.

However, in the construction, when the protective adhesive film is cut off with a cutter knife, the coating film on the outer panel of the automobile is scratched by the cutter knife, which lowers the commercial value and also lowers the durability of the coating film. There was a flaw.

[0005]

Means for Solving the Problems As a result of intensive studies to solve the above-mentioned problems, the present inventors have found that unnecessary portions of the protective pressure-sensitive adhesive film are heated to a temperature above the melting temperature of the protective pressure-sensitive adhesive film. By performing warm cutting and sucking and removing the cut protective adhesive film, the protective adhesive film can be removed without damaging the coating film, and the present invention has been completed.

That is, the present invention relates to a method for attaching a coating film temporary protective pressure-sensitive adhesive film, which comprises applying a coating film temporary protective pressure-sensitive adhesive film to a coated article, and then removing unnecessary portions of the applied protective pressure-sensitive adhesive film. The present invention relates to a method for sticking a protective pressure-sensitive adhesive film, in which the film is heated to a temperature at which the film melts or higher and cut, and the cut protective pressure-sensitive adhesive film is sucked and removed.

Next, the method of the present invention will be described with reference to the drawings. It should be noted that the drawing is an embodiment and is not limited to this.

The coated article used in the present invention is not particularly limited, but a coated outer panel of an automobile body is particularly preferable. Hereinafter, an example in which a car body is used as a coated article will be described.

FIG. 1 is a schematic sectional view of an automobile coating outer plate and a washer nozzle portion. 1A shows a steel material of an automobile body, FIG. 1B shows a coating film, and FIG. 1C shows a washer nozzle portion.

FIG. 2 is a schematic cross-sectional view of a film in which a coating film temporary protective pressure-sensitive adhesive film (d) is attached to an automobile coating outer plate and a washer nozzle portion.

The protective pressure-sensitive adhesive film (d) has a base material and a pressure-sensitive adhesive layer as essential components, and a conventionally known pressure-sensitive adhesive film can be used.

The base material constituting the protective pressure-sensitive adhesive film (d) is not particularly limited, but is made of fibers such as paper, cloth and non-woven fabric; and is made of plastics such as polyvinyl chloride, polyethylene, polypropylene and polyester. A film or sheet made of a metal such as aluminum. Usually, the thickness of the substrate is preferably in the range of about 40 μm or more. The component constituting the pressure-sensitive adhesive layer is not particularly limited, and conventionally known vinyl resins, polyester resins, alkyd resins, silicone resins, natural rubber resins, synthetic rubber resins and these, for example. Examples of modified resins include The thickness of the protective adhesive film (d) is about 100 μm or less, preferably about 5 to 5
The range of 0 μm is desirable.

The protective pressure-sensitive adhesive film (d) is laminated on the entire surface of an automobile coating outer plate (bonnet or the like) so that the pressure-sensitive adhesive layer of the protective pressure-sensitive adhesive film (d) is in contact with the surface of the outer plate, and then the protective pressure-sensitive adhesive film (d). The substrate can be coated by pressing it from the surface of the substrate with a tool such as a roller or a squeegee. Further, the protective pressure-sensitive adhesive film (d) on the covered washer nozzle portion is raised and has a tent shape.

FIG. 3 is a schematic sectional view of a protective adhesive film coated on the washer nozzle portion and a cylindrical device for removing the protective adhesive film. The device is a cutter (ring-shaped) blade (f) for cutting the protective adhesive film, a heater (strip-shaped) (g) and a pressing tool (cylindrical) (e) for raising the temperature of the cutter blade (f). Can be used. It is desirable to use an elastic heat insulating material (e.g., rubber) as the material of the retainer (e). When the retainer (e) projects in the direction parallel to the central axis of the cylinder as compared to the cutter blade (f), the cutter blade (f) does not damage the coating film and the remaining protective adhesive film that is cut Is preferred because it has the advantage that it is pressure-bonded to the coating film and the adhesion between the two is improved.

FIG. 4 is a schematic sectional view of an unnecessary portion of the protective pressure-sensitive adhesive film coated on the washer nozzle portion cut by a cylindrical instrument.

When performing cutting, it is desirable that the temperature of the cutter blade (f) be higher than the melting temperature of the protective adhesive film. The temperature varies depending on the type of the protective pressure-sensitive adhesive film, but is generally about 100 ° C or higher, preferably about 130 to 200 ° C.

The protective adhesive film piece (h) cut and cut is automatically recovered by a decompression hose.

[0018]

The method of applying the protective pressure-sensitive adhesive film of the present invention comprises:
Compared with the conventional method, the protective adhesive film on unnecessary parts can be removed without damaging the coating film on the surface of the painted object, the work time for removing the protective adhesive film can be significantly shortened, and after removal The protective adhesive film of can firmly adhere to the coating film on the surface of the coated object, so it can prevent the invasion of contaminants from the outside and exhibits an excellent effect that a protective adhesive film with a good protective function can be obtained. To do.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a coated object.

FIG. 2 is a schematic cross-sectional view in which a coating film temporary protective pressure-sensitive adhesive film is attached to a coated object.

FIG. 3 is a schematic cross-sectional view before cutting the coating film temporary protection adhesive film.

FIG. 4 is a schematic cross-sectional view after cutting the coating film temporary protection adhesive film.

[Explanation of symbols]

a steel material b coating film c washer nozzle part d coating film temporary protection adhesive film e pressing tool f cutter blade g heater h cut coating film temporary protection adhesive film piece arrow indicates that the cut coating film temporary protection adhesive film piece is depressurized Indicates the direction of collection by.

Claims (1)

[Claims] 1. A method for applying a temporary protective film for a coating film, which comprises applying a temporary protective film for a coating film to a coated object, and then melting unnecessary portions of the protective film for adhesion. A method for attaching a protective pressure-sensitive adhesive film, which comprises warming to a temperature or higher to perform cutting, and suctioning and removing the cut protective pressure-sensitive adhesive film.