JPH02203007A - Corrosion preventive material and treatment method of the same for vehicle - Google Patents

Abstract

PURPOSE:To facilitate the demounting of two parts and prevent the generation of corrosion preventive deterioration by abutting a first corrosion preventive material against one part and a second corrosion preventive material against the other, and providing a peeling layer whose adhesive force is comparatively weak between both the corrosion preventive material layer. CONSTITUTION:A ring-like seat face corrosion preventive material 13 is arranged between a food ledge part 11 and a front fender part 12. The seat face corrosion preventive material is composed of a first corrosion preventive layer made from butyl rubber or the like, and a peeling layer made from polyethylene setting film or the like excellent in non-viscosity and non-adhesiveness and to be laminated on the first corrosion preventive layer, and a second corrosion preventive layer to be laminated on the peel layer and made from butyl rubber or the like. After assembling the above- mentioned parts, a coating process, that is, an corrosion preventive process is performed. In a coating/baking process, the first corrosion preventive material layer is fused or adhered to the part 11, and the second corrosion preventive material layer to the part 12. Corrosion preventive deterioration is not generated even when the parts is demounted, and also the demounting is easily carried out.

Description

Detailed Description of the Invention (Field of Industrial Application) This invention relates to a rust preventive material for a vehicle that is interposed between two articles that are removably fastened using a fastener such as a bolt, and The present invention relates to a rust prevention treatment method for a vehicle that performs rust prevention treatment using the present invention.

(Prior Art) In recent years, in order to maintain the beauty of a car body for a long period of time, there has been an increasing demand for a rust preventive treatment for car bodies that does not cause rust prevention deterioration over a long period of time.

Generally, rust prevention treatment is carried out after the car body is assembled, and this rust prevention treatment is carried out, for example, by performing zinc chemical conversion treatment after degreasing the car body, followed by electrodeposition painting and baking.

By the way, when two parts are fastened together with bolts or the like, there is not enough clearance between the contact surfaces of the parts, so there will be a problem if rust prevention treatment is not performed sufficiently. For this reason,
Conventionally, a seat rust preventive material made of butyl rubber or epoxy resin was interposed between the parts to form the necessary gap, and the contact surface of the seat rust preventive material was rust-proofed with the rust preventive material. We have tried to solve this problem and prevent rust prevention from deteriorating over a long period of time.

For example, as shown in FIG.
A ring-shaped seat surface rust preventive material 4 is interposed between the hood ledge 2 and the front fender 3 to form a predetermined gap between the hood ledge 2 and the front fender 3 for rust prevention treatment. Then, at the time of baking for this rust prevention treatment, the contact surface of the seat surface rust preventive material 4 is rust-proofed by the seat surface rust preventive material 4. That is, if the seat rust preventive material 4 is made of butyl rubber, the seat rust preventive material 4 will be softened and fused by heat treatment, and if it is made of epoxy resin, it will be thermoset bonded and the contact surface will become rust preventive. It is something that will be done.

Note that 5 is a washer and 6 is a weld nut fixed to the hood ledge 2.

(Problem to be Solved by the Invention) However, in the above-mentioned seat rust preventive material, since the hood ledge 2 and the front fender 3 are bonded together,
When removing parts for repairs or the like, there is a problem in that the front fender 3 cannot be easily removed from the hood ledge 2 even if the bolts 1 are removed. Furthermore, when the front fender 3 is removed, the fused or hardened seat rust preventive material 4 is peeled off from the front fender 3 and the hood ledge 2, exposing the untreated rust preventive surface, and the front fender 3 is removed again. Even when assembled to the hood ledge 2, a portion of the untreated surface of the hood ledge may remain exposed, resulting in a problem of deterioration of the rust prevention.

(Purpose) This invention has been made in view of the above-mentioned problems, and its purpose is to provide a vehicle in which parts can be easily removed and the parts will not deteriorate due to rust even if the parts are removed. An object of the present invention is to provide a rust preventive material for vehicles and a rust preventive treatment method for vehicles.

<Means for Solving the Problems> In order to achieve the above object, the present invention provides a rust preventive material that is interposed at a fastening point between two articles that are removably fastened by a fastener, the rust preventive material comprising: The material includes a first rust preventive material layer that comes into contact with one of the articles;
Compare a second rust preventive material layer that comes into contact with the other article, and a first rust preventive material layer and a second rust preventive material layer provided between the first steel preventive material layer and the second rust preventive material layer. It is composed of a release layer that adheres with a weak adhesive force.

Further, a first rust preventive material layer that comes into contact with one article, a second rust preventive material layer that comes into contact with the other article, and a layer provided between the first rust preventive material layer and the second rust preventive material layer are provided. A rust-preventive material consisting of a peeling layer that adheres a first rust-preventive material layer and a second rust-preventive material layer with a relatively weak adhesive force is applied between two articles that are removably fastened by a fastener. After the articles are interposed at the fastening points and the fasteners are used to fasten the fastening points, the articles are subjected to rust prevention treatment.

(Function) Since the rust preventive material is composed of a first rust preventive material layer, a peeling layer, and a second rust preventive material layer, when baking for rust preventive treatment, the first. The second rust preventive layer is fused or cured to each article, and when the article is removed, the rust preventive material is easily peeled off from the release layer.

(Example) Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is an explanatory diagram showing how the seat rust preventive material according to the present invention is installed. In the figure, 11 is the hood ledge (parts) of the vehicle body, 12 is the front fender (parts),
13 is a ring-shaped seat surface rust preventive material interposed between the hood ledge 11 and the front fender 12;
As shown in the figure, a first rust preventive material M13a made of butyl rubber or the like as in the past, a release layer 13b laminated on this first mackerel preventive material layer 13a, and butyl rubber etc. laminated on this release layer 13b. A second rust-preventing material layer 13c is formed.

The release layer 13b is made of a cured polyethylene film, a Teflon film, etc. that has excellent non-adhesive and non-adhesive properties, and the first rust preventive material layer 13a and the second rust preventive material layer 13c are separated from each other by the release layer 131). They are bonded together with a relatively weak force through the wafer.

Furthermore, the fastening surface 11a of the hood ledge 11 and the fastening surface 12a of the front fender 12 are removably fastened by bolts 14. 15 is a weld nut fixed to the hood ledge 11, and 16 is a washer.

The order for assembling these is to first install the hood ledge 1.
Place the seat rust preventive material 13 at a predetermined position on the fastening surface 11a of 1,
Next, the fastening surface 12a of the front fender 12 is placed on the seat rust preventive material 13, and a washer 16 is placed on the contact surface.
Then, the hood ledge 11 and front fender 12 are assembled using bolts 14 shown in FIG.

After this assembly is completed, the painting process (rust prevention treatment) begins in the same way as before. Namely, degreasing, zinc phosphate chemical treatment,
Electrodeposition painting and baking are performed. This baking may occur when the first rust preventive material layer 13a is attached to the fastening surface 11 of the hood ledge 11.
The second rust preventive material layer 13c is fused or adhered to the fastening surface 12a of the front fender 12.

When the parts are to be removed after this painting process is completed, the bolts 14 are first removed, and then the front fender 12 is removed from the hood ledge 11.

By the way, the seat rust preventive material 13 is provided with a peeling layer 13b made of a polyethylene hardened film or the like as an intermediate layer, and baking sometimes occurs between the peeling layer 13b and the first layer. Second mackerel-proof material layer 13a, 1
3c, so when removing it, the rust preventive material 13 is peeled off 11111 as shown in FIG.
3c and the first rust preventive material layer 13a, or from the interface between the release layer 13b and the second rust preventive material layer 13c. For this reason, the first rust preventive material layer 13a
remains fused or bonded to the fastening surface 11a of the hood ledge 11, and the second rust preventive material layer 13c remains fused or bonded to the fastening surface 12a of the front fender 12. In addition, the peeling layer 13b is the first and second mackerel-proofing material layers 1.
It remains adhered to either one of 3a and 13c.

In this way, the first. Since the second rust preventive material layers 13a and 13c are not peeled off, the fastening surface 11a of the hood ledge 11 and the fastening surface 12m of the front fender 12 are not exposed and rust prevention does not deteriorate. Also,
The peeling can be done with a small force, so when removing the hood ledge 11 and front fender 1,
2 will not be deformed.

FIG. 4 shows a second embodiment, in which the release layer 13d is made of a vinyl chloride resin containing a large amount of extender pigment such as calcium carbonate so as to be resistant to mechanical damage. This is from the hood ledge 11 to the front fender.
When removing the hood ledge 12, the peeling layer 13d undergoes cohesive failure, and this cohesive failure causes the first and second rust preventive material layers 13a, 13c to break apart from the hood ledge 11. This is to prevent it from peeling off from the front fender 12. The peeling layer 13d that has undergone cohesive failure is 2
Separate into 1st. It will remain in a laminated state on the second rust preventive material layers 13a and 13c.

By the way, the seat rust preventive material 13 has a three-layer structure, and since the intermediate layer, such as a cured polyethylene film, is generally hard, the first layer is soft. Second rust preventive material layer 13a, 13c
This has the effect of preventing deformation of the rust preventive material 13, and prevents the rust preventive material 13 from being deformed during manufacturing, distribution, and installation operations, thereby preventing it from becoming a defective product.

<Effects> As explained above, according to the present invention, even if a part is removed, the rust prevention does not deteriorate, and the part can be easily removed, and the part will not be damaged at the time of removal. It has the advantage of not being deformed.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the state of assembly of the hood ledge and front fender using the anti-corrosion material according to the present invention, Fig. 2 is a schematic explanatory drawing for explaining the assembly order, and Fig. 3 is An explanatory diagram when the front fender is removed from the hood ledge, Fig. 4 is an explanatory diagram of the second embodiment, and Fig. 5 is an explanatory diagram showing the assembled state of the conventional hood ledge and front fender. . 11... Hood ledge 12... Front fender 13... Seat surface rust preventive material 13a... First rust preventive material layer 13b, 13d... Peeling layer 13c... Second rust preventive material layer 14...Bolt evil cause 11...Zu-Y Ray Iji 12...Maron Ref 1 Under 13...IQ heavy second funeral 13a...Enemy 1 No. #11 North Togaya 13b...411 Section 13c...l! P2 special 1σ eyebrow 14...S rule

Claims (2)

[Claims] (1) A rust preventive material that is interposed at a fastening point between two articles that are removably fastened by a fastener, the rust preventive material having a first rust preventive material layer that comes into contact with one of the articles;
a second rust preventive material layer that contacts the other article; and a first rust preventive material layer and a second rust preventive material layer provided between the first rust preventive material layer and the second rust preventive material layer;
A rust preventive material for a vehicle, comprising a peeling layer that adheres to a rust preventive material layer with a relatively weak adhesive force. (2) A first rust preventive material layer that comes into contact with one article, a second rust preventive material layer that comes into contact with the other article, and a second rust preventive material layer that comes into contact with the first rust preventive material layer.
The rust preventive material, which is composed of a peeling layer provided between the rust preventive material layer and a peeling layer that adheres the first rust preventive material layer and the second rust preventive material layer with a relatively weak adhesive force, is attached and detached using a fastener. 1. A rust prevention treatment method for a vehicle, which comprises interposing a fastening part between two articles that can be fastened together and fastening the fastening part with a fastener, and then subjecting the articles to rust prevention treatment.