JPH0664658A - Method for protecting coated surface of vehicle - Google Patents

Abstract

(57) [Summary] [Purpose] The protective sheet applied to the painted surface of automobiles at the time of shipment should not be separated from the painted surface during transportation of automobiles. [Structure] Removable adhesive 9 is applied to the painted surface 8 of an automobile.
The plurality of protective sheets 4a and 4b coated with are protected by being attached to the surface 8 with the adhesive 9 in contact with each other. A seam reinforcing sheet having a strong adhesive 11 having a larger adhesive strength than the adhesive 9 is attached to the seam portion 6 of the adjacent protective sheets 4a and 4b so as to straddle these protective sheets. At the portion where the coated surface is connected to the glass surface, the seam reinforcing sheet is attached by straddling the glass surface and the protective sheet attached to the coated surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of protecting a coated surface from damage during transportation of a finished automobile from a factory to a customer.

[0002]

2. Description of the Related Art Conventionally, when a completed automobile is transported from a factory to a customer, a rust preventive wax is applied to the surface of the automobile in order to protect the coated surface from wind, rain, sand dust, sea breeze, and the like during transportation. This rust preventive wax is removed when the car is handed over to the purchaser, but it requires a lot of cost because the cleaning work for this purpose takes time and the used cleaning water must be filtered to prevent pollution. did.

Therefore, in recent years, it has been started to transport automobiles by attaching a protective sheet on the coated surface.
This protective sheet is coated on one surface with a removable adhesive, that is, an adhesive that can be easily peeled off after application, and is attached to the painted surface of an automobile through this adhesive.

At the time of application, the protective sheet is pulled out from a roll in which the long protective sheet is wound, cut into a predetermined length, and attached to a coated surface. This protective sheet is used as a protective material until the completed vehicle is delivered as described above, and it is desired that the price is low and the handling is easy. Therefore, the roll is a release paper between each layer of the protective sheet. The sheets are wound directly on top of each other without sandwiching the sheet, and the back surface of the sheet not coated with the pressure-sensitive adhesive is in contact with the pressure-sensitive adhesive of the sheet portion wound on the outside thereof.

Therefore, in order to easily pull out the protective sheet from such a roll and also to easily peel off the protective sheet attached to the coated surface, the pressure-sensitive adhesives have different adhesive strengths. The smaller ones are selected.

Further, the protective sheet cut into the predetermined length is attached to the surface of the coating while expelling air from one end to the other end, and if the protective sheet is large,
Since it is difficult to expel this air when it is entrained during application, it is formed into a strip with a relatively narrow width of, for example, 500 mm to 600 mm. It is applied in sequence while forming a seam.

[0007]

[PROBLEMS TO BE SOLVED] As described above, since the protective sheet used for protecting the painted surface has a relatively small adhesive force, and such protective sheets are sequentially attached while forming a joint with each other, the automobile is If a strong wind hits during transportation,
The protective sheet may peel off from the seam portion or the edge portion of the protective sheet at the boundary between the coated surface and the glass surface.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and in the present invention, the painted surface of an automobile is protected by a plurality of protective agents coated with a removable adhesive. In a method for protecting a surface of an automobile coating, in which a sheet is protected by adhering the end to end and adhering to the surface via the pressure-sensitive adhesive, in a joint portion between adjacent protective sheets, the protective sheet is spread over these protective sheets. Then, a seam reinforcing sheet having a larger adhesive strength than the adhesive is attached.

According to the present invention, since the adjacent protective sheets are strongly connected to each other by the seam reinforcing sheet at the seam portion, the edge of each protective sheet in the seam portion is rolled up by wind to protect them. The sheet does not peel off from the painted surface, and the painted surface can be reliably protected.

Since the above-mentioned protective sheet is discarded after use, it is necessary to indicate the material of the protective sheet in order to prevent pollution at that time. Generally, the protective sheet is marked by printing or the like. It is difficult in terms of cost. However, according to the present invention, by using a material having a printability as the seam reinforcing sheet, and printing the necessary information such as the material name of the protective sheet, the handling method, the company name, and the manufacturing symbol on the upper surface of the seam reinforcing sheet, The purpose of display can be reached at a lower cost than printing on a sheet.

At the portion where the coated surface is connected to the glass surface, the same protective sheet as the above is attached by straddling the glass surface and the protective sheet attached to the coated surface to protect the portion. It is possible to prevent the protective sheet from peeling off from the edge portion of the sheet.

[0012]

EXAMPLES Hereinafter, the present invention will be described with reference to an illustrated example. FIG. 1 is a top view of an automobile 1 and a front glass 2
A coating is applied to all outer surfaces except the glass surface 2 such as a, the rear glass 2b, and the door glass 2c. When the finished vehicle is shipped, a protective sheet for protecting it is attached to the coated surface, and the finished vehicle is transported in this state.

For example, when the above-mentioned protective sheet is stuck on the hood 3 of the automobile 1, the protective sheet 4 is pulled out from the roll 5 around which the protective sheet 4 is wound, cut with a cutter according to the width of the vehicle body, and first, Cut-off protection sheet 4a
One end of the bonnet 3 is attached to one side of the bonnet 3, and thereafter, the air between the protective sheet 4a and the hood 3 is expelled by a squeegee, and the bonnet is attached to the bonnet 3 toward the opposite side. If the width of the protective sheet 4 is too wide, it is difficult to expel it when air is entrapped during pasting, so the protective sheet 4 is formed with an appropriate width of, for example, about 500 mm to 600 mm. The next protection sheet 4b, which is similarly cut off, is attached to the front portion of the protection sheet 4a so as to partially overlap with each other, and thus the plurality of protection sheets 4a, 4
The entire surface of the hood 3 is covered by b--. Then, a seam portion 6 is formed between the adjacent protective sheets 4 so as to overlap each other.

FIG. 3 is a sectional view of the joint portion 6 between the protective sheets 4a and 4b, which corresponds to the sectional view taken along the line III--III in FIG. 7 is a panel of the bonnet 3, the surface of which has a coating 8. Adhesive 9 is provided on one surface of the protective sheets 4a and 4b.
Is applied, and the protective sheets 4a and 4b are adhered to the surface of the coating 8 by the adhesive 9. Moreover, the seam part 6
In the above, the protective sheet 4b is attached by the adhesive 9 to the back surface of the protective sheet 4a on which the adhesive 9 is not applied.

The protective sheet 4 before being cut is wound around a roll 5 with the adhesive 9 inside, as shown in FIG.
In order to simplify the drawing operation and reduce the price, the release paper is not sandwiched between the sheet layers in the roll 5, and the back surface of the protective sheet 4 on which the adhesive 9 is not applied is wound on the outside thereof. Is in contact with the adhesive 9.
Therefore, in order to reduce the force required to pull out the protective sheet 4 from the roll 5, it is desired that the adhesive force of the adhesive 9 on the sheet back surface is small. Originally, the adhesive 9 is for sticking the protective sheet 4 to the coated surface only during the transportation of the vehicle so that the protective sheet 4 can be peeled off from the coated surface without any trouble at the start of use of the vehicle. As described above, reducing the adhesive force to the back surface of the sheet is compatible with the original purpose of the adhesive 9.

As the adhesive 9, generally, an adhesive having an adhesion of 300 to 800 g / 25 mm to the coated surface and a peeling strength of 50 to 100 g / 25 mm to the back surface of the protective sheet 4 is selected. When the protective sheet 4 is peeled off from the painted surface, the adhesive 9
It is desirable that the base material of the protective sheet 4 be sufficiently anchored before application of the pressure-sensitive adhesive 9 so as not to remain on the surface. Moreover, you may perform a peeling process on the back surface of the protective sheet 4 depending on the case.

As the protective sheet 4, a material having a large breaking elongation is used so that it can be well adapted to the outer shape of the vehicle body. For example, the breaking tensile strength in the winding direction is 56 N / 25 mm and the elongation is 70.
A polyethylene sheet with 0%, breaking strength in the width direction of 30 N / 25 mm and elongation of 730% is used.

As described above, since the adhesive force of the adhesive 9 to the surface of the coating 8 and the back surface of the protective sheet 4 is not so strong, the surface of the coating 8 is protected by the protective sheet 4 as shown in FIG.
When the automobile is transported with a and 4b attached via the adhesive 9, if a strong wind hits the joint portion 6 as indicated by an arrow w during transportation, the protective sheet 4b is removed from the protective sheet 4a at that portion. Peeling off, and then the main body of the protective sheet 4b is likely to peel off from the surface of the coating 8. Even if the protective sheet 4b is provided so as to cover the protective sheet 4a from the front of the vehicle body, the automobile 1 may be loaded backward on the automobile carrier during transportation,
In this case, since wind is received from the rear of the vehicle body, it is unavoidable that the peeling starts from the joint portion 6 as described above.

Therefore, in this embodiment, as shown in FIG. 4, the seam reinforcement is performed by straddling the back surface of the protective sheet 4b in the seam portion 6 and the back surface of the protection sheet 4a adjacent to the seam portion 6. Attach the sheet 10. On one surface of the seam reinforcing sheet 10, a strong adhesive different from the adhesive 9 is used.
11 is applied, the seam reinforcing sheet 10 is this strong adhesive
It is affixed to the back surface of the protective sheets 4a and 4b via 11.

The adhesive force of the strong adhesive 11 to the back surface of the protective sheet 4 is much larger than that of the adhesive 9, and the peel strength of the adhesive 9 is 50 to 100 g / 25 mm as described above. The peel strength of the strong adhesive 11 is, for example, 300 to 700 g /
It is about 25 mm. Therefore, the seam reinforcing sheet 10 is not peeled off from the back surface of the protective sheets 4a and 4b even if a strong wind is applied during transportation of the vehicle, and the protective sheets 4a and 4b are held in the joined state at the seam portion 6, so that the seam portion 6 is joined. Is not peeled off to cause peeling of the protective sheets 4a and 4b from the coated surface.

For the purpose of the seam reinforcing sheet 10, it is required that the breaking strength is large and the elongation is small. For example, the breaking strength in the winding direction is 100 N / 25 mm, the elongation is about 10%, and the breaking strength in the width direction is 180 N. A material of / 25mm and an elongation of about 13% is used.

Further, as the material of the seam reinforcing sheet 10,
A polypropylene film or polyethylene cloth that is suitable for printing is selected, and the protective sheet 4,
Protective sheet 4 by printing necessary information such as material name of seam reinforcing sheet 10, handling method, company name, manufacturing code
You can reach the purpose of display at a lower cost than printing on. In FIG. 4, reference numeral 12 indicates a printed display.

The seam reinforcement sheet 10 may be applied over the entire length of the seam portion 6 or a portion thereof, for example about two-thirds the length.

In the above embodiment, the seam portion 6 is formed by simply stacking the end portions of the protective sheet 4a and the protective sheet 4b vertically, but instead of this, as shown in FIG. At the ends, the adhesive 9 of the protective sheet 4a and the adhesive 9 of the protective sheet 4b are made to face each other so that they adhere to each other, and the ends of the protective sheets 4a and 4b joined in this way are protected by the protective sheet. The seam portion 6 may be formed by folding on the back surface of 4a. By doing so, the peel strength of the seam portion 6 is increased.

Although the protective sheets 4a and 4b which are attached to the hood 3 of the automobile 1 so as to be adjacent to each other have been described above, a plurality of protective sheets 4 are attached to other coated surfaces in the same manner. However, since these protective sheets 4 are not attached to the above-mentioned glass surface 2, each glass surface 2
The edge of the protective sheet 4 directly faces the peripheral edge of the sheet.

In FIG. 1, reference numeral 4c designates a protective sheet attached on the roof of the automobile 1. The front edge of the protective sheet 4c faces the upper end of the front glass 2a. By the way, since the adhesive force of the adhesive 9 to the glass surface is smaller than the adhesive force to the coated surface, the protective sheet 4c is very easily peeled off from the front edge portion by the wind.

Therefore, as shown in FIGS. 1 and 6, a seam reinforcing sheet similar to the above is provided on the front surface of the front glass 2a and the back surface of the protective sheet 4c across the front edge of the protective sheet 4c.
10 is pasted. Strong adhesive 11 for seam reinforcing sheet 10
Since the adhesive force of the protective sheet 4c to the back surface and the glass surface of the protective sheet 4c is much larger than the adhesive force of the adhesive 9 of the protective sheet 4c to the coating 8 and the glass surface, the seam reinforcing sheet 10 is not peeled off by wind, and The peeling of the protective sheet 4c is prevented by the seam reinforcing sheet 10.

As shown in FIG. 1, the seam reinforcing sheet 10 may be a relatively short one which is attached to each of the front end edges of the protective sheet 4c in a direction crossing the edge, or a relatively long one. It may be attached along the edge. All other portions where the edge of the protective sheet faces the glass surface are treated in the same manner.

[0029]

According to the present invention, the protective sheet for protecting the coated surface of the automobile does not peel off from the coated surface due to wind or the like during transportation of the automobile, and the coated surface can be reliably protected.

By printing the necessary items on the seam reinforcing sheet, the required display can be made at low cost.

[Brief description of drawings]

1 is a top view of an automobile for explaining the method of the present invention. FIG.

FIG. 2 is a cross-sectional view showing a roll of a protective sheet.

FIG. 3 is a detailed cross-sectional view taken along the line III-III in FIG.

FIG. 4 is a sectional view similar to FIG. 3, showing a state where a joint reinforcing sheet is attached to a joint portion of a protective sheet.

5 is a sectional view similar to FIG. 4, showing another embodiment.

6 is a detailed sectional view taken along the line VI-VI of FIG.

[Explanation of symbols]

1 ... Automotive, 2 ... Glass surface, 3 ... Bonnet, 4 ... Protective sheet, 5 ... Roll, 6 ... Seam part, 7 ... Panel, 8 ...
Painting, 9 ... Adhesive, 10 ... Seam reinforcement sheet, 11 ... Strong adhesive, 12 ... Printing indication.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hitoshi Sakashita 2-2 Kandatamachi, Chiyoda-ku, Tokyo Within Lintec Co., Ltd. (72) Inventor Yoshio Hirano 27-33 Matsukaze-cho, Hiratsuka-shi, Kanagawa

Claims (2)

[Claims] 1. An automobile coating which protects the coating surface of an automobile by applying a plurality of protective sheets coated with a removable pressure-sensitive adhesive at the end portions of the protective sheet in contact with each other via the pressure-sensitive adhesive. In the surface protection method, a seam reinforcement sheet having an adhesive strength larger than that of the pressure-sensitive adhesive is attached to a seam portion between adjacent protection sheets so as to extend over these protection sheets. Method. 2. A method for protecting a painted surface of an automobile, which comprises protecting a painted surface of an automobile by attaching a protective sheet coated with a removable adhesive to the surface via the adhesive, wherein the painted surface is glass. An automotive coating, characterized in that a seam reinforcing sheet having an adhesive strength greater than that of the adhesive is pasted across the glass surface and the protective sheet pasted on the painted surface at a portion connected to the surface. Surface protection method.