JPH0675703B2 - Matte paint lacquer repair method and lacquer repair paint for matte paint - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for repairing a matte coating portion applied to an automobile or the like and a coating material directly used for carrying out the method.

(Prior Art) Generally, it is of course preferable to repair a painted surface of an automobile or the like from the viewpoint of durability of a coating film, but
For example, a lacquer repair is often performed according to the customer's request even on a difficult-to-baked portion such as a roof of a large truck or a sash of a passenger car, or on a painted surface that can be repaired by baking. On the other hand, as is well known among coating engineers, partial repair of a matte coating surface of an automobile or the like, which places importance on appearance, has been conventionally extremely difficult, whether by bake repair or lacquer repair. Matte paint is a clear ordinarily transparent or semi-transparent resin, a pigment for expressing a desired color, and a matting agent (flat base).
As a pigment (for example, carbon white) composed of large particles of 10 to 40 μ, and if necessary, an additive such as a stabilizer is added and uniformly dispersed and mixed using a solvent. When spraying the repair area with a lacquer repair paint of substantially the same color to repair a part of the painted surface coated with matte paint, the attached drawing (as an example, the door of a truck is shown) The repair paint is unavoidably applied to the sound paint surface 12 around the repair part indicated by reference numeral 10 in the above, and a double matte paint film is formed on this part, so that chalk powder is also present. An annular dust portion 14 that appears to have adhered is generated, and the appearance is significantly impaired. For this reason, if a car, etc., whose appearance is valued, has a matte coating, and the painted surface needs to be repaired, partial repair is not performed.For example, the door, fender panel, etc. must be completely replaced. However, the repair cost is extremely high, and on the contrary, the difficulty of the partial repair is the main cause of hindering the spread of the matte coating to automobiles.

(Problems to be Solved by the Invention) As described above, in the case of performing partial lacquer repair on the matte coating surface, the dust part generated around the repair part is eliminated, or at least the appearance is not damaged. It is a problem to be solved by the present invention.

(Means for Solving the Problems) The present invention has been devised in view of the above, and a matte paint toned in the same color as the repaired part is used, and 5 to 20% of clear and 3
The first step of spray painting the lacquer repair paint recolored by adding 10 to 10% of flat base, and the matte clear made by adding 15 to 30% of flat base to clear. 5 to 30 for thinner lacquer
%, And a second step of spray-painting the blurring liquid made by adding the dust solution on the dust portion formed around the repair portion by the coating of the first step, and A lacquer paint for exclusive use for directly carrying out the above-mentioned repair method, in which 5 to 20% of clear and 3 to 10% of flat base is added to the matte paint toned in the same color as the repair part. The present invention provides a lacquer repair paint for matte coating, which is characterized by being re-colored.

(Examples) Examples of the present invention will be described in detail below. First, a lacquer repair paint, which will be described in detail later, is spray-painted on the repair part 10 illustrated in the accompanying drawings, and then a dusting liquid, which will be described later, is spray-painted on the surrounding dust part 14 to naturally dry it. The above lacquer repair paint is a non-repaired part that has already been matt painted
Based on a matt lacquer paint toned in substantially the same color as 12, to which 5% to 20% clear and 5% to
It is manufactured by adding 10% flat base (matting agent), mixing it uniformly, and re-coloring.

At this time, the amount of clear is increased or decreased in the range of 5% to 20% depending on the gloss value (indicating the degree of gloss) of the non-repaired portion 12,
Generally, the amount is small when the gloss value is small (that is, the gloss is small), and conversely, it is increased when the gloss value is large (that is, the gloss is large), but about 10% is suitable for the matte coating in ordinary automobiles. Is. In addition, the above flat base,
It is preferable to use carbon white of several μ to 20 μ, and the addition amount is 3 depending on the gloss value of the unrepaired portion 12.
Increase or decrease in the range of 10% to 10%. When the gross value is extremely small, the amount is close to this with 10% as the upper limit, and with the increase of the gross value, the addition amount is increased or decreased according to the gross value with the lower limit of 3%. About 5% is suitable for matte coating in ordinary automobiles. Next, 15% to 30% of a flat base is added to the clearing liquid to make a matte clear, and this matte clear is added to a lacquer thinner at 5% to 30%. Prepare. The amount of the flat base added in the matte clear is increased or decreased according to the gloss value of the non-repaired portion 12 in a manner substantially similar to that of the lacquer repair paint. If the amount of matte clear added to the lacquer thinner is 5% or less, the amount of thinner is too large and the blurring liquid will run off the painted surface, making it impractical. There is a problem that the appearance is not improved because the effect of obscuring the delustering agent in the dust portion 14 is obscured and the effect of blurring is reduced. For the thinner, a retarder (thinner having a relatively high distillation temperature, commonly known as non-brushing) was added to an ordinary lacquer thinner, and evaporation was slowed down. To be The mixing ratio of the retarder varies depending on the distillation temperature, but for a retarder having a distillation temperature of 100 ° C. to 120 ° C., 20% to 40%, preferably about 30% was most practically effective.

After spray-painting the lacquer repair paint as described above on the repair part 10, and then spray-painting the above-mentioned blurring liquid on the dust part 14, naturally drying it to give the dust part 14 an unsightly appearance like a chalk powder. It was possible to eliminate it, or at least to alleviate the unsightly appearance, that is, the visual discomfort with the original matte coating portion 12.

(Advantages of the Invention) The present invention is extremely useful because it is possible to easily and lacquerly repair a lacquer on a matte coated surface, which has been difficult in the past, at low cost, and with good quality. Further, the realization of the lacquer repairing method and the coating material for repairing according to the present invention is expected to have an effect of accelerating the matte coating of articles such as automobiles, which have been delayed in popularization, where appearance is important.

[Brief description of drawings]

The attached drawings are conceptual diagrams illustrating the appearance of a vehicle door that has been subjected to a matte coating when the door is repaired by a conventional repairing method. 10 …… Repair part, 14 …… Dust part 12 …… Non-repair part

Claims (2)

[Claims] 1. A matte paint that is toned to the same color as the repair area
The first step of spray painting the lacquer repair paint recolored by adding ~ 20% clear and 3 ~ 10% flat base, and adding 15 ~ 30% flat base to clear The second step of spray-painting the dust solution generated around the repaired part by the blurring solution prepared by adding 5 to 30% of the prepared matte clear to the thinner for lacquer is included. Method for repairing matte lacquer characterized by 2. A matte paint toned to the same color as the repair part
To 20% clear and 3 to 10% flat base added and re-toned, lacquer repair paint for matte coating